Filtering and impurity removing device for sludge treatment

Abstract

The invention provides a filtering and impurity removing device for sludge treatment, and belongs to the technical field of sludge impurity removal, the filtering and impurity removing device comprises a first mounting frame and a second mounting frame, an inner cylinder and an outer cylinder are arranged between the first mounting frame and the second mounting frame, the inner cylinder is located in the outer cylinder, and a driving mechanism is arranged on the first mounting frame, the inner cylinder and the outer cylinder. A discharging channel is formed in the position, located between the first mounting frame and the second mounting frame, of the lower side of the outer barrel, a bearing channel is formed in the side, away from the discharging channel, of the second mounting frame, a cleaning plate is arranged between the inner barrel and the outer barrel, and a braking mechanism is further arranged in the second mounting frame. The problems that when sludge is filtered in the prior art, after long-term use, meshes of a filter cartridge are prone to being blocked are solved, most solutions for the problem that the meshes of the filter cartridge are blocked by shutdown or by relying on an external mechanical device, the defects that operation is inconvenient, efficiency is low and the like exist, secondary pollution discharge is prone to being caused, and the problem that the filter cartridge is prone to being blocked is solved. And the production cost is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge impurity removers, and in particular relates to a filtering impurity removal device for sludge treatment. Background Art

[0002] Sludge is a solid sediment material produced by the water and sewage treatment process. In order to reduce the pollution of sludge to the environment, the sludge needs to be concentrated, tempered, dehydrated, stabilized, dried or incinerated to reduce, stabilize and harmlessly process. During the collection and transportation of sludge, it is easy to mix with impurities such as metal, wood, stone, plastic, etc. After the above substances enter the sludge treatment system of the garbage disposal station, they are easy to damage the sludge conveying equipment and subsequent treatment equipment. Therefore, it is necessary to use a filtering and impurity removal device to filter the large solid particles in the sludge.

[0003] When filtering existing sludge, the filter cartridge is prone to mesh clogging after long-term use. The solutions to the problem of filter cartridge mesh clogging are mostly to shut down the machine for clearing the blockage or rely on external mechanical devices for clearing the blockage. Online automatic clearing cannot be achieved, and there are disadvantages such as inconvenient operation, low efficiency, and long downtime. At the same time, the cleaning process is prone to secondary pollution emissions, which not only harms the environment, but also increases production costs. Summary of the invention

[0004] The present invention provides a filtering and impurity removal device for sludge treatment, which aims to solve the problem that the mesh of the filter cartridge is easily clogged after long-term use during the existing sludge filtering. The solutions to the problem of mesh clogging of the filter cartridge are mostly to stop the machine for clearing the blockage or rely on external mechanical devices for clearing the blockage, and online automatic clearing cannot be achieved. There are disadvantages such as inconvenient operation, low efficiency, and long downtime. At the same time, the cleaning process is likely to cause secondary pollution emissions, which not only harms the environment, but also increases the production cost.

[0005] An embodiment of the present invention provides a filtering and impurity removal device for sludge treatment, comprising a first mounting frame and a second mounting frame, wherein an inner cylinder and an outer cylinder are respectively provided between the first mounting frame and the second mounting frame, the inner cylinder is located inside the outer cylinder, and both ends of the inner cylinder extend to the outside of the first mounting frame and the second mounting frame, a driving mechanism is provided on the first mounting frame, the inner cylinder and the outer cylinder, a discharge channel is provided on the lower side of the outer cylinder located between the first mounting frame and the second mounting frame, a receiving channel is provided on the side of the second mounting frame away from the discharge channel, a cleaning plate is provided between the inner cylinder and the outer cylinder, and a braking mechanism is also provided in the second mounting frame.

[0006] Furthermore, the two ends of the outer cylinder are rotatably arranged between the first mounting frame and the second mounting frame, the outer wall surface of the inner cylinder is rotatably arranged between the first mounting frame and the second mounting frame, the outer cylinder and the inner cylinder are both provided with filter holes, the diameter of the filter hole of the outer cylinder is smaller than the diameter of the filter hole of the inner cylinder, a first discharge port is provided on the side of the outer cylinder close to the second mounting frame, and a second discharge port is provided on the rightmost side of the inner cylinder.

