Suspension type center transmission concentration mud scraper for sedimentation tank

Abstract

The utility model designs a suspension type center transmission concentration mud scraper for a sedimentation tank, which comprises the sedimentation tank, the upper half part of the sedimentation tank is provided with a water inlet channel, an inclined pipe and a water collecting tank, the water inlet channel is communicated with the water inlet end of the inclined pipe, and the water outlet end of the inclined pipe is communicated with the water collecting tank; a scraping arm, a mud scraping plate and a mud collecting hopper are arranged at the lower half part of the sedimentation tank, the scraping arm is connected with the mud scraping plate, the scraping arm is connected with a rotating device, an automatic lifting adjusting device is arranged on the rotating device, a discharging device is arranged in the mud collecting hopper, and the discharging device is connected with the rotating device; the scraping arm of the sludge scraper automatically ascends and descends according to the thickness of the sludge at the bottom of the tank, free moisture in the sludge in the concentration tank can be further separated, the volume of the sludge is reduced, the concentration of the sludge is improved, and the concentrated sludge is discharged out of the tank.

Description

Technical Field

[0001] This utility model belongs to the field of water purification technology, specifically relating to a suspended center-driven thickening and sludge scraper for sedimentation tanks. Background Technology

[0002] Sedimentation tanks are a highly efficient water purification technology that has been widely used in my country and many industrialized countries. This technology uses a bottom-up influent method, with the influent being flocculated mixed wastewater. The upper part of the sedimentation tank is equipped with inclined pipes for sludge-water separation. The clear water is collected in the upper collection tank and then discharged, while the sludge is concentrated and settled at the bottom of the tank. Under the push of scrapers, the sludge slowly flows along the bottom of the tank to the central sludge collection hopper and is discharged outside the tank through the sludge discharge pipe.

[0003] Existing thickening sludge scrapers are suitable for use in large-diameter circular sedimentation tanks in wastewater treatment. However, circular sedimentation tanks have long reaction times, large volumes, high construction costs, poor effluent quality, and poor sludge removal efficiency, exhibiting the following disadvantages: 1. The sedimentation tank contains many suspended solids that cannot settle to the bottom, thus affecting the effluent quality; 2. Sludge easily clogs the sludge collection hopper and discharge pipe, reducing the amount of sludge discharged and lowering the efficiency; 3. Sludge easily adheres to the scraper blades, resulting in poor scraping performance and shortening the scraper blades' lifespan; 4. When sludge accumulates rapidly at the bottom of the tank and the amount of sludge is large, the scraper blades are easily damaged during the scraping process, increasing the load on the central drive shaft and affecting the overall operation of the equipment.

[0004] Therefore, our company has designed a new type of thickening and sludge scraper, which can ensure high effluent quality and good sedimentation effect from the sedimentation tank, and improve the thickening and sedimentation effect, sludge discharge efficiency, and wastewater treatment efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a suspended center-driven thickening and sludge scraper for sedimentation tanks, which can ensure high effluent quality, good sedimentation effect, and improve the thickening and sedimentation effect, sludge discharge efficiency, and sewage treatment efficiency.

[0006] This utility model designs a suspended center-driven thickening sludge scraper for sedimentation tanks, including a sedimentation tank. The upper part of the sedimentation tank is provided with a water inlet channel, an inclined pipe and a water collection tank. The water inlet channel is connected to the water inlet end of the inclined pipe and the water outlet end of the inclined pipe is connected to the water collection tank.

