2022-12-08
What are the effects of dripping irrigations?
The irrigated machine is an equipment for plant life or crops. It makes use of the stress gadget to in accordance to the necessities of the crops, and the fertilizer and water nutrient required for water and crop increase thru the water -assigned pipeline gadget can be delivered to the soil floor or soil layer of the root of the plant and the root of the plants via the water and crop growth. Frequent irrigations in water, fertilizer, and air. The micro -irrigation gadget has a drip head, micro -spray head, seepage pipe, and microtuba; the spray irrigation gadget has a range of nozzles; the synthetic gonorrhea device has a quickly water pickup lighter; As an irrigation. The irrigated machine is an equipment for flora or crops. It makes use of the stress gadget to in accordance to the necessities of the crops, and the fertilizer and water nutrient required for water and crop increase via the water -assigned pipeline device can be delivered to the soil floor or soil layer of the root of the plant and the root of the plants via the water and crop growth. Frequent irrigations in water, fertilizer, and air. The micro -irrigation device has a drip head, micro -spray head, seepage pipe, and microtuba; the spray irrigation machine has a variety of nozzles; the synthetic gonorrhea machine has a quickly water pickup lighter; As an irrigation.
The spray irrigation gadget is water conservancy services that spray irrigation from the water supply and transport them to the field. It consists of three parts: water supply engineering, transmission and distribution of water channels or pipelines and spraying machines.
There are many sorts of spray irrigation systems. The strain technique acquired by way of the water drift can be divided into deskto
2022-10-29
What are the methods of scientific irrigation and scientific irrigation?
Scientific irrigation is an irrigation method that professional irrigation enterprises have been promoting, including modern irrigation methods such as drip irrigation, micro -spray, osmotic irrigation, and spray irrigation. It is necessary to make a reasonable design according to the water demand characteristics, fertility phase, climate, soil conditions, etc., and formulate the corresponding irrigation system, timely, appropriate amount, reasonable irrigation.
This method can achieve local irrigation. In addition to supplementing soil moisture to meet the needs of plant growth, fertilizer and pesticides can be dissolved in water, combined with modern fertilizers such as fertilizer pumps for fertilization and medication. It can also avoid the saline alkaliization of the soil. For soils that have already appeared in saline, the soluble salts in the soil can be washed with irrigation to improve the soil.
In addition, scientific irrigation methods can also play a role in preventing fruits and vegetables from fruits and vegetables, and preventing dry hot air hazards, as well as preventing soil wind erosion.
2022-10-12
What are the advantages of water -saving drip irrigation technology?
What are the advantages of water -saving drip irrigation technology?
First, my country's water resources are relatively scarce.
In terms of total water resources, my country is only equivalent to 1/4 of the world population, 1/5 of the United States, 1/7 of Russia, and 1/50 of Canada. 3 ~ 1/2. At present, my country has an area of 9.6 million K㎡ in the arid areas, of which 28.36 million K㎡ in the arid areas, 260,000 K㎡ in the semi -arid areas, an area of 1.218 million K㎡ in the semi -arid areas, and a semi -dry area of 662,000 K㎡. The drought area is 4.976 million K㎡, accounting for 1/2 of my country's land area.
Second, suitable for large -scale dripping crops.
According to the statistics of the "Chinese Agricultural Yearbook 2001", in 2001, the planting area of Oda's economic crops was 51.67 million mu, accounting for 33.2%of the total sowing area, of which: vegetables, fruits, and cotton accounted for 18.61 million mu and 4.81 million mu, respectively. The orchard area reaches 9.2 million square meters, and the area of protection (facility agriculture) is 1.667 million square meters.
Water -saving drip irrigation
Third, my country has abundant oil.
Domestic oil resources are abundant, and there are many large ethylene projects that have been built and constructed. With the development of the plastic industry, raw materials can be self -sufficient with the development of the plastic industry.
Fourth, the equipment quality is reliable and the market supply is sufficient.
