Municipal engineering sewage filtering device

Abstract

The invention relates to a municipal engineering sewage filtering device, belongs to the technical field of sewage filtering, and aims to solve the problem that water flow possibly forcibly rushes through a local channel to directly penetrate through a filtering layer to cause deterioration of the quality of discharged water, the municipal engineering sewage filtering device comprises a filtering tank, a plugging plate is fixedly mounted in the filtering tank, and a plurality of first filtering cylinders are mounted on the surface of the plugging plate in a penetrating manner; a second filter cartridge is rotatably connected to the surface of the first filter cartridge, an elastic piece is arranged in the first filter cartridge and is in transmission connection with the second filter cartridge, a conical filter material plate is arranged on the surface of the elastic piece, the conical filter material plate is in sliding connection with the inner wall of the first filter cartridge, and the conical filter material plate is in sliding clamping connection with the plugging plate; a secondary channel is formed through the first filter holes and the second filter holes, flow division and pressure reduction can be achieved, the pressure on the surface of the conical filter material plate can be reduced, and the possibility that impurities penetrate through the conical filter material plate due to high pressure is reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration technology, specifically to a wastewater filtration device for municipal engineering. Background Technology

[0002] The construction of various public infrastructure supporting urban life falls under the category of municipal engineering. This includes common projects such as urban roads, bridges, subways, underground pipelines, tunnels, waterways, rail transit, sewage treatment, and garbage disposal. It also includes various pipelines closely related to daily life, such as rainwater, sewage, water supply, greywater, electricity (outside the red line), telecommunications, heating, and gas. In addition, the construction of squares and urban greening also falls under the category of municipal engineering.

[0003] Current municipal engineering sewage filtration devices typically use fixed filter media (such as flat plate filters and filter screens) and filter pore sizes. When impurities in the sewage accumulate on the surface of the filter media, they gradually form a blockage layer. In the early stages of blockage, the water flow resistance increases, creating a pressure difference before and after the filter media. The water flow resistance slowly increases. When the blockage reaches a certain level, the gaps or pores of the filter media are severely filled, and the water flow may forcefully open local channels and directly penetrate the filter layer, leading to the deterioration of the effluent water quality.

[0004] To address the above issues, a sewage filtration device for municipal engineering is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a municipal engineering sewage filtration device. By using this device, the problem in the background mentioned above can be solved, which is that water flow may forcefully break through local channels and directly penetrate the filter layer, leading to the deterioration of the effluent water quality.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A municipal engineering wastewater filtration device includes a filter tank. A sealing plate is fixedly installed inside the filter tank. A plurality of first filter cylinders are installed through the surface of the sealing plate. Second filter cylinders are rotatably connected to the surfaces of the first filter cylinders. An elastic element is provided inside the first filter cylinder and is pulsatorically connected to the second filter cylinder. A conical filter plate is provided on the surface of the elastic element and is slidably connected to the inner wall of the first filter cylinder. The conical filter plate is also slidably engaged with the sealing plate. A rotating element is provided inside the filter tank, with one end of the rotating element being connected through to one side of the sealing plate. A suction element is provided at one end of the filter tank, and a concave cylinder is rotatably connected to one end of the suction element. Both ends of the concave cylinder are in contact with the sealing plate, and one end of the rotating element is fixedly connected to the concave cylinder. A plurality of first filter holes are opened through the surface of the first filter cylinders, and a second filter hole corresponding to the first filter holes is opened through the surface of the second filter cylinders.

[0008] Furthermore, the filter tank includes a tank body and an inlet pipe connected to the bottom of the tank body, an outlet pipe connected to one side of the tank body, and four support legs fixedly installed at the bottom of the tank body.

[0009] Furthermore, the sealing plate has four through holes on its surface. The first filter cylinder is installed inside the through holes. A concave plate is fixedly installed inside the through holes. A first L-shaped clamping plate is inclinedly arranged inside the concave plate. Rotating shafts are fixedly installed on both sides of the first L-shaped clamping plate, and both rotating shafts are rotatably connected to the concave plate. A torsion spring is fixedly installed on the surface of the rotating shaft, and one end of the torsion spring is fixedly connected to the concave plate. An arc groove is opened on one side of the concave plate. A connecting plate is fixedly installed on the surface of the rotating shaft. A limit rod is fixedly installed on one side of the connecting plate, and the limit rod is slidably connected to the arc groove.

