Sewage discharge device for coal mining

By designing the coal mine mining sewage discharge device for screening components and driving components, the problem of slag blockage on the filter plate is solved, efficient cleaning and restoration of filtration efficiency is achieved, and cleaning time is reduced.

CN223221057UActive Publication Date: 2025-08-15SHANDONG DONGSHAN MINING CO LTD ZHU BAI COAL MINING
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Patent Information

Application Number
CN202422537372.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-21
Publication Date
2025-08-15
Estimated Expiration
2034-10-21

AI Technical Summary

Technical Problem

In the existing coal mine mining sewage discharge device, the surface of the filter plate is blocked after long-term use, resulting in reduced filtration efficiency and drainage efficiency, and the cleaning process is time-consuming and labor-intensive.

Method used

A device including screening assembly, push assembly, drive assembly and discharge port is designed to push the slag through a motor drive threaded rod and transmission block, and to clean the slag on the filter plate in combination with vibration and telescopic components.

Benefits of technology

It realizes efficient cleaning of slag on the filter plate, restores the filtration efficiency and drainage capacity of the filter device, and reduces cleaning time and manual operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sewage discharge device for coal mining, which belongs to the technical field of coal mining, and comprises a filter plate, a sewage discharge pipe and a sewage discharge pipe, the number of the sliding grooves is two, the two sliding grooves are formed in the inner wall of the main body, and the inner walls of the sliding grooves are in sliding connection with the outer surface of the filter plate; the number of the sliding rods is two, the left ends and the right ends of the two sliding rods are fixedly connected to the inner walls of the sliding grooves, and the sliding rods penetrate through the interior of the filter plate; the number of the pressure buffering springs is two, the two pressure buffering springs are arranged on the outer surface of the sliding rod in a sleeving mode, the left end faces of the pressure buffering springs are fixedly connected to the inner wall of the sliding groove, and the right end faces of the pressure buffering springs are fixedly connected to the left end face of the filtering plate. The problem that holes in the surface of a filter plate in the device are blocked by slag due to long-time sewage discharge is solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, in particular to a sewage discharge device for coal mining. Background Art

[0002] Coal mining is a complex engineering activity that involves geological exploration, mine development, mining technology, machinery and equipment, safety management and other aspects. The purpose of coal mining is to extract coal resources safely and efficiently, while also paying attention to environmental protection and cost control. Coal mining can adopt open-pit mining or underground mining according to the location and geological conditions of the coal seam. Coal mining is a resource-intensive industry, and its mining process will inevitably produce a large amount of wastewater. These wastewaters contain a variety of harmful substances, such as heavy metals, suspended matter, organic pollutants, etc. If they are directly discharged without treatment, they will cause serious pollution to the environment. Therefore, coal mining needs to be equipped with corresponding sewage discharge devices to reduce pollution to the environment and protect the ecological environment and human health.

[0003] The common sewage discharge devices on the market have efficient drainage and filtration functions during use. However, long-term sewage discharge causes a large amount of slag to accumulate on the surface of the filter plate inside the device. The slag blocks the holes on the surface of the filter plate, causing the filtration efficiency of the device to be greatly reduced. The drainage efficiency is also greatly reduced. If the filter plate is to be cleaned, it needs to be disassembled, which consumes a lot of time. Utility Model Content

[0004] In response to the problems existing in the prior art, the utility model provides a sewage discharge device for coal mining, which has the advantage of cleaning the slag attached to the surface of the filter plate, solving the problem that long-term sewage discharge causes a large amount of slag to accumulate on the surface of the filter plate inside the device, and the slag blocks the holes on the surface of the filter plate, resulting in a significant reduction in the filtration efficiency of the device and the drainage efficiency. If the filter plate is to be cleaned, it needs to be disassembled, which consumes a lot of time.