As of the end of 2003, according to incomplete statistics, there have been 25 production lines (belt) production lines from various countries across the country from Israel, Switzerland, Italy and other countries. Through the learning and digestion of foreign equipment technology, many domestic drip pipes (belt) production lines have been developed in Ch
2022-09-20
Filter is a prerequisite for drip irrigation
Filters are the key to drip irrigation. Correct selection of filters is a prerequisite for the success of drip irrigation. Common strainers include sand and gravel strainers, media strainers, mesh strainers and laminated strainers. The former is used for primary filtering and the latter is used for secondary filtering. There are many specifications of filters, and the choice of filters and their combinations mainly depends on the water quality. This question is more professional, and it is recommended to design choices by professionals.
The micro-drip irrigation system adjusts the flow rate through the faucet (micro-sprinkler or dripper). The diameter of the flow channel of the faucet is very small, which is easily blocked by physical and chemical impurities in the irrigation water. Therefore, the micro-drip irrigation system must be equipped with appropriate Humidifiers to prevent clogging and wasted investment. The following factors should be determined before making a selection:
1. Find out what impurities are in the irrigation water. After the water quality test, the particle size, physical properties, concentration and other indicators of impurities are obtained, and the selection and maintenance method of the filter are determined.
2. Select the appropriate diameter of the water injection port, and use the filter selected with the diameter to filter.
2022-09-20
For your popular science water-saving irrigation equipment
1. What aspects can water-saving irrigation equipment start from?
There are various ways of classifying water-saving irrigation measures. Here, water-saving irrigation measures are firstly divided into three categories: engineering measures, management measures, and agricultural measures. Among these measures, engineering measures can be further divided into three categories: water-saving measures for channel drainage and water-saving measures for field irrigation. Canal anti-seepage measures and pipelined drainage measures are the two main forms of canal water-saving measures. Water-saving measures for field irrigation can generally be divided into technologies such as improving surface irrigation, promoting sprinkler irrigation and micro-irrigation. The soil-improving irrigation technology generally includes various water-saving irrigation methods, such as leveling the land, modifying the small border, changing the long border to the border, intermittent irrigation (or surge irrigation), irrigation above the film, and irrigation under the film. Water-saving measures are generally divided into six categories: improving the irrigation system, establishing a water-saving technical service system, improving water source management, reforming the water management system, policies and regulations, formulating reasonable water price standards and water fee calculation methods. These types have 1 to 3 water-saving management measures respectively. Agricultural water-saving measures generally include water-appropriate planting, deep ploughing to preserve moisture, conservation tillage, mulching to preserve moisture, and crop cultivation.
2022-09-09
Tips from the dripper manufacturer: what to pay attention to when using the patch drip irrigation tape
Tips from dripper manufacturers: Precautions for the use of patch drip irrigation tapes
1. Drip irrigation pipes and drippers are easy to block, and the water quality requirements are high, and filters must be installed;
2. Drip irrigation cannot adjust the microclimate of the field, and is not suitable for irrigation during the freezing period. The drip irrigation system cannot be used to apply manure for vegetable irrigation.
Third, the investment in drip irrigation is high, and the economic benefits of crops should be considered;
4. For the burn of drip irrigation belt, attention should be paid to compacting the film when laying the drip irrigation belt, so that the film is as close to the drip irrigation belt as possible, and there is no space between the film and the drip irrigation belt. Avoid focal points formed by sunlight through water droplets. The land should be leveled before planting to reduce the phenomenon of many pits and depressions in the land. Prevent clods and weeds from holding up the mulch, causing water vapor to accumulate under the mulch, forming a lens effect and burning the drip irrigation belt. Drip tape can be submerged when laying to avoid focal burns.
The role of drip irrigation belt
At present, it is the most effective water-saving irrigation method in arid and water-deficient areas, and the water utilization rate can reach 95%. Drip irrigation has higher water-saving and yield-increasing effects than sprinkler irrigation, and can be combined with fertilization to increase fertilizer efficiency by more than two times. It can be used for fruit trees, vegetables, cash crops, greenhouse irrigation, and also can be used for field crop irrigation in arid and water-deficient areas. The disadvantage is that the dripper is easy to scale and block, and the water source should be strictly filtered. At present, domestic equipment has basically passed, and ar
2022-08-22
Why choose water-saving irrigation?
