Sewage cleaning device for papermaking

Abstract

The invention relates to the technical field of sewage treatment equipment, in particular to a papermaking sewage cleaning device which comprises a pretreatment box, a filter screen plate is arranged at the bottom in the pretreatment box, a positioning groove is formed in the lower surface of the filter screen plate and slidably connected with a positioning rod, the bottom of the positioning rod is fixed to two limiting frames, and the two limiting frames are fixed to the side wall of the pretreatment box. The upper side of the moving frame is connected with a brush plate, and the lower side of the moving frame is connected with a first driving assembly. A soft scraper is fixed to the filter screen plate and fixed to a connecting frame, and the top of the connecting frame is connected with a second driving assembly. Inserting holes are formed in the side walls of the connecting blocks and are in sliding connection with bent rods, and the tops of the bent rods are connected with adjusting assemblies. The double-sided automatic cleaning mechanism enables the filter screen plate to be brushed up and down synchronously, so that blockage is avoided, shutdown cleaning is not needed, and continuity is guaranteed. The filter screen plate can be conveniently replaced by a single person through a quick insertion structure, and the maintenance difficulty is reduced. Impurities are automatically guided and collected, stability and resource recovery are improved, and maintenance cost and downtime are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, in particular to a sewage cleaning device for papermaking. Background Art

[0002] Papermaking wastewater treatment is a critical component of achieving clean production and sustainable development in the papermaking industry. The industry generates large quantities of wastewater with complex compositions during production. Direct discharge without proper treatment can significantly impact the aquatic environment. Therefore, effective treatment of papermaking wastewater to minimize pollutant emissions is crucial. The modern papermaking industry is striving to reduce its environmental footprint by increasing water recycling rates, reducing fresh water use and total wastewater discharge, and incorporating a variety of efficient wastewater treatment technologies. Furthermore, wastewater treatment is not only crucial for environmental protection but also offers significant resource conservation and economic benefits. Specific processes and equipment can be used to recover valuable resources such as fiber and fillers from wastewater, reducing raw material costs, improving final product quality, and ultimately enhancing the market competitiveness of enterprises. Overall, papermaking wastewater treatment is a complex system involving wastewater source analysis, treatment process selection, equipment technology application, and operational optimization. Relying on scientific management measures and advanced treatment equipment and technology can effectively promote the coordinated development of the papermaking industry and ecological and environmental protection.

[0003] In the prior art, in the existing papermaking wastewater treatment technology, pretreatment is widely used as the first step. This step usually uses devices such as grids or screens to intercept and remove large floating objects and suspended impurities carried in the sewage, such as wood chips, plastic fragments, fiber bundles, bark debris, etc. The main purpose of this operation is to protect subsequent treatment units (such as pumps, valves, reactors, etc.) from clogging or wear by large particles, and to ensure the stable and continuous operation of the entire sewage treatment process. At the same time, the fiber material separated in the pretreatment stage has a certain recycling and reuse value after proper treatment, which can bring certain economic benefits. In order to avoid splashing when the sewage is poured into the pretreatment box, it is common practice to set the filtration screen plate on the inside of the pretreatment box near the bottom. In order to fix the screen plate, the usual method is to use fasteners such as bolts or screws to connect and fix its side wall to the inner wall of the pretreatment box.

[0004] However, firstly, since sewage contains a large amount of impurities, the screen plate is very likely to become clogged after a period of continuous operation. If manual cleaning is relied upon, not only is the operation frequency high, consuming a lot of manpower and time, but the cleaning work usually needs to be carried out after the sewage treatment plant has completely stopped operating. This shutdown cleaning method significantly increases the inconvenience of operation and directly leads to a decrease in the overall sewage treatment efficiency. Secondly, papermaking sewage often contains a certain concentration of acid, alkali or other corrosive substances. The screen plate is easily corroded and damaged and fails after being immersed in such sewage for a long time. Since the screen plate is installed in a deep position, the existing technology often lacks convenient special tools to remove it. Therefore, replacing a damaged screen plate usually requires the cooperation of multiple people, first laboriously removing the fasteners, and then removing it from the deep of the box. The whole process is time-consuming and labor-intensive. This not only greatly reduces the efficiency of screen plate installation and disassembly, but also further slows down the overall process of sewage cleaning, increasing maintenance costs and downtime. Summary of the Invention

