Sludge scraping device for wastewater treatment sedimentation tank
By introducing an independent sludge scraper system into the sedimentation tank, the problem of untimely sludge removal was solved, achieving efficient collection and discharge of sludge and improving wastewater treatment efficiency.
Patent Information
- Application Number
- CN202422794547.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-16
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-16
AI Technical Summary
In existing technologies, when cleaning floating sludge in sedimentation tanks, the sludge cannot be processed in a timely manner, resulting in a large amount of water being carried into subsequent processes, which affects the treatment efficiency.
An independent sludge scraper system was designed, which is controlled by a hydraulic device to operate asynchronously with the rake frame. The sludge scraper runs independently on the surface of the sedimentation tank, and combined with universal joints and pulley tracks, it achieves efficient collection and discharge of sludge.
It improves the collection efficiency of floating sludge, prevents water from being carried into subsequent processes, reduces the difficulty of subsequent processes, and improves the separation rate of wastewater treatment.
Smart Images
Figure CN223696898U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage treatment technical field, especially a wastewater treatment sedimentation tank device. BACKGROUND
[0002] The sedimentation tank is a treatment structure for removing suspended particles with a density greater than water from water by using gravity sedimentation, and is one of the most widely used treatment units in water treatment. The suspended particles with a density greater than water are settled by adding flocculants and coagulants through the sedimentation tank. However, during the settling process, part of the suspended particles cannot be settled due to their light density and are suspended on the surface of the sedimentation tank to form floating sludge. The floating sludge is mainly cleaned by the way of scraping. The scraper is located on the surface of the liquid in the sedimentation tank, and is installed on the rake frame at the bottom of the sedimentation tank. The scraper rotates with the rake frame. The scraper on the surface of the sedimentation tank and the rake frame at the bottom operate synchronously. Since the floating sludge in the sedimentation tank is 80% less than the settled sludge, a large amount of water is brought into the sludge tank by the floating sludge scraper, which affects the subsequent process.
[0003] The Chinese utility model patent with the publication number C221107112U discloses a sedimentation tank mud scraping device. The device includes a support column, a working bridge fixedly installed at the upper end of the support column, an outer ring transmission mechanism provided at one end of the working bridge, a support column fixedly installed at the center position of the bottom of the sedimentation tank, an annular track provided at the upper end of the inner wall of the sedimentation tank, a sludge discharge pipe provided at the bottom of the sedimentation tank, a transmission vertical frame provided between the annular track and the support column, and a mud scraping device provided at the lower end of the transmission vertical frame. The mud scraping device can be independently adjusted within the height range of the T-shaped column and is no longer limited by the height of the wall of the sedimentation tank. Moreover, the thickness of the accumulated sludge can be adjusted to facilitate the cleaning work. However, the aforementioned patent mainly cleans the mud at the bottom of the sedimentation tank, and part of the floating sludge on the surface of the sedimentation tank cannot be timely treated. SUMMARY
[0004] The utility model aims to separate the floating sludge scraper and the rake frame at the bottom, operate asynchronously, and continuously operate the rake frame of the sedimentation tank. When there is too much floating sludge in the sedimentation tank, the mud scraping baffle will operate to collect the mud. When there is less floating sludge, the mud scraping baffle of the sedimentation tank stops operating.
[0005] The utility model discloses a technical scheme that solves its technical problem is: including sedimentation tank, float mud scraper, harrow frame, central shaft, steady flow cylinder, hydraulic oil station, be equipped with working bridge on the sedimentation tank, the bottom of sedimentation tank is conical, and the sedimentation tank center is equipped with the mud outlet, be equipped with water inlet pipeline on the steady flow cylinder, be equipped with first speed reducer on the central shaft, be equipped with first hydraulic device between the hydraulic oil station and first speed reducer, first hydraulic device is connected with the hydraulic oil station through pipeline A, still be equipped with bearing on the central shaft, bearing is connected with second speed reducer, be equipped with second hydraulic device between the hydraulic oil station and second speed reducer, second hydraulic device is connected with the hydraulic oil station through pipeline B, the upper end of float mud scraper is equipped with float mud collection pipe, and the bending portion of float mud collection pipe that extends into the sedimentation tank is installed with universal joint.
