Self-cleaning sewage filtering device

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to a self-cleaning sewage filter device, comprising a filter cartridge with a transparent end at the top, wherein a funnel is rotatably installed at a position near the top of the filter cartridge; the beneficial effects of the present invention are as follows: by installing an upper filter screen and a lower filter screen on the inner surface of the filter cartridge, and installing a cleaning mechanism and a lower cleaning mechanism that respectively match the upper filter screen and the lower filter screen on the rotating shaft, when the upper filter screen is blocked, the water level above the upper filter screen becomes higher, and when the water level reaches the position of the upper sensor, the slide column slides down, causing the sewage to flow out from the lower water outlet, and the lower filter screen starts to work, and at the same time, the upper cleaning mechanism cleans the upper filter screen, and when the lower filter screen is blocked and the water level rises to the lower sensor, the slide column rises, the sewage flows out from the upper water outlet, the upper filter screen works, and the lower cleaning mechanism cleans the lower filter screen, and through the alternating operation of the two filter screens, the device can not only continuously filter the sewage, but also automatically clean the filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a self-cleaning sewage filtering device. Background Art

[0002] With the acceleration of industrialization and urbanization, water shortage and water pollution are becoming increasingly prominent. Sewage treatment, as an important part of environmental protection, plays an irreplaceable role in maintaining ecological balance and protecting people's health. Traditional sewage treatment methods mainly include physical treatment, chemical treatment and biological treatment. The commonly used method is to use a filter to filter sewage, but the filter will be clogged after long-term use.

[0003] Chinese patent document CN 219399109 U discloses a sewage filtering device with a self-cleaning mechanism, comprising a rectangular plate, support rods are arranged around the bottom end of the rectangular plate, a water storage tank is arranged at the bottom end of the rectangular plate, a processing sleeve is arranged through the top end of the rectangular plate, a support plate is arranged below the inside of the processing sleeve, and a driving motor is arranged at the central position of the top end of the supporting plate, a rotating shaft is arranged at the output end of the driving motor, and a cleaning brush is arranged outside the rotating shaft, a filter sleeve is arranged above the inside of the processing sleeve, and a No. 1 screen is arranged below the inside of the filter sleeve, and a No. 2 screen is arranged above the inside of the filter sleeve; the application is provided with a No. 1 screen, a support plate, a cleaning brush, a No. 2 screen, a rotating shaft and a driving motor, and the driving motor is used to drive the cleaning brush to rotate, so that the No. 1 screen and the No. 2 screen can be cleaned, and the phenomenon of impurities blocking the screen holes can be avoided as much as possible, so that the device can perform self-cleaning work.

[0004] Although the above disclosed device can clean the filter, it can only clean the upper surface of the filter, and it is difficult to clean the filter thoroughly. In addition, the above disclosed device cannot collect and clean the debris filtered out and cleaned from the filter, so that the debris can only be left on the filter, and large amounts of sewage cannot be continuously filtered.

[0005] Therefore, a self-cleaning sewage filtering device is needed to solve the above problems. Summary of the invention

[0006] In order to solve the above problem, that is, to solve the problem that the existing sewage filtering device cannot clean the filter screen thoroughly and cannot continuously filter large quantities of sewage, the present invention provides a self-cleaning sewage filtering device.

[0007] The top of the filter cartridge is connected to the bottom of the funnel, and a sliding column is slidably installed inside the water drop chamber, and an upper water outlet hole and a lower water outlet hole are provided on the side wall of the water drop chamber, and an upper filter screen and a lower filter screen are fixedly installed on the inner surface of the filter cartridge, and the inner ends of the upper filter screen and the lower filter screen are respectively abutted against the outer surface of the rotating shaft, and the upper filter screen and the lower filter screen are respectively located below the upper water outlet hole and the lower water outlet hole, and an upper cleaning mechanism and a lower cleaning mechanism are fixedly installed on the outer surface of the rotating shaft, and the upper cleaning mechanism and the lower cleaning mechanism are respectively abutted against the upper filter screen and the lower filter screen, and a collecting chamber is provided in the side wall of the filter cartridge. The upper surfaces of the upper filter screen and the lower filter screen are both connected to the collecting chamber, and the inner surface of the filter cartridge is provided with an upper sensor and a lower sensor, and the upper sensor and the lower sensor are respectively located above the upper filter screen and the lower filter screen; by installing the upper filter screen and the lower filter screen on the inner surface of the filter cartridge, and installing a cleaning mechanism and a lower cleaning mechanism that match the upper filter screen and the lower filter screen on the rotating shaft respectively, when the upper filter screen is blocked, the water level above the upper filter screen becomes higher, and when the water level reaches the position of the upper sensor, the sliding column slides down, causing the sewage to flow out from the lower water outlet hole, and the lower filter screen starts to work, and at the same time, the upper cleaning mechanism cleans the upper filter screen. When the lower filter screen is blocked and the water level rises to the lower sensor, the sliding column rises, the sewage flows out from the upper water outlet hole, the upper filter screen works, and the lower cleaning mechanism cleans the lower filter screen. Through the alternating work of the two filter screens, the device can not only continuously filter the sewage, but also automatically clean the filter screen.

