A type of well dewatering filter pipe

Abstract

This utility model discloses a well dewatering filter pipe in the field of well filtration technology, including a filter pipe and filter plates. The filter pipe and multiple filter plates are assembled into a complete circular pipe, which optimizes the structure of the network pipe and makes the network pipe a detachable structure, which is convenient for pipe extraction. The flexible filter plates are supported by the filter pipe, while the filter plates perform the filtration effect. The two functions complement each other, each exerting its own advantages and compensating for each other's disadvantages, forming a complete filter network pipe. Moreover, when the blockage is not serious, it is not necessary to remove the entire network pipe, but only the filter plate with the slower water flow needs to be removed. Most importantly, the filter plates of this device have limiting side grooves to restrict the deformation of the filter plates. In addition, the filter plates are designed with flat mesh plates and inclined filter screens to form a stepped structure. This folded structure has higher strength, which not only effectively avoids blockage, but also strengthens the overall strength of the filter plates.

Description

Technical Field

[0001] This utility model relates to the field of well water filtration technology, and in particular to a well dewatering filter pipe. Background Technology

[0002] A well is a water intake structure with a small diameter and a relatively large depth, used to extract deep or shallow groundwater. When a well is drilled into a confined aquifer, and the water head is above ground level, it is also called an artesian well. A well is a vertically installed tubular structure for extracting or protecting groundwater. It is a water supply and drainage facility used in industrial and agricultural production, urban areas, transportation, and national defense.

[0003] A well consists of a wellhead, well casing, filter pipe, and sedimentation pipe. The wellhead is sealed with an impermeable material, and the area around the wellhead is paved with crushed stone and then filled with concrete. The well casing can be made of steel, cast iron, reinforced concrete, or plastic pipe. The well casing and filter are connected to form a tubular column, which is installed vertically in the wellbore. Screened gravel is filled into the aquifer section within the annular gap between the tubular column and the well wall. Above the gravel, in the non-aquifer section or the section to be sealed, clay, clay balls, or cement are used as a sealing material. This filters out external impurities and allows for the removal of pure water. The purpose of this type of rainwater well is to collect and drain rainwater while intercepting impurities and soil, acting not only as a filter but also as a trapping agent for soil.

[0004] The filtration device on a conventional manhole is basically a mesh pipe with low support strength. Moreover, these manholes are used for a long time, and the filter screen on the pipe is prone to clogging during long-term use. The clogged pipe will slow down the filtration speed. When cleaning this conventional filter pipe, the entire filter screen needs to be removed, then rinsed and brushed. This type of filter screen has mesh holes, and when the filter screen is stretched, it relies entirely on the strength of the meridians between the mesh holes for support. The filter screen is less hard than steel pipe and more flexible. When removing this type of filter screen pipe, it needs to be pulled upwards from the ground, which makes the filter screen easy to stretch and deform, and it is easy to twist. When reinserting it, the stress concentration point is prone to deformation. Any deformation or twisting will cause the top or bottom to not be properly aligned with the manhole, which will result in gaps in the manhole filtration, that is, incomplete filtration, and impurities can easily enter the manhole from the stretched and deformed points.

[0005] Based on this, this utility model designs a well dewatering filter pipe to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a well dewatering filter pipe that optimizes the structure of the network pipe, making it detachable for easy extraction. The flexible filter plate is supported by the filter pipe, while the filter plate performs the filtering function. The two functions complement each other, each leveraging its own advantages and compensating for the other's disadvantages, forming a complete filter network pipe. Furthermore, when clogging is not severe, it is not necessary to remove the entire network pipe; only the filter plate with the slower water flow needs to be removed. Most importantly, the filter plate in this device has a limiting side groove to restrict deformation. The filter plate is also designed with flat mesh and inclined filter mesh, forming a stepped structure. This folded structure provides higher strength, effectively preventing clogging and reinforcing the overall strength of the filter plate.

