Automatic cleaning device for secondary sedimentation tank effluent weir

Abstract

The present application relates to a kind of automatic cleaning device of secondary sedimentation tank effluent weir, it includes secondary sedimentation tank, is set on the mud scraper bridge of the secondary sedimentation tank and effluent weir, total control module is set on the mud scraper bridge, and the spray mechanism and cleaning mechanism electrically connected to the total control module, the cleaning mechanism includes the walking support of rolling installation in the effluent weir, the scraper of setting in the walking direction front side of the walking support, a pair of respectively electrically contacted in the sidewall of the effluent weir electric brush, and longitudinal self-adapting component and transverse adjustment control component between the walking support and electric brush are set, the water outlet of the spray mechanism is towards the pair of electric brush.The present application solves the problem that the existing mud scraper brush is low in degree of automation, needs to be periodically disassembled and cleaned, while giving consideration to cleaning efficiency, can effectively remove each dirt of effluent weir.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to an automatic cleaning device for a secondary sedimentation tank outlet weir. Background Art

[0002] Secondary sedimentation tanks are critical structures in sewage treatment plants, serving multiple functions, including secondary sedimentation and providing return sludge to the biochemical tanks. These tanks directly impact the plant's effluent quality. The triangular weirs at the effluent of these plants are prone to severe growth of duckweed and green algae due to photosynthesis, leading to blockage and uneven effluent flow. In summer, large amounts of algae can adhere to the weirs. If left uncleaned for an extended period, these weirs can damage downstream processes and affect effluent quality.

[0003] Currently, moss and duckweed on the secondary sedimentation tank's outlet weir are typically cleaned manually. Workers wearing waterproof and safety gear must enter the tank and use tools such as rakes, brushes, and nets to clean the moss and duckweed. They must start from the outside of the outlet channel and slowly flush along the outlet weir. The entire process is time-consuming and laborious. Prolonged exposure to high temperatures in the summer poses a risk of heatstroke, while prolonged immersion in the water in the winter can easily lead to frostbite. Furthermore, because the pool walls are slippery due to moss, there is a safety risk of falling into the pool and drowning.

[0004] The Chinese patent with authorization announcement number CN208081939U discloses a scraper for a sedimentation tank, including a scraper bridge, a scraper plate, a cleaning device and a driving device; the cleaning device is installed at the lower end of the above-mentioned scraper bridge and extends into the above-mentioned water outlet weir, so as to move in the above-mentioned water outlet weir as the above-mentioned scraper bridge rotates horizontally, and clean the pollutants inside the above-mentioned water outlet weir; the cleaning device includes a driving mechanism, a roller and a brush, the above-mentioned driving mechanism is installed at the position of the water outlet weir corresponding to the lower end of the above-mentioned scraper bridge through a bracket, and its driving end faces downward, the above-mentioned roller is a vertically arranged cylinder, the upper end of which is coaxially connected to the above-mentioned driving end, and the lower end of which extends into the above-mentioned water outlet weir near its bottom wall, the above-mentioned brush is strip-shaped, and there are multiple strips, each of the above-mentioned brushes is arranged along the axial direction of the above-mentioned roller, and the multiple brushes are detachably installed on the outer wall of the roller at equal intervals along the circumference of the above-mentioned roller, and contact the inner walls on both sides of the above-mentioned water outlet weir.

[0005] The above-mentioned existing technical solutions have the following defects: the above-mentioned scraper drives the brush to clean the inner wall of the outlet weir through the manually started driving mechanism to reduce the adhesion of dirt such as moss and duckweed. After the brushing is completed, the fallen moss, duckweed and other dirt will still float on the water surface instead of moving with the brush. It is necessary to manually salvage the outlet weir for a week, and the brush also needs to be manually disassembled and cleaned regularly to ensure the cleaning effect of the brush. Therefore, the automation of the above-mentioned scraper is relatively low, and manual single-machine assistance is still required for regular cleaning, which needs to be improved. SUMMARY

[0006] The present application aims to solve the problems existing in the prior art and provides an automatic cleaning device for a secondary sedimentation tank effluent weir, which has self-cleaning function and can drive the detached algae, duckweed and other pollutants to move towards the effluent outlet of the effluent weir, solves the problem of low automation degree of the existing mud scraper brush and the need for regular disassembly and cleaning, and can effectively remove various pollutants from the effluent weir.

