Water conservancy construction slurry sedimentation tank

Abstract

The application relates to the technical field of water conservancy construction sewage treatment equipment, in particular to a water conservancy construction slurry sedimentation tank which comprises a water inlet pool, a sedimentation tank and a clean water pool arranged in sequence; a first partition plate with a grading communication hole is arranged between the water inlet pool and the sedimentation tank; a rotating mud scraping mechanism containing a driving motor, a mud scraping shaft and a mud scraping frame is arranged in the sedimentation tank; a sewage discharge port is arranged at the bottom of the water inlet pool; and a water discharge port is arranged at the bottom of the clean water pool. A dosing device, a sewage collecting bucket, a closed baffle and a filter frame can be selected and matched. According to the scheme, the sedimentation efficiency is improved through grading flow guide and automatic mud scraping, optional components are matched with different working conditions, efficient purification of the mud-containing wastewater is realized, the continuous treatment demand of large-scale water conservancy construction is met, and practicability and flexibility are combined.

Description

Technical Field

[0001] This application relates to the technical field of sewage treatment equipment for water conservancy construction, and in particular to a sludge sedimentation tank for water conservancy construction. Background Technology

[0002] During water conservancy construction, operations such as river dredging, dam construction, and foundation pit excavation continuously generate a large amount of muddy wastewater. If this wastewater is discharged directly without treatment, it will pollute the surrounding water environment and may also clog drainage pipes due to mud deposition, affecting the construction progress. If treatment is required, the mud sedimentation tanks commonly used in existing water conservancy construction are mostly single-tank structures that rely solely on gravity to achieve mud sedimentation. This results in low sedimentation efficiency and cannot meet the continuous treatment needs of large-scale water conservancy construction.

[0003] Therefore, a slurry sedimentation tank for hydraulic construction is invented to solve the problems mentioned in the background technology. Utility Model Content

[0004] The purpose of this utility model is to overcome the technical defects of existing hydraulic construction mud sedimentation tanks, which have "low sedimentation efficiency and cannot meet the continuous treatment needs of large-scale hydraulic construction", and to provide a hydraulic construction mud sedimentation tank.

[0005] This application provides a slurry sedimentation tank for hydraulic construction, employing the following technical solution: it includes an inlet tank, a sedimentation tank, and a purification tank. A first partition is provided between the inlet tank and the sedimentation tank. The first partition has multiple connecting holes of different diameters, which are vertically divided into upper and lower connecting holes, forming a graded water flow channel. A rotating sludge scraping mechanism is provided inside the sedimentation tank. The rotating sludge scraping mechanism includes a drive motor and a scraper shaft connected to the drive motor. The scraper shaft is located inside the sedimentation tank, and a scraper frame is provided around its periphery. The end of the scraper frame contacts the cylindrical wall of the sedimentation tank. A sewage outlet is provided at the bottom of the inlet tank, and a drainage outlet is provided at the bottom of the purification tank.

[0006] Optionally, a dosing device is provided above the water inlet tank. The dosing device includes a dosing tank, and a control valve is provided at the bottom of the dosing tank.

[0007] Optionally, the diameter of the upper connecting hole is larger than that of the lower connecting hole.

[0008] Optionally, the sedimentation tank is provided with a sludge collection hopper at the bottom, the sludge collection hopper being funnel-shaped and having a sludge discharge port at its bottom.

[0009] Optionally, a connecting channel is provided between the sedimentation tank and the water purification tank, and a sealing baffle is provided to close the connecting channel. The sealing baffle is slidably connected to the water purification tank, and a rotating screw is rotatably provided on the top of the water purification tank. The rotating screw is threadedly connected to the sealing baffle, and a wheel is provided on the top of the rotating screw.

[0010] Optionally, a filter frame is provided in the water purification tank, and multiple layers of inclined filter screens are provided on the filter frame, with the filter screens being detachably connected to the filter frame.

[0011] Optionally, a rotatable stirring shaft is provided in the water inlet tank, and stirring blades are provided on the stirring shaft. A stirring motor is provided at the top of the water inlet tank, and the output end of the stirring motor is fixedly connected to the stirring shaft.

