A screen decontamination machine for sewage treatment

Abstract

The present invention relates to the technical field of sewage treatment, and discloses a screen decontamination machine for sewage treatment, comprising a main frame, wherein a screen chain and a driving system are arranged inside the main frame, the screen chain comprises two groups of first chain plates and second chain plates that are alternately hinged in a ring shape, a separator plate is fixedly connected between the two side ends of the two groups of first chain plates, and the middle parts of the first chain plates and the second chain plates are rotatably connected to a supporting plate; by arranging a cleaning block and a movably connected supporting plate, the supporting plate can be rotated toward a vertical state, thereby facilitating the separation of pollutants and avoiding the accumulation of pollutants in the inclined screen, and at the same time, the supporting plate in a vertical state facilitates the cleaning block to move up and down for cleaning, further improving the cleaning effect of the supporting plate and the separator plate, reducing the difficulty of cleaning the supporting plate and the separator plate, and effectively ensuring the separation effect of the screen chain and the pollutants.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a screen decontamination machine for sewage treatment. Background Art

[0002] Grid decontamination machines are used to remove waste from flowing sewage. Rotating rakes remove waste from the water flow and then separate it, achieving continuous waste removal. Because the rakes intercept and remove pollutants from the sewage, incomplete separation between the rakes and the pollutants often occurs, leading to the rake chain clinging to large amounts of pollutants, reducing the overall decontamination efficiency of the grid decontamination machine.

[0003] In the Chinese patent publication number CN117003313A, a tooth rake type screen decontamination machine for sewage treatment that is easy to maintain without stopping the machine is disclosed, including a frame, a power mechanism, a safety maintenance device, a rotating chain mechanism, an anti-backlog mechanism, a rake tooth screen rod and a rake tooth cleaning mechanism; the rake tooth cleaning mechanism includes a transmission component II, a cleaning brush, a positioning plate, a rotating gear, a fixed block, a sliding block, a limit block and a return spring IV; the cleaning brush is parallel to the rake tooth screen rod and is arranged at the bottom end of the horizontal upper part of the frame; a connecting plate is fixedly installed at each end of the cleaning brush, a rack is fixedly installed on the connecting plate, and the connecting plate is slidably installed on the frame.

[0004] By setting up a rake tooth cleaning mechanism, the rake teeth are brushed with the cleaning brush and rake tooth grille that rotate against each other. Although the rake tooth cleaning system can be achieved, during the continuous working process, the cleaning brush will be entangled with a large amount of pollutants. Therefore, after working for a long time, the overall cleaning effect of the rake teeth is reduced, and the cleaning brush is easily stuck due to the adhesion of a large amount of pollutants. At the same time, by setting up rake teeth that can be disengaged from the limit, the rake teeth are limited by the card plate and the limit block, and then the limit plate acts on the slide rod to control the rake teeth to be forced out of the limit, and the rake teeth limit recovery is achieved through the reset spring four. The slide rod is easily disturbed by pollutants during the cleaning process, which leads to the stability of the rake teeth disengaging from the limit, while the reset limit process is unstable, which in turn affects the stability of the rake teeth cleaning and causes the rake teeth cleaning to be reduced. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a screen decontamination machine for sewage treatment, which has the advantages of good separation effect between rake teeth and pollutants and stable rake tooth structure during the decontamination process.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A screen decontamination machine for sewage treatment, comprising a main frame, a screen chain and a drive system disposed within the main frame, the screen chain comprising two sets of first and second chain plates alternately hinged in an annular shape, a material separator plate fixedly connected between the ends of the two sets of first chain plates, and a material support plate rotatably connected to the middle portions of the first and second chain plates;

[0008] An upper pressing rod and a lower pressing rod are fixedly connected to the interior of the main frame, and the upper pressing rod and the lower pressing rod are pressed against the top of the upper supporting plate and the lower supporting plate respectively;

[0009] A discharge mechanism for assisting in the removal of impurities is provided inside the main frame;

[0010] The unloading mechanism includes a cleaning block for brushing the outside of the supporting plate;

[0011] A cleaning drive is provided on the outside of the cleaning block.

