Small reservoir siphon irrigation and drainage pipeline structure

Abstract

Compared with the prior art, the small reservoir siphon irrigation and drainage pipeline structure disclosed by the invention has the following beneficial effects that during working, the first control valve is closed, the water adding pipe adds water into the connecting section, so that the water delivery section is filled with water at a certain height, then the water adding pipe is closed, the first control valve is opened, and water flow in the water delivery section flows out to form a siphon effect; due to the fact that pipelines are adopted in the water suction section, the water conveying section and the connecting section, leakage is avoided, the problem that water leaks when a water conveying hole is used is solved, and due to the fact that the multiple water suction pipes are arranged, the suction resistance can be reduced, and the pumping efficiency can be improved. Comprising a water sucking section, a water conveying section and a connecting section arranged between the water sucking section and the water conveying section, a bending section is arranged between the connecting section and the water sucking section in an upward bending mode, a water adding pipe is arranged on the connecting section and located on the side, close to the water conveying section, of the bending section, a first control valve is arranged at the lower end of the water conveying section, and a plurality of water sucking pipes with upward openings are arranged on the water sucking section.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation and drainage, and in particular to a pond siphon irrigation and drainage pipeline structure. Background Art

[0002] For pond irrigation in the southern mountainous areas, the commonly used method is to use flat and inclined pipe water tunnels for diversion irrigation. The water tunnel method often causes water leakage due to cracks in the hole wall, which seriously affects the irrigation efficiency and wastes water resources. Therefore, there is an urgent need for an irrigation and drainage structure suitable for pond irrigation in the southern mountainous areas. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a pond dam siphon irrigation and drainage pipeline structure for at least partially solving the technical problems existing in the prior art.

[0004] To achieve the above purpose, the technical solution of the present invention is: a pond siphon irrigation and drainage pipeline structure, comprising: A water absorption section, a water delivery section and a connecting section arranged between the water absorption section and the water delivery section, a bending section is arranged between the connecting section and the water absorption section and is bent upward and located on a side of the bending section close to the water delivery section, a water adding pipe is arranged on the connecting section, a first control valve is arranged at the lower end of the water delivery section, and a plurality of water absorption pipes with openings facing upward are arranged on the water absorption section.

[0005] Furthermore, a second control valve is provided on the bending section, and a third control valve is provided on the water supply pipe; a rigid pipe is provided on the water supply pipe between the third control valve and the connecting section, and the rigid pipe is connected to a buffer box.

[0006] Furthermore, the buffer box includes a rigid box body, the box body is provided with a first port and a second port connected to the inside of the box body, the rigid pipe is connected to the first port, the second port is connected to a suction pipe, and the box body and the connecting section are arranged at the same height.

[0007] Furthermore, the first port is arranged at the top of the box body, and the second port is provided with a first one-way valve, and the first one-way valve allows the flowing medium to flow into the interior of the box body through the second port.

[0008] Furthermore, a third port is provided at the bottom of the box body, and a second one-way valve is provided at the third port, and the second one-way valve allows the flow medium in the box body to flow out in one direction through the third port.

[0009] Furthermore, a water inlet is provided on the water delivery section, and the water inlet is connected with the third port through a connecting pipe, and the height of the water inlet is lower than the lower end of the suction pipe.

[0010] Furthermore, the upper end of the connecting pipe is connected to a second connecting section of the same height as the connecting section, the other end of the second connecting section is connected to a second suction section, the second suction section, the second connecting section and the connecting pipe constitute a siphon, the second connecting section is connected to the third port, and a fourth control valve is arranged between the second connecting section and the third port.

[0011] Furthermore, a check valve is provided on the connecting pipe.

[0012] Furthermore, the end of the second connecting section is bent upward to form a second bent section, and the other end of the second bent section is connected to the second suction pipe.

[0013] Furthermore, the first port is provided with a third one-way valve, and the third one-way valve allows the flowing medium in the box to flow out in one direction.

