Non-metal internal inflow type grid not prone to scaling

Abstract

The utility model relates to a non-metal internal inflow type grid not prone to scaling. The non-metal internal inflow type grid comprises a machine box, rake tooth plates are arranged at the two opposite ends of the machine box, a plurality of rake teeth are evenly distributed on the rake tooth plates at equal intervals, the rake teeth abut against the surface of a filter screen plate, and moving assemblies in one-to-one correspondence with the two rake tooth plates are arranged in the machine box; the moving assembly drives the rake tooth plate to reciprocate in the length direction of the filter screen plate, the moving assembly drives the rake tooth plate to reciprocate in the length direction of the filter screen plate, in the moving process, all-directional cleaning of the filter screen plate in the length direction and the width direction is achieved through rake teeth, and the possibility that the filter screen plate is blocked due to sludge dirt residue accumulation is reduced. The cleaning machine has the effect of improving the cleaning efficiency of the cleaning machine.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a non-metallic internal flow-in type grid that is not prone to scaling. Background Art

[0002] The internal inlet screen decontamination machine is a high-efficiency sewage treatment equipment that combines pollution interception and pollution removal. The non-metal mesh plate internal inlet screen decontamination machine refers to a decontamination machine that uses non-metal mesh plates as filter media. It has the advantages of corrosion resistance, wear resistance, and light weight.

[0003] A conventional non-metallic mesh plate internal inlet screen dirt remover includes a chassis, with chains connected end to end in a closed-loop structure sliding on both sides of the chassis, multiple non-metallic mesh plates installed between the two chains, and a flushing water pipe installed on the top surface of the chassis. The flushing water pipe is used to flush the filter mesh plate, and the chassis is equipped with a slag collecting tank. During use, sewage enters the chassis, and the dirt in the sewage is intercepted under the filtering action of the non-metallic mesh plate, and the filtered sewage flows out from the drain outlet. The non-metallic mesh plates on both sides are driven by the chain to extract the dirt intercepted within the length range from bottom to top. When reaching the upper part, through the steering function of the sprocket, under the flushing action of the overhead flushing water pipe, the dirt intercepted on the filter mesh plate is flushed into the slag collecting tank, thereby achieving the cleaning of the sewage.

[0004] However, the conventional method of cleaning the filter screen is to only flush the sludge through the top flushing water pipe. This cleaning method has a poor cleaning effect, which makes it difficult to completely clean the sludge on the filter screen. The residual sludge accumulates on the filter screen and easily generates dirt, which in turn blocks the filter screen and reduces the filtering effect, and ultimately reduces the decontamination effect of the internal inlet grille, which has obvious shortcomings. Utility Model Content

[0005] In order to improve the efficiency of dirt removal, the present application provides a non-metallic internal flow grille that is not prone to scaling.

[0006] The present application provides a non-metallic internal flow grille that is not prone to scaling and adopts the following technical solutions:

[0007] A non-metallic internal flow grille that is not easy to scale includes a chassis, a plurality of filter screen plates connected end to end in a closed loop are arranged in the chassis, a flushing water pipe is arranged on the top of the chassis, a slag collecting trough is arranged inside the chassis, rake tooth plates are arranged at opposite ends of the chassis, a plurality of rake teeth are evenly distributed at equal intervals on the rake tooth plates, the rake teeth abut the surface of the filter screen plates, a moving component corresponding to the two rake tooth plates is arranged in the chassis, and the moving component drives the rake tooth plates to move back and forth along the length direction of the filter screen plates.

[0008] By adopting the above technical solution, in the process of the chain driving the filter screen to circulate in the chassis, the moving component drives the rake plate to move back and forth along the length direction of the filter screen. During the movement, the rake teeth realize all-round cleaning of the filter screen in the length and width directions, thereby improving the cleaning effect of the rake plate on the filter screen, reducing the possibility of clogging the filter screen due to residual silt and dirt accumulation, thereby reducing the possibility of reduced filtering effect of the filter screen, and improving the pollution removal efficiency of the pollution removal machine.

