Tunnel construction drainage device and drainage method thereof

Abstract

The application relates to the technical field of tunnel drainage, and provides a tunnel construction drainage device and a drainage method thereof. The drainage device comprises a treatment box, a cover plate arranged at the top of the treatment box, a connecting pump pipe connected to the bottom of the treatment box, a water pumping pipe connected to the cover plate, fixing frames arranged at the two sides of the treatment box, a transmission unit arranged on the fixing frames, a rotating unit arranged on the side wall of the treatment box and connected to the transmission unit, a frame arranged on the inner wall of the treatment box, a filter plate arranged on the frame, the filter plate being connected to the rotating unit and capable of being driven to rotate by the rotating unit, filter holes and blocking strips capable of separating different impurities in water being arranged on the filter plate, a closing assembly arranged at the top of the treatment box to temporarily close a water inlet when the filter plate rotates, the rotating direction of the filter plate being changed through cooperation of the transmission unit and the rotating unit, and the filter holes and the blocking strips being matched to separate different impurities in water, so that the labor intensity of workers in later-stage impurity treatment is reduced, and the efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel drainage technology, specifically to a tunnel construction drainage device and its drainage method. Background Technology

[0002] In tunnels where groundwater is discharged, drainage ditches must be excavated. When excavating downhill, pumps with a capacity greater than 20% of the water inflow should be installed to drain the water. The pumping equipment should be installed on one side of the pilot tunnel or through a separate side tunnel and isolated from the tunnel by a fence.

[0003] Currently, after the tunnel drainage ditch is excavated, when draining the water accumulated in the tunnel, the pumps generally pump the water directly out of the drainage ditch. However, because small stones or grass clippings accumulate in the drainage ditch, the pumps are prone to clogging. Workers need to constantly clean the debris near the pumps to prevent them from becoming blocked and unable to continue working, thus affecting work efficiency and increasing the labor intensity of the workers. At the same time, the traditional cleaning method usually involves cleaning all the debris together and collecting it in one place, making it impossible to classify and clean different debris, which is not convenient for the later processing of debris, increasing the workload of the workers and reducing work efficiency.

[0004] Therefore, in order to address the above problems, a drainage device and drainage method for tunnel construction are proposed to solve these problems. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by developing a drainage device and method for tunnel construction. This invention facilitates the removal of debris from the water during pumping, preventing blockages in the pump. It also allows for the classification of the removed debris, reducing the labor intensity of workers in the later stages of debris handling and improving efficiency.

[0006] On the one hand, to achieve the above objectives, the present invention employs the following technical solutions:

[0007] A tunnel construction drainage device, comprising:

[0008] A treatment box, installed on the pumping pipe of a water pump, includes a cover plate, which is removable and located on the top of the treatment box. The pumping pipe is installed on the cover plate. A pump connecting pipe is installed at the bottom of the treatment box. A support frame is installed on the inner wall of the treatment box. A fixing frame includes a placement slot, which is installed on both sides of the treatment box. The placement slot is located within the fixing frame. A transmission unit includes a power component and a rack. The power component is installed in the placement slot, and the rack is connected to the output end of the power component, allowing it to move horizontally left and right under the action of the power component. A rotation unit includes a gear, a sliding column, and a screw. When rotating, it meshes with the rack and pinion. The sliding column is coaxial with the gear and can slide along the gear axis. The screw is mounted on the sliding column and coaxial with the gear, and the screw passes through the side wall of the treatment box. The filter plate is movably mounted on the frame inside the treatment box. The side plate of the filter plate is provided with a non-penetrating threaded hole. The screw can be screwed into the threaded hole and drives the filter plate to rotate around the frame after reaching the end of the threaded hole. The closing component is mounted on the top plate inside the treatment box and can close the water inlet under the rotation of the filter plate to prevent water from continuing to enter the treatment box.

[0009] Preferably, the transmission unit further includes a connecting block and a sliding rod. The connecting block is disposed at the output end of the power component, and the sliding rod is disposed on the connecting block. Both ends of the sliding rod are provided with racks to achieve stable transmission of power from the power component and improve the stability of power transmission in the device.

