Wide underground porous wheat watering device

Abstract

The utility model belongs to the technical field of wheat irrigation, and particularly relates to a wide underground porous wheat watering device. Comprising a water storage tank, the water storage tank is connected with a water supply pump through a main pipe, the water supply pump is connected with two filters in parallel through the main pipe, and the two filters are jointly connected with an adjusting valve in series through the main pipe; pressure sensors are installed on the main pipes at the output end of the water supply pump, the output end of the adjusting valve and the output ends of the two filters, reflux valves are installed on the main pipes at the input ends of the two filters, the outer walls of the branch pipes are round, the inner walls of the branch pipes are oval, and a plurality of watering holes are formed in the branch pipes. The water storage tank, the water supply pump, the filter, the regulating valve, the pressure sensor and the reflux valve are electrically connected with the control system. The filter can be automatically cleaned, the workload is reduced, the watering branch pipes can keep enough elasticity to support soil to prevent cutoff, the watering holes can be flushed under the condition of low pressure, and blockage is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheat irrigation, in particular to a wide underground porous watering device for wheat. Background Art

[0002] The global water crisis has prompted water conservancy scholars to continuously explore and research irrigation technologies that are more water-saving, energy-saving, material-saving and investment-saving. Underground watering technology is one of these technologies. By burying the watering pipe underground, water is directly poured onto the roots of wheat. Compared with flooding and drip irrigation on the ground, it can effectively prevent water evaporation. The underground watering method usually involves opening watering holes on the watering branch pipe buried underground, so that water can directly penetrate into the soil at the roots of wheat. The disadvantage is that it is easy to get clogged, so people use rubber pipes. When clogged, the pipe is pressurized to reach the expansion criticality, and the watering hole is also opened. The water will flush out the clogged fine sand, thereby clearing the watering hole. The thicker the wall of the watering branch pipe, the greater the pressure required. The irrigation area of ​​wheat is usually large, so higher power consumption is required. If the wall thickness is reduced, the pressure near the expansion point will be small, and the power consumption will be low. However, the thinner pipe will be cut off because it cannot withstand the pressure of the soil. For example, after stopping watering, the soil above the branch pipe will press down. If the pipe wall is thin and not elastic enough, the soil will flatten the pipe, and it will not be able to resume unobstructed water flow when watering again. At the same time, a filter is usually added to the main pipe at the water inlet end to filter out impurities in the water. The irrigation area of ​​wheat is usually large, and the filter needs to be cleaned frequently, which increases the workload of personnel. Summary of the invention

[0003] The utility model aims to provide a wide underground porous watering device for wheat to solve the problems existing in the prior art.

[0004] The utility model adopts the following technical scheme to solve the technical problems: a wide-width underground porous watering device for wheat, comprising a water storage tank, the water storage tank is connected to a water supply pump through a main pipe, the water supply pump is connected to two filters in parallel through the main pipe, the two filters are connected to a regulating valve in series through the main pipe, a plurality of branch pipes are connected in parallel at the end of the main pipe, an inlet and outlet valve is installed at the end of the branch pipe, pressure sensors are installed on the main pipes at the output end of the water supply pump, the output end of the regulating valve and the output ends of the two filters, a backflow valve is installed on the main pipes at the input ends of the two filters, the outer wall of the branch pipe is circular, the inner wall of the branch pipe is elliptical, a plurality of watering holes are arranged on the branch pipe, and the water storage tank, the water supply pump, the filter, the regulating valve, the pressure sensor, the backflow valve and the control system are electrically connected.

[0005] Furthermore, the branch pipe is buried underground, and the inlet and outlet valves are located above ground.

[0006] Furthermore, a drain valve is connected to the side wall of the water inlet end of the filter, and the water storage tank is electrically connected to the control system through the drain valve.

[0007] Furthermore, the branch pipes are elastic rubber pipes.

[0008] Furthermore, the axial center line of the elliptical inner wall of the branch pipe and the axial center line of the circular outer wall of the branch pipe are not on the same straight line, so that the wall thickness of one side of the branch pipe is smaller than the wall thickness of the other side.

[0009] Furthermore, the narrowest part of the branch pipe wall thickness is 0.7 times the widest part of the wall thickness, and the watering holes are evenly and linearly distributed on one side of the narrowest part of the branch pipe wall thickness.

[0010] Furthermore, the watering holes are evenly and linearly distributed on one side of the narrowest part of the branch pipe wall.

[0011] Furthermore, the water supply pump is a variable frequency pump.

[0012] Furthermore, the water tank is a water storage container with a liquid level gauge, and the water tank is electrically connected to the control system via the liquid level gauge provided therewith.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model can automatically clean the filter, reducing the workload, and the watering branch pipe can not only maintain sufficient elasticity to support the soil to prevent flow interruption, but also can flush the watering hole under low pressure conditions to prevent blockage.

[0015] 2. By setting up two filters for alternate use and backflushing the filters through pressure sensors, backflow valves, and drain valves, automatic cleaning of the filters is achieved without manual cleaning, thereby reducing the workload.

