Drainage device for agricultural water conservancy projects

Abstract

This utility model relates to the field of agricultural drainage technology, specifically to a drainage device for agricultural water conservancy projects, including a filter assembly and a backwashing assembly for flushing and cleaning the filter assembly when it is clogged. The filter assembly includes a filter screen with a protrusion larger than the diameter of the filter screen at its upper end. A connector is rotatably connected above the filter screen, and a groove with the same shape as the protrusion is provided below the connector. The groove is slightly larger than the volume of the protrusion, and the protrusion rotates within the groove. A bracket is fixedly connected inside the upper end of the connector. A guide rod is rotatably connected to the center point of the bracket, penetrating the connector and reaching the filter screen. The end of the guide rod away from the bracket is fixedly connected to the filter screen. A water wheel is fixedly connected to the upper end of the guide rod. Through the cooperation of the water wheel and the filter screen, when water passes through, both rotate together. The water wheel rotates due to impact, and the guide rod drives the filter screen to rotate synchronously. Under the action of centrifugal force, the debris on the surface of the filter screen is quickly thrown away.

Description

Technical Field

[0001] This utility model relates to the field of agricultural drainage technology, and more specifically, to a drainage device for agricultural water conservancy projects. Background Technology

[0002] In agricultural water conservancy projects, drainage devices are key facilities to ensure the normal operation of farmland drainage, irrigation, and other functions.

[0003] Traditional agricultural irrigation drainage systems suffer from reduced cross-sectional area and obstructed flow when the intake is blocked by debris such as mud, weeds, and straw. This significantly slows the water flow rate. In emergencies requiring rapid drainage, such as heavy rains, delayed drainage can lead to waterlogging in farmland, causing crop roots to be submerged for extended periods. This impairs root respiration, hinders normal crop growth and development, and in severe cases, can even cause crop death.

[0004] Therefore, there is an urgent need for a drainage device for agricultural water conservancy projects to improve the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to provide a drainage device for agricultural water conservancy projects. When the water wheel rotates due to impact, the filter screen rotates synchronously via a guide rod. Under centrifugal force, debris on the filter screen surface is quickly thrown off, thus solving the problems mentioned in the background art.

[0006] The inlet of the drainage device is easily blocked by debris such as mud, weeds, and straw, which reduces the cross-sectional area of ​​the water passage, obstructs the water flow channel, and significantly reduces the speed at which water flows into the drainage device.

[0007] To achieve the above objectives, this utility model provides a drainage device for agricultural water conservancy projects, including a filter assembly and a backwashing assembly for flushing and cleaning the filter assembly when it is clogged. The filter assembly includes a filter screen, with a protrusion larger than the diameter of the filter screen at the upper end. A connector is rotatably connected above the filter screen, and a groove with the same shape as the protrusion is provided below the connector. The size of the groove is slightly larger than the volume of the protrusion, and the protrusion rotates within the groove.

[0008] A bracket is fixedly connected to the upper end of the connector. A guide rod that passes through the connector and reaches the filter screen is rotatably connected to the center point of the bracket. The end of the guide rod away from the bracket is fixedly connected to the filter screen. A water wheel is fixedly connected to the upper end of the guide rod. Through the cooperation of the water wheel and the filter screen, the two rotate together when water passes through.

[0009] In the above technical solution, the filter screen intercepts impurities in the water, and the water flow impacts the water wheel, causing it to rotate. Since the water wheel is fixedly connected to the upper end of the guide rod, and the guide rod passes through the connector and is fixed to the filter screen at its lower end, the rotation of the water wheel drives the filter screen to rotate along with it via the guide rod. The protrusions on the filter screen rotate within a slightly larger groove below the connector, ensuring the stability of the filter screen's rotation. The centrifugal force generated by the rotation of the filter screen can fling away impurities adhering to its surface, thereby reducing filter screen clogging.

[0010] Based on this, the flushing seat has a through-axis, and a thread is provided on the inner wall of the lower end of the flushing seat axis. The connector also has a thread at its upper end. The connector and the lower end of the flushing seat are engaged by the threads. The flushing seat has a through-axis, and its lower end of the inner wall has a thread. The upper end of the connector also has a corresponding thread, and the two are connected together by the thread engagement. This connection method not only ensures the stability of the connection between the flushing seat and the connector, preventing loosening and leakage during backwashing, but also ensures the internal communication between the flushing seat and the filter assembly.