[0014] Compared with the prior art, the siphon irrigation and drainage pipeline structure of a pond and dam disclosed by the present invention has the following beneficial effects: when working, by closing the first control valve, adding water to the connecting section through a water adding pipe, a certain height of water is filled into the water delivery section, and then the water adding pipe is closed, the first control valve is opened, and the water in the water delivery section flows out, forming a siphon effect, and the water in the dam and pond is sucked through the dam for irrigation. Since the water absorption section, the water delivery section and the connecting section are all pipes, no leakage will occur, and the problem of water leakage when using the water delivery hole is solved. By setting a plurality of water absorption pipes, the suction resistance can be reduced and the pumping efficiency can be improved. The siphon irrigation and drainage pipeline structure of the pond and dam comprises: a water absorption section, a water delivery section and a connecting section arranged between the water absorption section and the water delivery section, a bending section is arranged between the connecting section and the water absorption section, and is located on the side of the bending section close to the water delivery section, a water addition pipe is arranged on the connecting section, a first control valve is arranged at the lower end of the water delivery section, and a plurality of water absorption pipes with openings facing upwards are arranged on the water absorption section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the pond siphon irrigation and drainage pipeline structure for this application Figure 1 .

[0016] Figure 2 This is the overall structure diagram of the pond siphon irrigation and drainage pipeline structure for this application Figure 1 .

[0017] Figure 3 This is the overall structure diagram of the pond siphon irrigation and drainage pipeline structure for this application Figure 2 .

[0018] Figure 4 This is the overall structure diagram of the pond siphon irrigation and drainage pipeline structure for this application Figure 3 .

[0019] Figure 5This is the overall structure diagram of the pond siphon irrigation and drainage pipeline structure for this application Figure 4 .

[0020] Figure 6 This is a structural schematic diagram of the buffer box in the siphon irrigation and drainage pipeline structure of the pond dam.

[0021] Figure 7 This is a schematic diagram of the internal structure of the buffer box in the siphon irrigation and drainage pipeline structure of the pond dam in this application. Figure 1 .

[0022] Figure 8 This is a schematic diagram of the internal structure of the buffer box in the siphon irrigation and drainage pipeline structure of the pond dam in this application. Figure 2 .

[0023] Fig. 9 for Figure 7 Shown is an enlarged structural schematic diagram of point A in the pond siphon irrigation and drainage pipeline structure provided in this application.

[0024] In the figure: 10, water suction section; 101, water suction pipe; 11, water delivery section; 110, water filling port; 111, connecting pipe; 1110, check valve; 1112, sixth control valve; 1101, rigid pipe; 112, second connecting section; 113, second suction section; 115, second bending section; 12, connecting section; 13, bending section; 2, water filling pipe; 21, third control valve; 22, rigid pipe; 23, fifth control valve; 3, first control valve; 4, second control valve; 5, buffer box; 51, box body; 510, first check valve; 511, first port; 5110, third check valve; 512, second port; 513 , the third port; 514, the second one-way valve; 515, the second rigid tube; 52, the suction tube; 53, the fourth control valve; 55, the discharge pipe; 56, the valve body; 561, the columnar cavity; 562, the piston cylinder; 563, the retaining spring; 564, the second piston; 565, the valve stem; 566, the connecting pipe; 567, the conical valve member; 568, the conical surface; 57, the second rigid tube; 571, the water inlet; 572, the fourth one-way valve; 573, the seventh control valve; 59, the connecting tube; 591, the filter hole; 592, the filter element; 593, the piston plate; 594, the compression spring; 596, the flow channel; 91, the water inlet pool; 9, the dam. DETAILED DESCRIPTION

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0026] Please refer to Figure 1 The technical solution of the present invention is: a pond siphon irrigation and drainage pipeline structure, comprising: A water absorption section 10, a water delivery section 11 and a connecting section 12 arranged between the water absorption section and the water delivery section, a bending section 13 is bent upward between the connecting section 12 and the water absorption section 10, and is located on the side of the bending section 13 close to the water delivery section 11, a water supply pipe 2 is arranged on the connecting section 12, a first control valve 3 is arranged at the lower end of the water delivery section 11, and a plurality of water absorption pipes 101 with openings facing upward are arranged on the water absorption section 10.