[0010] Furthermore, a cylinder is fixedly installed inside the first filter cartridge, and a limit block is correspondingly installed inside the cylinder.

[0011] Furthermore, a fixed cylinder is fixedly installed inside the second filter cylinder, and the fixed cylinder is rotatably connected to the first filter cylinder. Several ball bearings are installed inside the fixed cylinder.

[0012] Furthermore, the elastic element includes a vertical rod and a circular plate fixed to one end of the vertical rod. The vertical rod is slidably connected to the cylinder. A spring is in contact with the surface of the vertical rod. One end of the spring is fixedly connected to the first filter cylinder. The conical filter plate is slidably connected to the vertical rod, and the other end of the spring is fixedly connected to the conical filter plate. A screw is fixedly installed at one end of the vertical rod, and a ball bearing is in contact with the surface of the screw. A first sliding groove is formed through the vertical rod near the circular plate. Second sliding grooves are formed on both sides of the other end of the vertical rod. The limiting block is slidably connected to the second sliding groove.

[0013] Furthermore, a crossbar is fixedly installed inside the conical filter plate, the crossbar is slidably connected to the vertical bar, a scraper is fixedly installed inside the crossbar, the scraper is slidably connected to the first sliding groove, and a second L-shaped clamping plate is fixedly installed at one end of the conical filter plate.

[0014] Furthermore, the rotating component includes a fixed frame and a motor fixed inside the fixed frame. A rotating rod is fixedly installed at the output end of the motor, and a protrusion is fixedly installed on the surface of the rotating rod. A support rod is fixedly installed on one side of the concave cylinder, and the support rod is rotatably connected to the tank body. Both the rotating rod and the protrusion are slidably connected to the support rod.

[0015] Furthermore, sealing rings are installed at both ends of the concave cylinder.

[0016] Furthermore, the suction component includes an L-shaped tube and a one-way valve installed on the L-shaped tube. The L-shaped tube is connected through one end of the tank body, and the concave cylinder is rotatably connected to the L-shaped tube. A suction pump is fixedly installed at the other end of the L-shaped tube, and a discharge pipe is installed at one end of the suction pump.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. When there are few impurities on the surface of the conical filter plate, the elastic element maintains the conical filter plate in its initial position, and the first and second filter holes are in the maximum overlap state (maximum pore size), ensuring high flow rate water efficiency and forming a dual filtration effect to improve the filtration effect.

[0019] 2. When impurities increase on the surface of the conical filter plate, the water flow resistance pushes the conical filter plate upward, forming a secondary channel through the first and second filter holes. This can achieve flow diversion and pressure reduction, reduce the pressure on the surface of the conical filter plate, and reduce the possibility of impurities penetrating the conical filter plate due to high pressure.

[0020] 3. As clogging worsens, the filtration capacity of the cone-shaped filter plate decreases. At this point, the secondary channel gradually becomes the main water flow path. Its dynamically shrinking pore size perfectly matches the need for higher filtration precision as impurities increase, ensuring that the overall filtration effect does not decrease with the degree of clogging.

[0021] 4. The negative pressure generated by the suction component is applied to the inside of the conical filter plate and the first filter cylinder, ensuring sufficient power to pull the conical filter plate downwards instantly, while maximizing the efficiency of impurity removal and discharge.

[0022] 5. The instantaneous downward movement of the conical filter plate will drive the elastic element, causing the second filter cylinder to return to its initial position, and the conical filter plate will be stuck on the sealing plate. At this time, the first and second filter holes will be reset to their maximum diameter, and the suction negative pressure can penetrate the channel without obstruction, forcefully peeling away stubborn impurities on the surface and inside the holes of the conical filter plate.

[0023] 6. Because the conical filter plate moves downward and forms a gap with the first filter cylinder, the suction force can carry out impurities, and the conical filter plate can facilitate the removal of impurities from the inside of the first filter cylinder, thus improving the control and treatment effect of wastewater. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the sealing plate structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the filter tank structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the elastic element structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the concave plate structure of the present invention;

[0029] Figure 6 For the present invention Figure 4Schematic diagram of the structure at point A in the middle;

[0030] Figure 7 For the present invention Figure 3 Schematic diagram of the structure at point B;

[0031] Figure 8 For the present invention Figure 5 Schematic diagram of the structure at point C;

[0032] Figure 9 This is a schematic diagram of the conical filter plate structure of the present invention.