[0008] Preferably, the outer edge of the top of the funnel rotates within the side wall of the filter cartridge, a motor is fixedly mounted at the bottom end of the filter cartridge, the output shaft of the motor is coaxially fixedly connected to the bottom end of the rotating shaft, and a support leg is fixedly mounted at the bottom end of the filter cartridge.

[0009] Preferably, the water drop chamber is coaxially opened inside the rotating shaft, the top end of the water drop chamber is a transparent end, the water drop chamber is connected with the interior of the filter cartridge through the upper water outlet hole and the lower water outlet hole opened obliquely downward, the upper water outlet hole is located above the lower water outlet hole, the top end of the sliding column is a pointed end, the diameter of the sliding column is equal to the diameter of the water drop chamber, an electric telescopic rod is fixedly installed inside the sliding column, the telescopic end of the electric telescopic rod is fixedly connected to the bottom end of the water drop chamber, the upper sensor and the lower The sensors are electrically connected to the electric telescopic rod through an external controller, and the interior of the upper water outlet is hinged with a hinged plate through a torsion spring; a sliding column is slidably arranged in the water drop chamber, and the electric telescopic rod that drives the sliding column to operate is connected to the upper sensor and the lower sensor, so that the sliding column can automatically slide up or down according to the change of water level, thereby changing the flow path of sewage and improving the overall linkage of the equipment. When the sewage needs to flow out from the lower water outlet, when it enters the water drop chamber from the funnel, the hinged plate can effectively prevent the sewage from flowing out through the upper water outlet.

[0010] Preferably, the upper filter screen and the lower filter screen are both in a cone shape, and the inner end of the upper filter screen is located below the upper water outlet hole and above the lower water outlet hole.

[0011] Preferably, a water pumping chamber is coaxially provided at a position near the bottom end of the rotating shaft, the bottom end of the water pumping chamber is connected with the interior of the filter cartridge through a water inlet hole, a second one-way valve is provided inside the water inlet hole, a piston is slidably installed inside the water pumping chamber, a water through hole is penetrated through the piston, a first one-way valve is provided inside the water through hole, a side sliding groove is provided on the side of the water pumping chamber, a side sliding block is fixedly installed on the side of the piston, and the side sliding block slides in the side sliding groove; through the setting of the first one-way valve and the second one-way valve, when the piston rises, the water in the filter cartridge will be pumped into the bottom of the piston in the water pumping chamber, and at the same time, the water above the piston will be pressed out from the top of the water pumping chamber, and when the piston slides down, the water below the piston will be pressed into the top of the piston, so that the piston can circulate, and the water source required for flushing can be provided for the upper cleaning mechanism and the lower cleaning mechanism.

[0012] Preferably, a reciprocating screw is rotatably installed inside the side sliding groove, a through hole is penetrated on the side sliding block, the reciprocating screw is set through the through hole, a mounting rod is fixedly installed inside the through hole, a guide sliding block is rotatably installed on the mounting rod, the guide sliding block slides in the screw groove of the reciprocating screw, a driven bevel gear is coaxially fixedly installed on the bottom end of the reciprocating screw, an active bevel gear is rotatably installed inside the rotating shaft, the active bevel gear is meshingly connected with the driven bevel gear, a driving gear is coaxially fixedly installed on the active bevel gear, an annular tooth groove is provided on the bottom wall of the filter cylinder, and the driving gear is meshingly connected with the annular tooth groove; wherein by making the driving gear mesh with the annular tooth groove, the reciprocating screw can be automatically driven to rotate when the rotating shaft rotates, thereby driving the piston to reciprocate, saving energy.

[0013] Preferably, the upper cleaning mechanism includes an upper scraper and an upper water pipe, the lower surface of the upper scraper abuts against the upper surface of the upper filter, the cross-section of the upper scraper is gate-shaped, the upper surface of the upper water pipe abuts against the lower surface of the upper filter, the upper water pipe is located directly below the upper scraper, an upper water spray hole is penetrated through the top wall of the upper water pipe, the inner end of the upper water pipe is connected with the top of the water pumping chamber through the upper water hole, an upper sliding chamber is provided on the side of the water drop chamber, the upper sliding chamber penetrates the upper water hole, the upper sliding chamber is located above the lower water outlet, an upper blocking slider is slidably installed inside the upper sliding chamber through a second spring, and the bottom of the inner end of the upper blocking slider is an inclined surface.