[0027] Specifically, in actual application, the dam pond is provided with a dam 9, and a water inlet pool 91 is provided at the edge of the dam pond near the dam 9, and water can accumulate in the water inlet pool. The lower end of the water absorption section 10 is provided in the water inlet pool 91, and the water absorption pipe 101 is provided at the lower end of the water absorption section. When working, by closing the first control valve 3, the water adding pipe 2 adds water to the connecting section 12, so that a certain height of water is filled into the water delivery section, and then the water adding pipe is closed, and the first control valve 3 is opened, and the water flow in the water delivery section 11 flows out, forming a siphon effect, and the water in the dam pond is sucked through the dam 9 for irrigation. Since the water absorption section 10, the water delivery section 11 and the connecting section 12 are all pipes, no leakage will occur, and the problem of water leakage when using the water delivery hole is solved. By setting a plurality of water absorption pipes 101, the suction resistance can be reduced and the pumping efficiency can be improved. By setting the mouth of the water absorption pipe 101 upward, it is conducive to discharging the bubbles mixed in the water upward, avoiding the inhalation of too many bubbles to affect the siphon effect.

[0028] Furthermore, when irrigation is stopped, the water supply can be stopped by closing the first control valve 3 .

[0029] Further, it can be understood that the water hammer effect will be formed in the water delivery section when the water flow is blocked, and the water hammer effect will impact the pipe wall. When the water flow is controlled by closing the first control valve 3, when the first control valve 3 leaks, it will continue to leak under the action of siphon, wasting water resources. As a preferred embodiment, reference Figure 1 , Figure 2 A second control valve 4 is provided on the bending section 13, and a third control valve 21 is provided on the water supply pipe 2; a rigid pipe 22 is provided on the water supply pipe 2 between the third control valve 21 and the connecting section 12, and the rigid pipe 22 is connected to a buffer tank 5.

[0030] Specifically, by setting the second control valve 4 in the bending section 13, when it is necessary to stop irrigation, the second control valve 4 is controlled to be closed. After closing, the water in the dam pond is prevented from continuing to enter the water absorption section 10, thereby achieving the effect of stopping pumping. After the second control valve is closed, the water flow in the water delivery section 11 will continue to flow under the action of inertia, thereby forming a negative water hammer effect in the connecting section 12. By setting the buffer box 5, the buffer box 5 can buffer the negative water hammer effect and reduce the damage of the negative water hammer effect to the pipeline.

[0031] Further, as a specific implementation method, the specific structure of the buffer box is: Figure 6-Figure 8 The buffer box 5 includes a rigid box body 51, and the box body 51 is provided with a first port 511 and a second port 512 connected to the inside of the box body. The rigid pipe 22 is connected to the first port 511, and the second port 512 is connected to a suction pipe 52. The box body 51 is arranged at the same height as the connecting section 12.

[0032] Specifically, the rigid box 51 is a box structure that can withstand a certain negative pressure without deformation. The box 51 is provided with a first port 511, which is connected to the middle position of the water supply pipe 2 through the rigid pipe 22, and the second port 512 is connected to the suction pipe 52, and the lower end of the suction pipe extends into the water inlet pool 91. Figure 1 , Figure 2 A third control valve 21 is provided on the water supply pipe. When water is added through the water supply pipe, the third control valve 21 is opened. After water is added, the third control valve is in a closed state. A fifth control valve 23 is provided on the rigid pipe 22. Before closing the second control valve 4, the fifth control valve 23 is opened first, and then the second control valve 4 is closed, so that a negative water hammer effect is generated at the connecting section 12, thereby transmitting the negative water hammer effect to the box body 51 through the rigid pipe 22, so that a negative pressure is generated in the box body. Under the action of the negative pressure, water can be sucked into the box body through the suction pipe 52. On the one hand, the water hammer effect can be alleviated by the suction water flow. After buffering the water hammer effect, the water flow rate in the water delivery section 11 slows down. At this time, the first control valve 3 can be closed, and the second control valve 4 and the fifth control valve 23 can be closed. At this time, the water in the water delivery section 11 can be retained in the water delivery section 11. Since the upper end of the water delivery section is also closed in this state, even if the first control valve leaks, the leakage rate will be greatly reduced, so that the water can be effectively retained in the water delivery section. When irrigation is carried out again after an interval of about 7 days, the first control valve and the second control valve can be directly opened, and the water retained in the water delivery section can be directly used for drainage.