[0010] Preferably, the rotating unit comprises four sets, all mounted on the side wall of the processing chamber and located on the same horizontal plane. Two sets of rotating units facing each other are coaxially arranged, and the distance between two sets of rotating units on the same side is the same as the length of the sliding rod. This allows the rotating units on the left and right sides to rotate when the rack moves left and right, so that the right side remains stationary when the left side rotates, and vice versa. When the sliding rod is in the middle of two sets of rotating units on the same side, the racks and gears on both sides are not engaged, so that the two gears on the same side will not rotate simultaneously, thus avoiding obstructing the rotation of the filter plate and improving the stability of the device.

[0011] Preferably, through slots are provided on both side walls of the treatment box perpendicular to the rack. The through slots are located above the frame, and baffles are movably installed on the outside of the through slots. The baffles provide a relatively closed environment inside the treatment box without obstructing the discharge of filtered impurities, which facilitates the entry of water into the treatment box and improves the practicality of the device.

[0012] In a further preferred embodiment, a torsion spring is provided at the connection between the baffle and the side wall of the processing box to realize the automatic reset of the baffle and improve the efficiency of the device.

[0013] Preferably, the filter plate is provided with several filter holes penetrating the plate surface, and several baffles are provided on the filter plate. The baffles are inclined towards the baffle on the same side, and the included angle between the baffle and the filter plate is greater than or equal to 45° and less than 90°. This achieves the purpose of screening strip-shaped debris from weeds without hindering the debris from falling off. If the inclination angle is too small, the strip-shaped debris is easily clamped by the baffle and is not easy to fall off. If the inclination angle is too large, the blocking effect of the baffle will decrease, and the debris will not be easy to fall off, resulting in a decrease in cleaning quality and a reduction in work efficiency.

[0014] In a further preferred embodiment, one of the baffles is positioned in front of the baffle that is tilted to one side, so that the baffle opens when the filter plate rotates to that side, facilitating the discharge of strip-shaped debris.

[0015] Preferably, a sliding groove is provided on the side plate inside the treatment box, so that the filter plate can slide in the sliding groove when it rotates. The sliding groove also provides a guiding effect for the rotation of the filter plate, making the rotation of the filter plate more stable.

[0016] Preferably, the closing assembly includes two sealing plates, which are slidably disposed on both sides of the water inlet inside the treatment tank and connected by springs. Each sealing plate has a pull plate at its bottom, and the length of the pull plate is set so that it can be pulled by the filter plate when the filter plate rotates, so as to temporarily close the water inlet while the filter plate rotates, preventing water from continuing to enter the treatment tank and affecting the filtration effect, thereby improving the working quality of the device.

[0017] Preferably, the rotating unit also includes a limiting post, which is disposed on the side wall of the processing box inside the gear. The limiting post can limit the relative position of the gear and the rack when they move, and prevent the gear from slipping off the rack when it rotates. The limiting post restricts the left and right movement of the gear relative to the rack, but does not restrict the rotation of the gear driven by the rack, thus improving the stability of the device during use.

[0018] Preferably, the screw is configured as a semi-screw, comprising a threaded section and a smooth section. The length of the threaded section is consistent with the depth of the threaded hole on the filter plate. The screw can be threadedly connected to the side wall of the treatment box. The threaded connection between the treatment box and the screw only provides guidance for the screw to screw into or out of the threaded hole. When the threaded section of the screw is fully inserted into the threaded hole, the smooth section of the screw is connected to the treatment box, avoiding affecting the rotation of the filter plate driven by the screw and improving the practicality of the device.

[0019] Preferably, it also includes two collection boxes, which are respectively set on the lower side of the two baffles on the processing box to collect different debris, making it easier for staff to handle the debris later and improving efficiency.

[0020] On the other hand, the present invention also provides a drainage method, including a tunnel construction drainage device as described above, and further including a pump and the following steps:

[0021] Step 1: Turn on the water pump. Under the action of the water pump, the water in the tunnel drainage ditch is pumped into the treatment tank through the water pumping pipe.