[0016] 3. By designing the branch pipe so that the radial axis of the inner wall and the outer wall are not in the same straight line, when clearing the watering hole, due to the uneven wall thickness of the branch pipe, the side with a narrower wall thickness will reach the expansion criticality first, causing the watering hole to expand, and the water flow with a higher pressure will flush out the blocked sand, thereby preventing blockage. It is not necessary to increase the water pressure to the extent that the side with a wider wall thickness also reaches the expansion criticality, but only to make the side with a narrower wall thickness reach the expansion criticality.

[0017] 4. When laying the branch pipe, the watering hole is usually facing downward. Compared with the circular inner wall, the elliptical inner wall of the branch pipe is thicker on both sides that bear the soil, and has sufficient elasticity to better withstand the pressure of the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the branch pipe of the utility model.

[0020] Among them: 1. Water storage tank; 2. Main pipe; 3. Water supply pump; 4. Filter; 5. Regulating valve; 6. Branch pipe; 7. Inlet and exhaust valve; 8. Pressure sensor; 9. Backflow valve; 10. Watering hole; 11. Drain valve. DETAILED DESCRIPTION

[0021] The utility model will now be further described in detail with reference to the accompanying drawings.

[0022] like Figure 1-2 As shown, a wide-width underground porous watering device for wheat comprises a water storage tank 1, the water storage tank 1 is connected to a water supply pump 3 through a main pipe 2, the water supply pump 3 is connected in parallel with two filters 4 through the main pipe 2, the two filters 4 are connected in series with a regulating valve 5 through the main pipe 2, a plurality of branch pipes 6 are connected in parallel at the end of the main pipe 2, an inlet and outlet valve 7 is installed at the end of the branch pipe 6, pressure sensors 8 are installed on the main pipes 2 at the output ends of the water supply pump 3, the output ends of the regulating valve 5, and the output ends of the two filters 4, a backflow valve 9 is installed on the main pipe 2 at the input ends of the two filters 4, the outer wall of the branch pipe 6 is circular, the inner wall of the branch pipe 6 is elliptical, a plurality of watering holes 10 are arranged on the branch pipe 6, and the water storage tank 1, the water supply pump 3, the filter 4, the regulating valve 5, the pressure sensor 8, the backflow valve 9 are electrically connected to the control system.

[0023] The control system is existing technology, including a data acquisition module, a controller, a communication module, a circuit breaker and other related modules. The data acquisition module and the communication module are used to transmit the detection signals of the pressure sensor 8 and the liquid level gauge in the water tank 1 to the controller. The controller is used to control the opening and closing or opening adjustment or frequency conversion adjustment of the water supply pump 3, the drain valve 11, the regulating valve 5, and the reverse flow valve 9. The circuit breaker is used to control the on and off of the power supply line.

[0024] The branch pipe 6 is buried underground, and the air inlet and outlet valve 7 is located above ground. By directly watering the wheat roots from underground, the evaporation of water is reduced, thereby saving water. The air inlet and outlet valve 7 is a prior art. At the beginning of watering, a large amount of air in the pipeline can be quickly discharged to avoid high pressure in the pipeline system and damage. Small bubbles generated during the water flow can be continuously discharged; when watering is stopped, the air inlet and outlet are opened to allow air to enter, avoiding negative pressure in the pipeline system and damage.

[0025] A drain valve 11 is connected to the side wall of the water inlet end of the filter 4 , and the water storage tank 1 is electrically connected to the control system through the drain valve 11 .

[0026] The branch pipe 6 is a rubber tube with elasticity. When the branch pipe 6 is blocked, the branch pipe 6 is pressurized to reach the expansion critical point, and the watering hole 10 is also opened, and the water flushes out the blocked fine sand, thereby clearing the watering hole 10.

[0027] The axial center line of the elliptical inner wall of the branch pipe 6 and the axial center line of the circular outer wall of the branch pipe 6 are not on the same straight line, so that the wall thickness of one side of the branch pipe 6 is smaller than the wall thickness of the other side.

[0028] The narrowest part of the branch pipe 6 is 0.7 times the widest part of the branch pipe 6 , and the watering holes 10 are evenly and linearly distributed on one side of the narrowest part of the branch pipe 6 .

[0029] The watering holes 10 are evenly and linearly distributed on one side of the branch pipe 6 where the wall thickness is the narrowest.

[0030] When the watering hole 10 is unblocked, the water pressure is increased by increasing the frequency of the water supply pump 3. Since the wall thickness of the branch pipe 6 is uneven, the side with a narrower wall thickness reaches the expansion criticality first, so that the watering hole 10 is expanded, and the high-pressure water flow flushes out the blocked sand particles, thereby preventing blockage. It is not necessary to increase the water pressure to the extent that the side with a wider wall thickness also reaches the expansion criticality, but only to make the side with a narrower wall thickness reach the expansion criticality.

[0031] The water supply pump 3 is a variable frequency pump. The water pressure is adjusted by changing the operating frequency of the water supply pump 3.