[0009] Optionally, the moving component includes a driving block slidably connected to the chassis, the driving block is an inclined block, and a connecting block and a guide block are respectively provided at opposite ends of the rake tooth plate, the connecting block is slidably connected to the inclined surface of the driving block, and a guide sleeve that slides with the guide block is provided on the inner wall of the chassis, and a first spring is provided in the guide sleeve, one end of the first spring is connected to the inner wall of the guide sleeve, and the other end is connected to the guide block, and a cam is rotatably connected in the chassis, and when the raised end of the cam abuts the bottom surface of the driving block, the connecting block is set at the lowest point of the inclined surface of the driving block, the first spring is compressed, and a rotating component that drives the two cams to rotate is provided on the chassis.

[0010] By adopting the above technical solution, the rotation of the rotating assembly drives the cam to rotate. When the raised end of the cam gradually rotates toward the driving block, the driving block is gradually lifted by the cam, and the connecting block slides from the higher position of the inclined surface of the driving block to the lowest point. At this time, the connecting block drives the rake plate to move toward the direction of the guide sleeve, and the rake plate drives the guide block to squeeze the first spring. When the raised end of the cam is away from the driving block, the thrust exerted on the driving block disappears, and the accumulated elastic force of the first spring pushes the rake plate to move toward the connecting block. At the same time, the driving block also slides downward under the action of gravity, and the connecting block slides from the lowest point to the higher position on the inclined surface of the driving block until it returns to its initial position. This arrangement realizes the reciprocating movement of the rake plate along the length direction of the filter screen plate, thereby realizing all-round cleaning of the filter screen plate.

[0011] Optionally, the driving block is provided with a limiting groove along the inclined direction, and the connecting block is slidably connected in the limiting groove.

[0012] By adopting the above technical solution, the setting of the limit groove limits the moving distance of the connecting block on the driving block, avoiding the situation where the connecting block is separated from the inclined surface of the driving block during the rotation of the cam, thereby ensuring the smooth movement of the rake plate along the length direction of the filter screen plate.

[0013] Optionally, the rake tooth plate is provided with mounting grooves corresponding to the plurality of rake teeth one by one, the rake teeth are slidably connected in the corresponding mounting grooves, a mounting plate is slidably connected in each mounting groove, the rake teeth are arranged on the mounting plate, a second spring is provided in each mounting groove, one end of the second spring is connected to the inner side wall of the mounting groove, and the other end is connected to the mounting plate, the second spring presses the rake teeth against the surface of the filter mesh plate.

[0014] By adopting the above technical solution, as the rake teeth are used for a longer time, the ends of the rake teeth close to the filter screen plate will gradually wear out. When the rake teeth are unable to abut against the filter screen plate due to wear, the second spring pushes the mounting plate toward the filter screen plate, and the movement of the mounting plate drives the rake teeth to abut against the filter screen plate again. This arrangement realizes timely compensation of the distance between the rake teeth and the filter screen plate, ensures that the rake teeth effectively clean the filter screen plate, and further improves the dirt removal efficiency of the dirt removal machine.

[0015] Optionally, a plurality of scraping strips are provided on the inner side wall of the mounting groove, and the scraping strips abut against the outer surface of the rake teeth. A pulling assembly corresponding to the two rake tooth plates is provided in the chassis, and the pulling assembly includes a winding roller rotatably connected to the inside of the chassis, and a connecting rope corresponding to the plurality of mounting plates is provided on the winding roller, one end of the connecting rope is connected to the winding roller, and the other end is connected to the corresponding mounting plate. A driving assembly for driving the two winding rollers to rotate alternately is provided on the chassis.

