WO2007073614A1

WO2007073614A1 - A micro irrigation nozzle and its micro irrigation device and micro irrigation system

Info

Publication number: WO2007073614A1
Application number: PCT/CN2005/002323
Authority: WO
Inventors: Jun Zhu
Original assignee: Jun Zhu
Priority date: 2005-12-27
Filing date: 2005-12-27
Publication date: 2007-07-05
Also published as: CN101378650A; CN101378650B

Abstract

The present invention refers to a micro irrigation nozzle (1) and its micro irrigation device (2) and micro irrigation system, in which the micro irrigation nozzle (1) includes a water-processing chamber (11), a filter element (14) mounted in said water-processing chamber (11), and at least one capillary head (15) linked to a outlet (13); the micro irrigation device (2) includes a water-collecting vessel (21) and above said micro irrigation nozzle (1) linked to the water-collecting vessel (21); the micro irrigation system includes a water-distributing pipes (3) and above said micro irrigation nozzle (1) linked to the water-distributing pipes. The present invention can efficiently control speed of water passing through capillary medium, so the working life of the whole apparatus is greatly prolonged.

Description

Micro-filler, micro-irrigator and micro-irrigation system

Technical field

The present invention relates to a micro-irrigation device for irrigating plants, and more particularly to a micro-irrigator, micro-irrigator and micro-irrigation system.

Background technique

In the past, underground micro-irrigation was mainly in the form of drip irrigation, because it has obvious water-saving effects, can optimize the quality of agricultural products and increase yield, reduce weed growth, does not damage soil structure, facilitates management, does not affect the ground's activities, and extends the system. The advantages of life, cost reduction, labor saving, etc. are valued by all countries. However, due to the problems that are difficult to solve by themselves, they cannot be used on a large scale. There are two main points:

1. Blockage problem. Under drip irrigation conditions, the dripper not only has physical and chemical clogging caused by tiny particles or water quality, but also has two other causes of clogging: First, the negative pressure generated by the capillary after the irrigation pipe is stopped. It is possible that the tiny particles in the soil are sucked into the micropores of the emitter to cause blockage; the second is that the watery growth of the roots of the plant may cause the roots to invade the drip holes.

2. The uniformity of irrigation is not easy to control. Since the system is buried underground, direct measurement of the dripper flow cannot be made. The uniformity of irrigation is not only affected by the uniformity of working pressure of each dripper, the temperature difference and the manufacturing deviation of the dripper, but also because of the large diameter of the dripper outlet (generally above 200 microns), the change of water output to pressure Very sensitive, under the influence of system tube resistance, the flow difference between the proximal end and the far end is very large, so it is difficult to evaluate the system operation and the measurement of the irrigation water.

In addition, the existing underground micro-irrigation can be as low as 3-5 liters of water per hour, whether it is drip or seepage. However, through a lot of experiments, many plant seedlings need only a few hundred milliliters or even dozens of water per day. l, obviously there is a terrible waste of drip irrigation and seepage irrigation. In order to reduce the flow rate, some people use membrane materials to control the amount of water, such as: Chinese Utility Model Patent No. 93206374, introducing a device for supplying water to the roots of plants, using a filter on the water bag at the water outlet to make water The water-passing membrane material in the bag is slowly oozing out for irrigation. However, the invention exists in practical applications. Difficult to solve the problem: In order to achieve a small amount of water supply, the pores of the membrane material will be small, and we often have a lot of tiny impurities in the water, including tap water, well water, etc. These impurities will quickly block the membrane material under normal pressure. In order to ensure the amount of water, it is necessary to gradually increase the pressure of the water as the blockage increases. This will inevitably consume energy or labor. If the pressure is applied at the beginning without manual adjustment, the initial flow will be large and the blockage will increase. The result of a rapid decrease in traffic. Plants need a stable micro-water supply. Without a stable water supply, trace water supply cannot be achieved.