[0006] Further, one end of the central shaft is connected to the harrow frame, the harrow frame includes a rotating mechanism welded on the central shaft, four support arms are installed at the lower end of the rotating mechanism, two mud scrapers symmetrically arranged with the central shaft are installed at the lower end of the support arms, the bottom of the harrow frame is in close contact with the bottom of the sedimentation tank, the other end of the central shaft extends to the outside of the working bridge, the first hydraulic device and the first speed reducer are installed on the working bridge.
[0007] Further, a clear liquid overflow tank is arranged on the sedimentation tank, an annular sliding rail is arranged at the upper end of the clear liquid overflow tank, a pulley is arranged at one end of the float mud scraper, and the pulley is embeddedly installed in the sliding rail. The sliding rail provides support force for the float mud scraper, so that the float mud scraper moves in a circular manner in the sedimentation tank.
[0008] Further, the second speed reducer is connected to the float mud scraper through a transmission rod, and the transmission rod is detachably connected to the float mud scraper.
[0009] Further, a second hydraulic device support frame is arranged at the lower end of the working bridge.
[0010] Further, the float mud scraper is made of stainless steel, has a width of 200-150 mm, and the number of the mud scrapers is at least two.
[0011] Further, an adjusting valve is arranged on the pipeline B, the adjusting valve is electrically connected to the second hydraulic device, the adjusting valve can control the start and stop of the second hydraulic device, control the operation of the float mud scraper, and realize independent operation of the float mud scraper.
[0012] Further, the steady flow cylinder is in the shape of a cylinder, the bottom of the steady flow cylinder is communicated with the sedimentation tank, water flows into the steady flow cylinder through the water inlet pipe, so that the water flows from the bottom of the steady flow cylinder to the periphery of the sedimentation tank, the design of the outlet and the depth of the bottom of the steady flow cylinder can effectively reduce the impact of the feed on the central slurry, shorten the settling height, and improve the settling rate.
[0013] The beneficial effects of the present application compared to the prior art are:
[0014] The present application makes the rake frame run continuously at the bottom of the sedimentation tank through the first hydraulic device, and the second hydraulic device runs intermittently through the adjusting valve, so that the floating sludge scraping plate is no longer limited by the operation of the rake frame, the sludge at the bottom of the sedimentation tank is prevented from being accumulated due to the delay in cleaning, the floating sludge scraping plate will not bring a large amount of water into the subsequent process, the separation rate of the wastewater sludge treatment is improved, and the treatment difficulty of the subsequent process of the environmental protection wastewater treatment is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a system schematic diagram of the present application;
[0016] Figure 2 is a local schematic diagram of the present application.
[0017] Figure 1 and Figure 2 In the figure, 1 is a sedimentation tank, 2 is a floating sludge scraping plate, 3 is a rake frame, 4 is a center shaft, 5 is a flow stabilizing cylinder, 6 is a hydraulic oil station, 7 is a working bridge, 8 is a sludge discharge port, 9 is a water inlet pipeline, 10 is a first speed reducer, 11 is a first hydraulic device, 12 is a pipeline A, 13 is a bearing, 14 is a second speed reducer, 15 is a second hydraulic device, 16 is a pipeline B, 17 is a floating sludge collecting pipe, 18 is a universal joint, 19 is a rotating mechanism, 20 is a supporting arm, 21 is a scraping plate, 22 is a clear liquid overflow tank, 23 is a sliding rail, 24 is a pulley, 25 is a transmission rod, 26 is a supporting frame, and 27 is an adjusting valve. DETAILED DESCRIPTION
[0018] Example 1, see Figure 1 and Figure 2As shown, a kind of wastewater treatment sedimentation tank mud scraping device, including sedimentation tank 1, floating mud scraping plate 2, harrow frame 3, center shaft 4, steady flow cylinder 5, hydraulic oil station 6, sedimentation tank 1 is equipped with clear liquid overflow groove 22, the upper end of clear liquid overflow groove 22 is equipped with annular sliding rail 23, floating mud scraping plate 2 one end is equipped with pulley 24, pulley 24 is embedded in sliding rail 23, sedimentation tank 1 is equipped with working bridge 7, the bottom of sedimentation tank 1 is conical, sedimentation tank 1 center is equipped with mud discharge port 8, steady flow cylinder 5 is equipped with water inlet pipeline, steady