[0007] The lower half of the sedimentation tank is equipped with a scraper arm, a sludge scraper, and a sludge collection hopper. The scraper arm is connected to the sludge scraper and is connected to a rotating device. The rotating device is equipped with an automatic lifting and adjusting device. A feeding device is installed inside the sludge collection hopper and is connected to the rotating device.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: The rotating device drives the scraper arm to rotate, causing the scraper arm to drive the scraper blade to scrape the sludge from the bottom of the sedimentation tank, discharging the sludge from the bottom of the sedimentation tank into the central sludge collection hopper. The automatic lifting and adjusting device can drive the rotating device to move up and down, thereby moving the scraper blade up and down. This allows the scraper blade to automatically rise and fall according to the thickness of the sludge at the bottom of the tank, scraping sludge at different heights. This avoids damage to the scraper blade at the bottom of the sedimentation tank and poor scraping effect when there is a lot of sludge. Simultaneously, during the automatic rising and falling of the scraper blade, free water in the sludge of the thickening tank is further separated, reducing the sludge volume, increasing the sludge concentration, and accelerating the settling efficiency of suspended solids in the water. This ensures high-quality effluent from the sedimentation tank and good sedimentation effect. The addition of a feeding device inside the sludge collection hopper prevents sludge from easily clogging the sludge collection hopper and discharge pipe, improving the treatment efficiency of the high-efficiency sedimentation tank.

[0009] Furthermore, the sedimentation tank includes partition wall one, partition wall two, top wall, bottom wall, side wall one and side wall two, with an inlet channel provided between partition wall one and partition wall two, partition wall two being connected to the top wall, and partition wall one being connected to the bottom wall;

[0010] The sedimentation tank is equipped with a clear water zone, an inclined tube zone, a water distribution zone, and a sludge accumulation zone. The second side wall is connected to the second partition wall, the first side wall, and the top wall. The clear water zone and the inclined tube zone are located within the area enclosed by the second side wall, the second partition wall, and the first side wall. The inclined tube zone is located below the clear water zone, the water distribution zone is located below the inclined tube zone, and the sludge accumulation zone is located below the water distribution zone. The inclined tubes are located within the inclined tube zone, and the bottom of each inclined tube is equipped with several inclined tube support beams. The inclined tubes can be inclined plates.

[0011] The beneficial effects of adopting the above-mentioned further technical solution are as follows: after the sewage flows over the partition wall, it enters the sedimentation tank through the inlet channel, which can reduce the impact of the inlet water on the sludge at the bottom of the sedimentation tank, ensure the clarity of the effluent, and at the same time prolong the movement trajectory of the water flow in the tank, effectively increasing the hydraulic residence time and improving the sedimentation effect of the sewage; the sewage enters the inclined tube area from the inlet channel for mud-water separation, the clear water is discharged out of the tank through the clear water area, and the sludge is discharged out of the tank through the sludge accumulation area.

[0012] Furthermore, the inlet end of the inclined tube is connected to the inlet channel, the water collection trough is set on the second side wall, the water collection trough is set above the inclined tube, and the outlet end of the inclined tube is connected to the water collection trough.

[0013] Preferably, the inclined tube is set at an angle of 45°-60° within the inclined tube region B.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting up an inclined tube, the water collection tank is placed above the inclined tube, so that the sewage undergoes mud-water separation through the inclined tube. The sediment slides down the tube wall into the mud accumulation area, and the clear water after mud-water separation is discharged from the water collection tank on the second side wall to the outside of the pool.

[0015] Furthermore, the rotating device includes a drive device and a transmission shaft. The drive device is connected to the transmission shaft. The drive device is located at the center of the top of the sedimentation tank. The transmission shaft passes through the top of the sedimentation tank and is connected to the scraper arm.

[0016] Preferably, a support shaft is provided inside the sludge collecting hopper, and a thread is provided inside the support shaft. The transmission shaft is threadedly connected to the support shaft, and the transmission shaft is rotatably disposed inside the support shaft.

[0017] More preferably, the linear velocity of the drive shaft is 1-3 m / min.

[0018] The beneficial effect of adopting the above-mentioned further technical solution is that: the drive device drives the transmission shaft to rotate, which in turn drives the scraper to scrape the bottom of the sedimentation tank and pushes the sludge along the bottom of the tank into the central sludge collection hopper.

[0019] Furthermore, the automatic lifting and adjusting device includes a support frame, a second drive device, a threaded rod, a smooth rod, and a moving part. The support frame is connected to the top of the sedimentation tank, one end of the threaded rod is rotatably connected to the top of the sedimentation tank, and the other end of the threaded rod is rotatably connected to the support frame. One end of the smooth rod is connected to the sedimentation tank, and the other end of the smooth rod is connected to the support frame.