[0007] The above invention purpose of the present application is realized by the following technical scheme:

[0008] An automatic cleaning device for a secondary sedimentation tank effluent weir, comprising a secondary sedimentation tank, a mud scraping bridge arranged on the secondary sedimentation tank, and an effluent weir, wherein the mud scraping bridge is provided with a general control module, and a spraying mechanism and a cleaning mechanism electrically connected to the general control module, the cleaning mechanism comprises a walking support rollingly installed in the effluent weir, a scraper plate arranged on the front side of the walking direction of the walking support, a pair of electric brushes respectively abutting against the side walls of the effluent weir, and a longitudinal self-adaptive component and a transverse adjustment control component arranged between the walking support and the electric brushes, and the water outlet of the spraying mechanism faces the pair of electric brushes.

[0009] By adopting the above technical scheme, the components in the general control module automatically operate and control, the spraying mechanism and the cleaning mechanism move synchronously with the mud scraping bridge, and take power from the general control module. During use, the walking support moves in a circle in the effluent weir without assistance, the electric brushes continuously brush the algae, duckweed and other pollutants on the inner wall of the effluent weir, and the scraper plate forces the detached algae, duckweed and other pollutants to move towards the effluent outlet of the effluent weir. At the same time, the spraying mechanism uses high-pressure water to flush the effluent weir area and the surface of the electric brushes to remove residual algae, duckweed and other pollutants, realizing self-cleaning function. During the cleaning process, the general control module controls the actions of the mud scraping bridge, the spraying mechanism and the cleaning mechanism, so that the brushing time is controllable, the brushing effect is improved, the equipment runs stably and reliably, and various pollutants in the effluent weir can be effectively removed. In this process, the cleaning mechanism automatically walks in the effluent weir for brushing, and the spraying mechanism sprays high-pressure water for brushing and self-cleaning. The scraper plate can drive the detached algae, duckweed and other pollutants to move towards the effluent outlet of the effluent weir during walking, solving the problem of low automation degree of the existing mud scraper brush and the need for regular disassembly and cleaning. While considering the cleaning efficiency, various pollutants in the effluent weir can be effectively removed.

[0010] In addition, the automatic cleaning device includes two modes: automatic timing control and induction control, and can also be controlled manually on site; the automatic timing control uses two sets of time relays to set the running and stopping timings to realize automatic flushing according to the preset time, which can achieve different cleaning intensity requirements in different seasons, and can not only ensure the flushing needs but also be more energy-efficient; the induction control uses a pressure sensor to sense the contact pressure between the electric brush and the water outlet weir to set the electric brush feeding and stopping process, and realize intermittent flushing according to the preset pressure; on-site manual control is mainly used during equipment failure and debugging; the lateral adjustment control component structures corresponding to the above-mentioned automatic timing control and induction control are as follows.

[0011] Preferably, the lateral adjustment control component includes a support plate slidably connected to the traveling bracket, an adjustment screw rotatably connected to the support plate, an adjustment nut and a relay arranged on the traveling bracket, the adjustment nut is threadedly connected to the adjustment screw, the master control module is electrically connected to the relay, and the longitudinal adaptive component is arranged on the support plate.

[0012] Alternatively, the lateral adjustment control component includes a support plate slidingly connected to the walking bracket, and an adjustment cylinder and a relay arranged on the walking bracket, the main control module is electrically connected to the adjustment cylinder and the relay, and the longitudinal adaptive component is arranged on the support plate.

[0013] Alternatively, the lateral adjustment control component includes a support plate slidably connected to the traveling bracket, a transmission nut rotatably connected to the support plate, and a screw motor and a relay arranged on the traveling bracket. The screw shaft of the screw motor is passed through the support plate and is threadedly connected to the transmission nut. The master control module is electrically connected to the screw motor and the relay, and the longitudinal adaptive component is arranged on the support plate.

[0014] Whether it is manual adjustment of the adjusting screw and adjusting nut, pneumatic adjustment of the adjusting cylinder, or screw adjustment of the transmission nut and screw motor, the spacing between the pair of electric brushes can be adjusted according to the width of the water outlet weir to ensure good contact between the electric brush and the water outlet weir. The relay is then timed to control the timing of the operation and stop of the adjusting cylinder or screw motor relay and the spray mechanism through the master control module. The brushing time is adjusted through the visual interface, and overload protection is provided to prevent damage to the spray mechanism. The intermittent operation has significant energy-saving benefits.