[0007] By adopting the above technical solution, the outer cylinder and the inner cylinder can filter the sludge entering the inner cylinder when they rotate, so that after the sludge is filtered by the outer cylinder and the inner cylinder, it can be divided into recyclables, medium impurities and large impurities with gradually increasing diameters, among which the recyclables can be filtered out from the filter holes of the inner cylinder and the outer cylinder, the medium impurities can be discharged from the first discharge port, and the large impurities can be discharged from the second discharge port.

[0008] Furthermore, the driving mechanism includes a fixing plate fixedly connected to the outer wall surface of the first mounting frame, a motor is mounted on the fixing plate, a column gear is fixed to the output end of the motor, a first annular gear ring is fixed to the inner wall surface of the outer cylinder, a second annular gear ring is fixed to the outer wall surface of the inner cylinder, and the column gear is meshed with the first annular gear ring and the second annular gear ring.

[0009] By adopting the above technical solution, after the motor is started, the column gear at its output end can rotate. Since the first annular gear ring and the second annular gear ring are both engaged with the column gear, the outer cylinder and the inner cylinder can rotate in opposite directions, so that the sludge is rolled and filtered inside.

[0010] Furthermore, the inner wall surfaces of the inner cylinder and the outer cylinder are both provided with spiral plates, and the spiral plates of the inner cylinder and the outer cylinder have opposite rotation directions.

[0011] By adopting the above technical solution, since the inner cylinder and the outer cylinder rotate in opposite directions, the spiral plates rotating in opposite directions can discharge the sludge toward the discharge ports of the outer cylinder and the inner cylinder.

[0012] Furthermore, the discharge channel is divided into a first discharge channel and a second discharge channel, an inclined inclined plate is provided between the first discharge channel and the second discharge channel, one end of the inclined plate is located at the first discharge channel lower than one end of the second discharge channel, and the first discharge port is provided toward the second discharge channel.

[0013] By adopting the above technical solution, the recyclables filtered out from the filter holes of the inner cylinder and the outer cylinder can fall onto the inclined plate and slide out from the first discharge channel. The impurities filtered from the inner cylinder to the outer cylinder cannot pass through the filter holes of the outer cylinder, and will be transported in the interlayer between the inner cylinder and the outer cylinder, and finally discharged to the outside through the second discharge channel.

[0014] Furthermore, a first sliding cavity is provided at the lower side of the inner cylinder between the first installation frame and the second installation frame, a limiting rod is provided in the first sliding cavity, and both ends of the cleaning plate slide along the limiting rod.

[0015] By adopting the above technical solution, the limiting rod can limit the cleaning plate, so that the cleaning plate can only slide up and down along the limiting rod without deviation.

[0016] Furthermore, the braking mechanism includes a first hydraulic cylinder installed on the lower side of the first sliding cavity of the second mounting frame, the output end of the first hydraulic cylinder is fixed to the end of the cleaning plate on the same side, the inner bottom of the second mounting frame is also provided with a second sliding cavity, the second sliding cavity is vertically arranged, a second hydraulic cylinder is installed at the bottom of the second sliding cavity, a sliding block is installed at the top of the second hydraulic cylinder, the top of the sliding block is connected to the top of the second sliding cavity by a spring, and the first hydraulic cylinder is connected to the second hydraulic cylinder.

[0017] By adopting the above technical solution, when the first hydraulic cylinder pushes downward, the second hydraulic cylinder can push upward, and when the second hydraulic cylinder pushes downward, the first hydraulic cylinder can push upward. When the first hydraulic cylinder pushes upward, the cleaning plate can be lifted, and when the second hydraulic cylinder pushes upward, the slider can be lifted, thereby pushing the spring downward.

[0018] Furthermore, the receiving channel is fixed on the outer wall surface of the second mounting frame, an extension block is fixed on the side of the slider close to the receiving channel, the other end of the extension block is hinged with a receiving plate, the other end of the receiving plate is fixed with a resistance block, the resistance block is in resistance contact with the inner wall surface of the receiving channel, and an elastic telescopic part is also provided in the receiving channel, one end of the elastic telescopic part is movably connected to the wall surface of the receiving channel away from the extension block, and the other end is movably connected to the upper surface of the receiving plate, and the inner cylinder above the receiving plate is provided with a third discharge port.