[0007] This utility model is implemented as follows: a well dewatering filter pipe, comprising:

[0008] Diversion well, filter pipe and filter plate;

[0009] The diversion well is a vertical shaft excavated downwards from the base surface;

[0010] The filter pipe is a straight pipe with openings at both the top and bottom. Multiple mesh slots are opened on the side wall of the filter pipe. The multiple mesh slots are evenly distributed on the side wall of the filter pipe and penetrate the side wall of the filter pipe.

[0011] The mesh rack is a U-shaped groove with an opening at the top, and each mesh rack has an opening at the top end face of the filter pipe;

[0012] The filter plate is an arc-shaped long plate, and a filter plate is installed in each of the mesh slots. The filter plates are stably inserted into the mesh slots and can be separated. The water filter pipe is spliced ​​together by the filter plates to form a complete closed circular pipe.

[0013] The filter plate is provided with multiple flat screen plates, and each flat screen plate is provided with an inclined screen at its bottom. The multiple flat screen plates and inclined screens are arranged in a stepped structure with intervals between them. Furthermore, a flat screen plate and an inclined screen are combined to form a stepped edge, and the adjacent stepped edges do not contact each other.

[0014] The circular tube consisting of the filter pipe and the filter plate is vertically inserted into the diversion well, and the gap between the filter pipe and the diversion well forms a circular hole, which is filled with a gravel layer.

[0015] Furthermore, the minimum particle diameter of the gravel layer is greater than the mesh diameter of the flat screen and the inclined screen.

[0016] Furthermore, the flat screen is set horizontally, and the lower end of the inclined filter screen is set inward.

[0017] The flat screen and the inclined screen are connected at an angle, and the cross-section of the flat screen and the inclined screen is triangular. The angle s formed by the flat screen and the inclined screen is between 45° and 80°, with 60° being the optimal angle.

[0018] The flat mesh plate is a steel mesh plate, and the inclined filter screen is a steel wire mesh. Both the flat mesh plate and the inclined filter screen are fixedly welded to the filter plate.

[0019] The height d between the stepped edges formed by the flat screen and the inclined filter screen is 1-5cm.

[0020] Furthermore, the bottom of the mesh rack groove is recessed downward to form a bottom slot, and both the left and right side walls of the mesh rack groove are recessed inward to form a vertical side slot. The top of both the bottom slot and the side slot are open.

[0021] Furthermore, a bottom rib is provided at the bottom of the filter plate, and a side tenon is provided on each of the vertical left and right side walls of the filter plate.

[0022] The side tenon is vertically slidably installed in the side slot, and the bottom edge can be pulled out and vertically inserted into the bottom slot.

[0023] The filter plates are tightly inserted through the mutual cooperation of side slots, bottom slots, bottom ribs, and side tenons.

[0024] The beneficial effects of this utility model are: 1. This utility model adds a filter pipe and filter plate to form a complete mesh pipe. With this structure, the filter plate filters and intercepts, while the filter pipe has a mesh groove on its side wall, forming a skeleton in the middle of the filter pipe. This increases the structural strength of the mesh pipe composed of multiple filter plates, so that the overall structure of the filter pipe will not be significantly reduced. At the same time, the filter plate is not a separate flexible mesh, but has an outer frame, which can further increase the strength of the filter plate itself.

[0025] 2. The filter screen on the filter plate of this device is composed of multiple inclined filter screens and flat screen plates, forming a stepped structure. The sides of the stepped edges formed by the inclined filter screens and flat screen plates are triangular, which enhances the structural stability. At the same time, the stepped edges formed by each inclined filter screen and flat screen plate are independent and discontinuous, making each filter screen section an independent stepped structure. This makes each section of the stepped edge structure more stable, further strengthening the overall structural strength of the filter plate. Moreover, the entire filter plate structure of this device is an individual unit. Even if the filter plate is deformed, the inclined filter screens and flat screen plates are welded to the filter plate on all four sides, and no gaps will be formed between the inclined filter screens and flat screen plates and the filter plate due to deformation, effectively avoiding the situation where filtration is lost due to filter screen deformation.

