Anti-backflow device for drainage port of irrigation and water conservancy
By adopting an "S"-shaped structure and float device in the farmland drainage system, the problems of backflow and blockage in the farmland drainage system have been solved, achieving backflow prevention and efficient drainage, and ensuring the healthy growth of farmland.
Patent Information
- Application Number
- CN202423277626.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional farmland drainage systems are prone to backflow and poor drainage under extreme weather conditions, leading to farmland pollution and crop root blockage, which affects the healthy growth of farmland.
The system uses drainage pipes, tee fittings, and connecting pipes to form an "S"-shaped structure, combined with a chute, guide rod and slider, return spring and hinge, and equipped with a movable cover and float device to form a water seal to prevent backflow, and works with a screen to filter debris.
It effectively prevents backflow of water, improves drainage efficiency, reduces the risk of blockage, enhances sealing performance, and ensures the stable operation of farmland drainage systems.
Smart Images
Figure CN223621019U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage device technology, specifically to a backflow prevention device for farmland irrigation drainage outlets. Background Technology
[0002] Farmland irrigation and drainage are crucial for ensuring the stable development of agricultural production. Traditional farmland drainage systems typically discharge directly from fields into rivers or lakes. However, when faced with floods caused by extreme weather, these direct discharge systems are prone to backflow, meaning that wastewater containing high concentrations of pollutants may flow back into the fields, causing secondary pollution. In addition, during heavy rains, some farmlands often experience poor drainage due to inadequate drainage system design, leading to blockages by silt, crop roots, and other debris, further reducing drainage efficiency and affecting the healthy growth of crops. Therefore, a backflow prevention device for farmland irrigation drainage outlets is needed. Utility Model Content
[0003] The purpose of this utility model is to provide a backflow prevention device for farmland irrigation drainage outlets, which addresses the defects and shortcomings of existing technologies and can solve the aforementioned deficiencies.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: It includes a drain pipe and a connecting pipe, which are connected by a tee fitting. The drain pipe, tee fitting, and connecting pipe form an "S" shaped structure. A groove is provided on the upper part of the outer wall of the drain pipe, and a guide rod is provided in the groove. The guide rod passes through a slider and is slidably fitted in the groove. Two return springs are fixed at one end on the right side of the slider and the other end is fixedly connected to the inner wall of the right side of the groove. One end of two connecting rods is hinged to the front and rear sides of the slider and the other end is hinged to the top sides of the hinge member. The lower sides of the hinge member are hinged to the hinge seat. The hinge seat is fixedly located on the upper left end of the drain pipe. A movable cover is fixed below the hinge member and is located on the left end of the drain pipe.
[0005] Furthermore, the drain pipe is equipped with a grille.
[0006] Furthermore, the inner side of the movable cover is provided with a sealing plug that matches the inner wall of the drain pipe port, and the inner side of the sealing plug has a protruding structure.
[0007] Furthermore, the right side of the tee fitting is provided with an inspection port, and the inspection port is provided with a threaded structure. The inspection cover is screwed onto the inspection port using the threaded structure.
[0008] Furthermore, the bottom of the vertical pipe of the tee fitting is provided with a float ball, and the bottom port of the vertical pipe of the tee fitting is provided with a sealing ring that cooperates with the float ball. The float ball is connected to the corner of the connecting pipe by an elastic rope.
[0009] Furthermore, the drain pipe and tee fitting, the connecting pipe and tee fitting are inserted into each other, and the connecting pipe is fixed to the ground with bolts using a fixing bracket.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a backflow prevention device for farmland irrigation drainage outlets. Through the cooperation of a sliding groove, guide rod and slider, plus the action of a return spring and hinge, the movable cover opens and closes in coordination with drainage. At the same time, in conjunction with the "S" shaped pipe, it effectively prevents water backflow. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a structural schematic diagram of the drainage pipe of this utility model.
[0013] Figure 3 This is a schematic diagram of the structure for removing the drain pipe according to this utility model.
[0014] Figure 4 This is a schematic diagram of the internal structure of the tee and connecting pipe of this utility model.
[0015] Explanation of reference numerals in the attached drawings: 1. Drain pipe; 2. Tee fitting; 3. Connecting pipe; 4. Return spring; 5. Slide groove; 6. Guide rod; 7. Slider; 8. Connecting rod; 9. Hinge; 10. Hinge seat; 11. Movable cover; 12. Sealing plug; 13. Grille; 14. Inspection cover; 15. Float; 16. Elastic rope; 17. Inspection port; 18. Threaded structure. Detailed Implementation
[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] like Figures 1-4As shown, this specific embodiment adopts the following technical solution: It includes a drain pipe 1 and a connecting pipe 3, which are connected by a tee fitting 2. The drain pipe 1, tee fitting 2, and connecting pipe 3 form an "S" shaped structure. A groove 5 is provided on the upper part of the outer wall of the drain pipe 1. A guide rod 6 is fixed in the groove 5. The guide rod 6 passes through a slider 7. The slider 7 is slidably fitted in the groove 5. Two return springs 4 are fixed at one end on the right side of the slider 7 and the other end is fixedly connected to the inner wall of the right side of the groove 5. Two connecting rods 8 are hinged at one end to the front and rear sides of the slider 7 and the other end to the top sides of the hinge 9. The lower sides of the hinge 9 are hinged to the hinge seat 10. The hinge seat 10 is fixedly set on the upper left side of the drain pipe 1. A [missing information - likely a device or structure] is fixed below the hinge 9. A movable cover 11 is provided on the left port of the drain pipe 1; a grid 13 is fixed inside the drain pipe 1; a sealing plug 12 that mates with the inner wall of the drain pipe 1 port is provided on the inner side of the movable cover 11, and the sealing plug 12 has a protruding structure on its inner side; an inspection port 17 is provided on the right side of the tee fitting 2, and a threaded structure 18 is provided on the inspection port 17, and the inspection cover 14 is screwed onto the inspection port 17 using the threaded structure 18; a float ball 15 is provided at the bottom of the vertical pipe of the tee fitting 2, and a sealing ring that mates with the float ball 15 is provided at the bottom port of the vertical pipe of the tee fitting 2, and the float ball 15 is connected to the corner of the connecting pipe 3 by an elastic rope 16; the drain pipe 1 and the tee fitting 2, and the connecting pipe 3 and the tee fitting 2 are interlocked; the connecting pipe 3 is fixed to the ground by a fixing bracket 19 and bolts.
