Online cleaning device based on water inlet and distribution pipe of secondary sedimentation tank

Abstract

The invention relates to the field of secondary sedimentation tank cleaning, in particular to an online cleaning device based on a secondary sedimentation tank water inlet and distribution pipe, which comprises a tank body and a water distribution pipe, a cleaning unit is arranged above the pool body and comprises a bracket, a cleaning block, a threaded rod, a driving ring and a driving unit; the bracket is fixedly arranged at the upper part of the tank body; the multiple cleaning blocks can move in the vertical direction and penetrate through the water distribution pipe, each cleaning block is of a circular structure, and the diameter of each cleaning block is the same as the inner diameter of the water distribution pipe; the threaded rod is vertically and fixedly arranged on the upper portion of the cleaning block, vertically penetrates through the support and is in sliding fit with the support. The driving ring is rotationally arranged on the upper portion of the support and sleeves the periphery of the threaded rod, and an inner ring of the driving ring is in threaded fit with the threaded rod; the driving unit is used for driving the driving ring to rotate. According to the invention, the water distribution pipe can be automatically cleaned without influencing the normal work of the secondary sedimentation tank, and meanwhile, the cleaning efficiency is also improved.

Description

Technical Field

[0001] The present invention relates to the field of secondary sedimentation tank cleaning, and specifically to an online cleaning device based on the water distribution pipe of the secondary sedimentation tank. Background Art

[0002] In traditional radial-flow secondary sedimentation tanks, water typically flows through distribution holes in the water channel, changes direction after passing through the water retaining plate and water retaining skirt, and enters the bottom of the secondary sedimentation tank. This water distribution method is prone to short-circuiting. Furthermore, wastewater falls onto the surface of the accumulated sludge and then settles again, affecting the sludge settling effect. This results in limited room for increasing the surface loading rate of the secondary sedimentation tank.

[0003] Chinese patent publication number CN219922152U discloses a high-density circumferential inlet and outlet secondary sedimentation tank, comprising a tank body, a water distribution channel provided in the tank body, a water distribution hole provided on the water distribution channel, and a water distribution pipe, the top water inlet of the water distribution pipe being tightly fitted and inserted into the water distribution hole, the bottom water outlet of the water distribution pipe being below the mud level in the tank body, and the distance between the bottom water outlet and the bottom of the tank body meeting the operating height of the sludge scraper.

[0004] Although the above scheme improves the sedimentation effect of sludge, after a period of use, the inner wall of the water distribution pipe will gradually be attached with sludge and impurities. The impurities include coarse suspended matter that cannot be intercepted by the grille and leaves dropped from the open-air aeration tank, etc., resulting in the water flow in the water distribution pipe gradually decreasing due to the blockage of sludge and impurities, which in turn leads to a reduction in the amount of sewage entering the secondary sedimentation tank through the water distribution pipe, thereby reducing the treatment efficiency of the secondary sedimentation tank. The existing technology does not have a self-cleaning structure for the water distribution pipe, and the water distribution pipe needs to be dredged manually, resulting in a large workload during the dredging operation, and the secondary sedimentation tank needs to be in a stopped state during dredging, which reduces the treatment speed of sludge and impurities. Summary of the Invention

[0005] The cleaning block is lowered by the threaded rod so that the cleaning block has a certain thrust when cleaning the sludge and impurities in the water distribution pipe, thereby avoiding the situation that the cleaning block is blocked by the sludge and impurities when descending. At the same time, when the secondary sedimentation tank is cleaned regularly, the cleaning unit cleans the water distribution pipe one by one, ensuring that the normal cleaning of the water distribution pipe can be completed when the secondary sedimentation tank is in normal operation, reducing workload and ensuring the working efficiency of the secondary sedimentation tank. At the same time, the cleaned sludge and impurities directly fall to the bottom of the secondary sedimentation tank for sedimentation, and there is no need to transport and process the cleaned sludge and impurities again, thereby improving cleaning efficiency.

[0006] In order to solve the problems of the prior art, the present invention provides an online cleaning device based on the water distribution pipe of the secondary sedimentation tank, comprising a tank body and a plurality of water distribution pipes uniformly arranged on the tank body around the axis of the tank body; A cleaning unit is provided above the pool body, and the cleaning unit comprises a bracket, a cleaning block, a threaded rod, a driving ring and a driving unit; The bracket is fixedly arranged on the upper part of the pool body; There are multiple cleaning blocks, each corresponding to a water distribution pipe. The cleaning blocks can move vertically and penetrate the water distribution pipe. The cleaning blocks are circular in structure and have the same diameter as the inner diameter of the water distribution pipe. The threaded rod is vertically fixed on the upper part of the cleaning block, and the threaded rod vertically passes through the bracket and is slidably matched with the bracket; The driving ring is rotatably arranged on the upper part of the bracket, the driving ring is sleeved on the outer periphery of the threaded rod, and the inner ring of the driving ring is threadably matched with the threaded rod; The driving unit is arranged on the bracket and is used for driving the driving ring to rotate.

