Anti-clogging underground water extraction device with self-cleaning function

Abstract

This application relates to a self-cleaning, anti-clogging groundwater extraction device, belonging to the field of soil and groundwater remediation technology. It includes a support plate, a centrifugal pump, an inlet pipe, and an outlet pipe. The inlet pipe is connected to an inlet head, which houses a filter screen and a cleaning plate located below the filter screen. The cleaning plate is driven by a drive component to reciprocate and remove impurities from the filter screen. The drive component includes a water wheel, a rotating shaft, a rotating wheel, a driven wheel, and a reciprocating screw. The flow of groundwater drives the water wheel to rotate, which in turn drives the reciprocating screw to rotate, causing the cleaning plate and the filter screen to move relative to each other, achieving self-cleaning. This device utilizes the kinetic energy of the groundwater itself to drive the cleaning mechanism, requiring no external energy source, effectively preventing filter screen clogging and ensuring continuous and stable water extraction. Simultaneously, the support plate is equipped with a lifting ring and a winding mechanism, facilitating installation and maintenance, making it suitable for long-term field operations, and significantly improving groundwater extraction efficiency and equipment reliability.

Description

Technical Field

[0001] This utility model relates to the field of soil and groundwater remediation technology, and in particular to a groundwater extraction device with self-cleaning function to prevent siltation. Background Technology

[0002] Groundwater extraction, a traditional and efficient soil and groundwater remediation technology, mechanically extracts contaminated groundwater to the surface for treatment to meet remediation needs. Traditional groundwater extraction systems mainly consist of a water pump, a water pipeline, and a well inlet. The inlet is typically equipped with a filter to prevent silt and other suspended impurities from entering the pipeline system. However, during long-term operation, the filter is prone to clogging due to impurity accumulation, leading to decreased water intake efficiency and, in severe cases, even causing the pump to run dry or be damaged, affecting extraction stability.

[0003] To address filter clogging, existing technologies often employ methods such as periodic manual cleaning, high-pressure backwashing, or rotating spare filters. Manual cleaning requires shutdown, is time-consuming and labor-intensive, and is particularly difficult to implement in operating facilities or deep well environments. High-pressure backwashing systems require additional water pumps and control units, resulting in complex structures, high costs, and reliance on external energy supplies, making them unsuitable for areas without electricity. Filter rotation solutions increase equipment size and maintenance costs. Furthermore, while some automatic cleaning devices use motor-driven brushes or scrapers, enabling timed cleaning, they also suffer from high energy consumption, high failure rates, and inconvenient maintenance.

[0004] More significantly, under low flow rates or intermittent water intake conditions, the kinetic energy of the water is insufficient to drive the operation of conventional hydraulic cleaning structures, leading to the failure of the self-cleaning function. Although existing research has attempted to utilize water flow to drive mechanical cleaning structures, these methods generally suffer from drawbacks such as low transmission efficiency, incomplete cleaning, and susceptibility to jamming. Therefore, designing a self-cleaning groundwater extraction device that requires no external energy, can be driven by the flow of groundwater itself, provides stable and reliable cleaning operations, and is suitable for low flow rate conditions has become a major technical problem urgently needing to be solved in this field. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a groundwater extraction device with self-cleaning function to prevent siltation.

[0006] This utility model provides a self-cleaning, anti-clogging groundwater extraction device, which adopts the following technical solution:

[0007] A self-cleaning, anti-clogging groundwater extraction device includes a support plate. A centrifugal pump is provided on the upper surface of the support plate. An inlet pipe and an outlet pipe are respectively connected to the two ends of the centrifugal pump. An inlet head is connected to the end of the inlet pipe away from the centrifugal pump. A filter screen for filtering impurities is provided inside the inlet head. A cleaning plate for preventing the filter screen from clogging is provided below the filter screen. A driving component for driving the cleaning plate to move is provided on the cleaning plate.

[0008] Optionally, the driving component includes a rotating shaft disposed inside the water inlet head. A water wheel is mounted on the rotating shaft, and rotating wheels are coaxially fixedly connected to both ends of the rotating shaft. The rotating wheels are located inside the inner wall of the water inlet head, and driven wheels are engaged below each rotating wheel. The driven wheels are all disposed inside the inner wall of the water inlet head. A reciprocating screw is coaxially fixedly connected between the two driven wheels. The reciprocating screw has two threaded grooves with the same pitch and opposite directions. The two ends of the two threaded grooves are connected by a transition curve. The cleaning plate is threadedly connected to the reciprocating screw.