Why choose water-saving irrigation? Dripper manufacturers tell you
Water-saving irrigation methods.
Scientific irrigation is an irrigation method that professional irrigation companies have been promoting, including modern irrigation methods such as drip irrigation, micro-sprinkler, seepage irrigation, and sprinkler irrigation. It is necessary to carry out reasonable design according to the water demand characteristics, reproductive stage, climate and soil conditions of the corresponding plants, formulate corresponding irrigation systems, and irrigate in a timely, appropriate and reasonable manner.
This method can irrigate locally and accurately, not only can replenish soil moisture to meet the needs of plant growth, but also dissolve fertilizers and pesticides in water, and use modern fertilization devices such as fertilizer injection pumps for fertilization and medication. Soil salinization can also be avoided. For soils that have been salinized, the soil can be improved by flushing the soil with soluble salts. In addition, scientific irrigation methods can also prevent fruit trees and vegetables from freezing, prevent the harm of hot and dry wind, and prevent soil corrosion.
Water Saving Irrigation
Advantages of water-saving irrigation.
Scientific irrigation can effectively maintain the good state of water, fertilizer, gas and heat in the soil. It has many advantages such as water saving, labor saving, energy saving, fertilizer saving, production increase, and income increase. However, due to lack of funding and understanding, there is still much work to be done by peers in the industry.
Since modern times, with the rapid population growth and economic development, the prominent contradiction between water supply and demand is also reflected in the global irrigation industry. In addition, there are still problems such as further reducing construction and operating cos
2022-08-16
Would you really pick a drip pipe?
Do dropper manufacturers tell you that you really choose a drip irrigation pipe?
In the drip irrigation system, drip irrigation pipe is an important irrigator, it is installed on the capillary pipe through the low-pressure pipe system, according to the water demand of the crop, drop by drop, evenly and slowly into the soil the water of the root of the crop and the water required by the crop. The dropper is hot-melted connected with the PE tube wall, and the dropper and the tube wall form a closed flow channel. How to choose the right drip irrigation pipe? Here's how to share:
The choice of drip irrigation pipe should follow the principle of economic applicability, scientific and reasonable, easy to operate and easy to manage. For example: drip irrigation system in the cost of drip irrigation belt is lower, and convenient transportation, easy to install and lay; Drip irrigation pipe cost is high, but the service life is long, the average cost is low; The pressure supplement drip irrigation head has good operability and reliable use, but the construction and installation are complicated and the labor cost is high. Drip irrigation pipe cost is low, easy to use, reliable performance, but the range of use is limited, widely used in potted flower landscape; Turbulence is suitable for terrain, full specification, low cost and complex installation.
The displacement of drip irrigation pipe should be adapted to the needs of crop growth. Such as: fruit tree irrigation generally need a larger amount of water, so choose turbulent as drip irrigation faucet, vegetables and fruits generally use drip irrigation belt or drip irrigation pipe.
The irrigation method of drip irrigation pipe should be suitable for crop growth. For example: hemp, hemp, hemp, hemp, hemp, hemp, hemp, hemp, hemp, hemp, hemp generally use micro sprinkler head or micro spray belt, increase air humidity, promote the growth of flower crops.