[0018] In using this utility model, the connecting pipe 3 is connected to the drain pipe 1, and the connecting pipe 3 is set on the fixing frame 19. The fixing frame 19 is fixed to the ground with bolts. The drain pipe 1, the tee fitting 2, and the connecting pipe 3 form an "S" shape. A water seal is formed at the tee position to prevent backflow of drainage. After the drainage passes through the connecting pipe 3 and the tee, pressure is applied to the float 15, causing the float 15 to separate from the sealing ring on the tee and enter the drain pipe 1. The drainage is discharged through the drain pipe 1. The drainage applies pressure to the movable cover 11, causing the hinge 9 to rotate. This is achieved by the upper connecting rod 8. The sliding mechanism slides along the groove 5 to the right, applying pressure to the return spring 4. When there is no drainage, the return spring 4 returns to its original position, and the connecting rod 8 drives the movable cover 11 to close. The movable cover 11 has a sealing plug 12 that matches the drain pipe 1, which can prevent wastewater from flowing back. The elastic rope 16 drives the float 15 to re-fit with the sealing ring, forming a barrier against backflow. The grille 13 can block debris from entering the drain pipe 1. When it is necessary to clean the inside, unscrew the inspection cover 14 and use tools to clean the waste that has settled at the tee through the inspection port 17.
[0019] Compared with the prior art, the beneficial effects of this specific embodiment are:
[0020] 1. The sliding cover opens and closes for drainage by using a sliding groove, guide rod and slider in conjunction with a return spring and hinge.
[0021] 2. By connecting the drain pipe and connecting pipe with a tee fitting to form an "S" shape, the drainage path is effectively extended, drainage efficiency is improved, and the risk of blockage is reduced.
[0022] 3. The drain pipe is equipped with a grating to prevent large particles from entering, and the movable cover has a sealing plug to enhance the sealing performance and prevent sewage from entering.
[0023] 4. The bottom float of the tee fitting is secured with an elastic rope to prevent displacement and backflow of water when there is no drainage. The fixing bracket enhances the overall structural stability.
[0024] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A backflow prevention device for farmland irrigation drainage outlets, characterized in that: It includes a drain pipe (1) and a connecting pipe (3), which are connected by a tee fitting (2). The drain pipe (1), the tee fitting (2), and the connecting pipe (3) form an "S" shaped structure. A groove (5) is provided on the upper part of the outer wall of the drain pipe (1). A guide rod (6) is provided in the groove (5). The guide rod (6) passes through a slider (7). The slider (7) is slidably fitted in the groove (5). One end of each of the two return springs (4) is fixed. The two connecting rods (8) are set at both ends on the right side of the slider (7) and the other end is fixedly connected to the inner wall of the right side of the slide groove (5). One end of each connecting rod (8) is hinged to the front and rear sides of the slider (7) respectively, and the other end is hinged to the top sides of the hinge (9). The lower sides of the hinge (9) are hinged to the hinge seat (10). The hinge seat (10) is fixedly set at the upper left end of the drain pipe (1). A movable cover (11) is fixed below the hinge (9). The movable cover (11) is located on the left end of the drain pipe (1).
2. The backflow prevention device for farmland irrigation drainage outlets according to claim 1, characterized in that: The drain pipe (1) is equipped with a grating (13).
3. The backflow prevention device for farmland irrigation drainage outlets according to claim 2, characterized in that: The inner side of the movable cover (11) is provided with a sealing plug (12) that matches the inner wall of the drain pipe (1) port, and the inner side of the sealing plug (12) has a protruding structure.
4. The backflow prevention device for farmland irrigation drainage outlets according to claim 3, characterized in that: The tee fitting (2) has an inspection port (17) on its right side. The inspection port (17) has a threaded structure (18), and the inspection cover (14) is screwed onto the inspection port (17) using the threaded structure (18).
5. The backflow prevention device for farmland irrigation drainage outlets according to claim 4, characterized in that: The bottom of the vertical pipe of the tee fitting (2) is provided with a float (15), and the bottom port of the vertical pipe of the tee fitting (2) is provided with a sealing ring that cooperates with the float (15). The float (15) is connected to the corner of the connecting pipe (3) by an elastic rope (16).
6. The backflow prevention device for farmland irrigation drainage outlets according to claim 5, characterized in that: The drain pipe (1) and the tee fitting (2) are connected to each other, and the connecting pipe (3) and the tee fitting (2) are connected together. The connecting pipe (3) is fixed to the ground with bolts using a fixing bracket (19).