[0020] The movable component is mounted on the threaded rod and the smooth rod. A nut is provided at one end of the movable component that connects to the threaded rod. The nut is threadedly connected to the threaded rod and rotatably connected to the movable component. A ball bearing is provided between the movable component and the nut. The first drive device and the second drive device can be a motor or a motor and a worm gear drive. One end of the threaded rod is connected to the second drive device. The first drive device is mounted on the movable component. The transmission shaft passes through the movable component and is rotatably connected to the movable component.

[0021] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by driving the threaded rod to rotate through the second drive device, the moving part is driven to move on the threaded rod and the smooth rod, thereby driving the first drive device to move up and down. When there is a lot of sludge, the scraper first scrapes off the upper layer of sludge, and then scrapes off the remaining sludge layer by layer. This can avoid damage to the scraper, improve the service life of the scraper, and thus improve the sludge discharge efficiency.

[0022] Furthermore, the scraper is equipped with a flushing pipe, which is connected to the water collection tank.

[0023] The beneficial effect of adopting the above-mentioned further technical solution is that by setting a flushing pipe on the scraper, the settled clean water can be used to flush the scraper, avoiding excessive sludge accumulation on the scraper and improving the scraping effect of the scraper.

[0024] Furthermore, the scraper arm and scraper plate are provided with a plurality of vertically arranged thickening slurry plates, and a tie rod is provided between the scraper arm and the drive shaft, the tie rod being a steel cable; preferably, the thickening slurry plate is provided with a plurality of suspended matter collection elements, the suspended matter collection elements being trough-shaped or funnel-shaped, and the suspended matter collection elements being provided with holes; even more preferably, the suspended matter collection elements are provided on the thickening slurry plate, and the trough or funnel-shaped opening of the suspended matter collection elements faces the sludge collection hopper.

[0025] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting several vertically arranged thickening slurry plates on the scraper arm, the slurry is disturbed, causing the sludge to sink in a spiral; by setting a tie rod, the sludge scraper can avoid shaking during rotation, thus improving the stability of the scraper; the scraper arm of the scraper automatically rises and falls according to the thickness of the sludge at the bottom of the pool, and the automatic lifting adjustment device drives the rotating device to move up and down during rotation. During the rotation, the suspended solids collection component collects the suspended solids, which is beneficial to the sinking of suspended solids in the water during the downward rotation.

[0026] Furthermore, the scraper arm and the scraper blade are connected by a strip plate, and the strip plate and the scraper arm or the scraper blade form a triangular space.

[0027] The beneficial effect of adopting the above-mentioned further technical solution is that by setting the strip plate, the connection strength between the scraper arm and the scraper blade can be improved, thereby improving the stability of the scraper blade in scraping mud.

[0028] Furthermore, the feeding device includes a stirring shaft, which is connected to a rotating device, and a stirring component is provided on the stirring shaft;

[0029] The stirring element is a staggered arrangement of uprights or blades.

[0030] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting a stirring shaft, the rotating device can drive the scraper to scrape sludge, thereby driving the stirring shaft to rotate in the sludge collection hopper, thereby stirring the sludge in the sludge collection hopper and avoiding sludge blockage in the sludge collection hopper. By setting a stirring component on the stirring shaft, and the stirring component being staggered uprights or blades, the sludge discharge rate in the sludge collection hopper can be further improved.

[0031] Furthermore, a power transmission rod is provided on the lower side of the stirring shaft, and a gear is provided on the power transmission rod. A retaining seat is provided at the bottom of the mud collecting hopper, and a power transmission channel is provided inside the retaining seat. A power transmission rod is rotatably arranged inside the power transmission channel. A gear and a conical tooth are provided on the power transmission rod. One end of the power transmission rod with the gear is slidably arranged in the power transmission channel. The gear and the gear mesh. The length of the gear is longer than the length of the gear.

