Urban sewage filtering and purifying equipment

Abstract

The invention discloses urban sewage filtering and purifying equipment, and mainly relates to the technical field of sewage treatment. Comprising a first outlet communicated with the first mixing chamber and the first precipitation chamber, a second outlet communicated with the second mixing chamber and the second precipitation chamber is formed in the third partition plate, a first spiral plate and a second spiral plate are arranged in the first mixing chamber and the second mixing chamber respectively, and L-shaped blocks are arranged at the first outlet and the second outlet respectively. A first overflow port and a second overflow port are respectively formed between the L-shaped block and the second partition plate and between the L-shaped block and the third partition plate, the first overflow port and the second overflow port are respectively communicated with the first outlet and the second outlet, recovery boxes are arranged at the bottoms of the first precipitation chamber and the second precipitation chamber, and an overflow chamber is arranged at the top of the tank body. The filter has the beneficial effects that the problem that when colloids and fine suspended solids in filtered water are condensed into large-particle impurities, the large-particle impurities easily block filter holes is solved, and the efficiency of filtering the large-particle impurities in sewage is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to urban sewage filtering and purification equipment. Background Art

[0002] Urban sewage mainly includes domestic sewage, industrial sewage and runoff sewage. With the advancement of science and technology and the rapid development of industry, the incidental sewage is also increasing. Cities are densely populated places, and urban sewage contains a large number of pathogens. If sewage is not planned and effectively treated, it will cause great pollution to the environment and affect the health of residents.

[0003] Existing urban sewage treatment equipment generally adds flocculants to sewage to make the colloids and fine suspended matter in the water condense into large particles of impurities, which are then removed through sedimentation and filter screens. However, when using filter screens to filter out the condensed large particles of impurities, the large particles will clog the filter pores of the filter screen, affecting the efficiency of filtering impurities in the water. Summary of the invention

[0004] The purpose of the present invention is to provide a municipal sewage filtering and purification device to solve the problem that when colloids and fine suspended matter in filtered water agglomerate into large particle impurities, the large particle impurities are easy to block the filter holes, thereby improving the efficiency of filtering large particle impurities in sewage.

[0005] In order to achieve the above-mentioned purpose, the invention is implemented through the following technical solutions: A municipal sewage filtering and purification device comprises a tank body, and a water inlet and a water outlet arranged at the bottom and the top of the tank body, wherein the tank body is provided with a first partition plate, a second partition plate and a third partition plate, wherein the first partition plate divides the tank body into a first filtering area and a second filtering area, the second partition plate divides the first filtering area into a first mixing chamber and a first sedimentation chamber, the third partition plate divides the second filtering area into a second mixing chamber and a second sedimentation chamber, and the bottoms of the first mixing chamber and the second mixing chamber are provided with flocculant delivery pipes; The second partition is provided with a first outlet communicating with the first mixing chamber and the first sedimentation chamber, the third partition is provided with a second outlet communicating with the second mixing chamber and the second sedimentation chamber, the first mixing chamber and the second mixing chamber are respectively provided with a first spiral plate and a second spiral plate used in conjunction with the first outlet and the second outlet, the first outlet and the second outlet are respectively provided with an L-shaped block, a first overflow port and a second overflow port are respectively formed between the L-shaped block and the second partition and the third partition, the first overflow port and the second overflow port are respectively communicated with the first outlet and the second outlet, and the bottom of the first sedimentation chamber and the second sedimentation chamber are both provided with a recovery box; The bottom of the first partition is provided with a through hole connected to the first sedimentation chamber and the second mixing chamber, the top of the tank body is provided with an overflow chamber connected to the water outlet, and a first through hole, a second through hole and a third through hole connecting the overflow chamber with the first mixing chamber, the overflow chamber with the second mixing chamber, and the overflow chamber with the second sedimentation chamber.

[0006] Furthermore, the L-shaped block includes a horizontal plate and a swing plate rotatably arranged on the horizontal plate, the second partition plate and the third partition plate are respectively slidably connected with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are respectively provided with a fourth through hole and a fifth through hole, the first outlet and the fourth through hole, and the second outlet and the fifth through hole are interconnected to form a first filter hole and a second filter hole.

[0007] Furthermore, a plurality of first driving rods and second driving rods are slidably connected to the tank body, and the ends of the first driving rod and the second driving rod are respectively rotatably connected to the first connecting rod and the second connecting rod, and the ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the first baffle and the second baffle, and the first baffle and the second baffle are both rotatably connected to the third connecting rod, and the third connecting rod is rotatably connected to the swing plate.

[0008] Furthermore, a plurality of convex rings are provided on the top of the tank body, and a cone ring is slidably connected to the convex ring. Sealing strips are provided between the cone ring and the first driving rod and the second driving rod. A fixing block is threadedly connected to the convex ring, and the end of the fixing block is provided with a conical surface in contact with the cone ring.

[0009] Furthermore, the fixed blocks located on the first driving rod and the second driving rod are respectively provided with a first gear and a second gear, and the tank body is provided with a plurality of rotating shafts, one of which is threadedly connected with a first turntable, and the remaining rotating shafts are respectively threadedly connected with a second turntable, the first turntable is provided with a third gear that is simultaneously meshed with a plurality of first gears, and the second turntable is provided with a fourth gear that is simultaneously meshed with adjacent first and second gears, and the pitches provided on the rotating shaft and the convex ring are equal.

[0010] Furthermore, an arc block is provided on the third gear, and a plurality of limit grooves are provided on the arc block. A driving wheel is rotatably connected to the tank body, and a limit block in contact with the limit groove is provided on one side of the driving wheel, and a cam meshing with the third gear is provided on the other side of the driving wheel.

[0011] Furthermore, a connecting flange and a flange cover detachably connected to the connecting flange are provided at the end of the recycling box, a protrusion is provided on the connecting flange, and the flange cover is provided with a groove slidably connected to the protrusion, and a first sealing ring and a second sealing ring are respectively provided between the protrusion and the flange cover, and between the groove and the connecting flange.

[0012] Furthermore, the flange cover is provided with a guide hole, the connecting flange is provided with a guide block slidably connected to the guide hole, the end of the guide block passes through the guide hole and is slidably connected to a T-shaped block, the T-shaped block is provided with a first inclined surface in contact with the flange cover, and the guide block is slidably connected to a locking block for driving the T-shaped block to move.

[0013] Furthermore, the end of the locking block is provided with a second inclined surface in contact with the T-shaped block, a first spring is provided between the two T-shaped blocks, a ball is slidably connected to the locking block, a groove in contact with the ball is provided on the guide block, and a second spring is provided between the ball and the locking block.