The inventors found some important characteristics of the passage of water through the membrane material in the experiment: 1) ordinary water passes through the membrane material, and the influence of impurities in the water on the water discharge rate of the membrane is very large, usually under natural pressure, that is, the water is only affected by its own gravity. The amount of water it will also drop rapidly. 2) The speed at which water passes through the membrane material is very sensitive to pressure changes. 3) The faster the water flow rate through the membrane material, the tighter the impurity deposits (also called filter cake) formed on the membrane material in the water, the faster the clogging speed, and the faster the water discharge decreases. 4) In order to reduce the flow rate of water through the membrane, it is advantageous to form relatively loose impurities on the membrane material, water is easy to pass, membrane clogging is not easy to occur, and the membrane is used for a longer period of time. Membrane materials are also a kind of capillary medium. The use of capillary media for micro-irrigation has been around for a long time, but it has not been successful. The reason is that the capillary medium is both an irrigation water material and a filter material. When the irrigation water passes through the interior, the capillary medium also filters the impurities in the water; when the filtration function is lost (the impurities are piled up and sealed pores) ), its irrigation function is no longer present (blocking). In order to maintain its long-term filtration performance, it is necessary to slow down the water flow rate or increase the water pressure as much as possible. It is not allowed to naturally flow out due to the influence of gravity. This will inevitably consume energy or labor; if any water naturally flows out, its irrigation function will follow The rapid loss of filtration function is lost. Therefore, how to make the irrigation function and filtration function of the capillary medium play a long-term role is the key to solve this problem. Summary of the invention

The inventors have found through experiments that the irrigation function and the filtering function of the capillary medium are respectively performed by the capillary medium having different characteristics, thereby effectively stabilizing the water through the capillary medium (capillary head) having the irrigation function and the capillary medium having the filtering function. (filter elements) speed, greatly extending them The use time has become a micro-irrigation device in the true sense of automatic and stable water supply. A key feature of the capillary in the capillary medium is the capillary force that is produced when it comes into contact with the soil.

The object of the present invention is to provide a micro-irrigating head, a micro-irrigator and a micro-irrigation system, which can effectively control the water passing speed of the capillary medium, and prolong the effective use time of the capillary medium, thereby making the whole device use time or The service life is greatly extended to achieve the purpose of long-term automatic irrigation.

It has been found through experiments that a hydrophilic capillary medium (capillary head) with a certain capillary force can be added to the water outlet end of a hydrophilic capillary shield (filter element) having a larger water area and smaller capillary pores. Stable water supply irrigation. Here, the capillary head produces capillary force after contact with the soil, and the water can only reach the soil by the filter element and the capillary head under the action of the capillary force. Capillary forces not only draw water into the soil, but also control the flow rate of water through the filter element. At the beginning, due to the capillary water output in the capillary, the amount of water passing through the filter element can be much lower than the natural water output of the water under the action of gravity, so that the impurities in the water form a relatively loose impurity on the surface of the filter element. The influence of the water content of the filter element is also small. At this time, the capillary head mainly plays a role in reducing the flow rate of the filter element; after a long period of water passing, the hybrid shield is gradually compacted, which is difficult under gravity. Through the water of the filter element, due to the capillary force generated by the capillary head contacting the soil, the water can continue to pass through the filter element into the soil, so that the water output of the filter element can be maintained for a relatively long period of time, and the capillary head mainly plays The action of the flow rate of the filter element is enhanced, so that the use time of the filter element is greatly extended, and the water output of the filter element is also greatly balanced. In the above process, the filter element mainly filters the impurities in the water to ensure that the water entering the capillary head does not cause clogging, so that the capillary force is maintained for a long time; the capillary capillary medium mainly functions to irrigate the water, and does not Intermittently, a control force (amount of water that passes through the filter element) is generated for the water passing through the capillary medium constituting the filter element. Ming: When the direction of the water pressure is the same as the pressure direction generated by the capillary force, which is greater than the water pressure of the capillary, the flow will be too large, which will affect the service life of the capillary and the filter element. When the water pressure direction and capillary force are generated When the pressure direction is opposite, and greater than or equal to the water pressure of the capillary head, there will be no water or water backflow. Wherein, the water pressure control pressure of the capillary head refers to the minimum pressure required for the capillary to pass through the gas after being fully wetted. On the other hand, the filter element also acts as a water pressure In this case, the effect of the flow of water through the capillary flow is reduced, that is, the water pressure of the capillary head is lowered to affect the flow rate. Based on the above, in the present invention, it is necessary to ensure that the absolute value of the water body pressure is smaller than the water pressure of the capillary head in general use, and the use time of the micro-irrigating head can be effectively extended. Even if the pressure of the water is large in a short time, the pressure should be reduced as much as possible below the water pressure of the capillary.