[0032] The bottom of the sludge collection hopper is provided with a sludge discharge pipe, the sludge discharge pipe is provided with a valve, a screw is provided inside the sludge discharge pipe, one end of the screw is provided with a second conical tooth, the screw is rotatably connected to the clamping seat, and the end of the screw with the second conical tooth is provided in the power transmission channel, and the first conical tooth and the second conical tooth mesh.

[0033] Preferably, the screw is provided with helical blades.

[0034] The beneficial effects of adopting the above-mentioned further technical solution are as follows: By setting a power transmission rod one on the lower side of the stirring shaft, when the power transmission rod one moves up or down in the power transmission channel, the gear one and gear two can always be in a meshing state, thereby driving the power transmission rod two to rotate. Through the meshing of the conical teeth one and the conical teeth two, the screw can be stirred in the sludge discharge pipe, which can avoid the sludge clogging the sludge discharge pipe. By setting spiral blades on the screw, the stirring effect in the sludge discharge pipe can be further improved, and the sludge discharge efficiency in the sludge discharge pipe can be further improved. Attached Figure Description

[0035] Figure 1 A suspended, center-driven thickening scraper for use in sedimentation tanks;

[0036] Figure 2 This is an enlarged view of the mud collection hopper structure;

[0037] Figure 3 Schematic diagram of the suspended matter collection device Figure 1 ;

[0038] Figure 4 Schematic diagram of the suspended matter collection device Figure 2 ;

[0039] Figure 5 This is a schematic diagram of the screw structure;

[0040] 1. Sedimentation tank; 11. Partition wall one; 12. Partition wall two; 13. Top wall; 14. Bottom wall; 15. Side wall one; 16. Side wall two; 161. Water collection trough; A. Clear water zone; B. Inclined tube zone; C. Water distribution zone; D. Sludge accumulation zone; 2. Inclined tube; 21. Inclined tube support beam; 22. Fixture; 23. Water inlet channel; 3. Scraper arm; 4. Sludge scraper; 41. Flushing pipe; 42. Thickened slurry plate; 421. Suspended solids collection device; 422. Hole; 43. Tie rod; 44. Strip plate; 5. Sludge hopper; 51. Support shaft; 6. Rotary Device; 61. Drive device one; 62. Transmission shaft; 7. Automatic lifting and adjusting device; 71. Support frame; 72. Drive device two; 73. Threaded rod; 74. Smooth rod; 75. Moving part; 8. Discharge device; 81. Mixing shaft; 82. Mixing part; 83. Power transmission rod one; 831. Gear one; 84. Power transmission rod two; 841. Gear two; 842. Conical gear one; 85. Screw; 851. Conical gear two; 852. Spiral blade; 86. Sludge discharge pipe; 87. Holding seat; 871. Power transmission channel. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model.

[0042] Example 1:

[0043] This utility model designs a suspended center-driven thickening sludge scraper for sedimentation tanks, including a sedimentation tank 1. The upper part of the sedimentation tank 1 is provided with an inlet channel 23, an inclined pipe 2, and a water collection tank 161. The inlet channel 23 is connected to the inlet end of the inclined pipe 2, and the outlet end of the inclined pipe 2 is connected to the water collection tank 161. The lower part of the sedimentation tank 1 is provided with a scraper arm 3, a sludge scraper 4, and a sludge collection hopper 5. The scraper arm 3 is connected to the sludge scraper 4, and the scraper arm 3 is connected to a rotating device 6. The rotating device 6 is provided with an automatic lifting and adjusting device 7. The sludge collection hopper 5 is provided with a feeding device 8, and the feeding device 8 is connected to the rotating device 6. The rotating device 6 drives the scraper arm 3 to rotate, which in turn drives the scraper plate 4 to scrape the sludge from the bottom of the sedimentation tank 1, discharging the sludge from the bottom of the sedimentation tank 1 into the sludge collection hopper 5. The automatic lifting and adjusting device 7 can drive the rotating device 6 to move up and down, thereby driving the scraper plate 4 to move up and down. This allows the scraper plate 4 to automatically rise and fall according to the thickness of the sludge at the bottom of the tank, scraping sludge at different heights. This avoids damage to the scraper plate 4 at the bottom of the sedimentation tank 1 and poor scraping effect when there is a lot of sludge. At the same time, during the automatic rising and falling of the scraper plate 4, the free water in the sludge of the thickening tank is further separated, reducing the volume of sludge, increasing the sludge concentration, and accelerating the settling efficiency of suspended solids in the sedimentation tank 1. This ensures high effluent quality from the sedimentation tank 1 and good sedimentation effect. The feeding device 8 installed in the sludge collection hopper 5 can prevent sludge from clogging in the sludge collection hopper 5 and the sludge discharge pipe 86, thus improving the treatment efficiency of the sedimentation tank 1.