[0005] The object of the present invention is to provide a papermaking sewage cleaning device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a papermaking wastewater cleaning device, comprising: a pretreatment box, a filter plate provided at the bottom inner side of the pretreatment box, a positioning groove provided on the lower surface of the filter plate, the positioning groove being slidably plugged into the top of a positioning rod, the bottom of the positioning rod being welded and fixed to a limiting frame, the end of the limiting frame being welded and fixed to the side wall of the pretreatment box, and two sets of limiting frames being provided; A movable frame that can move left and right is slidably installed between each group of limit frames, a plurality of brush plates are fixedly installed on the upper side of the movable frame, and a first driving component for driving the movable frame to move left and right is connected to the lower side of the movable frame; A plurality of soft scrapers are provided on the upper surface of the filter plate, and the upper surfaces of the plurality of soft scrapers are fixedly connected to the bottom of the connecting frame. A second driving assembly for driving the connecting frame to move left and right is connected to one side of the top of the connecting frame; A set of connecting blocks are fixedly connected at both ends of the upper surface of the filter plate. The side walls of the connecting blocks are provided with sockets, which are slidably plugged into the bottom of the bent rod. The top of the bent rod is connected to an adjustment component for adjusting the bent rod to be inserted into or pulled out of the socket.

[0007] Preferably, the first drive assembly includes a motor, which is fixedly connected to the outer wall of the pretreatment box, the output end of the motor passes through one side wall of the pretreatment box and is fixedly connected to one end of the drive shaft, the other end of the drive shaft passes through the other side wall of the pretreatment box and is rotatably connected to the pretreatment box, the motor is electrically connected to the external control device, and a driving sprocket is fixedly installed in the middle of the drive shaft.

[0008] Preferably, a driven sprocket is provided on one side of the driving sprocket, and the driving sprocket and the driven sprocket are driven by chain meshing. The driven sprocket is fixedly sleeved in the middle of the driven shaft, and both sides of the driven shaft are rotatably sleeved on one end of the support plate, and the other end of the support plate is fixedly connected to the inner wall of the pretreatment box.

[0009] Preferably, both ends of the driven shaft are rotatably connected to one end of the short rod, the other end of the short rod is rotatably connected to one end of the long rod through a connecting pin, and the other end of the long rod is rotatably connected to the bottom of the movable frame through a fixed pin. The two side walls of the movable frame are rotatably installed with rollers through limit pins, and the rollers are slidably installed in the limit frame.

[0010] Preferably, the second drive assembly includes a lower limit shaft, an upper limit shaft is arranged on the upper side of the lower limit shaft, the lower limit shaft and the upper limit shaft are both rotatably sleeved in the side wall of the pretreatment box, the drive shaft and the lower limit shaft are transmitted through the first meshing belt group, and the lower limit shaft and the upper limit shaft are transmitted through the second meshing belt group.

[0011] Preferably, a gear is fixed on one side of the upper limit shaft, a rack is meshed on the upper side of the gear, one side of the rack is slidably connected to the limit groove opened on the top side of the pretreatment box through a limit bar, and a slot is opened in a linear array on the upper surface of the rack.

[0012] Preferably, the slot is slidably plugged into the bottom of the T-shaped pin, the top of the T-shaped pin is fixedly connected to the stepped hole opened on the upper surface of one side of the top of the connecting frame through a first return spring, and the other side of the top of the connecting frame is slidably connected to the slide rail fixedly connected to the upper surface of the other side of the top of the pretreatment box through the groove opened, and oblique through holes are opened on both side walls of the pretreatment box, and a collection box is provided on the lower side of the oblique through holes, and the collection box and the pretreatment box are detachably connected by bolts.

[0013] Preferably, the adjustment assembly includes a gear rod, which is fixedly connected to the lower side of the gear rod at the top of the bent rod, and the upper side of the gear rod is engaged with one side of the semi-toothed plate for transmission. The semi-toothed plate is rotatably connected to the limit plate through a long pin shaft, and the other side of the semi-toothed plate is rotatably connected to one end of the transmission plate through a short pin shaft. The gear rod is symmetrically arranged inside the limit plate.