[0011] In another technical solution, the backwashing assembly includes a flushing seat with hollow sidewalls. A nozzle for flushing the filter screen is located below the flushing seat, and the nozzle communicates with the interior of the flushing seat. When the filter screen in the drainage device's filtration assembly becomes clogged due to impurities, the backwashing assembly begins to function. An external water source introduces water into the flushing seat. Because the flushing seat's sidewalls are hollow, the water flows within its internal space after entering. Then, the water is sprayed out through the nozzle communicating with the interior of the flushing seat, with the nozzle facing the filter screen. The high-pressure water flow directly impacts the filter screen surface. The powerful water flow washes away impurities adhering to the filter screen surface and embedded in the filter screen pores, allowing the impurities to be discharged with the water flow from a specific outlet of the drainage device, thereby achieving the purpose of cleaning the filter screen and restoring its filtration performance.

[0012] In addition, a check valve housing is fixedly connected to the upper end of the conduit. The check valve housing has a through-axis and a water cavity for backwashing on its side wall. A through groove is provided in the middle of the water cavity of the check valve housing near the axis. A stop block is fixedly connected to the check valve housing at the through groove. The stop block can be opened towards the water cavity. A check valve baffle is rotatably connected to the lower end of the check valve housing at the axis of the through groove. A connecting pipe is fixedly connected to the upper surface of the check valve housing. The connecting pipe is used to connect to external pumping equipment.

[0013] Because the check valve housing is axially oriented, water entering the housing first fills the water cavity on the side wall. As the water pressure within the cavity gradually increases, when the pressure reaches a certain level, the pressure acting on the baffle overcomes its own resistance, causing the baffle to open towards the water cavity. At this point, the water in the cavity flows out through the channel. During the water flow through the channel, the check valve acts, preventing backflow and ensuring that the water flows only in the predetermined direction through the guide tube into the flushing seat, ultimately spraying out from the nozzle to flush the filter screen.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This drainage device for agricultural water conservancy projects works by rotating a waterwheel upon water flow. This rotation, via a guide rod, causes the filter screen to rotate synchronously. Centrifugal force quickly dislodges debris from the filter screen surface. This effectively prevents debris buildup and clogging, ensuring smooth drainage and significantly improving drainage efficiency. It also reduces the frequency of manual cleaning, lowering maintenance costs and manpower. Furthermore, it reduces wear and corrosion on the filter screen, extending its lifespan. Moreover, it better adapts to complex and varying agricultural drainage water quality, enhancing the reliability of the drainage system and providing strong support for stable agricultural production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0017] Figure 2 This is a schematic diagram of the filter component structure in an embodiment;

[0018] Figure 3 This is a schematic diagram of the flushing seat structure in an embodiment;

[0019] Figure 4 This is a schematic diagram of the backwashing assembly structure in an embodiment;

[0020] Figure 5 This is a schematic diagram of the backwashing and drainage process structure for an embodiment.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Filter assembly; 100. Filter screen; 101. Connector; 102. Bracket; 103. Water wheel; 104. Guide rod; 105. Protrusion; 106. Groove;

[0023] 2. Backwash assembly; 200. Flushing seat; 201. Nozzle; 202. Conduit; 203. Check valve housing; 204. Check valve baffle; 205. Stop block; 206. Connecting pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The inlets of current drainage systems are easily blocked by debris such as mud, weeds, and straw, reducing the cross-sectional area for water flow, obstructing the water flow channel, and significantly reducing the speed at which water flows into the drainage system. Please refer to [link / reference needed]. Figures 2-4 As shown, this embodiment provides a drainage device for agricultural water conservancy projects, including a filter assembly 1 and a backwashing assembly 2 for flushing and cleaning the filter assembly 1 when it is clogged. The filter assembly 1 includes a filter screen 100, with a protrusion 105 larger than the diameter of the filter screen 100 at the upper end. A connector 101 is rotatably connected to the upper part of the filter screen 100, and a groove 106 with the same shape as the protrusion 105 is provided below the connector 101. The size of the groove 106 is slightly larger than the volume of the protrusion 105, and the protrusion 105 rotates within the groove 106.

