Self-cleaning type sewage lifting equipment

Abstract

The invention relates to the technical field of sewage treatment, and discloses self-cleaning sewage lifting equipment which comprises an outer shell, a first supporting block is fixedly mounted on the inner bottom face of the outer shell, and a second supporting block is fixedly mounted at the position, located above the first supporting block, in the outer shell. The first supporting block and the second supporting block divide the interior of the outer shell into a sewage cavity and a sludge cavity, a water inlet pipe is fixedly installed at the position, over the sewage cavity, of the upper surface of the outer shell, a first suction pump is fixedly installed on the bottom face of the sewage cavity, a water outlet pipe is fixedly installed at the output end of the first suction pump, and a second suction pump is fixedly installed in the sludge cavity. And a blow-off pipe is fixedly mounted at the output end of the second suction pump. According to the domestic sewage treatment device, the first sieve plate, the second sieve plate and the third sieve plate are arranged in the outer shell and used for screening domestic sewage in a layered mode, solid-liquid separation of the domestic sewage is achieved, it is avoided that after solid dirt is accumulated, the lifting pipeline is blocked, classified treatment can be achieved on the sewage and the solid dirt, and the follow-up treatment efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a self-cleaning wastewater lifting device. Background Technology

[0002] Wastewater lifting equipment is a crucial facility in modern buildings, especially in scenarios involving basements and same-floor drainage, for the collection and transportation of sewage. Its core function is to collect and pressurize domestic sewage that cannot be discharged by gravity, and then lift it to the municipal sewage network. However, in actual operation, solid impurities such as fibers, hair, and particulate matter contained in domestic sewage easily accumulate inside the equipment, leading to impeller entanglement, valves failing to close tightly, and even pipe blockage, severely affecting the stable operation and service life of the equipment.

[0003] To address this issue, existing technologies typically incorporate screens or sieves inside the inlet or collection tank of wastewater lifting equipment for preliminary solid-liquid separation. While this method can intercept large solid debris to some extent, the trapped solid impurities continuously adhere to and accumulate on the sieve surface, causing screen blockage. This not only drastically increases water flow resistance and reduces treatment efficiency, but in severe cases, it can even prevent the equipment from receiving water normally, leading to malfunctions. Currently, most equipment lacks self-cleaning capabilities, requiring professionals to open the equipment casing and enter for manual cleaning or high-pressure water jet washing. This process is inconvenient, involves a harsh working environment, and necessitates equipment shutdown, impacting continuous system operation. Therefore, we propose a self-cleaning wastewater lifting equipment. Summary of the Invention

[0004] The present invention mainly addresses the technical problems existing in the prior art and provides a self-cleaning sewage lifting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-cleaning sewage lifting device, comprising an outer shell, wherein a support block one is fixedly installed on the inner bottom surface of the outer shell, and a support block two is fixedly installed on the inner surface of the outer shell above the support block one. The support block one and the support block two divide the inner surface of the outer shell into a sewage chamber and a sludge chamber. An inlet pipe is fixedly installed on the upper surface of the outer shell directly above the sewage chamber. A suction pump one is fixedly installed on the bottom surface of the sewage chamber, and an outlet pipe is fixedly installed at the output end of the suction pump one. A suction pump two is fixedly installed inside the sludge chamber. A drain pipe is fixedly installed at the outlet end. A second fixed plate and a first fixed plate are also fixedly installed inside the outer shell. The upper surface of the second fixed plate and the second support block jointly support the first separation component. The first separation component includes a separation channel. A first screen plate is fixedly installed on the bottom surface of the separation channel. A third screen plate is rotatably installed on the outer wall of the end of the second fixed plate. A traction component that works with the third screen plate is provided on the outside of the outer shell. The second separation component is slidably connected to the upper surface of the first support block below the third screen plate. The second separation component includes a second screen plate. An extension block is fixedly installed at the end of the second screen plate.

[0006] The outer casing is equipped with a cleaning assembly, which includes a high-pressure water pump installed inside the support block 2. A water supply pipe is fixedly installed at the output end of the high-pressure water pump. A through groove is opened on the periphery of the water supply pipe inside the support block 2. A three-way pipe is fixedly installed at the end of the water supply pipe. Cleaning pipe 1, cleaning pipe 2 and cleaning pipe 3 are fixedly installed at the three outlets of the three-way pipe, respectively. Multiple nozzles are fixedly installed on the outer walls of cleaning pipe 1, cleaning pipe 2 and cleaning pipe 3.