[0014] Furthermore, an inclined plate is provided on the top of the recycling box, a gap is provided between the inclined plate and the recycling box, a plurality of sixth through holes are provided on the inclined plate, the L-shaped block is inverted, and the second partition plate and the third partition plate are inclined.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When sewage needs to be treated, the sewage is introduced into the first mixing chamber at the bottom of the tank through the water inlet, and the flocculant is introduced into the first mixing chamber through the delivery pipe to mix with the sewage. At the same time, the sewage is guided by the first spiral plate in the first mixing chamber so that the sewage no longer flows in a straight line but forms a spiral path, which greatly increases the disturbance degree of the fluid and makes the mixing between the fluids more complete. In addition, the first spiral plate can extend the flow of sewage in the first spiral plate, allowing the sewage to fully contact with the flocculant, so that the colloids and fine suspended matter in the water are completely condensed into large particles of impurities, which is convenient for removing impurities in the sewage and improving the effect of sewage treatment. In addition, when sewage and flocculant are mixed to produce precipitation reaction, sewage and condensed large particles of impurities are guided on the first spiral plate, and when they spirally rise in the first mixing chamber, the condensed large particles of impurities and sewage are subjected to different centrifugal forces due to their different densities, so that the condensed large particles of impurities are thrown onto the second partition, and flow out from the first overflow port through a plurality of first outlets provided on the second partition, thereby achieving separation of water and condensed large particles of impurities. In addition, the impulse generated by the spiral process of the water flow will take away the large particles of impurities that have stayed on the second partition for a long time, avoiding the large particles of impurities from clogging the first outlet, thereby improving the efficiency of filtering large particles of impurities in sewage; 2. After the sewage with large particles of impurities flows into the first sedimentation chamber, the large particles of impurities gradually settle to the bottom under the action of gravity and enter the recovery box, while the sewage passes through the through holes provided on the first partition, so that the sewage containing a small amount of impurities enters the second mixing chamber from the first sedimentation chamber, and through the diversion of the second spiral plate, the large particles of impurities are further separated from the water flow, and flow through the second outlet and the second overflow port into the second sedimentation chamber. Then, under the action of gravity, the large particles of impurities settle at the bottom of the second sedimentation chamber and enter the recovery box, thereby performing secondary filtration treatment on the sewage and improving the effect of sewage treatment; Finally, the clean water after the large particles of impurities are removed gradually rises, and flows into the overflow chamber provided on the top of the tank body through the first through hole, the second through hole, and the third through hole respectively, and is discharged from the water outlet, thereby removing the large particles of impurities in the sewage. At the same time, the first through hole, the second through hole, and the third through hole are directly smaller than the large particles of impurities, so as to prevent them from entering the overflow chamber; 3. Since different flocculants need to be added for different sewage treatments, the outer diameters of the large impurities formed are also different. When the outer diameter of the large impurities changes, it is necessary to adjust the sizes of the first filter hole, the second filter hole, the first overflow port and the second overflow port so that the large impurities can flow smoothly from the first mixing chamber into the first sedimentation chamber or from the second mixing chamber into the second mixing chamber, and at the same time avoid a large amount of separated clean water from entering the subsequent chamber, thereby improving the efficiency of removing large impurities in sewage; 4. When the size of the first outlet, the second outlet, the first overflow port and the second overflow port needs to be adjusted, the driving wheel is turned on the tank body, and the third gear is driven to rotate on the tank body through the cooperation among the driving wheel, the limit block, the limit groove, the cam and the third gear. Since the third gear is meshed with several first gears at the same time, it will drive several first gears to rotate on the tank body. In addition, since the fourth gear is meshed with the adjacent first gear and the second gear at the same time, it will drive several second gears to rotate on the tank body, and then drive the fixing blocks located on the first driving rod and the second driving rod to move up and down respectively, and release the fixing blocks applied on the first driving rod and the second driving rod. The force on the cone ring makes the sealing strip provided between the cone ring and the first driving rod or the second driving rod in a loose state, which is convenient for the subsequent adjustment of the positions of the first driving rod and the second driving rod, and at the same time avoids excessive wear of the first driving rod or the second driving rod and the sealing strip when adjusting the position of the first driving rod or the second driving rod, resulting in damage to the sealing effect of the subsequent sealing strip, preventing subsequent water flow from flowing out of the gap of the first driving rod or the second driving rod, and at the same time improving the overall sealing of the tank body, preventing external dust from entering the overflow chamber, causing the clean water from which large particles of impurities are removed to be contaminated again, thereby improving the effect of sewage treatment; In addition, since the fixed block is threadedly connected to the corresponding convex ring, the first rotating disk and the second rotating disk are respectively threadedly connected to the corresponding rotating shaft, and the pitches of the convex ring and the rotating shaft are equal, the first gear, the second gear, the third gear and the fourth gear move up and down at the same time, so that in the process of moving the fixed block, the first gear, the second gear, the third gear and the fourth gear are always in a meshing state, thereby improving the stability of the overall structure, reducing the number of maintenance times, and improving the efficiency of sewage treatment; 5. When the sealing strip is loosened, the first driving rod or the second driving rod is moved up and down on the tube body, and the first connecting rod or the second connecting rod is cooperated to transmit the component force, so as to drive the first baffle or the second baffle to move on the second partition or the third partition, thereby changing the size of the first filter hole and the second filter hole. At the same time, since the third connecting rod provided on the first baffle or the second baffle is rotatably connected with the swing plate, the swing plate will be driven to rotate on the cross plate, thereby changing the size of the first overflow port and the second overflow port, so that large particle impurities of different particle sizes can flow smoothly from the first mixing chamber into the first sedimentation chamber or from the second mixing chamber into the second mixing chamber, and at the same time, a large amount of separated clean water is prevented from entering the subsequent chamber, thereby improving the efficiency of removing large particle impurities in sewage. In addition, there is no need to set up a separate power device to drive them separately, reducing the space required for the installation of the power device and the cost required for manufacturing; After the position of the first driving rod or the second driving rod is adjusted, the driving wheel drives the fixing block provided on the first driving rod and the second driving rod to move downward, and the fixing block, the conical surface and the conical ring cooperate to drive the conical ring to move downward on the convex ring, compressing the sealing strip provided between the conical ring and the first driving rod or the second driving rod, so that the sealing strip is in a tight state, filling the gap between the first driving rod or the second driving rod and the tank body, further improving the sealing of the tank body, preventing external dust from entering the overflow chamber, causing the clean water from which the large particles of impurities are removed to be contaminated again, thereby improving the effect of sewage treatment; In addition, each time the third gear is driven to rotate a certain angle, the limit block provided on one side of the driving wheel will re-enter the limit groove. At the same time, the resistance generated by the contact between the limit block and the limit groove will limit the rotation of the third gear on the tank body, thereby preventing the external force from accidentally driving the third gear to rotate and affecting the sealing effect of the sealing strip on the gap between the first driving rod or the second driving rod and the tank body, thereby further improving the sealing performance of the tank body and preventing external dust from entering the overflow chamber, causing the clean water that has been used to remove large particles of impurities to be contaminated again, thereby improving the effect of sewage treatment; 6. When the flange cover needs to be connected to the connecting flange, press the locking block, and push the flange cover toward the connecting flange through the cooperation among the guide block, the locking block, the second inclined surface, the T-shaped block, the first inclined surface, and the flange cover, and further compress the first sealing ring and the second sealing ring provided between the flange cover and the connecting flange, so as to strengthen the double sealing between the flange cover and the connecting flange, and prevent the sewage from being discharged from between the flange cover and the connecting flange during the sewage treatment process, thereby improving the efficiency of sewage treatment; Finally, the balls on both sides of the locking block slide into the corresponding grooves, and the resistance generated by the contact between the balls and the grooves, combined with the rebound force generated by the compression of the second spring, prevents the locking block from moving on the guide block, thereby preventing the locking block from being accidentally moved by external forces during sewage treatment, thereby affecting the stability of the overall structure. In addition, there is no need to tighten several fixing bolts, only the locking block needs to be moved to achieve the connection between the flange cover and the connecting flange, which simplifies the operating steps of connecting the flange cover and the connecting flange to a certain extent, further improving the efficiency of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the structure inside the tank body of the present invention.