[0012] Preferably: the drive system is used to support and drive the grating chain, the drive system includes at least one driving shaft and two driven shafts, a transmission assembly for transmission connection is provided between the driving shaft and the driven shaft, both side ends of the driving shaft and the driven shaft are fixedly connected with driving wheels, the driving wheels are engaged with the grating chain in the inclined state of the support plate, the driving wheels are used to drive the grating chain to circulate inside the main frame, and also include an underwater guide wheel assembly rotatably connected to the underwater end of the main frame, and a transition guide wheel assembly for supporting the grating chain.

[0013] Preferably: the grating chain includes a unloading section and a loading section, the loading section and the unloading section are connected end to end, the loading section is arranged at an angle, the bottom of the loading section is placed underwater, the unloading section is arranged inside the main frame, the unloading section includes any one driven shaft and transition guide wheel assembly to construct the horizontal section of the grating chain, the unloading mechanism is arranged above the horizontal section of the grating chain, the unloading section also includes a vertical section, the horizontal section and the vertical section are connected end to end.

[0014] Preferably: the underwater guide wheel assembly includes a driving wheel engaged with the grid chain, the upper pressure rod and the lower pressure rod are used to drive the support plate to tilt and deflect, driving the support plate and the partition plates on both sides to form a "Z" shape, the tail ends of the upper pressure rod and the lower pressure rod are adapted to the underwater guide wheel assembly, and the length of the upper pressure rod is adapted to the length of the unloading section.

[0015] Preferably: the unloading mechanism also includes an internal fixing frame fixedly connected to the inside of the main frame, the bottom of the internal fixing frame is fixedly connected to a support guide rod, the cleaning block is slidably connected to the outside of the support guide rod, a reset spring is provided between the cleaning block and the internal fixing frame, the cleaning drive includes a driving shaft rotatably connected to the inside of the internal fixing frame, the outside of the driving shaft is fixedly connected to a driving cam, a bevel gear set is provided at the end of the driving shaft, and the driving shaft is connected to the output shaft through the bevel gear set.

[0016] Preferably, the cleaning blocks and the driving cams are provided in several groups, the cleaning blocks and the driving cams cooperate with each other, any adjacent driving cams are deflected and dislocated by half a circle, and the driving cams are used to drive the cleaning blocks to move up and down outside the support guide rod.

[0017] Preferably, a long brush plate and a short brush plate are fixedly connected to the bottom of the cleaning block, the positions of the long brush plate and the short brush plate are adapted to the deflection direction of the supporting plate, and the long brush plate and the short brush plate are used to be plugged and movable on both sides of the supporting plate.

[0018] Preferably: a movable cavity is opened inside the cleaning block, two sets of connecting tubes are fixedly connected inside the movable cavity, the outside of the connecting tubes is slidably connected to an inner plug plate, a vent is opened on the top of the connecting tube, the bottom of the two sets of connecting tubes are respectively connected to the long brush plate and the short brush plate, and the inner plug plate is fixedly connected to the bottom of the support guide rod.

[0019] Preferably: the internal sliding connection of the partition plate is with a movable tooth plate, the top of the movable tooth plate is fixedly connected with telescopic rake teeth, the telescopic rake teeth pass through the partition plate, a return tooth spring is arranged between the movable tooth plate and the partition plate, the end of the support plate is fixedly connected with a push plate, and the push plate is used to push the movable tooth plate to move.

[0020] Beneficial effects of the present invention:

[0021] 1. The screen cleaner for sewage treatment is equipped with a cleaning block and a movably connected supporting plate, so that the supporting plate can rotate toward a vertical state, thereby facilitating the separation of pollutants and avoiding the accumulation of pollutants in the inclined screen. At the same time, the vertical supporting plate facilitates the up and down movement of the cleaning block for cleaning, further improving the cleaning effect of the supporting plate and the separator plate, reducing the difficulty of cleaning the supporting plate and the separator plate, and effectively ensuring the separation effect of the grid chain and the pollutants.

[0022] 2. The sewage treatment screen decontamination machine ensures the limit stability of the screen chain during the decontamination process through the upper pressure rod, thereby ensuring the stability of the screen chain decontamination process. The overall structure is simple and has strong anti-pollutant interference ability, which is convenient for ensuring the stability and decontamination effect of the screen chain.