[0007] The inner walls of the outer shell on both sides of the support block are provided with clearance grooves. An adjustment component is installed inside the clearance groove. The adjustment component specifically includes two fixed shafts fixedly installed inside the clearance groove. A swing rod is rotatably installed on the outer wall of each of the two fixed shafts. A fixed rod is fixedly installed at the end of each of the two swing rods. A three-way pipe is fixed between the two fixed rods.

[0008] Preferably, a connecting component is provided at one end of the first separation component and the second separation component near the sludge chamber. The connecting component includes a slide rod rotatably mounted on the upper surface of the first separation component and a connecting rod located between the first separation component and the second separation component. The two ends of the connecting rod are rotatably connected to the end of the separation channel and the end of the extension block, respectively. A second sliding groove matching the connecting rod is opened inside the second support block. A first sliding groove is opened through both swing rods. A lifting rod is rotatably mounted inside the first sliding groove, and the end of the lifting rod can slide inside the first sliding groove. The lifting rod is vertically set, and the upper end of the lifting rod extends through the upper surface of the outer shell to the outside of the outer shell. The swing rod is controlled by the lifting rod.

[0009] Preferably, the two lifting rods are fixedly installed with crossbars at the upper ends of the outer casing, and two symmetrically arranged electric telescopic rods are fixedly installed on the upper surface of the outer casing below the crossbars, with the output ends of the electric telescopic rods fixedly connected to the bottom surface of the crossbars.

[0010] Preferably, the upper surface of the outer shell is provided with a third sliding groove that matches the sliding rod. The upper end of the sliding rod extends through the interior of the third sliding groove to the outer shell. An anti-detachment block is fixedly installed on the upper end of the sliding rod.

[0011] Preferably, a sealing cover is movably connected to the upper surface of the outer shell outside the third slide groove and the slide rod. Multiple bolts are movably connected to the lower end of the sealing cover, and the sealing cover is fixed to the upper surface of the outer shell by the multiple bolts.

[0012] Preferably, the traction assembly includes a fixed frame fixedly installed on the outer wall of the water inlet pipe, a winding roller rotatably installed inside the fixed frame, a traction rope fixedly connected to the outer wall of the winding roller, and a through hole opened on the outer wall of the outer shell one to two centimeters above the end of the third screen plate. The end of the traction rope passes through the through hole, extends into the outer shell, and is fixedly connected to the upper surface of the end of the third screen plate.

[0013] Preferably, a rotatable rotating rod is fixedly installed on the outer wall of the outer shell above the through hole, and the traction rope is in contact with the outer wall of the rotating rod.

[0014] Preferably, a partition plate is fixedly installed between the second fixing plate and the first fixing plate, and multiple slots are formed through the partition plate.

[0015] Preferably, a water inlet pipe is fixedly installed at the input end of the high-pressure water pump, and the water inlet pipe extends through the interior of the sludge chamber to the exterior of the outer casing.

[0016] Preferably, circular columns are fixedly installed on the outer walls of both sides of the first and second separation components near the sewage chamber, and a fourth sliding groove is opened on the inner walls of both sides of the outer shell to cooperate with the circular column. The fourth sliding groove has the same length as the third sliding groove.

[0017] Beneficial effects

[0018] This invention provides a self-cleaning sewage lifting device. It has the following beneficial effects:

[0019] (1) The self-cleaning sewage lifting equipment is equipped with a first screen plate, a second screen plate and a third screen plate inside the outer shell to screen domestic sewage in layers, so as to separate domestic sewage into solid and liquid, avoid solid waste from accumulating and clogging the lifting pipe, and can classify sewage and solid waste for treatment, thereby improving the efficiency of subsequent treatment.