[0017] Attached Figure 2 It is a structural schematic diagram of the swing plate of the present invention.

[0018] Attached Figure 3 It is a structural schematic diagram of the third gear of the present invention.

[0019] Attached Figure 4 It is a structural schematic diagram of the cone ring of the present invention.

[0020] Attached Figure 5 The present invention is attached Figure 3 A partial enlarged view of area B in the middle.

[0021] Attached Figure 6 It is a structural schematic diagram of the flange cover of the present invention.

[0022] Attached Figure 7 The present invention is attached Figure 6 A partial enlarged view of area C in the middle.

[0023] Attached Figure 8 The present invention is attached Figure 1 A partial enlarged view of area A in the middle.

[0024] Numbers shown in the accompanying drawings: 1. Water inlet; 2. Water outlet; 3. First baffle; 4. Second baffle; 5. Third baffle; 6. First mixing chamber; 7. First sedimentation chamber; 8. Second mixing chamber; 9. Second sedimentation chamber; 10. Flocculant delivery pipe; 11. First outlet; 12. Second outlet; 13. First spiral plate; 14. Second spiral plate; 15. L-shaped block; 16. First overflow port; 17. Second overflow port; 18. Recovery box; 19. Through hole; 20. Overflow chamber; 21. First through hole; 22. Second through hole; 23. Third through hole; 24, horizontal plate; 25, swing plate; 26, first baffle plate; 27, second baffle plate; 28, fourth through hole; 29, fifth through hole; 30, first driving rod; 31, second driving rod; 32, first connecting rod; 33, second connecting rod; 34, third connecting rod; 35. convex ring; 36. cone ring; 37. sealing strip; 38. fixing block; 39. cone surface; 40. first gear; 41. second gear; 42. rotating shaft; 43. first rotating disk; 44. second rotating disk; 45. third gear; 46. fourth gear; 47. arc block; 48. limiting groove; 49. driving wheel; 50. limiting block; 51. cam; 52. Connecting flange; 53. Flange cover; 54. Protrusion; 55. Groove; 56. First sealing ring; 57. Second sealing ring; 58. Guide hole; 59. Guide block; 60. T-shaped block; 61. First inclined surface; 62. Locking block; 63. Second inclined surface; 64. First spring; 65. Ball; 66. Groove; 67. Second spring; 68. Inclined plate; 69. Sixth through hole. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0026] The present invention provides a municipal sewage filtering and purification device, such as Figure 1 and Figure 2 As shown, it includes a tank body, and a water inlet 1 and a water outlet 2 arranged at the bottom and the top of the tank body, and a first partition 3, a second partition 4 and a third partition 5 are arranged in the tank body, the first partition 3 divides the tank body into a first filter area and a second filter area, the second partition 4 divides the first filter area into a first mixing chamber 6 and a first sedimentation chamber 7, and the third partition 5 divides the second filter area into a second mixing chamber 8 and a second sedimentation chamber 9, so as to perform secondary filtration treatment on sewage and improve the effect of sewage treatment; The bottom of the first mixing chamber 6 and the second mixing chamber 8 is provided with a flocculant delivery pipe 10, specifically an annular pipe, on which a plurality of third outlets are provided, so that the flocculant is evenly delivered into the first mixing chamber 6 and the second mixing chamber 8, and fully mixed with the sewage, thereby further improving the sewage treatment effect; The second partition plate 4 is provided with a first outlet 11 communicating with the first mixing chamber 6 and the first sedimentation chamber 7, the third partition plate 5 is provided with a second outlet 12 communicating with the second mixing chamber 8 and the second sedimentation chamber 9, the first mixing chamber 6 and the second mixing chamber 8 are respectively provided with a first spiral plate 13 and a second spiral plate 14 used in conjunction with the first outlet 11 and the second outlet 12, an L-shaped block 15 is respectively provided at the first outlet 11 and the second outlet 12, a first overflow port 16 and a second overflow port 17 are respectively formed between the L-shaped block 15 and the second partition plate 4 and the third partition plate 5, the first overflow port 16 and the second overflow port 17 are respectively connected with the first outlet 11 and the second outlet 12, a recovery box 18 is provided at the bottom of the first sedimentation chamber 7 and the second sedimentation chamber 9, through the diversion of the first spiral plate 13 in the first mixing chamber 6, the sewage no longer flows in a straight line, but forms a spiral path, which greatly increases the degree of disturbance of the fluid and makes the fluid The mixing between the two is more complete; in addition, the first spiral plate 13 can prolong the flow of sewage in the first spiral plate 13, so that the sewage can fully contact with the flocculant, so that the colloids and fine suspended matter in the water can be completely condensed into large particles of impurities, which is convenient for removing impurities in the sewage and improving the effect of sewage treatment; in addition, when the sewage and the flocculant are mixed and precipitated, the sewage and the condensed large particles of impurities are diverted through the first spiral plate 13, and when the sewage rises in the first mixing chamber 6 in a spiral, the condensed large particles of impurities and the sewage are subjected to different centrifugal forces due to their different densities, so that the condensed large particles of impurities are thrown onto the second partition plate 4, and pass through a plurality of first outlets 11 provided on the second partition plate 4, and flow out from the first overflow port 16, so as to separate the water and the condensed large particles of impurities. In addition, the impulse generated by the spiral process of the water flow will take away the large particles of impurities that have stayed on the second partition plate 4 for a long time, so as to avoid the large particles of impurities blocking the first outlet 11, thereby improving the efficiency of filtering the large particles of impurities in the sewage; After the sewage with large particles of impurities flows into the first sedimentation chamber 7, the large particles of impurities gradually settle to the bottom under the action of gravity and enter the recovery box 18, while the sewage passes through the through hole 19 provided on the first partition plate 3, so that the sewage containing a small amount of impurities enters the second mixing chamber 8 from the first sedimentation chamber 7, and the large particles of impurities are further separated from the water flow through the diversion of the second spiral plate 14, and flow through the second outlet 12 and the second overflow port 17 into the second sedimentation chamber 9. Then, under the action of gravity, the large particles of impurities are settled at the bottom of the second sedimentation chamber 9 and enter the recovery box 18, thereby performing secondary filtration treatment on the sewage and improving the effect of sewage treatment; The bottom of the first partition plate 3 is provided with a through hole 19 connected to the first sedimentation chamber 7 and the second mixing chamber 8, so that the sewage containing a small amount of impurities enters the second mixing chamber 8, and the sewage is subjected to secondary treatment, thereby improving the effect of sewage treatment; The top of the tank body is provided with an overflow chamber 20 connected to the water outlet 2, as well as a first through hole 21, a second through hole 22 and a third through hole 23 connecting the overflow chamber 20 with the first mixing chamber 6, the overflow chamber 20 with the second mixing chamber 8, and the overflow chamber 20 with the second sedimentation chamber 9. Finally, the clean water after removing the large particles of impurities gradually rises, and flows into the overflow chamber 20 provided on the top of the tank body through the first through hole 21, the second through hole 22 and the third through hole 23 respectively, and is discharged from the water outlet 2, thereby removing the large particles of impurities in the sewage. At the same time, the first through hole 21, the second through hole 22 and the third through hole 23 are directly smaller than the large particles of impurities, so as to prevent them from entering the overflow chamber 20.