[0005] The utility model is realized in this way: a sewage discharge device for coal mining, comprising:

[0006] main body;

[0007] Water outlet: the water outlet is opened on the left end surface of the main body;

[0008] Water inlet: the outer surface of the water inlet is fixedly connected to the inner surface of the main body;

[0009] Screening component: The screening component is arranged inside the main body, and the screening component includes:

[0010] Filter plate: the filter plate is arranged inside the main body;

[0011] Sliding groove: There are two sliding grooves, both of which are opened on the inner wall of the main body, and the inner wall of the sliding groove is slidably connected to the outer surface of the filter plate;

[0012] Sliding rod: There are two sliding rods, both left and right ends of which are fixedly connected to the inner wall of the sliding groove, and the sliding rods pass through the interior of the filter plate;

[0013] Pressure-relief spring: There are two pressure-relief springs, both of which are sleeved on the outer surface of the sliding rod. The left end face of the pressure-relief spring is fixedly connected to the inner wall of the sliding groove, and the right end face of the pressure-relief spring is fixedly connected to the left end face of the filter plate.

[0014] As a preferred embodiment of the present invention, the right end surface of the filter plate is provided with a pushing assembly, and the pushing assembly includes:

[0015] Push plate: The left end surface of the push plate contacts the right surface of the filter plate;

[0016] Transmission block: The lower surface of the transmission block is fixedly connected to the upper surface of the push plate;

[0017] Threaded rod: The outer surface of the threaded rod is connected to the inside of the transmission block through threaded rotation, and the outer surface of the threaded rod is provided with a driving component.

[0018] As a preferred embodiment of the present invention, the drive assembly includes:

[0019] Motor: The output end of the motor is fixedly connected to the front end surface of the threaded rod;

[0020] Support plate: The lower surface of the support plate is fixedly connected to the upper surface of the filter plate;

[0021] Fixing parts: There are three fixing parts, the lower surfaces of the three fixing parts are fixedly connected to the upper surface of the support plate, the inner surface of the front fixing part is fixedly connected to the outer surface of the motor, and the inner surface of the rear fixing part is rotatably connected to the outer surface of the threaded rod through a bearing.

[0022] As a preferred embodiment of the present invention, a transmission assembly is provided on the outer surface of the motor output end, and the transmission assembly includes:

[0023] Pulley: There are two pulleys, which are connected by a belt transmission, and the inner surface of the right pulley is fixedly connected to the output end of the motor;

[0024] Connecting rod: the front end of the connecting rod is fixedly connected to the rear end of the pulley on the left side;

[0025] Fixed block: The inner surface of the fixed block is rotatably connected to the outer surface of the connecting rod through a bearing.

[0026] As a preferred embodiment of the present invention, the left end surface of the connecting rod is provided with a vibration component, and the vibration component includes:

[0027] Missing gear: the front surface of the missing gear is fixedly connected to the rear end surface of the connecting rod;

[0028] Tooth plate: the right end surface of the tooth plate and the outer surface of the missing gear are in a mutually meshing relationship;

[0029] Pressing block: the upper end surface of the pressing block is fixedly connected to the lower surface of the tooth plate;

[0030] Travel groove: the travel groove is opened on the upper surface of the support plate.

[0031] As a preferred embodiment of the present invention, a telescopic assembly is provided on the upper surface of the tooth plate, and the telescopic assembly includes:

[0032] Telescopic column: the lower surface of the telescopic column is fixedly connected to the upper surface of the tooth plate;

[0033] Telescopic spring: the telescopic spring is sleeved on the outer surface of the telescopic column, and the lower end surface of the telescopic spring is fixedly connected to the upper surface of the tooth plate;

[0034] "L"-shaped fixing plate: the lower surface of the "L"-shaped fixing plate is fixedly connected to the upper surface of the support plate, the inner surface of the "L"-shaped fixing plate is fixedly connected to the telescopic column and the upper end surface of the telescopic spring, and the inner wall of the "L"-shaped fixing plate is slidably connected to the rear end surface of the tooth plate.

[0035] As a preferred embodiment of the present invention, a discharge port is provided on the outer surface of the main body, and the discharge port is fixedly connected to the outer surface of the main body.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0037] 1. The utility model sets a screening component, a pushing component, a driving component and a discharge port. A large amount of slag stagnates on the surface of the filter plate. The motor is started by the controller, and the motor drives the threaded rod to rotate, so that the transmission block moves along the outer surface of the threaded rod. The transmission block can drive the pushing plate to move together, so that the pushing plate pushes the slag outward until it is pushed out of the discharge port, thereby pushing the slag on the surface of the filter plate to complete the cleaning effect (advantage).

