A farmland drainage ditch filtering device
By designing a combination of a baffle structure and a filter device, and utilizing the synchronous start-up of a water pump, and by implementing the device to automate the removal of debris, the problem of automated debris removal in existing technologies has been solved, as well as the problem of efficient drainage of debris in existing technologies has been addressed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 1 CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-23
Smart Images

Figure CN224395512U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a filtration device for farmland drainage ditches. Background Technology
[0002] Farmland drainage ditches are an important component of agricultural infrastructure, primarily used to regulate farmland moisture, prevent waterlogging, and ensure normal crop growth. Their main function is drainage; during the rainy season or after irrigation, the ditches promptly remove excess water, preventing the soil from becoming too wet and causing root hypoxia. However, research has found that because the upper ends of drainage ditches are exposed to the outside environment, debris such as leaves, weeds, and straw inevitably accumulates inside. While small amounts of debris can be carried away by the drainage, a large accumulation of debris can affect the drainage efficiency of the ditches to some extent, and may even block them, hindering drainage.
[0003] In existing farmland drainage ditch filtration devices, filter screens are generally installed inside the ditch, and debris inside the ditch is cleaned by manual dredging. This operation method is time-consuming and labor-intensive, and water will overflow when the filter screen becomes clogged.
[0004] Based on the above problems, we designed a farmland drainage ditch filtration device that automatically cleans up debris by simultaneously starting a random water pump and flushing it together while delivering water. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a farmland drainage ditch filtration device that starts synchronously with a water pump, and automatically cleans up debris by flushing it together while delivering water.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] A filtration device for farmland drainage ditches, comprising,
[0008] The balustrade structure is vertically inserted into the ditch, with both ends of the balustrade structure fixed to the ground.
[0009] A filtration device is fixedly connected to the baffle structure. Water in the ditch flows through the baffle structure to the interior of the filtration device, where it is discharged. Impurities are trapped within the filtration device.
[0010] An extraction device, which works in conjunction with a filtering device, extracts the intercepted debris to the outside of the ditch through its operation.
[0011] Preferably, the guardrail structure includes a guardrail that is inserted into and fits against the inner wall of the ditch. Widened portions are cut at the top two sides of the guardrail and are supported on the top two sides of the ditch. A connecting plate is formed by bending the rear end of the widened portions, and connecting holes are drilled on the connecting plate. An opening is provided on the surface of the guardrail, and a tapered guide tube is welded at the opening. The end of the guide tube is connected to the filter device.
[0012] Preferably, an overflow hole is provided on the surface of the guardrail, the height of the overflow hole is higher than the height of the conduit, and the height of the overflow hole is lower than the height of the upper edge of the ditch.
[0013] Preferably, a flow channel is machined on the top of the baffle plate, the flow channel is connected to the overflow hole, a support plate is welded on the back side of the baffle plate, a guide hole is machined on the top of the support plate, a baffle is slidably arranged up and down in the flow channel, a guide rod is welded on the back side of the baffle plate, the guide rod passes through the guide hole, and after passing through, a limit nut is fitted at the lower end of the guide rod. With the cooperation of the guide rod and the guide hole, the baffle can only move up and down. A diagonal rod is welded on the front side of the baffle plate, the diagonal rod is inclined downward, a float is welded at the lower end of the diagonal rod, a water injection hole is provided on the top of the float, and a sealing plug is installed at the water injection hole.
[0014] Preferably, the filtration device includes a vertical pipe with a bottom cover detachably installed at its lower end. A through groove is machined on the side of the vertical pipe, and a filter screen is welded into the through groove. The upper end of the filter screen is higher than the upper edge of the ditch. An outlet is machined on the outer wall of the vertical pipe, and the outlet is higher than the filter screen. A discharge trough corresponding to the outlet is welded on the outer wall of the vertical pipe. The upper end of the vertical pipe is open, and the extraction device is inserted through the upper end of the vertical pipe. A draining screen is welded to the discharge trough, and the draining screen corresponds to the upper part of the ditch.
[0015] Preferably, the extraction device includes a top cover and a drive motor fixed to the top of the top cover. A rotating shaft is installed at the output end of the drive motor, and a spiral blade is welded to the outside of the rotating shaft. The top cover is detachably fixed to the top of the vertical pipe. The spiral blade fits against the inner wall of the vertical pipe, and the upper end of the spiral blade reaches the height of the discharge port, so that the debris lifted upward by the spiral blade is discharged from the discharge port. The drive motor is powered by mains electricity, and its control switch is located in the pump room.