[0019] By adopting the above technical solution, when the filter holes of the inner cylinder are blocked, the medium impurities cannot pass through the inner cylinder into the interlayer between the outer cylinder and the inner cylinder, and then will be transported to the receiving plate through the third discharge port along with the spiral plate in the inner cylinder. When more and more medium impurities accumulate on the receiving plate, the weight on the receiving plate will increase, because the resistance block at the other end of the receiving plate is in resistance contact with the inner wall surface of the receiving channel, and then the hinged receiving plate cannot be opened. When the weight on the receiving plate continues to increase, the receiving plate will slide downward with the extension block and the slider, thereby stretching the spring. , push the second hydraulic cylinder downward, and then the first hydraulic cylinder can push upward to lift the cleaning plate. When the resistance block no longer resists the inner wall of the receiving channel, the receiving plate tilts, and then the impurities on the receiving plate are poured out. After pouring out, under the action of the elastic telescopic part, the receiving plate will be reset, and the receiving plate, the extension block and the slider will slide upward and reset under the action of the spring. At this time, the cleaning plate will also push the first hydraulic cylinder downward under the action of its own weight, so that the second hydraulic cylinder and the spring work together to reset the receiving plate.

[0020] Furthermore, a plurality of metal elastic parts are provided on the upper surface of the cleaning plate.

[0021] By adopting the above technical solution, when the cleaning plate slides upward along the limit rod, the metal elastic part can be inserted into the filter hole of the inner cylinder to clear the blocked filter hole, thereby improving the filtering and screening effect and avoiding filtering failure due to blockage.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention provides an inner cylinder and an outer cylinder. When the outer cylinder and the inner cylinder are rotating, the sludge entering the inner cylinder can be filtered, so that after the sludge is filtered by the outer cylinder and the inner cylinder, it can be divided into recyclables, medium impurities and large impurities with gradually increasing diameters, wherein the recyclables can be filtered out from the filter holes of the inner cylinder and the outer cylinder, the medium impurities can be discharged from the first discharge port, and the large impurities can be discharged from the second discharge port, so that the entire sludge can be discharged from different discharge ports according to the diameter size.

[0024] 2. The present invention arranges the driving mechanism and the spiral plate. After the motor is started, the column gear at its output end can rotate. Since the first annular gear ring and the second annular gear ring are both engaged with the column gear, the outer cylinder and the inner cylinder can rotate in opposite directions, so that the sludge is rolled and filtered inside. At the same time, since the rotation directions of the inner cylinder and the outer cylinder are opposite, the spiral plates rotating in opposite directions can discharge the sludge toward the discharge ports of the outer cylinder and the inner cylinder.

[0025] 3. Through the setting of the discharge channel, the present invention allows the recyclables filtered out from the filter holes of the inner cylinder and the outer cylinder to fall onto the inclined plate and slide out from the first discharge channel. The impurities filtered from the inner cylinder to the outer cylinder cannot pass through the filter holes of the outer cylinder, and are then transported in the interlayer between the inner cylinder and the outer cylinder, and finally discharged to the outside through the second discharge channel. Impurities of different sizes can be discharged from different discharge ports.

[0026] 4. Through the setting of the receiving channel and the braking mechanism, the receiving plate of the present invention can slide downward after bearing enough weight, push the second hydraulic cylinder downward, and then the first hydraulic cylinder can push upward. After the weight on the receiving plate is reduced, under the action of the spring and the weight of the cleaning plate itself, the first hydraulic cylinder is pushed downward and reset, and the second hydraulic cylinder is pushed upward. At the same time, the elastic telescopic part will reset the receiving plate after the receiving plate is tilted and the impurities are dumped.