[0014] Preferably, the other end of the transmission plate is rotatably connected to one end of the connecting plate through a short pin shaft, the gear rod is slidably connected to the protrusion fixedly arranged inside the limit plate, the middle part of the connecting plate is fixedly connected to one end of the plug column, and the other end of the plug column is fixedly connected to the bottom of the connecting rod through a limit bearing, and a second return spring is fixedly connected between the connecting plate and the limit plate Preferably, a limit plate is provided on the upper side of the second return spring, and the limit plate has a hollow structure. One side of the limit plate is fixedly connected to the top of the limit plate, and an arc-shaped through hole is provided on the other side of the limit plate. The bottom end of the connecting rod slides through the limit plate and the top of the limit plate in sequence, and the outer ring surface of the bottom of the connecting rod is fixedly connected with an arc-shaped piece that is adapted to the arc-shaped through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By arranging a brush plate controlled by the first drive assembly to reciprocate across the lower surface of the filter plate, and a soft scraper controlled by the second drive assembly to simultaneously clean the upper surface of the filter plate, the two-sided synergy can effectively remove impurities that clog the filter holes. This design completely eliminates the tedious manual cleaning operations required by traditional shutdowns, ensures continuous sewage treatment operation, and effectively solves the problem of reduced efficiency caused by filter blockage.

[0016] 2. The adjustment assembly (including the bent rod and gear rod) plugs into the connecting block, allowing a single person to quickly lock or release the bent rod and filter plate. This mechanism replaces the multiple-person disassembly steps required for traditional bolt fasteners. Even when the filter plate is deep within the housing, it can be easily removed and replaced, significantly reducing maintenance time and labor.

[0017] 3. Automatically cleaned impurities are directed through oblique holes into a removable collection box for centralized recovery of fiber and other resources. Furthermore, the filter plate's double-sided anti-clogging design, combined with its easy replacement function, fundamentally reduces equipment downtime. These two factors work together to ensure continuous and efficient operation of the pretreatment process, improving wastewater treatment efficiency while enhancing the economic benefits of resource reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic top view of the overall structure of the present invention; Figure 3 It is a bottom view schematic diagram of the overall structure of the present invention; Figure 4 Schematic diagram of the internal structure of the present invention; Figure 5 It is a bottom view schematic diagram of the internal structure of the present invention; Figure 6 It is a top view schematic diagram of the internal structure of the present invention; Figure 7 For the present invention Figure 4 A schematic diagram of the structure at center A; Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle; In the figure: 1, pre-treatment box; 2, filter plate; 3, positioning groove; 4, positioning rod; 5, limit frame; 6, movable frame; 7, brush plate; 8, soft scraper; 9, connecting frame; 10, connecting block; 11, socket; 12, bending rod; 13, motor; 14, driving shaft; 15, driving sprocket; 16, driven sprocket; 17, chain; 18, driven shaft; 19, support plate; 20, short rod; 21, long rod; 22, roller; 23, lower limit shaft; 24, upper limit shaft; 2 5. Gear; 26. Rack; 27. Limiting bar; 28. Limiting groove; 29. ​​Slot; 30. T-shaped latch; 31. First return spring; 32. Stepped hole; 33. Groove; 34. Slide rail; 35. Gear rod; 36. Half-tooth plate; 37. Limiting plate; 38. Transmission plate; 39. Connecting plate; 40. Column; 41. Connecting rod; 42. Second return spring; 43. Limiting plate; 44. Arc-shaped through hole; 45. Arc-shaped sheet; 46. Oblique through hole; 47. Collection box. DETAILED DESCRIPTION