Based on the above principles, the present invention can achieve the object of the present invention by the following technical solutions. A micro-filling head comprising a water treatment chamber, the water treatment chamber is provided with a water inlet and at least one water outlet, wherein the water treatment chamber is provided with a filter element composed of a hydrophilic capillary medium, the outlet At least one capillary head is attached to the nozzle, and the capillary comprises an outer casing and a capillary-shaped inner core disposed in the outer casing.

The present invention also provides a micro-irrigator using the above micro-filling head, comprising a water storage container and a micro-irrigating head connected to the water storage container and communicating with the inner cavity of the water storage container, the micro-filling head including water a treatment chamber, the water treatment chamber is provided with a water inlet and at least one water outlet, wherein the water treatment chamber is provided with a filter element composed of a hydrophilic capillary medium, and at least one capillary head is connected to the water outlet The capillary head includes an outer casing and an inner core having a capillary action disposed in the outer casing. With this micro-irrigator, plants can be automatically irrigated for long periods of time without the need for manual management.

In the present invention, the water storage height of the water storage container can be set such that the absolute value of the water body pressure received by the inlet end of the capillary head is smaller than the water control pressure of the capillary head, so as to effectively extend the use time of the micro-fill head.

As an alternative embodiment, the micro-irrigator may be in the shape of a flower pot, and the side wall is at least partially a hollow structure having a hollow cavity, and the hollow cavity is formed as the water storage container. In this way, after the soil is placed in the pot-shaped percolator, it can be directly used for breeding flowers and plants, which is very convenient.

In this embodiment, the micro-fluid head can be coupled to the inner side wall of the hollow cavity forming the water storage container to be in communication with the water storage container.

The micro-filler can be connected to the water storage container through a connecting pipe and communicate with the water storage container. a jack is disposed on the side wall and/or the bottom of the flower pot-shaped micro-irrigator, and the micro-filler is inserted into the jack, and the outer end of the capillary head of the micro-filler is located at the flower In the basin, water is supplied to the flowers in the pot.

The present invention also provides a micro irrigation system using the above micro-filling head, the system comprising a water connection a water supply pipe of the source, wherein one or one micro-filler is connected to the water pipe, the micro-charge head includes a water treatment cavity, and the water treatment cavity is provided with a water inlet and at least one water outlet, The water inlet is provided with a filter element, and the water outlet is connected with at least one capillary head, and the capillary head comprises an outer casing and an inner core having a capillary action disposed in the outer casing.

In the micro-irrigation system, the water delivery pipe may be provided with a water inlet regulating valve and a flow meter for detecting the influent flow. In use, the regulating valve is connected to the pressurized water, and the regulating valve is opened to the corresponding position by calculating the total water output of all the connected capillary heads and indicating by the flow meter. Water passes through the filter element and the pipe to the position of all the capillary heads, and the water is sucked into the soil under the capillary force generated by the contact between the capillary head and the soil. In the present invention, the regulating valve should control the pressure of the water body at the inlet end of the capillary head to be less than the water pressure of the capillary head for most of the time, and preferably the valve control water volume should be lower than the filter element and the capillary head in the natural state. The amount of water that can be used to increase the life of the filter element and the capillary. Since it is inconvenient to replace the capillary head in the underground, it is important to extend the service life. Therefore, the capillary head with a water discharge capacity greater than the actual water demand should be selected to delay the clogging time of the capillary head. Adjusting the valve to control the amount of water is the first to slow down the flow rate of the filter surface. Therefore, the filter element with larger area should be used as much as possible, so that the surface of the filter element is loosely packed and the membrane is used for a long time. As the membrane is gradually blocked, it can be adjusted step by step. Adjust the valve to maintain the water volume; when the adjustment of the gate is unable to maintain the water output, the filter element can be replaced. This reciprocation maximizes the use of the capillary head. Ensure that the pore diameter of the capillary is maintained at 1-100 microns, that is, the water pressure of the capillary is maintained between 3-600KPa, so as to achieve automatic long-term water supply for the system.