[0044] The sedimentation tank 1 includes a first partition wall 11, a second partition wall 12, a top wall 13, a bottom wall 14, a first side wall 15, and a second side wall 16. A water inlet channel 23 is provided between the first partition wall 11 and the second partition wall 12. The second partition wall 12 is connected to the top wall 13, and the first partition wall 11 is connected to the bottom wall 14.

[0045] The sedimentation tank 1 is provided with a clear water zone A, an inclined tube zone B, a water distribution zone C, and a sludge accumulation zone D. The second side wall 16 is connected to the second partition wall 12, the first side wall 15, and the top wall 13. The clear water zone A and the inclined tube zone B are located within the area enclosed by the second side wall 16, the second partition wall 12, and the first side wall 15. The inclined tube zone B is located below the clear water zone A. The water distribution zone C is located below the inclined tube zone B. The sludge accumulation zone D is located below the water distribution zone C. The inclined tube 2 is located inside the inclined tube zone B. The bottom of the inclined tube 2 is provided with several inclined tube support beams 21. The inclined tube 2 can be an inclined plate.

[0046] After the sewage overflows the side wall 11, it enters the sedimentation tank 1 through the inlet channel 23. This reduces the impact of the inlet water on the sludge at the bottom of the sedimentation tank 1, ensuring the clarity of the effluent. At the same time, it prolongs the movement trajectory of the water in the tank, effectively increasing the hydraulic retention time and improving the sedimentation effect of the sewage. The sewage enters the inclined tube area B through the inlet channel 23 for mud-water separation. The clear water is discharged outside the tank through the clear water area A, and the sludge is discharged outside the tank through the sludge accumulation area D.

[0047] The inlet end of the inclined tube 2 is connected to the inlet channel 23. The water collection tank 161 is set on the side wall 16. The water collection tank 161 is set above the inclined tube 2. The outlet end of the inclined tube 2 is connected to the water collection tank 161.

[0048] Preferably, the inclined tube 2 is inclined at 45°-60° within the inclined tube region B.

[0049] By setting the inclined tube 2, the water collection tank 161 is set above the inclined tube 2, so that the sewage can be separated into mud and water through the inclined tube 2. The sediment slides down the pipe wall and enters the mud accumulation area D. The clear water after mud-water separation is discharged from the water collection tank 161 on the side wall 16 to the outside of the pool.

[0050] The rotating device 6 includes a drive device 61 and a transmission shaft 62. The drive device 61 is connected to the transmission shaft 62. The drive device 61 is located at the center of the top of the sedimentation tank 1. The transmission shaft 62 passes through the top of the sedimentation tank 1 and is connected to the scraper arm 3. A fixing member 22 is provided at the bottom of the inclined tube support beam 21. The fixing member 22 is rotatably connected to the transmission shaft 62. A support shaft 51 is provided inside the sludge collecting hopper 5. The support shaft 51 is threaded. The transmission shaft 62 is threadedly connected to the support shaft 51. The transmission shaft 62 is rotatably disposed inside the support shaft 51. The linear velocity of the transmission shaft 62 is 1-3 m / min. The drive device 61 drives the transmission shaft 62 to rotate, which in turn drives the scraper 4 to push the sludge scraper 4 along the bottom of the sedimentation tank 1 into the central sludge hopper 5. The fixed part 22 is provided at the bottom of the inclined tube support beam 21, which can provide a certain support force for the central transmission shaft 62 and improve the stability of the rotating device 6. The support shaft 51 can further support the transmission shaft 62 and further improve the stability of the transmission shaft 62.