[0016] By adopting the above technical solution, when the driving component drives one of the winding rollers to rotate, the winding roller drives the connecting rope to be wound on the winding roller, and the connecting rope pulls the mounting plate toward the winding roller, and the mounting plate drives the rake teeth to move toward the inside of the mounting groove. During the movement, the scraper scrapes off the dirt attached to the rake teeth. When the driving component cancels the force on the winding roller, the second spring resets and pushes the mounting plate to move, and the mounting plate drives the rake teeth to contact the filter screen again. The setting of the pulling component and the scraper strip realizes the cleaning of the rake teeth, effectively avoids the accumulation of dirt or impurities on the rake teeth, ensures the cleaning effect of the rake teeth on the filter screen, extends the service life of the rake teeth, and further improves the pollution removal efficiency of the pollution removal machine.

[0017] Optionally, the driving assembly includes a third motor arranged on the outer wall of the chassis, the output shaft of the third motor is fixedly connected to an incomplete gear, the two winding rollers are provided with gears that mesh with the tooth ends of the incomplete gears, each of the winding rollers is provided with a torsion spring, one end of the torsion spring is connected to the outer wall of the chassis, and the other end is connected to the winding roller, when the torsion spring is in a natural state, the connecting rope between the winding roller and the mounting plate is in a relaxed state.

[0018] By adopting the above technical solution, the third motor drives the incomplete gear to rotate. When the toothed end of the incomplete gear meshes with one of the gears, the incomplete gear drives the gear to rotate. The rotation of the gear drives the winding roller coaxially fixed with the gear to rotate. When the incomplete gear disengages from the gear, the torsion spring resets and pulls the winding roller to reset. The winding roller releases the connecting rope. The connecting rope is in a relaxed state to ensure the tightening effect of the second spring. This arrangement realizes the intermittent rotation of the two winding rollers, thereby realizing the alternating cleaning of the two rake plates, ensuring that there are always rake plates to clean the filter screen during the operation of the dirt remover.

[0019] Optionally, the inner wall of the chassis is coated with a polytetrafluoroethylene coating.

[0020] By adopting the above technical solution, the polytetrafluoroethylene coating has good corrosion resistance and smoothness, which reduces the occurrence of dirt in the sewage adhering to the baffle, thereby increasing the probability of the dirt smoothly entering the slag collecting tank.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This invention provides a rake plate and a moving assembly. The moving assembly drives the rake plate to move back and forth along the length of the filter screen. During the movement, the rake teeth clean the filter screen in all directions in the length and width, reducing the possibility of clogging the filter screen due to the accumulation of sludge and dirt residue, thereby reducing the possibility of reduced filtering effect of the filter screen and improving the decontamination efficiency of the decontamination machine.

[0023] 2. This application provides a second spring. When the rake teeth are unable to abut against the filter screen due to wear, the second spring pushes the mounting plate toward the filter screen. The movement of the mounting plate drives the rake teeth to abut against the filter screen again. This arrangement achieves timely compensation of the distance between the rake teeth and the filter screen, ensuring that the rake teeth effectively clean the filter screen, thereby further improving the decontamination efficiency of the decontamination machine.

[0024] 3. This application sets up scraping bars, pulling components and driving components. The driving component drives the pulling component to pull the rake teeth to move into the installation groove. During the movement, the scraping bars scrape off the dirt attached to the rake teeth. This setting realizes the cleaning of the rake teeth, effectively avoids the accumulation of dirt or impurities on the rake teeth, ensures the cleaning effect of the rake teeth on the filter plate, extends the service life of the rake teeth, and further improves the dirt removal efficiency of the dirt remover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of this application.

[0026] Figure 2It is a cross-sectional view of the rake tooth plate in the embodiment of the present application.

[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0029] Figure 5 It is a cross-sectional view of the chassis in the embodiment of the present application.

[0030] Figure 6 yes Figure 5 Enlarged view of point C in the middle.

[0031] Figure 7 It is a structural diagram of the pulling component and the driving component in the embodiment of the present application.