The water delivery pipe of the micro irrigation system of the present invention includes a main pipe connected to a water source and one or more branch pipes connected to the main pipe. Quality composition.

The above filter element of the present invention may be composed of one or more layers of filter membranes.

In the present invention, the maximum pore size of the filter element may be smaller than the maximum pore size of the capillary head, which is more advantageous for the realization of the present invention. According to the usual idea: the pores of the filter element are too small to pass water; especially if the pores of the filter element are smaller than the maximum pore size of the capillary, then the capillary force of the filter element will More than the capillary force of the capillary, the capillary can not automatically draw water from the inlet through the filter element to the water outlet, which can not be achieved by capillary irrigation. However, in the present invention, since the filter element is completely immersed in water, there is no surface tension formed by the gas-liquid interface, and there is no capillary force; in addition, the filter element is a hydrophilic filter membrane, and adjacent pores thereof The water will be connected in one piece, causing the surface tension to decrease and the resistance to decrease. Therefore, although the pores are small, water flows as long as the pressure on both sides of the filter element is different. When the capillary head is in contact with the soil, the pressure on the water discharge side of the filter element is made smaller than the pressure on the water inlet side due to the water absorbing effect of the capillary force, so that the water can be easily flowed through the filter element. Furthermore, the amount of water in the capillary is very small, so although the filter element has a small area and a low amount of water, it can satisfy the needs of the capillary. It has been found through inspection that the optimum pore size of the filter element is: the maximum pore size of the capillary head is between 1 μm and 100 μm; the maximum pore size of the filter element is between 0.: 敫 - 50 μm. The water passing area of the filter membrane is large, and the water flow rate is inevitably lowered, which is more conducive to the realization of looser impurities, and the use time of the filter membrane is prolonged. Practice has shown that the water passing area of the filter element is more than 10 times the water passing area of the capillary head, which can effectively extend the use time of the film. The optimal water filter area of the filter element is more than 100 times the area of the capillary head.

In the present invention, the water outlet of the micro-irrigating nozzle may have two or more water outlets. In the present invention, two or more capillary heads may be connected to the water outlet of the water treatment chamber of the micro-filler.

In the present invention, the capillary head of the micro-irrigator can be connected to the water outlet of the water treatment chamber through a connecting pipe.

In the invention, since the water is filtered by the dense filter element before the capillary head absorbs water, the effluent capillary head can be controlled to an acceptable range by the influence of physical and chemical clogging, thereby greatly prolonging the service life of the capillary head. Moreover, since the capillary outlet pipe of the capillary head is extremely thin, it can generate water absorption power after contacting the soil, so that the water output can be precisely controlled to be consistent with the plant water demand speed, so that the system can achieve automatic water supply all the time, not only saves water, but also does not appear. Negative pressure inhalation of soil particles causes blockage; plant roots are also unlikely to invade into much smaller pores causing blockage; due to capillary forces Function, each capillary is like a small pump. As long as it touches the soil, the capillary in the capillary will continuously suck the water into the soil, changing the defect that the drip irrigation does not generate power, and the tube resistance and pressure change. The impact is much smaller.

Further, the micro-irrigation system of the present invention controls the water discharge speed by utilizing the water inflow regulating valve and the flow meter for detecting the influent flow rate, so that the inflow flow rate of the water pipe is lower than that of all the micro-irrigating heads connected to the water pipe in nature. The total amount of water in the state, which forms the unsaturated effluent irrigation of the capillary head, greatly prolongs the service life of the capillary head; and when the water volume of the capillary head is decreased after prolonged use, the inlet water quantity regulating valve can be adjusted to be appropriate Increase the water pressure to maintain the water output. DRAWINGS

Figure 1 is a schematic view showing the structure of a micro-filler of the present invention;

Figure 2 is a schematic view showing another structure of the micro-filler of the present invention;