[0038] 2. The utility model is provided with a driving assembly, a transmission assembly, a vibration assembly and a telescopic assembly. The motor is started by the controller to drive the pulley to rotate, and the pulley drives the connecting rod to rotate together, so that the connecting rod rotates with the rotation of the pulley, and the connecting rod can drive the missing gear to rotate together. When the toothed side of the missing gear engages with the tooth plate, the tooth plate begins to move upward, and the tooth plate moves up to drive the pressure block to move upward and squeeze the telescopic column and the telescopic spring, so that the telescopic spring generates elastic force. When the toothless side of the missing gear contacts the tooth plate, the telescopic spring can release the elastic force, pushing the tooth plate to move downward and collide with the upper surface of the filter plate, thereby achieving the effect of shaking off the slag remaining on the filter plate and assisting in cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the three-dimensional structure provided by an embodiment of the utility model;

[0040] Figure 2 This is a schematic diagram of a partial three-dimensional structure provided by an embodiment of the utility model;

[0041] Figure 3 This is a schematic diagram of a partial three-dimensional structure provided by an embodiment of the utility model;

[0042] Figure 4 It is an exploded schematic diagram of a vibration component and a telescopic component provided by an embodiment of the present utility model.

[0043] In the figure: 1. Main body; 2. Water outlet; 3. Water inlet; 4. Screening assembly; 401. Filter plate; 402. Sliding groove; 403. Sliding rod; 404. Pressure-relieving spring; 5. Pushing assembly; 501. Pushing plate; 502. Transmission block; 503. Threaded rod; 6. Driving assembly; 601. Motor; 602. Support plate; 603. Fixing part; 7. Transmission assembly; 701. Pulley; 702. Connecting rod; 703. Fixing block; 8. Vibration assembly; 801. Missing gear; 802. Tooth plate; 803. Pressing block; 804. Travel groove; 9. Telescopic assembly; 901. Telescopic column; 902. Telescopic spring; 903. "L"-shaped fixing plate; 10. Discharge port. DETAILED DESCRIPTION

[0044] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0045] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0046] like Figures 1 to 4 As shown, the embodiment of the present invention provides a coal mining wastewater discharge device, comprising:

[0047] Subject 1;

[0048] Water outlet 2: Water outlet 2 is opened on the left end surface of the main body 1;

[0049] Water inlet 3: The outer surface of the water inlet 3 is fixedly connected to the inner surface of the main body 1;

[0050] Screening component 4: The screening component 4 is arranged inside the main body 1 and includes:

[0051] Filter plate 401: The filter plate 401 is disposed inside the main body 1;

[0052] Sliding groove 402: There are two sliding grooves 402, both of which are opened on the inner wall of the main body 1. The inner wall of the sliding groove 402 is slidably connected to the outer surface of the filter plate 401;

[0053] Sliding rod 403: There are two sliding rods 403, both left and right ends of the two sliding rods 403 are fixedly connected to the inner wall of the sliding groove 402, and the sliding rods 403 pass through the interior of the filter plate 401;

[0054] Pressure relief spring 404: There are two pressure relief springs 404, both of which are sleeved on the outer surface of the sliding rod 403. The left end face of the pressure relief spring 404 is fixedly connected to the inner wall of the sliding groove 402, and the right end face of the pressure relief spring 404 is fixedly connected to the left end face of the filter plate 401.

[0055] refer to Figure 2 As shown, the right end surface of the filter plate 401 is provided with a pushing component 5, which includes:

[0056] Push plate 501: The left end surface of the push plate 501 contacts the right surface of the filter plate 401;

[0057] Transmission block 502: The lower surface of the transmission block 502 is fixedly connected to the upper surface of the push plate 501;

[0058] Threaded rod 503: The outer surface of the threaded rod 503 is rotatably connected to the inside of the transmission block 502 through threads, and the outer surface of the threaded rod 503 is provided with a driving component 6.