2022-08-08
Dripper manufacturers all know: the characteristics of water-saving drip irrigation equipment
Drip irrigation pipe: Compared with traditional irrigation and fertilizer application technology, the traditional irrigation method saves water, that is, more than half of the irrigation water is lost or wasted; the irrigation coefficient of sprinkler irrigation is about 0.75, while the irrigation coefficient of drip irrigation is is 0.95. The field, the field, the field, the field. Drip irrigation saves water. There are two ways to apply fertilizers commonly used in water-saving drip irrigation equipment, namely proportional application and quantitative application. The amount of fertilizer used for irrigation can be expressed in quantity, and the amount of fertilizer is accurate to the amount of fertilizer for crops, which reduces the evaporation loss of fertilizer and the loss of nutrient formation. According to the test estimates, fertilization with sprinkler irrigation can save 11% to 10% of the fertilizer efficiency, while fertilization with drip irrigation can save fertilizer efficiency. 3. Save labor and labor, inject the fertilizer into the upper fertilizer tank, and enter the soil for irrigation through the irrigation system drip irrigation belt, drip irrigation pipe, top-type dripper, drip-arrow dripper, drip hole or flow channel. The system adds automatic control device to complete automatic fertilizer application. A complete drip irrigation and fertilizer application system can operate several acres, ranging from tens of acres to hundreds of acres. Only 2 to 3 workers who have undergone simple training can complete the fertilizer application in a short time, greatly reducing manpower and material expenditures. 4. The economic benefits of increasing production and income by irrigating and applying fertilizers include increasing production, improving quality, increasing income and reducing expenditures. Irrigation and fertilization can be used for a variety of crops. Since the nutrients of the fertilizer are in a solution state, it can enter the soil mor
2022-07-25
What are the measures to save water?
Vigorously popularize water-saving irrigation technology, and attach great importance to the promotion of agricultural water-saving measures. This can be done by adopting measures such as dry-cultivating and sparsely planting rice, throwing seedlings, mulching with plastic film, returning straw to the field, deep plowing and loosening the soil, inter-cultivation and weeding, suppression, raking, and increasing the application of organic fertilizers to improve the soil's ability to store natural precipitation and preserve moisture. ability. The application of chemical water-retaining preparations, the introduction and optimization of drought-resistant varieties, and the adjustment of crop planting structure are also effective water-saving measures, which should be vigorously promoted and popularized in areas with drought and water shortages.
Water-saving irrigation application fields: greenhouse, soilless cultivation, greenhouse, greening, garden, waste water reuse, etc.
The whole process of crop and green vegetation from seed germination and growth requires water to participate in photosynthesis. However, the water consumed by plants is used for foliar transpiration and interplant soil evaporation to regulate crop body temperature, improve microclimate and deliver nutrients to plants. Without the right amount of water supply, the growth and development of crops will be compromised. Continued lack of water can cause crops to dry up and die.
In order to change the passive situation of relying on the sky for food, and to actively influence and control the growth of crops, irrigation technology appeared and gradually developed. Irrigation is the use of artificial facilities to transport water that meets quality standards to farmland, green space, etc., to supplement soil moisture, and to improve the growth and development conditions of plants. China is one of the countries in the world that develops farmland irrigat
2022-07-14
Buried drip irrigation dripper manufacturing technology
Buried drip irrigation dripper manufacturing technology
The patented technology of the utility model relates to the technical field of drip irrigation, in particular to a buried drip irrigation dripper, which comprises a casing, the upper end of the casing is connected with a water inlet pipe, and the outer side of the casing is symmetrically provided with drip ports at equal distances. There are fixed sleeves corresponding to the position of the drip port symmetrically on both sides, and the outer sides of the fixed sleeve are equally spaced with rubber drippers that match the position of the drip port, and the rubber drip heads are connected to the drip port through a hose. The two sides of the casing are provided with threaded grooves, the inner cavity of the threaded grooves are screwed with threaded covers, and the corresponding sides of the two threaded covers are provided with bearings. A rotating rod is connected between the rotating rods, the outer side of the rotating rod is equidistantly provided with a supporting plate, and the outer side of the supporting plate is equidistantly connected with a stirring rod. At the same time, effective fertilization is carried out, which is convenient to save manpower and material resources and improve the efficiency of crop growth.
2022-06-29
What are the common problems with water-saving irrigation?
With the rapid development of my country's economy, the lack of water resources has become an important factor restricting the sustainable development of the economy and society. It is urgent to strengthen the management of water resources and implement scientific allocation. However, water-saving irrigation is an important way to save water resources, and its promotion still has a long way to go.