[0023] 3. The sewage treatment screen cleaner pushes the long brush plate and the short brush plate to brush the supporting plate and the partition plate through the cleaning block to complete the cleaning of the screen chain, ensure the overall unloading effect of the screen chain, effectively avoid the adhesion and accumulation of pollutants on the screen chain, and avoid the interference of accumulated pollutants with the interception and retrieval effect of pollutants in the sewage, thereby ensuring the decontamination effect of the device and the stability of the decontamination process. In addition, multiple groups of parallel cleaning blocks are set to further improve the cleaning effect of the screen chain, reduce the impact of pollutants adhering to the long brush plate and the short brush plate, and thus reduce the frequency of maintenance required for the device, which is convenient for long-term sewage decontamination work.

[0024] 4. The screen cleaner for sewage treatment sets an inner plug plate inside the movable chamber, so that the compressed air of the inner plug plate enters the connecting pipe, and then is sprayed out through both sides of the long brush plate and the short brush plate. The sprayed gas further assists in cleaning the supporting plate and the partition plate. The sprayed gas further prevents the pollutants from sticking to the long brush plate and the short brush plate, and assists in cleaning the long brush plate and the short brush plate, thereby improving the use effect and effective working time of the long brush plate and the short brush plate, and ensuring the stability and effectiveness of the long brush plate and the short brush plate in cleaning the screen chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main body of the device of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection between the grid chain and the unloading mechanism of the present invention;

[0027] Figure 3 This is a schematic diagram of the grid chain installation configuration of the present invention;

[0028] Figure 4 Schematic diagram of the unloading mechanism and driving system of the present invention;

[0029] Figure 5 Schematic diagram of the first chain plate and the second chain plate of the present invention;

[0030] Figure 6 This is a schematic diagram of the connection between the supporting plate, the spacer plate, the movable tooth plate and the telescopic rake teeth of the present invention;

[0031] Figure 7 This is a schematic diagram of the connection between a single cleaning block, a driving cam and a return spring of the present invention;

[0032] Figure 8 This is a schematic diagram of the connection between the internal active cavity, connecting pipe and inner plug plate of the cleaning block of the present invention.

[0033] In the figure: 1. Main frame; 2. Grid chain; 3. Drive system; 4. Upper pressure rod; 5. Lower pressure rod; 6. Discharge mechanism;

[0034] 21. First chain plate; 22. Second chain plate; 23. Spacer plate; 24. Support plate; 231. Movable tooth plate; 232. Return tooth spring; 233. Telescopic rake teeth; 241. Push plate;

[0035] 31. Driving shaft; 32. Driven shaft; 33. Driving wheel; 34. Transmission assembly; 35. Underwater guide wheel assembly; 36. Transition guide wheel assembly;

[0036] 61. Internal fixing frame; 62. Support guide rod; 63. Cleaning block; 64. Return spring; 65. Cleaning drive; 651. Drive shaft; 652. Drive cam; 66. Bevel gear set; 67. Output shaft;

[0037] 631. Long brush plate; 632. Short brush plate; 633. Movable cavity; 634. Connecting pipe; 635. Inner plug plate. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Example 1

[0040] See also Figure 1 - Figure 8 A screen decontamination machine for sewage treatment includes a main frame 1, a screen chain 2 and a drive system 3 are provided inside the main frame 1, the screen chain 2 includes two groups of first chain plates 21 and second chain plates 22 that are alternately hinged in an annular shape, a material separator 23 is fixedly connected between the ends of the two groups of first chain plates 21, and a material support plate 24 is rotatably connected to the middle of the first chain plates 21 and the second chain plates 22;

[0041] An upper pressing rod 4 and a lower pressing rod 5 are fixedly connected to the interior of the main frame 1, and the upper pressing rod 4 and the lower pressing rod 5 are pressed against the top of the upper supporting plate 24 and the top of the lower supporting plate 24 respectively;

[0042] A discharge mechanism 6 for assisting in the removal of impurities is provided inside the main frame 1;

[0043] The unloading mechanism 6 includes a cleaning block 63 for brushing the outside of the supporting plate 24;

[0044] A cleaning drive 65 is provided outside the cleaning block 63 .

[0045] During the decontamination process, the device is installed in a flowing sewage area. The main frame 1 includes a decontamination part extending underwater, and a part for separating pollutants above the water from the grid chain 2. A pollutant conveying device is also provided for conveying the separated pollutants to the recovery area.

