An underground engineering construction waste mud treatment equipment

Abstract

This invention provides a waste mud treatment device for underground engineering construction, comprising a first treatment tank, a screen assembly connected to the first treatment tank, the screen assembly periodically rising and falling, a first agitator connected to the bottom of the screen assembly, the first treatment tank being used for flocculating the mud; a liquid separation and conveying assembly, including a conveying pipe connected to the discharge end of the first treatment tank, an auger connected inside the conveying pipe, and a liquid separation tank and a liquid squeezing tank sequentially connected in the extending direction of the conveying pipe, wherein a seepage element is provided at the connection end between the conveying pipe and the liquid separation tank, the discharge ends of both the liquid separation tank and the liquid squeezing tank are connected to the outside, an extrusion element is provided inside the liquid squeezing tank, and a discharge port is opened on the side wall of the liquid squeezing tank corresponding to the extrusion element; and a second treatment tank, connected to the discharge port, a second agitator connected inside the second treatment tank, the second treatment tank being used for solidifying the mud. This invention can improve mud treatment efficiency, reduce the use of solidifying agents, lower operating costs, and enhance economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of waste mud treatment technology, and in particular relates to a waste mud treatment device for underground engineering construction. Background Technology

[0002] Waste mud is the primary source of pollution during underground construction. Typically, waste mud is first excavated into a waste pit on the surface, then pumped out and discharged directly into the pit for natural settling. This method not only wastes land resources significantly but is also inefficient and time-consuming. Currently, a more effective method involves adding a solidifying agent to the waste mud to rapidly transform it into soil or solid particles. However, the high water content in waste mud necessitates a large amount of solidifying agent, increasing costs and limiting its practical application. Therefore, there is an urgent need for waste mud treatment equipment for underground engineering construction. Summary of the Invention

[0003] The purpose of this invention is to provide a waste mud treatment device for underground engineering construction to solve the above-mentioned problems, thereby improving mud treatment efficiency, reducing the use of solidifying agents, lowering operating costs, and enhancing economic benefits.

[0004] To achieve the above objectives, the present invention provides the following solution: a waste mud treatment device for underground engineering construction, comprising a first treatment tank, wherein a feed inlet is provided at the top of the first treatment tank.

[0005] A filter element is installed inside the first treatment box. The filter element includes a screen group that is connected to the first treatment box. The screen group is periodically raised and lowered. A first stirring element is connected to the bottom of the screen group. The first treatment box is used to flocculate the mud.

[0006] The liquid separation and conveying assembly includes a conveying pipe connected to the discharge end of the first processing tank. An auger is connected inside the conveying pipe. A liquid separation tank and a squeezing tank are connected sequentially in the extending direction of the conveying pipe. A seepage element is provided at the end of the conveying pipe that connects to the liquid separation tank. The discharge ends of both the liquid separation tank and the squeezing tank are connected to the outside. An extrusion element is provided inside the squeezing tank. A discharge port is opened on the side wall of the squeezing tank corresponding to the extrusion element.

[0007] The second processing box is connected to the discharge port, and a second stirring component is connected inside the second processing box. The second processing box is used to solidify the slurry.

[0008] Preferably, the screen assembly includes a first screen and a second screen arranged sequentially from top to bottom. A drive motor is fixedly connected to the top of the first processing box, and a rotating rod is fixedly connected to the output end of the drive motor. The rotating rod, the first screen, and the second screen are coaxially arranged. The rotating rod is rotatably connected to the first processing box. One end of the rotating rod extends into the first processing box, passes through the first screen, and is fixedly connected to the second screen. A transmission component is provided on the rotating rod and the first screen respectively. The first screen slides and rises and falls with the second screen through the transmission component.

[0009] Preferably, the transmission component includes a transmission thread fixedly connected to the rotating rod, a connecting seat is fixedly connected to the axis of the first screen, the connecting seat has a threaded groove corresponding to the transmission thread, one end of the transmission thread extends into the threaded groove and slides with the connecting seat, a guide rod is fixedly connected to the inner wall of the top of the first processing box, one end of the guide rod passes through the first screen and is fixedly connected to a limit ring, and the first screen slides with the guide rod.