[0027] 5. The present invention provides a cleaning plate, a first sliding cavity and a limit rod. The limit rod can limit the cleaning plate, so that the cleaning plate can only slide up and down along the limit rod without deviation. When the cleaning plate slides upward along the limit rod, the metal elastic part can be inserted into the filter hole of the inner cylinder to clear the blocked filter hole, thereby improving the filtering and screening effect and avoiding filtering due to blockage. There is no need to stop the machine for clearing the blockage, which greatly improves the convenience of operation, improves efficiency and reduces production costs. At the same time, the metal elastic part is intermittently inserted into the filter hole without having to be inserted in the filter hole all the time, which greatly extends the service life of the metal elastic part.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a side view structural schematic diagram of an embodiment of the present invention;

[0031] Figure 2 It is a side perspective structural schematic diagram of an embodiment of the present invention;

[0032] Figure 3 It is a schematic diagram of the left front view structure of an embodiment of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the right side front view of an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the top view of the cleaning plate according to an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of the side structure of a cleaning plate according to an embodiment of the present invention;

[0036] Figure numerals: 1. first mounting frame; 11. first sliding cavity; 12. limiting rod; 2. second mounting frame; 3. inner cylinder; 31. second discharge port; 32. spiral plate; 33. third discharge port; 4. outer cylinder; 41. first discharge port; 5. driving mechanism; 51. fixing plate; 52. motor; 53. column gear; 54. first annular gear ring; 55. second annular gear ring; 6. discharge channel; 61. first discharge channel; 62. second discharge channel; 63. inclined plate; 7. receiving channel; 71. extension block; 72. receiving plate; 73. resistance block; 74. elastic telescopic member; 8. cleaning plate; 81. metal elastic member; 9. braking mechanism; 91. first hydraulic cylinder; 92. second sliding cavity; 93. second hydraulic cylinder; 94. slider; 95. spring. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figure 1-6The embodiment of the present invention provides a filtering and impurity removal device for sludge treatment, comprising a first mounting frame 1 and a second mounting frame 2, wherein an inner cylinder 3 and an outer cylinder 4 are respectively arranged between the first mounting frame 1 and the second mounting frame 2, the inner cylinder 3 is located inside the outer cylinder 4, and both ends of the inner cylinder 3 extend to the outside of the first mounting frame 1 and the second mounting frame 2, and both ends of the outer cylinder 4 are rotatably arranged between the first mounting frame 1 and the second mounting frame 2, and the outer wall surface of the inner cylinder 3 is rotatably arranged in the first mounting frame 1 and the second mounting frame 2, and filter holes are arranged on the outer cylinder 4 and the inner cylinder 3, wherein the inner cylinder 3 has no filter holes on the outer wall surface of the contact part with the first mounting frame 1 and the second mounting frame 2, so that sludge cannot pass through, and the diameter of the filter hole of the outer cylinder 4 is smaller than the diameter of the filter hole of the inner cylinder 3, and a first discharge port 41 is arranged on the side of the outer cylinder 4 close to the second mounting frame 2, and one end of the outer cylinder 4 close to the second mounting frame 2 is connected to the part with the filter hole through a plurality of connecting rods, and the gap between the plurality of connecting rods is the first discharge port 41, and the inner cylinder 3 is provided with a filter hole. The rightmost side of the inner cylinder 3 is provided with a second discharge port 31, the leftmost side of the inner cylinder 3 is provided with a feed port, the inner wall surfaces of the inner cylinder 3 and the outer cylinder 4 are both provided with spiral plates 32, the spiral plates 32 of the inner cylinder 3 and the outer cylinder 4 rotate in opposite directions, and the outer cylinder 4 and the inner cylinder 3 can filter the sludge entering the inner cylinder 3 when they rotate, because the inner cylinder 3 and the outer cylinder 4 rotate in opposite directions, and the spiral plates 32 rotating in opposite directions can discharge the sludge toward the discharge ports of the outer cylinder 4 and the inner cylinder 3, so that the sludge passes through the outer cylinder 4 and the inner cylinder 3. After filtration, it can be divided into recyclables, medium impurities and large impurities with gradually increasing diameters. The recyclables are mostly composed of sludge and grease with high fluidity and high water content, the medium impurities are mostly composed of small sand particles with poor fluidity, and the large impurities are mostly composed of larger components such as stones and mineral fragments. The recyclables can be filtered out from the filter holes of the inner cylinder 3 and the outer cylinder 4, the medium impurities can be discharged from the first discharge port 41, and the large impurities can be discharged from the second discharge port 31.