[0051] The automatic lifting and adjusting device 7 includes a support frame 71, a drive device 72, a threaded rod 73, a smooth rod 74, and a movable component 75. The support frame 71 is connected to the top of the sedimentation tank 1. One end of the threaded rod 73 is rotatably connected to the top of the sedimentation tank 1, and the other end of the threaded rod 73 is rotatably connected to the support frame 71. One end of the smooth rod 74 is connected to the sedimentation tank 1, and the other end of the smooth rod 74 is connected to the support frame 71. The movable component 75 is mounted on the threaded rod 73 and the smooth rod 74, and the movable component 75 is connected to the threaded rod 73... A nut is provided at one end of the connection, and the nut is threadedly connected to the threaded rod 73. The nut is rotatably connected to the moving part 75. A ball bearing is provided between the moving part 75 and the nut. The first drive device 61 and the second drive device 72 can be motors or motors and worm gears. One end of the threaded rod 73 is connected to the second drive device 72. The moving part 75 is provided on the threaded rod 73 and the smooth rod 74. The first drive device 61 is provided on the moving part 75. The transmission shaft 62 passes through the moving part 75 and is rotatably connected to the moving part 75. The second drive device 72 drives the threaded rod 73 to rotate, thereby driving the moving part 75 to move on the threaded rod 73 and the smooth rod 74, thereby driving the first drive device 61 to move up and down. This allows the scraper 4 to scrape off the upper layer of sludge first when there is a lot of sludge, and then scrape off the remaining sludge layer by layer. This can avoid damage to the scraper 4, extend the service life of the scraper 4, and thus improve the sludge discharge efficiency.

[0052] The scraper blade 4 is equipped with a flushing pipe 41, which is connected to the water collection tank 161. By providing a flushing pipe 41 on the scraper blade 4, the settled clean water can be used to flush the scraper blade 4, preventing excessive sludge accumulation and improving the scraping effect of the scraper blade 4.

[0053] The scraper arm 3 and the sludge scraper 4 are provided with a plurality of vertically arranged thickening slurry plates 42. A tie rod 43 is provided between the scraper arm 3 and the drive shaft 62. The tie rod 43 can be a steel cable. Preferably, a plurality of suspended matter collection elements 421 are provided on the thickening slurry plate 42. The suspended matter collection elements 421 can be trough-shaped or funnel-shaped. The suspended matter collection elements 421 are provided with holes 422. More preferably, the suspended matter collection elements 421 are provided on the thickening slurry plate 42, and the trough or funnel-shaped opening of the suspended matter collection elements 421 faces the sludge collection hopper 5. By setting several vertically arranged thickening slurry plates 42 on the scraper arm 3, the slurry is disturbed, causing the sludge to sink in a spiral. By setting the tie rod 43, the sludge scraper 4 can be prevented from shaking during rotation, thus improving the stability of the sludge scraping. The scraper arm 3 of the scraper automatically rises and falls according to the thickness of the sludge at the bottom of the pool. During the up-and-down movement and rotation of the automatic lifting adjustment device 7, the suspended solids collection component 421 collects the suspended solids. During the downward movement and rotation, it is beneficial for the suspended solids in the water to sink.

[0054] The scraper arm 3 and the scraper blade 4 are connected by a strip plate 44, which forms a triangular space with the scraper arm 3 or the scraper blade 4. By setting the strip plate 44, the connection strength between the scraper arm 3 and the scraper blade 4 can be improved, thereby improving the stability of the scraper blade 4 in scraping mud.

[0055] The feeding device 8 includes a stirring shaft 81, which is connected to the rotating device 6. A stirring element 82 is mounted on the stirring shaft 81; the stirring element 82 consists of staggered uprights or blades. By mounting the stirring shaft 81, the rotating device 6 drives the scraper 4 to scrape sludge, thereby causing the stirring shaft 81 to rotate within the sludge collection hopper 5. This stirs the sludge in the sludge collection hopper 5, preventing sludge blockage. Furthermore, by mounting the stirring element 82 on the stirring shaft 81, which consists of staggered uprights or blades, the sludge discharge rate within the sludge collection hopper 5 can be further improved.