[0014] Preferably, the lower cleaning mechanism includes a lower scraper and a lower water pipe, the lower surface of the lower scraper abuts against the upper surface of the lower filter, the cross-section of the lower scraper is gate-shaped, the upper surface of the lower water pipe abuts against the lower surface of the lower filter, the lower water pipe is located directly below the lower scraper, a lower water spray hole is penetrated through the top wall of the lower water pipe, the inner end of the lower water pipe is connected with the top of the water pumping cavity through the lower water hole, a lower descending cavity is opened on the side of the water drop cavity near the bottom end, the lower descending cavity is arranged through the lower water hole, and the interior of the lower descending cavity is slidably arranged by a third spring A lower blocking slider is provided, and the top of the inner end of the lower blocking slider is arranged as an inclined surface; the upper blocking slider and the lower blocking slider are slidingly arranged at the positions of the upper water conveying hole and the lower water conveying hole respectively, when the sliding column is located at the upper part, the upper blocking slider will be squeezed, so that the upper water conveying hole can be blocked, so that the water in the water pumping chamber can only flow to the lower water conveying pipe through the lower water conveying hole; when the sliding column is located at the lower part, the lower blocking slider will be squeezed, so that the lower water conveying hole can be blocked, so that the water in the water pumping chamber can only flow to the upper water conveying pipe through the upper water conveying hole, so that the water flow can be concentrated on flushing one of the filter screens, which can prevent the waste of resources.

[0015] Preferably, the collecting chamber is connected with the interior of the filter drum through an upper discharge port and a lower discharge port, the bottom of the upper discharge port is flush with the upper surface of the upper filter screen, and the bottom of the lower discharge port is flush with the upper surface of the lower filter screen, a rotating drum is rotatably installed on the outer side of the upper half of the collecting chamber, a spiral conveying plate is fixedly installed on the inner side of the rotating drum, an extrusion ring is slidably installed on the bottom end of the collecting chamber through a first spring, the outer side of the collecting chamber near the bottom end is connected with the outside through a slag discharge hole, a filter drum is fixedly installed through the inner side of the collecting chamber, and a filter is installed through the bottom wall of the filter drum There is an overflow pipe, the top of which is lower than the bottom of the filter cylinder; after the filtered debris falls into the collection chamber, it is transported downward to the extrusion ring by the spiral conveyor plate. As the debris gathers, the debris will be squeezed to squeeze out the residual water in the debris, and the water will fall into the filter cylinder through the filter cylinder. When the extrusion ring is lower than the slag discharge hole, the debris can be taken out through the slag discharge hole, and the extrusion ring can be pulled downward by external objects to take out the debris at any time. When the accumulated water in the filter cylinder exceeds the top of the overflow pipe, it will flow out through the overflow pipe. The setting of the overflow pipe can enable a part of water to remain in the filter cylinder for extraction by the pumping chamber.

[0016] Preferably, a first tooth groove is provided at the top end of the outer side of the funnel, a second tooth groove is provided on the inner side of the top end of the rotating drum, a connecting shaft is rotatably installed in the side wall of the filter drum, an upper gear and a lower gear are coaxially fixedly installed at the top and bottom ends of the connecting shaft, the upper gear is meshingly connected to the first tooth groove, and the lower gear is meshingly connected to the second tooth groove; this arrangement can enable the funnel to drive the rotating drum to rotate while rotating, thereby driving the spiral conveying plate to rotate, saving energy.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention installs an upper filter screen and a lower filter screen on the inner surface of the filter cylinder, and installs a cleaning mechanism and a lower cleaning mechanism that match the upper filter screen and the lower filter screen on the rotating shaft. When the upper filter screen is blocked, the water level above the upper filter screen becomes higher. When the water level reaches the position of the upper sensor, the slide column slides down to make the sewage flow out from the lower water outlet, and the lower filter screen starts to work. At the same time, the upper cleaning mechanism cleans the upper filter screen. When the lower filter screen is blocked and the water level rises to the lower sensor, the slide column rises, the sewage flows out from the upper water outlet, the upper filter screen works, and the lower cleaning mechanism cleans the lower filter screen. Through the alternating operation of the two filter screens, the device can not only continuously filter the sewage, but also automatically clean the filter screen.

[0019] 2. The present invention arranges a sliding column in the water drop chamber for sliding movement, and connects the electric telescopic rod driving the sliding column to the upper sensor and the lower sensor, so that the sliding column can automatically slide up or down according to the change of the water level, thereby changing the flow path of the sewage and improving the overall linkage of the equipment. When the sewage needs to flow out from the lower water outlet, when it enters the water drop chamber from the funnel, the hinged plate can effectively prevent the sewage from flowing out through the upper water outlet.