[0007] Preferably, the cleaning unit further comprises a snap ring, a connecting unit and an electromagnet; The clamping ring is rotatably arranged just above the driving ring, and a clamping groove is provided at the lower part of the clamping ring, which has a hexagonal structure; The connecting unit is fixedly arranged on the upper part of the driving ring; The electromagnet is arranged on the upper part of the clamping ring. When the electromagnet is energized, the connecting unit extends in the vertical direction and extends into the clamping groove, and the clamping ring drives the driving ring to rotate through the connecting unit.

[0008] Preferably, the connecting unit includes a clamping block, a lifting rod and a lifting sleeve; The clamping block is vertically movable and arranged above the driving ring. The clamping block can be magnetically attracted by the electromagnet after power is applied. The horizontal cross-section of the outer periphery of the clamping block is a hexagonal structure and can be clamped and matched with the clamping groove. The lifting rod is vertically fixedly arranged at the lower part of the clamping block; The lifting sleeve is vertically fixedly arranged on the upper part of the driving ring, and the lifting rod extends into the lifting sleeve and is slidably matched with the lifting sleeve.

[0009] Preferably, a rolling ball is rotatably provided on the upper portion of the clamping block, and the rolling ball is in rolling engagement with the bottom portion of the clamping ring.

[0010] Preferably, a damper communicating with the lifting sleeve is provided on the side wall of the lifting sleeve.

[0011] Preferably, the drive unit comprises a first gear ring, a rotary driver, a first gear and a second gear ring; The first gear ring is rotatably arranged on the upper part of the bracket along the axis of the tank body; The rotary driver is vertically arranged on one side of the first gear ring; The first gear is fixedly arranged on the output end of the rotary driver, and the first gear is meshed with the first gear ring; The second gear ring is fixedly sleeved on the outside of the clamping ring, and the second gear ring is meshed with the first gear ring.

[0012] Preferably, a cleaning brush for cleaning the upper part of the cleaning block is rotatably provided at the lower part of the bracket, and the cleaning brush is an annular structure.

[0013] Preferably, a transmission assembly is provided between the cleaning brush and the driving unit, and the driving unit drives the cleaning brush to rotate via the transmission assembly.

[0014] Preferably, a water sprayer is provided on the periphery of the cleaning brush, and the water sprayer is an annular structure.

[0015] Preferably, the cleaning block is a hollow structure.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The present invention sets a cleaning unit on the upper part of the tank body so that the cleaning block is always located directly above the water distribution pipe when the secondary sedimentation tank is in normal operation. When the water distribution pipe needs to be cleaned, the cleaning block gradually descends under the drive of the threaded rod. The threaded rod drives the cleaning block to descend, so that the cleaning block has a certain thrust when cleaning the sludge and impurities in the water distribution pipe, avoiding the situation where the cleaning block is blocked by sludge and impurities and cannot descend when descending. At the same time, when the secondary sedimentation tank is regularly cleaned, the cleaning unit cleans the water distribution pipes one by one, ensuring that the secondary sedimentation tank can complete the normal cleaning of the water distribution pipe when it is in normal operation, reducing the workload and ensuring the working efficiency of the secondary sedimentation tank. At the same time, the cleaned sludge and impurities fall directly to the bottom of the secondary sedimentation tank for sedimentation, without the need to transport and process the cleaned sludge and impurities again, thereby improving the cleaning efficiency. In summary, the present invention can achieve autonomous cleaning of the water distribution pipe without affecting the normal operation of the secondary sedimentation tank, and at the same time improves the cleaning efficiency.

[0017] 2. By setting up an electromagnet and a connecting unit, the effect of cleaning all water distribution pipes one by one is achieved when only one rotating drive is set. At the same time, since the clamping block rises only after the electromagnet is energized, and the clamping ring is always in a rotating state under the drive of the driving unit, the clamping block cannot slide directly into the clamping groove. In most cases, the clamping block is not aligned with the clamping groove, and the upper part of the clamping block and the lower part of the clamping ring slide relative to each other. When the rolling ball is not set, the friction coefficient between the clamping block and the clamping ring is large, resulting in high wear of the clamping block and the clamping ring. After the rolling ball is set, the clamping block contacts the clamping ring through the rolling ball, which reduces the friction coefficient between the clamping block and the clamping ring and extends the service life of the clamping block and the clamping ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of an online cleaning device based on the water distribution pipe of the secondary sedimentation tank applied by the present invention.

