How is drip irrigation tape produced?
Key technologies for drip irrigation tape production
Drip irrigation tape is one of the core components of the drip irrigation system and is used in large quantities. , Drip irrigation tapes are mainly formed and processed by heat sealing, extrusion or composite processes. Most of the thermoformed drip irrigation tapes are products produced in the United States. They are heat-sealed by a film or two inner films that are stacked sideways for heat-sealing. The total length of the flow channel of the hot-formed drip irrigation tape is long and the cross-sectional area is large. Although the manufacturing cost is low, the stability of the flow channel is poor, so the uniformity of the water output is poor. It has been basically eliminated in foreign markets. In-line extruded drip irrigation tape, also known as in-line drip irrigation tape, is a drip irrigation tape formed by extruding and fitting a sheet-shaped injection dripper with a micro-maze flow channel into the inner wall of a film tube. This type of drip irrigation belt has the characteristics of short flow channel length and small cross-sectional area, but it also has high water quality requirements. The built-in drip irrigation tape has strong anti-clogging performance and long service life, but the process of screening and feeding the drippers into the bonding system is complicated, resulting in higher production costs; while the side-seam drip irrigation tape has a simple forming process and low manufacturing cost, but The comprehensive water conservancy performance is poor.
The key technologies of the drip irrigation tape production line are as follows:
1. Vacuum blister: At present, the main processing method of side seam drip irrigation tape is: extruding thin wall through an extruder For plastic pipes, the extruded thin-walled pipe is flattened. Before cooling, the thin-walled plastic pipe is pressed into a labyrinth flow channel form through a forming wheel, and the labyrinth flow channel is sucked out using vacuum suction. The advantage of this processing method is that the drip irrigation tape can be continuously processed and formed. The disadvantage is that the cost of the drip irrigation tape is high due to the high cost of the device and the thickness and diameter of the drip irrigation tape are difficult to control.
2. High-speed screening of built-in drip irrigation tapes: The drippers in built-in drip irrigation tape products need to be manufactured separately. When the film tube is stretched and formed, the drippers are embedded in the pipe wall. The entire production process requires Dripper injection molding machine, high-efficiency film extruder, dripper screening system, dripper feeding and bonding system, laser drilling machine, winding machine and other complete sets of equipment, with high processing accuracy.
3. Integrated forming of high-speed inner strips: the film is formed by the extruder drawing process, and at the same time, the strips with water channel strips are compounded in the film strips. The pattern on the strips remains after compounding. It has multiple water inlets and labyrinth water channels. After that, the water outlets are formed by laser cutting outside the film. This technology requires high precision in the design of the dripper carrier, because the depth of the dripper engraved on the dripper carrier directly affects the change of the flow rate of the drip irrigation tape. If the engraving is too deep, the flow rate of the drip irrigation tape will increase, and if it is too shallow, the flow rate of the drip irrigation tape will increase. The belt flow becomes smaller. How about the drip irrigation tape production project?
Overview of the development of the global water-saving irrigation industry
(1) The global water shortage situation is still severe, and water-saving irrigation is the only way to solve the water resources problem
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Today’s world is facing three major problems: population, resources and environment. Among them, water resources are an irreplaceable and important resource among various resources. With the development of economy and society, the demand for water will become more important. As a result, water resources will become increasingly scarce. According to the World Bank, 80 countries, accounting for 40% of the world's population, face water crises. The United Nations predicts that by 2025 half the world’s population will live in water-scarce areas. In order to cope with the stress and shortage of water resources, countries around the world have vigorously developed water-saving industries and advocated water conservation. Learn more about (Hebei Runtian Water Saving) Water-saving irrigation is the development trend of irrigation technology in the world and an inevitable choice to alleviate the water crisis and achieve efficient and precision agriculture.
(2) Global water-saving irrigation is dominated by sprinkler and drip irrigation, and new sprinkler and drip irrigation technology is rapidly innovating
The effective irrigation area in the United States is 383 million acres. to half of China, and the cultivated area using sprinkler irrigation and drip irrigation reaches about 87%. The country with the best development of water-saving irrigation technology in the world is Israel. Currently, more than 80% of the irrigated area uses drip irrigation technology. Israel's Netafim, Plasto and many other water-saving irrigation companies are leading the world in technology. In addition, in other countries such as Sweden, the United Kingdom, Austria, Germany, Denmark, Hungary, the Czech Republic, and Romania, the proportion of sprinkler irrigation and drip irrigation areas in the irrigated area has reached more than 80%.
While the global sprinkler irrigation area remains at a high level, new sprinkler irrigation technologies are also emerging rapidly, including water and fertilizer integration, pressure irrigation technology, buried irrigation technology, sprinkler irrigation technology, distributed irrigation technology and smart sprinkler irrigation systems. The promotion and industrialization of new technologies have laid a good foundation for the further application of sprinkler and drip irrigation devices.