[0022] Step 2: Filtration. The filter holes on the filter plate filter out stones, weeds, and other debris from the drainage ditch and place them on top of the filter plate.

[0023] Step 3: Initial cleaning. After the impurities filtered on the filter plate accumulate to a certain amount, the power unit is activated to drive the rack and pinion to move. First, it moves towards the direction of the inclined baffle. The gear away from the inclined baffle rotates under the movement of the rack and pinion, driving the screw to rotate. The screw screws inward into the threaded hole of the filter plate and continues to rotate after reaching the bottom of the threaded hole, causing the entire filter plate to rotate around the frame. During the rotation, the pull plate is pulled to move the sealing plate and block the inlet of the treatment tank. At this time, the filter plate is tilted to a certain degree, and the stones and other heavy objects on the filter plate roll off by gravity and push open the baffle on that side and fall out of the treatment tank. Weeds and other debris remain on the filter plate due to the obstruction of the baffle.

[0024] Step 4: Clean again. The power component drives the rack to move in the other direction, the filter plate rotates in the opposite direction and returns to the horizontal position. The sealing plate returns to its original position under the action of the spring. The rack continues to move, and the gear near the inclined direction of the baffle starts to rotate under the movement of the rack. The gear drives the screw to rotate, and the screw screws inward into the threaded hole of the filter plate. After reaching the bottom of the threaded hole, it continues to rotate, causing the filter plate to rotate around the other side of the frame. During the rotation, the pull plate is pulled to move the sealing plate and block the inlet of the treatment tank. At this time, the filter plate is tilted to a certain degree. At this time, a baffle near the baffle pushes the baffle open, and weeds and other debris on the filter plate slide off the filter plate and fall outside the treatment tank.

[0025] Step 5: Reset. The power component drives the rack to move again in the direction of the stop bar tilt. When the gear and rack are no longer engaged, all components of the device return to their initial state.

[0026] The effects described in the invention are merely those of the embodiments, and not all the effects of the invention. The above technical solution has the following advantages:

[0027] 1. This invention uses a filter plate with filter holes and baffles to filter impurities in water onto the filter plate and separates stones and weeds from the impurities through the baffles. It can separate two types of impurities without multiple layers of filtration. It is simple to operate and highly efficient.

[0028] 2. By setting up a transmission unit and a rotation unit, the present invention can drive the filter plate in two stages. With the help of the frame, the filter plate rotates around the frame. The rotation around the left frame is for cleaning up pebbles and other blocky objects, and the rotation around the right frame is for cleaning up weeds and other strip-shaped objects. This allows for the classification and treatment of debris in the water in two steps and discharge of the debris into the treatment box, which improves the efficiency of the staff in the later stage of debris treatment.

[0029] 3. By setting up a closing component, the present invention temporarily closes the water inlet when the filter plate is rotated for cleaning, preventing the filtration effect from deteriorating due to continued water intake. After the filter plate returns to the filtration position, the water inlet is opened by the spring of the closing component to continue working, thereby improving the filtration quality of the device.

[0030] 4. The present invention, by setting the baffles on the filter plate at an angle greater than or equal to 45° and less than 90°, facilitates the screening and cleaning of strip-shaped objects such as weeds. If the angle of inclination is too small, less than 45°, the strip-shaped objects will easily be clamped by the baffles and will not easily fall off. If the angle of inclination is too large, greater than or equal to 90°, the blocking effect of the baffles will decrease and the objects will not easily fall off, resulting in a decrease in cleaning quality and a reduction in work efficiency. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention after removing one side panel;

[0033] Figure 2 This is a schematic diagram of the scaffolding structure according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic cross-sectional view of the side portion of an embodiment of the present invention. Figure 1 ;

[0035] Figure 4 This is a schematic diagram of the axial side portion structure according to an embodiment of the present invention;

[0036] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0037] Figure 6 This is a schematic diagram of the connection structure between the gear and the sliding column according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the baffle bar on the filter plate according to an embodiment of the present invention;

[0039] Figure 8This is a schematic cross-sectional view of the side portion of an embodiment of the present invention. Figure 2 ;

[0040] Figure 9 This is a schematic diagram of the relevant structure on the filter plate according to an embodiment of the present invention.