[0012] In summary, this application includes the following beneficial technical effects: 1. Significantly improve sedimentation efficiency: The graded interconnecting holes of the first baffle (large-diameter upper layer suitable for high-velocity, high-mud-content water flow, and small-diameter lower layer suitable for low-velocity, low-mud-content water flow) can prevent turbulence from forming during water inflow and reduce the agitation of already deposited sludge; optional dosing devices and stirring components can be used to promote sludge particle aggregation and shorten sedimentation time. Compared with existing single-tank sedimentation tanks, it can quickly treat mud-containing wastewater generated by large-scale water conservancy construction.

[0013] 2. Achieve continuous and stable operation: The rotary sludge scraping mechanism drives the sludge scraper frame to automatically scrape sludge through the drive motor. The end of the sludge scraper frame is in contact with the wall of the sedimentation tank, and the sludge is scraped thoroughly without the need for manual shutdown for cleaning, effectively solving the problem of "cleaning shutdown affecting processing efficiency" in existing equipment.

[0014] 3. Ensure water quality and recycling: The optional multi-layer inclined filter screen (removable) in the water purification tank can filter out the fine mud particles remaining in the water, which greatly reduces the suspended solids content of the purified water. The purified water that meets the standards can be directly recycled for construction water such as concrete pouring and equipment cleaning, reducing water waste; it can also be directly discharged to avoid environmental pollution.

[0015] 4. Enhanced flexibility of use: Dosing devices, sludge collection hoppers, enclosed baffles, filter frames, etc. are all optional components, which can be flexibly selected and activated according to the actual concentration of muddy wastewater and treatment volume requirements of the construction, adapting to different water conservancy construction scenarios such as river dredging, dam construction, and foundation pit excavation, reducing unnecessary operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device. Figure I ; Figure 2 This is a top view of the device; Figure 3This is the front view of the device; Figure 4 This is a cross-sectional schematic diagram of the overall structure of this device; Figure 5 This is a schematic diagram of the sedimentation tank of this device; Figure 6 This is a schematic diagram of the water purification tank of this device; Among them, 1. Inlet tank, 2. Sedimentation tank, 3. Purified water tank, 4. First partition, 5. Upper connecting hole, 6. Upper connecting hole, 7. Lower connecting hole, 8. Rotary sludge scraping mechanism, 9. Drive motor, 10. Sludge scraping shaft, 11. Sludge scraping frame, 12. Sewage outlet, 13. Drainage outlet, 14. Dosing device, 15. Dosing tank, 16. Control valve, 17. Sludge collection hopper, 18. Sludge discharge port, 19. Connecting channel, 20. Sealing baffle, 21. Rotating screw, 22. Rotary wheel, 23. Filter frame, 24. Filter screen, 25. Stirring shaft, 26. Stirring blades, 27. Stirring motor. Detailed Implementation

[0017] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 the present utility model 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 the present utility model.

[0018] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5One embodiment is shown: the hydraulic construction mud sedimentation tank 2 includes an inlet tank 1, a sedimentation tank 2, and a purification tank 3, arranged sequentially in a horizontal direction. The inlet tank 1 is located to the left of the sedimentation tank 2, and the purification tank 3 is located to the right of the sedimentation tank 2. The bottoms of all three tanks are fixedly connected to the ground. In this embodiment, a first partition 4 is bolted between the inlet tank 1 and the sedimentation tank 2. The height of the first partition 4 is the same as the height of the tank walls of the inlet tank 1 and the sedimentation tank 2. Multiple connecting holes 5 are evenly distributed vertically and horizontally on the first partition 4. The connecting holes 5 located in the upper half of the first partition 4 are upper connecting holes 6, and the connecting holes 5 located in the lower half of the first partition 4 are lower connecting holes 7. The upper connecting holes 6 and the lower connecting holes 7 are spaced apart vertically to form a graded water flow channel. The drive motor 9 in the rotating sludge scraping mechanism 8 is bolted... The sludge scraper 10 is fixedly installed at the top of the right outer wall of the sedimentation tank 2. It is vertically installed inside the sedimentation tank 2. The two ends of the sludge scraper 10 are rotatably connected to the left inner wall of the sedimentation tank 2 through deep groove ball bearings. After the top of the sludge scraper 10 extends out of the sedimentation tank 2, it is fixedly connected to the output end of the drive motor 9 through a flexible coupling. Two sludge scraper frames 11 are welded radially around the circumference of the sludge scraper 10. Each sludge scraper frame 11 has a rubber scraper welded to its end away from the sludge scraper 10. The rubber scraper is in close contact with the inner wall of the sedimentation tank 2 to ensure that there are no dead corners in the sludge scraping. A sewage outlet 12 is opened through the center of the bottom of the water inlet tank 1. A sewage pipe is welded to the sewage outlet 12 and a shut-off valve is installed on the sewage pipe. A drain outlet 13 is opened through the bottom of the water purification tank 3 near the right edge. A drain pipe is welded to the drain outlet 13 and a gate valve is installed on the drain pipe.