[0020] 3. The present invention arranges the first one-way valve and the second one-way valve. When the piston rises, the water in the filter cartridge will be pumped into the bottom of the piston in the pumping chamber. At the same time, the water above the piston will be pressed out from the top of the pumping chamber. When the piston slides down, the water below the piston will be pressed into the top of the piston, so that the piston can circulate and provide the upper cleaning mechanism and the lower cleaning mechanism with the water source required for flushing. By making the driving gear mesh with the annular tooth groove, when the rotating shaft rotates, the reciprocating screw can be automatically driven to rotate, thereby driving the piston to reciprocate and save energy.

[0021] 4. The present invention slides an upper blocking slider and a lower blocking slider at the positions of the upper water conveying hole and the lower water conveying hole respectively. When the slide column is located at the upper position, the upper blocking slider is squeezed to block the upper water conveying hole, so that the water in the water pumping chamber can only flow to the lower water conveying pipe through the lower water conveying hole. When the slide column is located at the lower position, the lower blocking slider is squeezed to block the lower water conveying hole, so that the water in the water pumping chamber can only flow to the upper water conveying pipe through the upper water conveying hole, so that the water flow can be concentrated on flushing one of the filter screens, thereby preventing waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the rotating shaft structure of the present invention;

[0025] Figure 4 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 5 It is a schematic diagram of the reciprocating screw structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the side slider of the present invention;

[0028] Figure 7 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0029] Figure 8 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0030] Fig. 9 It is a schematic diagram of the structure of the rotary drum of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the extrusion ring of the present invention.

[0032] In the figure:

[0033] 1. Filter cartridge; 2. Funnel; 3. Rotating shaft; 4. Drain chamber; 5. Sliding column; 6. Upper water outlet; 7. Lower water outlet; 8. Upper filter screen; 9. Lower filter screen; 10. Collecting chamber; 11. Upper sensor; 12. Lower sensor; 13. Motor; 14. Outrigger; 15. Electric telescopic rod; 16. Hinge plate; 17. Pumping chamber; 18. Water inlet; 19. Second one-way valve; 20. Piston; 21. Water hole; 22. First one-way valve; 23. Side slide groove; 24. Side slide block; 25. Reciprocating screw; 26. Through hole; 27. Mounting rod; 28. Guide slide block; 29. ​​Driven bevel gear; 30. Active bevel gear; 31. Driving gear; 3 2. Annular tooth groove; 33. Upper scraper; 34. Upper water pipe; 35. Upper water spray hole; 36. Upper water hole; 37. Upper sliding cavity; 38. Second spring; 39. Upper blocking slider; 40. Lower scraper; 41. Lower water pipe; 42. Lower water spray hole; 43. Lower water hole; 44. Lower sliding cavity; 45. Third spring; 46. Lower blocking slider; 47. Upper discharge port; 48. Lower discharge port; 49. Rotating drum; 50. Screw conveyor plate; 51. First spring; 52. Extrusion ring; 53. Slag discharge hole; 54. Filter cylinder; 55. Overflow pipe; 56. First tooth groove; 57. Second tooth groove; 58. Connecting shaft; 59. Upper gear; 60. Lower gear. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0035] like Figure 1-4As shown, the embodiment of the present invention discloses a self-cleaning sewage filtering device, including a filter cartridge 1 with a transparent end at the top, a funnel 2 is rotatably installed near the top of the filter cartridge 1, a rotating shaft 3 is coaxially fixedly installed at the bottom end of the funnel 2, a water drop chamber 4 is provided inside the rotating shaft 3, the top of the water drop chamber 4 is connected to the bottom end of the funnel 2, a sliding column 5 is slidably installed inside the water drop chamber 4, an upper water outlet hole 6 and a lower water outlet hole 7 are provided on the side wall of the water drop chamber 4, an upper filter screen 8 and a lower filter screen 9 are fixedly installed on the inner surface of the filter cartridge 1, the inner ends of the upper filter screen 8 and the lower filter screen 9 are both abutted against the outer surface of the rotating shaft 3, the upper filter screen 8 and the lower filter screen 9 are respectively located below the upper water outlet hole 6 and the lower water outlet hole 7, an upper cleaning mechanism and a lower cleaning mechanism are fixedly installed on the outer surface of the rotating shaft 3, the upper cleaning mechanism and the lower cleaning mechanism are respectively abutted against the upper filter screen 8 and the lower filter screen 9, a collecting chamber 10 is provided in the side wall of the filter cartridge 1, the upper filter screen 8 and the lower filter screen 9 The upper surfaces of the filter cartridge 1 are connected to the collecting chamber 10, and the inner surface of the filter cartridge 1 is provided with an upper sensor 11 and a lower sensor 12, which are respectively located above the upper filter screen 8 and the lower filter screen 9; by installing the upper filter screen 8 and the lower filter screen 9 on the inner surface of the filter cartridge 1, and installing an upper cleaning mechanism and a lower cleaning mechanism that match the upper filter screen 8 and the lower filter screen 9 respectively on the rotating shaft 3, when the upper filter screen 8 is blocked, the water level above the upper filter screen 8 becomes higher, and when the water level reaches the position of the upper sensor 11, the slide column 5 slides down, so that the sewage flows out from the lower water outlet 7, and the lower filter screen 9 starts to work, and at the same time, the upper cleaning mechanism cleans the upper filter screen 8, and when the lower filter screen 9 is blocked and the water level rises to the lower sensor 12, the slide column 5 rises, the sewage flows out from the upper water outlet 6, the upper filter screen 8 works, and the lower cleaning mechanism cleans the lower filter screen 9. Through the alternating work of the two filter screens, the device can not only continuously filter the sewage, but also automatically clean the filter screen.