[0059] The above scheme is adopted: sewage enters the main body 1 from the water inlet 3, the water flows through the filter plate 401, and the slag is stagnant on the right side of the filter plate 401. Long-term filtration causes excessive accumulation of slag on the right side of the filter plate 401, and the filter plate 401 is gradually pressed by the weight of the slag to move to the left along the inner wall of the sliding groove 402. When the filter plate 401 moves, it squeezes the pressure relief spring 404, causing the pressure relief spring 404 to generate elastic force. At this time, the threaded rod 503 is rotated to make the transmission block 502 move along the outer surface of the threaded rod 503. The transmission block 502 can drive the push plate 501 to move together, so that the push plate 501 pushes the slag outward, thereby achieving the effect of cleaning the slag on the surface of the filter plate 401.

[0060] refer to Figure 2 As shown, the drive assembly 6 includes:

[0061] Motor 601: The output end of the motor 601 is fixedly connected to the front end surface of the threaded rod 503;

[0062] Support plate 602: The lower surface of the support plate 602 is fixedly connected to the upper surface of the filter plate 401;

[0063] Fixing member 603: There are three fixing members 603. The lower surfaces of the three fixing members 603 are fixedly connected to the upper surface of the support plate 602. The inner surface of the front fixing member 603 is fixedly connected to the outer surface of the motor 601. The inner surface of the rear fixing member 603 is rotatably connected to the outer surface of the threaded rod 503 through a bearing.

[0064] The above solution is adopted: in order to rotate the threaded rod 503, the motor 601 is started by the controller, and the motor 601 drives the threaded rod 503 to rotate. The support plate 602 and the fixing member 603 mainly play the role of supporting the motor 601 and the threaded rod 503.

[0065] refer to Figure 3 As shown, the outer surface of the output end of the motor 601 is provided with a transmission assembly 7, which includes:

[0066] Pulley 701: There are two pulleys 701, which are connected by a belt transmission. The inner surface of the right pulley 701 is fixedly connected to the output end of the motor 601;

[0067] Connecting rod 702: The front end of the connecting rod 702 is fixedly connected to the rear end of the left pulley 701;

[0068] Fixed block 703: The inner surface of the fixed block 703 is rotatably connected to the outer surface of the connecting rod 702 via a bearing.

[0069] Adopting the above solution: when the motor 601 is started, the motor 601 can drive the pulley 701 to rotate, and the pulley 701 drives the connecting rod 702 to rotate together, so that the connecting rod 702 rotates with the rotation of the pulley 701, and the fixed block 703 mainly plays the role of supporting the connecting rod 702.

[0070] refer to Figure 3 and Figure 4 As shown, the left end face of the connecting rod 702 is provided with a vibration assembly 8, which includes:

[0071] Missing gear 801: The front surface of the missing gear 801 is fixedly connected to the rear end surface of the connecting rod 702;

[0072] Tooth plate 802: The right end surface of the tooth plate 802 and the outer surface of the missing gear 801 are in a mutually meshing relationship;

[0073] Pressing block 803: The upper end surface of the pressing block 803 is fixedly connected to the lower surface of the tooth plate 802;

[0074] Travel groove 804 : The travel groove 804 is formed on the upper surface of the support plate 602 .

[0075] Adopting the above scheme: when the connecting rod 702 rotates, the connecting rod 702 can drive the missing gear 801 to rotate together, and when the toothed side of the missing gear 801 engages with the tooth plate 802, the tooth plate 802 begins to move upward, and the upward movement of the tooth plate 802 can drive the pressure block 803 to move upward. When the side without teeth of the missing gear 801 contacts the tooth plate 802, the tooth plate 802 can return to its initial position and collide with the upper surface of the filter plate 401, shaking off the slag remaining on the filter plate 401.

[0076] refer to Figure 4 As shown, the upper surface of the tooth plate 802 is provided with a telescopic assembly 9, and the telescopic assembly 9 includes:

[0077] Telescopic column 901: The lower surface of the telescopic column 901 is fixedly connected to the upper surface of the tooth plate 802;

[0078] Telescopic spring 902: The telescopic spring 902 is sleeved on the outer surface of the telescopic column 901, and the lower end surface of the telescopic spring 902 is fixedly connected to the upper surface of the tooth plate 802;

[0079] "L"-shaped fixing plate 903: The lower surface of the "L"-shaped fixing plate 903 is fixedly connected to the upper surface of the support plate 602, the inner surface of the "L"-shaped fixing plate 903 is fixedly connected to the upper end surface of the telescopic column 901 and the telescopic spring 902, and the inner wall of the "L"-shaped fixing plate 903 is slidably connected to the rear end surface of the tooth plate 802.