[0019] Figure 2 This invention is an online cleaning device based on the water distribution pipe of the secondary sedimentation tank. Figure 1 A local enlarged schematic diagram of point A in the middle.

[0020] Figure 3 It is a side view of an online cleaning device based on the water distribution pipe of the secondary sedimentation tank applied for by the present invention.

[0021] Figure 4 This invention is an online cleaning device based on the water distribution pipe of the secondary sedimentation tank. Figure 3 Schematic cross-sectional view at the middle BB.

[0022] Figure 5It is a cutaway stereoscopic schematic diagram of an online cleaning device based on the water distribution pipe of the secondary sedimentation tank applied for by the present invention.

[0023] Figure 6 This invention is an online cleaning device based on the water distribution pipe of the secondary sedimentation tank. Figure 5 A partial enlarged schematic diagram of point C in the middle.

[0024] Figure 7 It is a three-dimensional schematic diagram of an online cleaning device based on the water distribution pipe of the secondary sedimentation tank after removing part of the tank body.

[0025] Figure 8 It is a three-dimensional schematic diagram of the present invention's application of an online cleaning device based on the water distribution pipe of the secondary sedimentation tank when the cleaning unit cleans the water distribution pipe.

[0026] Figure 9 It is a cutaway stereoscopic schematic diagram of a cleaning unit in an online cleaning device based on a secondary sedimentation tank inlet water distribution pipe according to the present invention.

[0027] Figure 10 It is a three-dimensional schematic diagram of a cleaning unit of an online cleaning device based on a secondary sedimentation tank inlet water distribution pipe after removing a cleaning block and a threaded rod.

[0028] The numbers in the figure are: 1. Pool body; 11. Water distribution pipe; 12. Water inlet channel; 2. Cleaning unit; 21. Bracket; 22. Cleaning block; 23. Threaded rod; 24. Drive ring; 25. Drive unit; 251. First gear ring; 252. Rotary drive; 253. First gear; 254. Second gear ring; 26. Snap ring; 261. Snap groove; 27. Connecting unit; 271. Snap block; 272. Lifting rod; 273. Lifting sleeve; 274. Ball; 275. Damper; 28. Electromagnet; 3. Cleaning brush; 31. Transmission assembly; 311. Third gear ring; 312. Second gear; 313. Third gear; 314. Fourth gear ring; 4. Sprinkler. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] Reference Figure 1-Figure 7 : An online cleaning device based on a water distribution pipe of a secondary sedimentation tank, comprising a tank body 1 and a plurality of water distribution pipes 11 uniformly arranged on the tank body 1 around the axis of the tank body 1; A cleaning unit 2 is provided above the tank body 1, and the cleaning unit 2 includes a bracket 21, a cleaning block 22, a threaded rod 23, a driving ring 24 and a driving unit 25; The bracket 21 is fixedly arranged on the upper part of the tank body 1; A plurality of cleaning blocks 22 are provided, and each cleaning block 22 corresponds to the water distribution pipe 11 one by one. The cleaning block 22 can move in the vertical direction and penetrate the water distribution pipe 11. The cleaning block 22 is a circular structure and the diameter of the cleaning block 22 is the same as the inner diameter of the water distribution pipe 11. The threaded rod 23 is vertically fixedly arranged on the upper part of the cleaning block 22, and the threaded rod 23 vertically passes through the bracket 21 and is slidably engaged with the bracket 21; The driving ring 24 is rotatably arranged on the upper part of the bracket 21, and the driving ring 24 is sleeved on the outer periphery of the threaded rod 23, and the inner ring of the driving ring 24 is threadedly engaged with the threaded rod 23; The driving unit 25 is provided on the bracket 21 and is used to drive the driving ring 24 to rotate.