[0019] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-8The present invention provides a technical solution: a papermaking sewage cleaning device, comprising: a pretreatment box 1, which is mounted on the top of the treatment water tank when in use, and is fixed and limited between the pretreatment box 1 and the treatment water tank by fasteners such as bolts, so as to ensure the stability of subsequent use. A filter plate 2 is provided at the bottom of the inner side of the pretreatment box 1. The filter plate 2 is used to filter impurities in the sewage, so as to avoid affecting the sewage treatment. A positioning groove 3 is provided on the lower surface of the filter plate 2. The positioning groove 3 is slidably plugged into the top of the positioning rod 4. The bottom of the positioning rod 4 is welded and fixed to the limit frame 5. The end of the limit frame 5 is welded to the side wall of the pretreatment box 1. The filter plate 2 is positioned and fixed by fixing the limit frame 5 to the inner wall of the pretreatment box 1 and then slidingly plugging the positioning rod 4 between the positioning grooves 3. The limit frame 5 is provided with two groups, and each group of limit frames 5 is provided with two. A movable frame 6 that can move left and right is slidably installed between each group of limit frames 5. A number of brush plates 7 are fixedly installed on the upper side of the movable frame 6. The lower side of the movable frame 6 is connected to a first driving component for driving the movable frame 6 to move left and right. The movable frame 6 is driven by the first driving component to move left and right under the limit of the limit frame 5, so that the movable frame 6 drives the brush plate synchronously. 7 movement, the brush plate 7 reciprocates on the lower surface of the filter plate 2, and then cleans the filter holes of the filter plate 2 to avoid clogging during use, so there is no need to stop the machine for processing, which improves the processing efficiency. A number of soft scrapers 8 are provided on the upper surface of the filter plate 2. The upper surfaces of the soft scrapers 8 are fixedly connected to the bottom of the connecting frame 9. A second driving component for driving the connecting frame 9 to move left and right is connected to one side of the top of the connecting frame 9. The second driving component is driven by the connecting frame 9 to drive the soft scraper 8 to reciprocate on the upper surface of the filter plate 2, thereby cleaning the filtered impurities to both sides, further avoiding clogging of the mesh holes of the filter plate 2. To reduce the trouble of manual cleaning, a group of connecting blocks 10 are fixedly connected to both ends of the upper surface of the filter plate 2, and a socket 11 is provided on the side wall of the connecting block 10. The socket 11 is slidably plugged into the bottom of the bent rod 12, and the top of the bent rod 12 is connected to an adjustment component for adjusting the bent rod 12 to insert or pull out the socket 11. When the filter plate 2 needs to be taken out after long-term use, the soft scraper 8 and the connecting frame 9 are taken out first, and then the bent rod 12 is inserted into the socket 11 by adjusting the operation of the adjustment component, so that the operator can easily take out the filter plate 2 by pulling the bent rod 12, saving time and effort and reducing maintenance costs.

[0021] Embodiment 2: On the basis of embodiment 1, the first driving component includes a motor 13, the motor 13 is fixedly connected to the outer wall of the pretreatment box 1, the output end of the motor 13 passes through one side wall of the pretreatment box 1 and is fixedly connected to one end of the driving shaft 14, the other end of the driving shaft 14 passes through the other side wall of the pretreatment box 1 and is rotatably connected to the pretreatment box 1, and the driving shaft 14 is limited by the pretreatment box 1 to ensure its stability during rotation, the motor 13 is electrically connected to an external control device, and the external control device controls the motor 13 to alternately rotate forward and reverse, so that the motor 13 drives the driving shaft 14 to alternately rotate forward and reverse, a driving sprocket 15 is fixedly installed in the middle of the driving shaft 14, and a driven sprocket 16 is provided on one side of the driving sprocket 15, and the driving sprocket 15 and the driven sprocket 16 are meshed with each other through a chain 17, and the driven sprocket 16 is fixedly sleeved on the driven sprocket. In the middle of the driving shaft 18, both sides of the driven shaft 18 are rotatably sleeved on one end of the support plate 19, and the other end of the support plate 19 is fixedly connected to the inner wall of the pretreatment box 1. The support plates 19 are symmetrically arranged about the central plane of the driven shaft 18. The driven shaft 18 is limited and supported by the support plates 19, thereby improving its stability during rotation. Both ends of the driven shaft 18 are rotatably connected to one end of the short rod 20, and the other end of the short rod 20 is rotatably connected to one end of the long rod 21 through a connecting pin, and the other end of the long rod 21 is rotatably connected to the bottom of the movable frame 6 through a fixed pin. The two side walls of the movable frame 6 are rotatably installed with rollers 22 through limit pins, and the limit pins are fixedly connected to the side walls of the movable frame 6. The rollers 22 are rotatably sleeved on the limit pins, and the rollers 22 are slidably installed in the limit frame 5. The limit frame 5 is used to limit the sliding of the rollers 22, thereby improving the stability of the movable frame 6 during movement.