[0019] The implementation principle is as follows: The muddy wastewater first enters the inlet pool 1 on the left, and then enters the sedimentation tank 2 in the middle through the upper connecting hole 6 and the lower connecting hole 7 on the first partition 4. The upper connecting hole 6 is adapted to the water flow with a faster flow rate and higher mud content in the inlet pool 1, and the lower connecting hole 7 is adapted to the water flow with a slower flow rate and lower mud content in the inlet pool 1, so as to avoid the water flow directly impacting the mud already deposited at the bottom of the sedimentation tank 2. The drive motor 9 is started, and the drive motor 9 drives the scraper shaft 10 to rotate around its own axis. The scraper shaft 10 drives the scraper frame 11 to rotate synchronously. The rubber scraper at the end of the scraper frame 11 slides along the inner wall of the sedimentation tank 2, scraping the mud deposited at the bottom of the sedimentation tank 2 towards the area between the inlet pool 1 and the sedimentation tank 2, and finally discharged through the sewage outlet 12 at the bottom of the inlet pool 1. The clear water after sedimentation in the sedimentation tank 2 enters the purification water tank 3 on the right, and is then discharged through the drain outlet 13 at the bottom of the purification water tank 3, so as to realize the sedimentation and purification of the muddy wastewater.

[0020] Reference Figure 1 , Figure 2One embodiment is shown as follows: A dosing device 14 is installed above the inlet pool 1 of the hydraulic construction mud sedimentation tank 2. The dosing device 14 includes a dosing tank 15 and a support plate. In this embodiment, the support plate is fixedly installed on the top of the inlet pool 1 by expansion bolts, and the bottom of the dosing tank 15 is fixedly installed on the upper surface of the support plate by bolts. A dosing outlet is opened through the center of the bottom of the dosing tank 15. The inner wall of the dosing outlet is machined with internal threads. The control valve 16 is a ball valve. The ball valve is fixedly connected to the dosing outlet of the dosing tank 15 by threads. A dosing pipe is welded to the water outlet end of the ball valve. The lower end of the dosing pipe extends into the interior of the inlet pool 1, and the lower end opening of the dosing pipe faces the bottom of the inlet pool 1.

[0021] The implementation principle is as follows: When the mud-containing wastewater in the inlet pool 1 has a high mud concentration or the mud particles are fine, the control valve 16 at the bottom of the dosing tank 15 is opened. The flocculant pre-stored in the dosing tank 15 flows into the inlet pool 1 through the outlet and the outlet pipe. The flocculant mixes with the mud-containing wastewater in the inlet pool 1, promoting the agglomeration of mud particles to form larger flocs, accelerating the sedimentation speed in the subsequent sedimentation tank 2, and improving the sedimentation efficiency. By adjusting the opening of the control valve 16, the amount of flocculant added can be controlled to adapt to the wastewater treatment needs of different mud concentrations.

[0022] Reference Figure 5 One embodiment shown is as follows: the upper connecting hole 6 and the lower connecting hole 7 on the first partition 4 of the hydraulic construction mud sedimentation tank 2 are both circular holes; in this embodiment, the diameter of the upper connecting hole 6 is set to 50mm, the diameter of the lower connecting hole 7 is set to 30mm, the upper connecting hole 6 is evenly distributed in the upper half of the first partition 4 along the horizontal direction, and the lower connecting hole 7 is evenly distributed in the lower half of the first partition 4 along the horizontal direction.