[0046] During the working process, the driving system 3 drives the grid chain 2 to circulate inside the main frame 1, intercepts and removes pollutants in the water through the grid chain 2, and separates the pollutants from the grid chain 2 in the water part of the main frame 1. At the same time, the cleaning block 63 assists in separating the pollutants from the grid chain 2 to ensure the separation effect of the grid chain 2 and the pollutants, and to ensure the cleaning effect of the grid chain 2, so that the grid chain 2 can stably and effectively intercept and separate pollutants in the sewage, ensuring the stable progress of the entire decontamination process.

[0047] It should be noted that the upper pressure rod 4 and the lower pressure rod 5 are used to drive the support plate 24 to tilt and deflect, driving the support plate 24 and the partition plates 23 on both sides to form a "Z" shape. The length of the upper pressure rod 4 is adapted to the length of the unloading section, and the upper pressure rod 4 is used to keep the grid chain 2 in a decontamination limit state (that is, the support plate 24 and the partition plates 23 on both sides form a "Z" shape).

[0048] When the supporting plate 24 is tilted, the supporting plate 24 and the separating plate 23 form a number of inclined grilles, which support the pollutants and move them upward, thereby achieving a decontamination effect. When separating pollutants, the supporting plate 24 loses the limit of the upper pressure rod 4, so that the supporting plate 24 tends to rotate in a vertical state, thereby facilitating the separation of pollutants and avoiding the accumulation of pollutants in the inclined grilles. At the same time, the supporting plate 24 in the vertical state facilitates the cleaning block 63 to move up and down for cleaning, further improving the cleaning effect of the supporting plate 24 and the separating plate 23, reducing the difficulty of cleaning the supporting plate 24 and the separating plate 23, and effectively ensuring the separation effect of the grid chain 2 and the pollutants. At the same time, the upper pressure rod 4 is used to ensure that the grid chain 2 is in a decontamination limit state. The overall structure is simple and the operation is stable, which effectively avoids the interference of the state conversion of the polluted grid chain 2 in the water, thereby ensuring the stability of the decontamination process of the grid chain 2.

[0049] refer to Figure 2 and Figure 4 In an optional embodiment: the drive system 3 is used to support and drive the grid chain 2, and the drive system 3 includes at least one driving shaft 31 and two driven shafts 32. A transmission assembly 34 for transmission connection is provided between the driving shaft 31 and the driven shaft 32. Both side ends of the driving shaft 31 and the driven shaft 32 are fixedly connected with a driving wheel 33, and the driving wheel 33 is engaged with the grid chain 2 in the inclined state of the supporting plate 24. The driving wheel 33 is used to drive the grid chain 2 to circulate inside the main frame 1, and also includes an underwater guide wheel assembly 35 rotatably connected to the underwater end of the main frame 1, and a transition guide wheel assembly 36 for supporting the grid chain 2.

[0050] It should be noted that the outer edges of the first chain plate 21 and the second chain plate 22 are attached to the main frame 1, and the main frame 1 is provided with a limiting ring for limiting the first chain plate 21 and the second chain plate 22 in the area of ​​the driving wheel 33. The limiting ring is attached to the outside of the first chain plate 21 and the second chain plate 22 to ensure that the grid chain 2 is stably engaged with the outside of the driving wheel 33.

[0051] It should be noted that a motor and a reducer are provided on the outside of the driving shaft 31, and the motor and the reducer are installed on the top of the main frame 1. The motor is used to drive the driving shaft 31 to rotate, and the driving shaft 31 drives the driven shaft 32 to rotate through the transmission assembly 34. The driving shaft 31 and the driven shaft 32 synchronously drive the driving wheel 33 to rotate, and the grid chain 2 is driven to rotate in a circle by rotating the driving wheel 33 at multiple points synchronously.

[0052] refer to Figure 3 In an optional embodiment: the grid chain 2 includes a unloading section and a loading section, the loading section and the unloading section are connected end to end, the loading section is inclined, the bottom of the loading section is placed underwater, the unloading section is arranged inside the main frame 1, the unloading section includes any one driven shaft 32 and the transition guide wheel assembly 36 to construct the horizontal section of the grid chain 2, the unloading mechanism 6 is arranged above the horizontal section of the grid chain 2, and the unloading section also includes a vertical section, and the horizontal section and the vertical section are connected end to end.