[0027] Preferably, Figure 1 and Figure 2As shown, the L-shaped block 15 includes a transverse plate 24, and a swing plate 25 rotatably arranged on the transverse plate 24, the second baffle plate 4 and the third baffle plate 5 are respectively slidably connected with a first baffle plate 26 and a second baffle plate 27, the first baffle plate 26 and the second baffle plate 27 are respectively provided with a fourth through hole 28 and a fifth through hole 29, the first outlet 11 and the fourth through hole 28, and the second outlet 12 and the fifth through hole 29 are interconnected to form a first filter hole and a second filter hole, a plurality of first driving rods 30 and a second driving rod 31 are slidably connected to the tank body, the ends of the first driving rod 30 and the second driving rod 31 are respectively rotatably connected with a first connecting rod 32 and a second connecting rod 33, the ends of the first connecting rod 32 and the second connecting rod 33 are respectively rotatably connected with the first baffle plate 26 and the second baffle plate 27, the first baffle plate 26 and the second baffle plate 27 are both rotatably connected with a third connecting rod 34, and the third connecting rod 34 is respectively connected to the swing plate 25 The rotation connection is achieved by moving the first driving rod 30 or the second driving rod 31 up and down on the tube body, cooperating with the first connecting rod 32 or the second connecting rod 33 to transmit the component force, driving the first baffle 26 or the second baffle 27 to move on the second partition 4 or the third partition 5, thereby changing the size of the first filter hole and the second filter hole. At the same time, since the third connecting rod 34 provided on the first baffle 26 or the second baffle 27 is rotationally connected to the swing plate 25, it will drive the swing plate 25 to rotate on the cross plate 24, thereby changing the size of the first overflow port 16 and the second overflow port 17, so that large particle impurities of different particle sizes can flow smoothly from the first mixing chamber 6 to the first sedimentation chamber 7 or from the second mixing chamber 8 to the second mixing chamber 8, and at the same time avoid a large amount of separated clean water from entering the subsequent chamber, thereby improving the efficiency of removing large particle impurities in sewage. In addition, there is no need to set up a separate power device to drive them separately, reducing the space required for the installation of the power device and the cost required for manufacturing.

[0028] Preferably, Figure 3 and Figure 4As shown, a plurality of convex rings 35 are provided at the top of the tank body, and a cone ring 36 is slidably connected to the convex ring 35. A sealing strip 37 is provided between the cone ring 36 and the first driving rod 30 and the second driving rod 31. A fixing block 38 is threadedly connected to the convex ring 35, and a conical surface 39 in contact with the cone ring 36 is provided at the end of the fixing block 38. After adjusting the position of the first driving rod 30 or the second driving rod 31, the driving wheel 49 is rotated in the opposite direction, and the fixing blocks 38 provided on the first driving rod 30 and the second driving rod 31 are driven to move downward in the same way. The conical surface 39 provided on the fixing block 38 contacts the conical ring 36, and the component force generated drives the conical ring 36 to move downward on the convex ring 35, compressing the sealing strip 37 provided between the conical ring 36 and the first driving rod 30 or the second driving rod 31, so that the sealing strip 37 is in a tight state, filling the gap between the first driving rod 30 or the second driving rod 31 and the tank body, further improving the sealing of the tank body, preventing external dust from entering the overflow chamber 20, causing the clean water from which the large particles of impurities are removed to be contaminated again, thereby improving the effect of sewage treatment.