[0015] Alternatively, the lateral adjustment control component includes a support plate slidably connected to the walking bracket, a flexible abutment rod and an elastic electromagnetic part arranged on the support plate, and a permanent magnet linear motor and a pressure sensor arranged on the walking bracket, the mover of the permanent magnet linear motor is arranged on the end of the elastic electromagnetic part, the flexible abutment rod abuts against the detection end of the pressure sensor, the main control module is electrically connected to the elastic electromagnetic part, the permanent magnet linear motor and the pressure sensor, and the longitudinal adaptive component is arranged on the support plate.

[0016] Furthermore, the elastic electromagnetic component includes a linear bearing with a reader, a sliding sleeve with a magnetic scale and a compression spring that are sequentially arranged from the inside to the outside. The linear bearing is arranged on the support plate, the sliding sleeve and the compression spring are arranged on the mover of the permanent magnet linear motor, and the end of the compression spring is in contact with the support plate, and the reader slides in contact with the magnetic scale. Among them, the end of the flexible abutment rod is made of flexible material, which maintains flexible contact with the detection end of the pressure sensor; when the dirt attached to a certain area of ​​the water outlet weir thickens, the compression spring is used to compress the thickened surface to reduce the impact on the pressure sensor, and the pressure sensor can feed back the detected pressure signal to the main control module. At the same time, the movement of the support plate is directly measured by the magnetic scale, which can eliminate the error caused by the slight expansion and contraction of the compression spring to achieve state feedback of the support plate displacement. The main control module can combine the pressure signal and the state feedback signal to estimate the output feedback of the permanent magnet linear motor to make the mover of the permanent magnet linear motor expand and contract. The pressure between the pressure sensor and the flexible abutment rod is dynamically adjusted to a predetermined value, thereby maintaining a suitable brushing pressure between the electric brush and the water outlet weir, and the auxiliary dirt on the water outlet weir also falls off layer by layer; at the same time, the main control module can adjust the rotation speed of the scraper bridge to match the brushing operation of the electric brush under different dirt thicknesses, and the variable frequency operation has significant energy-saving benefits.

[0017] Furthermore, the electric brush is slidably connected to the support plate, and the longitudinal adaptive assembly includes several pairs of positioning bolts that slide through the support plate and springs that fit over the positioning bolts. The two positioning bolts in each pair contact the upper and lower sides of the electric brush, respectively, and the ends of the spring are fixed to the support plate and the positioning bolts, respectively. The electric brush primarily consists of a motor portion that slides on the support plate and a brush portion that rotatably connects to the motor. During brush rotation, the positioning bolts are connected to the support plate via the spring to maintain contact with the brush surface. When the dirt surface at the water outlet weir thickens locally, the preload of the spring can be used to drive the electric brush to slide up and down, achieving higher scrubbing efficiency.

[0018] Preferably, the spray mechanism includes a water inlet pipe, a submersible sewage pump, a water pipe and a pair of nozzles connected in sequence along the water outlet direction, and the water outlet directions of the pair of nozzles are respectively toward the pair of electric brushes.

[0019] Furthermore, the water inlet of the water inlet pipe is located in the supernatant section of the secondary sedimentation tank, the submersible sewage pump is installed 0.5 to 1.0 meters below the water surface of the secondary sedimentation tank, and the nozzle is a fan-shaped nozzle that is rotatably connected to the water supply pipe. The nozzle has an aperture of 2 to 3 mm and a rotation angle of 40 to 60 degrees along the vertical plane. This arrangement ensures the placement depth of the submersible sewage pump, preventing the liquid level from being too low or sucking in sludge, which may cause damage to the submersible sewage pump or nozzle clogging. At the same time, the structure of the fan-shaped nozzle can increase the water spraying area and range, while avoiding nozzle clogging, and can achieve high-pressure flushing of the water outlet weir and electric brush. In addition, the water inlet pipe and water supply pipe are made of stainless steel, and the connecting parts are equipped with movable joints to facilitate repair.