[0010] Preferably, the first stirring component includes a plurality of first stirring rods fixedly connected to the rotating rod. The first stirring rods are arranged at equal intervals from top to bottom circumferentially on the rotating rod. A crushing roller is connected to the first stirring rod. A plurality of crushing cones are fixedly connected to the outer wall of the crushing roller. A discharge port is opened on one side of the bottom of the first processing box. The conveying pipe is fixedly connected in the discharge port and communicates with the first processing box.

[0011] Preferably, a rotating motor is fixedly connected to one end of the conveying pipe away from the first processing box, the auger is fixedly connected to the output end of the rotating motor, and openings are respectively opened on the side wall of the conveying pipe corresponding to the liquid distribution box and the liquid squeezing box. The seepage element is disposed in the opening corresponding to the liquid distribution box, and the seepage element blocks the opening.

[0012] Preferably, the seepage component includes a guide hopper fixed to the conveying pipe. The guide hopper has a conical structure. The larger end of the guide hopper is connected to the conveying pipe. A plurality of seepage holes are opened on the side wall of the conveying pipe corresponding to the guide hopper. A seepage filter screen is fixedly connected in the seepage hole. The smaller end of the guide hopper is connected to the liquid distribution tank. A filter suction tube is provided in the liquid distribution tank. One end of the filter suction tube extends out of the liquid distribution tank and communicates with the outside.

[0013] Preferably, the extrusion component includes a filter screen fixed inside the extrusion box. The extrusion box is divided into a discharge area and a discharge area by the filter screen. The discharge port is located on the side wall of the discharge area. The bottom edge of the discharge port is flush with the end face of the filter screen. A discharge pipe is provided on the side wall of the discharge area. One end of the discharge pipe is connected to the outside. A movable component is provided above the filter screen. The movable component is slidably connected to the extrusion box. One end of the movable component abuts against the filter screen.

[0014] Preferably, the movable component includes a servo motor fixed to the outer wall of the squeezing tank. The output shaft of the servo motor extends into the squeezing tank and is fixed to a cam. Two drive rods are driven and connected to the cam. One end of the drive rod is slidably connected to the squeezing tank, and the other end of the drive rod is fixed to a connecting rod. A pressing plate is connected to the end of the connecting rod near the filter screen, and a squeezing pad is fixed to the end of the pressing plate near the filter screen.

[0015] Preferably, a slider is fixed to the inner wall of the squeezing tank, and a sliding groove is formed on the side of the slider near the drive rod. One end of the drive rod extends into the sliding groove and is fixed to a limiting plate. A limiting groove is formed on the inner wall of the sliding groove corresponding to the limiting plate, and the limiting plate is slidably connected to the limiting groove.

[0016] Preferably, the second stirring component includes a fourth motor fixed to one side of the outer wall of the second processing tank. The output shaft of the fourth motor extends into the second processing tank and is fixed to a stirring roller. A transport pipe is connected to the side of the second processing tank near the squeezing tank. A conveyor belt is connected inside the transport pipe. A support plate is fixed to the outer wall of the discharge port corresponding to the end face of the conveyor belt.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] This invention utilizes a screen assembly within a first processing chamber to perform preliminary screening of underground slurry fed through the inlet, removing large particles of impurities. Simultaneously, the screen assembly periodically slides and rises as it connects to the first processing chamber, improving screening efficiency and reducing clogging of the screen openings. The filtered slurry falls to the bottom of the first processing chamber, where a first agitator stirs it. The flocculation effect of the first processing chamber ensures thorough mixing of the slurry and flocculant, enhancing the flocculation effect. The flocculated slurry-water mixture is then fed into a conveying pipe and transported via an auger. During the process, some of the water contained in the mud flows into the separating tank through the seepage component, while the remaining mud is fed into the squeezing tank. During this process, the auger screw rotation initially squeezes the mud to remove water. Then, after two drainage processes, the mud undergoes a third drainage and squeezing process in the squeezing tank. Under the action of the squeezing component, excess water is discharged. Finally, the flocculated mud with excess water removed is fed into the second treatment tank through the discharge port for solidification. The second mixing component improves the solidification and mixing effect, thereby improving mud treatment efficiency, removing excess water, reducing the amount of solidifying agent used, and improving economic benefits. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall device.