[0026] A bracket 102 is fixedly connected to the upper end of the connector 101. A guide rod 104 is rotatably connected to the center point of the bracket 102, passing through the connector 101 and reaching the filter screen 100. The end of the guide rod 104 away from the bracket 102 is fixedly connected to the filter screen 100. A water wheel 103 is fixedly connected to the upper end of the guide rod 104. Through the cooperation of the water wheel 103 and the filter screen 100, the two rotate together when water passes through.

[0027] During implementation, in the drainage process, the water first passes through the filter screen 100 of the filter assembly 1, which intercepts impurities in the water. Simultaneously, the water flow impacts the water wheel 103, causing it to rotate. Since the water wheel 103 is fixedly connected to the upper end of the guide rod 104, and the guide rod 104 passes through the connector 101 with its lower end fixed to the filter screen 100, the rotation of the water wheel 103 drives the filter screen 100 to rotate along with it via the guide rod 104. The protrusions 105 of the filter screen 100 rotate within a slightly larger groove 106 below the connector 101, ensuring the stability of the filter screen 100's rotation. The centrifugal force generated by the rotation of the filter screen 100 can fling away debris adhering to its surface, thereby reducing clogging. When the filter screen 100 becomes clogged, the backwash assembly 2 is activated to flush and clean the filter screen 100, restoring its good filtration performance and ensuring the continuous and efficient operation of the drainage device.

[0028] See Figure 3As shown, during backwashing, because the sidewall of the backwash seat 200 is hollow, after the water flows into the backwash seat 200, the water is sprayed out through the nozzle 201, which is connected to the inside of the backwash seat 200. The nozzle 201 faces the filter screen 100, and the high-pressure water flow directly impacts the surface of the filter screen 100. The strong water flow can wash away the impurities attached to the surface of the filter screen 100 and embedded in the pores of the filter screen 100, allowing the impurities to be discharged with the water flow from a specific outlet of the drainage device, thereby achieving the purpose of cleaning the filter screen 100 and restoring the filtration performance of the filter screen 100.

[0029] Figure 4 In the middle, the upper end of the conduit 202 is fixedly connected to the check housing 203, the check housing 203 is axially penetrating, and the side wall is provided with a water cavity for backwashing. The middle part of the water cavity of the check housing 203 is provided with a through groove near the axis. The check housing 203 is fixedly connected to the through groove with a stop 205, which can be opened towards the water cavity.

[0030] During backwashing, the connecting pipe 206 introduces water from an external pumping device into the check valve housing 203. Because the check valve housing 203 is axially oriented, the water flows in and fills the water cavity on the side wall. As the water pressure inside the cavity continues to rise, when it reaches a certain value, the pressure acting on the baffle 205 is sufficient to overcome its resistance, causing the baffle 205 to open towards the water cavity. Thus, the water in the cavity can flow out through the channel, providing a water source for the subsequent rinsing of the filter screen 100. This design of the baffle 205 ensures that water only flows out when the water pressure is sufficient, preventing arbitrary leakage of water from the cavity and maintaining the stability of the backwash water supply.

[0031] In addition, a check valve 204 is rotatably connected to the lower end of the check valve housing 203, which is axially located in the through groove. A connecting pipe 206 is fixedly connected to the upper surface of the check valve housing 203. The connecting pipe 206 is used to connect to external pumping equipment. When water flows out of the through groove, the check valve 204 is rotatably connected to the lower end of the check valve housing 203, which effectively prevents water backflow. Since the water flow direction needs to remain stable during backwashing, if backflow occurs, it will not only affect the backwashing effect but may also damage components such as external pumping equipment.

[0032] See Figure 5 As shown, water enters from the bottom of the device, first passing through the filter screen 100 area for preliminary filtration, where impurities in the water are intercepted by the filter screen 100. Next, the water flow impacts the water wheel 103 located above the filter screen 100, causing the water wheel 103 to rotate. Then, the water continues to flow upwards, passing through the middle of the device, and finally flowing out from the top of the device. During backwashing, backwash water flows from the device through the check valve housing 203, along the water chambers on both sides of the device, and through the nozzles 201 to backwash the filter screen 100, removing impurities adhering to the filter screen 100.