[0056] A power transmission rod 83 is provided on the lower side of the stirring shaft 81. A gear 831 is provided on the power transmission rod 83. A retaining seat 87 is provided at the bottom of the mud collecting hopper 5. A power transmission channel 871 is provided inside the retaining seat 87. A power transmission rod 84 is rotatably arranged inside the power transmission channel 871. A gear 841 and a conical tooth 842 are provided on the power transmission rod 84. One end of the power transmission rod 83 with the gear 831 is slidably disposed in the power transmission channel 871. The gear 831 and the conical tooth 842... Gear 841 meshes with gear 831, and the length of gear 831 is longer than that of gear 841. A mud discharge pipe 86 is provided at the bottom of the mud collection hopper 5. A valve is provided on the mud discharge pipe 86. A screw 85 is provided inside the mud discharge pipe 86. A conical tooth 851 is provided at one end of the screw 85. The screw 85 is rotatably connected to the retaining seat 87. The end of the screw 85 with the conical tooth 851 is provided in the power transmission channel 871. The conical tooth 842 and the conical tooth 851 mesh. A spiral blade 852 is provided on the screw 85. By providing a power transmission rod 83 on the lower side of the stirring shaft 81, when the power transmission rod 83 moves up or down in the power transmission channel 871, the gear 831 and the gear 841 can always be in a meshing state, thereby driving the power transmission rod 84 to rotate. Through the meshing of the conical teeth 842 and the conical teeth 851, the screw 85 can be agitated in the sludge discharge pipe 86, which can prevent sludge from clogging the sludge discharge pipe 86. By providing a spiral blade 852 on the screw 85, the agitation effect in the sludge discharge pipe 86 can be further improved, and the sludge discharge efficiency in the sludge discharge pipe 86 can be further improved.

[0057] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A suspended center-driven thickening scraper for a sedimentation tank, comprising a sedimentation tank (1), characterized in that: The upper part of the sedimentation tank (1) is provided with an inlet channel (23), an inclined tube (2) and a water collection tank (161). The inlet channel (23) is connected to the inlet end of the inclined tube (2), and the outlet end of the inclined tube (2) is connected to the water collection tank (161). The lower half of the sedimentation tank (1) is provided with a scraper arm (3), a sludge scraper (4) and a sludge collection hopper (5). The scraper arm (3) is connected to the sludge scraper (4). The scraper arm (3) is connected to a rotating device (6). An automatic lifting adjustment device (7) is provided on the rotating device (6). A feeding device (8) is provided in the sludge collection hopper (5). The feeding device (8) is connected to the rotating device (6).

2. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 1, characterized in that: The sedimentation tank (1) includes a first partition wall (11), a second partition wall (12), a top wall (13), a bottom wall (14), a first side wall (15) and a second side wall (16). A water inlet channel (23) is provided between the first partition wall (11) and the second partition wall (12). The second partition wall (12) is connected to the top wall (13), and the first partition wall (11) is connected to the bottom wall (14). The sedimentation tank (1) is provided with a clear water zone (A), an inclined tube zone (B), a water distribution zone (C) and a sludge accumulation zone (D). The second side wall (16) is connected to the second partition wall (12), the first side wall (15) and the top wall (13). The clear water zone (A) and the inclined tube zone (B) are located in the area enclosed by the second side wall (16), the second partition wall (12) and the first side wall (15). The inclined tube zone (B) is located below the clear water zone (A). The water distribution zone (C) is located below the inclined tube zone (B). The sludge accumulation zone (D) is located below the water distribution zone (C). The inclined tube (2) is located in the inclined tube zone (B). Several inclined tube support beams (21) are provided at the bottom of the inclined tube (2).

3. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 2, characterized in that: The inlet end of the inclined tube (2) is connected to the inlet channel (23), the water collection tank (161) is set on the side wall (16), the water collection tank (161) is set above the inclined tube (2), and the outlet end of the inclined tube (2) is connected to the water collection tank (161). Preferably, the inclined tube (2) is inclined at 45°-60° within the inclined tube area (B).

4. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 1, characterized in that: The rotating device (6) includes a drive device (61) and a transmission shaft (62). The drive device (61) is connected to the transmission shaft (62). The drive device (61) is located at the center of the top of the sedimentation tank (1). The transmission shaft (62) passes through the top of the sedimentation tank (1) and is connected to the scraper arm (3). Preferably, a support shaft (51) is provided inside the mud collection hopper (5), and a thread is provided inside the support shaft (51). The transmission shaft (62) is threadedly connected to the support shaft (51), and the transmission shaft (62) is rotatably disposed inside the support shaft (51). More preferably, the linear velocity of the drive shaft (62) is 1-3 m / min.

5. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 4, characterized in that: The automatic lifting and adjusting device (7) includes a support frame (71), a second driving device (72), a threaded rod (73), a smooth rod (74), and a moving part (75). The support frame (71) is connected to the top of the sedimentation tank (1). One end of the threaded rod (73) is rotatably connected to the top of the sedimentation tank (1), and the other end of the threaded rod (73) is rotatably connected to the support frame (71). One end of the smooth rod (74) is connected to the top of the sedimentation tank (1), and the other end of the smooth rod (74) is connected to the support frame (71). The movable part (75) is mounted on the threaded rod (73) and the smooth rod (74). A nut is provided at one end of the movable part (75) that is connected to the threaded rod (73). The nut is threadedly connected to the threaded rod (73) and rotatably connected to the movable part (75). One end of the threaded rod (73) is connected to the second drive device (72). The first drive device (61) is mounted on the movable part (75). The transmission shaft (62) passes through the movable part (75) and is rotatably connected to the movable part (75).

6. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 1, characterized in that: The scraper (4) is provided with a flushing pipe (41), which is connected to the water collection tank (161).

7. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 1, characterized in that: The scraper arm (3) and the sludge scraper (4) are provided with a plurality of concentrated slurry plates (42), and a tie rod (43) is provided between the scraper arm (3) and the drive shaft (62); Preferably, a plurality of suspended matter collection devices (421) are provided on the concentrated slurry plate (42), and the suspended matter collection devices (421) can be trough-shaped or funnel-shaped, and the suspended matter collection devices (421) are provided with holes (422); Preferably, the suspended solids collector (421) is disposed on the concentrated slurry plate (42); the slot or flared opening of the suspended solids collector (421) faces the sludge hopper (5).

8. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 1, characterized in that: The scraper arm (3) and the mud scraper (4) are connected by a strip plate (44), and the strip plate (44) forms a triangular space with the scraper arm (3) or the mud scraper (4).

9. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 1, characterized in that: The feeding device (8) includes a stirring shaft (81), which is connected to the rotating device (6), and a stirring component (82) is provided on the stirring shaft (81); The stirring element (82) is a staggered arrangement of uprights or blades.

10. The suspended center-driven thickening sludge scraper for sedimentation tanks according to claim 9, characterized in that: A power transmission rod (83) is provided on the lower side of the stirring shaft (81). A gear (831) is provided on the power transmission rod (83). A retaining seat (87) is provided at the bottom of the mud collection hopper (5). A power transmission channel (871) is provided inside the retaining seat (87). A power transmission rod (84) is rotatably provided inside the power transmission channel (871). A gear (841) and a conical tooth (842) are provided on the power transmission rod (84). One end of the power transmission rod (83) with the gear (831) is slidably provided in the power transmission channel (871). The gear (831) meshes with the gear (841). The length of the gear (831) is longer than the length of the gear (841). The bottom of the mud collection hopper (5) is provided with a mud discharge pipe (86), a valve is provided on the mud discharge pipe (86), a screw (85) is provided inside the mud discharge pipe (86), one end of the screw (85) is provided with a second conical tooth (851), the screw (85) is rotatably connected to the clamping seat (87), the end of the screw (85) provided with the second conical tooth (851) is provided in the power transmission channel (871), and the first conical tooth (842) and the second conical tooth (851) mesh; Preferably, the screw (85) is provided with helical blades (852).

Images