[0053] It should be noted that in the vertical section, the inclined grid opening faces downward, and the pollutants are separated from the grid chain 2 by gravity. When the grid chain 2 runs to the horizontal section, the unloading mechanism 6 further assists in cleaning the grid chain 2 to ensure the separation effect of the grid chain 2 and the pollutants.

[0054] By setting up multiple unloading areas, gravity is used to unload multiple parts of the collected pollutants, and then the unloading mechanism 6 is used to assist in cleaning the remaining pollutants in the horizontal section, thereby facilitating the long-term operation of the grid chain 2 and reducing the maintenance requirements of the grid decontamination machine.

[0055] In an optional embodiment, the underwater guide wheel assembly 35 includes a driving wheel 33 engaged with the grid chain 2 , and the tail ends of the upper pressure rod 4 and the lower pressure rod 5 are adapted to the underwater guide wheel assembly 35 .

[0056] It should be noted that, under the pressure of the lower pressure rod 5, the grid chain 2 causes the support plate 24 to enter an inclined state, which facilitates the engagement of the support plate 24 and the driving wheel 33 of the underwater guide wheel assembly 35. The grid chain 2 in the engaged state with the driving wheel 33 is in a pollutant intercepting state, and the top and bottom of the support plate 24 are respectively in contact with the adjacent partition plate 23, forming an inclined grid state.

[0057] The grid chain 2 that is out of engagement enters the area of ​​the upper pressure rod 4, and the upper pressure rod 4 continues to keep the grid chain 2 in the state of intercepting pollutants, stably constructing an inclined grid that intercepts pollutants.

[0058] During operation, the drive system 3 drives the grid chain 2 to rotate. When the grid chain 2 in the non-limiting state enters the position of the down-pressure rod 5, the grid chain 2 enters a stable limiting state. At this time, the grid chain 2 constructs a stable inclined grid for salvaging pollutants, and when the grid chain 2 in the limiting state is separated from the down-pressure rod 5, the grid chain 2 synchronously enters a state of engagement with the drive wheel 33 of the underwater guide wheel assembly 35, which facilitates the operation of the grid chain 2.

[0059] Furthermore, when the grid chain 2 is separated from the driving wheel 33 of the underwater guide wheel assembly 35, the grid chain 2 synchronously enters the position of the upper pressure rod 4, and the upper pressure rod 4 synchronously maintains the grid chain 2 in a stable limited state.

[0060] The upper pressure rod 4 is used to ensure the limit stability of the grid chain 2 during the decontamination process, thereby ensuring the stability of the grid chain 2 during the decontamination process. The overall structure is simple and has strong anti-interference ability against pollutants, which facilitates ensuring the stability and effect of the decontamination of the grid chain 2.

[0061] Example 2

[0062] refer to Figure 4 、 Figure 7 and Figure 8 , further on the basis of Example 1, the unloading mechanism 6 also includes an internal fixing frame 61 fixedly connected to the inside of the main frame 1, the bottom of the internal fixing frame 61 is fixedly connected to the support guide rod 62, the cleaning block 63 is slidably connected to the outside of the support guide rod 62, and a return spring 64 is provided between the cleaning block 63 and the internal fixing frame 61. The cleaning drive 65 includes a drive shaft 651 rotatably connected to the inside of the internal fixing frame 61, and the outside of the drive shaft 651 is fixedly connected to a drive cam 652. The end of the drive shaft 651 is provided with a bevel gear set 66, and the drive shaft 651 is connected to the output shaft 67 through the bevel gear set 66.

[0063] It should be noted that the output shaft 67 and the driving shaft 31 have matching rotational speeds, and both the output shaft 67 and the driving shaft 31 are in an intermittent rotation state.

[0064] Among them, a first chain plate 21 and a second chain plate 22 constitute a chain link, the distance between the hinge axes of the first chain plate 21 and the second chain plate 22 is a chain link distance, the active shaft 31 drives the grid chain 2 to rotate a chain link distance, and the output shaft 67 drives the driving cam 652 to rotate one circle.

[0065] When the driving shaft 31 drives the grid chain 2 to rotate the distance of one chain link, the output shaft 67 drives the driving cam 652 to rotate one circle, and then the driving shaft 31 drives the grid chain 2 to rotate the distance of one chain link.

