Drip irrigation equipment for crop cultivation

Abstract

The invention belongs to the technical field of drip irrigation equipment, and particularly relates to drip irrigation equipment for crop cultivation. Comprising a water tank and two filters, each filter is provided with a water inlet, a water outlet, a rotary joint and a backwashing outlet, the backwashing outlets of the filters are located above the water tank, a submersible pump is installed in the water tank and connected with a self-suction type gas-liquid mixing pump through a pipeline, and the submersible pump is connected with the water inlets of the two filters through pipelines; the self-suction type gas-liquid mixing pump is connected with rotary joints of the two filters through pipelines, water outlets of the two filters are communicated with a drip irrigation main pipe through pipelines, the drip irrigation main pipe is communicated with a plurality of drip irrigation branch pipes, and a plurality of drip irrigation heads are installed on the drip irrigation branch pipes. The filter screen is subjected to backwashing through high-pressure water, and the filter screen is brushed through the brush, so that the water consumption during backwashing is reduced, and the backwashing effect and the backwashing efficiency are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drip irrigation equipment, and in particular relates to a drip irrigation equipment for cultivating crops. Background Art

[0002] Drip irrigation technology is increasingly used in crop cultivation due to its advantages of water saving and strong terrain adaptability. At present, crop cultivation, especially in water-scarce areas, usually uses water storage devices to collect irrigation water, but the collected water contains impurities, so it needs to be filtered with a filter. When the filter screen is blocked, it needs to be backwashed. The current backwashing filter backwashing principle is to reversely flush by changing the direction of the water flow, but the flushing effect is not good. The reason is that the water quality of the collected irrigation water is poor, and it is easy to form scale on the filter screen, and there are also organisms attached, which requires sufficient water pressure to clean it. If the pump pressure is increased, not only will the power consumption be large, but also the flushing water will be wasted. Summary of the invention

[0003] The purpose of the present invention is to provide a drip irrigation device for crop cultivation to solve the problems existing in the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A drip irrigation device for cultivating crops comprises a water pool and two filters. The filters are provided with a water inlet, a water outlet, a rotary joint and a backwash outlet. The backwash outlet of the filter is located above the water pool. A submersible pump is installed in the water pool and is connected to a self-priming gas-liquid mixing pump through a pipeline. The submersible pump is connected to the water inlets of the two filters through a pipeline. The self-priming gas-liquid mixing pump is connected to the rotary joints of the two filters through a pipeline. The water outlets of the two filters are connected to a drip irrigation main pipe through a pipeline. The drip irrigation main pipe is connected to a plurality of drip irrigation branches, and a plurality of drip irrigation heads are installed on the drip irrigation branches.

[0006] Furthermore, two partitions are provided in the water pool, the height of the partitions is lower than the upper edge of the water pool, and the two partitions divide the water pool into a first sedimentation chamber, a second sedimentation chamber, and a clean water chamber. The backwash outlets of the two filters are located above the first sedimentation chamber, the submersible pump is located in the clean water chamber, and the liquid input end of the self-priming gas-liquid mixing pump is inserted into the clean water chamber through a pipe.

[0007] Furthermore, the filter is cylindrical, with heads bolted at both ends, the water outlet is located on the head at the upper end of the filter, the water inlet and backwash outlet are located on the head at the lower end of the filter, and valves are installed on the water inlet, water outlet, rotary joint and backwash outlet.

[0008] Furthermore, an annular retaining ring is welded in the middle position of the filter, a filter screen is bolted on the retaining ring, an upper outlet is opened on the side wall of the filter above the filter screen, a valve is installed on the upper outlet, and a center pipe is rotatably connected to the center position of the head at the upper end of the filter. The bottom end of the center pipe passes through the filter screen and is rotatably connected to the center position of the filter screen.

[0009] Furthermore, the center tube is in the shape of a circular tube, with the top of the center tube open and the bottom closed, the rotating joint is installed at the top of the center tube, and the lower part of the center tube is provided with annular upper grooves and lower grooves from top to bottom, the filter is located between the upper groove and the lower groove, two semicircular upper connecting parts are clamped in the upper groove, and two semicircular lower connecting parts are clamped in the lower groove, two water pipes and two brushes are symmetrically bolted on the upper connecting part, a number of flat-mouth nozzles are installed on the water pipe, and two brushes are bolted on the lower connecting part.