[0080] Using the above solution: when the tooth plate 802 moves upward, the tooth plate 802 can squeeze the telescopic column 901 and the telescopic spring 902, so that the telescopic spring 902 generates elastic force. When the side of the missing gear 801 without teeth contacts the tooth plate 802, the telescopic spring 902 can release the elastic force and push the tooth plate 802 to move downward.

[0081] refer to Figure 1 As shown, a discharge port 10 is provided on the outer surface of the main body 1 , and the discharge port 10 is fixedly connected to the outer surface of the main body 1 .

[0082] With the above solution, the discharge port 10 mainly functions as the push plate 501 moves forward and backward, thereby pushing the slag out of the discharge port 10 to achieve cleaning.

[0083] The working principle of this utility model:

[0084] When in use, sewage enters the main body 1 from the water inlet 3, the water flows through the filter plate 401, and flows out from the water outlet 2, while the slag is stagnant on the right side of the filter plate 401. Long-term filtration causes excessive accumulation of slag on the right side of the filter plate 401. The filter plate 401 is gradually pressed by the weight of the slag to move to the left along the inner wall of the sliding groove 402. When the filter plate 401 moves, the pressure relief spring 404 is squeezed, causing the pressure relief spring 404 to generate elastic force. At this time, the controller starts the motor 601, and the motor 601 drives the threaded rod 503 to rotate, so that the transmission block 502 moves along the outer surface of the threaded rod 503. The transmission block 502 can drive the push plate 501 to move together, so that the push plate 501 pushes the slag outward until it is pushed out of the discharge port 10. When the motor 601 starts, it can also drive the pulley 701 to rotate, and the pulley 701 drives the connecting rod 702 to rotate together, so that the connecting rod When the toothed side of the missing gear 801 is in mesh with the toothed plate 802, the toothed plate 802 starts to move upward, and the toothed plate 802 moves upward, driving the pressure block 803 to move upward and squeeze the telescopic column 901 and the telescopic spring 902, so that the telescopic spring 902 generates an elastic force. When the toothless side of the missing gear 801 contacts the toothed plate 802, the telescopic spring 902 can release the elastic force, pushing the toothed plate 802 to move downward and collide with the upper surface of the filter plate 401, shaking off the slag remaining on the filter plate 401. When the motor 601 rotates in the opposite direction, the motor 601 indirectly drives the push plate 501 to push the remaining half of the slag out of the other discharge port 10. At this time, the pressure relief spring 404 can release the elastic force, pushing the filter plate 401 back to its initial position, completing the cleaning of the slag inside the main body 1.

[0085] To sum up: this sewage discharge device for coal mining, through the main body 1, water outlet 2, water inlet 3, screening component 4, pushing component 5, driving component 6, transmission component 7, vibration component 8, telescopic component 9 and discharge port 10, solves the problem of long-term sewage discharge, which causes a large amount of slag to accumulate on the surface of the filter plate inside the device. The slag blocks the holes on the surface of the filter plate, resulting in a significant reduction in the filtering efficiency of the device and a significant reduction in the drainage efficiency. If the filter plate is to be cleaned, it needs to be disassembled, which consumes a lot of time.

[0086] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0087] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage discharge device for coal mining, characterized in that: include: Subject (1); Water outlet (2): the water outlet (2) is provided on the left end surface of the main body (1); Water inlet (3): the outer surface of the water inlet (3) is fixedly connected to the inner surface of the main body (1); Screening assembly (4): The screening assembly (4) is arranged inside the main body (1), and the screening assembly (4) includes: Filter plate (401): the filter plate (401) is arranged inside the main body (1); Sliding groove (402): There are two sliding grooves (402), both of which are opened on the inner wall of the main body (1), and the inner wall of the sliding groove (402) is slidably connected to the outer surface of the filter plate (401); Sliding rods (403): Two sliding rods (403) are provided, and both left and right ends of the two sliding rods (403) are fixedly connected to the inner wall of the sliding groove (402), and the sliding rods (403) pass through the interior of the filter plate (401); Pressure relief spring (404): There are two pressure relief springs (404), both of which are sleeved on the outer surface of the sliding rod (403), the left end face of the pressure relief spring (404) is fixedly connected to the inner wall of the sliding groove (402), and the right end face of the pressure relief spring (404) is fixedly connected to the left end face of the filter plate (401).