[0016] Preferably, a water-stop ring is provided on the top of the top cover, the water-stop ring is located outside the drive motor, a motor cover is installed through the water-stop ring, the motor cover covers the drive motor, a heat dissipation vent is provided on the outside of the motor cover, a water baffle is welded at the heat dissipation vent, the water baffle has a downward-facing bottom opening, the heat discharged through the heat dissipation vent is discharged from the bottom opening, a partition is fixed with screws inside the motor cover, the height of the partition is lower than the heat dissipation vent, a cooling fan is installed through the partition, a downward-curved conduit is welded on the outside of the motor cover, and a conduit hole is drilled on the surface of the partition.
[0017] The beneficial effects of this utility model are:
[0018] One advantage is that this device uses a baffle design, which can intercept the water flow and guide it into the filtration device to achieve water filtration. The intercepted debris is then extracted upwards by the extraction device and discharged to the side of the ditch for easy manual cleaning.
[0019] Secondly, this device can share the same control unit with the water pump in the computer room. When the water pump starts, this device starts synchronously, eliminating the need for separate control and making it easier to manage.
[0020] Thirdly, this device can automatically clean up debris, and maintenance personnel only need to clean it up periodically, making it convenient and labor-saving to operate. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is an exploded view of the structure used in this application;
[0024] Figure 3 This is a schematic diagram of the balustrade structure;
[0025] Figure 4 This is a schematic diagram showing the baffle plate floating upwards;
[0026] Figure 5 This is a schematic diagram of the rear of the baffle.
[0027] Figure 6 A three-dimensional view of the extraction device;
[0028] Figure 7 for Figure 6 A schematic diagram of side A. Detailed Implementation
[0029] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0030] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0031] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] See Figure 1 The illustrated farmland drainage ditch filtration device includes,
[0035] A parapet structure 1 is vertically inserted into the ditch, with both ends of the parapet structure 1 fixed to the ground.
[0036] Filter device 2 is connected and fixed to the baffle structure 1. Water in the ditch is guided to the interior of the filter device 2 through the baffle structure 1, and then discharged from the filter device 2. Impurities are trapped inside the filter device 2.
[0037] Extraction device 3, which works in conjunction with the filtering device 2, extracts the intercepted debris to the outside of the ditch through its operation.
[0038] In the above technical solution, a barrier structure 1 is used to intercept the water in the ditch, so that the water flow is intercepted and guided into the filter device 2. The filter device 2 intercepts water plants and other debris, and then the water continues to be transported. The intercepted debris is then extracted upward to the side of the ditch by the extraction device 3, which is convenient for manual cleaning.
[0039] See Figure 2 and Figure 3 As shown, the guardrail structure 1 includes a guardrail 11, which is inserted into the inner wall of the ditch. Widened portions 12 are cut at the top two sides of the guardrail 11 and are mounted on the top two sides of the ditch. A connecting plate 13 is formed by bending the rear end of the widened portion 12. A connecting hole 14 is drilled on the connecting plate 13. An opening is provided on the surface of the guardrail 11, and a tapered guide tube 15 is welded at the opening. The end of the guide tube 15 is connected to the filter device 2.
[0040] In the above technical solution, ground bolts are driven into the connecting hole 14 to effectively fix the guardrail 11.
[0041] Ground bolts are driven into the trench or soil layer and then reinforced with structural adhesive.
[0042] In the above technical solution, the water intercepted by the baffle 11 is poured into the filter device 2 through the conduit 15.
[0043] See Figure 3 As shown, an overflow hole 16 is provided on the surface of the guardrail 11. The height of the overflow hole 16 is higher than the height of the conduit 15, and the height of the overflow hole 16 is lower than the height of the upper edge of the ditch.
[0044] With the design of overflow hole 16, when the conduit 15 is blocked, preventing water from passing through quickly, the water level will rise in the ditch and be forced to overflow when it reaches the height of overflow hole 16.
[0045] See Figure 3 , Figure 4 and Figure 5As shown, a flow channel 17 is machined on the top of the baffle plate 11, and the flow channel 17 communicates with the overflow hole 16. A support plate 18 is welded to the back water side of the baffle plate 11, and a guide hole 181 is machined on the top of the support plate 18. A baffle 19 is slidably arranged up and down in the flow channel 17. A guide rod 110 is welded to the back water side of the baffle 19. The guide rod 110 passes through the guide hole. After passing through, a limit nut 199 is fitted at the lower end of the guide rod 110. With the cooperation of the guide rod 110 and the guide hole, the baffle 19 can only move up and down. A diagonal rod 111 is welded to the front water side of the baffle 19. The diagonal rod 111 is inclined downward. A float 112 is welded to the lower end of the diagonal rod 111. A water injection hole is provided at the top of the float 112, and a sealing plug 113 is installed at the water injection hole.