[0041] In the diagram, 1. Processing box; 2. Fixing frame; 3. Power component; 4. Connecting block; 5. Sliding rod; 6. Rack; 7. Gear; 8. Sliding column; 9. Screw; 10. Filter plate; 11. Frame; 12. Stop bar; 13. Slide groove; 14. Sealing plate; 15. Spring; 16. Pull plate; 17. Pumping pipe; 18. Baffle; 19. Placement slot; 20. Cover plate; 21. Limiting column; 22. Threaded hole; 23. Connecting pump pipe. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0043] like Figure 1-9 As shown, the present invention provides a technical solution: a tunnel construction drainage device, comprising:

[0044] A treatment box 1, installed on the pumping pipe of a water pump, includes a cover plate 20, which is located on the top of the treatment box 1 and is removable. A pumping pipe 17 is installed on the cover plate 20. A pump connecting pipe 23 is installed at the bottom of the treatment box 1. Four brackets 11 are installed on the inner wall of the treatment box 1, located near the four corners of the inner wall of the treatment box 1. A fixing frame 2 includes a placement groove 19, which is installed on both sides of the treatment box. The placement groove 19 is installed inside the fixing frame 2. A transmission unit includes a power component 3 and a rack 6. The power component 3 is installed in the placement groove 19, and the rack 6 is connected to the output end of the power component 3. The rack 6 can move horizontally left and right under the action of the power component 3. A rotating unit includes a gear 7. The equipment includes a sliding column 8 and a screw 9. When the gear 7 rotates, it meshes with the rack 6. The sliding column 8 is coaxial with the gear 7 and can slide along the axis of the gear 7. The screw 9 is mounted on the sliding column 8 and is coaxial with the gear 7. The screw 9 passes through the side wall of the treatment box 1. A filter plate 10 is movably mounted on a frame 11 inside the treatment box 1. The side plate of the filter plate 10 has a non-penetrating threaded hole 22. The screw 9 can be screwed into the threaded hole 22 and, after reaching the end of the threaded hole 22, drives the filter plate 10 to rotate around the frame 11. A closing assembly is mounted on the top plate inside the treatment box 1. It can close the water inlet under the rotation of the filter plate 10 to prevent water from continuing to enter the treatment box 1.

[0045] In this embodiment, the transmission unit further includes a connecting block 4 and a sliding rod 5. The connecting block 4 is disposed at the output end of the power component 3, which can be a cylinder. The sliding rod 5 is disposed on the connecting block 4, and racks 6 are provided at both ends of the sliding rod 5 to achieve stable transmission of power from the power component 3 and improve the stability of power transmission of the device.

[0046] In this embodiment, the rotating unit includes four sets, all of which are set on the side wall of the processing box 1 and located on the same horizontal plane. The two sets of rotating units opposite each other are coaxially arranged, and the distance between the two sets of rotating units on the same side is the same as the length of the sliding rod 5. When the rack 6 moves left and right, it can drive the rotating units on the left and right sides to achieve the same effect: the left side rotates while the right side remains stationary, and the right side rotates while the left side remains stationary. When the sliding rod 5 is in the middle of the two sets of rotating units on the same side, the rack 6 and gear 7 on both sides are not meshed, so that the two gears 6 on the same side will not rotate at the same time, thus avoiding obstructing the rotation of the filter plate 10 and improving the stability of the device.

[0047] In this embodiment, through slots are provided on both side walls of the treatment box 1 perpendicular to the rack 6. The through slots are located above the frame 11. A baffle 18 is movably installed on the outside of the through slot. The baffle 18 provides a relatively closed environment inside the treatment box without obstructing the discharge of filtered impurities, which facilitates the entry of water into the treatment box and improves the practicality of the device.

[0048] In another embodiment, a torsion spring is provided at the connection between the baffle 18 and the side wall of the processing box 1 to realize the automatic reset of the baffle 18 and improve the efficiency of the device.