[0022] After the pretreatment box 1 and the treatment water tank are erected and fixed in position, the motor 13 is started by the controller, and the motor 13 rotates alternately forward and reverse according to the preset program, that is, when the soft scraper 8 moves to the position of the connecting block 10, the motor 13 rotates in the opposite direction, and the motor 13 drives the drive shaft 14 to rotate alternately forward and reverse. When the drive shaft 14 rotates, it will first drive the active sprocket 15 fixed in the middle to rotate, and the active sprocket 15 drives the driven sprocket 16 to rotate through the engagement of the chain 17, so that the active sprocket 15 and the driven sprocket 16 can be realized. The synchronous forward and reverse rotation of the active sprocket 15 and the driven sprocket 16 can be realized. When the driven sprocket 16 rotates, it will drive the driven shaft 18 to rotate under the limit of the support plate 19, so that the driven shaft 18 drives the short rod 20 fixed at both ends to move in a circle. The short rod 20 pulls one end of the long rod 21 for circular motion under the connection of the connecting pin, and the other end of the long rod 21 is connected to the limit of the fixed pin to pull the movable frame 6 to move, and the movable frame 6 slides in the limit frame 5 through the rollers 22 rotatably installed on both sides thereof, thereby making the movable frame 6 realize left and right reciprocating motion, and then the movable frame 6 drives the lower surface of the filter plate 2 under the several brush plates 7 fixedly installed on its upper surface to reciprocate, so as to clean the mesh of the filter plate 2, avoid impurities in the dumped sewage from being blocked in the mesh, affecting the subsequent filtration pretreatment, and also avoid the trouble of relying on manual cleaning, saving time and labor, and no need to stop the machine for processing during the cleaning process, thereby improving the subsequent sewage treatment efficiency and thus improving convenience.

[0023] The second drive assembly includes a lower limit shaft 23, and an upper limit shaft 24 is provided on the upper side of the lower limit shaft 23. The lower limit shaft 23 and the upper limit shaft 24 are both rotatably sleeved in the side wall of the pretreatment box 1, and the upper limit shaft 24 and the lower limit shaft 23 are limited by the pretreatment box 1, thereby improving their stability during rotation. The driving shaft 14 and the lower limit shaft 23 are transmitted through the first meshing belt group, and the lower limit shaft 23 and the upper limit shaft 24 are transmitted through the second meshing belt group. The active meshing wheel of the first meshing belt group is fixedly sleeved on the end of the driving shaft 14 away from the motor 13, and the driven meshing wheel of the first meshing belt assembly is fixedly sleeved on the lower limit shaft 23, thereby transmitting through the meshing belt, the active meshing wheel of the second meshing belt group is fixedly sleeved on the lower limit shaft 23, and the driven meshing wheel of the second meshing belt group is fixedly sleeved on the upper limit shaft 24, thereby transmitting through the meshing belt, and one side of the upper limit shaft 24 is fixed The fixed sleeve is provided with a gear 25, and a rack 26 is meshed with the upper side of the gear 25. The gear 25 and the rack 26 are meshed for transmission. One side of the rack 26 is slidably connected to the limit groove 28 opened on the top side of the pretreatment box 1 through a limit bar 27, thereby improving the stability of the rack 26 during movement. A slot 29 is opened in a linear array on the upper surface of the rack 26, and the slot 29 is slidably plugged into the bottom of the T-shaped latch 30. The top of the T-shaped latch 30 is fixedly connected to the stepped hole 32 opened on the upper surface of one side of the top of the connecting frame 9 through a first return spring 31. The other side of the top of the connecting frame 9 is slidably connected to the slide rail 34 fixedly connected to the upper surface of the other side of the top of the pretreatment box 1 through the groove 33 opened, thereby improving the stability of the connecting frame 9 during movement. Oblique through holes 46 are opened on both side walls of the pretreatment box 1, and a collection box 47 is provided on the lower side of the oblique through hole 46. The collection box 47 is detachably connected to the pretreatment box 1 by bolts, thereby facilitating the collection of filtered impurities.