3. Overview of the development of water-saving irrigation industry in my country
my country is a country with poor water resources and is listed as one of the 13 most water-poor countries in the world. my country's per capita water resources are about 2,100 cubic meters, which is only equivalent to 1/5 of the United States. At the same time, in my country, 38% of the cultivated land is distributed in northern regions such as northwest, north China, and northeastern China. Drought and lack of rainfall have led to a lack of water resources in northern my country. In the northwest, more than 50% of the land has no agriculture without irrigation. However, without irrigation, stable and high yields of food cannot be guaranteed. The effective utilization coefficient of farmland irrigation water in my country is only 0.53, which is far lower than the average level of 0.80 in developed countries. According to statistics from the Ministry of Land and Resources and the Ministry of Water Resources, in terms of irrigation, the effective irrigated area of ??farmland increased from 59.65 million hectares in 2010 to 64.54 million hectares in 2014, with a compound annual growth rate of 2.0%; the effective irrigated area of ??farmland accounted for a stable proportion of cultivated land. There was an increase, from 44.10% in 2010 to 47.80% in 2014. In terms of water-saving irrigation, the area of ??water-saving irrigation projects increased from 27.31 million hectares in 2010 to 29.02 million hectares in 2014, with a compound annual growth rate of 1.50%. The proportion of water-saving area in the effective irrigation area showed a fluctuating trend, accounting for The highest ratio is 50%, and the remaining years fluctuate around 45%. About half of the country's cultivated land still has no irrigation facilities and relies on the weather. The nearly average effective irrigated area is still using backward irrigation methods. my country's water resources are scarce and unevenly distributed, and agricultural irrigation water utilization efficiency is low. Vigorously developing water-saving irrigation is an inevitable requirement to alleviate my country's water shortages. It is also an important means to build a conservation-oriented society and establish a water ecological civilization system. Drip irrigation tape manufacturer, how to connect drip irrigation tape?
They sell special drip irrigation tape connection joints, including the connection joints between drip irrigation tapes and main pipes, as well as the connection joints between drip irrigation tapes and drip irrigation tapes. How to connect crystals? Produced in the same way
After the crystal raw materials mined from the mine are screened in terms of shape, size, clarity, etc., they are cut into blanks of different shapes as required, and then the edges and corners are removed and ground into circles or other shapes. . After drilling, polishing, cleaning and drying, it can be put into storage. Finally, various styles of finished products are made according to market needs.
Selection of crystal jewelry
First look at the raw materials: the texture should be pure, smooth and crystal clear;
Second look at the workmanship: pay attention to shape, style and symmetry ;
Three things to look at for polishing: natural transparency, bright luster, and less wear marks are better.
Different uses of crystal jewelry
(1) Crystal necklace: It can make you speak more fluently and convincingly
(2) Crystal earrings and Bracelets and bracelets: They are both located on acupuncture points of the human body and can promote blood circulation.
(3) Crystal ball: It is the leader in crystal jewelry. People all over the world, especially China, Japan, the United States, South Korea and other countries, have a special liking for crystals and like to place crystals at home or in the office. The ball is a metaphor for "response to all requests". The crystal ball is derived from nature and collects the essence of heaven and earth. Therefore, many people believe that the crystal ball has spirituality and can protect the home and bring wealth.
Crystal care
Crystal is brittle, so be careful to prevent heavy pressure, falling, high temperature, strong alkali and strong acid.
Amethyst jewelry should be kept away from strong light, otherwise the color will fade.
For cleaning, generally rinse with clean water (not warm water), and then wipe dry with a soft cloth. How is the saw blade produced?
Raw blank → cutting → material forging → annealing →Rim outer circle→Drilling→Tooth cleaning→Heat treatment→Anti-rust treatment.
I hope it will be helpful to you. How much is the drip irrigation tape manufacturer? How much is one meter of drip irrigation tape?
1. Maze drip irrigation tape is also called single-sided embossed drip irrigation tape and edge-sealed drip irrigation tape. , that is to say, the flow channel of the drip irrigation belt is shaped like a maze on one side, so it is called a labyrinth drip irrigation belt. When the water enters the labyrinth flow channel, the pressure of the water is relieved and flows into the drip hole, so that the flow of water can be effectively controlled. When the water pressure is high, the water output will be large, and when the water pressure is low, the water output will be small. Single-wing maze drip irrigation tape specifications: 16*0.2*300/Hour lower head water flow is 2L-2.5L 2. Inlaid patch type drip irrigation tape, that is, during production, the machine inserts a patch type dripper into the drip irrigation tape The inner side of the belt is called an inner patch type drip irrigation belt. *** How is t splicing tape produced?
SMT splicing tape series: There are four main series of splicing products (applicable to 8mm, 12mm, 16mm, 24mm, 32mm tapes):
p>1. Single-sided splicing tape (multiple models): generally used with splicing pliers and splicing copper buckles. Skilled employees can also directly use the four-sided splicing tape to glue the splicing tape without the splicing pliers. , this price is relatively cheap.
