Anti-blocking device for underground drainage hole

Abstract

The utility model discloses an underground drainage hole anti-blocking device, and relates to the technical field of underground mines, the underground drainage hole anti-blocking device comprises an underground outer body, the underground outer body is formed by pouring concrete, a filter cavity is arranged in the underground outer body, a primary filter device is arranged at the upper end of the filter cavity, and a secondary filter device is arranged at the lower end of the primary filter device. The lower end of the first-stage filtering device is provided with a second-stage filtering device, the lower end of the second-stage filtering device is provided with a third-stage filtering device, the first-stage filtering device comprises a filtering plate, and the surface of the filtering plate is provided with filtering net holes which are through up and down. The problems that drainage difficulty on site is large due to production water of tunneling construction and rock fissure water, drainage is conducted mainly through digging ditches at present, but the work is time-consuming and labor-consuming, especially long-distance roadways are large in maintenance difficulty, civilized production in a production area is poor, underground auxiliary layering drainage is difficult, later maintenance is difficult, and cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground mines, in particular to an underground drain hole anti-blocking device. Background Technique

[0002] Underground mine drainage refers to the general term for underground mine drainage methods and drainage facilities. Compared with open-pit mine drainage, its characteristic is that inundation is not allowed underground. Except for some hillside ore deposits that can adopt gravity drainage, deep underground mines all adopt fixed pump stations for mechanical drainage;

[0003] For example, the Chinese authorized patent with the publication number CN216767468U (a sleeve device for protecting drain holes in underground mines): includes a sleeve, a suspension cross brace, a short cross brace and a mesh; the sleeve is sleeved on the drain hole; the end of the sleeve on the water-facing side is provided with four holes; any two spaced-apart holes are a group, and the two holes in each group are located in the same radial direction of the sleeve; the two radial directions where the two groups of holes are located form a 90° angle; both ends of the suspension cross brace are fixed by a group of holes; both ends of the short cross brace are fixed by the other group of holes; the mesh is located at the end of the sleeve and is fixed by the suspension cross brace and the short cross brace. The utility model protects the drain holes in the chamber through the suspension steel cross brace, the short steel cross brace, the sleeve and the mesh, avoids floating stones from falling and damaging and blocking the drain holes, protects the drain holes in the cross-cut, avoids the drain holes from being damaged and blocked due to the rolling of equipment, and enables the underground drain work in the mine to proceed smoothly.

[0004] However, there are many sub-layers in existing underground mines. The production water and rock fissure water during tunneling construction make the on-site drainage difficult. Currently, drainage is mainly carried out by excavating drainage ditches, but this work is time-consuming and laborious. Especially, the maintenance of long-distance roadways is difficult, resulting in poor civilized production in the production area, difficult drainage in the underground sub-layers, difficult subsequent maintenance, and high costs; Therefore, it does not meet the existing needs, and for this reason, we propose an underground drain hole anti-blocking device. Content of the Utility Model

[0005] The purpose of the utility model is to provide an underground drain hole anti-blocking device to solve the problems in the above background technique that there are many sub-layers in existing underground mines, the production water and rock fissure water during tunneling construction make the on-site drainage difficult, currently, drainage is mainly carried out by excavating drainage ditches, but this work is time-consuming and laborious, especially, the maintenance of long-distance roadways is difficult, resulting in poor civilized production in the production area, difficult drainage in the underground sub-layers, difficult subsequent maintenance, and high costs.

[0006] To achieve the above object, the utility model provides the following technical solutions: An underground water drainage hole anti-blocking device, comprising: an underground outer body, the underground outer body is formed by concrete pouring, a filtering cavity is arranged inside the underground outer body, a primary filtering device is arranged at the upper end of the filtering cavity, a secondary filtering device is arranged at the lower end of the primary filtering device, and a tertiary filtering device is arranged at the lower end of the secondary filtering device.

[0007] Preferably, the primary filtering device includes a filter plate, and the surface of the filter plate is provided with through filter holes in the up and down direction, and a plurality of filter holes are provided.

[0008] Preferably, the specification of the filter plate is 400mm * 400mm, and the specification of the filter fineness of the filter hole is 30mm * 30mm.