[0020] Preferably, the master control module includes a central bridge mounted on the secondary sedimentation tank, a control box and a multi-electrode tubular busbar mounted on the central bridge, a pull fork slidably connected to the central bridge, and a tubular current collector mounted on the pull fork and cooperating with the multi-electrode tubular busbar. The control box is electrically connected to the multi-electrode tubular busbar, and the tubular current collector is electrically connected to the spray mechanism, electric brush, and lateral adjustment control assembly. The multi-electrode tubular busbar and its matching tubular current collector serve as the main power transmission structure and are connected to the main power source in the control box for power transmission. The tubular current collector is provided with a slider and a housing to form the main power cable connection for the spray mechanism, electric brush, and lateral adjustment control assembly, serving as an electrical connection carrier. The pull fork, as an auxiliary walking connection part, clamps the tubular current collector at one end and the central bridge at the other end to ensure the normal operation of the tubular current collector on the multi-electrode tubular busbar.

[0021] Furthermore, the control box is equipped with leakage protection and overload protection. Time control or single-chip microcomputer control is used within the control cabinet. The time control interval can be set to multiple intervals according to actual conditions, with a single operation time of 20-40 minutes. The circuit is also disconnected when a leakage current reaches a certain level, avoiding the major safety hazards of water in the tank or the central bridge being electrified, and preventing equipment damage.

[0022] Furthermore, the central bridge is provided with a rain shield arranged above the multi-pole tubular busbar to prevent rainwater from intruding and causing short circuit damage to the equipment.

[0023] Preferably, the outlet of the weir is provided with an outlet pipe and an outlet box, the inlet section of the outlet box is provided with a filter screen, and the outlet end of the outlet pipe extends above the filter screen. After moss, duckweed and other impurities move toward the outlet of the weir, clean water falls into the outlet box and flows to the next process, while moss, duckweed and other impurities are trapped on the filter screen for easy removal.

[0024] In summary, the beneficial technical effects of the present application are: through the automatic walking of the cleaning mechanism out of the weir to brush, and supplemented by the spraying mechanism to spray high pressure water to brush, the scraper can drive the fallen moss, duckweed and other pollutants to move towards the water outlet of the weir, solving the problem of low degree of automation of the existing mud scraper brush, the need for regular disassembly and cleaning, while taking into account the cleaning efficiency, the various pollutants of the weir can be effectively removed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a top view structural schematic diagram of the automatic cleaning device of the secondary sedimentation tank effluent weir of the embodiment 1 of the present application.

[0026] Figure 2 is Figure 1 the local enlarged schematic diagram of part A in the figure.

[0027] Figure 3 is a sectional view structural schematic diagram of the automatic cleaning device of the secondary sedimentation tank effluent weir of the embodiment 1 of the present application.

[0028] Figure 4 is Figure 3 the local enlarged schematic diagram of part B in the figure.

[0029] Figure 5 is a sectional view structural schematic diagram of the cleaning mechanism of the embodiment 1 of the present application.

[0030] Figure 6 is a schematic diagram of the connection relationship between the secondary sedimentation tank, the mud scraping and the total control module of the embodiment 1 of the present application.

[0031] Figure 7 is a top view structural schematic diagram of the cleaning mechanism of the embodiment 2 of the present application.

[0032] Figure 8 is a top view structural schematic diagram of the cleaning mechanism of the embodiment 3 of the present application.

[0033] Figure 9 is a top view structural schematic diagram of the cleaning mechanism of the embodiment 4 of the present application.

[0034] In the figure, 1, secondary sedimentation tank; 2, scraper bridge; 3, outlet weir; 4, master control module; 41, center bridge; 42, control box; 43, multi-pole tubular busbar; 44, pull fork; 45, tubular collector; 5, cleaning mechanism; 51, walking bracket; 52, scraper; 53, electric brush; 54, lateral adjustment control assembly; 541, support plate; 542, adjustment screw; 543, adjustment nut; 544, relay; 551, adjustment cylinder; 561, transmission nut; 562, screw rod Machine; 571, flexible abutment rod; 572, elastic electromagnetic component; 5721, reading head; 5722, linear bearing; 5723, magnetic scale; 5724, sliding sleeve; 5725, compression spring; 573, permanent magnet linear motor; 574, pressure sensor; 58, longitudinal adaptive component; 581, positioning bolt; 582, spring; 6, spray mechanism; 61, water inlet pipe; 62, submersible sewage pump; 63, water pipe; 64, sprinkler head; 7, water outlet pipe; 8, water outlet tank; 81, filter. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further explained below with reference to the accompanying drawings and specific implementation methods.