[0024] When the control motor 13 rotates forward and reverse alternately, it will drive the drive shaft 14 to move synchronously. The drive shaft 14 drives the upper limit shaft 24 to rotate forward and reverse alternately through the cooperation of the first meshing belt group, the lower limit shaft 23, and the second meshing belt group, so that the upper limit shaft 24 drives the gear 25 to rotate forward and reverse. The gear 25 drives the rack 26 to move synchronously through the engagement with the rack 26. The rack 26 slides back and forth on the top of the pretreatment box 1 under the cooperation of the limit bar 27 and the limit groove 28. The cooperation of the T-shaped latch 30, the first return spring 31, and the stepped hole 32 enables the T-shaped latch 30 to be stably inserted into the slot 29 opened on the top side of the connecting frame 9. Then the rack 26 synchronously drives the connecting frame 9 to reciprocate synchronously, and the other side of the top of the connecting frame 9 slides in cooperation with the groove 33 and the slide rail 34, ensuring the stability of the connecting frame 9 during the sliding process, and then the connecting frame 9 drives several soft scrapers 8 fixedly installed at its bottom to clean the impurities filtered out of the upper surface of the filter plate 2. Under the reciprocating motion of the soft scraper 8, the impurities move to both sides of the filter plate 2, and finally slowly pass through the inclined through hole 46 and fall into the collection box 47, thereby reducing the difficulty of subsequent manual collection, further avoiding the blockage of the filter plate 2 by impurities, and further improving the efficiency and effect of sewage treatment.

[0025] The fourth embodiment, on the basis of the third embodiment, the adjustment component includes a gear rod 35, the lower side of the gear rod 35 at the top of the bent rod 12 is fixedly connected, the upper side of the gear rod 35 is meshed with one side of the half toothed plate 36 for transmission, the half toothed plate 36 is rotatably connected to the limit plate 37 through a long pin shaft, the long pin shaft is fixedly sleeved in the half toothed plate 36, and the other side of the half toothed plate 36 is rotatably connected to one end of the transmission plate 38 through a short pin shaft, the gear rod 35 is symmetrically arranged inside the limit plate 37, the other end of the transmission plate 38 is rotatably connected to one end of the connecting plate 39 through a short pin shaft, the gear rod 35 is slidably connected to the protrusion fixedly provided inside the limit plate 37, thereby limiting the gear rod 35, the middle part of the connecting plate 39 is fixedly connected to one end of the plug post 40, and the other end of the plug post 40 is connected to the connecting rod through a limit bearing. The bottom of 41 is fixedly connected, and the limit bearing adopts an installation method in which the inner ring rotates and the outer ring is fixed. A second return spring 42 is fixedly connected between the connecting plate 39 and the limit plate 37. The second return spring 42 facilitates the resetting of the connecting plate 39. A limit disk 43 is arranged on the upper side of the second return spring 42. The limit disk 43 is a hollow structure. One side of the limit disk 43 is fixedly connected to the top of the limit plate 37, and an arc-shaped through hole 44 is provided on the other side of the limit disk 43. The bottom end of the connecting rod 41 slides through the limit disk 43 and the top of the limit plate 37 in sequence. The outer ring surface of the bottom of the connecting rod 41 is fixedly connected with an arc-shaped piece 45 adapted to the arc-shaped through hole 44. The arc-shaped piece 45 is slidably connected to the arc-shaped through hole 44. The thickness of the arc-shaped piece 45 is consistent with the thickness of the hollow layer inside the limit disk 43.