[0033] Further, as a preferred embodiment, refer to Figure 6-Figure 9 The first port 511 is disposed at the top of the box body 51 , and the second port 512 is provided with a first one-way valve 510 . The first one-way valve 510 allows the flowing medium to flow into the interior of the box body 51 through the second port 512 .

[0034] Specifically, through this arrangement, when water is pumped using the negative water hammer effect, the water flow can enter the box through the first one-way valve. When the pumping stops, the first one-way valve 510 can be used to prevent the water from flowing out of the second port. Therefore, the water can be stored inside the box, and the box is used to store the pumped water flow. Since the box is set at the top of the dam, the water flow in the box can be directly used for irrigation, and the water in the box can be added to the water transfer section for siphon suction, thereby making full use of the water hammer effect and saving energy.

[0035] Further, as a specific implementation method, refer to Figure 7 A third port 513 is disposed at the bottom of the box body 51 , and a second one-way valve 514 is disposed at the third port 513 . The second one-way valve 514 allows the flowing medium in the box body to flow out in one direction through the third port 513 .

[0036] Specifically, the second one-way valve includes a valve plate, the upper end of the valve plate is rotatably arranged by a pin shaft, and the valve plate can be in a vertical state under the action of its own gravity to block the third port 513. By setting the third port and setting the second one-way valve 514 at the third port 513, when there is a negative pressure in the box body 51, the second one-way valve 514 can prevent the external flow medium from entering the box body through the third port 513 to avoid pressure relief, and the negative pressure is used to provide suction force for the suction pipe to ensure the water pumping amount. When the negative pressure inside the box body is balanced with the outside, the water in the box body can push the valve plate to flow out from the third port 513, thereby facilitating the use of the water in the box body.

[0037] Further, as a specific implementation method, refer to Figure 2-Figure 6 The water delivery section 11 is provided with a water inlet 110 , and the water inlet 110 is connected to the third port 513 through a connecting pipe 111 . The height of the water inlet 110 is lower than the lower end of the suction pipe 52 .

[0038] Specifically, the water inlet 110 is connected to a rigid tube 1101, the connecting tube 111 is connected to the rigid tube 1101, the third port 513 is connected to a second rigid tube 515, a fourth control valve 53 is provided on the second rigid tube, the second rigid tube 515 is connected to the connecting tube 111, and by providing the fourth control valve 53, water can be stored inside the box for a long time by closing the fourth control valve. Similarly, a control valve (not shown in the figure) can also be provided on the suction tube 52. When irrigation is not performed for a long time, the suction tube is closed by the control valve. When irrigation is needed again, the fourth control valve 53 is opened to discharge the water inside the box through the connecting tube 111 to the water delivery section 11. At this time, the first control valve 3 is closed, and the water in the connecting tube is collected in the water delivery section as drainage water for the siphon.

[0039] Further, as a preferred embodiment, refer to Figure 2-Figure 7 The upper end of the connecting pipe 111 is connected to a second connecting section 112 of the same height as the connecting section 12, the other end of the second connecting section 112 is connected to a second suction section 113, the second suction section, the second connecting section and the connecting pipe constitute a siphon, the second connecting section 112 is connected to the third port 513, and a fourth control valve 53 is arranged between the second connecting section 112 and the third port 513.

[0040] Specifically, the middle position of the second connecting section 112 is connected to the second rigid tube 515, and the two ends of the second connecting section are connected to the second suction section 113 and the connecting tube 111. During use, a sixth control valve 1112 is provided at the connection position between the rigid tube 1101 and the connecting tube 111. Before the water in the box is introduced into the connecting tube 111, the sixth control valve 1112 is closed first, and then the water is introduced into the connecting tube 111.