[0066] Repeat the above steps to complete the operation process of the grid decontamination machine.

[0067] refer to Figure 7 In an optional embodiment, the cleaning block 63 and the driving cam 652 are each provided with several groups, the cleaning block 63 and the driving cam 652 cooperate with each other, and any adjacent driving cams 652 are deflected and misaligned by half a circle. The driving cam 652 is used to drive the cleaning block 63 to move up and down outside the support guide rod 62.

[0068] It should be noted that during the operation of the unloading mechanism 6, the output shaft 67 drives the drive shaft 651 to rotate through the bevel gear set 66, and the drive shaft 651 drives the drive cam 652 to rotate. When the drive shaft 651 rotates one circle, any adjacent cleaning blocks 63 move up and down alternately, and then return to remain above the horizontal section of the grid chain 2.

[0069] Among them, the bottom of the cleaning block 63 is fixedly connected with a long brush plate 631 and a short brush plate 632. The positions of the long brush plate 631 and the short brush plate 632 are adapted to the deflection direction of the supporting plate 24. The long brush plate 631 and the short brush plate 632 are used to be plugged in and moved on both sides of the supporting plate 24.

[0070] It should be noted that the long brush plate 631 first contacts the supporting plate 24 , and the long brush plate 631 is used to push the supporting plate 24 to rotate toward a vertical state. When the supporting plate 24 tends to a vertical state, the short brush plate 632 enters the other side of the supporting plate 24 .

[0071] It should be noted that bristles are provided on both sides of the long brush plate 631 and the short brush plate 632 for cleaning the sides of the supporting plate 24 and the separating plate 23 respectively.

[0072] Specifically:

[0073] In the initial state, the plurality of driving cams 652 are all in a convex horizontal state. At this time, the long brush plate 631 and the short brush plate 632 are both above the horizontal section of the grid chain 2, and the grid chain 2 is in an operational state.

[0074] During operation, the active shaft 31 and the driven shaft 32 drive the grid chain 2 to operate intermittently, and the rotation amplitude is one chain link distance. The rotation during the pauses causes fluctuations in the operation of the grid chain 2, which facilitates the separation of pollutants and flowing water. At the same time, in the horizontal section of the auxiliary unloading, when the grid chain 2 enters the bottom of the unloading mechanism 6, the grid chain 2 advances one chain link distance, and the driving shaft 651 drives the driving cam 652 to rotate. The driving cam 652 cooperates with the reset spring 64 to drive the cleaning block 63 to perform an up and down reciprocating motion, so that the cleaning block 63 pushes the long brush plate 631 and the short brush plate 632 to brush the supporting plate 24 and the partition plate 23 once, completing the cleaning of the grid chain 2, ensuring the overall unloading effect of the grid chain 2, and effectively avoiding the adhesion and accumulation of pollutants and the grid chain 2, and avoiding the interference of accumulated pollutants with the interception and retrieval effect of pollutants in the sewage, thereby ensuring the decontamination effect of the device and the stability of the decontamination process.

[0075] By setting up multiple groups of parallel cleaning blocks 63, the cleaning effect of the grid chain 2 is further improved, and the impact of pollutants adhering to the long brush plates 631 and the short brush plates 632 is reduced, thereby reducing the frequency of maintenance required for the device and facilitating long-term sewage removal work.

[0076] Example 3

[0077] refer to Figure 8 On the basis of the second embodiment, a movable cavity 633 is further provided inside the cleaning block 63, and two sets of connecting tubes 634 are fixedly connected to the inside of the movable cavity 633. The outside of the connecting tubes 634 is slidably connected to an inner plug plate 635. A vent is provided on the top of the connecting tube 634. The bottoms of the two sets of connecting tubes 634 are respectively connected to the long brush plate 631 and the short brush plate 632. The inner plug plate 635 is fixedly connected to the bottom of the support guide rod 62.

[0078] It should be noted that a number of air-jet holes are evenly formed on both sides of the long brush plate 631 and the short brush plate 632 .