[0039] Reference Figure 1-6 A driving mechanism 5 is provided on the first mounting frame 1, the inner cylinder 3 and the outer cylinder 4. The driving mechanism 5 includes a fixing plate 51 fixedly connected to the outer wall surface of the first mounting frame 1, a motor 52 is installed on the fixing plate 51, a column gear 53 is fixed to the output end of the motor 52, a first annular gear ring 54 is fixed to the inner wall surface of the outer cylinder 4, a second annular gear ring 55 is fixed to the outer wall surface of the inner cylinder 3, the column gear 53 is meshed with the first annular gear ring 54 and the second annular gear ring 55, the first annular gear ring 54 and the second annular gear ring 55 are in shape with the wall surface of the outer cylinder 4 and the inner cylinder 3, and teeth are provided on the surfaces of the first annular gear ring 54 and the second annular gear ring 55. After the motor 52 is started, the column gear 53 at its output end can rotate, because the first annular gear ring 54 and the second annular gear ring 55 are both meshed with the column gear 53, and then the outer cylinder 4 and the inner cylinder 3 can rotate in opposite directions, so that the sludge is rolled and filtered inside.

[0040] Reference Figure 1-6 A discharge channel 6 is provided on the lower side of the outer cylinder 4 between the first mounting frame 1 and the second mounting frame 2. The discharge channel 6 is divided into a first discharge channel 61 and a second discharge channel 62. An inclined inclined plate 63 is provided between the first discharge channel 61 and the second discharge channel 62. One end of the inclined plate 63 is located at the first discharge channel 61 and is lower than the other end of the second discharge channel 62. The first discharge port 41 is provided toward the second discharge channel 62. The recyclables filtered out from the filter holes of the inner cylinder 3 and the outer cylinder 4 can fall onto the inclined plate 63 and slide out from the first discharge channel 61. The impurities filtered from the inner cylinder 3 to the outer cylinder 4 cannot pass through the filter holes of the outer cylinder 4, and are transported in the interlayer between the inner cylinder 3 and the outer cylinder 4, and are finally discharged to the outside through the second discharge channel 62.

[0041] Reference Figure 1-6 A cleaning plate 8 is provided between the inner cylinder 3 and the outer cylinder 4. The setting of the cleaning plate 8 will not affect the conveying of impurities in the interlayer between the outer cylinder 4 and the inner cylinder 3. A plurality of metal elastic parts 81 are provided on the upper surface of the cleaning plate 8. The shape of the cleaning plate 8 is adapted to the shape of the inner cylinder 3 and has the same curvature. A first sliding cavity 11 is provided at the lower side of the inner cylinder 3 where the first mounting frame 1 and the second mounting frame 2 are located. A limiting rod 12 is provided in the first sliding cavity 11. Both ends of the cleaning plate 8 slide along the limiting rod 12. The limiting rod 12 can limit the cleaning plate 8 so that the cleaning plate 8 can only slide up and down along the limiting rod 12 without deviation. When the cleaning plate 8 moves along the limiting rod 12 When sliding upward, the metal elastic part 81 can be inserted into the filter hole of the inner cylinder 3 to clear the blocked filter hole, thereby improving the filtering and screening effect and avoiding filtering due to blockage. There is no need to stop the machine for clearing the blockage, which greatly improves the convenience of operation, improves efficiency and reduces production costs. At the same time, the metal elastic part 81 is intermittently inserted into the filter hole and does not need to be inserted in the filter hole all the time, which greatly extends the service life of the metal elastic part 81. When the cleaning plate 8 rises or falls to the maximum, the cleaning plate 8 will not touch the first annular gear ring 54, the second annular gear ring 55 and the spiral plate 32 on the inner wall of the outer cylinder 4, and thus will not affect the rotation of the inner cylinder 3 and the outer cylinder 4.

