CN108849414B - Oxygenation anti-clogging infiltrating irrigation system - Google Patents

Abstract

The invention discloses an oxygenation anti-clogging infiltrating irrigation system, wherein stored water in a water storage tank passes through a filtering device and then sequentially infiltrates into a stratum through a main pipe and a plurality of branch pipes, each branch pipe is provided with an seepage hole, the upstream side wall of each seepage hole is provided with a flow guide surface which gradually inclines backwards, the downstream side wall of each seepage hole is provided with an elastic valve which gradually inclines forwards, and the length of the elastic valve is greater than that of the flow guide surface. When the branch pipe has water pressure, the water pressure forces the elastic valve to turn back and forth, so that the seepage hole is opened. When the machine is stopped, the elastic valve can be tightly attached to the edge of the flow guide surface, so that the seepage hole is completely sealed, and the condition that slurry enters the branch pipe to cause blockage can be prevented. The air supplement process of the negative pressure balance air valve can supplement the air of the root zone, and the oxygen increasing effect of the root zone is achieved.

Description

Oxygenation and anti-clogging infiltration irrigation system

Technical field:

The invention belongs to the field of high-efficiency water use, water and fertilizer integrated agricultural water saving, and in particular relates to a system capable of improving the utilization rate of water and fertilizer and preventing pipeline blockage.

Background technique:

Water-saving irrigation is an inevitable trend of agricultural development in my country. In order to further accelerate the promotion and application of water and fertilizer integration technology, the country has issued a series of good policies. In large areas, focusing on the six major crops of corn, wheat, potato, cotton, vegetables and fruit trees, promote the integration of water and fertilizer technology. By 2020, the promotion area of water and fertilizer integration technology will reach 150 million mu, an increase of 80 million mu. The No. 1 Central Document in 2017 clearly proposed to vigorously popularize water-saving irrigation technologies such as sprinkler irrigation, drip irrigation and infiltration irrigation, and increase the promotion of agronomic water-saving such as water and fertilizer integration.

Infiltration irrigation is another water-saving irrigation technology after sprinkler irrigation and drip irrigation. It originated from underground infiltration irrigation. It is one of the most advanced agricultural water-saving irrigation technologies in the world today, and it is also one of the main irrigation technologies for water and fertilizer integration. Infiltration irrigation is a form of underground micro-irrigation. This irrigation method uses low-pressure pipes to deliver water, and then through the irrigator (micro-porous infiltration irrigation pipe) buried in the active layer of the crop root system, according to the growth of crops. Seepage water in the soil supplies crops. Therefore, infiltration irrigation can be regarded as a special form of drip irrigation, also known as underground drip irrigation. Compared with other irrigation technologies, infiltration irrigation technology has the advantages of water saving, land saving, labor saving and low energy consumption, and has become the main measure in water saving irrigation technology.

Although the infiltration irrigation technology has the above advantages, it is still not widely used. , and cause changes in flow rate, resulting in uneven water output, and even blockage, resulting in reduced irrigation quality.

Existing infiltration irrigation devices usually do not have the functions of anti-suck back and steady flow water pressure, often because of the negative pressure generated in the infiltration irrigation pipeline, inhaling debris and blocking the pipeline, and when the water flow pressure is unstable, the water flow cannot be effectively carried out. Therefore, it will affect the large-scale popularization and application of infiltration irrigation technology.

Invention content:

Aiming at the problems that the branch pipes are easily poured into muddy water under the influence of reverse pressure in the current pipeline irrigation system, and the problem of poor oxygenation, the invention provides an oxygen-enhancing and anti-clogging infiltration irrigation system, and a method for manufacturing an anti-clogging infiltration irrigation branch pipe. Anti-clogging infiltration irrigation structure.

The technical scheme adopted in the present invention is an oxygen-enhancing and anti-clogging infiltration irrigation system and a method for manufacturing an anti-clogging infiltration irrigation branch pipe. The branch pipes are respectively provided with seepage holes, and valves are arranged on the relevant pipelines. The upstream side walls of each seepage hole of each branch pipe are provided with a guide surface that gradually slopes backwards, and the downstream side walls of each seepage hole are provided with gradually forward. The inclined elastic valve, the elastic valve is an arc structure inclined forward; the length of the elastic valve is greater than the length of the guide surface, and the elastic valve and the guide surface can completely seal each seepage hole in the natural state; The end of each branch pipe is provided with an intake and exhaust pipe, a layer of gauze is covered on the outside of the branch pipe to prevent valve blockage, and the height of the nozzle of each intake and exhaust pipe is higher than the ground; The negative pressure air intake pipe is provided with a negative pressure balance air valve, and the nozzle of the negative pressure air intake pipe is provided with a negative pressure air intake cover.