[0049] In this embodiment, the filter plate 10 is provided with a plurality of filter holes penetrating the plate surface, and a plurality of baffles 12 are provided on the filter plate 10. The baffles 12 are inclined toward the baffle 18 on the same side, and the included angle between the baffles 12 and the filter plate 10 is greater than or equal to 45° and less than 90°. This achieves the purpose of screening strip-shaped debris from weeds without hindering the debris from falling off. If the inclination angle is too small, the strip-shaped debris will easily be clamped by the baffles and will not fall off easily. If the inclination angle is too large, the blocking effect of the baffles will decrease, and the debris will not fall off easily, resulting in a decrease in cleaning quality and a reduction in work efficiency.

[0050] In this embodiment, one of the baffles 12 is positioned in front of the baffle 18 tilted to one side, so that when the filter plate 10 rotates to that side, the baffle 18 is opened to facilitate the discharge of strip-shaped debris.

[0051] In this embodiment, a sliding groove 13 is provided on the side plate inside the processing box 1. When the filter plate 10 rotates, it can slide in the sliding groove 13. The sliding groove 13 also provides a guiding function for the rotation of the filter plate 10, making the rotation of the filter plate 10 more stable.

[0052] In this embodiment, the closing assembly includes two sealing plates 14, which are slidably disposed on both sides of the water inlet inside the treatment tank 1 and connected by a spring 15. Each sealing plate 14 has a pull plate 16 at its bottom. The length of the pull plate 16 is set so that it can be pulled by the filter plate 10 when the filter plate 10 rotates, so that the water inlet is temporarily closed while the filter plate 10 rotates, preventing water from continuing to enter the treatment tank 1 and affecting the filtration effect, thereby improving the working quality of the device.

[0053] In this embodiment, the rotating unit also includes a limiting post 21, which is disposed on the side wall of the processing box 1 inside the gear 7. The limiting post 21 can limit the relative position of the gear 7 and the rack 6 when they move, and prevent the gear 7 from slipping off the rack 6 when it rotates. The limiting post 21 restricts the left and right movement of the gear 7 relative to the rack 6, but does not restrict the rotation of the gear 7 driven by the rack 6, thus improving the stability of the device during use.

[0054] In another embodiment, the limiting post 21 can also be set on the gear 7. One end of the limiting post 21 is set on the side of the gear 7 near the processing box 1, and the other end is in contact with the side wall of the processing box 1 to prevent the gear 7 from sliding off the rack 6, thereby improving the safety and stability of the device.

[0055] In this embodiment, the screw 9 is configured as a semi-screw, including a threaded section and a smooth section. The length of the threaded section is consistent with the depth of the threaded hole 22 on the filter plate 10. The screw 9 can be threadedly connected to the side wall of the processing box 1. The threaded connection between the processing box 1 and the screw 9 only provides guidance for the screw 9 to screw into or out of the threaded hole 22. When the threaded section of the screw 9 is fully inserted into the threaded hole 22, the smooth section of the screw 9 is connected to the processing box 1, avoiding affecting the rotation of the filter plate 10 driven by the screw 9, thus improving the practicality of the device.

[0056] In another embodiment, two collection boxes are also included, which are respectively set on the lower side of the two baffles 18 on the processing box 1 to collect different debris, which facilitates the quick processing of debris by staff and improves efficiency. Example 2

[0057] A drainage method includes a tunnel construction drainage device as described above, and further includes a pump and the following steps:

[0058] Step 1: Turn on the water pump. Under the action of the water pump, the water in the tunnel drainage ditch is pumped into the treatment tank 1 through the water pumping pipe 17.

[0059] Step 2: Filtration. The filter holes on the filter plate 10 filter out stones, weeds and other debris in the water of the drainage ditch and place them above the filter plate 10.