[0042] Reference Figure 1-6A braking mechanism 9 is also provided in the second mounting frame 2. The braking mechanism 9 includes a first hydraulic cylinder 91 installed at the lower side of the first sliding cavity 11 of the second mounting frame 2. The output end of the first hydraulic cylinder 91 is fixed to the end of the cleaning plate 8 on the same side. A second sliding cavity 92 is also provided at the inner bottom of the second mounting frame 2. The second sliding cavity 92 is vertically arranged. A second hydraulic cylinder 93 is installed at the bottom of the second sliding cavity 92. A slider 94 is installed at the top of the second hydraulic cylinder 93. A spring 95 is connected to the top of the slider 94 and the top of the second sliding cavity 92. The first hydraulic cylinder 91 is connected to the second hydraulic cylinder 93. When the first hydraulic cylinder 91 is contracted, the second hydraulic cylinder 93 can push upward and lift the slider 94, thereby pushing the spring 95 downward. When the second hydraulic cylinder 93 is contracted, the first hydraulic cylinder 91 can push upward and lift the cleaning plate 8, thereby stretching the spring 95.

[0043] Reference Figure 1-6A receiving channel 7 is provided on the side of the second mounting frame 2 away from the discharge channel 6, and the receiving channel 7 is fixed on the outer wall of the second mounting frame 2. An extension block 71 is fixed on the side of the slider 94 close to the receiving channel 7. A receiving plate 72 is hingedly connected to the other end of the extension block 71, and a resistance block 73 is fixed to the other end of the receiving plate 72. The resistance block 73 is in contact with the inner wall of the receiving channel 7, so that the receiving plate 72 cannot be turned over in the receiving channel 7. An elastic telescopic member 74 is also provided in the receiving channel 7. The elastic force of the elastic telescopic member 74 is greater than the elastic force of the spring 95. One end of the elastic telescopic member 74 is movably connected to the wall of the receiving channel 7 away from the extension block 71, and the other end is connected to the receiving plate 7. 2 is slidable and has an angle movable. The inner cylinder 3 above the receiving plate 72 is provided with a third discharge port 33. The filter hole diameter at the third discharge port 33 is the same as the filter hole diameter at other places of the inner cylinder 3. When the filter hole of the inner cylinder 3 is blocked, the medium impurities cannot pass through the inner cylinder 3 and enter the sandwich between the outer cylinder 4 and the inner cylinder 3, and then will be transported to the receiving plate 72 through the third discharge port 33 along with the spiral plate 32 in the inner cylinder 3. When more and more medium impurities accumulate on the receiving plate 72, the weight on the receiving plate 72 will increase, because the resistance block 73 at the other end of the receiving plate 72 is in resistance contact with the inner wall surface of the receiving channel 7, and then the hinged receiving plate 72 cannot be opened. When the weight on the receiving channel 7 continues to increase, the receiving plate 72 will slide downward with the extension block 71 and the slider 94, thereby stretching the spring 95 and pushing the second hydraulic cylinder 93 downward, so that the first hydraulic cylinder 91 can overcome the weight of the cleaning plate 8 and push upward to lift the cleaning plate 8. When the abutment block 73 no longer abuts against the inner wall of the receiving channel 7, the receiving plate 72 tilts, thereby pouring out the impurities on the receiving plate 72. After pouring out, under the action of the elastic telescopic member 74, the receiving plate 72 will be reset, and the receiving plate 72, the extension block 71 and the slider 94 will slide upward and reset under the action of the spring 95. At this time, the cleaning plate 8 will also be reset under the action of its own weight. Next, the first hydraulic cylinder 91 is pushed downward, so that the second hydraulic cylinder 93 and the spring 95 work together to reset the receiving plate 72. During this process, the resetting actions of the spring 95, the elastic telescopic member 74 and the first hydraulic cylinder 91 are performed simultaneously. Because the elastic force of the elastic telescopic member 74 is greater than the elastic force of the spring 95, the receiving plate 72 can be reset before the slider 94. At the same time, the elastic telescopic member 74 has a certain delay when performing the resetting action, so that the impurities in the receiving plate 72 have enough time to dump out, and the receiving plate 72 will not rebound immediately after some of the impurities are dumped, resulting in the weight of the dumped impurities being insufficient to make the receiving plate 72 slide upward.