[0041] Furthermore, a check valve 1110 is provided on the connecting pipe 111. When the check valve 1110 is provided, the cross-sectional area of ​​the connecting pipe is set to be small to ensure that the water stored in the box can fill the connecting pipe, and to ensure that the lower end of the connecting pipe 111 is at a height above the water inlet 110. After the fourth control valve 53 is opened to allow the water in the box to flow into the connecting pipe and fill the connecting pipe, the fourth control valve 53 is closed and the sixth control valve 1112 is opened. At this time, the water in the connecting pipe 111 will flow into the water delivery section 11 and can flow into the second suction section 113 and the second connecting section 111. A siphon effect is formed in 12 and the connecting pipe 111, and the lower end of the second suction section 113 extends into the water inlet pool 91, so that water can be continuously delivered to the water delivery section 11 until the liquid level of the water stored in the water delivery section is flush with the liquid level in the water collection pool. Through this arrangement, water can be absorbed and stored in the box by closing the second control valve 4. Then, during the next irrigation, the water stored in the box generates a siphon effect to add water to the water delivery section 11, thereby eliminating the need to consume power to pump water to add water to the water delivery section, which can effectively save electric energy.

[0042] Further, as a specific implementation method, refer to Figure 1 , where the distance from the lower end of the water delivery section 1 to the liquid level in the water collecting tank 91 is h3, the distance from the lower end of the water absorption section 10 to the liquid level is h2, and the distance from the liquid level in the water collecting tank to the bending section 13 is h1, then h3 is greater than h1+h2.

[0043] Furthermore, the end of the second connecting section 112 is bent upward to form a second bent section 115 , and the other end of the second bent section is connected to the second suction pipe.

[0044] As a preferred embodiment, refer to Figure 2A second bending section is provided at the end of the second connecting section 112, so that when the water in the box body 51 flows out into the second connecting section, the second bending section 115 can prevent the water from flowing into the second suction section 113, thereby improving the utilization rate of the water in the box body.

[0045] Further, as a preferred embodiment, refer to Figure 7 , the first port 511 is provided with a third one-way valve 5110, and the third one-way valve allows the flow medium in the box to flow out in one direction. Specifically, by providing the third one-way valve 5110, when the second control valve 4 is closed and negative pressure is generated in the connecting section 12 under the water hammer effect, the third one-way valve 5110 opens, thereby transmitting the negative pressure to the box 51, so that negative pressure is formed in the box. After the water in the connecting section 12 and the water delivery section 11 flows out, the air pressure in the connecting section returns to atmospheric pressure. At this time, the air pressure in the box is lower than or equal to the air pressure in the connecting section 12. At this time, the third one-way valve 5110 is closed, which can prevent external airflow from entering the box 51, ensure the negative pressure in the box, and thus ensure the flow rate of water sucked by the box under the action of negative pressure.

[0046] Further, as a specific implementation method, refer to Figure 7-Figure 9 The specific structure of the box body 51 is as follows: a connecting cylinder 59 is arranged on the bottom surface of the inner part of the box body, a flow channel 596 is arranged at the bottom of the connecting cylinder 59, a valve body 56 is arranged at the flow channel 596, the upper end of the connecting cylinder is threadedly connected to the end cover, a limiting step is arranged in the middle area, a piston plate 593 is arranged on the guide above the limiting step, a filter hole 591 is arranged on the side wall of the connecting cylinder above the limiting step, a filter element 592 is arranged on the periphery of the filter hole, a compression spring 594 is arranged between the end cover and the piston, a second port 512 is arranged on the side wall of the lower end of the connecting cylinder 59, and is located below the limiting step. The valve body 56 includes a columnar cavity 561 communicated with the flow channel 596, and a valve body 56 is arranged on the side wall of the lower end of the connecting cylinder 59. The discharge pipe 55 is arranged on one side of the columnar cavity 561, and the lower end of the flow channel 596 is provided with a conical surface 568. The lower end guide of the columnar cavity 561 is provided with a valve stem 565, and the upper end of the valve stem is provided with a conical valve member 567 adapted to the conical surface 568. The lower end of the valve stem is provided with a second piston 564, and the outer side wall of the columnar cavity 561 is detachably connected to the piston cylinder 562, the second piston 564 cooperates with the piston cylinder 562, and the lower end of the piston cylinder is provided with a breathable channel, and a retaining spring 563 is provided between the lower end of the piston cylinder and the second piston. The area of ​​the piston cylinder 562 above the second piston is connected to the inside of the connecting cylinder 59 through a connecting tube 566.