[0031] The water distribution pipes 11 are usually provided in multiple numbers and are evenly distributed in the secondary sedimentation tank around the axis of the secondary sedimentation tank. This uniform water distribution method can prevent the water flow from directly impacting the sedimentation area in the secondary sedimentation tank, reduce the disturbance of the settled sludge, and thus facilitate the sedimentation and concentration of the sludge. An inlet channel 12 is provided on the upper part of the water distribution pipe 11. All water distribution pipes 11 are connected to the inlet channel 12. Sewage enters the tank body 1 through the water distribution pipe 11. However, during use, sludge and impurities are easily attached to the inner wall of the water distribution pipe 11. Before the sewage enters the inlet channel 12, it needs to be filtered through a grid to block some leaves, etc. However, some relatively large suspended matter or leaves dropped from the open-air aeration tank still enter the water distribution pipe 11 through the water inlet. Impurities mainly refer to relatively large suspended matter or leaves dropped from the open-air aeration tank, etc. As the water distribution pipe 11 is used for a long time, it will be clogged with sludge and impurities, which will prevent the water distribution pipe 11 from being able to flow in normally. Therefore, the inner wall of the water distribution pipe 11 needs to be cleaned regularly. However, when the staff cleans the water distribution pipe 11, the secondary sedimentation tank cannot be in operation, otherwise it will be very dangerous. At the same time, due to the large number of water distribution pipes 11, the staff has a lot of work to do to clean each water distribution pipe 11 one by one, and the cleaning efficiency is low. However, there is no equipment in the prior art that can automatically clean the water distribution pipe 11.

[0032] Based on the above problems, the existing secondary sedimentation tank structure is optimized and designed, and a cleaning unit 2 is set on the upper part of the water distribution pipe 11. When the water distribution pipe 11 needs to be cleaned, the cleaning unit 2 is started, and the cleaning unit 2 cleans the water distribution pipes 11 one by one, that is, when the water distribution pipe 11 is cleaned, the secondary sedimentation tank is still in operation, and the uncleaned water distribution pipes 11 are still in a normal water inlet state. Since there are usually a large number of water distribution pipes 11, when one of the water distribution pipes 11 is blocked due to cleaning needs, the overall water inlet is less affected. The cleaning work of the water distribution pipe 11 is completed, and the secondary sedimentation tank does not need to stop working during cleaning, which improves the working efficiency of the secondary sedimentation tank and reduces the workload of the staff during cleaning. The specific structure and working process of the present invention application are as follows: When the secondary sedimentation tank is in normal operation, the cleaning block 22 is located just above the water distribution pipe 11, and the sewage in the water inlet channel 12 can flow normally into the secondary sedimentation tank through the water distribution pipe 11. As the use time goes by, the water distribution pipe 11 is gradually blocked by sludge and impurities. At this time, the cleaning block 22 located on the upper part of the water distribution pipe 11 gradually descends under the drive of the threaded rod 23. It is worth noting that the threaded rod 23 can only move in the vertical direction, and the bracket 21 limits the rotation of the threaded rod 23. When the cleaning block 22 needs to be lowered, the drive ring 24 starts to rotate, and the drive ring 24 and the threaded rod 2 3 threads cooperate so that the threaded rod 23 drives the cleaning block 22 to move from top to bottom, and the cleaning block 22 gradually descends and slides into the water distribution pipe 11. Since the cleaning block 22 is a circular structure and the diameter of the cleaning block 22 is the same as the inner diameter of the water distribution pipe 11, the cleaning block 22 can scrape off the sludge and impurities attached to the inner wall of the water distribution pipe 11 after sliding into the water distribution pipe 11. If the water distribution pipe 11 is blocked, the cleaning block 22 can also push out the blockage in the water distribution pipe 11 during the descending process, so that the blockage enters the bottom of the secondary sedimentation tank and settles. Since there are multiple water distribution pipes 11, when the cleaning unit 2 cleans the water distribution pipes 11, only one water distribution pipe 11 is in the cleaning state at a time. This is because when the cleaning block 22 cleans the water distribution pipe 11, the water distribution pipe 11 will be blocked. When the cleaning block 22 completely passes through the water distribution pipe 11 from top to bottom, it needs to rise and reset. When the cleaning block 22 rises and resets, it will still pass through the water distribution pipe 11, which will also cause the water distribution pipe 11 to be blocked. If all the water distribution pipes 11 are cleaned at the same time, all the water distribution pipes 11 will be blocked, and then no sewage will be injected into the secondary sedimentation tank for a period of time, causing the secondary sedimentation tank to be unable to operate normally. In order to ensure the normal operation of the secondary sedimentation tank, when cleaning the water distribution pipe 11, only one water distribution pipe 11 can be cleaned at a time, so as to ensure that the other water distribution pipes 11 still have the water inlet function, and a large number of water distribution pipes 11 are set. If one of the water distribution pipes 11 is blocked due to cleaning, it has little impact on the water inlet demand of the secondary sedimentation tank.