[0036] like Figure 2 As shown, the outer edge of the top of the funnel 2 rotates inside the side wall of the filter cartridge 1, a motor 13 is fixedly installed at the bottom end of the filter cartridge 1, the output shaft of the motor 13 is coaxially fixedly connected to the bottom end of the rotating shaft 3, and a support leg 14 is fixedly installed at the bottom end of the filter cartridge 1.

[0037] like Figure 2As shown, the water drop chamber 4 is coaxially opened inside the rotating shaft 3, the top of the water drop chamber 4 is a transparent end, the water drop chamber 4 is connected to the interior of the filter cartridge 1 through an upper water outlet 6 and a lower water outlet 7 opened obliquely downward, the upper water outlet 6 is located above the lower water outlet 7, the top of the slide column 5 is a tip, the diameter of the slide column 5 is equal to the diameter of the water drop chamber 4, an electric telescopic rod 15 is fixedly installed inside the slide column 5, the telescopic end of the electric telescopic rod 15 is fixedly connected to the bottom end of the water drop chamber 4, the upper sensor 11 and the lower sensor 12 are connected to the electric telescopic rod 15 through an external controller. The retractable rod 15 is electrically connected, and the interior of the upper water outlet 6 is hinged with a hinged plate 16 through a torsion spring; by slidingly arranging the slide column 5 in the water drop chamber 4, and connecting the electric telescopic rod 15 that drives the slide column 5 to operate with the upper sensor 11 and the lower sensor 12, the slide column 5 can automatically slide up or down according to the change of the water level, thereby changing the flow path of the sewage and improving the overall linkage of the equipment. When the sewage needs to flow out from the lower water outlet 7, when it enters the water drop chamber 4 from the funnel 2, the hinged plate 16 can effectively prevent the sewage from flowing out through the upper water outlet 6.

[0038] like Figure 2 As shown, the upper filter screen 8 and the lower filter screen 9 are both in a cone shape, and the inner end of the upper filter screen 8 is located below the upper water outlet hole 6 and above the lower water outlet hole 7.

[0039] like Figure 4 As shown, a pumping chamber 17 is coaxially provided near the bottom end of the rotating shaft 3, the bottom end of the pumping chamber 17 is connected to the inside of the filter cartridge 1 through a water inlet hole 18, a second one-way valve 19 is provided inside the water inlet hole 18, a piston 20 is slidably installed inside the pumping chamber 17, a water through hole 21 is penetrated through the piston 20, a first one-way valve 22 is provided inside the water through hole 21, a side slide groove 23 is provided on the side of the pumping chamber 17, and a side slide block 23 is fixedly installed on the side of the piston 20 4. The side slide block 24 slides in the side slide groove 23; through the arrangement of the first one-way valve 22 and the second one-way valve 19, when the piston 20 rises, the water in the filter cartridge 1 will be pumped into the lower part of the piston 20 in the pumping chamber 17, and at the same time, the water above the piston 20 will be pressed out from the top of the pumping chamber 17. When the piston 20 slides down, the water below the piston 20 will be pressed into the upper part of the piston 20, so that the piston 20 circulates and can provide the water source required for flushing for the upper cleaning mechanism and the lower cleaning mechanism.