The upper side of the water outlet at the bottom of the reservoir is provided with a coarse filter device, and the water outlet of the reservoir is connected to the negative pressure air inlet pipe after passing through the valve and the filter in sequence, and the negative pressure air inlet pipe is communicated with the main pipe. A fertilizer tank is arranged upstream of the main pipe, and the negative pressure air intake pipe is connected to the downstream of the fertilizer tank.

A layer of filter screen is wrapped on the outside of each branch pipe. A restrictor valve is installed at the head end of each branch pipe.

The upper side of the negative pressure air intake hood is provided with an air inlet and is covered with a filter layer.

An anti-clogging infiltration perfusion structure, the upstream side wall of each seepage hole of the branch pipe is provided with a guide surface that is gradually inclined backward, and the downstream side wall of each seepage hole is provided with an elastic valve that is gradually inclined forward. The length is greater than the length of the guide surface, and the elastic valve and the guide surface can completely seal each seepage hole in a natural state. The elastic valve is an arc structure inclined forward; a layer of gauze is covered on the outside of the branch tube to prevent the valve from being blocked.

A method for manufacturing an anti-clogging infiltration irrigation branch pipe, the inner wall of the branch pipe is supported by a hard inner mold on the inner side of the branch pipe, and the inner mold hole corresponding to the seepage hole of the branch pipe is arranged on the inner mold; the branch pipe and the mold are heated to the softening degree of the branch pipe; A semi-circular groove is formed by punching inward from the outer wall of the branch pipe along the die hole position with a semi-circular punch. The upstream side wall of the semi-circular groove is connected to the inner wall of the branch pipe, and the downstream side wall of the semi-circular groove is connected to the branch pipe. The inner wall is broken, so that the inner surface of the semi-circular groove is gradually inclined backward as a guide surface, and the semi-circular groove is broken to form a seepage hole; Elastic valve, the elastic valve and the guide surface can completely seal each seepage hole in the natural state. The elastic valve is fixed on the downstream side wall of the seepage hole by heat sealing.

The present invention has the following beneficial effects: 1. The present invention is provided with a guide surface that is gradually inclined backwards on the upstream side wall of the branch pipe infiltration hole, and the downstream side wall is provided with an elastic valve that is gradually inclined forward. The elastic valve and the guide surface are provided with the following beneficial effects: 1. In the natural state, each seepage hole can be completely sealed. When the branch pipe has water pressure, since the length of the elastic valve is greater than the length of the guide surface, the water pressure makes the elastic valve turn back and forth, thereby opening the seepage hole. At the moment of shutdown, a reverse negative pressure phenomenon will be formed in the pipeline. At this time, since the water pressure of the branch pipe disappears and turns into negative pressure, the elastic valve can be closely attached to the edge of the guide surface, so that the seepage hole is completely sealed, which can prevent Mud enters the branch pipe and causes blockage.

2. In the system, the end of each branch pipe is provided with an intake and exhaust pipe higher than the ground, which plays an exhaust role in the initial stage of startup, and can make up for the negative pressure phenomenon in the branch pipe at the moment of shutdown, and suck the air into the branch pipe through the intake and exhaust pipe. , which further weakens the power of the mud to enter the seepage hole.

3. A negative pressure balance mechanism is also set up in the system. At the same time of irrigation, the air supply process of the negative pressure balance air valve can supplement the air in the root zone, which has the effect of increasing oxygen in the root zone.

4. The anti-clogging infiltration irrigation structure is easy to realize and automatic production, its structure is reasonable, the cost is low, the use effect is good, and it is suitable for popularization and application.

Description of drawings

Fig. 1 is the schematic diagram of the cross-sectional structure of the branch pipe of the infiltration irrigation branch pipe in the non-infiltration irrigation state;

Fig. 2 is the schematic diagram of the cross-sectional structure of the branch pipe of the infiltration irrigation branch pipe in the infiltration irrigation state;

Fig. 3 is the sectional structure schematic diagram of the negative pressure balance mechanism;

Fig. 4 is the schematic diagram of the present invention's startup infiltration irrigation process;

FIG. 5 is a schematic diagram of the process of shutting down and resisting clogging according to the present invention.