[0046] The above technical solution provides an emergency overflow device for high-flow water supply.
[0047] When water is supplied at a high flow rate and the conduit 15 is blocked, the water level in the ditch rises rapidly to the height of the overflow hole 16. When the overflow capacity of the overflow hole 16 is insufficient, the float 112 begins to float up under the action of buoyancy, which drives the baffle 19 to move upward, so that the flow channel 17 is opened.
[0048] To prevent the baffle 19 from getting stuck, the baffle 19 and the two side walls of the overflow channel 17 are fitted with a clearance. When the water level has not reached the bottom of the overflow channel 17 but has reached the overflow hole 16, the float 112 has already contacted the water surface, thus providing buoyancy and allowing the baffle 19 to float.
[0049] This height of the float design can prevent the baffle 19 from bearing the water pressure first, thus avoiding an increase in the sliding resistance of the guide rod 110.
[0050] Alternatively, the baffle 19 can be removed upwards to keep the flow channel 17 in a normally open state, and the choice can be made flexibly according to actual needs.
[0051] See Figure 2 As shown, the filtration device 2 includes a vertical pipe 21, with a bottom cover 22 detachably installed at the lower end of the vertical pipe 21. A through groove is machined on the side of the vertical pipe 21, and a filter screen 23 is welded in the through groove. The upper end of the filter screen 23 is higher than the upper edge of the ditch. An outlet 24 is machined on the outer wall of the vertical pipe 21, and the outlet 24 is higher than the filter screen 23. A discharge trough 25 corresponding to the outlet 24 is welded on the outer wall of the vertical pipe 21. The upper end of the vertical pipe 21 is open, and the extraction device 3 is inserted through the upper end of the vertical pipe 21. A draining net 222 is welded at the discharge trough 25, and the draining net 222 corresponds to the upper part of the ditch.
[0052] In the above technical solution, a filter screen 23 with a height exceeding the upper edge of the ditch is used, which greatly increases the water passage area of the filter screen 23.
[0053] The drain net 222 at the discharge chute 25 can play a simple role in draining water when discharging debris.
[0054] The curvature of filter screen 23 is 2 / 3π to 1π, and the orientation of filter screen 23 is in the direction of water flow.
[0055] See Figure 6 As shown, the extraction device 3 includes a top cover 31 and a drive motor 32 fixed to the top of the top cover 31. A rotating shaft 33 is installed at the output end of the drive motor 32. A spiral blade 34 is welded to the outside of the rotating shaft 33. The top cover 31 is detachably fixed to the top of the vertical pipe 21. The spiral blade 34 fits against the inner wall of the vertical pipe 21. The upper end of the spiral blade 34 reaches the height of the discharge port 24, so that the debris lifted upward by the spiral blade 34 is discharged from the discharge port 24. The drive motor 32 is powered by mains electricity, and its control switch is located in the pump room.
[0056] The drive motor 32 is a geared motor, and the drive motor 32 starts synchronously with the water pump in the pump room.
[0057] The output speed of the drive motor 32 is 5~10 revolutions per minute. This is because the water in the ditch is pumped up by a water pump. The water pump itself has a filter at the inlet when pumping water, so the water pumped in does not contain much debris. The main purpose of this device is to target debris that falls into the ditch from both sides, such as weeds and aquatic plants.
[0058] Maintaining a slow output speed can prevent the spiral vane 34 from carrying water upwards from the ditch when it rotates.
[0059] The height of the spiral blade 34 is precisely set to avoid excessive height, ensuring that the spiral blade 34 can only lift debris to the height of the discharge port 24.
[0060] See Figure 2 , Figure 6 and Figure 7As shown, a water-stop ring 331 is provided on the top of the top cover 31. The water-stop ring 331 is located outside the drive motor 32. A motor cover 332 is installed through the water-stop ring 331, covering the drive motor 32. A heat dissipation vent is provided on the outside of the motor cover 332. A water baffle 333 is welded at the heat dissipation vent. The water baffle 333 has a downward-facing bottom opening 334. The heat discharged through the heat dissipation vent is discharged from the bottom opening 334. A partition 335 is fixed with screws inside the motor cover 332. The height of the partition 335 is lower than the heat dissipation vent. A cooling fan 336 is installed through the partition 335. A downward-curved conduit 337 is welded on the outside of the motor cover 332. A wire hole 338 is drilled on the surface of the partition 335.
[0061] The above technical solution mainly provides waterproof protection for the drive motor and a certain heat dissipation effect. The wiring harness that supplies power to the drive motor and cooling fan is passed out through conduit 337.