[0060] Step 3: Initial cleaning. After the impurities filtered on the filter plate 10 accumulate to a certain amount, the power component 3 is activated to drive the rack 6 to move. It first moves towards the direction of the baffle 12. The gear 7, which is away from the direction of the baffle 12, rotates under the movement of the rack 6, which drives the screw 9 to rotate. The screw 9 is screwed into the threaded hole 22 of the filter plate 10 and continues to rotate after reaching the bottom of the threaded hole 22. This causes the filter plate 10 to rotate around the frame 11. During the rotation, the pull plate 16 is pulled to move the sealing plate 14, which blocks the inlet of the treatment box. At this time, the filter plate 10 is tilted to a certain degree. The stones and other heavy objects on the filter plate 10 roll off by gravity and push open the baffle 18 on this side, which falls out of the treatment box 1. Weeds and other debris remain on the filter plate 10 under the obstruction of the baffle 12.

[0061] Step 4: Clean again. The power component 3 drives the rack 6 to move in the other direction, the filter plate 10 rotates in the opposite direction and returns to the horizontal position. The sealing plate 14 returns to its original position under the action of the spring 15. The rack 6 continues to move. The gear 7 near the inclined direction of the baffle 12 starts to rotate under the movement of the rack 6. The gear 7 drives the screw 9 to rotate. The screw 9 screws inward into the threaded hole 22 of the filter plate 10 and continues to rotate after reaching the bottom of the threaded hole 22. This drives the filter plate 10 to rotate around the other side of the bracket 11. During the rotation, the pull plate 16 is pulled to move the sealing plate 14 and block the water inlet of the treatment box. At this time, the filter plate 10 is tilted to a certain degree. At this time, a baffle 12 near the baffle 18 pushes the baffle 18 open. Weeds and other debris on the filter plate 10 slide off the filter plate 10 and fall outside the treatment box 1.

[0062] Step 5: Reset. The power component 3 drives the rack 6 to move again in the tilting direction of the stop bar 12. When the gear 7 and the rack 6 are not meshed, all components of the device return to their initial state and are ready for the next working cycle.

[0063] In another embodiment, a timer device can be connected to the power unit 3 to automatically clean impurities on the filter plate 10 over a period of time, reducing labor intensity and improving efficiency.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more unless otherwise explicitly specified.

[0066] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drainage device for tunnel construction, characterized in that, include: The treatment box (1) includes a cover plate (20), the cover plate (20) is set on the top of the treatment box (1), the water pumping pipe (17) is set on the cover plate (20), the bottom of the treatment box (1) is set with a connecting pump pipe (23), and the inner wall of the treatment box (1) is set with a frame (11). The fixing frame (2) includes a placement slot (19). The fixing frame (2) is set on both sides of the processing box, and the placement slot (19) is set inside the fixing frame (2). The transmission unit includes a power component (3) and a rack (6). The power component (3) is set in the placement groove (19), and the rack (6) is connected to the output end of the power component (3). The rack (6) can move left and right under the action of the power component (3). The rotating unit includes a gear (7), a sliding column (8), and a screw (9). The gear (7) meshes with a rack (6), the sliding column (8) is coaxial with the gear (7), and the sliding column (8) can slide on the gear (7) along the axis of the gear (7). The screw (9) is mounted on the sliding column (8) and is coaxial with the gear (7). The screw (9) passes through the side wall of the processing box (1). The filter plate (10) is set on the frame (11) inside the processing box (1). The side plate of the filter plate (10) is provided with a non-through threaded hole (22). The screw (9) can be screwed into the threaded hole (22) and drive the filter plate (10) to rotate around the frame (11) after reaching the end of the threaded hole (22). The closing component is set on the top plate inside the treatment tank (1) and can close the water inlet under the rotation of the filter plate (10) to prevent water from continuing to enter the treatment tank (1). The transmission unit also includes a connecting block (4) and a sliding rod (5). The connecting block (4) is located at the output end of the power component (3), and the sliding rod (5) is located on the connecting block (4). Both ends of the sliding rod (5) are provided with racks (6). The rotating unit includes four sets, all of which are set on the side wall of the processing box (1) and located on the same horizontal plane. The two sets of rotating units opposite each other are coaxially set, and the distance between the two sets of rotating units on the same side is consistent with the length of the sliding rod (5). When the rack (6) moves left and right, it can drive the rotating units on the left and right sides to achieve the left side rotating while the right side does not move, and the right side rotating while the left side does not move. The processing box (1) has through slots on both side walls perpendicular to the rack (6). The through slots are located above the frame (11), and baffles (18) are installed on the outside of the through slots. The filter plate (10) is provided with several filter holes that penetrate the plate surface. The filter plate (10) is provided with several baffles (12). The baffles (12) are inclined towards the baffle (18) on the same side, and the included angle between the baffles (12) and the filter plate (10) is greater than or equal to 45° and less than 90°.