1. Irregular management of water-saving irrigation industry
There is no specific industry standard for the water-saving irrigation industry, and the bidding qualification requirements issued by the Construction Bureau can only be used. Most of the companies that led to the successful bidding were construction companies, not irrigation engineering companies. In some small places, some winning bidders do not even have construction qualifications due to the disorder of the market and the ineffective supervision of relevant departments.
In addition, the construction of water conservation laws and regulations is not perfect. Although my country has actively promoted energy conservation and emission reduction in recent years, a scientific market mechanism for irrigation water has not yet been established. The price of agricultural water in my country is relatively low, and the control methods are relatively simple. This is not conducive to the realization of water-saving irrigation.
Water-saving irrigation industry
2. The certification of water-saving irrigation is low.
Farmers have a low level of certification for water-saving irrigation and lack of knowledge about water resources. The investment in water-saving irrigation projects is relatively high, with an average investment of more than 1,000 yuan per mu. For people with little land, the input is not proportional to the output. It is difficult for farmers to see the importance of irrigation projects because the short-term benefits are
2022-06-20
What is water-saving irrigation?
Water-saving irrigation is an irrigation measure that increases crop yield and output value per unit of irrigation water. The main measures are: channel anti-seepage, low-pressure pipe irrigation, sprinkler irrigation, micro-irrigation and irrigation management system.
Water-saving irrigation - refers to obtaining better production and economic benefits with less irrigation water. The basic requirement of water-saving irrigation is to take effective technical measures to create production and economic benefits with limited irrigation water.
2022-06-18
Advantages of Pressure Compensated Drippers
Advantages of Pressure Compensated Drippers
The pressure-compensated dripper deforms the elastic parts or the flow channel by the pressure of the water flow, resulting in the change of the cross-sectional area of the water, realizing the stable flow, and can automatically adjust the water output and self-cleaning. ; And the performance of the elastic material is directly related to the pressure compensation characteristics of the dripper. Only the performance stability of the elastic material is equivalent to that of the dripper material to ensure that the entire dripper can work stably for a long time.
The pressure-compensated dripper can keep the flow rate of the dripper basically unchanged in a large pressure range, thus increasing the adaptability of the dripper to complex terrain.
In addition, when using pressure-compensated drippers, the number of drippers arranged in the same branch pipe can be greatly increased, and the number of branch pipes can be reduced accordingly, thereby reducing the cost of the pipe network, and it is not sensitive to temperature changes, which is beneficial to ensuring and stabilizing irrigation uniformity.
Advantages of Pressure Compensated Drippers
2022-06-08
What are the modes of water and fertilizer integration?
The integrated technology of water and fertilizer is to dissolve fertilizer into water according to the law and quantity of fertilizer and water demand of crops, and directly and quantitatively deliver it to the soil area where the root system of crops is most concentrated, and deliver water and nutrients directly to the "mouth" of crops at any time. , so that crops can drink when they are thirsty and eat when they are hungry; it can also reduce the waste of water and fertilizer caused by volatilization and leaching, thereby greatly improving the utilization rate of water and fertilizer.
Circular Skill Form
This form is a technical form with better water-saving and fertilizer-saving effect at present, and the technical form consists of three parts: control system, irrigation system and planting system. The planting system is composed of PVC pipes and fixing frames, and the PVC pipes are horizontally fixed on the fixing frames.
Equidistant circular holes are drilled above the PVC pipe for planting vegetables and strawberries. The irrigation system consists of nutrient solution storage equipment, circulation equipment and other parts. The nutrient liquid stored in the storage tank is specially formulated according to the nutrient elements and proportions required by different stages of crop growth and development, which can fully meet the needs of various nutrients in different growth and development stages of crops. After the crops are planted, the control system will activate and close the irrigation system according to the set time period.
After the irrigation system is started, the nutrient liquid will flow uninterruptedly from the front end of the PVC pipe to the end under the control of the circulation equipment within a certain period of time, and then flow back to the storage equipment. Crops also absorb water and nutrients in the process of nutrient liquid circulation.