[0033] Based on the above working principle, the present invention application provides two cleaning methods of the cleaning unit 2, one of which is that the cleaning unit 2 regularly cleans the water distribution pipes 11 one by one, and the other is to detect the water flow rate of the water distribution pipe 11, that is, a water flow rate sensor is set on the water distribution pipe 11, and a rated water flow rate value is preset for the water flow of the water distribution pipe 11. If blockage occurs on the water distribution pipe 11, the cleaning block 22 corresponding to the blocked water distribution pipe 11 will drop.

[0034] By arranging the cleaning unit 2 at the upper part of the tank body 1, the cleaning block 22 is always located directly above the water distribution pipe 11 when the secondary sedimentation tank is in normal operation. When the water distribution pipe 11 needs to be cleaned, the cleaning block 22 gradually descends under the drive of the threaded rod 23. The threaded rod 23 drives the cleaning block 22 to descend, so that the cleaning block 22 has a certain thrust when cleaning the sludge and impurities in the water distribution pipe 11, avoiding the situation that the cleaning block 22 is blocked by the sludge and impurities and cannot descend when descending. At the same time, when the secondary sedimentation tank is cleaned regularly, the cleaning unit 2 cleans the water distribution pipe 11 one by one, ensuring that the normal cleaning of the water distribution pipe 11 can be completed when the secondary sedimentation tank is in normal operation, reducing workload, and ensuring the working efficiency of the secondary sedimentation tank. At the same time, the cleaned sludge and impurities directly fall to the bottom of the secondary sedimentation tank for sedimentation, and there is no need to transport and process the cleaned sludge and impurities again, thereby improving the cleaning efficiency. In summary, the present invention can achieve autonomous cleaning of the water distribution pipe 11 without affecting the normal operation of the secondary sedimentation tank, while also improving the cleaning efficiency.

[0035] Reference Figures 8-10 : The cleaning unit 2 also includes a snap ring 26, a connecting unit 27 and an electromagnet 28; The clamping ring 26 is rotatably arranged just above the driving ring 24. A clamping groove 261 is formed at the lower portion of the clamping ring 26. The clamping groove 261 is a hexagonal structure. The connecting unit 27 is fixedly arranged on the upper part of the driving ring 24; The electromagnet 28 is disposed on the upper portion of the clamping ring 26 . When the electromagnet 28 is energized, the connecting unit 27 vertically extends into the clamping groove 261 , and the clamping ring 26 drives the driving ring 24 to rotate via the connecting unit 27 .

[0036] When a water distribution pipe 11 needs to be cleaned, the electromagnet 28 corresponding to the water distribution pipe 11 is energized, and the magnetic energy generated by the electromagnet 28 produces magnetic attraction on the connecting unit 27, causing the connecting unit 27 to stretch and extend into the clamping groove 261.

[0037] Reference Figure 9 : The connecting unit 27 includes a clamping block 271, a lifting rod 272 and a lifting sleeve 273; The clamping block 271 is vertically movable and arranged above the driving ring 24. The clamping block 271 can be magnetically attracted by the electromagnet 28 after power is supplied. The horizontal cross-section of the outer periphery of the clamping block 271 is a hexagonal structure and can be clamped and matched with the clamping groove 261. The lifting rod 272 is vertically fixedly arranged at the lower part of the clamping block 271; The lifting sleeve 273 is vertically fixedly disposed on the upper portion of the driving ring 24 , and the lifting rod 272 extends into the lifting sleeve 273 and is slidably engaged with the lifting sleeve 273 .

[0038] A through hole is provided in the center of the clamping block 271 for the threaded rod 23 to pass through. The threaded rod 23 does not contact the wall of the through hole. The clamping block 271 is made of metal iron, and the outside of the clamping block 271 is coated with a waterproof coating to extend the service life of the clamping block 271. The lifting rod 272 and the lifting sleeve 273 are both made of stainless steel. When the electromagnet 28 is energized, the clamping block 271 rises under the magnetic attraction of the electromagnet 28, causing the lifting rod 272 to slide out of the lifting sleeve 273. The lifting sleeve 273 provides a guiding effect on the lifting rod 272. When the cleaning unit 2 is in the cleaning state, the driving unit 25 drives the clamping ring 26, and a plurality of electromagnets 28 are provided, and the electromagnets 28 correspond to the water distribution pipes 11 one by one. The electromagnets 28 are energized one by one according to the preset program. Before the electromagnets 28 are energized, although the driving unit 25 can drive the clamping ring 26 to rotate, the clamping block 271 is not engaged with the clamping groove 261 at this time, so the driving ring 24 is in a stationary state. When the electromagnet 28 is energized, the clamping block 271 slides into the clamping groove 261 and is engaged with the clamping groove 261. At this time, the clamping ring 26 can drive the driving ring 24 through the connecting unit 27, so that the threaded rod 23 moves in the vertical direction.