[0032] Explanation of the accompanying drawings: 01, chassis; 02, water inlet; 03, drain outlet; 04, chain; 05, filter screen; 06, first motor; 07, flushing water pipe; 08, slag collecting trough; 1, rake plate; 101, rake plate; 2, moving assembly; 21, drive block; 211, limit slot; 22, connecting block; 23, guide block; 24, guide sleeve; 25, first spring; 26, cam; 3, rotating assembly; 31, second motor; 32, pulley; 33, belt; 4, mounting slot; 41, scraper bar; 5, mounting plate; 6, second spring; 7, pulling assembly; 71, winding roller; 72, connecting rope; 8, drive assembly; 81, third motor; 82, incomplete gear; 83, gear; 84, torsion spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 This application is described in further detail.

[0034] The embodiments of the present application disclose a non-metallic internal flow grille that is not prone to scaling.

[0035] Reference Figure 1 and Figure 2 A non-metallic internal flow grille that is not easy to scale includes a chassis 01, a water inlet 02 and a drain outlet 03 are provided at the lower part of the chassis 01, and chains 04 connected end to end in a closed loop structure are slidably connected on both sides of the interior of the chassis 01, and multiple filter screens 05 are installed between the two chains 04. The filter screen plates 05 are non-metallic screen plates, and a first motor 06 for driving the chain 04 to move is installed on the outer wall of the chassis 01. A flushing water pipe 07 is provided on the top surface of the interior of the chassis 01, and the water outlet end of the flushing water pipe 07 is arranged toward the topmost filter screen plate 05 inside the chassis 01, and a slag collecting trough 08 is installed inside the chassis 01.

[0036] Sewage enters the chassis 01 from the water inlet 02. The dirt in the sewage is intercepted by the filter plate 05, and the filtered sewage flows out from the drain outlet 03. Driven by the chain 04, the filter plates 05 on both sides extract the dirt intercepted within the length range from bottom to top. When reaching the upper part, the dirt intercepted on the filter plate 05 is flushed into the slag collecting tank 08 through the steering function of the sprocket and the flushing action of the overhead flushing water pipe 07.

[0037] Reference Figure 2 、 Figure 3 and Figure 4 , the two opposite ends of the chassis 01 are slidably connected with rake tooth plates 1, each rake tooth plate 1 has a plurality of rake teeth 101 evenly distributed along the length direction, the length direction of the rake tooth plate 1 is parallel to the length direction of the filter screen plate 05, each rake tooth 101 abuts against the surface of the filter screen plate 05, and a moving component 2 corresponding to the two rake tooth plates 1 is provided in the chassis 01.

[0038] Reference Figure 2 、 Figure 3 and Figure 4 The moving assembly 2 includes a driving block 21 slidably connected to the inner wall of the chassis 01. The sliding direction of the driving block 21 is perpendicular to the length direction of the filter screen plate 05. The driving block 21 is an inclined block. The two opposite ends of the rake plate 1 are fixedly connected with a connecting block 22 and a guide block 23. The driving block 21 is provided with a limiting groove 211 along the inclined direction. The connecting block 22 is slidably connected in the limiting groove 211. A guide sleeve 24 is fixedly connected to the side wall of the chassis 01 away from the driving block 21. The guide block 23 is slidably connected to the inside of the guide sleeve 24. Under the sliding cooperation with the guide block 23, the rake plate 1 can only move along the length direction of the filter screen plate 05. A first spring 25 is provided in the guide sleeve 24. One end of the first spring 25 is fixedly connected to the inner side wall of the guide sleeve 24, and the other end is fixedly connected to the guide block 23. A cam 26 is rotatably connected to the inner side wall of the chassis 01. Each cam 26 is arranged directly below the driving block 21. When the raised end of the cam 26 abuts the bottom surface of the driving block 21, the connecting block 22 is arranged at the lowest point of the inclined surface of the driving block 21, and the first spring 25 is compressed.

[0039] Reference Figures 1 to 4 A rotating assembly 3 is provided on the outer wall of the chassis 01. The rotating assembly 3 includes a second motor 31 fixedly connected to the outer wall of the chassis 01. The output shaft of the second motor 31 is coaxially fixedly connected to the rotating shaft of one of the cams 26. A pulley 32 is fixedly connected to the rotating shaft of each cam 26, and a belt 33 is commonly sleeved on the outer surfaces of the two pulleys 32.