[0026] 3. The filter plates of this device are reinforced with side tenons and bottom ribs, making the assembly of the filter plates with the mesh groove more tight. The mesh groove also restricts the filter plates, making the filter plate structure more robust. Furthermore, the filter plates can be easily pulled out individually for cleaning, and can also be pulled out together with the water filter pipe for cleaning, making this device more flexible in use. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram showing the structural relationship between the filter plate and the mesh groove of this utility model.

[0030] Figure 3 A top view of the filter plate of this utility model mounted on the mesh groove;

[0031] Figure 4 This is a top view of the mesh trough structure on the filter pipe of this utility model;

[0032] Figure 5 This is a schematic diagram of the front structure of a single filter plate of this utility model;

[0033] Figure 6 This is a schematic diagram of the mesh groove structure on the filter pipe of this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1-Diversion well, 11-Gravel layer, 2-Filter pipe, 21-Frame groove, 22-Bottom slot, 23-Side slot, 3-Filter plate, 31-Inclined filter screen, 32-Flat screen plate, 33-Side tenon strip, 34-Bottom rib strip. Detailed Implementation

[0036] Please see Figures 1 to 6 As shown, this utility model provides a well dewatering filter pipe. To better understand the above technical solution, the following will describe the above technical solution in detail with reference to the accompanying drawings and specific embodiments.

[0037] In a specific embodiment of the technical solution of this utility model:

[0038] Includes diversion well 1, filter pipe 2, and filter plate 3;

[0039] Diversion well 1 is a vertical shaft excavated downwards from the base surface;

[0040] The filter pipe 2 is a straight pipe with openings at both the top and bottom. Multiple mesh grooves 21 are opened on the side wall of the filter pipe 2. The multiple mesh grooves 21 are evenly distributed on the side wall of the filter pipe 2, and the mesh grooves 21 penetrate the side wall of the filter pipe 2.

[0041] The mesh support trough 21 is a U-shaped trough with an opening at the top, and each mesh support trough 21 has an opening at the top end face of the filter pipe 2;

[0042] The filter plate 3 is an arc-shaped long plate. Each mesh slot 21 has a filter plate 3 installed in it. The filter plate 3 can be stably inserted into the mesh slot 21. The water filter pipe 2 is spliced ​​into a complete closed circular pipe through the filter plates 3.

[0043] Multiple flat screen plates 32 are provided on the filter plate 3. Each flat screen plate 32 has an inclined filter 31 at its bottom. The multiple flat screen plates 32 and inclined filter 31 are arranged alternately to form a stepped structure. Furthermore, a flat screen plate 32 and an inclined filter 31 are combined to form a stepped edge. The upper and lower adjacent stepped edges do not contact each other.

[0044] The horizontally set flat screen 32 can effectively receive downward-flowing impurities and particles, while the lower end of the inclined screen 31 is set inward, so that both the inclined screen 31 and the pump are within the coverage area of ​​the flat screen 32. The particles are blocked by the flat screen 32, and even if the flat screen 32 is completely blocked and sealed, the inclined screen 31 can still filter water, effectively ensuring that the overall filtration effect of the water filter pipe 2 is not completely blocked, and extending the cleaning time of the entire water filter pipe 2.

[0045] The flat screen 32 and the inclined filter screen 31 are connected at an angle, and the cross-section of the flat screen 32 and the inclined filter screen 31 is triangular. The angle s formed by the flat screen 32 and the inclined filter screen 31 is between 45° and 80°, with 60° being the optimal angle. This angle and structure make the stepped edge structure formed by a flat screen 32 and an inclined filter screen 31 more stable. The triangular cross-section supports the vertical top support, while the flat screen 32 and the inclined filter screen 31 are both arc-shaped in the horizontal direction, forming an outward top support convex force. This makes the stepped edge structure composed of a single flat screen 32 and an inclined filter screen 31 more stable, forming an outward convex support force, effectively preventing filter screen deformation.