[0009] Preferably, the secondary filtering device includes a support ring seat, and the support ring seat is circular when surrounded in a circle. The bottom end of the support ring seat is provided with an L-shaped support seat. Filter holes are arranged on the outer surface of the support ring seat. The filter holes are in an elliptical star column shape, and a plurality of filter holes are arranged in a plum blossom shape.

[0010] Preferably, the tertiary filtering device includes a thin column and a screen, and the screen is welded and fixed to the thin column by surrounding the thin column in a circle. The mesh specification of the screen is 6mm * 6mm.

[0011] Preferably, a connection opening is arranged at the center of the lower surface of the underground outer body, a water drainage pipe is arranged inside the connection opening, and a water drainage hole communicating with the filtering cavity is arranged inside the water drainage pipe.

[0012] Preferably, a limit groove is arranged on the upper surface of the underground outer body, and the filter plate is placed in the limit groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By arranging the primary filtering device, secondary filtering device and tertiary filtering device inside the underground outer body, the water passes through the filter plate for the first time from top to bottom to prevent larger gravels and the like from entering the inside of the filtering cavity, and then passes through the filter holes for re-filtering to further filter sundries, and finally passes through the screen to filter smaller sundries. Through three-stage filtering by the primary filtering device, secondary filtering device and tertiary filtering device, the anti-blocking effect is finally achieved, solving the problems that there are many sub-layers in the existing underground mines, the production water and rock fissure water in tunneling construction make the on-site drainage difficult, at present, mainly through excavating drainage ditches for drainage, but this work is time-consuming and laborious, especially the maintenance of long-distance roadways is difficult, resulting in poor civilized production in the production area, and leading to difficult drainage, difficult later maintenance and high cost in the underground sub-layers.

[0015] 2. By providing a limiting groove on the upper surface of the underground outer body, the filter plate of the primary filtration device is placed on the limiting groove, thus achieving a supporting effect, facilitating quick disassembly and installation. Moreover, due to the height difference between the bottom surface of the limiting groove and the underground outer body, an installation space is formed, thereby achieving a limiting and anti-offset effect on the filter plate and improving the fixing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the overall internal cross-sectional structure of the present utility model;

[0018] Figure 3 is a partial enlarged view of part A of the present utility model;

[0019] In the figure: 1. Underground outer body; 2. Connection opening; 3. Primary filtration device; 4. Secondary filtration device; 5. Tertiary filtration device; 6. Screen; 7. Filter hole; 8. Filter plate; 9. Thin column; 10. Support ring seat; 11. Filtration chamber; 12. Drainage pipe; 13. Limiting groove; 14. Filter mesh hole; 15. Drainage hole; 16. Support seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Please refer to Figures 1-3 , an embodiment provided by the present utility model: An underground drainage hole anti-blocking device, comprising: an underground outer body 1, the underground outer body 1 is formed by concrete casting, a filtration chamber 11 is provided inside the underground outer body 1, a primary filtration device 3 is provided at the upper end of the filtration chamber 11, a secondary filtration device 4 is provided at the lower end of the primary filtration device 3, a tertiary filtration device 5 is provided at the lower end of the secondary filtration device 4, the primary filtration device 3 includes a filter plate 8, the surface of the filter plate 8 is provided with filter mesh holes 14 penetrating up and down, and a plurality of filter mesh holes 14 are provided, the secondary filtration device 4 includes a support ring seat 10, and the support ring seat 10 is circular in a circumferential arrangement, the bottom end of the support ring seat 10 is provided with a support seat 16 in an L shape, the outer surface of the support ring seat 10 is provided with filter holes 7, the filter holes 7 are in an elliptical star column shape, and a plurality of filter holes 7 are arranged in a plum blossom shape, the tertiary filtration device 5 includes a thin column 9 and a screen 6, and the screen 6 is welded and fixed to the thin column 9 in a circumferential arrangement around the thin column 9.

[0022] Water flows from top to bottom and undergoes the first filtration through the filter plate 8. The filter mesh holes 14 prevent larger gravel and the like from entering the interior of the filtration chamber 11. Then, it undergoes secondary filtration through the filter holes 7 on the surface of the support ring seat 10 to further filter out debris. Finally, smaller debris is filtered through the screen 6. The water is discharged from the water discharge holes 15 of the water discharge pipe 12, completing the underground water discharge operation. Three-stage filtration is carried out through the primary filtration device 3, the secondary filtration device 4, and the tertiary filtration device 5, ultimately playing a role in preventing blockage.