[0026] When the filter plate 2 is corroded or damaged after being used for a period of time, the filter plate 2 needs to be taken out and replaced. First, the limit plate 37 is placed into the pretreatment box 1 by holding the connecting rod 41, and the limit plate 37 is abutted against the upper surface of the connecting block 10. At the same time, the two bent rods 12 are between the two connecting blocks 10, and the arc-shaped through hole 44 and the arc-shaped piece 45 are in the same position in the vertical direction. At this time, the connecting rod 41 can be pressed downward. Under the limit connection of the limit bearing, the connecting rod 41 slides downward in the limit plate 37 and the limit plate 43, and the arc-shaped piece 45 approaches the arc-shaped through hole 44. The connecting rod 41 will drive the plug The column 40 moves downward, and the plug column 40 presses the connecting plate 39 downward. The second return spring 42 is stretched, and the two ends of the connecting plate 39 cooperate with the rotation of the transmission plate 38 through the short pin, so that the transmission plate 38 pulls the half-toothed plate 36 to move. The half-toothed plate 36 rotates under the limit of the long pin, and the half-toothed plate 36 engages with the gear rod 35. The gear rod 35 slides under the limit of the protrusion of the limit plate 37, and finally the two gear rods 35 drive the two bent rods 12 to move backward until the bent rod 12 is inserted into the insertion hole 11. At this time, the arc piece 45 just slides completely into the limit plate 43, and then the connecting rod 41 is rotated to make the connecting rod 41 drive the two bent rods 12 to move backward. The arc piece 45 is rotated, and the arc piece 45 is rotated to a different position from the arc through hole 44, and then the arc piece 45 is limited, and then the plug column 40 is limited, and finally the bending rod 12 is limited, so that the bending rod 12 is stably inserted in the connecting block 10, and then the T-shaped latch 30 is pulled upward to release the limit between the connecting frame 9 and the rack 26, and the connecting frame 9 can be lifted upward to remove the connecting frame 9, and then the filter plate 2 can be lifted and removed by pulling the connecting rod 41 upward, and the connecting rod 41 is rotated again to make the arc piece 45 and the arc through hole 44 in the same position. At this time, the arc piece 45 is no longer limited. When the filter plate 2 is in the same position as the filter plate 2, the two bent rods 12 can be indirectly moved backwards by the reverse elastic force of the second return spring 42, and slide out of the socket 11 provided in the connecting block 10, thereby releasing the limit between the bent rod 12 and the filter plate 2, so that the filter plate 2 can be subsequently replaced or maintained, thereby avoiding the problem that the filter plate 2 is installed in a deep position and there is a lack of convenient special tools to remove it. Replacing a damaged filter plate 2 usually requires the cooperation of multiple people, first laboriously disassembling the fasteners, and then removing it from the depth of the pretreatment box 1. The whole process is time-consuming and labor-intensive, and further slows down the overall process of sewage cleaning, increasing maintenance costs and downtime.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A papermaking wastewater cleaning device, comprising a pretreatment tank (1), characterized in that: A filter plate (2) is provided at the bottom inner side of the pretreatment box (1), a positioning groove (3) is provided on the lower surface of the filter plate (2), the positioning groove (3) is slidably plugged into the top of the positioning rod (4), the bottom of the positioning rod (4) is welded and fixed to the limit frame (5), the end of the limit frame (5) is welded and fixed to the side wall of the pretreatment box (1), and two groups of limit frames (5) are provided; A movable frame (6) that can move left and right is slidably installed between each group of limit frames (5), a plurality of brush plates (7) are fixedly installed on the upper side of the movable frame (6), and a first driving component for driving the movable frame (6) to move left and right is connected to the lower side of the movable frame (6); A plurality of soft scrapers (8) are provided on the upper surface of the filter plate (2), the upper surfaces of the plurality of soft scrapers (8) are fixedly connected to the bottom of the connecting frame (9), and a second driving component for driving the connecting frame (9) to move left and right is connected to one side of the top of the connecting frame (9); A set of connecting blocks (10) are fixedly connected to both ends of the upper surface of the filter plate (2), and a socket (11) is provided on the side wall of the connecting block (10). The socket (11) is slidably plugged into the bottom of the bent rod (12), and an adjustment component for adjusting the bent rod (12) to be inserted into or removed from the socket (11) is connected to the top of the bent rod (12).

2. The papermaking wastewater cleaning device according to claim 1, characterized in that: The first driving assembly includes a motor (13), the motor (13) is fixedly connected to the outer wall of the pretreatment box (1), the output end of the motor (13) passes through one side wall of the pretreatment box (1) and is fixedly connected to one end of a driving shaft (14), the other end of the driving shaft (14) passes through the other side wall of the pretreatment box (1) and is rotatably connected to the pretreatment box (1), the motor (13) is electrically connected to an external control device, and a driving sprocket (15) is fixedly installed in the middle of the driving shaft (14).