Experiments show
2022-05-30
What are the advantages of two-color forming molds
The advantages of two-color forming molds are as follows:
1. The product has high precision and stable quality.
2. Good structural strength and durability.
3. Small matching clearance and good appearance.
4. The cost is greatly reduced.
Two-color mold: a mold in which two plastic materials are injected on the same injection molding machine and molded in two times, but the product is only released once. Generally, this molding process is also called two-component injection molding, which is usually completed by a set of molds and requires a special two-color injection molding machine.
Two-color molds are increasingly popular in the market. This process can make the appearance of the product more beautiful, and it is easy to change the color without spraying, but the cost is expensive and the technical requirements are high.
1. The two shapes of the female mold are different, and one product is formed respectively, while the two shapes of the male mold are exactly the same.
2. After the front and rear molds of the mold are rotated 180o, they must be matched. This inspection action must be done during design, and this point has higher requirements on the positioning and processing of the mold base.
3. The total thickness of the front mold panel plus the A board should not be less than 170mm. Please carefully check other reference data of this type of injection molding machine, such as the thickness of the mold, the thickness of the mold, the distance of the KO hole, etc.
4. The nozzle of the three-plate mold can be designed to automatically release the mold. Pay special attention to whether the release action of the soft glue nozzle is safe.
5. When designing the master mold for secondary injection molding, in order to avoid the secondary master mold inserting (or scratching) the glue posi
2022-05-13
Water-saving irrigation equipment out of the Chinese model
The integration of machine and technology, the integration of water and fertilizer is used in combination with sprinkler irrigation
"my country's farmland is dominated by field agriculture and the scale is not high, which determines that the medium-sized sprinkler is suitable for water-saving irrigation." Qiu Zhipeng said that the medium-sized reel-type sprinkler is flexible, highly automated, and low-cost, suitable for large-scale irrigation. The large-scale operation of small and medium-sized crops of different scales is one of the most widely applicable water-saving irrigation equipment.
The traditional domestic reel type sprinkler irrigation machine adopts the foreign technology in the 1980s, and has the problems of many transmission stages, low drive unit efficiency and large deviation of mechanical speed control, resulting in high equipment energy consumption and low irrigation uniformity.
"In this regard, we have carried out four key technical innovations to solve the problems existing in the traditional reel type sprinkler." Qiu Zhipeng introduced that the first is to develop a solar-powered DC motor to directly drive the gearbox, which reduces the input pressure by 10% and consumes energy. The second is to use the transmission combination of worm gear + spur gear, the transmission efficiency is improved by 20%, and the volume is reduced by 10%; the third is to establish the comprehensive parameter sensing and speed control technology of the reel. 20% is reduced to about 5%, and the evenness of irrigation exceeds the national standard; the fourth is to establish a decision-making method between the amount of irrigation water and the moving speed. The equipment operates in a single line and is flexible and can effectively deal with above-ground pits and canals. At the same time, the work can be extended according to the length of the plot without constraints. Only 3 tons of water can be used for operation, which is
2022-05-13
What are the benefits of choosing sprinkler irrigation for water-saving irrigation?
What are the benefits of choosing sprinkler irrigation for water-saving irrigation?
1. Sprinkler irrigation can increase the output value of crops
During sprinkler irrigation, the irrigation water is in the form of water droplets, which moistens the soil like rainfall, does not damage the soil structure, and creates a good moisture condition for crop growth; because the irrigation water is transported and distributed to the field through various sprinkler irrigation equipment, all in a controlled state Under the operation, the water supply can be accurately supplied according to the water supply conditions and the crop water demand law. In addition, sprinkler irrigation can also adjust the microclimate in the field. In the dry and hot wind season, sprinkler irrigation can be used to increase air humidity and reduce the temperature, which can have a good effect; in early spring, sprinkler irrigation can be used to prevent frost. Practice has shown that sprinkler irrigation can increase the output value by 15% to 25% compared with ground irrigation.