[0033] In the diagram: 1. Filter tank; 11. Tank body; 12. Inlet pipe; 13. Outlet pipe; 14. Support leg; 2. Sealing plate; 21. Through hole; 22. Concave plate; 23. First L-shaped clamping plate; 24. Rotating shaft; 25. Torsion spring; 26. Arc groove; 27. Connecting plate; 28. Limiting rod; 3. First filter cylinder; 31. Cylinder; 32. Limiting block; 4. Second filter cylinder; 41. Fixed cylinder; 42. Ball bearing; 5. Elastic element; 51. Vertical rod; 52. Circular plate; 53. Spring; 54. Screw; 55. First slide groove; 56. Second slide groove; 6. Conical filter plate; 61. Crossbar; 62. Scraper; 63. Second L-shaped clamping plate; 7. Rotating component; 71. Fixing frame; 72. Motor; 73. Rotating rod; 74. Protrusion; 75. Support rod; 8. Suction component; 81. L-shaped tube; 82. One-way valve; 83. Suction pump; 84. Discharge pipe; 9. Concave cylinder; 91. Sealing ring; 10. First filter hole; 20. Second filter hole. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To address the technical issue that when blockage reaches a certain level, water flow may forcefully open local channels and directly penetrate the conical filter plate 6, leading to deterioration of the effluent water quality, such as... Figures 1-9 As shown, the following preferred technical solutions are provided:

[0036] like Figures 1-2As shown, a municipal engineering sewage filtration device includes a filter tank 1. A sealing plate 2 is fixedly installed inside the filter tank 1. Several first filter cylinders 3 are installed through the surface of the sealing plate 2. There are four first filter cylinders 3. The sealing plate 2 can separate the sewage, so that the sewage can only enter the other side of the sealing plate 2 through the first filter cylinders 3. A second filter cylinder 4 is rotatably connected to the surface of the first filter cylinder 3. The first filter cylinder 3 and the second filter cylinder 4 can also achieve the effect of filtering impurities, improving the filtration effect and improving the control and treatment effect of water pollution. An elastic element 5 is provided inside the first filter cylinder 3, and the elastic element 5 is drivenly connected to the second filter cylinder 4. A conical filter plate 6 is provided on the surface of the elastic element 5. The conical filter plate 6 is slidably connected to the inner wall of the first filter cylinder 3, and the conical filter plate 6 is slidably engaged with the sealing plate 2.

[0037] Wastewater can be initially filtered by the conical filter plate 6. When a lot of impurities are attached to the surface of the conical filter plate 6, the water flow resistance pushes the conical filter plate 6 upward, causing the first filter cylinder 3 and the second filter cylinder 4 to gradually misalign. At this time, a double barrier is formed by the initial interception of the conical filter plate 6 and the secondary filtration of the first filter cylinder 3 and the second filter cylinder 4. Even if some impurities penetrate the conical filter plate 6, they will be intercepted again by the first filter cylinder 3 and the second filter cylinder 4. This solves the problem that impurities can easily penetrate after the traditional device is blocked. The filter tank 1 is equipped with a rotating part 7, and one end of the rotating part 7 is connected to one side of the sealing plate 2. The filter tank 1 is equipped with a suction part 8 at one end.

[0038] The suction component 8 can be used to suction and clean the impurities attached to the conical filter plate 6, reducing the concentrated blockage of impurities in the conical filter plate 6 and extending the effective filtration time. One end of the suction component 8 is rotatably connected to a concave cylinder 9, both ends of which are in contact with the sealing plate 2. One end of the rotating component 7 is fixedly connected to the concave cylinder 9. The surface of the first filter cylinder 3 is provided with several first filter holes 10, and the surface of the second filter cylinder 4 is provided with second filter holes 20 corresponding to the first filter holes 10. When there are few impurities on the surface of the conical filter plate 6, the elastic component 5 maintains the conical filter plate 6 in the initial position, and the first filter holes 10 and the second filter holes 20 are in the maximum overlap state with the largest hole diameter, ensuring high flow rate water efficiency.