[0079] The support guide rod 62 is configured as a hollow tube body, and the support guide rod 62 is connected to the lower cavity of the inner plug plate 635 of the active cavity 633. The top of the support guide rod 62 is connected to the outside. The inner plug plate 635 and the cleaning block 63 constitute a plunger barrel. The inner plug plate 635 is provided with a one-way air inlet hole. When the inner plug plate 635 moves upward in the active cavity 633, it pushes the gas into the connecting tube 634. When the inner plug plate 635 moves downward in the active cavity 633, the gas in the lower cavity of the inner plug plate 635 enters the upper cavity through the air inlet hole.

[0080] In the process of the cleaning block 63 driving the long brush plate 631 and the short brush plate 632 to clean the material support plate 24 and the partition plate 23, when the cleaning block 63 moves downward, since the position of the inner plug plate 635 is fixed by the support guide rod 62, the inner plug plate 635 moves upward inside the movable cavity 633 relative to the cleaning block 63.

[0081] Therefore, when the cleaning block 63 moves downward, the compressed air of the inner plug plate 635 enters the connecting pipe 634, and the compressed gas enters the long brush plate 631 and the short brush plate 632 through the connecting pipe 634, and then is ejected through both sides of the long brush plate 631 and the short brush plate 632. The ejected gas further achieves the effect of assisting in cleaning the material support plate 24 and the material partition plate 23. The ejected gas further avoids the contaminants from adhering to the long brush plate 631 and the short brush plate 632, and achieves the effect of assisting in cleaning the long brush plate 631 and the short brush plate 632, thereby improving the use effect and effective working time of the long brush plate 631 and the short brush plate 632, and ensuring the stability and effectiveness of the long brush plate 631 and the short brush plate 632 in cleaning the grid chain 2.

[0082] Example 4

[0083] refer to Figure 6 , further on the basis of Example 2: the internal sliding connection of the partition plate 23 is a movable tooth plate 231, the top of the movable tooth plate 231 is fixedly connected with a telescopic rake tooth 233, the telescopic rake tooth 233 passes through the partition plate 23, and a return tooth spring 232 is provided between the movable tooth plate 231 and the partition plate 23, and the end of the supporting plate 24 is fixedly connected with a push plate 241, which is used to push the movable tooth plate 231 to move.

[0084] When the grid chain 2 enters the dirt removal limit state, when the support plate 24 is tilted and deflected, the support plate 24 pushes the movable tooth plate 231 to move upward inside the partition plate 23 through the push plate 241, and the movable tooth plate 231 drives the telescopic rake teeth 233 to protrude to the outside of the partition plate 23, so that the grid chain 2 has a dirt removal inclined grid and protruding telescopic rake teeth 233, thereby further improving the interception and separation effect of pollutants, facilitating the pollutants to enter the top of the grid chain 2, and improving the dirt removal effect of the grid chain 2 on sewage. At the same time, when the grid chain 2 breaks away from the limit of the upper pressure rod 4 and the driving wheel 33, the movable tooth plate 231 retracts to the inside of the partition plate 23 under the action of the return spring 232, thereby facilitating the separation of pollutants and avoiding the trouble of the telescopic rake teeth 233 sticking to the pollutants.

[0085] Furthermore, since the telescopic rake teeth 233 and the return spring 232 are both installed inside the separator plate 23 , interference of sewage or pollutants on the return spring 232 is effectively avoided, thereby ensuring stable operation of the return spring 232 .