[0010] Furthermore, one end of the water spray pipe is arc-shaped and open, and the other end of the water spray pipe is closed. Two symmetrical through holes are opened at the upper groove position of the central tube, and a through hole is opened on the upper connecting piece. The open ends of the two water spray pipes and the through holes of the two upper connecting pieces are respectively connected to the two through holes on the upper groove.

[0011] Furthermore, the water outlet of the flat-mouth nozzle is flat-mouthed, and at least one of the plurality of flat-mouth nozzles on the water spray pipe is installed tilted downward, and the water outlets of the other flat-mouth nozzles are vertically downward.

[0012] Furthermore, the bristle ends of the brushes on the upper connecting member and the lower connecting member both abut against the filter screen, and one end of the brush is arc-shaped. The brush on the upper connecting member is bolted to the joint of the two upper connecting members through one arc-shaped end, and the brush on the lower connecting member is bolted to the joint of the two lower connecting members through one arc-shaped end.

[0013] The present invention has the following beneficial effects:

[0014] 1. The present invention backwashes the filter screen by high-pressure water and brushes the filter screen by a brush, thereby reducing the amount of water used during backwashing and improving the backwashing effect and efficiency.

[0015] 2. When backwashing the filter, use a self-priming gas-liquid mixing pump to supply water. The addition of air enhances the impact of the water flow and improves the cleaning efficiency, which is especially suitable for impurities with strong adhesion.

[0016] 3. The central tube is rotatably installed on the filter and the filter screen, and at least one of the flat nozzles is installed tilted, so that a driving force is generated during backwashing to drive the central tube to rotate, thereby flushing different parts of the filter screen, without the need to use an additional drive device to drive the rotation of the central tube.

[0017] 4. The water spray pipe and brush are both detachable for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the filter structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal cross-sectional structure of the filter of the present invention.

[0021] Figure 4 It is a schematic diagram of the connection structure of the central tube, the water spray pipe and the brush of the present invention.

[0022] Figure 5 The present invention Figure 3 Enlarged structural diagram at A in the middle.

[0023] Figure 6 The present invention Figure 3 Enlarged structural diagram at B in the middle.

[0024] Among them: 1. water tank; 2. filter; 3. water inlet; 4. water outlet; 5. swivel joint; 6. backwash outlet; 7. submersible pump; 8. self-priming gas-liquid mixing pump; 9. drip irrigation main pipe; 10. drip irrigation branch pipe; 11. drip irrigation head; 12. partition; 13. first sedimentation chamber; 14. second sedimentation chamber; 15. clean water chamber; 16. head; 17. retaining ring; 18. filter screen; 19. center pipe; 20. upper groove; 21. lower groove; 22. upper connecting piece; 23. lower connecting piece; 24. water spray pipe; 25. brush; 26. flat nozzle; 27. through hole; 28. upper outlet. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] like Figure 1-6 As shown, a drip irrigation device for crop cultivation includes a water pool 1 and two filters 2. The filters 2 are provided with a water inlet 3, a water outlet 4, a rotary joint 5, and a backwash outlet 6. The backwash outlet 6 of the filter 2 is located above the water pool 1. A submersible pump 7 is installed in the water pool 1 and is connected to a self-priming gas-liquid mixing pump 8 through a pipeline. The submersible pump 7 is connected to the water inlets 3 of the two filters 2 through a pipeline. The self-priming gas-liquid mixing pump 8 is connected to the rotary joints 5 of the two filters 2 through a pipeline. The water outlets 4 of the two filters 2 are connected to a drip irrigation main pipe 9 through a pipeline. The drip irrigation main pipe 9 is connected to a plurality of drip irrigation branches 10, and a plurality of drip irrigation heads 11 are installed on the drip irrigation branches 10.

[0027] Two partitions 12 are provided in the water pool 1. The height of the partitions 12 is lower than the upper edge of the water pool 1. The two partitions 12 divide the water pool 1 into a first sedimentation chamber 13, a second sedimentation chamber 14, and a clean water chamber 15. The backwash outlets 6 of the two filters 2 are located above the first sedimentation chamber 13, the submersible pump 7 is located in the clean water chamber 15, and the liquid input end of the self-priming gas-liquid mixing pump 8 is inserted into the clean water chamber 15 through a pipeline.

[0028] The filter 2 is cylindrical, and a head 16 is bolted at both ends of the filter 2. The water outlet 4 is located on the head 16 at the upper end of the filter 2, and the water inlet 3 and the backwash outlet 6 are located on the head 16 at the lower end of the filter 2. Valves are installed on the water inlet 3, the water outlet 4, the rotary joint 5, and the backwash outlet 6.