[0039] Reference Figure 9 A rolling ball 274 is rotatably provided on the upper portion of the clamping block 271 , and the rolling ball 274 rolls in cooperation with the bottom portion of the clamping ring 26 .

[0040] Since the clamping block 271 rises only after the electromagnet 28 is energized, and the clamping ring 26 is always in a rotating state under the drive of the driving unit 25, the clamping block 271 cannot slide directly into the clamping groove 261. In most cases, the clamping block 271 is not aligned with the clamping groove 261, and the upper part of the clamping block 271 and the lower part of the clamping ring 26 slide relative to each other. When the ball 274 is not set, the friction coefficient between the clamping block 271 and the clamping ring 26 is large, resulting in high wear of the clamping block 271 and the clamping ring 26. After the ball 274 is set, the clamping block 271 contacts the clamping ring 26 through the ball 274, which reduces the friction coefficient between the clamping block 271 and the clamping ring 26 and extends the service life of the clamping block 271 and the clamping ring 26.

[0041] Reference Figures 8-10: A damper 275 is provided on the side wall of the lifting sleeve 273 and is connected to the lifting sleeve 273.

[0042] The damper 275 is a bidirectional damper 275, meaning that the damper 275 acts as a damper when the lifting rod 272 is raised or lowered. This is because, without the damper 275, when the electromagnet 28 is energized, the clamping block 271 rises rapidly under the magnetic attraction, causing the clamping block 271 to directly impact the bottom of the clamping ring 26, which can easily damage the clamping block 271 and the clamping ring 26. Furthermore, after the power is turned off, the clamping block 271 also descends rapidly. When the lifting rod 272 completely slides into the lifting sleeve 273, the clamping block 271 stops immediately, making the clamping block 271 susceptible to damage or deformation during the lifting process, which in turn reduces the service life of the clamping block 271. With the damper 275, the clamping block 271 can rise and fall slowly, extending its service life.

[0043] Reference Figure 2 、 Figure 6 、 Figure 9 and Figure 10 : The driving unit 25 includes a first gear ring 251, a rotation driver 252, a first gear 253 and a second gear ring 254; The first gear ring 251 is rotatably arranged on the upper portion of the bracket 21 along the axis of the tank body 1; The rotary driver 252 is vertically arranged on one side of the first gear ring 251; The first gear 253 is fixedly disposed on the output end of the rotary driver 252 , and the first gear 253 is engaged with the first gear ring 251 ; The second gear ring 254 is fixedly sleeved on the outside of the clamping ring 26 , and the second gear ring 254 is meshed with the first gear ring 251 .

[0044] The rotary driver 252 is preferably a servo motor. The rotary driver 252 drives the first gear ring 251 to rotate via the first gear 253. The first gear ring 251 then drives the second gear ring 254 to rotate, thereby driving the snap ring 26 to rotate. When the connecting unit 27 corresponding to the snap ring 26 is not connected to the snap ring 26, only the snap ring 26 rotates, while the drive ring 24 is stationary. When the connecting unit 27 is connected to the snap ring 26, the snap ring 26 and the drive ring 24 rotate synchronously.

[0045] Reference Figure 9 A cleaning brush for cleaning the upper portion of the cleaning block 22 is rotatably provided at the lower portion of the bracket 21, and the cleaning brush is an annular structure.

[0046] After the cleaning block 22 completely cleans the water distribution pipe 11, the cleaning block 22 gradually rises from the lower part of the water distribution pipe 11 and passes through the water distribution pipe 11. When the cleaning block 22 is completely reset, the cleaning block 22 is directly above the water distribution pipe 11, and the cleaning brush is in contact with the cleaning block 22. When the cleaning brush rotates, it can sweep away the sludge and impurities remaining on the cleaning block 22.

[0047] Reference Figure 6 and Figure 10 : A transmission assembly 31 is provided between the cleaning brush and the driving unit 25, and the driving unit 25 drives the cleaning brush to rotate through the transmission assembly 31.