Figure 3 is a schematic view showing still another structure of the micro-filler of the present invention;

Figure 4 is a schematic view showing the structure of the micro-irrigator of the present invention;

Figure 5 is a schematic view showing another structure of the micro-irrigator of the present invention;

Figure 6 is a schematic view showing still another structure of the micro-irrigator of the present invention;

Figure 7 is a schematic view showing the structure of the micro-irrigation system of the present invention. detailed description

As shown in Fig. 1-3, the present invention provides a micro-irrigating head 1 including a water treatment chamber 11 having a water inlet 12 and at least one water outlet 13 disposed therein. A filter element 14 composed of a hydrophilic capillary medium is disposed in the cavity 11, and at least one capillary head 15 is connected to the water outlet 13 . The capillary head 15 includes a casing 151 and a capillary provided in the casing 151. The inner core 152 that acts. Thus, in use, before the capillary 15 is absorbed, the water is filtered by the filter element 14, and the effluent capillary 15 can be controlled to an acceptable range by the physicochemical blockage, thereby greatly extending the capillary 15 Service life; at the same time, the capillary is in the capillary 15 The amount of water, the amount of water passing through the filter element 14 can be far greater than the natural water output of the water under the action of gravity, so that the influence of the impurities in the water on the filter element 14 will be small, and the service life of the filter element 14 will also be large. The extent is extended. Moreover, since the capillary outlet pipe of the capillary head 15 is extremely thin, the water output can be accurately controlled to be consistent with the plant water demanding speed, so that the system can provide all-weather water supply, not only saves water, but also does not cause blockage caused by negative pressure inhaling soil particles. Plant roots are also unlikely to invade much smaller pores causing blockages; due to capillary forces, each capillary 15 is like a small pump, and as long as it touches the soil, the capillary in the capillary 15 will continue to flow. Inhalation of the soil in the ground changes the defect that the drip irrigation outlet does not generate power.

As shown in FIG. 4-6, the present invention also provides a micro-irrigator 2 using the micro-filling head 1 described above, including a water storage container 21 and connected to the water storage container 21 and connected to the inner cavity of the water storage container 21. The micro-filling head 1 includes a water treatment chamber 11 , and the water treatment chamber 11 is provided with a water inlet 12 and at least one water outlet 13 , and is disposed in the water treatment chamber 11 . The filter element 14 is composed of a hydrophilic capillary medium, and the water outlet 13 is connected with at least one capillary head 15, and the capillary head 15 includes a casing 151 and a capillary-shaped inner core 152 disposed in the casing 151. By using the micro-irrigator 2 of the present invention, since the micro-irrigator 1 is used to supply water into the soil, the filter element 14 in the micro-irrigator 1 filters the water, and the water storage container is continuously discharged under the capillary force of the capillary head 15. The water in 21 is slowly inhaled into the soil, enabling long-time automatic irrigation of the plants without the need for manual management, which not only greatly saves water but also reduces maintenance costs.

The water storage container 21 of the present invention can be a water storage container 12 which is a water storage chamber in the middle as shown in FIG. 4, and can be buried near the root of the underground plant, the end of the capillary head 15 of the micro-filler 1. The part touches the soil near the roots of the plant, allowing the plants to be automatically irrigated for long periods of time.

As an alternative embodiment, as shown in FIG. 5-6, the micro-irrigator 2 of the present invention may also be in the shape of a flower pot, the sidewall of which is at least partially a hollow structure having a hollow cavity, and the hollow cavity is formed as described above. Water storage container 21. In this way, after the soil is placed in the flower pot-shaped percolator 2, it can be used as a flower pot, and can be directly used for breeding flowers and plants, which is very convenient. A water injection port 22 may be provided at the top of the water storage container 21 of the flower pot-shaped percolator 2, and after the water in the water storage container 21 is used up, water may be added to the water storage container 21 through the water injection port. In this embodiment, as shown in FIG. 5, the nozzle 1 can be connected to the inner side wall of the hollow cavity forming the water storage container 21, and the water storage container. The first phase of the capillary head 15 of the micro-irrigator 1 can be inserted into the soil placed in the middle of the flower-shaped micro-irrigator 2, thereby supplying water to the plant in the soil.