[0020] (2) The self-cleaning sewage lifting equipment has a cleaning component installed inside the outer shell. Under the action of the swing rod in the adjustment component, the position of the three cleaning pipes in the cleaning component can be switched. The first screen plate, the second screen plate and the third screen plate can be washed and cleaned respectively when the swing rod swings to the top, the bottom and the middle path, so as to realize the self-cleaning of the screen plate. There is no need for staff to enter the inner shell to work, which greatly improves the convenience of cleaning the screen plate and ensures the normal operation of the device. Attached Figure Description

[0021] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer shell of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the third sieve plate structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the first separation component in its clean state according to the present invention;

[0028] Figure 6 This is a schematic diagram of the two cross-sectional structures of the support block of the present invention;

[0029] Figure 7 This is a schematic diagram of the cleaning component structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the adjustment component structure of the present invention;

[0031] Figure 9This is a schematic diagram of the adjustment component structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the adjustment component structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of the second separation component of the present invention;

[0034] Figure 12 This is a schematic diagram of the cross-sectional structure of the separation channel of the present invention;

[0035] Figure 13 This is a schematic diagram of the three-way pipe structure of the present invention.

[0036] Legend:

[0037] 1. Outer casing; 2. Inlet pipe; 3. Outlet pipe; 4. Traction assembly; 401. Traction rope; 402. Take-up roller; 403. Rotating rod; 5. Sealing cover; 6. Adjustment assembly; 601. Crossbar; 602. Lifting rod; 603. Swing rod; 604. Fixed shaft; 605. First chute; 7. Electric telescopic rod; 8. Sewage chamber; 9. Sludge chamber; 10. Suction pump one; 11. Suction pump two; 12. Sewage pipe; 13. Support block one; 14. Support block two; 15. Cleaning assembly; 1501. High-pressure water pump; 1502. Water inlet pipe; 1503. Water outlet pipe; 1504. 1505. Through channel; 1506. T-connector; 1507. Fixing rod; 1508. Cleaning pipe one; 1509. Nozzle; 15000. Cleaning pipe two; 1510. Cleaning pipe three; 16. First separation assembly; 1601. Separation channel; 1602. First screen plate; 17. Second separation assembly; 1701. Second screen plate; 1702. Extension block; 18. Third screen plate; 19. First fixing plate; 20. Divider plate; 21. Second fixing plate; 22. Second slide groove; 23. Connecting assembly; 2301. Slide rod; 2302. Anti-detachment block; 2303. Connecting rod; 2304. Third slide groove. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figure 1 - Figure 13As shown, a self-cleaning sewage lifting device includes an outer shell 1. A support block 13 is fixedly installed on the bottom surface of the inner shell 1. A support block 2 14 is fixedly installed above the support block 13 inside the outer shell 1. The support blocks 13 and 2 14 divide the interior of the outer shell 1 into a sewage chamber 8 and a sludge chamber 9. An inlet pipe 2 is fixedly installed on the upper surface of the outer shell 1 directly above the sewage chamber 8. A suction pump 10 is fixedly installed on the bottom surface of the sewage chamber 8. An outlet pipe 3 is fixedly installed at the output end of the suction pump 10, extending to the outside of the outer shell 1. A suction pump 2 is fixedly installed inside the sludge chamber 9. A second suction pump 11 has a drain pipe 12 fixedly installed at its output end. The end of the drain pipe 12 also extends to the outside of the outer casing 1. Inside the outer casing 1, above the first support block 13, a second fixing plate 21 and a first fixing plate 19 are also fixedly installed. The upper surface of the second fixing plate 21 is flush with the upper surface of the second support block 14. The upper surfaces of the second fixing plate 21 and the second support block 14 together support the first separation component 16. The upper surfaces of the first support block 13 and the second support block 14 near the sludge chamber 9 are both inclined. The first separation component 16 includes a separation channel 1601. A first screen plate 1602 is fixedly installed on the bottom surface of channel 1601, and the first screen plate 1602 is correspondingly arranged with the water inlet pipe 2. A third screen plate 18 is rotatably installed on the outer wall of the end of the second fixed plate 21 below the first screen plate 1602. A traction assembly 4 that works with the third screen plate 18 is provided on the outside of the outer shell 1. A second separation assembly 17 is slidably connected to the upper surface of the support block 13 below the third screen plate 18. The second separation assembly 17 includes a second screen plate 1701, and an extension block 1702 is fixedly installed at the end of the second screen plate 1701. The second screen plate 1701 is located directly below the third screen plate 18. In this configuration, a connecting component 23 is provided at one end of the first separation component 16 and the second separation component 17 near the sludge chamber 9. The connecting component 23 includes a slide rod 2301 rotatably mounted on the upper surface of the first separation component 16, and a connecting rod 2303 located between the first separation component 16 and the second separation component 17. The two ends of the connecting rod 2303 are rotatably connected to the end of the separation channel 1601 and the end of the extension block 1702, respectively. A second sliding groove 22 matching the connecting rod 2303 is opened inside the support block 14, and the connecting rod 2303 slides inside the second sliding groove 22.