[0029] An annular retaining ring 17 is welded in the middle of the filter 2, and a filter screen 18 is bolted on the retaining ring 17. The filter screen 18 is used to filter impurities in the irrigation water. An upper discharge port 28 is opened on the side wall of the filter 2 above the filter screen 18, and a valve is installed on the upper discharge port 28. The upper discharge port 28 is used to discharge the flushing water above the filter screen 18. The central position of the head 16 at the upper end of the filter 2 is rotatably connected to a central pipe 19. The bottom end of the central pipe 19 passes through the filter screen 18 and is rotatably connected to the central position of the filter screen 18. The central pipe 19 is used for backwashing water.

[0030] The central tube 19 is in the shape of a circular tube, with an open top and a closed bottom. The rotary joint 5 is installed at the top of the central tube 19. The rotary joint 5 is a commonly used pipe fitting, one end of which can be rotated and the other end is fixed, so as to rotate and supply water. The lower part of the central tube 19 is provided with an annular upper groove 20 and an upper connecting piece 2221 from top to bottom. The filter screen 18 is located between the upper groove 20 and the upper connecting piece 2221. Two semicircular upper connecting pieces are clamped in the upper groove 20, and two semicircular lower connecting pieces 23 are clamped in the upper connecting piece 2221. Two water spray pipes 24 and two brushes 25 are symmetrically bolted on the upper connecting piece. Several flat nozzles 26 are installed on the water spray pipe 24. The high-pressure water sprayed by the flat nozzles 26 flushes the filter screen 18. Two brushes 25 are bolted on the lower connecting piece 23. There are brushes 25 on the upper and lower surfaces of the filter screen 18 to brush off the pests.

[0031] One end of the water spray pipe 24 is arc-shaped and open, and the other end of the water spray pipe 24 is closed. Two symmetrical through holes 27 are opened at the upper groove 20 of the central tube 19, and a through hole 27 is opened on the upper connecting piece. The open ends of the two water spray pipes 24 and the through holes 27 of the two upper connecting pieces are respectively connected with the two through holes 27 on the upper groove 20. Backwash water enters the central tube 19 from the rotary joint 5, and then enters the water spray pipe 24 through the through hole 27, and finally sprays to the filter screen 18 through the flat nozzle 26, thereby washing.

[0032] The water outlet of the flat nozzle 26 is flat-mouthed, and at least one of the plurality of flat nozzles 26 on the water spray pipe 24 is installed tilted downward, and the water outlets of the other flat nozzles 26 are vertically downward. The tilted flat nozzle 26 can generate a driving force when spraying water, so that the central tube 19 rotates, thereby washing different parts of the filter 18.

[0033] The bristle ends of the brushes 25 on the upper and lower connecting members 23 are both against the filter screen 18, one end of the brush 25 is in an arc shape, the brush 25 on the upper connecting member is bolted to the joint of the two upper connecting members through one end of the arc shape, and the brush 25 on the lower connecting member 23 is bolted to the joint of the two lower connecting members 23 through one end of the arc shape. The brush 25 scrubs the upper and lower surfaces of the filter screen 18 to scrub off the attached impurities such as the growth organisms.

[0034] The working principle of the present invention is:

[0035] The collected irrigation water enters the pool 1 during use, and finally flows into the clean water chamber 15 after sedimentation in the first sedimentation chamber 13 and the second sedimentation chamber 14. The submersible pump 7 draws the clean water in the clean water chamber 15 into any one of the two filters 2. The two filters 2 are used alternately, one as a backup and the other as a backup. The clean water enters the drip irrigation main pipe 9 after being filtered by the filter screen 18 in the filter 2, and is discharged from the drip irrigation head 11 of the drip irrigation branch pipe 10 to drip irrigate the crops.

[0036] When the filter 2 in operation is blocked, the valve is switched to another filter 2 for operation, and the blocked filter 2 starts backwashing operation. During backwashing, the self-priming gas-liquid mixing pump 8 is turned on, and clean water enters the central tube 19 through the rotary joint 5, and then enters the water spray pipe 24 through the through hole 27, and finally sprays to the filter 18 through the flat nozzle 26, thereby flushing. The inclined flat nozzle 26 can generate a driving force when spraying water, so that the central tube 19 rotates, thereby flushing different parts of the filter 18. Since the self-priming gas-liquid mixing pump 8 can mix air into the clean water, the addition of air enhances the impact of the water flow and improves the cleaning efficiency, which is particularly suitable for impurities with strong adhesion. During the flushing process, impurities such as organisms flushed and washed off above the filter 18 cannot pass through the filter 18, and are discharged from the upper discharge port 28 into the first sedimentation chamber 13 with the water flow, and impurities flushed and washed off below the filter 18 are discharged from the backwash outlet 6 into the first sedimentation chamber 13 with the water flow.