[0021] Figure 2 This is a side view of the squeezing tank;

[0022] Figure 3 for Figure 1 A magnified view of a section at point A;

[0023] Figure 4 for Figure 1 A magnified view of section B;

[0024] Figure 5 for Figure 1 A magnified view of section C;

[0025] The components include: 1. First processing box; 2. Screen assembly; 201. First screen; 202. Second screen; 3. Screwdriver; 4. Conveying pipe; 5. Separating tank; 6. Squeezing tank; 7. Second processing box; 8. Drive motor; 9. Rotating rod; 10. Transmission thread; 11. Connecting seat; 12. Guide rod; 13. Limiting ring; 14. First stirring rod; 15. Spring; 16. Crushing roller; 17. Rotating motor; 18. Material guide. 19. Bucket; 20. Percolation filter screen; 21. Filter suction pipe; 22. Filter screen; 23. Drain pipe; 24. Servo motor; 25. Cam; 26. Drive rod; 27. Pressing plate; 28. Squeezing pad; 29. ​​Slider; 30. Limiting plate; 31. Fourth motor; 32. Stirring roller; 33. Conveyor belt; 34. Transport pipe; 35. Support plate; 36. Flocculation box; 37. Solidification box; 38. Suction pump; 39. Connecting rod. Detailed Implementation

[0026] 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.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example:

[0029] Figure 1-5 This invention provides a waste mud treatment device for underground engineering construction, including a first treatment tank 1, with a feed inlet at the top of the first treatment tank 1.

[0030] A filter element is installed inside the first treatment box 1. The filter element includes a screen group 2 that is connected to the first treatment box 1. The screen group 2 is periodically raised and lowered. A first agitator is connected to the bottom of the screen group 2. The first treatment box 1 is used for flocculating mud.

[0031] The liquid separation and conveying assembly includes a conveying pipe 4 connected to the discharge end of the first processing tank 1. An auger 3 is connected inside the conveying pipe 4. A liquid separation tank 5 and a squeezing tank 6 are connected in sequence along the extension direction of the conveying pipe 4. A seepage element is provided at the connection end between the conveying pipe 4 and the liquid separation tank 5. The discharge ends of both the liquid separation tank 5 and the squeezing tank 6 are connected to the outside. An extrusion element is provided inside the squeezing tank 6. A discharge port is opened on the side wall of the squeezing tank 6 corresponding to the extrusion element.

[0032] The second processing box 7 is connected to the discharge port and contains a second mixing component. The second processing box 7 is used to solidify the slurry.

[0033] This invention utilizes a screen assembly 2 installed within a first processing tank 1 to perform preliminary screening of the underground mud introduced from the feed inlet, removing large particles of impurities. Simultaneously, the screen assembly 2 periodically slides and rises and falls while connecting to the first processing tank 1, improving screening efficiency and reducing clogging of the screen holes. This allows the filtered mud to fall to the bottom of the first processing tank 1, where a first agitator stirs it. The first processing tank 1 flocculates the mud, ensuring thorough mixing of the mud and flocculant, thus improving the flocculation effect. The flocculated mud-water mixture is then fed into a conveying pipe 4 and transported using an auger 3. During the conveying process… Part of the water in the mud flows into the separator 5 through the seepage component, while the remaining mud is fed into the squeezing tank 6. During this process, the auger 3 is used to initially squeeze the mud to remove water. After two drainage processes, the mud undergoes a third drainage and squeezing process in the squeezing tank 6. Under the action of the squeezing component, excess water is discharged to form solid mud. Finally, the flocculated mud with excess water removed is fed into the second treatment tank 7 through the discharge port for solidification. The second agitator is used to improve the solidification and mixing effect, thereby improving the mud treatment efficiency, removing excess water, reducing the amount of solidifying agent used, and improving economic benefits.