[0009] Optionally, the cleaning plate is provided with limiting blocks at both ends, and the water inlet head is provided with limiting grooves on both sides. The limiting grooves extend along the setting direction of the reciprocating screw, and the limiting blocks are located at the limiting grooves. The cleaning plate and the water inlet head are slidably connected.

[0010] Optionally, the upper surface of the cleaning plate is provided with cleaning brushes to further clean the openings of the filter screen, and the cleaning brushes are evenly distributed.

[0011] Optionally, the support plate is provided with a support frame, and the support frame is provided with a collecting roller for winding up the water inlet pipe. The collecting roller is provided with a plurality of protrusions, which are evenly arranged.

[0012] Optionally, one end of the support frame is provided with a rotating handle, which is coaxially and fixedly connected to the collecting roller.

[0013] Optionally, the support plate is provided with lifting rings on all four sides.

[0014] In summary, this utility model has at least one of the following beneficial technical effects:

[0015] 1. By adopting a water-driven reciprocating screw transmission structure, the water turbine is rotated by the flow of groundwater, and the reciprocating screw is driven by gear transmission to make the cleaning plate move back and forth, thus realizing automatic cleaning of the filter screen without the need for external energy and solving the technical problem of water intake interruption caused by filter screen clogging in traditional devices.

[0016] 2. By adopting a sliding fit structure between the limiting block and the limiting groove, the movement resistance of the cleaning plate is significantly reduced, jamming is prevented, and the operational stability and lifespan of the self-cleaning mechanism are improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a self-cleaning, anti-clogging groundwater extraction device.

[0018] Figure 2 This is a schematic diagram showing the internal structure of the inlet head in a self-cleaning, anti-clogging groundwater extraction device.

[0019] Explanation of reference numerals in the attached drawings: 1. Support plate; 11. Support frame; 12. Collecting roller; 13. Raised strip; 14. Rotating handle; 15. Lifting ring; 2. Centrifugal pump; 21. Inlet pipe; 22. Outlet pipe; 23. Inlet head; 231. Filter screen; 232. Cleaning plate; 2321. Limiting block; 233. Cleaning brush; 234. Driving component; 235. Rotating shaft; 236. Water wheel; 237. Rotating wheel; 238. Driven wheel; 239. Reciprocating screw. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to all the accompanying drawings.

[0021] Example 1

[0022] Reference Figure 1 and Figure 2 This embodiment discloses a self-cleaning, anti-clogging groundwater extraction device, including a support plate 1, which is a rectangular steel plate. A centrifugal pump 2 is fixedly installed on the upper surface of the support plate 1. The inlet of the centrifugal pump 2 is connected to an inlet pipe 21 via a flange, and the outlet is connected to an outlet pipe 22. The inlet pipe 21 is a flexible high-pressure hose, and its end away from the centrifugal pump 2 is connected to an inlet head 23. A filter screen 231 is horizontally arranged inside the filter screen 231, which is a stainless steel woven mesh used to intercept silt and particulate matter in the groundwater.

[0023] Reference Figure 1 and Figure 2 A cleaning plate 232 is provided directly below the filter screen 231. The cleaning plate 232 is a rectangular metal plate, and a cleaning brush 233 is fixedly connected to its upper surface. The brush is made of nylon and is evenly arranged. It can penetrate into the pores of the filter screen 231 to scrape. The movement of the cleaning plate 232 is controlled by the drive component 234.

[0024] Reference Figure 1 and Figure 2The driving component 234 includes a rotating shaft 235 located at the center of the inlet head 23. A water wheel 236 is mounted on the rotating shaft 235. The water wheel 236 has an axial flow structure with spirally arranged blades, which can efficiently convert water flow into rotational kinetic energy. Both ends of the rotating shaft 235 extend into the inner cavity of the side wall of the inlet head 23 and are coaxially fixedly connected to rotating wheels 237. Each rotating wheel 237 has a driven wheel 238 meshing below it. The driven wheel 238 is mounted in the inner wall of the inlet head 23 via bearings. The two driven wheels 238 are coaxially fixedly connected by a reciprocating screw 239. The surface of the reciprocating screw 239 is machined with two threaded grooves with the same pitch but opposite directions. The two ends are connected by a smooth transition curve. The cleaning plate 232 has a matching threaded hole in the middle to achieve a threaded connection.

[0025] Reference Figure 1 and Figure 2 The cleaning plate 232 has limit blocks 2321 at both ends, and the inner walls on both sides of the water inlet head 23 have longitudinally extending limit grooves. The limit blocks 2321 are embedded in the limit grooves to achieve sliding guidance.