[0039] Initially, when there are few impurities on the surface of the conical filter plate 6, the elastic element 5 maintains the conical filter plate 6 in its initial position. The first filter hole 10 and the second filter hole 20 are in a state of maximum overlap with the largest pore size, ensuring high flow rate efficiency. As impurities increase and resistance rises, the conical filter plate 6 moves upward. Since the elastic element 5 is connected to the second filter cylinder 4, it drives the second filter cylinder 4 to rotate, causing the first filter hole 10 and the second filter hole 20 to gradually misalign until the pore size of the first filter hole 10 and the second filter hole 20 is minimized at the maximum stroke, thus forming a more severe blockage. The finer the aperture of the first filter hole 10 and the second filter hole 20, the more they work together to form a gradient interception mechanism. Even if some impurities penetrate the conical filter plate 6, they will be intercepted a second time by the narrowed channels formed by the first filter hole 10 and the second filter hole 20. Therefore, the first filter hole 10 and the second filter hole 20 form a secondary channel. As the blockage intensifies, the filtration capacity of the conical filter plate 6 decreases. At this time, the secondary channel gradually becomes the main water passage path. Its dynamically narrowed aperture just matches the need for higher filtration precision as impurities increase, ensuring that the overall filtration effect does not decrease with the degree of blockage.

[0040] When it is necessary to clean the impurities inside the conical filter plate 6, the rotating component 7 drives the concave cylinder 9 to rotate. The two ends of the concave cylinder 9 move on the surface of the sealing plate 2 until both ends of the concave cylinder 9 coincide with the position of the first filter cylinder 3. At this time, the suction component 8 performs suction. Since there are a lot of impurities attached to the inner wall of the conical filter plate 6, the concave cylinder 9 and the conical filter plate 6 form a sealed state, so the suction area can be completely isolated from the external environment. At this time, the negative pressure generated by the suction component 8 can be applied to the inner side of the conical filter plate 6 and the inside of the first filter cylinder 3, ensuring sufficient power to pull the conical filter plate 6 down instantly, and maximizing the efficiency of impurity peeling and discharge.

[0041] The momentary downward movement of the conical filter plate 6 will drive the elastic element 5, causing the second filter cylinder 4 to return to its initial position, and the conical filter plate 6 will be stuck on the sealing plate 2. At this time, the first filter hole 10 and the second filter hole 20 will be reset to their maximum diameter, and the suction force can be better exerted. Since the conical filter plate 6 moves downward and forms a gap with the first filter cylinder 3, the suction force can carry out impurities, and the conical filter plate 6 can facilitate the removal of impurities from the inside of the first filter cylinder 3, thus improving the control and treatment effect of sewage.

[0042] like Figures 2-5 and Figure 8As shown, the filter tank 1 includes a tank body 11 and an inlet pipe 12 connected to the bottom of the tank body 11. An outlet pipe 13 is connected to one side of the tank body 11. Both the inlet pipe 12 and the outlet pipe 13 have flanges installed at one end, which can be used to connect external equipment. Four support legs 14 are fixedly installed at the bottom of the tank body 11. The four support legs 14 can support the tank body 11 and improve the stability of the tank body 11. The inlet pipe 12 is used to transport sewage into the interior of the tank body 11, and the outlet pipe 13 is used to discharge the filtered water.

[0043] The sealing plate 2 has four through holes 21. The first filter cylinder 3 is installed inside the through holes 21, with one end of the first filter cylinder 3 only halfway inside the through hole 21. A concave plate 22 is fixedly installed inside the through hole 21. A first L-shaped clamping plate 23 is inclinedly arranged inside the concave plate 22, with one end of the first L-shaped clamping plate 23 being an inclined surface. Rotating shafts 24 are fixedly installed on both sides of the first L-shaped clamping plate 23, which can be connected to facilitate the rotation of the first L-shaped clamping plate 23. Both rotating shafts 24 are rotatably connected to the concave plate 22. A torsion spring 25 is fixedly installed on the surface of the rotating shaft 24, and one end of the torsion spring 25 is fixedly connected to the concave plate 22. The torsion spring 25 can provide elastic force so that the first L-shaped card plate 23 can return to its initial position after rotation. An arc groove 26 is opened on one side of the concave plate 22. A connecting plate 27 is fixedly installed on the surface of the rotating shaft 24. A limit rod 28 is fixedly installed on one side of the connecting plate 27, and the limit rod 28 is slidably connected to the arc groove 26.