[0033] In this embodiment, a drainage device for agricultural water conservancy projects is used such that, upon entering the device, water first passes through a filter screen 100, which intercepts impurities in the water. During this process, the water flow impacts a water wheel 103. Since the water wheel 103 is fixedly connected to the filter screen 100 via a guide rod 104, and the protrusions 105 of the filter screen 100 can rotate within the grooves 106 of the connector 101, the rotation of the water wheel 103 causes the filter screen 100 to rotate synchronously. This design allows the filter screen 100 to use centrifugal force to fling away debris adhering to its surface during rotation, thereby reducing clogging and maintaining a good filtration effect.

[0034] When filter screen 100 becomes clogged, backwash assembly 2 starts working. Connecting pipe 206 is connected to external water pumping equipment. Due to the opening of water pressure baffle 205, water flows through the through groove into the water cavity on the side wall of check valve housing 203. Check valve baffle 204 prevents water backflow, ensuring that water flows through conduit 202 into flushing seat 200. The side wall of flushing seat 200 is hollow. After flowing inside, water is sprayed out through nozzle 201. The nozzle 201 faces filter screen 100, and the high-pressure water flow thoroughly flushes filter screen 100, washing away impurities.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drainage device for agricultural water conservancy projects, comprising a filter assembly (1) and a backwashing assembly (2) for flushing and cleaning the filter assembly (1) when it is clogged, characterized in that: The filter assembly (1) includes a filter screen (100), the upper end of the filter screen (100) is provided with a protrusion (105) larger than the diameter of the filter screen (100), a connector (101) is rotatably connected above the filter screen (100), and a groove (106) with the same shape as the protrusion (105) is provided below the connector (101). The size of the groove (106) is slightly larger than the volume of the protrusion (105), and the protrusion (105) rotates within the groove (106). A bracket (102) is fixedly connected to the upper end of the connector (101). A guide rod (104) is rotatably connected to the center point of the bracket (102) and extends through the connector (101) to the filter screen (100). The end of the guide rod (104) away from the bracket (102) is fixedly connected to the filter screen (100). A water wheel (103) is fixedly connected to the upper end of the guide rod (104). Through the cooperation of the water wheel (103) and the filter screen (100), the two rotate together when water passes through.

2. The drainage device for agricultural water conservancy projects according to claim 1, characterized in that: The backwash assembly (2) includes a flushing seat (200) with a hollow side wall. A nozzle (201) for flushing the filter screen (100) is provided below the flushing seat (200), and the nozzle (201) is in communication with the interior of the flushing seat (200).

3. The drainage device for agricultural water conservancy projects according to claim 2, characterized in that: The flushing seat (200) is axially oriented and has threads on the inner wall at the lower end of the flushing seat (200).

4. The drainage device for agricultural water conservancy projects according to claim 3, characterized in that: The upper end of the connector (101) is threaded, and the lower end of the connector (101) and the flushing seat (200) are engaged by the thread.

5. The drainage device for agricultural water conservancy projects according to claim 2, characterized in that: A conduit (202) is fixedly connected to the upper surface of the rinsing seat (200), and the conduit (202) communicates with the hollow part of the side wall of the rinsing seat (200).

6. The drainage device for agricultural water conservancy projects according to claim 5, characterized in that: The upper end of the conduit (202) is fixedly connected to a check valve housing (203), which is axially penetrated and has a water cavity for backwashing on its side wall.

7. The drainage device for agricultural water conservancy projects according to claim 6, characterized in that: The anti-reverse housing (203) has a through groove in the middle of the water cavity near the axis. A stop block (205) is fixedly connected to the anti-reverse housing (203) at the through groove. The stop block (205) can be opened towards the water cavity.

8. The drainage device for agricultural water conservancy projects according to claim 7, characterized in that: The anti-reverse housing (203) is rotatably connected to the lower end of the through groove. A connecting pipe (206) is fixedly connected to the upper surface of the anti-reverse housing (203). The connecting pipe (206) is used to connect to external pumping equipment.

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