[0040] In the process of the chain 04 driving the filter screen plate 05 to circulate in the chassis 01, the rake teeth 101 and the filter screen plate 05 produce a relative displacement in the vertical direction, and the rake teeth 101 cleans the filter screen plate 05. At the same time, the second motor 31 drives the two cams 26 to rotate synchronously through the pulley 32 and the belt 33. When the raised end of the cam 26 gradually rotates toward the driving block 21, the driving block 21 is gradually lifted by the cam 26, and the connecting block 22 slides from the higher position of the inclined surface of the driving block 21 to the lowest point. At this time, the connecting block 22 drives the rake plate 1 to move toward the direction of the guide sleeve 24, and the rake plate 1 drives the guide block 23 to squeeze the first spring 25. When the raised end of the cam 26 rotates to away from the driving block 2 1, the thrust exerted on the driving block 21 disappears, and the elastic force accumulated by the first spring 25 pushes the rake plate 1 toward the connecting block 22. At the same time, the driving block 21 also slides downward under the action of gravity, and the connecting block 22 slides from the lowest point to a higher position on the inclined surface of the driving block 21 until it returns to its initial position. This arrangement causes the rake plate 1 and the filter screen plate 05 to produce a horizontal relative displacement, thereby achieving all-round cleaning of the filter screen plate 05 in the length and width directions, improving the cleaning effect of the rake plate 1 on the filter screen plate 05, reducing the possibility of clogging the filter screen plate 05 due to residual accumulation of sludge and dirt, and thereby reducing the possibility of reduced filtering effect of the filter screen plate 05, thereby improving the pollution removal efficiency of the sewage remover.

[0041] Reference Figure 5 and Figure 6 As the rake plate 1 is in continuous contact with and cleaning the filter screen plate 05, it will be affected by friction. As the rake plate 1 is used for a longer time, the rake teeth 101 gradually wear and become shorter. When the rake teeth 101 are worn to the point where they cannot abut against the surface of the filter screen plate 05, the worn rake teeth 101 cannot effectively clean the impurities on the filter screen plate 05.

[0042] When the tooth 101 is not able to abut on the filter screen plate 05 due to wear, the second spring 6 pushes the mounting plate 5 toward the filter screen plate 05, and the mounting plate 5 moves and drives the tooth 101 to abut against the filter screen plate 05 again.

[0043] Reference Figure 5 、 Figure 6 and Figure 7 After the tooth rake cleans the filter screen plate 05 for a long time, a large amount of silt and dirt will adhere to the surface of the rake teeth 101. The accumulation of silt and dirt will directly affect the cleaning effect of the tooth rake on the filter screen plate 05.

[0044] In order to solve this problem, a plurality of scraping strips 41 are fixedly connected to the inner side wall of each mounting groove 4. The scraping strips 41 are made of rubber material with good elasticity. Each scraping strip 41 abuts against the outer surface of the tooth rake. A pulling assembly 7 corresponding to the two rake tooth plates 1 is provided in the chassis 01. The pulling assembly 7 includes a winding roller 71 rotatably connected to the inside of the chassis 01. The winding roller 71 is provided with a connecting rope 72 corresponding to the plurality of mounting grooves 4. One end of the connecting rope 72 is fixedly connected to the winding roller 71, and the other end passes through the outer side wall of the tooth rake plate and extends to the corresponding mounting groove 4 and is fixedly connected to the mounting plate 5. A driving assembly 8 for driving the two winding rollers 71 to rotate alternately is provided on the chassis 01.