[0034] By fixing a flocculation box 35 to the outer wall of the first treatment box 1 and a solidification box 36 to the outer wall of the second treatment box 7, flocculants and solidifying agents are stored respectively. During the mud treatment process, the flocculants are introduced into the first treatment box 1 and the second treatment box 7 respectively. The underground mud is first subjected to flocculation, which breaks it down into mud water and flocculent matter. Then, the mud is drained, and the mud flocculent matter with excess water is mixed with the solidifying agent to form soil or solid particles, thereby achieving the overall treatment of waste mud and improving treatment efficiency.

[0035] Furthermore, the screen assembly 2 includes a first screen 201 and a second screen 202 arranged sequentially from top to bottom. A drive motor 8 is fixedly connected to the top of the first processing box 1, and a rotating rod 9 is fixedly connected to the output end of the drive motor 8. The rotating rod 9, the first screen 201, and the second screen 202 are coaxially arranged. The rotating rod 9 is rotatably connected to the first processing box 1. One end of the rotating rod 9 extends into the first processing box 1, passes through the first screen 201, and is fixedly connected to the second screen 202. The rotating rod 9 and the first screen 201 are respectively provided with a transmission component. The first screen 201 slides and rises and falls with the second screen 202 through the transmission component.

[0036] Furthermore, the transmission component includes a transmission thread 10 fixedly connected to the rotating rod 9, a connecting seat 11 fixedly connected to the axis of the first screen 201, the connecting seat 11 having a threaded groove corresponding to the transmission thread 10, one end of the transmission thread 10 extending into the threaded groove and threadedly connected to the connecting seat 11, a guide rod 12 fixedly connected to the inner wall of the top of the first processing box 1, one end of the guide rod 12 passing through the first screen 201 and fixedly connected to a limit ring 13, and the first screen 201 and the guide rod 12 slidingly connected.

[0037] When waste mud containing large sand and gravel particles is introduced into the first treatment tank 1, the drive motor 8 is started to drive the rotating rod 9 to rotate, which in turn drives the transmission thread 10 to rotate, causing the connecting seat 11 connected to it to rise and fall along the thread track. After rising to disengage from the transmission thread 10, it resets under the action of gravity until the next thread rotation and rise, realizing the periodic sliding rise and fall of the first screen 201. In order to ensure that the first screen 201 resets after rotating and rising, it is conceivable that the transmission thread 10 adopts a single helical structure, so that the connecting seat 11 can be re-inserted into the transmission thread 10 after disengaging from the transmission thread 10. When the transmission thread 10 continues to rotate until the next thread contact, it drives the transmission thread 10 to rise and fall.

[0038] In one embodiment of the present invention, a plurality of springs 15 are fixedly connected to the bottom end of the first screen 201, and the end of the spring 15 near the second screen 202 slides in contact with the second screen 202, thereby enhancing the vibration between the first screen 201 and the second screen 202 and providing an anti-blocking effect.

[0039] Furthermore, the first stirring component includes several first stirring rods 14 fixedly connected to the rotating rod 9. The first stirring rods 14 are arranged at equal intervals from top to bottom circumferentially on the rotating rod 9. A crushing roller 16 is connected to the first stirring rod 14. Several crushing cones are fixedly connected to the outer wall of the crushing roller 16. A discharge port is opened on one side of the bottom of the first processing box 1. The conveying pipe 4 is fixedly connected in the discharge port and communicates with the first processing box 1.