[0026] Reference Figure 1 and Figure 2 A support frame 11 is welded above the support plate 1, and a collecting roller 12 is installed on it. Rubber ridges 13 are evenly distributed on the surface of the collecting roller 12 to increase friction and stabilize the winding of the water inlet pipe 21.

[0027] Reference Figure 1 and Figure 2 The support frame 11 has a rotating handle 14 fixed at one end, which is coaxially connected to the collecting roller 12 for easy manual loading and unloading. Lifting rings 15 are welded to all four corners of the support plate 1 for hoisting and transportation.

[0028] The implementation principle of this embodiment of a self-cleaning, anti-clogging groundwater extraction device is as follows: During operation, the centrifugal pump 2 starts, and groundwater flows into the inlet pipe 21 through the inlet head 23. The water flow impacts the blades of the water wheel 236, causing it to drive the rotating shaft 235 to rotate. The rotating wheels 237 at both ends of the rotating shaft 235 rotate accordingly, driving the driven wheel 238 to rotate through gear meshing, which in turn drives the reciprocating screw 239 to rotate. Since the reciprocating screw 239 has a double-threaded design, the cleaning plate 232 makes a reciprocating linear motion along the limiting groove under the action of the thread. During the movement, the brush on the cleaning plate 232 continuously scrapes the lower surface of the filter screen 231, removing the attached mud and impurities to prevent clogging. This cleaning process is entirely driven by the kinetic energy of the water flow and requires no additional electricity. When it is necessary to lift or retrieve the device, turning the handle drives the collecting roller 12 to rotate, orderly winding up the inlet pipe 21. The convex strip 13 prevents slippage. The lifting ring 15 facilitates lifting with a crane. The entire device achieves simultaneous water intake and self-cleaning, significantly improving the reliability of long-term operation.

[0029] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A self-cleaning, anti-clogging groundwater extraction device, comprising a support plate (1), characterized in that, The upper end of the support plate (1) is provided with a centrifugal pump (2). The two ends of the centrifugal pump (2) are respectively connected to an inlet pipe (21) and an outlet pipe (22). The end of the inlet pipe (21) away from the centrifugal pump (2) is connected to an inlet head (23). The inlet head (23) is provided with a filter screen (231) for filtering impurities. Below the filter screen (231) is a cleaning plate (232) for preventing the filter screen (231) from clogging. The cleaning plate (232) is provided with a driving component (234) for driving the cleaning plate (232) to move.

2. The anti-clogging groundwater extraction device with self-cleaning function according to claim 1, characterized in that, The driving component (234) includes a rotating shaft (235), which is located inside the water inlet head (23). A water wheel (236) is provided on the rotating shaft (235). Both ends of the rotating shaft (235) are coaxially fixedly connected to rotating wheels (237). The rotating wheels (237) are located inside the inner wall of the water inlet head (23). A driven wheel (238) is engaged below each of the rotating wheels (237). The driven wheels (238) are all located inside the inner wall of the water inlet head (23). A reciprocating screw (239) is coaxially fixedly connected between the two driven wheels (238). The reciprocating screw (239) is provided with two threaded grooves with the same pitch and opposite directions. The two ends of the two threaded grooves are connected by a transition curve. The cleaning plate (232) is threadedly connected to the reciprocating screw (239).

3. The anti-clogging groundwater extraction device with self-cleaning function according to claim 2, characterized in that, Both ends of the cleaning plate (232) are provided with limiting blocks (2321), and both sides of the water inlet head (23) are provided with limiting grooves. The limiting grooves extend along the setting direction of the reciprocating screw (239). The limiting blocks (2321) are located at the limiting grooves, and the cleaning plate (232) and the water inlet head (23) are slidably connected.

4. The anti-clogging groundwater extraction device with self-cleaning function according to claim 1, characterized in that, The upper surface of the cleaning plate (232) is provided with a cleaning brush (233) for further cleaning the opening of the filter screen (231), and the cleaning brush (233) is evenly distributed.

5. A groundwater extraction device with self-cleaning function and anti-clogging properties according to claim 1, characterized in that, The support plate (1) is provided with a support frame (11), and the support frame (11) is provided with a collection roller (12) for winding up the water inlet pipe (21). The collection roller (12) is provided with a number of protrusions (13), and the protrusions (13) are evenly arranged.

6. A groundwater extraction device with self-cleaning function and anti-clogging properties according to claim 5, characterized in that, One end of the support frame (11) is provided with a rotating handle (14), which is coaxially and fixedly connected to the collecting roller (12).

7. A groundwater extraction device with self-cleaning function and anti-clogging properties according to claim 1, characterized in that, The support plate (1) is provided with lifting rings (15) on all four sides.

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