[0044] By moving the limiting rod 28 to one end of the arc groove 26, the rotating shaft 24 can be limited, so that the first L-shaped clamping plate 23 can only rotate within the arc groove 26, preventing the first L-shaped clamping plate 23 from rotating too much and causing connection failure. In the initial state, the concave cylinder 9 is not below the through hole 21. Therefore, when the concave cylinder 9 rotates, the first L-shaped clamping plate 23 will rotate until the concave cylinder 9 moves below the through hole 21. At this time, the elastic force of the torsion spring 25 makes the first L-shaped clamping plate 23 return to the initial position. When the concave cylinder 9 continues to rotate, it will push the first L-shaped clamping plate 23 to rotate again. Therefore, the rotation of the concave cylinder 9 can realize the rotation of the first L-shaped clamping plate 23, forming the function of locking and unlocking.

[0045] like Figure 4 and Figure 6 As shown, a cylinder 31 is fixedly installed inside the first filter cylinder 3, and a limit block 32 is correspondingly installed inside the cylinder 31. The cylinder 31 and the limit block 32 can play a limiting role, so that the elastic element 5 can only move up and down and will not rotate.

[0046] The second filter cartridge 4 has a fixed cartridge 41 installed inside. The fixed cartridge 41 is rotatably connected to the first filter cartridge 3. Several balls 42 are installed inside the fixed cartridge 41. The balls 42 can reduce friction.

[0047] The elastic element 5 includes a vertical rod 51 and a circular plate 52 fixed to one end of the vertical rod 51. The vertical rod 51 is slidably connected to the cylinder 31. A spring 53 is in contact with the surface of the vertical rod 51. One end of the spring 53 is fixedly connected to the first filter cylinder 3. The conical filter plate 6 is slidably connected to the vertical rod 51, and the other end of the spring 53 is fixedly connected to the conical filter plate 6. A screw 54 is fixedly installed at one end of the vertical rod 51, and the ball bearing 42 is in contact with the surface of the screw 54. A first sliding groove 55 is opened through the end of the vertical rod 51 near the circular plate 52. Second sliding grooves 56 are opened on both sides of the other end of the vertical rod 51. The limiting block 32 is slidably connected to the second sliding groove 56.

[0048] The limiting block 32 prevents the vertical rod 51 from rotating, allowing it to move only up and down. When the conical filter plate 6 moves upward, it first moves a certain distance. As the continuous thrust pushes the conical filter plate 6 upward, it pushes the vertical rod 51 and screw 54 upward, compressing the spring 53. Through the cooperation of the screw 54 and the ball bearing 42, the continuously moving screw 54 causes the fixed cylinder 41 to rotate, which in turn drives the second filter cylinder 4 to rotate, causing the first filter hole 10 and the second filter hole 20 to gradually misalign. When the conical filter plate 6 moves downward instantaneously, it pushes the vertical rod 51 downward, which in turn drives the screw 54 downward. Through the cooperation of the screw 54 and the ball bearing 42, the second filter cylinder 4 rotates. At this time, the first filter hole 10 and the second filter hole 20 return to their maximum diameter, allowing the suction force to be better utilized.

[0049] like Figure 3 and Figure 9 As shown, a crossbar 61 is fixedly installed inside the conical filter plate 6. The crossbar 61 is slidably connected to the vertical bar 51. A scraper 62 is fixedly installed inside the crossbar 61. The scraper 62 is slidably connected to the first chute 55. By moving the scraper 62 up and down, impurities on the inner wall of the first chute 55 can be scraped. Combined with the suction force, impurities attached to the inside of the first chute 55 can be better removed. A second L-shaped clamping plate 63 is fixedly installed at one end of the conical filter plate 6. The second L-shaped clamping plate 63 is designed with... As the concave cylinder 9 rotates, the first L-shaped clamping plate 23 will also rotate until the concave cylinder 9 moves below the through hole 21. At this time, the spring force of the torsion spring 25 causes the first L-shaped clamping plate 23 to return to its initial position. When the suction force causes the conical filter plate 6 to move downward instantly, the second L-shaped clamping plate 63 and the first L-shaped clamping plate 23 come into contact with each other, forming a clamping effect, which can fix the conical filter plate 6 and completely avoid the interference of the instantaneous reset of the spring force of the spring 53.