[0040] When the drive motor 8 drives the rotating rod 9 to rotate, several first stirring rods 14 rotate accordingly. During the rotation, the crushing roller 16 grinds and crushes the residual sand and gravel in the pre-filtered mud, thereby improving the flocculation treatment effect.

[0041] Furthermore, a rotating motor 17 is fixedly connected to one end of the conveying pipe 4 away from the first processing box 1, and the auger 3 is fixedly connected to the output end of the rotating motor 17. The side wall of the conveying pipe 4 is provided with openings corresponding to the liquid separation box 5 and the liquid squeezing box 6, respectively. The seepage element is set in the opening corresponding to the liquid separation box 5, and the seepage element seals the opening.

[0042] Furthermore, the seepage component includes a guide hopper 18 fixed to the conveying pipe 4. The guide hopper 18 has a conical structure. The larger end of the guide hopper 18 is connected to the conveying pipe 4. Several seepage holes are opened on the side wall of the conveying pipe 4 corresponding to the guide hopper 18. A seepage filter screen 19 is fixed in the seepage hole. The smaller end of the guide hopper 18 is connected to the liquid distribution tank 5. A filter suction pipe 20 is installed in the liquid distribution tank 5. One end of the filter suction pipe 20 extends out of the liquid distribution tank 5 and is connected to the outside.

[0043] When the screw conveyor 3 transports the flocculated mud-water mixture, the flocculated water in the mixture is passed through the seepage holes and the seepage filter screen 19 into the feed hopper 18, where it is deposited in the liquid distribution tank 5. Then, the deposited water is passed through the filter suction pipe 20. During the long-term mud treatment process, the fine mud and sand precipitated from the flocculated water accumulate in the liquid distribution tank 5. After a certain amount is reached, it is passed into the second treatment tank 7 for solidification treatment, which fully improves the mud treatment efficiency.

[0044] Furthermore, the extrusion component includes a filter screen 21 fixed inside the extrusion box 6. The extrusion box 6 is divided into a discharge area and a discharge area by the filter screen 21. The discharge port is located on the side wall of the discharge area. The bottom edge of the discharge port is flush with the end face of the filter screen 21. A discharge pipe 22 is provided on the side wall of the discharge area. One end of the discharge pipe 22 is connected to the outside. A movable component is provided above the filter screen 21. The movable component is slidably connected to the extrusion box 6. One end of the movable component abuts against the filter screen 21.

[0045] Furthermore, the movable component includes a servo motor 23 fixed to the outer wall of the squeezing tank 6. The output shaft of the servo motor 23 extends into the squeezing tank 6 and is fixed to a cam 24. Two drive rods 25 are driven and connected to the cam 24. One end of the drive rod 25 is slidably connected to the squeezing tank 6, and the other end of the drive rod 25 is fixed to a connecting rod 38. A pressing plate 26 is connected to the end of the connecting rod 38 near the filter screen 21. A pressing pad 27 is fixed to the end of the pressing plate 26 near the filter screen 21.

[0046] Reference Figure 1-2 After the flocculated slurry is initially squeezed and drained by the screw conveyor 3, it is fed into the squeezing tank 6. The servo motor 23 is turned on to drive the cam 24 to rotate, which drives the two drive rods 25 to slide back and forth along the squeezing tank 6. This causes the connecting rod 38 fixed on the drive rod 25 and the pressing plate 26 connected on the connecting rod 38 to slide back and forth. When the pressing plate 26 comes into contact with the filter screen 21, the water in the slurry fed into the squeezing tank 6 is squeezed out.

[0047] Furthermore, the filter screen 21 is tilted, with its lower end corresponding to the discharge port, so that the slurry can be passed into the second treatment box 7 for subsequent solidification.

[0048] Furthermore, a slider 28 is fixedly connected to the inner wall of the squeezing tank 6. A sliding groove is opened on the side of the slider 28 near the drive rod 25. One end of the drive rod 25 extends into the sliding groove and is fixedly connected to a limiting plate 29. A limiting groove is opened on the inner wall of the sliding groove corresponding to the limiting plate 29. The limiting plate 29 and the limiting groove are slidably connected.