[0086] 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 screen decontamination machine for sewage treatment, comprising a main frame (1), wherein a screen chain (2) and a drive system (3) are provided inside the main frame (1), and characterized in that: The grid chain (2) comprises two groups of first chain plates (21) and second chain plates (22) that are alternately hinged in an annular shape, a material separator (23) being fixedly connected between the two side ends of the two groups of the first chain plates (21), and a material support plate (24) being rotatably connected to the middle of each of the first chain plates (21) and the second chain plates (22); An upper pressing rod (4) and a lower pressing rod (5) are fixedly connected to the interior of the main frame (1), and the upper pressing rod (4) and the lower pressing rod (5) are pressed against the top of the upper supporting plate (24) and the top of the lower supporting plate (24) respectively. The upper pressing rod (4) and the lower pressing rod (5) are used to drive the supporting plate (24) to tilt and deflect, and drive the supporting plate (24) and the spacer plates (23) on both sides to form a "Z" shape; A discharge mechanism (6) for assisting in the removal of impurities is provided inside the main frame (1); The unloading mechanism (6) includes a cleaning block (63) for brushing the outside of the supporting plate (24); A cleaning drive (65) is provided outside the cleaning block (63); The unloading mechanism (6) further comprises an inner fixing frame (61) fixedly connected to the interior of the main frame (1), a support guide rod (62) fixedly connected to the bottom of the inner fixing frame (61), a cleaning block (63) slidably connected to the exterior of the support guide rod (62), a return spring (64) provided between the cleaning block (63) and the inner fixing frame (61), the cleaning drive (65) comprising a drive shaft (651) rotatably connected to the interior of the inner fixing frame (61), a drive cam (652) fixedly connected to the exterior of the drive shaft (651), a bevel gear set (66) provided at the end of the drive shaft (651), and the drive shaft (651) being transmission-connected to an output shaft (67) via the bevel gear set (66); The cleaning blocks (63) and the driving cams (652) are provided in a plurality of groups. The cleaning blocks (63) and the driving cams (652) cooperate with each other, and any adjacent driving cams (652) are deflected and dislocated by half a circle. The driving cams (652) are used to drive the cleaning blocks (63) to move up and down outside the supporting guide rod (62); A long brush plate (631) and a short brush plate (632) are fixedly connected to the bottom of the cleaning block (63); the positions of the long brush plate (631) and the short brush plate (632) are adapted to the deflection direction of the supporting plate (24); the long brush plate (631) and the short brush plate (632) are used for plugging and moving on both sides of the supporting plate (24).

2. A screen cleaner for sewage treatment according to claim 1, characterized in that: The drive system (3) is used to support and drive the grid chain (2). The drive system (3) includes at least one driving shaft (31) and two driven shafts (32). A transmission assembly (34) for transmission connection is provided between the driving shaft (31) and the driven shaft (32). Both end portions of the driving shaft (31) and the driven shaft (32) are fixedly connected to driving wheels (33). The driving wheels (33) are engaged with the grid chain (2) in an inclined state of the supporting plate (24). The driving wheels (33) are used to drive the grid chain (2) to circulate and rotate inside the main frame (1). The drive system also includes an underwater guide wheel assembly (35) rotatably connected to the underwater end of the main frame (1), and a transition guide wheel assembly (36) for supporting the grid chain (2).

3. A screen cleaner for sewage treatment according to claim 2, characterized in that: The grid chain (2) includes a discharge section and a loading section, the loading section and the discharge section are connected end to end, the loading section is tilted, the bottom of the loading section is placed underwater, the discharge section is arranged inside the main frame (1), the discharge section includes any one driven shaft (32) and a transition guide wheel assembly (36) to construct a horizontal section of the grid chain (2), the discharge mechanism (6) is arranged above the horizontal section of the grid chain (2), and the discharge section also includes a vertical section, and the horizontal section and the vertical section are connected end to end.

4. A screen decontamination machine for sewage treatment according to claim 3, characterized in that: The underwater guide wheel assembly (35) includes a driving wheel (33) meshed with the grid chain (2), the tail ends of the upper pressure rod (4) and the lower pressure rod (5) are adapted to the underwater guide wheel assembly (35), and the length of the upper pressure rod (4) is adapted to the length of the unloading section.

5. The screen decontamination machine for sewage treatment according to claim 1, characterized in that: The cleaning block (63) has an interior with an active cavity (633), the interior of the active cavity (633) is fixedly connected to two groups of connecting tubes (634), the exterior of the connecting tubes (634) is slidably connected to an inner plug plate (635), the top of the connecting tubes (634) is provided with a vent hole, the bottoms of the two groups of connecting tubes (634) are respectively connected to the long brush plate (631) and the short brush plate (632), and the inner plug plate (635) is fixedly connected to the bottom of the support guide rod (62).

6. The screen decontamination machine for sewage treatment according to claim 1, characterized in that: The separator (23) is internally slidably connected to a movable tooth plate (231), the top of the movable tooth plate (231) is fixedly connected to a telescopic rake tooth (233), the telescopic rake tooth (233) passes through the separator (23), a return tooth spring (232) is provided between the movable tooth plate (231) and the separator (23), and the end of the supporting plate (24) is fixedly connected to a push plate (241), and the push plate (241) is used to push the movable tooth plate (231) to move.

Images