[0046] The flat mesh plate 32 is a steel mesh plate, and the inclined filter screen 31 is a steel wire mesh. Both the flat mesh plate 32 and the inclined filter screen 31 are fixedly welded to the filter plate 3.

[0047] The height d between the stepped edges formed by the flat screen 32 and the inclined filter screen 31 is 1-5cm.

[0048] This interval height d extends to the left and right, forming a fence-like frame structure with the side tenon strip 33. At the same time, the upper and lower ends of the filter plate 3 are not equipped with filter screens, but are a complete frame. This makes the entire filter plate 3 form a fence-like frame structure with closed sides and multiple stepped edges in the middle. The gaps in the middle of the fence are filled with flat mesh plate 32 and inclined filter screen 31. This makes the structure of the filter plate 3 much stronger than a structure that is entirely mesh. Moreover, the coverage angle of a single filter plate 3 is small, resulting in better stability and stronger pressure resistance.

[0049] The circular pipe consisting of the filter pipe 2 and the filter plate 3 is vertically inserted into the guide well 1, and the gap between the filter pipe 2 and the guide well 1 forms a circular hole, which is filled with a gravel layer 11. The minimum particle diameter of the gravel layer 11 is larger than the mesh diameter of the flat screen plate 32 and the inclined filter screen 31.

[0050] The bottom of the mesh rack 21 is recessed downward to form a bottom slot 22. The left and right side walls of the mesh rack 21 are recessed inward to form a vertical side slot 23. The top of the bottom slot 22 and the side slot 23 are open.

[0051] The bottom of the filter plate 3 has a bottom ridge strip 34 that protrudes downwards, and the left and right side walls of the filter plate 3 each have a side tenon strip 33 that protrudes outwards.

[0052] The side tenon 33 is vertically slidably installed in the side slot 23, and the bottom edge 34 can be pulled out and vertically inserted into the bottom slot 22.

[0053] The filter plate 3 is tightly inserted through the mutual cooperation of the side slot 23, bottom slot 22, bottom rib 34 and side tenon 33.

[0054] Rainwater or overflow water from the ground seeps downwards and is filtered through the flat mesh plate 32 and inclined mesh 31 of the filter plate 3. Clean water enters the water filter pipe 2, while impurities remain on the outside of the filter plate 3.

[0055] It should be noted that:

[0056] 1. Conventional well filters consist of a single layer of wire mesh, or sometimes steel mesh panels. Wire mesh has relatively low structural strength, while steel mesh panels have slightly higher strength, but both are easily deformed. The mesh panels form a complete circular tube to block external gravel and impurities, purifying the water inside the well. This circular tube structure, being relatively long and forming a complete circle, lacks radial support around its perimeter, making it prone to deformation under pressure. This type of circular tube, relying entirely on material hardness, is easily deformed during upward pulling and downward insertion into the well. The difference with this device is that it is not a circular tube structure, but rather an arc structure, and each arc-shaped filter plate 3 has its own support. The supporting frame, namely the outward side tenon strips 33 and the closed frames on the upper and lower sides, can support the entire filter plate 3. At the same time, the stepped edges formed by the inclined filter screen 31 and the flat screen plate 32 are not continuous, but the interval between the flat plates is increased, which reinforces the upper and lower stepped edge filter screens, thereby improving the structural strength of the entire filter plate 3. Furthermore, the filter plate 3 with a smaller arc is not a complete circle, and it can withstand higher support strength. In addition, the bottom slot 22 and side slot 23 on the inner wall of the frame groove 21 can restrict the position and support relationship of the filter plate 3, effectively control the structure of the filter plate 3, and further increase the structural strength of the entire mesh pipe formed by the filter plate 3 and the filter pipe 3.