[0050] If there is no locking mechanism, the conical filter plate 6 may move upward due to the spring 53 rebound after some impurities are sucked out, causing the gap between it and the first filter cylinder 3 to suddenly close, interrupting the impurity discharge path, and even pressing the impurities that have not been completely sucked out back onto the surface of the conical filter plate 6. When the concave cylinder 9 continues to rotate, it will push the first L-shaped locking plate 23 to rotate again. At this time, the first L-shaped locking plate 23 separates from the second L-shaped locking plate 63. The spring force of the spring 53 makes the conical filter plate 6 return to the initial position. Therefore, the rotation of the concave cylinder 9 can realize the rotation of the first L-shaped locking plate 23, forming the locking and unlocking functions.

[0051] To address the technical problem of poor efficiency in impurity removal and discharge, such as Figure 3 As shown, the following preferred technical solutions are provided:

[0052] The rotating component 7 includes a fixed frame 71 and a motor 72 fixed inside the fixed frame 71. A rotating rod 73 is fixedly installed at the output end of the motor 72. A protrusion 74 is fixedly installed on the surface of the rotating rod 73. A support rod 75 is fixedly installed on one side of the concave cylinder 9, and the support rod 75 is rotatably connected to the tank body 11. The rotating rod 73 and the protrusion 74 are slidably connected to the support rod 75. The protrusion 74 can limit the connection between the rotating rod 73 and the support rod 75, so that the rotation of the rotating rod 73 can drive the support rod 75 to rotate. At the same time, it can facilitate the separation of the rotating rod 73 and the support rod 75. The motor 72 drives the rotating rod 73 to rotate, and the rotating rod 73 and the protrusion 74 can drive the support rod 75 to rotate. The rotation of the support rod 75 can drive the concave cylinder 9 to rotate.

[0053] The suction component 8 includes an L-shaped tube 81 and a one-way valve 82 installed on the L-shaped tube 81. The L-shaped tube 81 is connected to one end of the tank body 11, and the concave cylinder 9 is rotatably connected to the L-shaped tube 81. A suction pump 83 is fixedly installed at the other end of the L-shaped tube 81, and a discharge pipe 84 is installed at one end of the suction pump 83. Impurities can be suctioned by the cooperation of the suction pump 83, the L-shaped tube 81 and the concave cylinder 9. The suction force can carry out the impurities and discharge them through the discharge pipe 84. The negative pressure generated by the suction pump 83 can maximize the efficiency of separating and discharging impurities.

[0054] Sealing rings 91 are installed at both ends of the concave cylinder 9. The sealing rings 91 can improve the sealing between the two ends of the concave cylinder 9 and the through hole 21, and prevent air leakage during suction.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A municipal engineering sewage filtration device, comprising a filter tank (1), characterized in that: The filter tank (1) is fixedly installed with a sealing plate (2). Several first filter cylinders (3) are installed through the surface of the sealing plate (2). Second filter cylinders (4) are rotatably connected to the surface of the first filter cylinders (3). An elastic element (5) is provided inside the first filter cylinder (3), and the elastic element (5) is connected to the second filter cylinder (4) in a transmission manner. A conical filter plate (6) is provided on the surface of the elastic element (5). The conical filter plate (6) is slidably connected to the inner wall of the first filter cylinder (3), and the conical filter plate (6) is slidably engaged with the sealing plate (2). (1) An internal rotating part (7) is provided, and one end of the rotating part (7) is connected through to one side of the sealing plate (2). A suction part (8) is provided at one end of the filter tank (1). A concave cylinder (9) is rotatably connected at one end of the suction part (8). Both ends of the concave cylinder (9) are in contact with the sealing plate (2). One end of the rotating part (7) is fixedly connected to the concave cylinder (9). A number of first filter holes (10) are opened through the surface of the first filter cylinder (3). A second filter hole (20) corresponding to the first filter hole (10) is opened through the surface of the second filter cylinder (4).