As shown in Fig. 6, the micro-filler 1 can be connected to the water storage container 21 through a connecting pipe 16 to communicate with the water storage container 21.

As shown in FIG. 6 , a socket 23 may be disposed on the side wall and/or the bottom of the flower pot-shaped micro-irrigator 1 , and the filling head 1 is inserted into the insertion hole 23 . And the outer end of the capillary head 15 of the 启灌灌位于 1 is located in the soil in the flower pot, thereby supplying water to the flowers in the flower pot. In this way, since the micro-fluid head 1 is inserted into the flower pot through the insertion hole 23 on the side wall or the bottom of the flower pot, the micro-fill head 1 can be easily replaced after a certain period of use.

As shown in FIG. 7, the present invention also provides a micro-irrigation system using the micro-irrigating head 1 described above, which system comprises a water supply pipe 3 connected to a water source, and one or more micro-irrigation is connected to the water supply pipe 3 The head 1 includes a water treatment chamber, and the water treatment chamber 11 is provided with a water inlet 12 and at least one water outlet 13 , and the water treatment chamber 11 is provided with a hydrophilic The filter element 14 is composed of a capillary medium, and the water outlet 13 is connected with one or more capillary heads 15, and the capillary head 15 includes a casing 151 and a capillary-shaped inner core 152 disposed in the casing 151.

In the present invention, the water delivery pipe 3 may further be provided with a water inflow regulating valve 31 and a flow meter 32 for detecting the influent flow rate. The influent water regulating valve 31 of the micro-irrigation system of the present invention adjusts the inflow flow rate of the water delivery pipe 3 preferably lower than the total water discharge amount of all the capillary heads 15 connected to the water delivery pipe 3 in the natural state to improve the filter element 14 And the service life of the capillary 15 .

As a specific embodiment, as shown in FIG. 7, an example of a micro-filler 1 is connected to the water pipe 3, and the capillary 15 can be connected to the water outlet 13 of the water treatment chamber 11 through a connecting pipe, the connection The pipe is connected to the main pipe 33 of the water discharge port 13 of the water treatment chamber 11 and the one or more branch pipes 34 connected to the main pipe 33, so that the capillary head is connected to the water treatment through the main pipe 33 and the branch pipe 34. The water outlet 13 of the cavity 11 is on. When used, the regulating valve 31 is connected to the pressurized water. By calculating the total water output of all the connected capillary heads 15, the regulating valve 31 is opened to the corresponding position according to the indication of the flow meter 32, and the water passes through the water pipe 3 and the water treatment chamber connected to the water source. 11 and the main pipe 33 connected to the water treatment chamber and one or more branch pipes 34 reach the position of all the capillary heads 15, and the water is sucked into the soil under the attraction of the capillary force generated by the contact of the capillary head 15 with the soil. .

In the present invention, as another alternative embodiment, the water pipe 3 may also include a main pipe connected to the water source and two or more branch pipes connected to the main pipe, and the micro-filler is also Correspondingly there are two or more, and are respectively connected to the branch pipe (not shown).

In the present invention, since it is inconvenient to replace the capillary head 15 in the underground, it is important to extend the service life. Therefore, the capillary head 15 having a water discharge capacity larger than the actual water demand should be selected to delay the clogging time of the capillary head 15.

The inner core of the above-described capillary head 15 of the present invention may be composed of a hydrophilic capillary medium having a capillary action. The hydrophilic capillary medium comprises a porous medium and a capillary bundle, wherein the capillary bundle comprises a capillary bundle formed by a plurality of irregular hollow tubes formed between a plurality of hydrophilic lines.

As shown in Fig. 1-3, the above filter element 14 of the present invention may be composed of one or more layers of filter membranes. Of course, the filter element 14 of the present invention may also be composed of a hydrophilic capillary medium, such as a capillary head having a filtering function, and is not limited herein.