[0023] The implementation principle is as follows: Since the upper connecting hole 6 has a larger diameter, when the water flow velocity in the inlet pool 1 is fast and the mud content is high, the water can quickly enter the sedimentation tank 2 through the upper connecting hole 6, avoiding accumulation in the inlet pool 1; the lower connecting hole 7 has a smaller diameter, when the water flow velocity in the inlet pool 1 slows down and the mud content decreases, the water flows slowly through the lower connecting hole 7 into the sedimentation tank 2, reducing the impact of the water flow on the mud at the bottom of the sedimentation tank 2; through the graded guidance of the connecting holes 5 with different diameters, it is ensured that the water flow in the sedimentation tank 2 always maintains a stable state, thus improving the sedimentation effect.

[0024] Reference Figure 1 , Figure 4One embodiment shown is as follows: A sludge collection hopper 17 is provided at the bottom of the sedimentation tank 2 of the hydraulic construction mud sedimentation tank 2; in this embodiment, the sludge collection hopper 17 is made of stainless steel and is in the shape of an inverted conical funnel. The top opening diameter of the sludge collection hopper 17 is the same as the bottom inner diameter of the sedimentation tank 2. The top edge of the sludge collection hopper 17 is fixedly connected to the bottom edge of the sedimentation tank 2 by continuous welding, and the weld is sealed with anti-corrosion coating; a sludge discharge port 18 is opened vertically through the lowest point of the bottom of the sludge collection hopper 17. A sludge discharge pipe is welded to the sludge discharge port 18. A pneumatic butterfly valve is fixedly installed on the sludge discharge pipe by a flange. The pneumatic butterfly valve is electrically connected to an external control system, which can realize automatic control of sludge discharge.

[0025] The implementation principle is as follows: the sludge scraped off by the rotating sludge scraping mechanism 8 slides down the inner wall of the sedimentation tank 2 under the action of gravity into the bottom sludge collection hopper 17. Since the sludge collection hopper 17 is funnel-shaped, the sludge will automatically collect at the lowest point of the bottom in the sludge collection hopper 17. When the sludge in the sludge collection hopper 17 accumulates to the preset amount, the pneumatic butterfly valve is opened through the external control system, and the collected sludge is discharged through the sludge discharge port 18 and the sludge discharge pipe. Compared with the sludge being discharged directly through the sewage discharge port 12 of the inlet pool 1, the sludge residue in the sedimentation tank 2 can be reduced, the sludge discharge efficiency can be improved, and the sludge can be prevented from flowing back into the inlet pool 1 and affecting the quality of the inlet water.

[0026] Reference Figure 5 , Figure 6 One embodiment is shown as follows: a connecting channel 19 and a closed baffle 20 are provided between the sedimentation tank 2 and the water purification tank 3 in the hydraulic construction mud sedimentation tank 2; in this embodiment, the sedimentation tank 2 is located on the left side and the water purification tank 3 is located on the right side; two T-shaped grooves are symmetrically opened in the vertical direction on the inner side wall of the left side of the water purification tank 3 (i.e., the right side wall that shares the tank wall with the sedimentation tank 2), the two grooves are located on the front and rear sides of the connecting channel 19 respectively, and the length of the grooves extends from the top of the water purification tank 3 to the bottom of the water purification tank 3; the closed baffle 20 is a rectangular steel plate, and the front and rear edges of the closed baffle 20 are processed into T-shaped grooves to fit the T-shaped grooves. A slider is embedded in a groove, allowing the closed baffle 20 to slide up and down along the groove. The height of the closed baffle 20 is greater than the height of the connecting channel 19. When the closed baffle 20 slides down to its lowest position, it can completely block the connecting channel 19. A rotating screw 21 is vertically installed inside the water purification tank 3 and located to the right of the closed baffle 20. The lower end of the rotating screw 21 is rotatably connected to the bottom inner wall of the water purification tank 3 through a thrust bearing. A threaded hole is vertically opened in the middle of the closed baffle 20, and the rotating screw 21 passes through the threaded hole. The two are connected by trapezoidal thread engagement. A rotating wheel 22 is welded to the top of the rotating screw 21. The circumference of the rotating wheel 22 is machined with anti-slip textures to facilitate rotation by the operator.