[0029] Preferably, Figure 3 and Figure 4As shown, the fixing block 38 located on the first driving rod 30 and the second driving rod 31 is respectively provided with a first gear 40 and a second gear 41, and the tank body is provided with a plurality of rotating shafts 42, one of which is threadedly connected to a first rotating disk 43, and the remaining rotating shafts 42 are respectively threadedly connected to second rotating disks 44, the first rotating disk 43 is provided with a third gear 45 that meshes with a plurality of first gears 40 at the same time, and the second rotating disk 44 is provided with a fourth gear 46 that meshes with the adjacent first gears 40 and second gears 41 at the same time, and the rotating shaft 42 and the convex ring 35 are provided with a plurality of rotating shafts 42 and a plurality of rotating shafts 42. The pitches of the threads are equal. When the third gear 45 is driven to rotate on the tank body, the third gear 45 is meshed with the plurality of first gears 40 at the same time, which drives the plurality of first gears 40 to rotate on the tank body. In addition, the fourth gear 46 is meshed with the adjacent first gears 40 and second gears 41 at the same time, which drives the plurality of second gears 41 to rotate on the tank body, and then drives the fixing blocks 38 located on the first driving rod 30 and the second driving rod 31 to move up and down respectively, releases the force applied by the fixing blocks 38 on the cone ring 36, so that the cone ring 36 is aligned with the first driving rod 30 or the second driving rod 31. The sealing strip 37 provided between the moving rods 31 is in a loose state, which is convenient for the subsequent adjustment of the positions of the first driving rod 30 and the second driving rod 31, and at the same time, it is avoided that when the position of the first driving rod 30 or the second driving rod 31 is adjusted, the first driving rod 30 or the second driving rod 31 and the sealing strip 37 are excessively worn, resulting in the subsequent sealing effect of the sealing strip 37 being damaged, preventing the subsequent water flow from flowing out of the gap of the first driving rod 30 or the second driving rod 31, and at the same time improving the overall sealing of the tank body, preventing external dust from entering the overflow chamber 20, causing the clean water for removing large particles of impurities to be contaminated again, thereby improving Effect of treating sewage; in addition, since the fixed block 38 is threadedly connected to the corresponding convex ring 35, the first turntable 43 and the second turntable 44 are respectively threadedly connected to the corresponding rotating shaft 42, and the pitches on the convex ring 35 and the rotating shaft 42 are equal, the first gear 40, the second gear 41, the third gear 45 and the fourth gear 46 move up and down at the same time, so that in the process of moving the fixed block 38, the first gear 40, the second gear 41, the third gear 45 and the fourth gear 46 are always in a meshing state, thereby improving the stability of the overall structure, reducing the number of maintenance times, and improving the efficiency of treating sewage.

[0030] Preferably, Figure 3 and Figure 5As shown, the third gear 45 is provided with an arc block 47, and the arc block 47 is provided with a plurality of limit grooves 48. The tank body is rotatably connected with a driving wheel 49, and one side of the driving wheel 49 is provided with a limit block 50 in contact with the limit groove 48, and the other side of the driving wheel 49 is provided with a cam 51 meshing with the third gear 45. By toggling the driving wheel 49, the cam 51 provided on the other side of the driving wheel 49 is meshed with the third gear 45, which will drive the third gear 45 to rotate on the tank body, thereby changing the state of the sealing strip 37, and avoiding the first driving rod 30 or the second driving rod 31 from being in contact with the sealing strip 37 when the first driving rod 30 or the second driving rod 31 is moved. Excessive wear will affect the subsequent sealing effect; in addition, each time the third gear 45 is driven to rotate a certain angle, the limit block 50 provided on one side of the driving wheel 49 will re-enter the limit groove 48. At the same time, the resistance generated by the contact between the limit block 50 and the limit groove 48 will limit the rotation of the third gear 45 on the tank body, thereby preventing external force from accidentally driving the third gear 45 to rotate, affecting the sealing effect of the sealing strip 37 on the gap between the first driving rod 30 or the second driving rod 31 and the tank body, thereby further improving the sealing of the tank body, preventing external dust from entering the overflow chamber 20, causing the clean water that has been removed from large particles of impurities to be contaminated again, thereby improving the effect of sewage treatment.

[0031] Preferably, Figure 1 and Figure 6 As shown, a connecting flange 52 and a flange cover 53 detachably connected to the connecting flange 52 are provided at the end of the recycling box 18, so that the flange cover 53 can be removed from the connecting flange 52, which is convenient for clearing large particles of impurities in the recycling box 18, thereby improving the efficiency of sewage treatment; a protrusion 54 is provided on the connecting flange 52, and the flange cover 53 is provided with a groove 55 slidably connected to the protrusion 54, which guides the connection between the connecting flange 52 and the flange cover 53 and improves the stability of the overall connection; a first sealing ring 56 and a second sealing ring 57 are respectively provided between the protrusion 54 and the flange cover 53, and between the groove 55 and the connecting flange 52, to achieve double sealing between the flange cover 53 and the connecting flange 52, thereby preventing a large amount of sewage from being discharged from between the flange cover 53 and the connecting flange 52 during sewage treatment, thereby improving the efficiency of sewage treatment.

[0032] Preferably, Figure 6As shown, the flange cover 53 is provided with a guide hole 58, and the connecting flange 52 is provided with a guide block 59 slidably connected to the guide hole 58. The end of the guide block 59 passes through the guide hole 58 and is slidably connected to a T-shaped block 60. The T-shaped block 60 is provided with a first inclined surface 61 in contact with the flange cover 53. The guide block 59 is slidably connected to a locking block 62 for driving the T-shaped block 60 to move. When the guide block 59 passes through the guide hole 58, the T-shaped block 60 is driven to move on the guide block 59 through the locking block 62, so that the first inclined surface 61 provided at the end of the T-shaped block 60 is brought into contact with the flange cover 53. The component force generated after the contact further pushes the flange cover 53 to approach the connecting flange 52, further compresses the first sealing ring 56 and the second sealing ring 57 provided between the flange cover 53 and the connecting flange 52, strengthens the double sealing between the flange cover 53 and the connecting flange 52, and prevents the sewage from being discharged from between the flange cover 53 and the connecting flange 52 during the sewage treatment process, thereby improving the efficiency of sewage treatment.

[0033] Preferably, Figure 6 and Figure 7 As shown, the end of the locking block 62 is provided with a second inclined surface 63 in contact with the T-shaped block 60, and a first spring 64 is provided between the two T-shaped blocks 60 for resetting the T-shaped block 60, thereby releasing the connection between the flange cover 53 and the connecting flange 52, which is convenient for the subsequent removal of large particles of impurities in the recovery box 18; a ball is slidably connected to the locking block 62, and a groove 66 in contact with the ball is provided on the guide block 59, and a second spring 67 is provided between the ball and the locking block 62. When it is necessary to fix the flange cover 53 and the connecting flange 52, the locking block 62 is pressed to slide on the guide block 59, and the second inclined surface 63 provided at the end of the locking block 62 contacts the T-shaped block 60. The component force generated after the contact drives the T-shaped block 60 to move on the guide block 59, thereby driving the flange cover 53 to approach the connecting flange 52, further compressing the flange cover 53 and the connecting flange 5 2, the first sealing ring 56 and the second sealing ring 57 are arranged between the flange cover 53 and the connecting flange 52 to strengthen the double seal between the flange cover 53 and the connecting flange 52, and prevent the sewage from being discharged from between the flange cover 53 and the connecting flange 52 during the sewage treatment process, thereby improving the efficiency of sewage treatment; finally, the balls arranged on both sides of the locking block 62 slide into the corresponding grooves 66, and the resistance generated by the contact between the balls and the grooves 66, combined with the rebound force generated by the compression of the second spring 67, prevents the locking block 62 from moving on the guide block 59, and avoids the external force from accidentally moving the locking block 62 during the sewage treatment process, affecting the stability of the overall structure. In addition, there is no need to tighten several fixing bolts, and only the locking block 62 needs to be moved to achieve the connection between the flange cover 53 and the connecting flange 52, which simplifies the operation steps of connecting the flange cover 53 and the connecting flange 52 to a certain extent, and further improves the efficiency of sewage treatment.