[0036] Example 1: Reference Figure 1 , which is an automatic cleaning device for the outlet weir of a secondary sedimentation tank disclosed in the present invention, comprising a secondary sedimentation tank 1, a scraper bridge 2 and an outlet weir 3 provided on the secondary sedimentation tank 1, a master control module 4 provided on the scraper bridge 2, a spray mechanism 6 and a cleaning mechanism 5 electrically connected to the master control module 4. The automatic cleaning device includes two modes: automatic timing control and induction control, and can also be manually controlled on site. Automatic timing control uses two sets of time relays 544 to set the timing of operation and stop, so that the spray mechanism 6 and the cleaning mechanism 5 automatically flush according to the preset time, and can meet different cleaning intensity requirements in different seasons, which can not only meet the flushing needs but also be more energy-efficient; induction control uses a pressure sensor 574 to sense the contact pressure between the cleaning mechanism 5 and the outlet weir 3 to set the feeding and stopping process of the cleaning mechanism 5, and is assisted by the spray mechanism 6 for self-cleaning, so as to achieve intermittent flushing according to the preset pressure; on-site manual control is mainly used when the equipment fails and is debugged.

[0037] Reference Figure 2This embodiment utilizes automatic timing control. The cleaning mechanism 5 comprises a traveling frame 51 that is rotatably mounted within the weir 3, a scraper 52 positioned forward of the traveling frame 51, a pair of electric brushes 53 that respectively abut the sidewalls of the weir 3, and a longitudinal adaptive assembly 58 and a transverse adjustment control assembly 54 positioned between the traveling frame 51 and the electric brushes 53. The water outlet of the spray mechanism 6 faces the pair of electric brushes 53. Furthermore, the outlet of the weir 3 is provided with a water outlet pipe 7 and a water outlet tank 8. A filter screen 81 is provided at the inlet of the water outlet tank 8, and the outlet end of the water outlet pipe 7 extends above the filter screen 81. After moss, duckweed, and other impurities move toward the outlet of the weir 33, the clean water falls into the water outlet tank 8 and flows to the next process. The moss, duckweed, and other impurities are trapped on the filter screen 81 for easy removal.

[0038] Reference Figure 3 During actual use, the various components within the master control module 4 automatically operate and control the spray mechanism 6 and cleaning mechanism 5, which move synchronously with the scraper bridge 2 and draw power from the master control module 4. During operation, the traveling bracket 51 moves in an unassisted circular motion within the outlet weir 3 along with the scraper bridge 2. The electric brush 53 continuously scrubs moss, duckweed, and other dirt from the inner wall of the outlet weir 3, and forces the detached moss, duckweed, and other dirt toward the outlet of the outlet weir 3 via the scraper 52. Simultaneously, the spray mechanism 6 flushes the outlet weir 3 area and the surface of the electric brush 53 with high-pressure water to remove residual moss, duckweed, and other dirt, achieving a self-cleaning function. During the cleaning process, the master control module 4 controls the operation of the scraper bridge 2, spray mechanism 6, and cleaning mechanism 5, making the scrubbing time controllable and improving the scrubbing effect. The equipment operates stably and reliably, effectively removing all dirt from the outlet weir 3. During this process, the cleaning mechanism automatically moves to the outlet weir 3 for brushing, and is assisted by the spraying mechanism 6 to spray high-pressure water for brushing and self-cleaning. During the movement, the scraper 52 can drive the fallen moss, duckweed and other dirt to move toward the outlet of the outlet weir 3, solving the problem that the existing scraper brush has a low degree of automation and needs to be disassembled and cleaned regularly. While taking into account the cleaning efficiency, it can effectively remove various dirt from the outlet weir 3.

[0039] Reference Figure 4 Specifically, the lateral adjustment control assembly 54 includes a support plate 541 slidably connected to the traveling frame 51, an adjustment screw 542 rotatably connected to the support plate 541, an adjustment nut 543 disposed on the traveling frame 51, and a relay 544. The adjustment nut 543 is threadedly connected to the adjustment screw 542, the master control module 4 is electrically connected to the relay 544, and the longitudinal adaptive assembly 58 is disposed on the support plate 541.