[0044] The specific implementation method is as follows: when in use, the motor 52 drives the inner cylinder 3 and the outer cylinder 4 to rotate in opposite directions through the first annular gear ring 54, the second annular gear ring 55 and the column gear 53, and the sludge enters the inner cylinder 3 from the left feed port, and the recyclables in the sludge can pass through the filter holes of the inner cylinder 3 and the outer cylinder 4 and fall onto the inclined plate 63, and are discharged from the first discharge channel 61, and the medium impurities in the sludge can pass through the filter holes of the inner cylinder 3 and the outer cylinder 4 into the interlayer of the inner cylinder 3 and the outer cylinder 4, but cannot pass through the filter holes of the outer cylinder 4, and with the rolling of the outer cylinder 4 and the setting of the spiral plate 32, the medium impurities can fall from the first discharge port 41 to the second discharge channel 62 and be discharged, and the remaining large impurities can be discharged from the second discharge channel 62. The impurities in the filter are discharged from the second discharge port 31. After long-term use, the filter holes of the inner tube 3 are prone to blockage. When blockage occurs, some impurities cannot pass through the filter holes and enter the interlayer. At this time, they will be discharged from the third discharge port 33 of the inner tube 3 to the receiving plate 72 under the drive of the spiral plate 32. When there is nothing on the receiving plate 72, under the weight of the cleaning plate 8 itself and the action of the spring 95, the first hydraulic cylinder 91 is pushed downward. At this time, the second hydraulic cylinder 93 drives the slider 94 and the extension block 71 to push upward, so that the slider 94, the extension block 71 and the receiving plate 72 are located at the top. When impurities in the receiving plate 72 continue to fall, the weight on the receiving plate 72 continues to increase, which will overcome the The weight of the cleaning plate 8 and the tension of the spring 95 push the second hydraulic cylinder 93 downward, and then the first hydraulic cylinder 91 drives the cleaning plate 8 to push upward, so that the metal elastic member 81 on the cleaning plate 8 can be inserted into the filter hole of the inner cylinder 3. During the rotation of the inner cylinder 3, the filter holes of the inner cylinder 3 are cleaned in turn, so that the filter holes are no longer blocked, and there is no need to stop the machine for clearing the blockage, which greatly improves the convenience of operation, improves efficiency, and reduces production costs. At the same time, the metal elastic member 81 is intermittently inserted into the filter hole, and there is no need to insert it in the filter hole all the time, which greatly extends the service life of the metal elastic member 81. When the second hydraulic cylinder 93 is pushed downward to the maximum limit, the receiving plate 72 is at the lowest point at this time. As the impurities continue to fall, the weight of the impurities overcomes the elasticity of the elastic telescopic member 74, and the receiving plate 72 can be rotated open to dump all the impurities inside. After the impurities are dumped out, the weight on the receiving plate 72 is reduced. Under the action of the weight of the elastic telescopic member 74, the spring 95 and the cleaning plate 8, the receiving plate 72, the slider 94 and the cleaning plate 8 are all reset. At the same time, the elastic telescopic member 74 has a certain delay when performing the reset action, so that the impurities in the receiving plate 72 have enough time to be dumped. After some impurities are dumped, the receiving plate 72 will not rebound immediately, resulting in the weight of the dumped impurities being insufficient to slide the receiving plate 72 upward.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A filtering and impurity removal device for sludge treatment, comprising a first mounting frame (1) and a second mounting frame (2), characterized in that: An inner cylinder (3) and an outer cylinder (4) are respectively provided between the first installation frame (1) and the second installation frame (2); the inner cylinder (3) is located inside the outer cylinder (4); both ends of the inner cylinder (3) extend to the outside of the first installation frame (1) and the second installation frame (2); a driving mechanism (5) is provided on the first installation frame (1), the inner cylinder (3) and the outer cylinder (4); a discharge channel (6) is provided on the lower side of the outer cylinder (4) located between the first installation frame (1) and the second installation frame (2); a receiving channel (7) is provided on the side of the second installation frame (2) away from the discharge channel (6); a cleaning plate (8) is provided between the inner cylinder (3) and the outer cylinder (4); and a braking mechanism (9) is also provided in the second installation frame (2).