[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0066] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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. An agricultural field drainage ditch filter apparatus, characterized by: include, A parapet structure (1) is vertically inserted into the ditch, with both ends of the parapet structure (1) fixed to the ground. A filter device (2) is fixedly connected to the baffle structure (1). Water in the ditch is guided to the interior of the filter device (2) through the baffle structure (1), and the water is discharged from the filter device (2). Impurities are intercepted inside the filter device (2). Extraction device (3), which works in conjunction with the filter device (2), allows the intercepted debris to be extracted to the outside of the ditch through the operation of the extraction device (3).
2. The agricultural field drain filter of claim 1, wherein: The guardrail structure (1) includes a guardrail (11). After the guardrail (11) is inserted, it fits against the inner wall of the ditch. A widened part (12) is cut on both sides of the top of the guardrail (11). The widened part (12) is erected on both sides of the top of the ditch. A connecting plate (13) is formed after the rear end of the widened part (12) is bent. A connecting hole (14) is drilled on the connecting plate (13). An opening is provided on the surface of the guardrail (11). A tapered guide tube (15) is welded at the opening. The end of the guide tube (15) is connected to the filter device (2).
3. The agricultural field drain filter of claim 2, wherein: An overflow hole (16) is provided on the surface of the guardrail (11). The height of the overflow hole (16) is higher than the height of the conduit (15), and the height of the overflow hole (16) is lower than the height of the upper edge of the ditch.
4. The agricultural field drain filter of claim 3, wherein: A flow channel (17) is machined on the top of the baffle plate (11), the flow channel (17) is connected to the overflow hole (16), a support plate (18) is welded on the back side of the baffle plate (11), a guide hole (181) is machined on the top of the support plate (18), a baffle (19) is slidably arranged up and down in the flow channel (17), a guide rod (110) is welded on the back side of the baffle (19), the guide rod (110) passes through the guide hole, and passes through... Afterwards, a limit nut (199) is fitted at the lower end of the guide rod (110). With the cooperation of the guide rod (110) and the guide hole, the baffle (19) can only move up and down. A diagonal rod (111) is welded on the water-facing side of the baffle (19). The diagonal rod (111) is inclined downward. A float (112) is welded at the lower end of the diagonal rod (111). A water injection hole is provided at the top of the float (112). A sealing plug (113) is installed at the water injection hole.
5. The agricultural field drain filter of claim 2, wherein: The filtering device (2) includes a vertical pipe (21), the lower end of which is detachably fitted with a bottom cover (22). A through groove is machined on the side of the vertical pipe (21), and a filter screen (23) is welded in the through groove. The upper end of the filter screen (23) is higher than the upper edge of the ditch. An outlet (24) is machined on the outer wall of the vertical pipe (21), and the outlet (24) is higher than the filter screen (23). A discharge trough (25) corresponding to the outlet (24) is welded on the outer wall of the vertical pipe (21). The upper end of the vertical pipe (21) is open, and the extraction device (3) is inserted through the upper end of the vertical pipe (21). A draining net (222) is welded at the discharge trough (25), and the draining net (222) is above the ditch.
6. The agricultural field drain filter of claim 5, wherein: The extraction device (3) includes a top cover (31) and a drive motor (32) fixed to the top of the top cover (31). A rotating shaft (33) is installed at the output end of the drive motor (32). A spiral blade (34) is welded to the outside of the rotating shaft (33). The top cover (31) is detachably fixed to the top of the vertical pipe (21). The spiral blade (34) fits against the inner wall of the vertical pipe (21). The upper end of the spiral blade (34) reaches the height of the outlet (24), so that the debris lifted upward by the spiral blade (34) is discharged from the outlet (24). The drive motor (32) is powered by mains electricity, and its control switch is located in the pump room.
7. The agricultural field drain filter of claim 6, wherein: A water-stop ring (331) is provided on the top of the top cover (31). The water-stop ring (331) is located outside the drive motor (32). A motor cover (332) is installed through the water-stop ring (331). The motor cover (332) covers the drive motor (32). A heat dissipation port is provided on the outside of the motor cover (332). A water baffle (333) is welded at the heat dissipation port. The water baffle (333) has a bottom opening (334) facing downward. The heat discharged through the heat dissipation port is discharged from the bottom opening (334). A partition (335) is fixed inside the motor cover (332) with screws. The height of the partition (335) is lower than the heat dissipation port. A cooling fan (336) is installed through the partition (335). A downward-curved conduit (337) is welded on the outside of the motor cover (332). A wire hole (338) is drilled on the surface of the partition (335).