2. The coal mining wastewater discharge device according to claim 1, characterized in that: The right end surface of the filter plate (401) is provided with a pushing assembly (5), and the pushing assembly (5) comprises: Pushing plate (501): the left end surface of the pushing plate (501) contacts the right surface of the filter plate (401); Transmission block (502): the lower surface of the transmission block (502) is fixedly connected to the upper surface of the push plate (501); Threaded rod (503): The outer surface of the threaded rod (503) is connected to the interior of the transmission block (502) through threaded rotation, and the outer surface of the threaded rod (503) is provided with a driving assembly (6).

3. The coal mining wastewater discharge device according to claim 2, characterized in that: The driving assembly (6) comprises: Motor (601): the output end of the motor (601) is fixedly connected to the front end surface of the threaded rod (503); Support plate (602): the lower surface of the support plate (602) is fixedly connected to the upper surface of the filter plate (401); Fixing members (603): Three fixing members (603) are provided, the lower surfaces of the three fixing members (603) are fixedly connected to the upper surface of the support plate (602), the inner surface of the front fixing member (603) is fixedly connected to the outer surface of the motor (601), and the inner surface of the rear fixing member (603) is rotatably connected to the outer surface of the threaded rod (503) via a bearing.

4. A coal mining wastewater discharge device as claimed in claim 3, characterized in that: A transmission assembly (7) is provided on the outer surface of the output end of the motor (601), and the transmission assembly (7) comprises: Pulley (701): Two pulleys (701) are provided, and the two pulleys (701) are connected via a belt transmission, and the inner surface of the right pulley (701) is fixedly connected to the output end of the motor (601); Connecting rod (702): the front end surface of the connecting rod (702) is fixedly connected to the rear end surface of the pulley (701) on the left side; Fixed block (703): The inner surface of the fixed block (703) is rotatably connected to the outer surface of the connecting rod (702) via a bearing.

5. The coal mining wastewater discharge device according to claim 4, characterized in that: The left end surface of the connecting rod (702) is provided with a vibration assembly (8), and the vibration assembly (8) includes: Missing gear (801): the front surface of the missing gear (801) is fixedly connected to the rear end surface of the connecting rod (702); Tooth plate (802): the right end surface of the tooth plate (802) and the outer surface of the missing gear (801) are in a mutually meshing relationship; Pressing block (803): the upper end surface of the pressing block (803) is fixedly connected to the lower surface of the tooth plate (802); Travel groove (804): The travel groove (804) is opened on the upper surface of the support plate (602).

6. The coal mining wastewater discharge device according to claim 5, characterized in that: A telescopic assembly (9) is provided on the upper surface of the tooth plate (802), and the telescopic assembly (9) comprises: Telescopic column (901): the lower surface of the telescopic column (901) is fixedly connected to the upper surface of the tooth plate (802); Telescopic spring (902): the telescopic spring (902) is sleeved on the outer surface of the telescopic column (901), and the lower end surface of the telescopic spring (902) is fixedly connected to the upper surface of the tooth plate (802); "L"-shaped fixing plate (903): the lower surface of the "L"-shaped fixing plate (903) is fixedly connected to the upper surface of the support plate (602), the inner surface of the "L"-shaped fixing plate (903) is fixedly connected to the telescopic column (901) and the upper end surface of the telescopic spring (902), and the inner wall of the "L"-shaped fixing plate (903) is slidably connected to the rear end surface of the tooth plate (802).

7. The coal mining wastewater discharge device according to claim 1, characterized in that: The outer surface of the main body (1) is provided with a discharge port (10), and the discharge port (10) is fixedly connected to the outer surface of the main body (1).