2. Sprinkler irrigation can save water consumption
Because there is no water loss in the sprinkler irrigation system, the sprinkler irrigation intensity and the amount of water can be well controlled, the irrigation water is uniform, and the water utilization rate is high. The irrigation uniformity of sprinkler irrigation can generally reach 80%-85%, the effective utilization rate of water is more than 80%, and the water consumption is 30%-50% lower than that of ground irrigation.
3. Sprinkler irrigation has strong adaptability
An outstanding advantage of sprinkler irrigation is that it can be used for various types of soils and crops, and is less restricted by topographical conditions. For example, sprinkler irrigation can be used in places where it is difficult to irrigate on sandy soil or where the terrain slope reaches 5%. In
2022-03-11
What are the advantages of two-color forming molds?
The advantages of two-color forming molds are as follows:
1. The product has high precision and stable quality.
2. Good structural strength and durability.
3. Small matching clearance and good appearance.
4. The cost is greatly reduced.
Two-color mold: a mold in which two plastic materials are injected on the same injection molding machine and molded in two times, but the product is only released once. Generally, this molding process is also called two-component injection molding, which is usually completed by a set of molds and requires a special two-color injection molding machine.
Two-color molds are increasingly popular in the market. This process can make the appearance of the product more beautiful, and it is easy to change the color without spraying, but the cost is expensive and the technical requirements are high.
1. The two shapes of the female mold are different, and one product is formed respectively, while the two shapes of the male mold are exactly the same.
2. After the front and rear molds of the mold are rotated 180o, they must be matched. This inspection action must be done during design, and this point has higher requirements on the positioning and processing of the mold base.
3. The total thickness of the front mold panel plus the A board should not be less than 170mm. Please carefully check other reference data of this type of injection molding machine, such as mold thickness, mold thickness, KO hole distance, etc.
4. The nozzle of the three-plate mold can be designed to automatically release the mold. Pay special attention to whether the release action of the soft glue nozzle is safe.
5. When designing the master mold for secondary injection molding, in order to prevent the secondary master mold from inserting (or scratching) the glue position of the product that has been molded once, a part of the void can be des
2022-03-03
What is a two-color mold
A two-color mold is a mold in which two plastic materials are injected on the same injection molding machine and molded in two times, but the product is only released once. Generally, this molding process is also called two-component injection molding, which is usually completed by a set of molds and requires special two-color injection molding.
machine. Two-color molds are increasingly popular in the market. This process can make the appearance of the product more beautiful, and it is easy to change the color without spraying, but the cost is expensive and the technical requirements are high.
1. The two shapes of the female mold are different, and one product is formed respectively, while the two shapes of the male mold are exactly the same.
2. After the front and rear molds of the mold are rotated 180o, they must match. This inspection action must be done during design, and this point has higher requirements on the positioning and processing of the mold base.
3. The total thickness of the front mold panel plus the A board should not be less than 170mm. Please carefully check other reference data of this type of injection molding machine, such as the thickness of the mold, the thickness of the mold, the distance of the KO hole, etc.
4. The nozzle of the three-plate mold is designed to automatically release the mold. Pay special attention to whether the release action of the soft glue nozzle is safe.
5. When designing the master mold for secondary injection molding, in order to avoid the secondary master mold inserting (or scratching) the glue position of the product that has been molded once, a part of the void can be designed. However, the strength of each sealing position must be carefully considered, that is: in the injection molding, whether there will be
Under the large injection pressure, the plastic is deformed, which may lead to the possibility of batch f
2022-02-24
When the greenhouse is idle, how to keep water-saving irrigation equipment?
When the greenhouse is idle, how to keep water-saving irrigation equipment?
A: before packing up to clean the sediment in the pipeline
It is understood that in the vegetable greenhouse installation of water-saving irrigation equipment in the filter, most are net filter and disc filter, these two filters on the larger sediment particles have a good filtering effect, more fine sediment will pass through the filter or filter into the pipeline inside, in the accumulation.