3. The papermaking wastewater cleaning device according to claim 2, characterized in that: A driven sprocket (16) is provided on one side of the driving sprocket (15), and the driving sprocket (15) and the driven sprocket (16) are meshed and driven by a chain (17). The driven sprocket (16) is fixedly sleeved on the middle of the driven shaft (18), and both sides of the driven shaft (18) are rotatably sleeved on one end of a support plate (19), and the other end of the support plate (19) is fixedly connected to the inner wall of the pretreatment box (1).

4. The papermaking wastewater cleaning device according to claim 3, characterized in that: Both ends of the driven shaft (18) are rotatably connected to one end of the short rod (20), the other end of the short rod (20) is rotatably connected to one end of the long rod (21) through a connecting pin, and the other end of the long rod (21) is rotatably connected to the bottom of the movable frame (6) through a fixed pin. The two side walls of the movable frame (6) are rotatably mounted with rollers (22) through limit pins, and the rollers (22) are slidably mounted in the limit frame (5).

5. The papermaking wastewater cleaning device according to claim 1, characterized in that: The second driving assembly comprises a lower limit shaft (23), an upper limit shaft (24) is provided on the upper side of the lower limit shaft (23), the lower limit shaft (23) and the upper limit shaft (24) are both rotatably sleeved in the side wall of the pretreatment box (1), the driving shaft (14) and the lower limit shaft (23) are driven by a first meshing belt group, and the lower limit shaft (23) and the upper limit shaft (24) are driven by a second meshing belt group.

6. The papermaking wastewater cleaning device according to claim 5, characterized in that: A gear (25) is fixedly sleeved on one side of the upper limit shaft (24), a rack (26) is meshed on the upper side of the gear (25), one side of the rack (26) is slidably connected to a limit groove (28) opened on one side of the top of the pretreatment box (1) through a limit bar (27), and a slot (29) is opened in a linear array on the upper surface of the rack (26).

7. The papermaking wastewater cleaning device according to claim 6, characterized in that: The slot (29) is slidably plugged into the bottom of the T-shaped latch (30), and the top of the T-shaped latch (30) is fixedly connected to a stepped hole (32) provided on the upper surface of one side of the top of the connecting frame (9) through a first return spring (31). The other side of the top of the connecting frame (9) is slidably connected to a slide rail (34) fixedly connected to the upper surface of the other side of the top of the pretreatment box (1) through a groove (33). Oblique through holes (46) are provided on both side walls of the pretreatment box (1), and a collection box (47) is provided on the lower side of the oblique through hole (46). The collection box (47) and the pretreatment box (1) are detachably connected by bolts.

8. The papermaking wastewater cleaning device according to claim 1, characterized in that: The adjustment assembly includes a gear rod (35), the lower side of the gear rod (35) at the top of the bent rod (12) is fixedly connected, the upper side of the gear rod (35) is meshed with one side of the semi-toothed plate (36) for transmission, the semi-toothed plate (36) is rotatably connected to the limit plate (37) through a long pin shaft, and the other side of the semi-toothed plate (36) is rotatably connected to one end of the transmission plate (38) through a short pin shaft, and the gear rod (35) is symmetrically arranged inside the limit plate (37).

9. The papermaking wastewater cleaning device according to claim 8, characterized in that: The other end of the transmission plate (38) is rotatably connected to one end of the connecting plate (39) through a short pin shaft, the gear rod (35) is slidably connected to a protrusion fixedly arranged inside the limit plate (37), the middle of the connecting plate (39) is fixedly connected to one end of the plug column (40), and the other end of the plug column (40) is fixedly connected to the bottom of the connecting rod (41) through a limit bearing, and a second return spring (42) is fixedly connected between the connecting plate (39) and the limit plate (37).

10. The papermaking wastewater cleaning device according to claim 9, characterized in that: A limit plate (43) is provided on the upper side of the second return spring (42). The limit plate (43) is hollow in structure. One side of the limit plate (43) is fixedly connected to the top of the limit plate (37). An arc-shaped through hole (44) is provided on the other side of the limit plate (43). The bottom end of the connecting rod (41) slides through the limit plate (43) and the top of the limit plate (37) in sequence. The outer ring surface of the bottom of the connecting rod (41) is fixedly connected to an arc-shaped piece (45) adapted to the arc-shaped through hole (44).

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