[0040] like Figure 4-6As shown, a reciprocating screw 25 is rotatably installed inside the side slide groove 23, a through hole 26 is opened on the side slide block 24, the reciprocating screw 25 is set through the through hole 26, a mounting rod 27 is fixedly installed inside the through hole 26, a guide slider 28 is rotatably installed on the mounting rod 27, the guide slider 28 slides in the screw groove of the reciprocating screw 25, a driven bevel gear 29 is coaxially fixedly installed on the bottom end of the reciprocating screw 25, an active bevel gear 30 is rotatably installed inside the rotating shaft 3, the active bevel gear 30 is meshed and connected with the driven bevel gear 29, a driving gear 31 is coaxially fixedly installed on the active bevel gear 30, an annular tooth groove 32 is opened on the bottom wall of the filter cartridge 1, and the driving gear 31 is meshed and connected with the annular tooth groove 32; wherein by making the driving gear 31 mesh with the annular tooth groove 32, when the rotating shaft 3 rotates, the reciprocating screw 25 can be automatically driven to rotate, thereby driving the piston 20 to reciprocate, saving energy.

[0041] like Figure 3-4 and Figure 7 As shown, the upper cleaning mechanism includes an upper scraper 33 and an upper water pipe 34. The lower surface of the upper scraper 33 abuts against the upper surface of the upper filter 8. The cross-section of the upper scraper 33 is in the shape of a gate. The upper surface of the upper water pipe 34 abuts against the lower surface of the upper filter 8. The upper water pipe 34 is located directly below the upper scraper 33. An upper water spray hole 35 is penetrated through the top wall of the upper water pipe 34. The inner end of the upper water pipe 34 is connected to the top of the water pumping chamber 17 through the upper water hole 36. An upper sliding chamber 37 is provided on the side of the water drop chamber 4. The upper sliding chamber 37 penetrates the upper water hole 36 and is located above the lower water outlet 7. An upper blocking slider 39 is slidably installed inside the upper sliding chamber 37 through a second spring 38. The bottom of the inner end of the upper blocking slider 39 is set as an inclined surface.

[0042] like Figure 3-4 and Figure 8As shown, the lower cleaning mechanism includes a lower scraper 40 and a lower water pipe 41. The lower surface of the lower scraper 40 abuts against the upper surface of the lower filter 9. The cross-section of the lower scraper 40 is gate-shaped. The upper surface of the lower water pipe 41 abuts against the lower surface of the lower filter 9. The lower water pipe 41 is located directly below the lower scraper 40. A lower water spray hole 42 is penetrated on the top wall of the lower water pipe 41. The inner end of the lower water pipe 41 is connected to the top of the water pumping chamber 17 through the lower water hole 43. A lower descending chamber 44 is opened near the bottom end of the side of the water drop chamber 4. The lower descending chamber 44 is arranged through the lower water hole 43. A lower blocking slider 46 is slidably installed inside the lower descending chamber 44 through a third spring 45. The top of the inner end of the slider 46 is set as an inclined surface; the upper blocking slider 39 and the lower blocking slider 46 are slidably set at the positions of the upper water supply hole 36 and the lower water supply hole 43 respectively. When the slide column 5 is located at the upper position, the upper blocking slider 39 will be squeezed to block the upper water supply hole 36, so that the water in the pumping chamber 17 can only flow to the lower water supply pipe 41 through the lower water supply hole 43. When the slide column 5 is located at the lower position, the lower blocking slider 46 will be squeezed to block the lower water supply hole 43, so that the water in the pumping chamber 17 can only flow to the upper water supply pipe 34 through the upper water supply hole 36, so that the water flow can be concentrated on flushing one of the filter screens, which can prevent waste of resources.

[0043] like Figure 2 and Figure 9-10 As shown, the collecting chamber 10 is connected with the interior of the filter cartridge 1 through an upper discharge port 47 and a lower discharge port 48, the bottom of the upper discharge port 47 is flush with the upper surface of the upper filter screen 8, the bottom of the lower discharge port 48 is flush with the upper surface of the lower filter screen 9, a rotating drum 49 is rotatably installed on the outer side of the upper half of the collecting chamber 10, a spiral conveying plate 50 is fixedly installed on the inner side of the rotating drum 49, an extrusion ring 52 is slidably installed on the bottom end of the collecting chamber 10 through a first spring 51, the outer side of the collecting chamber 10 near the bottom end is connected with the outside through a slag discharge hole 53, a filter cartridge 54 is fixedly installed on the inner side of the collecting chamber 10, an overflow pipe 55 is installed on the bottom wall of the filter cartridge 1, and the overflow The top of the tube 55 is lower than the bottom of the filter cylinder 54; after the filtered debris falls into the collection chamber 10, it is transported downward to the extrusion ring 52 by the spiral conveying plate 50. As the debris gathers, the debris will be squeezed to squeeze out the residual water in the debris, and the water will fall into the filter cylinder 1 through the filter cylinder 54. When the extrusion ring 52 is lower than the slag discharge hole 53, the debris can be taken out through the slag discharge hole 53, and the extrusion ring 52 can be pulled downward by an external object to take out the debris at any time. When the accumulated water in the filter cylinder 1 exceeds the top of the overflow pipe 55, it will flow out through the overflow pipe 55. The setting of the overflow pipe 55 can enable a part of water to remain in the filter cylinder 1 for extraction by the pumping chamber 17.