[0045] Reference Figure 5 、 Figure 6 and Figure 7 The driving assembly 8 includes a third motor 81 fixedly connected to the outer wall of the chassis 01, and the output shaft of the third motor 81 is coaxially fixedly connected to an incomplete gear 82. The same end of the two winding rollers 71 passes through the side of the chassis 01 and is coaxially fixedly connected to a gear 83. The toothed end of the incomplete gear 82 is meshed with the two gears 83. Each winding roller 71 is provided with a torsion spring 84, one end of the torsion spring 84 is fixedly connected to the outer wall of the chassis 01, and the other end is fixedly connected to the winding roller 71. When the torsion spring 84 is in a natural state, the connecting rope 72 between the winding roller 71 and the mounting plate 5 is in a relaxed state. The tension of the connecting rope 72 in the relaxed state is much smaller than the elastic force of the second spring 6, thereby reducing the influence of the connecting rope 72 on the tightening effect of the second spring 6.

[0046] The third motor 81 drives the incomplete gear 82 to rotate. When the toothed end of the incomplete gear 82 rotates to mesh with one of the gears 83, the incomplete gear 82 drives the gear 83 to rotate. The rotation of the gear 83 drives the coaxially connected winding roller 71 to rotate. The winding roller 71 drives the connecting rope 72 to be wound on the winding roller 71. The connecting rope 72 pulls the mounting plate 5 toward the winding roller 71. The mounting plate 5 drives the rake teeth 101 to move toward the inside of the mounting groove 4. During the movement, the scraper bar 41 scrapes off the dirt attached to the rake teeth 101. When the toothed end of the incomplete gear 82 disengages from the gear 83, the torque The spring 84 is reset to pull the winding roller 71 to reset, and the winding roller 71 releases the connecting rope 72 to a relaxed state. The second spring 6 pushes the mounting plate 5 to move under the action of elastic force, and the mounting plate 5 pushes the rake teeth 101 to contact the surface of the filter screen plate 05 again. The rake teeth 101 on the rake plate 1 are cleaned by pulling the component 7, which effectively avoids the accumulation of dirt or impurities on the rake teeth 101, ensuring the cleaning effect of the rake teeth 101 on the filter screen plate 05. At the same time, the two rake plates 1 of the driving component 8 are cleaned alternately, ensuring that there is always a rake plate 1 to clean the filter screen plate 05 during the operation of the dirt remover.

[0047] The implementation principle of the non-metallic internal flow-in type grille which is not easy to scale in the embodiment of the present application is as follows: when the chain 04 drives the filter screen plate 05 to circulate in the chassis 01, the rake teeth 101 and the filter screen plate 05 produce a relative displacement in the vertical direction, and the rake teeth 101 cleans the filter screen plate 05. At the same time, the second motor 31 drives the two cams 26 to rotate synchronously through the pulley 32 and the belt 33. When the raised end of the cam 26 gradually rotates toward the driving block 21, the driving block 21 is gradually lifted by the cam 26, and the connecting block 22 slides from the higher position of the inclined surface of the driving block 21 to the lowest point. At this time, the connecting block 22 drives the rake plate 1 to move toward the guide sleeve 24, and the rake plate 1 drives the guide block 23 to squeeze the first spring 25. When the cam 2 When the raised end of 6 rotates to move away from the driving block 21, the thrust exerted on the driving block 21 disappears, and the elastic force accumulated by the first spring 25 pushes the rake plate 1 toward the connecting block 22. At the same time, the driving block 21 also slides downward under the action of gravity, and the connecting block 22 slides from the lowest point to a higher position on the inclined surface of the driving block 21 until it returns to its initial position. This arrangement causes the rake plate 1 and the filter screen plate 05 to produce a horizontal relative displacement, thereby achieving all-round cleaning of the filter screen plate 05 in the length and width directions, improving the cleaning effect of the rake plate 1 on the filter screen plate 05, reducing the possibility of clogging the filter screen plate 05 due to residual accumulation of sludge and dirt, and thereby reducing the possibility of reduced filtering effect of the filter screen plate 05, thereby improving the cleaning efficiency of the dirt remover.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A non-metallic internal flow-in type grid that is not easy to scale, comprising a chassis (01), a plurality of filter screens (05) connected end to end in a closed loop are arranged in the chassis (01), a flushing water pipe (07) is arranged on the top of the chassis (01), and a slag collecting tank (08) is arranged inside the chassis (01), characterized in that: The chassis (01) is provided with rake tooth plates (1) at opposite ends, and a plurality of rake teeth (101) are evenly distributed at equal intervals on the rake tooth plates (1), and the rake teeth (101) abut against the surface of the filter screen plate (05). The chassis (01) is provided with a moving assembly (2) corresponding to the two rake tooth plates (1) on a one-to-one basis, and the moving assembly (2) drives the rake tooth plates (1) to move back and forth along the length direction of the filter screen plate (05).