[0032] The water tank 1 is a water storage container with a liquid level gauge, and the water tank 1 is electrically connected to the control system through the liquid level gauge provided therewith.

[0033] The working principle of the utility model is:

[0034] When in use, the water in the water storage tank is pumped into the main pipe 2 through the water supply pump 3. At this time, the control system controls the backflow valve 9 in front of one of the filters 4 to be opened and the other to be closed. In this way, one filter 4 is used for filtering. The control system controls the regulating valve 5 to adjust the flow rate. After the water enters the branch pipe 6, it flows out from the watering hole 10 on the branch pipe 6 to water the roots of the wheat. When the filter 4 is blocked, the pressure sensor 8 at the output end of the water supply pump 3 detects the pressure increase. At this time, the control system controls the backflow valve 9 in front of the other filter 4 to be opened, and the backflow valve 9 in front of the blocked filter 4 and the corresponding drain valve 11 are closed. In this way, part of the water in the main pipe 2 is used to backwash the filter screen in the blocked filter 4, and the other part of the water enters the branch pipe 6 for watering. By controlling the frequency of the water supply pump 3 and the opening of the regulating valve 5, it is ensured that the pressure of the water entering the branch pipe 6 meets the watering requirements to avoid being affected by the backwash of the filter 4. After the backwashing is completed, the control system controls the backflow valve 9 in front of the blocked filter 4 and the corresponding drain valve 11 to be closed.

[0035] If the branch pipe 6 needs to be pressurized and unblocked, the control system controls the frequency of the water supply pump 3 to increase the water pressure. Since the wall thickness of the branch pipe 6 is uneven, the side with a narrower wall thickness reaches the expansion criticality first, so that the watering hole 10 is expanded, and the high-pressure water flow flushes out the blocked sand particles, thereby preventing blockage. It is not necessary to increase the water pressure to the extent that the side with a wider wall thickness also reaches the expansion criticality, but only to make the side with a narrower wall thickness reach the expansion criticality.

[0036] Compared with the prior art, one side of the branch pipe 6 is reinforced to make its wall thickness uneven. The wider part of the wall thickness can support the pressure of the soil. After watering is stopped, the soil will not flatten the branch pipe 6, thereby ensuring that it can remain unobstructed when watering again.

[0037] When the branch pipe 6 is laid, the watering hole 10 is usually facing downward. Compared with the circular inner wall, the elliptical inner wall of the branch pipe 6 has a wider wall thickness on both sides of the branch pipe 6 that bear the soil, and can better withstand the pressure of the soil.

[0038] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention.

[0039] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A wide underground porous watering device for wheat, characterized in that: The invention comprises a water storage tank, wherein the water storage tank is connected to a water supply pump through a main pipe, the water supply pump is connected to two filters in parallel through the main pipe, the two filters are connected to a regulating valve in series through the main pipe, a plurality of branch pipes are connected in parallel to the end of the main pipe, an inlet and outlet valve is installed at the end of the branch pipe, pressure sensors are installed on the main pipes at the output end of the water supply pump, the output end of the regulating valve and the output ends of the two filters, a backflow valve is installed on the main pipes at the input ends of the two filters, the cross section of the outer wall of the branch pipe is circular, the cross section of the inner wall of the branch pipe is elliptical, a plurality of watering holes are arranged on the branch pipe, and the water storage tank, the water supply pump, the filter, the regulating valve, the pressure sensor, the backflow valve and the control system are electrically connected.

2. The wide-width underground porous watering device for wheat according to claim 1, characterized in that: The branch pipe is buried underground, and the air inlet and outlet valves are located above ground.

3. The wide-width underground porous watering device for wheat according to claim 2, characterized in that: The branch pipe is an elastic rubber pipe.

4. The wide-width underground porous watering device for wheat according to claim 3, characterized in that: The axial center line of the elliptical inner wall of the branch pipe is not in the same straight line as the axial center line of the circular outer wall of the branch pipe, so that the wall thickness of one side of the branch pipe is smaller than that of the other side.

5. The wide-width underground porous watering device for wheat according to claim 4, characterized in that: The narrowest part of the branch pipe wall thickness is 0.7 times the widest part of the wall thickness, and the watering holes are evenly and linearly distributed on one side of the narrowest part of the branch pipe wall thickness.

6. The wide-width underground porous watering device for wheat according to claim 4, characterized in that: The watering holes are evenly and linearly distributed on one side of the narrowest part of the branch pipe wall.

7. The wide-width underground porous watering device for wheat according to claim 1, characterized in that: The water supply pump is a variable frequency pump.

8. The wide-width underground porous watering device for wheat according to claim 1, characterized in that: The water tank is a water storage container with a liquid level gauge, and the water tank is electrically connected to the control system through the liquid level gauge provided by the water tank.

9. The wide-width underground porous watering device for wheat according to claim 1, characterized in that: A drain valve is connected to the side wall of the water inlet end of the filter, and the water storage tank is electrically connected to the control system through the drain valve.

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