[0048] The transmission assembly 31 includes a third gear ring 311, a second gear 312, a third gear 313, and a fourth gear ring 314. The third gear ring 311 is disposed below the first gear ring 251 and rotates synchronously with the first gear ring 251. The second gear 312 is rotatably disposed on one side of the third gear ring 311 and meshes with the third gear ring 311. The second gear 312 is located at the top of the bracket 21, and the third gear 313 is rotatably disposed at the bottom of the bracket 21. A connecting shaft is disposed between the second gear 312 and the third gear 313, and the second gear 312 and the third gear 313 rotate synchronously. The fourth gear ring 314 is fixedly mounted on the periphery of the cleaning brush and meshes with the third gear 313. Therefore, when the drive unit 25 is activated, the cleaning brush is in a continuous rotation state driven by the transmission assembly 31.

[0049] Reference Figure 9 : A water sprayer 4 is provided on the periphery of the cleaning brush 3, and the water sprayer 4 is a ring structure.

[0050] After the cleaning block 22 completes cleaning the water distribution pipe 11 and before the cleaning block 22 contacts the cleaning brush, the sprinkler 4 starts to spray clean water. Under the joint action of the cleaning brush and clean water, the cleaning effect of the upper part of the clamping block 271 is improved.

[0051] Reference Figures 1-10 : Cleaning block 22 is a hollow structure.

[0052] By configuring the cleaning block 22 as a hollow structure, the load on the driving unit 25 when driving the cleaning block 22 to move up and down through the threaded rod 23 is reduced.

[0053] Working principle: When the secondary sedimentation tank is in normal operation, the cleaning block 22 is located just above the water distribution pipe 11, and the sewage in the water inlet channel 12 can flow normally into the secondary sedimentation tank through the water distribution pipe 11. As the use time goes by, the water distribution pipe 11 is gradually blocked by sludge and impurities. At this time, the cleaning block 22 located on the upper part of the water distribution pipe 11 gradually descends under the drive of the threaded rod 23. It is worth noting that the threaded rod 23 can only move in the vertical direction, and the bracket 21 limits the rotation of the threaded rod 23. When the cleaning block 22 needs to be lowered, the drive ring 24 starts to rotate, and the drive ring 24 and the threaded rod 23 are connected. The rod 23 is threadedly engaged, so that the threaded rod 23 drives the cleaning block 22 to move from top to bottom, and the cleaning block 22 gradually descends and slides into the water distribution pipe 11. Since the cleaning block 22 is a circular structure, and the diameter of the cleaning block 22 is the same as the inner diameter of the water distribution pipe 11, after the cleaning block 22 slides into the water distribution pipe 11, the cleaning block 22 can scrape off the sludge and impurities attached to the inner wall of the water distribution pipe 11. If the water distribution pipe 11 is blocked, the cleaning block 22 can also push out the blockage in the water distribution pipe 11 during the descending process, so that the blockage enters the bottom of the secondary sedimentation tank and settles. Since there are multiple water distribution pipes 11, when the cleaning unit 2 cleans the water distribution pipes 11, only one water distribution pipe 11 is in the cleaning state at a time. This is because when the cleaning block 22 cleans the water distribution pipe 11, the water distribution pipe 11 will be blocked. When the cleaning block 22 completely passes through the water distribution pipe 11 from top to bottom, it needs to rise and reset. When the cleaning block 22 rises and resets, it will still pass through the water distribution pipe 11, which will also cause the water distribution pipe 11 to be blocked. If all the water distribution pipes 11 are cleaned at the same time, all the water distribution pipes 11 will be blocked, and then no sewage will be injected into the secondary sedimentation tank for a period of time, causing the secondary sedimentation tank to be unable to operate normally. In order to ensure the normal operation of the secondary sedimentation tank, when cleaning the water distribution pipe 11, only one water distribution pipe 11 can be cleaned at a time, so as to ensure that the other water distribution pipes 11 still have the water inlet function, and a large number of water distribution pipes 11 are set. If one of the water distribution pipes 11 is blocked due to cleaning, it has little impact on the water inlet demand of the secondary sedimentation tank.

[0054] Based on the above working principle, the present invention application provides two cleaning methods of the cleaning unit 2, one of which is that the cleaning unit 2 regularly cleans the water distribution pipes 11 one by one, and the other is to detect the water flow rate of the water distribution pipe 11, that is, a water flow rate sensor is set on the water distribution pipe 11, and a rated water flow rate value is preset for the water flow of the water distribution pipe 11. If blockage occurs on the water distribution pipe 11, the cleaning block 22 corresponding to the blocked water distribution pipe 11 will drop.