[0057] 2. Conventional filter tubes are complete circular tubes, and can only be removed as a whole for cleaning. This device allows individual filter plates 3 to be pulled out for cleaning, which is suitable when plastic sheets or fine particles are stuck in one side of the filter plate 3. In this case, the filter plate 3 can be removed and cleaned one side at a time, making the operation more flexible. When the blockage of the entire filter tube 2 is obvious and evenly distributed, the entire filter tube 2 can be pulled out for comprehensive cleaning.

[0058] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A well dewatering filter pipe, characterized in that, include: Diversion well (1), filter pipe (2) and filter plate (3); The diversion well (1) is a vertical shaft excavated downward from the base surface; The filter pipe (2) is a straight pipe with openings at both the top and bottom. Multiple mesh grooves (21) are opened on the side wall of the filter pipe (2). The multiple mesh grooves (21) are evenly distributed on the side wall of the filter pipe (2), and the mesh grooves (21) penetrate the side wall of the filter pipe (2). The mesh trough (21) is a U-shaped trough with an open top, and each mesh trough (21) has an opening on the top end face of the filter pipe (2); The filter plate (3) is an arc-shaped long plate. Each of the mesh slots (21) is fitted with a filter plate (3). The filter plate (3) can be stably inserted into the mesh slot (21) and the water filter pipe (2) is spliced ​​into a complete closed circular pipe through the filter plates (3). The filter plate (3) is provided with multiple flat mesh plates (32), and each flat mesh plate (32) is provided with an inclined filter (31) at its bottom. The multiple flat mesh plates (32) and inclined filter (31) are arranged in a stepped structure with intervals between them. Furthermore, a flat mesh plate (32) and an inclined filter (31) are combined to form a stepped edge, and the adjacent stepped edges do not contact each other. The circular tube consisting of the filter pipe (2) and the filter plate (3) is vertically inserted into the diversion well (1), and the gap between the filter pipe (2) and the diversion well (1) forms a circular hole, which is filled with a gravel layer (11).

2. The filter pipe of a pipe well dewatering according to claim 1, characterized in that: The minimum particle diameter of the gravel layer (11) is greater than the mesh diameter of the flat screen (32) and the inclined screen (31).

3. The filter pipe of a pipe well dewatering according to claim 1, characterized in that: The flat screen (32) is set horizontally, and the lower end of the inclined screen (31) is set inward. The flat screen (32) and the inclined screen (31) are connected at an angle, and the cross-section of the flat screen (32) and the inclined screen (31) is triangular. The angle s formed by the flat screen (32) and the inclined screen (31) is between 45° and 80°. The flat mesh plate (32) is a steel mesh plate, and the inclined filter screen (31) is a steel wire mesh. Both the flat mesh plate (32) and the inclined filter screen (31) are fixedly welded to the filter plate (3). The height d between the stepped edges formed by the flat screen (32) and the inclined screen (31) is 1-5 cm.

4. The filter pipe of a pipe well dewatering according to claim 1, characterized in that: The bottom of the mesh rack groove (21) is recessed downward to form a bottom slot (22), and the left and right side walls of the mesh rack groove (21) are recessed inward to form a vertical side slot (23). The top of the bottom slot (22) and the side slot (23) are both open.

5. A filter pipe for a well according to claim 4, characterized in that: The bottom of the filter plate (3) is provided with a bottom rib (34) protruding downwards, and the left and right side walls of the filter plate (3) each have a side tenon (33) protruding outwards; The side tenon (33) is vertically slidable in the side slot (23), and the bottom rib (34) can be pulled out and vertically inserted into the bottom slot (22); The filter plate (3) is tightly inserted through the mutual cooperation of the side slot (23), bottom slot (22), bottom rib (34) and side tenon (33).

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