Modular reverse filtration device

Abstract

The utility model relates to railway drainage technical field especially is involved in a kind of modularized filter device, including water-resisting layer, filter layer and filter assembly, water-resisting layer is arranged in the outer side wall of groove body, and filter layer is arranged in the outside of water-resisting layer, drainage hole is arranged in groove body, and the inside hole mouth position of drainage hole is symmetrically provided with mounting clamping groove, and mounting screw groove is arranged in mounting clamping groove;In the scheme, drainage pipe body is installed and arranged in drainage hole, and filter cover body is threadedly connected in one end of drainage pipe body, carry out drainage work to accumulated water in roadbed soil, avoid soil into drainage hole, to avoid the problem of soil loss;And drainage pipe body is connected with filter cover body, and drainage pipe body is detachably arranged, that is, when filter cover body needs to be replaced, drainage pipe body can be removed, which is convenient for the replacement and maintenance of filter cover body in later period.

Description

Technical Field

[0001] This utility model relates to the field of railway drainage technology, and in particular to a modular reverse filtration device. Background Technology

[0002] A roadbed is the foundation of a track or road surface, and is an earthwork structure formed through excavation or filling. The main function of a roadbed is to provide the necessary conditions for the laying of tracks or roads and the operation of trains or vehicles, and to bear the static and dynamic loads of tracks, locomotives, rolling stock, roads, and traffic loads, while transferring and dispersing the loads deep into the foundation.

[0003] To prevent rainwater from affecting the stability of the railway subgrade structure and the smoothness of the track, drainage ditches are usually set on both sides of the subgrade. Drainage holes are set on the side walls of the drainage ditches. Water in the soil in contact with the outside of the drainage ditches can seep into the ditch through the drainage holes. Under long-term operation, soil is prone to flow into the area where the drainage holes on the outside of the ditch are in contact with the soil. This causes soil to flow into the ditch from the drainage holes, resulting in soil loss, which has a negative impact on the stability of the subgrade.

[0004] Therefore, this utility model proposes a modular reverse filtration device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a modular reverse filtration device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular reverse filtration device, comprising a water-proof layer, a reverse filtration layer, and a filter assembly. The water-proof layer is disposed on the outer wall of the trench body, and the reverse filtration layer is disposed on the outer side of the water-proof layer. A drain hole is disposed in the trench body, and mounting slots are symmetrically disposed at the inner opening positions of the drain hole, and mounting screw grooves are disposed in the mounting slots.

[0007] Preferably, the filter assembly includes a drain pipe body, a mounting plate, mounting screws, connecting threads, an external threaded connecting ring, a filter cover, and auxiliary structures; a mounting plate is symmetrically fixed to the side of the drain pipe body at one end, the mounting plate has mounting holes, and the mounting plate is adapted to and engaged with the mounting slot, and the mounting plate is fixed by the mounting screws.

[0008] Preferably, an auxiliary structure is provided on the inner side of the drain pipe body.

[0009] Preferably, a connecting thread is provided on the inner side of the other end of the drain pipe body, the connecting thread is adapted to the external thread connecting ring for threaded connection, and the external thread connecting ring is fixedly installed at the end of the filter cover.

[0010] Preferably, the drain pipe body is disposed in the drain hole, and the lengths of the drain hole and the drain pipe body are equal.

[0011] Preferably, the auxiliary structure includes a limiting ring and an auxiliary plate layer. The limiting ring is fixedly disposed on the inner side wall of the pipe opening at one end of the drain pipe body, and the auxiliary plate layer is attached to the inner side wall of the drain pipe body.

[0012] Preferably, there are two auxiliary plate layers, which are joined together to form an inner tube, and the tube surface of the inner tube is flush with the inner ring surface of the limiting ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model designs a modular reverse filtration device, which includes a water-proof layer, a reverse filtration layer, and a filter assembly. The water-proof layer is located on the outer wall of the trench body, and the reverse filtration layer is located on the outer side of the water-proof layer. Drainage holes are provided in the trench body, and mounting slots are symmetrically arranged at the inner opening positions of the drainage holes, with mounting screw grooves provided in the mounting slots. In this solution, a drainage pipe is installed in the drainage hole, and a filter cover is threadedly connected to one end of the drainage pipe. This allows for drainage of water accumulated in the roadbed soil, preventing soil from entering the drainage hole and thus avoiding soil loss. Furthermore, the drainage pipe is connected to the filter cover, and the drainage pipe is detachable, meaning that when the filter cover needs to be replaced, the drainage pipe can be removed, facilitating the later replacement and maintenance of the filter cover. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the trench structure connection of this utility model; Figure 2 for Figure 1 Enlarged schematic diagram of the structural connection at point A in the middle; Figure 3 for Figure 1 Enlarged schematic diagram of the structural connection at point B; Figure 4 This is a schematic diagram of the exploded left side of the filter assembly structure of this utility model; Figure 5 for Figure 4 Enlarged schematic diagram of the structural connection at point C; Figure 6 This is a schematic diagram of the exploded connection of the filter assembly structure of this utility model.