flow cylinder 5 is cylindrical, the bottom of steady flow cylinder 5 is communicated with sedimentation tank 1, center shaft 4 is communicated with the bottom of sedimentation tank 1, center shaft 4 is equipped with first speed reducer 10, first hydraulic device 11 is arranged between hydraulic oil station 6 and first speed reducer 10, first hydraulic device 11 is connected with hydraulic oil station 6 by pipeline A 12, center shaft 4 is further equipped with bearing 13, bearing 13 is connected with second speed reducer 14, second hydraulic device 15 is arranged between hydraulic oil station 6 and second speed reducer 14, second hydraulic device 15 is connected with hydraulic oil station 6 by pipeline B 16, floating mud collecting pipe 17 is arranged on the upper end of floating mud scraping plate 2, universal joint 18 is installed in the bending part of sedimentation tank where floating mud collecting pipe 17 extends, one end of center shaft 4 is connected with harrow frame 3, harrow frame 3 includes rotating mechanism 19 welded on center shaft 4, four support arms 20 are installed on the lower end of rotating mechanism 19, two mud scraping plates 21 which are symmetrical with center shaft 4 are installed on the lower end of support arm 20, the bottom of harrow frame 3 is in close contact with the bottom of sedimentation tank 1, the other end of center shaft 4 extends to the outside of working bridge 7, first hydraulic device 11 and first speed reducer 10 are installed on working bridge 7, second speed reducer 14 is connected with floating mud scraping plate 2 through transmission rod, transmission rod 25 is detachably connected on floating mud scraping plate 2, support frame 26 of second hydraulic device 15 is arranged on the lower end of working bridge 7, floating mud scraping plate 2 is made of stainless steel, the width is 150mm, the number of mud scraping plate is at least two, adjusting valve 27 is arranged on pipeline B 16.
[0019] Example 2, see Figure 1 and Figure 2As shown, a wastewater treatment sedimentation tank mud scraping device, including a sedimentation tank 1, floating mud scraping plate 2, rake frame 3, center shaft 4, flow stabilizing cylinder 5, hydraulic oil station 6, sedimentation tank 1 is provided with clear liquid overflow tank 22, the upper end of the clear liquid overflow tank 22 is provided with annular sliding rail 23, one end of the floating mud scraping plate 2 is provided with pulley 24, the pulley 24 is embedded in the sliding rail 23, the sedimentation tank 1 is provided with working bridge 7, the bottom of the sedimentation tank 1 is conical, the center of the sedimentation tank 1 is provided with mud discharge port 8, the flow stabilizing cylinder 5 is provided with water inlet pipeline, the flow stabilizing cylinder 5 is cylindrical, the bottom of the flow stabilizing cylinder 5 is communicated with the sedimentation tank 1, the center shaft 4 is communicated with the bottom of the sedimentation tank 1, the center shaft 4 is provided with first speed reducer 10, the first hydraulic device 11 is arranged between the hydraulic oil station 6 and the first speed reducer 10, the first hydraulic device 11 is connected with the hydraulic oil station 6 through pipeline A 12, the center shaft 4 is further provided with bearing 13, the bearing 13 is connected with second speed reducer 14, the second hydraulic device 15 is arranged between the hydraulic oil station 6 and the second speed reducer 14, the second hydraulic device 15 is connected with the hydraulic oil station 6 through pipeline B 16, the upper end of the floating mud scraping plate 2 is provided with floating mud collecting pipe 17, the floating mud collecting pipe 17 extends into the bending part of the sedimentation tank and is provided with universal joint 18, one end of the center shaft 4 is connected with rake frame 3, the rake frame 3 includes rotating mechanism 19 welded on the center shaft 4, four support arms 20 are installed at the lower end of the rotating mechanism 19, two mud scraping plates 21 symmetrical to the center shaft 4 are installed at the lower end of the support arms 20, the bottom of the rake frame 3 is in close contact with the bottom of the sedimentation tank 1, the other end of the center shaft 4 extends to the outside of the working bridge 7, the first hydraulic device 11 and the first speed reducer 10 are installed on the working bridge 7, the second speed reducer 14 and the floating mud scraping plate 2 are connected through transmission rod, the transmission rod 25 is detachably connected on the floating mud scraping plate 2, the working bridge 7 is provided with support frame 26 of the second hydraulic device 15 at the lower end, the floating mud scraping plate 2 is made of stainless steel, the width is 200mm, the number of the mud scraping plates is at least two, the pipeline B 16 is provided with regulating valve 27.