[0023] For further introduction, the specification of the filter plate 8 is 400mm * 400mm, the mesh size specification of the filter mesh holes 14 is 30mm * 30mm, and the mesh size specification of the screen 6 is 6mm * 6mm.

[0024] Please refer to Figure 2 , at the center of the lower surface of the underground outer body 1, there is a connection opening 2. Inside the connection opening 2, there is a water discharge pipe 12. Inside the water discharge pipe 12, there are water discharge holes 15 that communicate with the filtration chamber 11. The water is discharged from the water discharge holes 15 of the water discharge pipe 12, completing the underground water discharge operation.

[0025] Please refer to Figure 2 、 3 , on the upper surface of the underground outer body 1, there is a limit groove 13, and the filter plate 8 of the primary filtration device 3 is placed on the limit groove 13, thus achieving a supporting effect, avoiding position deviation, and improving stability.

[0026] Working principle: During use, the support ring seat 10 of the secondary filtration device is placed inside the filtration chamber 11, and the central channel of the support seat 16 communicates with the connection opening 2. The support seat 16 stably supports the support ring seat 10. The filter plate 8 of the primary filtration device 3 is placed on the limit groove 13, thus achieving a supporting effect. The thin column 9 and the filter plate 8 are welded and fixed. When installing the filter plate 8, the lower end of the thin column 9 is inserted into the connection opening 2. Water flows from top to bottom and undergoes the first filtration through the filter plate 8. The filter mesh holes 14 prevent larger gravel and the like from entering the interior of the filtration chamber 11. Then, it undergoes secondary filtration through the filter holes 7 on the surface of the support ring seat 10 to further filter out debris. Finally, smaller debris is filtered through the screen 6. The water is discharged from the water discharge holes 15 of the water discharge pipe 12, completing the underground water discharge operation. Three-stage filtration is carried out through the primary filtration device 3, the secondary filtration device 4, and the tertiary filtration device 5, ultimately playing a role in preventing blockage.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights involved.

Claims

1. An underground drainage hole anti-blocking device, including an underground outer body (1), and the underground outer body (1) is formed by concrete casting. It is characterized in that: Inside the downhole outer body (1), a filtering cavity (11) is provided. At the upper end of the filtering cavity (11), a primary filtering device (3) is provided. At the lower end of the primary filtering device (3), a secondary filtering device (4) is provided. At the lower end of the secondary filtering device (4), a tertiary filtering device (5) is provided.

2. The anti-blocking device for underground drainage holes according to claim 1, characterized in that: The primary filtering device (3) includes a filter plate (8). On the surface of the filter plate (8), through filtering holes (14) are provided vertically and horizontally, and a number of filtering holes (14) are provided.

3. The downhole water drainage hole anti-blocking device according to claim 2, characterized in that: The specification of the filter plate (8) is 400mm * 400mm, and the specification of the mesh size of the filtering holes (14) is 30mm * 30mm.

4. The anti-blocking device for underground drainage holes according to claim 1, characterized in that: The secondary filtering device (4) includes a support ring seat (10), and the support ring seat (10) is circular when surrounded in a circle. At the bottom end of the support ring seat (10), a support seat (16) is L-shaped. Filtering holes (7) are provided on the outer surface of the support ring seat (10). The filtering holes (7) are elliptical star-shaped columns, and a number of filtering holes (7) are arranged in a plum blossom shape.

5. The anti-blocking device for underground drainage holes according to claim 1, characterized in that: The tertiary filtering device (5) includes a thin column (9) and a screen (6), and the screen (6) is welded and fixed to the thin column (9) by surrounding the thin column (9) in a circle. The mesh size specification of the screen (6) is 6mm * 6mm.

6. The anti-blocking device for underground drainage holes according to claim 1, wherein: At the center of the lower surface of the downhole outer body (1), a connection opening (2) is provided. Inside the connection opening (2), a drain pipe (12) is provided. Inside the drain pipe (12), drain holes (15) communicating with the filtering cavity (11) are provided.

7. The anti-blocking device for underground drainage holes according to claim 2, characterized in that: On the upper surface of the downhole outer body (1), a limit groove (13) is provided, and the filter plate (8) is placed on the limit groove (13).

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