[0047] refer to Figure 8 , Fig. 9 When the air pressure in the box is equal to the atmospheric pressure, the state in the connecting tube 59 is as follows: Figure 7 , Figure 8As shown, when negative pressure is generated in the box body 51, a pressure difference can be generated on both sides of the piston plate 593. Under the action of the pressure difference, the piston plate presses the compression spring 594 upward to move, so that negative pressure is generated under the connecting cylinder, thereby providing suction force to the suction pipe 52, sucking external water into the connecting cylinder 59. At this time, the two sides of the second piston are also subject to the air pressure difference. Under the action of the air pressure difference and the elastic force of the second compression spring, the control valve is in Fig. 9 The piston plate 593 is pushed downward by the elastic force of the compression spring 594 to block the filter hole 591 and stop pumping water into the box body. With this arrangement, the dirt sucked into the connecting tube by the suction pipe 52 can be filtered and retained in the connecting tube 59, which is convenient for subsequent sewage treatment.

[0048] Furthermore, the middle area of ​​the rigid tube 1101 is connected to the second rigid tube 57, and the connecting tube 59 is also provided with a water inlet 571 on the side wall below the limit step. The second rigid tube is provided with a seventh control valve 573, and the seventh control valve 573 is in a closed state. The water inlet 571 is provided with a fourth one-way valve 572, and the fourth one-way valve allows the flow medium to flow into the connecting tube 59 in one direction. The water inlet 571 is connected to the second rigid tube 57. Through this setting, after a certain period of irrigation through the pipeline structure provided by the present application, by closing the first control valve 3 and opening the seventh control valve 573, a water hammer effect can be generated in the water delivery section 11, and the water hammer effect can be transmitted through the second rigid tube 57. To the connecting cylinder 59, the air pressure in the connecting cylinder is increased, and at the same time, the piston plate 593 is pushed upward to squeeze the compression spring 594 to buffer the water hammer effect. After the piston moves upward and leaks out of the filter hole 591, the pressure inside the connecting cylinder 59 is released to enter the box body 51, and at the same time, a pressure difference is generated on both sides of the second piston. Under the action of the pressure difference, the second piston can be pushed to squeeze the compression spring 563 to move, thereby pulling the conical valve member 567 downward to open the control valve. At this time, the dirt retained in the connecting cylinder 59 can be discharged from the discharge pipe 55 to achieve the purpose of sewage discharge, releasing the pressure in the connecting cylinder, thereby further achieving the purpose of buffering the water hammer effect. After the pressure is released, the control valve returns to its initial position under the elastic force of the compression spring.

[0049] Specifically, the irrigation method of the pond dam siphon irrigation and drainage pipeline structure provided in this application is: Step 1: close the first control valve 3, open the second control valve 4 and the third control valve 21, close the fourth control valve 53, the fifth control valve 23, the sixth control valve 1112 and the seventh control valve 573, and add water to the water delivery section 11 through the water adding pipe 2, so that the water level in the water delivery section 11 is greater than h1+h2; Step 2: close the third control valve 21, open the first control valve 3, and let the water in the water delivery section 11 flow out to form a siphon effect in the water absorption section 10, the connection section 12 and the water delivery section 11, so as to pump the water in the water inlet pool 91 for irrigation; Step 3: When irrigation is finished, the fifth control valve 23 is first opened, and then the second control valve 4 is closed, so that a negative water hammer effect is generated in the connection section downstream of the second control valve 4. Under the negative pressure generated by the negative water hammer, negative pressure is generated in the box body, water is pumped into the box body by the negative pressure, and the negative water hammer is buffered, and the pumped water is stored in the box body; Step 4: When irrigation is to be carried out next time, the first control valve is closed, the second control valve 4 and the fourth control valve 53 are opened, and the fifth control valve 23 is closed, so that the water in the box 51 flows into the connecting pipe 111 under the action of gravity until the connecting pipe 111 is filled; Step 5: Close the fourth control valve 53 and open the sixth control valve 1112. The water 111 in the connecting pipe flows into the water delivery section 11 under the action of gravity, and forms a siphon effect in the second suction section 113, the second connecting section 112 and the connecting pipe 111, thereby sucking the water in the water inlet pool 91 into the water delivery section 111 through the siphon effect until the liquid level in the water delivery section is equal to the liquid level in the water inlet pool. Step 6: close the sixth control valve 1112, open the second control valve 4, and the water in the water delivery section flows out to form a siphon effect for irrigation; Step 7. Repeat steps 3 to 6.