In the figure, the symbol 1 is a reservoir, 2 is a coarse filter device, 3 is a filter, 4 is a valve, 5 is a main pipe, 6 is a reducing tee, 7 is a restrictor valve, 8 is a branch pipe, and 9 is a seepage hole , 10 is the intake and exhaust pipe, 11 is the negative pressure intake cover, 12 is the negative pressure intake pipe, 13 is the negative pressure balance valve, 14 is the guide surface, 15 is the elastic valve, and 16 is the filter layer.

Detailed ways:

Example 1: An oxygen-enhancing and anti-clogging infiltration irrigation system and a method for manufacturing an anti-clogging infiltration irrigation branch pipe, as shown in FIG. 4 and FIG. 5 . The water stored in the reservoir 1 passes through the filter device and then infiltrates into the formation through the main pipe 5 and a plurality of branch pipes 8. Each branch pipe 8 is respectively provided with seepage holes 9, and the relevant pipelines are provided with valves 4. Specifically, a coarse filter device 2 is provided on the upper side of the water outlet at the bottom of the reservoir 1. The water outlet of the reservoir 1 passes through the valve 4 and the filter 3 in sequence and communicates with the negative pressure air intake pipe 12. The negative pressure air intake pipe 12 Connected to main 5. At the same time, referring to FIG. 3 , a negative pressure air intake pipe 12 is provided upward on the water inlet pipe communicated with the main pipe 5, the negative pressure air intake pipe 12 is installed with a negative pressure balance air valve 13, and the nozzle of the negative pressure air intake pipe 12 is provided with a negative pressure Intake hood 11 . A fertilizer tank can be set upstream of the main pipe 5, because a negative pressure balance valve 13 is added after the fertilizer tank of the infiltration irrigation system to adjust the air pressure in the balanced infiltration irrigation underground pipe, so as to solve the problem of soil negative pressure suction and sludge blockage. The air supply process of the negative pressure balance air valve 13 can supplement the air in the root zone, and has the effect of increasing oxygen in the root zone.

Referring to FIGS. 1 and 2 , the upstream side wall of each seepage hole 9 of each branch pipe 8 is provided with a guide surface 14 that is gradually inclined backward, and the downstream side wall of each seepage hole 9 is provided with an elastic valve 15 that is gradually inclined forward. , the length of the elastic valve 15 is greater than the length of the guide surface 14, and the elastic valve 15 and the guide surface 14 can completely seal each seepage hole 9 in a natural state; 10. The height of the nozzle of each intake and exhaust pipe 10 is higher than the ground. A restrictor valve 7 is respectively installed at the head end of each branch pipe 8 .

When the branch pipe 8 has water pressure, since the length of the elastic valve 15 is greater than the length of the guide surface 14 , the water pressure makes the elastic valve 15 turn back and forth, thereby opening the seepage hole 9 . At the moment of shutdown, a reverse negative pressure phenomenon will be formed in the pipeline. At this time, since the water pressure of the branch pipe 8 disappears and turns into negative pressure, the elastic valve 15 can be closely attached to the edge of the guide surface 14, so that the seepage hole 9 is completely Sealing can prevent mud from entering the branch pipe 8 to cause blockage. In the system, the end of each branch pipe 8 is provided with an intake and exhaust pipe 10 which is higher than the ground, which plays an exhaust role in the initial stage of startup, and can make up for the negative pressure phenomenon in the branch pipe 8 at the moment of shutdown, so that the air is discharged into the intake and exhaust pipes. 10 is sucked into the branch pipe 8, which further weakens the power of the mud entering the seepage hole 9.

It is also possible to wrap a layer of filter screen on the outside of each branch pipe. And an air inlet is provided on the upper side of the negative pressure air intake cover 11 and covered with a filter layer 16 .

Example 2: An anti-clogging infiltration irrigation structure, see Figures 1 and 2, the upstream side walls of each seepage hole 9 of the branch pipe 8 are provided with a guide surface 14 that is gradually inclined backward, and the downstream side wall of each seepage hole is provided with There is an elastic valve 15 inclined forward gradually, the length of the elastic valve 15 is greater than the length of the guide surface 14, and the elastic valve 15 and the guide surface 14 can completely seal each seepage hole 9 in a natural state. The elastic valve 15 is an arc-shaped structure inclined forward.