[0015] In the diagram: 1. Trench body; 2. Waterproof layer; 3. Filter layer; 4. Drainage hole; 41. Mounting slot; 42. Mounting screw slot; 501. Drainage pipe body; 502. Mounting plate; 503. Mounting screw; 504. Connecting thread; 505. External thread connecting ring; 506. Filter cover; 601. Limiting ring; 602. Auxiliary plate layer. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figures 1 to 6 This utility model provides a technical solution: a modular reverse filtration device, including a water-proof layer 2, a reverse filtration layer 3 and a filter assembly. The water-proof layer 2 is disposed on the outer wall of the trench body 1, and the reverse filtration layer 3 is disposed on the outer side of the water-proof layer 2. A drain hole 4 is disposed in the trench body 1, and a mounting slot 41 is symmetrically disposed at the inner opening position of the drain hole 4. A mounting screw groove 42 is disposed in the mounting slot 41.

[0018] A drainage pipe body 501 is installed in the drainage hole 4, and a filter cover 506 is threadedly connected to one end of the drainage pipe body 501. This facilitates drainage of water accumulated in the roadbed soil, preventing soil from entering the drainage hole 4 and thus avoiding soil erosion. The drainage pipe body 501 is connected to the filter cover 506, and the drainage pipe body 501 is detachable; when the filter cover 506 needs to be replaced, the drainage pipe body 501 can be removed, facilitating future replacement and maintenance. The filter assembly includes the drainage pipe body 501, mounting plate 502, mounting screws 503, connecting threads 504, external threaded connecting ring 505, filter cover 506, and auxiliary structures. A mounting bracket is symmetrically fixed to the side of the pipe opening at one end of the drainage pipe body 501. Mounting plate 502 has mounting holes and is fitted into mounting slot 41. Mounting plate 502 is fixed by mounting screws 503. An auxiliary structure is provided on the inner side of drain pipe body 501. A connecting thread 504 is provided on the inner side of the other end of drain pipe body 501. The connecting thread 504 is fitted into an external threaded connecting ring 505 and is threadedly connected. The external threaded connecting ring 505 is fixedly installed at the end of the cover opening of filter cover 506. Drain pipe body 501 is installed in drain hole 4, and the length of drain hole 4 and drain pipe body 501 are equal. After drain pipe body 501 is removed from drain hole 4, filter cover 506 can be disassembled separately by rotating filter cover 506 to release its threaded connection with drain pipe body 501.

[0019] Water flows out from the drain pipe 501. Over time, impurities and dirt accumulate on the inner wall of the drain pipe 501, requiring cleaning. To improve cleaning convenience, this design includes an auxiliary structure on the inner side of the drain pipe 501, comprising a limiting ring 601 and an auxiliary adhesive layer 602. The limiting ring 601 is fixedly installed on the inner wall of the pipe opening at one end of the drain pipe 501, and the auxiliary adhesive layer 602 is attached to the inner wall of the drain pipe 501. There are two auxiliary plates 602. The two auxiliary plates 602 are joined together to form an inner tube, and the tube surface of the inner tube is flush with the inner ring surface of the limiting ring 601. After the filter cover 506 is removed, the two auxiliary plates 602 placed inside the drain pipe 501 are taken out. After taking them out, the inner walls of the auxiliary plates 602 are cleaned. The symmetrically separated auxiliary plates 602 are intended to facilitate the cleaning of their inner walls and facilitate the cleaning operation of the staff.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular reverse filtration device, characterized in that: It includes a water-proof layer (2), a reverse filter layer (3) and a filter assembly. The water-proof layer (2) is set on the outer wall of the trench body (1), and the reverse filter layer (3) is set on the outer side of the water-proof layer (2). A drain hole (4) is set in the trench body (1). A mounting slot (41) is symmetrically set at the inner opening position of the drain hole (4). A mounting screw groove (42) is set in the mounting slot (41). The filter assembly includes a drain pipe body (501), a mounting plate (502), mounting screws (503), connecting threads (504), an external threaded connecting ring (505), a filter cover (506), and auxiliary structures; a mounting plate (502) is symmetrically fixed on the side of the drain pipe body (501) at one end, and a mounting hole is provided in the mounting plate (502), and the mounting plate (502) is adapted to and engaged with the mounting slot (41), and the mounting plate (502) is fixed by the mounting screws (503); A connecting thread (504) is provided on the inner side of the other end of the drain pipe (501). The connecting thread (504) is adapted to the external thread connecting ring (505) for threaded connection. The external thread connecting ring (505) is fixedly installed at the end of the filter cover (506).

2. The modular reverse filtration device according to claim 1, characterized in that: An auxiliary structure is provided on the inner side of the drain pipe body (501).

3. The modular reverse filtration device according to claim 1, characterized in that: The drain pipe body (501) is set in the drain hole (4), and the lengths of the drain hole (4) and the drain pipe body (501) are equal.

4. The modular reverse filtration device according to claim 2, characterized in that: The auxiliary structure includes a limiting ring (601) and an auxiliary plate layer (602). The limiting ring (601) is fixedly installed on the inner side wall of the pipe opening at one end of the drain pipe body (501), and the auxiliary plate layer (602) is attached to the inner side wall of the drain pipe body (501).

5. The modular reverse filtration device according to claim 4, characterized in that: Two auxiliary plate layers (602) are provided, and the two auxiliary plate layers (602) are joined together to form an inner tube, and the tube surface of the inner tube is flush with the inner ring surface of the limiting ring (601).

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