[0020] When the operator uses it, the wastewater flows into the steady flow cylinder 5 through the water inlet pipeline 9, and spreads from the bottom of the steady flow cylinder 5 to the periphery of the sedimentation tank 1. The suspended particles with large density sink to the bottom of the sedimentation tank 1, and the suspended particles with small density rise to the liquid surface of the sedimentation tank 1. The hydraulic oil station 6 supplies oil to the first hydraulic device 11 and the second hydraulic device 15. The first hydraulic device 11 starts, the first speed reducer 10 starts to run, the central shaft 4 starts to rotate, the rake frame 3 continuously scrapes mud at the bottom of the sedimentation tank 1, the mud at the bottom of the sedimentation tank 1 flows into the sludge discharge port 8 under the action of gravity, when the surface sludge covers the entire liquid surface of the sedimentation tank 1, the second hydraulic device 15 is connected with the electric signal of the adjusting valve 27, after the adjusting valve 27 is opened, the second hydraulic device 15 starts, the second speed reducer 14 starts to run, the bearing 13 makes the operation of the second speed reducer 14 not affected by the rotation of the central shaft 4, the pulley 24 of the floating sludge scraping plate 2 runs in the sliding track 23, the floating sludge scraping plate 2 rotates and scrapes mud on the liquid surface of the sedimentation tank 1, and all the floating sludge is scooped to the lower side of the floating sludge collecting pipe 17. The clear liquid flows into the clear liquid overflow tank 22, the angle of the adjusting universal joint 18 is adjusted to make the pipe opening of the floating sludge collecting pipe 17 contact the collected floating sludge, the floating sludge is discharged from the sedimentation tank 1 through the floating sludge collecting pipe 17, the adjusting valve 27 is closed, the second hydraulic device 15 stops running, the floating sludge scraping plate 2 stops rotating, and the angle of the adjusting universal joint 18 is adjusted to make the floating sludge collecting pipe 17 retract.
Claims
1. A sludge scraping device for a wastewater treatment sedimentation tank, characterized in that The mud scraper comprises a sedimentation tank, a floating mud scraping plate, a rake frame, a central shaft, a flow stabilizing cylinder, and a hydraulic oil station, wherein the sedimentation tank is provided with a working bridge, the bottom of the sedimentation tank is conical, the center of the sedimentation tank is provided with a mud discharge port, the flow stabilizing cylinder is provided with a water inlet pipeline, the central shaft is provided with a first speed reducer, the hydraulic oil station and the first speed reducer are provided with a first hydraulic device, the first hydraulic device is connected with the hydraulic oil station through a pipeline A, the central shaft is further provided with a bearing, the bearing is connected with a second speed reducer, the hydraulic oil station and the second speed reducer are provided with a second hydraulic device, the second hydraulic device is connected with the hydraulic oil station through a pipeline B, the upper end of the floating mud scraping plate is provided with a floating mud collecting pipe, and the floating mud collecting pipe is provided with a universal joint at the bending part of the sedimentation tank.
2. A sludge scraping device for a wastewater treatment sedimentation basin as claimed in claim 1, characterized in that One end of the central shaft is connected with the rake frame, the rake frame comprises a rotating mechanism welded on the central shaft, the lower end of the rotating mechanism is provided with four supporting arms, the lower end of the supporting arms is provided with two mud scraping plates which are symmetrical to the central shaft, the bottom of the rake frame is in close contact with the bottom of the sedimentation tank, the other end of the central shaft extends to the outside of the working bridge, the first hydraulic device and the first speed reducer are installed on the working bridge.
3. A sludge scraping device for a wastewater treatment sedimentation basin according to claim 1, characterized in that The sedimentation tank is provided with a clear liquid overflow tank, the upper end of the clear liquid overflow tank is provided with an annular sliding rail, one end of the floating mud scraping plate is provided with a pulley, and the pulley is embeddedly installed in the sliding rail.
4. A sludge scraping device for a wastewater treatment sedimentation basin as defined in claim 1, characterized in that The second speed reducer is connected with the floating mud scraping plate through a transmission rod, and the transmission rod is detachably connected with the floating mud scraping plate.
5. A sludge scraper for a sedimentation basin as defined in claim 1, characterized in that The lower end of the working bridge is provided with a second hydraulic device support frame.
6. A sludge scraping device for a wastewater treatment sedimentation basin as defined in claim 1, characterized in that The floating mud scraping plate is made of stainless steel, the width of the floating mud scraping plate is 200-150 mm, and the number of the floating mud scraping plates is at least two.
7. A sludge scraping device for a wastewater treatment sedimentation basin according to claim 1, characterized in that The pipeline B is provided with an adjusting valve.