[0040] Reference Figure 5The electric brush 53 is connected to the support plate 541 in a sliding manner. The longitudinal adaptive component 58 includes several pairs of positioning bolts 581 that are slidably inserted into the support plate 541, and springs 582 that are sleeved on the positioning bolts 581. The two positioning bolts 581 of each pair respectively contact the upper and lower sides of the electric brush 53, and the two ends of the spring 582 are respectively fixed to the support plate 541 and the positioning bolts 581. The electric brush 53 mainly consists of a motor part that is slidably connected to the support plate 541 and a brush part that is rotatably connected to the motor. During the rotation of the brush, the positioning bolt 581 is connected to the support plate 541 through the spring 582 to maintain contact with the brush surface. When the dirt surface of the water outlet weir 3 is locally thickened, the pre-pressure of the spring 582 can be used to drive the electric brush 53 to slide up and down to achieve a higher brushing efficiency.

[0041] Reference Figure 4 and Figure 6 Furthermore, the spray mechanism 6 includes a water inlet pipe 61, a submersible sewage pump 62, a water delivery pipe 63, and a pair of nozzles 64, which are sequentially connected along the water outlet direction. The pair of nozzles 64 respectively direct water outlet toward the pair of electric brushes 53. The water inlet of the water pipe is located in the supernatant section of the secondary sedimentation tank 1. The submersible sewage pump 62 is located 0.5 to 1.0 m below the water surface of the secondary sedimentation tank 1. The nozzles 64 are fan-shaped nozzles that are rotatably connected to the water delivery pipe 63. The nozzles 64 have an aperture of 2 to 3 mm and a rotation angle of 40 to 60 degrees along the vertical plane. The above arrangement can ensure the placement depth of the submersible sewage pump 62, prevent the liquid level from being too low or sludge from being sucked in, which may cause damage to the submersible sewage pump 62 or clogging of the nozzle 64; at the same time, the structure of the fan-shaped nozzle can increase the water spraying area and range, while avoiding clogging of the nozzle 64, it can achieve high-pressure flushing of the water outlet weir 3 and the electric brush 53; in addition, the water inlet pipe 61 and the water supply pipe 63 are made of stainless steel, and the connecting parts are provided with movable joints for easy repair.

[0042] Reference Figure 6Correspondingly, the master control module 4 includes a central bridge 41 mounted on the secondary sedimentation tank 1, a control box 42 and a multi-pole tubular busbar 43 mounted on the central bridge 41, a pull fork 44 slidably connected to the central bridge 41, and a tubular current collector 45 mounted on the pull fork 44 and cooperating with the multi-pole tubular busbar 43. The scraper bridge 2 is rotatably connected to the central bridge 41, the control box 42 is electrically connected to the multi-pole tubular busbar 43, and the tubular current collector 45 is electrically connected to the submersible sewage pump 62, the electric brush 53, and the relay 544. The multi-pole tubular busbar 43 and its matching tubular current collector 45 are connected to the main power supply in the control box 42 as the main transmission structure for power transmission; wherein, the tubular current collector 45 is provided with a slider and a shell to constitute the main power cable connection of the spray mechanism 6, the electric brush 53 and the lateral adjustment control component 54, which serves as an electrical connection carrier, and the fork 44 is used as the auxiliary walking connection part to clamp the tubular current collector 45 at one end and the center bridge 41 at the other end to ensure the normal operation of the tubular current collector 45 on the multi-pole tubular busbar 43.

[0043] To mitigate safety risks, the control box 42 is equipped with leakage protection and overload protection (not shown). The control cabinet utilizes timer control or single-chip microcomputer control. Timer intervals can be set to multiple intervals based on actual conditions, with a single operation time of 20 to 40 minutes. Furthermore, a circuit breaker function is implemented to shut off the circuit when leakage reaches a certain level, preventing the significant safety hazard of water in the tank or the central bridge 41 becoming energized, thus preventing equipment damage. Furthermore, a rain shield is installed above the multi-pole busbar 43 on the central bridge 41 to prevent rainwater intrusion and short-circuit damage to the equipment.

[0044] Example 2: Reference Figure 7 , which is an automatic cleaning device for the secondary sedimentation tank outlet weir disclosed in the present invention. The difference from Example 1 is that this embodiment adopts automatic timing control for regulation. The lateral adjustment control component 54 includes a support plate 541 slidably connected to the traveling bracket 51, and an adjustment cylinder 551 and a relay 544 arranged on the traveling bracket 51. The main control module 4 is electrically connected to the adjustment cylinder 551 and the relay 544. The longitudinal adaptive component 58 is arranged on the support plate 541.