2. A municipal engineering sewage filtration device according to claim 1, characterized in that: The filter tank (1) includes a tank body (11) and an inlet pipe (12) connected to the bottom of the tank body (11). An outlet pipe (13) is connected to one side of the tank body (11), and four support legs (14) are fixedly installed at the bottom of the tank body (11).

3. A municipal engineering sewage filtration device according to claim 1, characterized in that: The sealing plate (2) has four through holes (21) through its surface. The first filter cylinder (3) is installed inside the through holes (21). A concave plate (22) is fixedly installed inside the through holes (21). A first L-shaped clamping plate (23) is inclinedly arranged inside the concave plate (22). A rotating shaft (24) is fixedly installed on both sides of the first L-shaped clamping plate (23). Both rotating shafts (24) are rotatably connected to the concave plate (22). A torsion spring (25) is fixedly installed on the surface of the rotating shaft (24). One end of the torsion spring (25) is fixedly connected to the concave plate (22). An arc groove (26) is opened on one side of the concave plate (22). A connecting plate (27) is fixedly installed on the surface of the rotating shaft (24). A limit rod (28) is fixedly installed on one side of the connecting plate (27). The limit rod (28) is slidably connected to the arc groove (26).

4. A municipal engineering sewage filtration device according to claim 1, characterized in that: A cylinder (31) is fixedly installed inside the first filter cylinder (3), and a limit block (32) is correspondingly installed inside the cylinder (31).

5. A municipal engineering sewage filtration device according to claim 4, characterized in that: The second filter cylinder (4) has a fixed cylinder (41) installed inside. The fixed cylinder (41) is rotatably connected to the first filter cylinder (3). Several ball bearings (42) are installed inside the fixed cylinder (41).

6. A municipal engineering sewage filtration device according to claim 5, characterized in that: The elastic element (5) includes a vertical rod (51) and a circular plate (52) fixed to one end of the vertical rod (51). The vertical rod (51) is slidably connected to the cylinder (31). A spring (53) is in contact with the surface of the vertical rod (51). One end of the spring (53) is fixedly connected to the first filter cylinder (3). The conical filter plate (6) is slidably connected to the vertical rod (51), and the other end of the spring (53) is fixedly connected to the conical filter plate (6). A screw (54) is fixedly installed at one end of the vertical rod (51), and a ball (42) is in contact with the surface of the screw (54). A first sliding groove (55) is opened through the end of the vertical rod (51) near the circular plate (52). A second sliding groove (56) is opened on both sides of the other end of the vertical rod (51). The limiting block (32) is slidably connected to the second sliding groove (56).

7. A municipal engineering sewage filtration device according to claim 6, characterized in that: A crossbar (61) is fixedly installed inside the conical filter plate (6). The crossbar (61) is slidably connected to the vertical bar (51). A scraper (62) is fixedly installed inside the crossbar (61). The scraper (62) is slidably connected to the first sliding groove (55). A second L-shaped clamping plate (63) is fixedly installed at one end of the conical filter plate (6).

8. A municipal engineering sewage filtration device according to claim 2, characterized in that: The rotating component (7) includes a fixed frame (71) and a motor (72) fixed inside the fixed frame (71). A rotating rod (73) is fixedly installed at the output end of the motor (72). A protrusion (74) is fixedly installed on the surface of the rotating rod (73). A support rod (75) is fixedly installed on one side of the concave cylinder (9), and the support rod (75) is rotatably connected to the tank body (11). The rotating rod (73) and the protrusion (74) are both slidably connected to the support rod (75).

9. A municipal engineering sewage filtration device according to claim 8, characterized in that: The suction component (8) includes an L-shaped tube (81) and a one-way valve (82) installed on the L-shaped tube (81). The L-shaped tube (81) is connected through one end of the tank body (11), and the concave cylinder (9) is rotatably connected to the L-shaped tube (81). A suction pump (83) is fixedly installed at the other end of the L-shaped tube (81), and a discharge pipe (84) is installed at one end of the suction pump (83).

10. A municipal engineering sewage filtration device according to claim 1, characterized in that: The concave cylinder (9) is fitted with sealing rings (91) at both ends.

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