2. The tunnel construction drainage device according to claim 1, characterized in that: A chute (13) is provided on the side plate inside the processing box (1), and the filter plate (10) can slide in the chute (13) when it rotates.

3. A tunnel construction drainage device according to claim 1, characterized in that: The closing assembly includes two sealing plates (14), which are slidably disposed on both sides of the inlet inside the treatment tank (1) and connected by a spring (15). Each sealing plate (14) has a pull plate (16) at its bottom, and the length of the pull plate (16) is set so that it can be pulled by the filter plate (10) when the filter plate (10) rotates.

4. A tunnel construction drainage device according to claim 1, characterized in that: The rotating unit also includes a limiting post (21), which is set on the side wall of the processing box (1) inside the gear (7). The limiting post (21) can limit the relative position of the gear (7) and the rack (6) when they move, and prevent the gear (7) from slipping off the rack (6) when it rotates.

5. A tunnel construction drainage device according to claim 1, characterized in that: The screw (9) is configured as a semi-screw, including a threaded section and a smooth section. The length of the threaded section is consistent with the depth of the threaded hole (22) on the filter plate (10). The screw (9) can be threadedly connected to the side wall of the processing box (1).

6. A drainage method, comprising a tunnel construction drainage device as described in any one of claims 1 to 5, and further comprising a pump, characterized in that, Includes the following steps: Step 1: Turn on the water pump. Under the action of the water pump, the water in the tunnel drainage ditch is pumped into the treatment tank (1) through the water pumping pipe (17). Step 2: Filtration. The filter holes on the filter plate (10) filter the stones and weeds in the water of the drainage ditch to the top of the filter plate (10). Step 3: Initial cleaning. After the impurities filtered on the filter plate (10) have accumulated to a certain amount, the power component (3) is turned on to drive the rack (6) to move. First, it moves towards the direction of the baffle (12). Then, the gear (7) away from the direction of the baffle (12) rotates under the movement of the rack (6), which drives the screw (9) to rotate. The screw (9) is screwed into the threaded hole (22) of the filter plate (10) and continues to rotate after reaching the bottom of the threaded hole (22), which drives the filter plate (10) to rotate around the frame (11). During the rotation, the pull plate (16) is pulled to drive the sealing plate (14) to move and block the inlet of the treatment box. At this time, the filter plate (10) is tilted to a certain degree. The stones on the filter plate (10) roll off by gravity and push open the baffle (18) on this side and fall out of the treatment box (1). The weeds remain on the filter plate (10) under the obstruction of the baffle (12). Step 4: Clean again. The power component (3) drives the rack (6) to move in the other direction. The filter plate (10) rotates in the opposite direction and returns to the horizontal position. The sealing plate (14) returns to its original position under the action of the spring (15). The rack (6) continues to move. The gear (7) close to the inclined direction of the stop bar (12) starts to rotate under the movement of the rack (6). The gear (7) drives the screw (9) to rotate. The screw (9) screws inward into the threaded hole (22) of the filter plate (10). And after reaching the bottom of the threaded hole (22), it continues to rotate, causing the filter plate (10) to rotate around the frame (11). During the rotation, the pull plate (16) is pulled to move the sealing plate (14) to block the inlet of the treatment box. At this time, the filter plate (10) is tilted to a certain degree. At this time, a baffle (12) near the baffle (18) pushes the baffle (18) open, and the weeds on the filter plate (10) slide down from the filter plate (10) and fall outside the treatment box. Step 5: Reset. The power component (3) drives the rack (6) to move again in the direction of the stop bar (12). When the gear (7) and the rack (6) are not meshed, all parts of the device return to their initial state.

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