In the present invention, the filter element 14 composed of the filter membrane may have a maximum pore diameter smaller than the maximum pore diameter of the capillary head 15, to be more advantageous for the realization of the present invention. In the present invention, the optimum pores of the capillary head 15 and the filter element 14 composed of the filter membrane are: the maximum pore diameter of the capillary head 1 is between 1 μm and 100 μm; the maximum pore diameter of the filter element 14 composed of the filter membrane is 0. 1 micron to 50 microns.

Since the water passing area of the filter element 14 is large, the flow rate of the water is inevitably lowered, which is more advantageous for achieving a looser impurity stacking and prolonging the use time of the filter membrane. Therefore, in the present invention, the filter element 14 composed of the filter membrane is used. The water passing area may be larger than the water passing area of the capillary head 1. The water-passing area of the filter element 14 composed of the filter membrane is 10 times or more of the water-passing area of the capillary head 15, and the use time of the membrane can be effectively extended. It is preferable that the water passing area of the filter element 14 composed of the filter membrane is 100 times or more of the water passing area of the capillary head 15. As shown in FIGS. 2 and 3, in the present invention, the water outlet 13 of the water treatment chamber 11 of the micro-irrigator 1 may be two or more.

As shown in FIG. 3, in the present invention, two or more capillary heads 15 can be connected to the water outlet 13 of the water treatment chamber 11 of the micro-filler 1 to facilitate multiple positions at the same time. Water supply.

As shown in Fig. 3, in the present invention, the capillary head 15 of the micro-irrigator 1 can be connected to the water outlet 13 of the water treatment chamber 11 through a connecting pipe 16.

The above-described embodiments are merely preferred embodiments of the present invention, and are merely illustrative of the present invention and are not intended to limit the present invention.

Claims

Claim

A micro-filling head, comprising: a water treatment chamber; the water treatment chamber is provided with a water inlet and at least one water outlet, and the water treatment chamber is provided with a hydrophilic capillary medium. The filter element is connected to the water outlet with at least one capillary head, and the capillary head comprises an outer casing and a capillary inner core disposed in the outer casing.

The micro-filler according to claim 1, wherein the inner core is composed of a hydrophilic capillary medium having a capillary action.

The micro-filler according to claim 1, wherein the filter element is composed of one or more layers of filter membranes.

4. The micro-filler of claim 3, wherein the filter element has a maximum aperture that is less than a maximum aperture of the capillary.

5. The micro-filler of claim 1, wherein the capillary has a maximum aperture of: 敖米 - l QG meters.

The micro-filler according to claim 1 or 5, wherein the filter element has a maximum pore diameter of 0.1 pm - 50 μm.

7. The micro-irrigating head according to claim 3, wherein the filter element has a water passing area larger than a capillary head water passing area.

8. The micro-irrigating head according to claim 7, wherein the filter element has a water passing area that is more than 10 times the water passing area of the capillary head.

9. The micro-irrigator of claim 7, wherein the filter element has a water passing area that is more than 100 times the water passing area of the capillary.

The micro-filler according to claim 1, wherein the water outlets are two or more.

The micro-filler according to claim 1, wherein two or more capillary heads are connected to the water outlet.

12. The micro-filler of claim 1 wherein said capillary head is connected The tube is connected to the water outlet of the water treatment chamber.

13. A micro-irrigator, comprising: a water storage container; and a micro-irrigating head connected to the water storage container and communicating with the inner cavity of the water storage container, the micro-filling head comprising a water treatment chamber, water The processing chamber is provided with a water inlet and at least one water outlet, wherein the water treatment chamber is provided with a filter element composed of a hydrophilic capillary medium, and the water outlet is connected with at least one capillary head, and the capillary head comprises An outer casing and a capillary inner core disposed within the outer casing.

The micro-irrigator according to claim 13, wherein the water storage height of the water storage container is set such that the absolute value of the water body pressure received by the inlet end of the capillary head is smaller than the water control pressure of the capillary head.

The micro-irrigator according to claim 13, wherein the micro-irrigator is in the shape of a flower pot, and a side wall thereof is at least partially a hollow structure having a hollow cavity, and the hollow cavity is formed as the water storage body. container.

The micro-irrigator according to claim 15, wherein the micro-filler is connected to an inner side wall of the hollow cavity forming the water storage container and communicates with the water storage container.