[0044] like Figure 2-3 and Fig. 9As shown, a first tooth groove 56 is provided at the top of the outer side of the funnel 2, a second tooth groove 57 is provided on the inner side of the top of the rotating drum 49, a connecting shaft 58 is rotatably installed in the side wall of the filter drum 1, and an upper gear 59 and a lower gear 60 are coaxially fixedly installed at the top and bottom ends of the connecting shaft 58, respectively, the upper gear 59 is meshingly connected with the first tooth groove 56, and the lower gear 60 is meshingly connected with the second tooth groove 57; this arrangement enables the funnel 2 to drive the rotating drum 49 to rotate while rotating, thereby driving the spiral conveying plate 50 to rotate, saving energy.

[0045] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A self-cleaning sewage filter device, comprising a filter cartridge (1) with a transparent top end, characterized in that: A funnel (2) is rotatably mounted near the top of the filter cartridge (1), a rotating shaft (3) is coaxially fixedly mounted on the bottom of the funnel (2), a water drop chamber (4) is provided inside the rotating shaft (3), the top of the water drop chamber (4) is connected to the bottom of the funnel (2), a sliding column (5) is slidably mounted inside the water drop chamber (4), an upper water outlet hole (6) and a lower water outlet hole (7) are provided on the side wall of the water drop chamber (4), an upper filter screen (8) and a lower filter screen (9) are fixedly mounted on the inner surface of the filter cartridge (1), the inner ends of the upper filter screen (8) and the lower filter screen (9) both abut against the outer surface of the rotating shaft (3), and the upper filter screen (8) and the lower filter screen (9) are slidably mounted on the side wall of the filter cartridge (1), and the upper filter screen (8) and the lower filter screen (9) are fixedly mounted on the inner surface of the filter cartridge (1). (9) are respectively located below the upper water outlet hole (6) and the lower water outlet hole (7); an upper cleaning mechanism and a lower cleaning mechanism are fixedly installed on the outer surface of the rotating shaft (3); the upper cleaning mechanism and the lower cleaning mechanism are respectively pressed against the upper filter screen (8) and the lower filter screen (9); a collecting chamber (10) is opened in the side wall of the filter cartridge (1); the upper surfaces of the upper filter screen (8) and the lower filter screen (9) are both connected to the collecting chamber (10); an upper sensor (11) and a lower sensor (12) are provided on the inner surface of the filter cartridge (1); the upper sensor (11) and the lower sensor (12) are respectively located above the upper filter screen (8) and the lower filter screen (9). A pumping chamber (17) is coaxially provided near the bottom end of the rotating shaft (3); the bottom end of the pumping chamber (17) is connected to the inside of the filter cartridge (1) through a water inlet hole (18); a second one-way valve (19) is provided inside the water inlet hole (18); a piston (20) is slidably mounted inside the pumping chamber (17); a water through hole (21) is provided through the piston (20); a first one-way valve (22) is provided inside the water through hole (21); a side sliding groove (23) is provided on the side of the pumping chamber (17); a side sliding block (24) is fixedly mounted on the side of the piston (20); the side sliding block (24) slides in the side sliding groove (23); A reciprocating screw (25) is rotatably mounted inside the side sliding groove (23); a through hole (26) is formed on the side sliding block (24); the reciprocating screw (25) passes through the through hole (26); a mounting rod (27) is fixedly mounted inside the through hole (26); a guide sliding block (28) is rotatably mounted on the mounting rod (27); the guide sliding block (28) slides in the groove of the reciprocating screw (25); a driven bevel gear (29) is coaxially fixedly mounted on the bottom end of the reciprocating screw (25); a driving bevel gear (30) is rotatably mounted inside the rotating shaft (3); the driving bevel gear (30) is meshingly connected with the driven bevel gear (29); a driving gear (31) is coaxially fixedly mounted on the driving bevel gear (30); an annular tooth groove (32) is formed on the bottom wall of the filter cartridge (1); the driving gear (31) is meshingly connected with the annular tooth groove (32).

2. A self-cleaning sewage filtering device according to claim 1, characterized in that: The outer edge of the top end of the funnel (2) rotates inside the side wall of the filter cartridge (1), a motor (13) is fixedly mounted on the bottom end of the filter cartridge (1), an output shaft of the motor (13) is coaxially fixedly connected to the bottom end of the rotating shaft (3), and a support leg (14) is fixedly mounted on the bottom end of the filter cartridge (1).