[0045] Example 3: Reference Figure 8, which is an automatic cleaning device for the secondary sedimentation tank outlet weir disclosed in the present invention. The difference from Example 1 is that this embodiment adopts automatic timing control for regulation. The lateral adjustment control component 54 includes a support plate 541 slidably connected to the traveling bracket 51, a transmission nut 561 rotatably connected to the support plate 541, and a screw motor 562 and a relay 544 arranged on the traveling bracket 51. The screw shaft of the screw motor 562 is passed through the support plate 541 and is threadedly connected to the transmission nut 561. The master control module 4 is electrically connected to the screw motor 562 and the relay 544. The longitudinal adaptive component 58 is arranged on the support plate 541.

[0046] Example 4: Reference Figure 9 , is an automatic cleaning device for the secondary sedimentation tank outlet weir disclosed in the present invention. The difference from Example 1 is that this embodiment adopts an inductive control method for regulation. The lateral adjustment control component 54 includes a support plate 541 slidably connected to the traveling bracket 51, a flexible abutting rod 571 and an elastic electromagnetic member 572 provided on the support plate 541, and a permanent magnet linear motor 573 and a pressure sensor 574 provided on the traveling bracket 51. The mover of the permanent magnet linear motor 573 is provided on the end of the elastic electromagnetic member 572, and the flexible abutting rod 571 abuts against the pressure sensor 574. At the detection end, the elastic electromagnetic component 572 includes a linear bearing 5722 with a reader 5721, a sleeve 5724 with a magnetic scale 5723, and a compression spring 5725, which are sequentially arranged from the inside to the outside. The linear bearing 5722 is arranged on the support plate 541, the sleeve 5724 and the compression spring 5725 are arranged on the mover of the permanent magnet linear motor 573, and the end of the compression spring 5725 is in contact with the support plate 541, the reader 5721 slides in contact with the magnetic scale 5723, and the tubular current collector 45 is electrically connected to the magnetic scale 5723, the permanent magnet linear motor 573 and the pressure sensor 574.

[0047] Because the end of the flexible abutment rod 571 is made of a flexible material, it maintains flexible contact with the detection end of the pressure sensor 574. When the dirt attached to a certain area of ​​the water outlet weir 3 thickens, the compression spring 5725 is used to compress the thickened surface to reduce the impact on the pressure sensor 574. The pressure sensor 574 can feed back the detected pressure signal to the main control module 4. At the same time, the magnetic scale 5723 directly measures the movement of the support plate 541, eliminating the error caused by the slight expansion and contraction of the compression spring 5725, thereby achieving state feedback of the displacement of the support plate 541. The main control module 4 can then combine the pressure signal and the state feedback signal to estimate the output feedback of the permanent magnet linear motor 573, thereby causing the mover of the permanent magnet linear motor 573 to expand and contract. The pressure between the pressure sensor 574 and the flexible abutment rod 571 is then dynamically adjusted to a predetermined value, thereby maintaining an appropriate scrubbing pressure between the electric brush 53 and the water outlet weir 3, and the dirt on the water outlet weir 3 is gradually removed. At the same time, the master control module 4 can adjust the rotation speed of the scraper bridge 2 to match the scrubbing operation of the electric brush 53 under different dirt thicknesses, and the variable frequency operation has significant energy-saving benefits.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic cleaning device for a secondary sedimentation tank outlet weir, comprising a secondary sedimentation tank (1), a scraper bridge (2) and an outlet weir (3) arranged on the secondary sedimentation tank (1), characterized in that: The scraping bridge (2) is provided with a master control module (4), a spray mechanism (6) and a cleaning mechanism (5) electrically connected to the master control module (4); the cleaning mechanism (5) comprises a traveling bracket (51) rollingly mounted in the water outlet weir (3), a scraper (52) arranged at the front side of the traveling direction of the traveling bracket (51), a pair of electric brushes (53) respectively abutting against the side walls of the water outlet weir (3), and a longitudinal adaptive component (58) and a transverse adjustment control component (54) arranged between the traveling bracket (51) and the electric brushes (53); the water outlet of the spray mechanism (6) faces the pair of electric brushes (53); The lateral adjustment control assembly (54) comprises a support plate (541) slidably connected to the traveling support (51), an adjustment screw (542) rotatably connected to the support plate (541), an adjustment nut (543) and a relay (544) provided on the traveling support (51), the adjustment nut (543) being threadedly connected to the adjustment screw (542), the master control module (4) being electrically connected to the relay (544), and the longitudinal adaptive assembly (58) being provided on the support plate (541); The master control module (4) comprises a central bridge (41) arranged on the secondary sedimentation tank (1), a control box (42) and a multi-electrode tubular busbar (43) arranged on the central bridge (41), a fork (44) slidably connected to the central bridge (41), and a tubular current collector (45) arranged on the fork (44) and cooperating with the multi-electrode tubular busbar (43). The control box (42) is electrically connected to the multi-electrode tubular busbar (43), and the tubular current collector (45) is electrically connected to the spray mechanism (6), the electric brush (53) and the lateral adjustment control assembly (54).