When the water passes through, the valve is automatically opened by the water pressure. When no water passes through the pipe, it is in a closed state, blocking the seepage hole. In the negative pressure state, the external pressure is stronger than the internal pressure. However, the presence of the valve structure prevents the invasion of soil. At the same time, a layer of gauze is put on the outside of the tube to prevent the valve from being blocked, and the irrigation area of the water can be increased to achieve a better infiltration irrigation effect.

Embodiment 3: a method for manufacturing an anti-clogging infiltration irrigation branch pipe, comprising the steps of:

Step 1: The inner wall of the branch pipe 8 is supported on the inner side of the branch pipe 8 by a hard inner mold, and the inner mold is provided with an inner mold hole corresponding to the seepage hole 9 of the branch pipe 8 .

The second step: heating the branch pipe 8 and the die to the softening degree of the branch pipe 8; using a semicircular punch to punch inward from the outer wall of the branch pipe 8 along the die hole position to form a semicircular groove, the upstream side of the semicircular groove The wall is connected with the inner wall of the branch pipe 8, and the downstream side wall of the semicircular groove is disconnected from the inner wall of the branch pipe 8, so that the inner surface of the semicircular groove is gradually inclined backward as the guide surface 14, and the semicircular groove is disconnected out to form seepage holes 9 .

Step 3: An elastic valve 15 that is gradually inclined forward is arranged on the downstream side wall of the seepage hole 9. The elastic valve 15 and the guide surface 14 can completely seal each seepage hole 9 in a natural state. Referring to FIG. 5 , the elastic valve 15 can be fixed on the downstream side wall of the seepage hole 9 by heat sealing. The anti-clogging infiltration irrigation structure is easy to realize and can be automatically produced and manufactured, and the cost is low.

Claims (6)

1. The utility model provides an anti filtration irrigation system that blocks up of oxygenation, the water storage in the cistern passes through filter equipment back in proper order through being responsible for and many spinal branchs pipe to the infiltration irrigation in the stratum, and every spinal branch pipe sets up the seepage hole respectively to and be provided with valve, characterized by on relevant pipeline: the upstream side wall of each seepage hole of each branch pipe is provided with a guide surface which is gradually inclined backwards, the downstream side wall of each seepage hole is provided with an elastic valve which is gradually inclined forwards, and the elastic valve is of an arc structure which is inclined forwards; the length of the elastic valve is greater than that of the flow guide surface, and the elastic valve and the flow guide surface can completely seal each seepage hole in a natural state; moreover, the tail ends of the branch pipes are provided with air inlet and outlet pipes, a layer of gauze is sleeved outside the branch pipes to prevent the valves from being blocked, and the pipe orifices of the air inlet and outlet pipes are higher than the ground; meanwhile, a negative pressure air inlet pipe is upwards arranged on the water inlet pipe communicated with the main pipe, a negative pressure balance air valve is installed on the negative pressure air inlet pipe, and a negative pressure air inlet cover is arranged at the pipe orifice of the negative pressure air inlet pipe.

2. The oxygen-increasing anti-clogging filtration irrigation system according to claim 1, characterized in that: the delivery port upside of cistern bottom is provided with the coarse filtration device, the delivery port of cistern pass through valve and filter in proper order after with negative pressure intake pipe intercommunication, the negative pressure intake pipe with be responsible for the intercommunication.

3. The oxygen-increasing anti-clogging filtration irrigation system according to claim 1, characterized in that: the upper part of the main pipe is provided with a fertilizer tank, and the negative pressure air inlet pipe is communicated with the lower part of the fertilizer tank.

4. The oxygen-increasing anti-clogging filtration irrigation system according to claim 1, characterized in that: and a layer of filter screen is wrapped at the outer side of each branch pipe.

5. The oxygen-increasing anti-clogging filtration irrigation system according to claim 1, characterized in that: the head end of each branch pipe is respectively provided with a flow limiting valve.

6. The oxygen-increasing anti-clogging filtration irrigation system according to claim 1, characterized in that: the upper side of the negative pressure air inlet cover is provided with an air inlet and is covered with a filter layer.

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