3. A self-cleaning sewage filtering device according to claim 1, characterized in that: The water drop chamber (4) is coaxially opened inside the rotating shaft (3); the top end of the water drop chamber (4) is a transparent end; the water drop chamber (4) is connected to the interior of the filter cartridge (1) through the upper water outlet hole (6) and the lower water outlet hole (7) opened obliquely downward; the upper water outlet hole (6) is located above the lower water outlet hole (7); the top end of the slide column (5) is a pointed end; the diameter of the slide column (5) is equal to the diameter of the water drop chamber (4); an electric telescopic rod (15) is fixedly installed inside the slide column (5); the telescopic end of the electric telescopic rod (15) is fixedly connected to the bottom end of the water drop chamber (4); the upper sensor (11) and the lower sensor (12) are both electrically connected to the electric telescopic rod (15) through an external controller; and a hinge plate (16) is hinged inside the upper water outlet hole (6) through a torsion spring.

4. A self-cleaning sewage filtering device according to claim 1, characterized in that: The upper filter screen (8) and the lower filter screen (9) are both in the shape of a cone, and the inner end of the upper filter screen (8) is located below the upper water outlet hole (6) and above the lower water outlet hole (7).

5. A self-cleaning sewage filtering device according to claim 1, characterized in that: The upper cleaning mechanism comprises an upper scraper (33) and an upper water pipe (34); the lower surface of the upper scraper (33) abuts against the upper surface of the upper filter (8); the cross-section of the upper scraper (33) is in the shape of a gate; the upper surface of the upper water pipe (34) abuts against the lower surface of the upper filter (8); the upper water pipe (34) is located directly below the upper scraper (33); an upper water spray hole (35) is formed through the top wall of the upper water pipe (34); and the upper water pipe The inner end of the water pump (34) is connected to the top of the water pumping chamber (17) through the upper water delivery hole (36); an upper sliding chamber (37) is provided on the side of the water drop chamber (4); the upper sliding chamber (37) passes through the upper water delivery hole (36); the upper sliding chamber (37) is located above the lower water outlet hole (7); an upper blocking slide block (39) is slidably mounted inside the upper sliding chamber (37) via a second spring (38); the bottom of the inner end of the upper blocking slide block (39) is provided with an inclined surface.

6. A self-cleaning sewage filtering device according to claim 5, characterized in that: The lower cleaning mechanism comprises a lower scraper (40) and a lower water pipe (41), the lower surface of the lower scraper (40) abuts against the upper surface of the lower filter (9), the cross-section of the lower scraper (40) is gate-shaped, the upper surface of the lower water pipe (41) abuts against the lower surface of the lower filter (9), the lower water pipe (41) is located directly below the lower scraper (40), and a lower water spray hole (42) is formed on the top wall of the lower water pipe (41). ), the inner end of the lower water delivery pipe (41) is connected to the top of the water pumping chamber (17) through the lower water delivery hole (43), a lower descending chamber (44) is provided on the side of the water drop chamber (4) near the bottom, the lower descending chamber (44) penetrates the lower water delivery hole (43), a lower blocking slider (46) is slidably mounted inside the lower descending chamber (44) via a third spring (45), and the top of the inner end of the lower blocking slider (46) is provided with an inclined surface.

7. A self-cleaning sewage filtering device according to claim 6, characterized in that: The collecting chamber (10) is connected to the interior of the filter cylinder (1) through an upper discharge port (47) and a lower discharge port (48); the bottom of the upper discharge port (47) is flush with the upper surface of the upper filter screen (8); the bottom of the lower discharge port (48) is flush with the upper surface of the lower filter screen (9); a rotating drum (49) is rotatably mounted on the outer side of the upper half of the collecting chamber (10); a spiral conveying plate (50) is fixedly mounted on the inner side of the rotating drum (49); an extrusion ring (52) is slidably mounted on the bottom end of the collecting chamber (10) via a first spring (51); a position of the outer side of the collecting chamber (10) near the bottom end is connected to the outside via a slag discharge hole (53); a filter cylinder (54) is fixedly mounted on the inner side of the collecting chamber (10); an overflow pipe (55) is mounted on the bottom wall of the filter cylinder (1); the top end of the overflow pipe (55) is lower than the bottom end of the filter cylinder (54).

8. A self-cleaning sewage filtering device according to claim 7, characterized in that: A first tooth groove (56) is formed at the top end of the outer side of the funnel (2), a second tooth groove (57) is formed at the inner side of the top end of the rotating drum (49), a connecting shaft (58) is rotatably mounted in the side wall of the filter drum (1), an upper gear (59) and a lower gear (60) are coaxially fixedly mounted at the top and bottom ends of the connecting shaft (58), the upper gear (59) is meshingly connected to the first tooth groove (56), and the lower gear (60) is meshingly connected to the second tooth groove (57).

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