The micro-irrigator according to claim 13 or 15, wherein the nozzle is connected to the water storage container through a connecting pipe and communicates with the water storage container.

The micro-irrigator according to claim 17, wherein a socket is provided on a side wall and/or a bottom of the flower-shaped micro-irrigator, and the micro-irrigator is inserted in the Inside the jack.

The micro-irrigator according to claim 13, wherein the inner core is composed of a hydrophilic capillary medium having a capillary action.

The micro-irrigator according to claim 13, wherein the filter element is composed of one or more layers of filter membranes.

21. The micro-irrigator of claim 20, wherein the filter element has a maximum aperture that is less than a maximum aperture of the capillary.

The micro-irrigator according to claim 13, wherein the capillary has a maximum pore diameter of from 1 μm to 100 m.

The micro-irrigator according to claim 13 or 22, wherein the filter element has a maximum pore diameter of 0.1 m to 50 μm.

The micro-irrigator according to claim 20, wherein the filter element has a water surface The product is larger than the water area of the capillary.

The micro-irrigator according to claim 24, wherein the filter element has a water-passing area that is more than 10 times the water-passing area of the capillary.

The micro-irrigator according to claim 24, wherein the filter element has a water-passing area that is more than 100 times the water-passing area of the capillary.

The micro-irrigator according to claim 13, wherein the water outlets are two or more.

The micro-irrigator according to claim 13, wherein two or more capillary heads are connected to the water outlet.

29. A micro-irrigation system, characterized in that the system comprises a water supply pipe connected to a water source, and one or more micro-irrigating heads are connected to the water supply pipe, and the micro-irrigating head comprises a water treatment cavity. The water treatment chamber is provided with a water inlet and at least one water outlet, wherein the water treatment chamber is provided with a filter element composed of a hydrophilic capillary medium, and the water outlet is connected with at least one capillary head, the capillary The head includes an outer casing and a capillary inner core disposed within the outer casing.

30. The micro-irrigation system according to claim 29, wherein the water pipe is provided with a flow meter for adjusting the inlet water volume and detecting the inlet water flow rate.

The micro-irrigation system according to claim 30, wherein the inlet water quantity regulating valve adjusts the water inlet amount so that the absolute value of the water body pressure received by the capillary head inlet end is smaller than the capillary water pressure control pressure.

32. The micro-irrigation system according to claim 30, wherein the inlet water quantity regulating valve adjusts a water flow rate of the water supply pipe lower than a total of all the micro-irrigating heads connected to the water supply pipe in a natural state. The amount of water.

33. The micro-irrigation system according to claim 29, wherein the water treatment chamber has two or more water outlets.

The micro-irrigation system according to claim 29 or 33, wherein two or more capillary heads are connected to the water outlet.

35. The micro-irrigation system according to claim 34, wherein the capillary head is connected The tube is connected to a water outlet of the water treatment chamber, the connection tube comprising a main ¹ connected to the water treatment chamber and one or more branch lines connected to the main conduit.

36. The micro-irrigation system of claim 29, wherein the water conduit comprises a main conduit connected to a water source and one or more branch conduits connected to the main conduit.

37. The micro-irrigation system according to claim 29, wherein the inner core of the capillary head is composed of a hydrophilic capillary medium having a capillary action.

38. The micro-irrigation system according to claim 29, wherein the filter element is composed of one or more layers of filter membranes.

39. The micro-irrigation system of claim 38, wherein the filter element has a maximum aperture that is less than a maximum aperture of the capillary.

40. The micro-irrigation system according to claim 29, wherein the capillary head has a maximum pore diameter of 1 m to 10 (MI: m.

The micro-irrigation system according to claim 29 or 40, wherein the filter element has a maximum pore diameter of 0.1 μm to 50 μm.

42. The micro-irrigation system of claim 38, wherein the filter element has a water surface area that is greater than a water passage area of the capillary head.

43. The micro irrigation system according to claim 42, wherein the filter element has a water passing area that is more than 10 times the water passing area of the capillary head.

44. The micro-irrigation system according to claim 42, wherein the filter element has a water-passing area that is more than 100 times the water-passing area of the capillary head.