2. The automatic cleaning device for the secondary sedimentation tank outlet weir according to claim 1, characterized in that: The lateral adjustment control assembly (54) comprises a support plate (541) slidably connected to the traveling support (51), and an adjustment cylinder (551) and a relay (544) arranged on the traveling support (51); the master control module (4) is electrically connected to the adjustment cylinder (551) and the relay (544); and the longitudinal adaptive assembly (58) is arranged on the support plate (541).

3. The automatic cleaning device for the secondary sedimentation tank outlet weir according to claim 1, characterized in that: The lateral adjustment control component (54) comprises a support plate (541) slidably connected to the traveling support (51), a transmission nut (561) rotatably connected to the support plate (541), and a screw motor (562) and a relay (544) arranged on the traveling support (51); the screw shaft of the screw motor (562) is passed through the support plate (541) and is threadedly connected to the transmission nut (561); the master control module (4) is electrically connected to the screw motor (562) and the relay (544); and the longitudinal adaptive component (58) is arranged on the support plate (541).

4. The automatic cleaning device for the secondary sedimentation tank outlet weir according to claim 1, characterized in that: The lateral adjustment control component (54) comprises a support plate (541) slidably connected to the walking bracket (51), a flexible abutting rod (571) and an elastic electromagnetic component (572) arranged on the support plate (541), and a permanent magnet linear motor (573) and a pressure sensor (574) arranged on the walking bracket (51); the mover of the permanent magnet linear motor (573) is arranged on the end of the elastic electromagnetic component (572); the flexible abutting rod (571) abuts against the detection end of the pressure sensor (574); the main control module (4) is electrically connected to the elastic electromagnetic component (572), the permanent magnet linear motor (573) and the pressure sensor (574); and the longitudinal adaptive component (58) is arranged on the support plate (541).

5. The automatic cleaning device for the secondary sedimentation tank outlet weir according to claim 4, characterized in that: The elastic electromagnetic component (572) includes a linear bearing (5722) with a reader (5721), a sliding sleeve (5724) with a magnetic scale (5723), and a compression spring (5725) which are sequentially sleeved from the inside to the outside. The linear bearing (5722) is arranged on the support plate (541), the sliding sleeve (5724) and the compression spring (5725) are arranged on the mover of the permanent magnet linear motor (573), and the end of the compression spring (5725) is in contact with the support plate (541), and the reader (5721) slides in contact with the magnetic scale (5723).

6. The automatic cleaning device for the secondary sedimentation tank outlet weir according to any one of claims 1 to 5, characterized in that: The electric brush (53) is slidably connected to the support plate (541), and the longitudinal adaptive component (58) includes a plurality of pairs of positioning bolts (581) slidingly penetrated on the support plate (541), and a spring (582) sleeved on the positioning bolts (581), and the two positioning bolts (581) of each pair respectively contact the upper and lower sides of the electric brush (53), and the two ends of the spring (582) are respectively fixed on the support plate (541) and the positioning bolts (581).

7. The automatic cleaning device for the secondary sedimentation tank outlet weir according to claim 6, characterized in that: The spray mechanism (6) comprises a water inlet pipe (61), a submersible sewage pump (62), a water delivery pipe (63) and a pair of spray heads (64) connected in sequence along the water outlet direction, wherein the water outlet directions of the pair of spray heads (64) are respectively directed toward the pair of electric brushes (53).

8. The automatic cleaning device for the secondary sedimentation tank outlet weir according to claim 1, characterized in that: The water outlet of the water outlet weir (3) is provided with a water outlet pipe (7) and a water outlet box (8), the inlet section of the water outlet box (8) is provided with a filter screen (81), and the water outlet end of the water outlet pipe (7) extends above the filter screen (81).

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