Therefore, before the capillary tube of water-saving irrigation is retracted, the closing end of the capillary tube should be opened, and the accumulation inside should be washed out by increasing the water pressure. The capillary can be lifted and shaken several times during washing. It can then be removed to drain the water from the capillaries and retracted.
2022-02-24
What are the common problems with water-saving irrigation?
With the rapid development of China's economy, the lack of water resources has become an important factor restricting the sustainable development of economy and society. It is urgent to strengthen the management of water resources and implement scientific allocation. However, water-saving irrigation is an important way to save water resources, and its popularization still has a long way to go.
I. Non-standard management of water-saving irrigation industry
There is no specific industry standard for the water-saving irrigation industry, so we can only use the bidding qualification requirements issued by the CONSTRUCTION Authority. Most of the companies that led to successful bids were construction companies, not irrigation engineering companies. In some small areas, some successful bidders are not even qualified for construction because of disorganized shopping malls and weak su
2022-02-22
How did water-saving irrigation equipment develop?
In the 1950s, because of the rapid economic development, the cost of labor in the United States increased rapidly. Farmers desperately need machines with lower labor costs than rolling sprinklers.
In 1952, a Colorado farmer named Frank invented a hydraulically driven, self-circulating, sprinkler-mounted machine with a sprinkler on top, called the Center Pivot. Later, the rights to the machine were sold to a cutting company in Nebraska (now Vermont). Machines of this type were equipped with rocker nozzles by Rain Bird until the 1970s. Its advantages are high degree of automation, low irrigation labor cost, strong terrain adaptability, and no need for leveling. The disadvantage is the low land use rate (about 78%). After the 1960s, this robot has a large population. The uneven agricultural region of Central America, Colorado, Nebraska, and Kansas are widely practiced.
In the 1970s, due to the impact of the oil crisis, the nozzles of the center pivot sprinklers were changed from rocker nozzles to low pressure micro nozzles to save energy. Since then, hydraulic drives have also been gradually transformed into electric drives with increasing reliability. Currently, about 31% of the total irrigated area in the United States is irrigated by the center-link system. LateralMoving was developed in order to improve land use, but it was of little use. Because of high cost, inconvenient protection and high energy consumption. There is also an irrigation machine called the Roller Sprinkler, which is widely used throughout Europe, originated in France and is suitable for small farms. The whole set has a large spray gun with great flow and reach. The machine is flexible and has low labor cost. However, the energy consumption is high, the uniformity of water spraying is poor, the soil erosion is severe, and the intensity of the attack on crops is too
2022-02-21
What is drip irrigation
Drip irrigation is the use of plastic pipes to send water through orifices or drippers on capillary tubes with a diameter of about 10mm to the roots of crops for local irrigation.
It is an effective water-saving irrigation method in arid and water-deficient areas. Drip irrigation has higher water-saving and yield-increasing effects than sprinkler irrigation, and can be combined with fertilization to more than double the fertilizer efficiency. It can be used for irrigation of fruit trees, vegetables, cash crops and greenhouses, and can also be used for field crop irrigation in dry and water-deficient places. The disadvantage is that the dripper is easy to scale and block, so the water source should be strictly filtered.
Drip irrigation is an irrigation method in which the water and the water and nutrients required by the crops are dripped into the soil of the root zone of the crops evenly and slowly through the pipe system and the irrigator installed on the capillary according to the water requirements of the crops. Drip irrigation does not damage the soil structure, and the water, fertilizer, gas and heat inside the soil are always kept in a good condition suitable for crop growth, the evaporation loss is small, there is no ground runoff, and there is almost no deep leakage. It is a water-saving irrigation method. The main feature of drip irrigation is that the amount of water is small, and the flow rate of the irrigator is 2-12 liters per hour. Therefore, the duration of one irrigation is long, and the period of irrigation is short, which can achieve frequent irrigation with small water; the required working pressure is low, and it can be more Accurately controlling the amount of irrigation water can reduce ineffective evaporation between tre
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