[0037] 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 should all fall within the scope of protection of the present invention.

[0038] The techniques, shapes, and structural parts not described in detail in the present invention are all well-known techniques.

Claims

1. A drip irrigation device for crop cultivation, characterized in that: The utility model comprises a water pool and two filters. The filters are provided with a water inlet, a water outlet, a swivel joint and a backwash outlet. The backwash outlet of the filter is located above the water pool. A submersible pump is installed in the water pool and is connected to a self-priming gas-liquid mixing pump through a pipeline. The submersible pump is connected to the water inlets of the two filters through a pipeline. The self-priming gas-liquid mixing pump is connected to the swivel joints of the two filters through a pipeline. The water outlets of the two filters are connected to a drip irrigation main pipe through a pipeline. The drip irrigation main pipe is connected to a plurality of drip irrigation branches, and a plurality of drip irrigation heads are installed on the drip irrigation branches.

2. The drip irrigation equipment for crop cultivation according to claim 1, characterized in that: Two partitions are arranged in the water pool, and the height of the partitions is lower than the upper edge of the water pool. The two partitions divide the water pool into a first sedimentation chamber, a second sedimentation chamber, and a clean water chamber. The backwash outlets of the two filters are located above the first sedimentation chamber, the submersible pump is located in the clean water chamber, and the liquid input end of the self-priming gas-liquid mixing pump is inserted into the clean water chamber through a pipeline.

3. The drip irrigation equipment for crop cultivation according to claim 1, characterized in that: The filter is cylindrical, with heads bolted at both ends, the water outlet is located on the head at the upper end of the filter, the water inlet and backwash outlet are located on the head at the lower end of the filter, and valves are installed on the water inlet, water outlet, rotary joint and backwash outlet.

4. The drip irrigation equipment for crop cultivation according to claim 3, characterized in that: An annular retaining ring is welded in the middle position of the filter, a filter screen is bolted on the retaining ring, an upper discharge port is opened on the side wall of the filter above the filter screen, a valve is installed on the upper discharge port, a center pipe is rotatably connected to the center position of the head at the upper end of the filter, and the bottom end of the center pipe penetrates the filter screen and is rotatably connected to the center position of the filter screen.

5. The drip irrigation equipment for crop cultivation according to claim 4, characterized in that: The center tube is in the shape of a circular tube, with an open top and a closed bottom. The rotary joint is installed at the top of the center tube. The lower part of the center tube is provided with an annular upper groove and a lower groove from top to bottom. The filter is located between the upper groove and the lower groove. Two semicircular upper connecting pieces are clamped in the upper groove, and two semicircular lower connecting pieces are clamped in the lower groove. Two water spray pipes and two brushes are symmetrically bolted on the upper connecting piece. A number of flat nozzles are installed on the water spray pipe, and two brushes are bolted on the lower connecting piece.

6. The drip irrigation equipment for crop cultivation according to claim 5, characterized in that: One end of the water spray pipe is arc-shaped and open, and the other end of the water spray pipe is closed. Two symmetrical through holes are opened at the upper groove position of the central tube, and a through hole is opened on the upper connecting piece. The open ends of the two water spray pipes and the through holes of the two upper connecting pieces are respectively connected to the two through holes on the upper groove.

7. The drip irrigation equipment for crop cultivation according to claim 5, characterized in that: The water outlet end of the flat-mouth nozzle is in a flat-mouth shape. Among the plurality of flat-mouth nozzles on the water spray pipe, at least one flat-mouth nozzle is installed obliquely downward, and the water outlet ends of the other flat-mouth nozzles are vertically downward.

8. The drip irrigation equipment for crop cultivation according to claim 5, characterized in that: The bristle ends of the brushes on the upper connecting piece and the lower connecting piece both abut the filter screen, one end of the brush is arc-shaped, the brush on the upper connecting piece is bolted to the butt joint of the two upper connecting pieces through one arc-shaped end, and the brush on the lower connecting piece is bolted to the butt joint of the two lower connecting pieces through one arc-shaped end.

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