[0049] The slider 28 is fixed by the corresponding drive rod 25. The drive rod 25 extends into the groove opened on the slider 28 and is limited and slidably connected to the slider 28 by the limiting plate 29 and the limiting groove. The two drive rods 25 are respectively connected to the tip of one tooth of the cam 24 and the connection point of the other two teeth. When the cam 24 rotates, the drive rod 25 located at the connection point is squeezed by the connected teeth. The other drive rod 25 loses the abutting effect of the tip of the adjacent tooth and is thus driven by the drive rod 25 at the connection point. The cam 24 rotates repeatedly to realize the reciprocating sliding of the drive rod 25.

[0050] Furthermore, the second stirring component includes a fourth motor 30 fixed to one side of the outer wall of the second processing tank 7. The output shaft of the fourth motor 30 extends into the second processing tank 7 and is fixed to a stirring roller 31. A transport pipe 33 is connected to the side of the second processing tank 7 near the squeezing tank 6. A conveyor belt 32 is connected inside the transport pipe 33. A support plate 34 is fixed to the outer wall of the discharge port corresponding to the end face of the conveyor belt 32.

[0051] After being squeezed and drained, the sludge falls onto the transmission belt through the support plate 34. Under the action of the transmission belt, it enters the second treatment tank 7. Then, a curing agent is introduced into the second treatment tank 7. Driven by the fourth motor 30, the stirring roller 31 rotates to mix the curing agent with the sludge, thus completing the entire waste sludge treatment operation.

[0052] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0053] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for treating construction waste mud from underground engineering projects, characterized in that: It includes a first processing box (1), and the top of the first processing box (1) is provided with a feed inlet; A filter element is installed inside the first treatment box (1). The filter element includes a screen group (2) that is connected to the first treatment box (1). The screen group (2) is periodically raised and lowered. A first stirring element is connected to the bottom of the screen group (2). The first treatment box (1) is used to flocculate mud. The liquid separation and conveying assembly includes a conveying pipe (4) connected to the discharge end of the first processing tank (1), a screw conveyor (3) is connected inside the conveying pipe (4), and a liquid separation tank (5) and a liquid squeezing tank (6) are connected in sequence along the extension direction of the conveying pipe (4). The end of the conveying pipe (4) connected to the liquid separation tank (5) is provided with a seepage element. The discharge ends of the liquid separation tank (5) and the liquid squeezing tank (6) are both connected to the outside. The liquid squeezing tank (6) is provided with a squeezing element, and a discharge port is opened on the side wall of the liquid squeezing tank (6) corresponding to the squeezing element. The second processing box (7) is connected to the discharge port. The second processing box (7) is equipped with a second stirring component and is used to solidify the slurry. The screen assembly (2) includes a first screen (201) and a second screen (202) arranged sequentially from top to bottom. A drive motor (8) is fixedly connected to the top of the first processing box (1). A rotating rod (9) is fixedly connected to the output end of the drive motor (8). The rotating rod (9), the first screen (201), and the second screen (202) are coaxially arranged. The rotating rod (9) is rotatably connected to the first processing box (1). One end of the rotating rod (9) extends into the first processing box (1), passes through the first screen (201), and is fixedly connected to the second screen (202). A transmission component is provided corresponding to the rotating rod (9) and the first screen (201). The first screen (201) slides and rises and falls with the second screen (202) through the transmission component. The transmission component includes a transmission thread (10) fixedly connected to the rotating rod (9). A connecting seat (11) is fixedly connected to the axis of the first screen (201). The connecting seat (11) and the transmission thread (10) are respectively provided with threaded grooves. One end of the transmission thread (10) extends into the threaded groove and slides with the connecting seat (11). A guide rod (12) is fixedly connected to the inner wall of the top of the first processing box (1). One end of the guide rod (12) passes through the first screen (201) and is fixedly connected to a limit ring (13). The first screen (201) slides with the guide rod (12). The transmission thread (10) adopts a single helix structure. The first stirring component includes several first stirring rods (14) fixedly connected to the rotating rod (9). The first stirring rods (14) are arranged at equal intervals from top to bottom circumferentially on the rotating rod (9). A crushing roller (16) is connected to the first stirring rod (14). Several crushing cones are fixedly connected to the outer wall of the crushing roller (16). A discharge port is opened on one side of the bottom of the first processing box (1). The conveying pipe (4) is fixedly connected in the discharge port and communicates with the first processing box (1).