2. Double-sided splicing tape (multi-series) (single and double-sided hole positioning), use both sides of the splicing tape to completely correspond to the holes on the material tape, so that the yellow splicing tape corresponds to the film on the material tape Complete, so that it can be pasted, and the price is moderate
3. All-purpose splicing tape (multiple series) makes splicing more reasonable and faster; the three-sided splicing tape (Panasonic exclusive) has changed Panasonic The history of machines being unable to refill materials has created more benefits for electronics manufacturing companies.
4. Special splicing tape (multiple series),
SMT double-sided splicing film is suitable for 8mm, 12mm, 16mm, 24mm
By using splicing Belts can bring the following benefits to the majority of electronic manufacturing companies:
1. It can greatly improve production efficiency. If the machine is stopped to receive materials, the time spent each time is about 2 minutes, which is still Fast, a machine runs for 8 yuan for one minute, which wastes 2*8=16 yuan; if you use a splicing tape, you save this time, and the cost of two splicing tapes is only 0.4 yuan.
2. It can greatly avoid material waste: avoid discarding materials that are too short to be used on the machine, and use all remaining materials.
3. It is to reduce the mechanical loss of the machine feeder; reduce the frequent stopping and starting of the machine, avoid frequent triggering and other actions of the feeder, and extend its service life.
4. It can avoid some man-made accidents that may be caused by opening and closing the machine cover.
Note: The colors of splicing tape are: dark yellow (S), dark blue (N), matte black-anti-static (M-ESD), bright black-anti-static (G-ESD), transparent Green-anti-static (L-ESD). How are iron-carbon microelectrolytic fillers produced?
Iron-carbon micro-electrolysis filler encloses iron and metal catalysts with carbon through high-temperature sintering and other means to form a framework iron-carbon structure. 1. In this mechanism, iron and carbon are always integrated. Unlike the iron-carbon combination, the separation of iron and carbon is not easy to occur, which affects the reaction of the primary battery.
2. The integration of iron and carbon can reduce the resistance of the primary battery, thereby improving the electron transfer efficiency and processing efficiency.
3. The integration of iron and carbon can avoid the occurrence of passivation. Although there is a large amount of iron that produces passivation, the friction between particles can reduce the passivation layer, and the iron-carbon in the framework But not affected by passivation.
This product is specially designed for the treatment of wastewater with high organic matter concentration, high toxicity, high color, and refractory biochemicals. It can significantly reduce the color and COD of wastewater, and increase the B/C ratio to increase the sustainability of wastewater. Biochemical. It can be widely used in the treatment of various industrial wastewaters such as printing and dyeing, chemical industry, electroplating, pulping and papermaking, pharmaceuticals, wool scouring, pesticides, pickles, alcohol, etc. and treated water reuse projects.
I hope my answer can help you. I recommend Gongyi Beishankou Huayu Water Purification Material Factory. They are a manufacturer of iron-carbon micro-electrolytic fillers. The iron-carbon fillers they produce are not hardened or passivated, and the effect is very good. The price is also affordable. How is "rubber" produced?
Rubber production process
1. The petroleum processing plant transports powdered or liquid synthetic rubber to the rubber manufacturing plant.
If you want to use
natural rubber, it comes in strong hunks, and workers have to crush it and dissolve it first.
2. Combine rubber with ground pumice powder (can make the rubber slightly rougher), iron oxide
(can make the rubber turn pink), vegetable oil, sulfur Mixed with other substances.
3. Heating the mixture causes sulfur to mix with the rubber to increase the strength of the rubber and make it more durable.
4. Feed the soft, still warm raw material into the stamping machine (squeeze into a die) to make
a long and thin rubber stick. Cut the rubber stick into small sections with a knife, wait for it to cool, and then transport it to the pencil factory to make erasers on pencils.
5. The block rubber used alone is made by injecting the heated rubber mixture into molds of various shapes
. After cooling, open the mold and rubber in various shapes will come out. How is lime produced?
Lime refers to quicklime made from rocks containing calcium carbonate (CaCO3) such as limestone and marl, which are fired at high temperatures. In coastal areas, it is also common to burn snail, clam, and oyster shells to make "shell ash", whose main component is calcium oxide (CaO). Limestone is calcined in a ventilated lime kiln to a temperature above 900°C to produce lime. Through high temperature treatment, the rock is denatured and the effectiveness of calcium is increased. It reacts with water to generate calcium hydroxide, commonly known as hydrated lime. Its change reaction formula is:
CaCO3→CaO+CO2< /p>
CaO+H2O→Ca(OH)2
Lime can be divided into quicklime and hydrated lime. The main component of quicklime is calcium oxide (CaO), and the white solid is fire-resistant and difficult to tolerate. It is water-absorbent and can be used as a desiccant. It is commonly used by Chinese folk to prevent debris from regaining moisture. Reacts with water (and releases a lot of heat at the same time), or absorbs moisture in the humid air, that is, hydrated lime [calcium hydroxide Ca (OH) 2], also known as "slaked lime". Hydrated lime dissolves 1.56 grams in one liter of water (20°C). Its solution is called "lime water", which is alkaline and absorbs carbon dioxide in the air to form calcium carbonate precipitation.