[0050] Further, it should be noted that in step six, during the irrigation process, by opening the seventh control valve 573 and then closing the first control valve 3 for 10 seconds to 20 seconds, a positive water hammer occurs in the water delivery section, and the inside of the box 51 is cleaned by the positive water hammer.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. The siphon irrigation and drainage pipeline structure of the pond dam is characterized by: include: A water absorption section (10), a water delivery section (11), and a connecting section (12) arranged between the water absorption section and the water delivery section; a bent section (13) is arranged between the connecting section (12) and the water absorption section (10) and is bent upwards and is located on a side of the bent section (13) close to the water delivery section (11); a water supply pipe (2) is arranged on the connecting section (12); a first control valve (3) is arranged at the lower end of the water delivery section (11); and a plurality of water absorption pipes (101) with openings facing upwards are arranged on the water absorption section (10).

2. The pond dam siphon irrigation and drainage pipeline structure according to claim 1 is characterized in that: The bending section (13) is provided with a second control valve (4), and the water supply pipe (2) is provided with a third control valve (21); between the third control valve (21) and the connecting section (12), the water supply pipe (2) is provided with a rigid pipe (22), and the rigid pipe (22) is connected to a buffer box (5).

3. The pond dam siphon irrigation and drainage pipeline structure according to claim 2 is characterized in that: The buffer box (5) comprises a rigid box body (51), the box body (51) being provided with a first port (511) and a second port (512) connected to the interior of the box body, the rigid pipe (22) being connected to the first port (511), the second port (512) being connected to a suction pipe (52), and the box body (51) and the connecting section (12) being arranged at the same height.

4. The pond dam siphon irrigation and drainage pipeline structure according to claim 3 is characterized in that: The first port (511) is arranged at the top of the box body (51), and the second port (512) is provided with a first one-way valve (510), and the first one-way valve (510) allows the flowing medium to flow into the interior of the box body (51) through the second port (512).

5. The pond dam siphon irrigation and drainage pipeline structure according to claim 3 is characterized in that: The bottom of the box body (51) is provided with a third port (513), and the third port (513) is provided with a second one-way valve (514). The second one-way valve (514) allows the flowing medium in the box body to flow out in one direction through the third port (513).

6. The pond dam siphon irrigation and drainage pipeline structure according to claim 5, characterized in that: The water delivery section (11) is provided with a water inlet (110), the water inlet (110) being connected to the third port (513) via a connecting pipe (111), and the height of the water inlet (110) being lower than the lower end of the suction pipe (52).

7. The pond dam siphon irrigation and drainage pipeline structure according to claim 6, characterized in that: The upper end of the connecting pipe (111) is connected to a second connecting section (112) of the same height as the connecting section (12); the other end of the second connecting section (112) is connected to a second suction section (113); the second suction pipe, the second connecting section and the connecting pipe form a siphon; the second connecting section (112) is connected to a third port (513); a fourth control valve (53) is provided between the second connecting section (112) and the third port (513).

8. The pond dam siphon irrigation and drainage pipeline structure according to claim 7, characterized in that: The connecting pipe (111) is provided with a check valve (1110).

9. The pond dam siphon irrigation and drainage pipeline structure according to claim 8, characterized in that: The end of the second connecting section (112) is bent upward to form a second bent section (115), and the other end of the second bent section is connected to the second suction pipe.

10. The pond dam siphon irrigation and drainage pipeline structure according to claim 4, characterized in that: The first port (511) is provided with a third one-way valve (5110), and the third one-way valve allows the flowing medium in the box to flow out in one direction.

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