[0034] Preferably, Figure 1and Figure 8 As shown, the top of the recovery box 18 is provided with an inclined plate 68, and there is a gap between the inclined plate 68 and the recovery box 18. The inclined plate 68 is provided with a plurality of sixth through holes. When large particles of impurities sink to the recovery box 18, the inclined plate 68 contacts the large particles of impurities, and the component force generated drives the large particles of impurities to move to one side until the large particles of impurities enter the recovery box 18 through the gap between the inclined plate 68 and the recovery box 18. When the large particles of impurities rise, the remaining large particles of impurities continue to enter the gap, which will limit the outflow of the large particles of impurities in the recovery box 18, and the large particles of impurities in the recovery box 18 will be The clean water returns to the first sedimentation chamber 7 or the second sedimentation chamber 9 through the sixth through hole provided on the inclined plate 68. In addition, the L-shaped block 15 is inverted to prevent large particles of impurities that sink in the first sedimentation chamber 7 and the second sedimentation chamber 9 from flowing back through the first overflow port 16 and the second overflow port 17. The second partition plate 4 and the third partition plate 5 are inclined to make the cross-section of the first mixing chamber 6 or the second mixing chamber 8 gradually shrink from bottom to top. Since the flow rate of the water flow remains unchanged, the flow rate of the water flow will gradually increase, so that the large particles of impurities contained in the sewage can be better thrown out, thereby improving the effect of sewage treatment.

[0035] Example 1 The present invention provides a municipal sewage filtering and purification device, such as Figure 1 and Figure 2 As shown, when sewage needs to be treated, the sewage is introduced into the first mixing chamber 6 at the bottom of the tank body through the water inlet 1, and the flocculant is introduced into the first mixing chamber 6 through the delivery pipe to mix with the sewage. At the same time, the sewage is guided by the first spiral plate 13 in the first mixing chamber 6 so that the sewage no longer flows in a straight line but forms a spiral path, which greatly increases the disturbance degree of the fluid and makes the mixing between the fluids more complete; in addition, the first spiral plate 13 can extend the flow of the sewage in the first spiral plate 13, so that the sewage is fully in contact with the flocculant, so that the colloids and fine suspended matter in the water are completely condensed into large particle impurities, which is convenient for removing impurities in the sewage and improving the effect of sewage treatment; In addition, after the sewage and the flocculant are mixed and a precipitation reaction occurs, the sewage and the condensed large particles of impurities are guided through the first spiral plate 13. When the sewage and the large particles of impurities are spirally ascended in the first mixing chamber 6, the large particles of impurities condensed are thrown onto the second partition plate 4 due to the different centrifugal forces they are subjected to due to the different densities of the large particles of impurities and the sewage, and then flow out of the first overflow port 16 through a plurality of first outlets 11 provided on the second partition plate 4, thereby achieving separation of water and the condensed large particles of impurities. In addition, the impulse generated by the spiral process of the water flow will take away the large particles of impurities that have stayed on the second partition plate 4 for a long time, thereby preventing the large particles of impurities from clogging the first outlet 11, thereby improving the efficiency of filtering the large particles of impurities in the sewage. After the sewage with large particles of impurities flows into the first sedimentation chamber 7, the large particles of impurities gradually settle to the bottom under the action of gravity and enter the recovery box 18, while the sewage passes through the through hole 19 provided on the first partition plate 3, so that the sewage containing a small amount of impurities enters the second mixing chamber 8 from the first sedimentation chamber 7, and the large particles of impurities are further separated from the water flow through the diversion of the second spiral plate 14, and flow through the second outlet 12 and the second overflow port 17 into the second sedimentation chamber 9. Then, under the action of gravity, the large particles of impurities are settled at the bottom of the second sedimentation chamber 9 and enter the recovery box 18, thereby performing secondary filtration treatment on the sewage and improving the effect of sewage treatment; Finally, the clean water after the large particles of impurities are removed gradually rises, and flows into the overflow chamber 20 provided on the top of the tank body through the first through hole 21, the second through hole 22, and the third through hole 23, and is discharged from the water outlet 2, thereby removing the large particles of impurities in the sewage. At the same time, the first through hole 21, the second through hole 22, and the third through hole 23 are directly smaller than the large particles of impurities, preventing them from entering the overflow chamber 20.