2. The filtering and impurity removal device for sludge treatment according to claim 1, characterized in that: The two ends of the outer cylinder (4) are rotatably arranged between the first mounting frame (1) and the second mounting frame (2); the outer wall surface of the inner cylinder (3) is rotatably arranged in the first mounting frame (1) and the second mounting frame (2); both the outer cylinder (4) and the inner cylinder (3) are provided with filter holes; the diameter of the filter holes of the outer cylinder (4) is smaller than the diameter of the filter holes of the inner cylinder (3); a first discharge port (41) is provided on a side of the outer cylinder (4) close to the second mounting frame (2); and a second discharge port (31) is provided on the rightmost side of the inner cylinder (3).

3. The filtering and impurity removal device for sludge treatment according to claim 1 is characterized in that: The driving mechanism (5) comprises a fixing plate (51) fixedly connected to the outer wall surface of the first mounting frame (1), a motor (52) being mounted on the fixing plate (51), a column gear (53) being fixed to the output end of the motor (52), a first annular gear ring (54) being fixed to the inner wall surface of the outer cylinder (4), a second annular gear ring (55) being fixed to the outer wall surface of the inner cylinder (3), and the column gear (53) being meshed with the first annular gear ring (54) and the second annular gear ring (55).

4. The filtering and impurity removal device for sludge treatment according to claim 2 is characterized in that: The inner wall surfaces of the inner cylinder (3) and the outer cylinder (4) are both provided with spiral plates (32), and the spiral plates (32) of the inner cylinder (3) and the outer cylinder (4) have opposite rotation directions.

5. The filtering and impurity removal device for sludge treatment according to claim 2, characterized in that: The discharge channel (6) is divided into a first discharge channel (61) and a second discharge channel (62); an inclined plate (63) is provided between the first discharge channel (61) and the second discharge channel (62); one end of the inclined plate (63) located at the first discharge channel (61) is lower than the other end of the second discharge channel (62); and the first discharge port (41) is provided toward the second discharge channel (62).

6. The filtering and impurity removal device for sludge treatment according to claim 1, characterized in that: The first installation frame (1) and the second installation frame (2) are provided with a first sliding cavity (11) at the lower side of the inner cylinder (3), and a limiting rod (12) is provided in the first sliding cavity (11), and the two ends of the cleaning plate (8) slide along the limiting rod (12).

7. The filtering and impurity removal device for sludge treatment according to claim 6, characterized in that: The braking mechanism (9) comprises a first hydraulic cylinder (91) installed at the lower side of the first sliding chamber (11) of the second mounting frame (2); the output end of the first hydraulic cylinder (91) is fixed to the end of the cleaning plate (8) on the same side; the inner bottom of the second mounting frame (2) is also provided with a second sliding chamber (92); the second sliding chamber (92) is arranged vertically; a second hydraulic cylinder (93) is installed at the bottom of the second sliding chamber (92); a sliding block (94) is installed at the top of the second hydraulic cylinder (93); a spring (95) is connected between the top of the sliding block (94) and the top of the second sliding chamber (92); the first hydraulic cylinder (91) is connected to the second hydraulic cylinder (93).

8. The filtering and impurity removal device for sludge treatment according to claim 7, characterized in that: The receiving channel (7) is fixed on the outer wall surface of the second mounting frame (2); an extension block (71) is fixed on the side of the slider (94) close to the receiving channel (7); the other end of the extension block (71) is hinged with a receiving plate (72); the other end of the receiving plate (72) is fixed with a resistance block (73); the resistance block (73) is in resistance contact with the inner wall surface of the receiving channel (7); an elastic telescopic member (74) is also provided in the receiving channel (7); one end of the elastic telescopic member (74) is movably connected to the wall surface of the receiving channel (7) away from the extension block (71); the other end is movably connected to the upper surface of the receiving plate (72); the inner cylinder (3) above the receiving plate (72) is provided with a third discharge port (33).

9. The filtering and impurity removal device for sludge treatment according to claim 7, characterized in that: A plurality of metal elastic parts (81) are provided on the upper surface of the cleaning plate (8).

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