[0055] The above embodiments merely represent one or more embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An online cleaning device based on a water distribution pipe of a secondary sedimentation tank, comprising a tank body (1) and a plurality of water distribution pipes (11) uniformly arranged on the tank body (1) around the axis of the tank body (1); It is characterized by: A cleaning unit (2) is provided above the tank body (1), and the cleaning unit (2) comprises a bracket (21), a cleaning block (22), a threaded rod (23), a driving ring (24), and a driving unit (25); The bracket (21) is fixedly arranged on the upper part of the tank body (1); A plurality of cleaning blocks (22) are provided, and the cleaning blocks (22) correspond to the water distribution pipes (11) one by one. The cleaning blocks (22) can move in a vertical direction and penetrate the water distribution pipes (11). The cleaning blocks (22) are circular in structure, and the diameter of the cleaning blocks (22) is the same as the inner diameter of the water distribution pipes (11). The threaded rod (23) is vertically fixedly arranged on the upper part of the cleaning block (22), and the threaded rod (23) vertically penetrates the bracket (21) and is slidably matched with the bracket (21); The driving ring (24) is rotatably arranged on the upper part of the bracket (21), the driving ring (24) is sleeved on the outer periphery of the threaded rod (23), and the inner ring of the driving ring (24) is threadably matched with the threaded rod (23); The driving unit (25) is arranged on the bracket (21) and is used to drive the driving ring (24) to rotate.

2. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 1 is characterized in that: The cleaning unit (2) further comprises a snap ring (26), a connecting unit (27) and an electromagnet (28); The clamping ring (26) is rotatably arranged just above the driving ring (24), and a clamping groove (261) is provided at the lower portion of the clamping ring (26), and the clamping groove (261) is a hexagonal structure; The connecting unit (27) is fixedly arranged on the upper part of the driving ring (24); The electromagnet (28) is arranged on the upper part of the clamping ring (26). When the electromagnet (28) is energized, the connecting unit (27) is elongated in the vertical direction and extends into the clamping groove (261). The clamping ring (26) drives the driving ring (24) to rotate through the connecting unit (27).

3. The online cleaning device based on the secondary sedimentation tank inlet water distribution pipe according to claim 2 is characterized in that: The connecting unit (27) includes a clamping block (271), a lifting rod (272) and a lifting sleeve (273); The clamping block (271) is vertically movable and arranged above the driving ring (24). The clamping block (271) can be magnetically attracted by the electromagnet (28) after being energized. The horizontal cross-section of the outer periphery of the clamping block (271) is a hexagonal structure and can be clamped and matched with the clamping groove (261). The lifting rod (272) is vertically fixedly arranged at the lower part of the clamping block (271); The lifting sleeve (273) is vertically fixedly arranged on the upper part of the driving ring (24), and the lifting rod (272) extends into the lifting sleeve (273) and is slidably matched with the lifting sleeve (273).

4. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 3 is characterized in that: A rolling ball (274) is rotatably provided on the upper portion of the clamping block (271), and the rolling ball (274) is in rolling engagement with the bottom portion of the clamping ring (26).

5. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 3 is characterized in that: A damper (275) in communication with the lifting sleeve (273) is provided on the side wall of the lifting sleeve (273).

6. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 2 is characterized in that: The drive unit (25) includes a first gear ring (251), a rotary driver (252), a first gear (253) and a second gear ring (254); The first gear ring (251) is rotatably arranged on the upper part of the bracket (21) along the axis of the tank body (1); The rotary driver (252) is vertically arranged on one side of the first gear ring (251); The first gear (253) is fixedly arranged on the output end of the rotary driver (252), and the first gear (253) is meshed with the first gear ring (251); The second gear ring (254) is fixedly sleeved on the outside of the clamping ring (26), and the second gear ring (254) is meshed with the first gear ring (251).

7. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 1 is characterized in that: A cleaning brush for cleaning the upper portion of the cleaning block (22) is rotatably provided at the lower portion of the bracket (21), and the cleaning brush is an annular structure.

8. The online cleaning device based on the secondary sedimentation tank inlet water distribution pipe according to claim 7 is characterized in that: A transmission assembly (31) is provided between the cleaning brush and the driving unit (25), and the driving unit (25) drives the cleaning brush to rotate via the transmission assembly (31).

9. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 7 is characterized in that: A water sprayer (4) is provided on the periphery of the cleaning brush (3), and the water sprayer (4) is an annular structure.

10. The online cleaning device based on the water distribution pipe of the secondary sedimentation tank according to claim 1 is characterized in that: The cleaning block (22) is a hollow structure.

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