[0036] Example 2 On the basis of Example 1, Figure 1-Figure 5 As shown, since different flocculants need to be added for different sewage treatments, the outer diameters of the large impurities particles formed are also different. When the outer diameter of the large impurities particles changes, it is necessary to adjust the sizes of the first filter hole, the second filter hole, the first overflow port 16 and the second overflow port 17, so that the large impurities particles can smoothly flow from the first mixing chamber 6 into the first sedimentation chamber 7 or from the second mixing chamber 8 into the second mixing chamber 8, and at the same time avoid a large amount of separated clean water from entering the subsequent chambers, thereby improving the efficiency of removing large impurities particles in sewage; When the sizes of the first outlet 11, the second outlet 12, the first overflow port 16 and the second overflow port 17 need to be adjusted, the driving wheel 49 is turned on the tank body so that the limit block 50 provided on one side of the driving wheel 49 slides out of the limit groove 48, thereby releasing the restriction on the rotation of the third gear 45 on the tank body. Then, the driving wheel 49 is further turned so that the cam 51 provided on the other side of the driving wheel 49 meshes with the third gear 45 and drives the third gear 45 to rotate on the tank body. Since the third gear 45 meshes with several first gears 40 at the same time, The first gears 40 are driven to rotate on the tank body. In addition, since the fourth gear 46 is meshed with the adjacent first gears 40 and the second gears 41 at the same time, the second gears 41 are driven to rotate on the tank body, and then the fixing blocks 38 located on the first driving rod 30 and the second driving rod 31 are respectively driven to move up and down, and the force applied by the fixing blocks 38 on the cone ring 36 is released, so that the sealing strip 37 provided between the cone ring 36 and the first driving rod 30 or the second driving rod 31 is in a loose state, which is convenient for the subsequent adjustment of the first driving rod The position of the first driving rod 30 and the second driving rod 31 is adjusted, and at the same time, the first driving rod 30 or the second driving rod 31 is prevented from excessively wearing the sealing strip 37 when the position of the first driving rod 30 or the second driving rod 31 is adjusted, resulting in damage to the sealing effect of the subsequent sealing strip 37, preventing subsequent water from flowing out of the gap of the first driving rod 30 or the second driving rod 31, and at the same time improving the overall sealing of the tank body, preventing external dust from entering the overflow chamber 20, causing the clean water from which large particles of impurities are removed to be contaminated again, thereby improving the effect of treating sewage; in addition, due to the fixing block The first rotating disk 43 and the second rotating disk 44 are respectively connected with the corresponding rotating shaft 42 by threads, and the pitches of the threads on the convex ring 35 and the rotating shaft 42 are equal, so that the first gear 40, the second gear 41, the third gear 45 and the fourth gear 46 move up and down at the same time, so that during the process of moving the fixed block 38, the first gear 40, the second gear 41, the third gear 45 and the fourth gear 46 are always in a meshing state, thereby improving the stability of the overall structure, reducing the number of maintenance times, and improving the efficiency of sewage treatment; When the sealing strip 37 is loosened, the first driving rod 30 or the second driving rod 31 is moved up and down on the tube body, and the first connecting rod 32 or the second connecting rod 33 is cooperated to transmit the component force, so as to drive the first baffle 26 or the second baffle 27 to move on the second partition 4 or the third partition 5, thereby changing the size of the first filter hole and the second filter hole. At the same time, since the third connecting rod 34 provided on the first baffle 26 or the second baffle 27 is rotatably connected with the swing plate 25, the swing plate 25 is driven to rotate on the cross plate 24, thereby changing the size of the first overflow port 16 and the second overflow port 17, so that large particle impurities of different particle sizes can smoothly flow from the first mixing chamber 6 into the first sedimentation chamber 7 or from the second mixing chamber 8 into the second mixing chamber 8, and at the same time, a large amount of separated clean water is prevented from entering the subsequent chamber, thereby improving the efficiency of removing large particle impurities in sewage. In addition, there is no need to set up a separate power device to drive them separately, reducing the space required for the installation of the power device and the cost required for manufacturing; After adjusting the position of the first driving rod 30 or the second driving rod 31, the driving wheel 49 is rotated in the opposite direction, and the fixing block 38 provided on the first driving rod 30 and the second driving rod 31 is driven to move downward, and the cone surface 39 provided on the fixing block 38 contacts the cone ring 36, and the component force generated drives the cone ring 36 to move downward on the convex ring 35, compressing the sealing strip 37 provided between the cone ring 36 and the first driving rod 30 or the second driving rod 31, so that the sealing strip 37 is in a tight state, filling the gap between the first driving rod 30 or the second driving rod 31 and the tank body, further improving the sealing of the tank body, preventing external dust from entering the overflow chamber 20, causing the clean water from which large particles of impurities are removed to be contaminated again, thereby improving the effect of sewage treatment; In addition, each time the third gear 45 is driven to rotate a certain angle, the limit block 50 provided on one side of the driving wheel 49 will re-enter the limit groove 48. At the same time, the resistance generated by the contact between the limit block 50 and the limit groove 48 will limit the rotation of the third gear 45 on the tank body, thereby preventing external force from accidentally driving the third gear 45 to rotate, affecting the sealing effect of the sealing strip 37 on the gap between the first driving rod 30 or the second driving rod 31 and the tank body, thereby further improving the sealing performance of the tank body, preventing external dust from entering the overflow chamber 20, causing the clean water from which large particles of impurities have been removed to be contaminated again, thereby improving the effect of sewage treatment.

[0037] Example 3 On the basis of Example 1, Figure 6 and Figure 7As shown, when the flange cover 53 and the connecting flange 52 need to be fixed, the locking block 62 is pressed to slide on the guide block 59, and the second inclined surface 63 provided at the end of the locking block 62 contacts the T-shaped block 60. The component force generated after the contact drives the T-shaped block 60 to move on the guide block 59, and drives the first inclined surface 61 provided at the end of the T-shaped block 60 to contact the flange cover 53. The component force generated after the contact further pushes the flange cover 53 to approach the connecting flange 52, further compresses the first sealing ring 56 and the second sealing ring 57 provided between the flange cover 53 and the connecting flange 52, strengthens the double seal between the flange cover 53 and the connecting flange 52, and prevents the sewage from being discharged from between the flange cover 53 and the connecting flange 52 during the sewage treatment process, thereby improving the efficiency of sewage treatment. Finally, the balls provided on both sides of the locking block 62 slide into the corresponding grooves 66. The resistance generated by the contact between the balls and the grooves 66, combined with the rebound force generated by the compression of the second spring 67, prevents the locking block 62 from moving on the guide block 59, thereby preventing the locking block 62 from being accidentally moved by external forces during the sewage treatment process, thereby affecting the stability of the overall structure. In addition, there is no need to tighten a number of fixing bolts, and only the locking block 62 needs to be moved to achieve the connection between the flange cover 53 and the connecting flange 52. This simplifies the operation steps of connecting the flange cover 53 and the connecting flange 52 to a certain extent, thereby further improving the efficiency of sewage treatment. When it is necessary to clear the large particles of impurities in the recovery box 18, the locking block 62 is pushed outward to release the restriction on the sliding of the T-shaped block on the guide block 59, and under the action of the rebound force generated by the compression of the first spring 64, the T-shaped block 60 is driven to slide on the guide block 59 until the T-shaped block is completely retracted into the guide block 59, thereby releasing the connection between the flange cover 53 and the connecting flange 52, which is convenient for the subsequent removal of large particles of impurities in the recovery box 18.

[0038] Example 4 On the basis of Example 1, Figure 1 and Figure 8As shown, the top of the recovery box 18 is provided with an inclined plate 68, and there is a gap between the inclined plate 68 and the recovery box 18. The inclined plate 68 is provided with a plurality of sixth through holes. When large particles of impurities sink to the recovery box 18, the inclined plate 68 contacts the large particles of impurities, and the component force generated drives the large particles of impurities to move to one side until the large particles of impurities enter the recovery box 18 through the gap between the inclined plate 68 and the recovery box 18. When the large particles of impurities rise, the remaining large particles of impurities continue to enter the gap, which will limit the outflow of the large particles of impurities in the recovery box 18, and the large particles of impurities in the recovery box 18 will be The clean water returns to the first sedimentation chamber 7 or the second sedimentation chamber 9 through the sixth through hole provided on the inclined plate 68. In addition, the L-shaped block 15 is inverted to prevent large particles of impurities that sink in the first sedimentation chamber 7 and the second sedimentation chamber 9 from flowing back through the first overflow port 16 and the second overflow port 17. The second partition plate 4 and the third partition plate 5 are inclined to make the cross-section of the first mixing chamber 6 or the second mixing chamber 8 gradually shrink from bottom to top. Since the flow rate of the water flow remains unchanged, the flow rate of the water flow will gradually increase, so that the large particles of impurities contained in the sewage can be better thrown out, thereby improving the effect of sewage treatment.