2. The non-metallic internal flow type grid that is not prone to scaling according to claim 1, characterized in that: The moving assembly (2) includes a driving block (21) slidably connected to the chassis (01), the driving block (21) is an inclined block, and the two opposite ends of the rake tooth plate (1) are respectively provided with a connecting block (22) and a guide block (23), the connecting block (22) is slidably connected to the inclined surface of the driving block (21), and a guide sleeve (24) is provided on the inner side wall of the chassis (01) to slide with the guide block (23), and a first spring (25) is provided in the guide sleeve (24). One end of the first spring (25) is connected to the inner wall of the guide sleeve (24), and the other end is connected to the guide block (23). A cam (26) is rotatably connected in the chassis (01). When the raised end of the cam (26) abuts against the bottom surface of the driving block (21), the connecting block (22) is set at the lowest point of the inclined surface of the driving block (21), the first spring (25) is compressed, and a rotating component (3) for driving the two cams (26) to rotate is set on the chassis (01).

3. The non-metallic internal flow type grid that is not prone to scaling according to claim 2, characterized in that: The driving block (21) is provided with a limiting groove (211) along an inclined direction, and the connecting block (22) is slidably connected in the limiting groove (211).

4. The non-metallic internal flow type grid that is not prone to scaling according to claim 3 is characterized in that: The rake tooth plate (1) is provided with mounting grooves (4) corresponding to the plurality of rake teeth (101) one by one, the rake teeth (101) are slidably connected in the corresponding mounting grooves (4), a mounting plate (5) is slidably connected in each mounting groove (4), the rake teeth (101) are arranged on the mounting plate (5), a second spring (6) is arranged in each mounting groove (4), one end of the second spring (6) is connected to the inner side wall of the mounting groove (4), and the other end is connected to the mounting plate (5), and the second spring (6) presses the rake teeth (101) against the surface of the filter screen plate (05).

5. The non-metallic internal flow type grid that is not prone to scaling according to claim 4, characterized in that: A plurality of scraping strips (41) are provided on the inner peripheral side wall of the mounting groove (4), and the scraping strips (41) abut against the outer surface of the rake teeth (101). A pulling assembly (7) corresponding to the two rake tooth plates (1) is provided in the chassis (01), and the pulling assembly (7) includes a winding roller (71) rotatably connected to the inside of the chassis (01), and a connecting rope (72) corresponding to the plurality of mounting plates (5) is provided on the winding roller (71), one end of the connecting rope (72) is connected to the winding roller (71), and the other end is connected to the corresponding mounting plate (5). A driving assembly (8) for driving the two winding rollers (71) to rotate alternately is provided on the chassis (01).

6. The non-metallic internal flow type grid that is not prone to scaling according to claim 5, characterized in that: The driving assembly (8) includes a third motor (81) arranged on the outer wall of the chassis (01), the output shaft of the third motor (81) is fixedly connected to an incomplete gear (82), and the two winding rollers (71) are provided with a gear (83) having a tooth end meshing with the incomplete gear (82), and each winding roller (71) is provided with a torsion spring (84), one end of the torsion spring (84) is connected to the outer wall of the chassis (01), and the other end is connected to the winding roller (71), and when the torsion spring (84) is in a natural state, the connecting rope (72) between the winding roller (71) and the mounting plate (5) is in a relaxed state.

7. The non-metallic internal flow type grid that is not prone to scaling according to claim 1, characterized in that: The inner wall of the chassis (01) is coated with a polytetrafluoroethylene coating.

Images