[0027] The implementation principle is as follows: When it is necessary to adjust the water supply speed from sedimentation tank 2 to water purification tank 3, the operator rotates the rotating wheel 22 on the top of water purification tank 3. The rotating wheel 22 drives the rotating screw 21 to rotate around its own axis. Since the rotating screw 21 is connected to the closed baffle 20 by threaded engagement, and the closed baffle 20 is restricted from rotating by the sliding groove, the rotational motion of the rotating screw 21 is converted into the up-and-down linear motion of the closed baffle 20. When the closed baffle 20 slides upward, the opening area of ​​the connecting channel 19 increases, and the speed at which the clear water in sedimentation tank 2 flows into water purification tank 3 increases. When the closed baffle 20 slides downward, the opening area of ​​the connecting channel 19 decreases, and the speed at which the clear water flows into water purification tank 3 decreases. When the closed baffle 20 slides down to completely block the connecting channel 19, the water supply from sedimentation tank 2 to water purification tank 3 can be stopped, which facilitates the maintenance and cleaning of water purification tank 3, realizes flexible control of the water supply speed, and avoids the clear water flowing in too quickly, which would cause water flow disturbance in water purification tank 3.

[0028] Reference Figure 1 , Figure 4 One embodiment is shown as follows: A filter frame 23 and a filter screen 24 are installed in the water purification tank 3 of the hydraulic construction mud sedimentation tank 2. In this embodiment, the filter frame 23 is fixedly installed in the water purification tank 3 by expansion bolts. Four layers of filter screens 24 are inclined on the filter frame 23 along the water flow direction (from left to right), and the distance between two adjacent layers of filter screens 24 is 200mm. The filter frame 23 has a slot, and the filter screen is fixed by inserting it into the filter frame 23 through the slot. Each layer of filter screen 24 has a pull ring at the top, and the filter screen 24 is detachably connected to the filter frame 23 through the pull ring.

[0029] The implementation principle is as follows: After the clear water in the sedimentation tank 2 enters the water purification tank 3 through the connecting channel 19, it first flows to the filter frame 23 on the left and passes through the inclined filter screen 24 in sequence. Because the filter screen 24 is inclined, the water stays on the filter screen 24 for a longer time, and the filter screen 24 can intercept the fine mud particles remaining in the water. After the filter screen 24 has been used for a period of time, the operator can pull the filter screen 24 out of the filter frame 23.

[0030] Reference Figure 5One embodiment is shown: a stirring shaft 25 and stirring blades 26 are installed in the inlet pool 1 of the hydraulic construction mud sedimentation tank 2; in this embodiment, the inlet pool 1 has a cuboid structure, the stirring shaft 25 is arranged horizontally in the front and back direction inside the inlet pool 1, and the stirring shaft 25 is located in the lower middle part of the inlet pool 1; the front end of the stirring shaft 25 is rotatably connected to the inner front wall of the inlet pool 1 through a self-aligning roller bearing, the outer ring of the bearing is welded and fixed to the inner front wall of the inlet pool 1, and the inner ring of the bearing is interference-fitted with the front end of the stirring shaft 25; two radially welded blades are present on the circumference of the stirring shaft 25. The stirring blades 26 are evenly distributed in the axial direction of the stirring shaft 25. Each set of stirring blades 26 consists of two mutually perpendicular blades. The blades are rectangular and the edges of the blades are polished smooth. The stirring motor 27 is fixedly installed on the rear side of the top of the water inlet tank 1 by bolts. The output end of the stirring motor 27 faces downward. The output end of the stirring motor 27 is fixedly connected to the rear end of the stirring shaft 25 through a plum blossom coupling. The rear end of the stirring shaft 25 passes through the mounting hole on the rear wall of the water inlet tank 1, and the stirring shaft 25 and the mounting hole are connected to each other by a mechanical seal.

[0031] The implementation principle is as follows: After the dosing device 14 adds flocculant to the inlet pool 1, the stirring motor 27 at the top of the inlet pool 1 is started. The stirring motor 27 drives the stirring shaft 25 to rotate around its own axis, and the stirring shaft 25 drives the stirring blades 26 on the periphery to rotate synchronously. During the rotation, the stirring blades 26 fully stir and mix the muddy wastewater and flocculant in the inlet pool 1, so that the flocculant is evenly dispersed in the wastewater and fully contacts the mud particles, promoting the rapid aggregation of mud particles to form larger flocs. Compared with natural mixing, stirring can significantly shorten the mixing time, improve the flocculation effect, lay the foundation for the rapid sedimentation of the subsequent sedimentation tank 2, and avoid the waste or uneven mixing caused by local accumulation of flocculant.