Claims

1. A municipal sewage filtering and purification device, comprising a tank body, and a water inlet (1) and a water outlet (2) arranged at the bottom and top of the tank body, characterized in that: A first partition (3), a second partition (4) and a third partition (5) are provided in the tank body, the first partition (3) divides the tank body into a first filtration zone and a second filtration zone, the second partition (4) divides the first filtration zone into a first mixing chamber (6) and a first sedimentation chamber (7), the third partition (5) divides the second filtration zone into a second mixing chamber (8) and a second sedimentation chamber (9), and a flocculant delivery pipe (10) is provided at the bottom of the first mixing chamber (6) and the second mixing chamber (8); The second partition plate (4) is provided with a first outlet (11) communicating with the first mixing chamber (6) and the first sedimentation chamber (7); the third partition plate (5) is provided with a second outlet (12) communicating with the second mixing chamber (8) and the second sedimentation chamber (9); the first mixing chamber (6) and the second mixing chamber (8) are provided with a first spiral plate (13) and a second spiral plate (14) for use with the first outlet (11) and the second outlet (12), respectively; the first outlet (11) and the second outlet (12) are provided with an L-shaped block (15), respectively; a first overflow port (16) and a second overflow port (17) are formed between the L-shaped block (15) and the second partition plate (4) and the third partition plate (5), respectively; the first overflow port (16) and the second overflow port (17) are respectively communicated with the first outlet (11) and the second outlet (12); and a recovery box (18) is provided at the bottom of each of the first sedimentation chamber (7) and the second sedimentation chamber (9); The bottom of the first partition plate (3) is provided with a through hole (19) connected to the first sedimentation chamber (7) and the second mixing chamber (8); the top of the tank body is provided with an overflow chamber (20) connected to the water outlet (2), and a first through hole (21), a second through hole (22) and a third through hole (23) connecting the overflow chamber (20) and the first mixing chamber (6), the overflow chamber (20) and the second mixing chamber (8), and the overflow chamber (20) and the second sedimentation chamber (9).

2. The urban sewage filtering and purification equipment according to claim 1, characterized in that: The L-shaped block (15) comprises a transverse plate (24) and a swing plate (25) rotatably arranged on the transverse plate (24); a first baffle plate (26) and a second baffle plate (27) are slidably connected to the second baffle plate (4) and the third baffle plate (5), respectively; a fourth through hole (28) and a fifth through hole (29) are respectively provided on the first baffle plate (26) and the second baffle plate (27); the first outlet (11) and the fourth through hole (28), and the second outlet (12) and the fifth through hole (29) are interconnected to form a first filter hole and a second filter hole.

3. The urban sewage filtering and purification equipment according to claim 2, characterized in that: A plurality of first driving rods (30) and second driving rods (31) are slidably connected to the tank body; ends of the first driving rod (30) and the second driving rod (31) are rotatably connected to a first connecting rod (32) and a second connecting rod (33) respectively; ends of the first connecting rod (32) and the second connecting rod (33) are rotatably connected to a first baffle plate (26) and a second baffle plate (27) respectively; third connecting rods (34) are rotatably connected to the first baffle plate (26) and the second baffle plate (27); and the third connecting rods (34) are rotatably connected to the swing plates (25) respectively.

4. The urban sewage filtering and purification equipment according to claim 3 is characterized in that: The top of the tank body is provided with a plurality of convex rings (35), a conical ring (36) is slidably connected to the convex ring (35), a sealing strip (37) is provided between the conical ring (36) and the first driving rod (30) and the second driving rod (31), a fixing block (38) is threadedly connected to the convex ring (35), and a conical surface (39) in contact with the conical ring (36) is provided at the end of the fixing block (38).

5. The urban sewage filtering and purification equipment according to claim 4, characterized in that: The fixing blocks (38) located on the first driving rod (30) and the second driving rod (31) are respectively provided with a first gear (40) and a second gear (41); the tank body is provided with a plurality of rotating shafts (42); one of the rotating shafts (42) is threadedly connected to a first rotating disk (43); the remaining rotating shafts (42) are respectively threadedly connected to second rotating disks (44); the first rotating disk (43) is provided with a third gear (45) meshing with a plurality of first gears (40) at the same time; the second rotating disk (44) is provided with a fourth gear (46) meshing with adjacent first gears (40) and second gears (41) at the same time; the rotating shaft (42) and the convex ring (35) are provided with the same pitch.

6. The urban sewage filtering and purification equipment according to claim 5, characterized in that: The third gear (45) is provided with an arc block (47), and the arc block (47) is provided with a plurality of limit grooves (48). The tank body is rotatably connected with a driving wheel (49), and one side of the driving wheel (49) is provided with a limit block (50) in contact with the limit groove (48), and the other side of the driving wheel (49) is provided with a cam (51) meshing with the third gear (45).

7. The urban sewage filtering and purification equipment according to claim 1, characterized in that: The end of the recovery box (18) is provided with a connecting flange (52) and a flange cover (53) detachably connected to the connecting flange (52); the connecting flange (52) is provided with a protrusion (54); the flange cover (53) is provided with a groove (55) slidably connected to the protrusion (54); a first sealing ring (56) and a second sealing ring (57) are respectively provided between the protrusion (54) and the flange cover (53) and between the groove (55) and the connecting flange (52).

8. The urban sewage filtering and purification equipment according to claim 7, characterized in that: The flange cover (53) is provided with a guide hole (58), the connecting flange (52) is provided with a guide block (59) slidably connected to the guide hole (58), an end of the guide block (59) passes through the guide hole (58) and is slidably connected to a T-shaped block (60), the T-shaped block (60) is provided with a first inclined surface (61) in contact with the flange cover (53), and the guide block (59) is slidably connected to a locking block (62) for driving the T-shaped block (60) to move.

9. The urban sewage filtering and purification equipment according to claim 8, characterized in that: The end of the locking block (62) is provided with a second inclined surface (63) in contact with the T-shaped block (60), a first spring (64) is provided between the two T-shaped blocks (60), a ball (65) is slidably connected to the locking block (62), a groove (66) in contact with the ball (65) is provided on the guide block (59), and a second spring (67) is provided between the ball (65) and the locking block (62).

10. The urban sewage filtering and purification equipment according to claim 1, characterized in that: An inclined plate (68) is provided on the top of the recovery box (18), a gap exists between the inclined plate (68) and the recovery box (18), a plurality of sixth through holes (69) are provided on the inclined plate (68), the L-shaped block (15) is inverted, and the second partition plate (4) and the third partition plate (5) are inclined.

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