2. The underground engineering construction waste mud treatment equipment according to claim 1, characterized in that: A rotating motor (17) is fixedly connected to one end of the conveying pipe (4) away from the first processing box (1). The auger (3) is fixedly connected to the output end of the rotating motor (17). The side wall of the conveying pipe (4) is provided with openings corresponding to the liquid distribution box (5) and the liquid squeezing box (6). The seepage element is set in the opening corresponding to the liquid distribution box (5) and the seepage element seals the opening.

3. The underground engineering construction waste mud treatment equipment according to claim 1, characterized in that: The seepage component includes a guide hopper (18) fixed to the conveying pipe (4). The guide hopper (18) has a conical structure. The larger end of the guide hopper (18) is connected to the conveying pipe (4). The side wall of the conveying pipe (4) is provided with a plurality of seepage holes corresponding to the guide hopper (18). A seepage filter screen (19) is fixed in the seepage hole. The smaller end of the guide hopper (18) is connected to the liquid separator (5). A filter suction tube (20) is provided in the liquid separator (5). One end of the filter suction tube (20) extends out of the liquid separator (5) and is connected to the outside.

4. The underground construction waste mud treatment apparatus according to claim 1, characterized by: The extrusion component includes a filter screen (21) fixed inside the extrusion box (6). The extrusion box (6) is divided into a discharge area and a discharge area by the filter screen (21). The discharge port is located on the side wall of the discharge area. The bottom edge of the discharge port is flush with the end face of the filter screen (21). A discharge pipe (22) is provided on the side wall of the discharge area. One end of the discharge pipe (22) is connected to the outside. A movable component is provided above the filter screen (21). The movable component is slidably connected to the extrusion box (6). One end of the movable component abuts against the filter screen (21).

5. The underground construction waste mud treatment apparatus according to claim 4, characterized by: The movable component includes a servo motor (23) fixed to the outer wall of the squeezing tank (6). The output shaft of the servo motor (23) extends into the squeezing tank (6) and is fixed to a cam (24). Two drive rods (25) are connected to the cam (24). One end of the drive rod (25) is slidably connected to the squeezing tank (6), and the other end of the drive rod (25) is fixed to a connecting rod (38). A pressing plate (26) is connected to one end of the connecting rod (38) near the filter screen (21), and a pressing pad (27) is fixed to one end of the pressing plate (26) near the filter screen (21).

6. The underground construction waste mud treatment apparatus according to claim 5, characterized by: A slider (28) is fixed to the inner wall of the squeezing tank (6). A sliding groove is provided on the side of the slider (28) near the drive rod (25). One end of the drive rod (25) extends into the sliding groove and is fixed to a limiting plate (29). A limiting groove is provided on the inner wall of the sliding groove corresponding to the limiting plate (29). The limiting plate (29) is slidably connected to the limiting groove.

7. The underground construction waste mud treatment apparatus according to claim 1, characterized by: The second stirring component includes a fourth motor (30) fixed to one side of the outer wall of the second processing tank (7). The output shaft of the fourth motor (30) extends into the second processing tank (7) and is fixed to a stirring roller (31). A transport pipe (33) is connected to the side of the second processing tank (7) near the squeezing tank (6). A conveyor belt (32) is connected inside the transport pipe (33). A support plate (34) is fixed to the outer wall of the discharge port corresponding to the end face of the conveyor belt (32).

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