[0032] The working principle of this device is as follows: Sludge-laden wastewater first enters the inlet tank 1. If the sludge concentration is high, flocculant is added via the dosing device 14. The stirring motor 27 drives the stirring shaft 25 and blades to stir, mixing the flocculant with the wastewater and promoting sludge agglomeration. Subsequently, the wastewater enters the sedimentation tank 2 through the first baffle 4 and the staged connecting holes 5. The upper layer with large-diameter holes guides high-velocity, high-sludge-laden water flow, while the lower layer with small-diameter holes guides low-velocity, low-sludge-laden water flow, avoiding impact on the sludge at the bottom of the tank. Inside the sedimentation tank 2, the drive motor 9 drives the scraper shaft 10 and scraper frame 11 to rotate. The scraper at the end of the scraper frame 11 scrapes the sludge at the bottom of the tank to the collection hopper 17 (or the discharge port 12 of the inlet tank 1), and the sludge is discharged through the discharge port 18. After sedimentation, the clear water enters the water purification tank 3 through the connecting channel 19. The water conveyance speed is controlled by rotating the wheel 22 and adjusting the closed baffle 20. The clear water is filtered through the multi-layer inclined filter screen 24 in the water purification tank 3, and finally the qualified purified water is discharged from the drain outlet 13, realizing the purification treatment of muddy wastewater.

[0033] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A sedimentation tank for hydraulic construction mud, characterized in that: The system includes an inlet pool (1), a sedimentation pool (2), and a purification pool (3). A first partition (4) is provided between the inlet pool (1) and the sedimentation pool (2). The first partition (4) has multiple connecting holes (5) with different diameters. The connecting holes (5) are divided into upper connecting holes (6) and lower connecting holes (7) in the vertical direction to form a graded water flow channel. A rotating sludge scraping mechanism (8) is provided in the sedimentation pool (2). The rotating sludge scraping mechanism (8) includes a drive motor (9) and a scraper shaft (10) connected to the drive motor (9). The scraper shaft (10) is located in the sedimentation pool (2) and a scraper frame (11) is provided on its periphery. The end of the scraper frame (11) is in contact with the cylindrical wall of the sedimentation pool (2). A sewage outlet (12) is provided at the bottom of the inlet pool (1), and a drain outlet (13) is provided at the bottom of the purification pool (3).

2. The hydraulic construction mud sedimentation tank according to claim 1, characterized in that: A dosing device (14) is provided above the water inlet pool (1). The dosing device (14) includes a dosing tank (15), and a control valve (16) is provided at the bottom of the dosing tank (15).

3. A sedimentation tank for hydraulic construction mud according to claim 1, characterized in that: The diameter of the upper connecting hole (6) is larger than that of the lower connecting hole (7).

4. A sedimentation tank for hydraulic construction mud according to claim 1, characterized in that: The sedimentation tank (2) is provided with a sludge collection hopper (17) at the bottom. The sludge collection hopper (17) is funnel-shaped and has a sludge discharge port (18) at its bottom.

5. A sedimentation tank for hydraulic construction mud according to claim 1, characterized in that: A connecting channel (19) is provided between the sedimentation tank (2) and the water purification tank (3), and a sealing baffle (20) is provided to close the connecting channel (19). The sealing baffle (20) is slidably connected to the water purification tank (3). A rotating screw (21) is rotatably provided on the top of the water purification tank (3). The rotating screw (21) and the sealing baffle (20) are connected by a thread. A rotating wheel (22) is provided on the top of the rotating screw (21).

6. A sedimentation tank for hydraulic construction mud according to claim 1, characterized in that: The water purification tank (3) is equipped with a filter frame (23), and the filter frame (23) is equipped with multiple layers of inclined filter screens (24), which are detachably connected to the filter frame (23).

7. A sedimentation tank for hydraulic construction mud according to claim 1, characterized in that: The water inlet pool (1) is equipped with a rotatable stirring shaft (25), and stirring blades (26) are provided on the stirring shaft (25). A stirring motor (27) is provided on the top of the water inlet pool (1), and the output end of the stirring motor (27) is fixedly connected to the stirring shaft (25).

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