[0040] Inside the outer casing 1, near the end of the support block 2 14 close to the sewage chamber 8, a cleaning component 15 is installed. The cleaning component 15 includes a high-pressure water pump 1501 installed inside the support block 2 14. A water supply pipe 1503 is fixedly installed at the output end of the high-pressure water pump 1501. A through groove 1504 is formed around the water supply pipe 1503 inside the support block 2 14. A three-way pipe 1505 is fixedly installed at the end of the water supply pipe 1503. Cleaning pipe one 1507, cleaning pipe two 1509, and cleaning pipe three 1510 are fixedly installed at the three outlets of the three-way pipe 1505, respectively. Multiple nozzles 1508 are fixedly installed on the outer walls of each of the three cleaning pipes 1507, 1509, and 1510. Solenoid valves are installed inside the three output ends of the three-way pipe 1505, controlled by a controller (CPM1A). The PLC controller controls the opening and closing of three solenoid valves and switches the flow direction of water inside the three-way pipe 1505. This is existing technology and will not be described in detail here. The nozzles 1508, which are located on the outer walls of the first cleaning pipe 1507, the second cleaning pipe 1509, and the third cleaning pipe 1510, are connected to the threaded bases that are fixedly welded to the outer walls of the first cleaning pipe 1507, the second cleaning pipe 1509, and the third cleaning pipe 1510, thereby achieving a stable connection of the nozzles 1508 under high pressure.

[0041] The inner walls of the outer shell 1 on both sides of the support block 14 are provided with clearance grooves. An adjustment component 6 is installed inside the clearance groove. The adjustment component 6 specifically includes two fixed shafts 604 fixedly installed inside the clearance groove. A swing rod 603 is rotatably installed on the outer wall of the two fixed shafts 604. A fixed rod 1506 is fixedly installed at the end of the two swing rods 603. A three-way pipe 1505 is fixed between the two fixed rods 1506. The three-way pipe 1505 is moved by the two swing rods 603.

[0042] Domestic sewage is introduced into the interior of the outer casing 1 through the inlet pipe 2. Upon entering the casing 1, the sewage first contacts the first screen plate 1602 located on the bottom surface of the separation channel 1601, where it is screened. The first screen plate 1602 separates the sewage into solids and liquids. Insoluble solids and sludge remain above the first screen plate 1602. Inside the casing 1, a screw conveyor transports the solid residues towards the front end of the separation channel 1601. When the solid residues are pushed to the inclined surface of the support block 14, they fall into the sludge chamber 9 under the pressure of gravity and subsequent solid residues. After initial screening by the first screen plate 1602, the sewage then... A third screen plate 18, positioned below the first screen plate 1602, performs secondary screening. The mesh size of the third screen plate 18 is smaller than that of the first screen plate 1602, allowing for further separation of insoluble impurities in the wastewater. The wastewater then continues to fall through a second screen plate 1701 for a third screening. The mesh size of the second screen plate 1701 is smaller than that of the third screen plate 18. A water level gauge is installed on the inner wall of the outer casing 1, below the second separation assembly 17. After a brief storage period, the wastewater separated into the wastewater chamber 8 is immediately pumped out by a suction pump 10 and then lifted into the main wastewater pipeline through the outlet pipe 3. When the wastewater stored in the wastewater chamber 8 exceeds the installation height of the water level gauge, water intake stops at the inlet pipe 2. After some sewage is discharged through the outlet pipe 3 and the suction pump 10 and the water level drops, water is reintroduced through the inlet pipe 2. After a period of use, the first screen plate 1602, the third screen plate 18, and the second screen plate 1701 need to be cleaned. The first screen plate 1602, the third screen plate 18, and the second screen plate 1701 are cleaned by adjusting the position of the three-way pipe 1505. The third screen plate 18 is adjusted to a vertical position, and the solid residue on the upper surface of the third screen plate 18 can fall onto the upper surface of the second separation component 17. The two swing rods 603 swing within the range between the upper and lower ends of the vertical third screen plate 18. The three-way pipe 1505 located at the end of the swing rod 603 is then used to clean the first screen plate 1602, the third screen plate 18, and the second screen plate 1701. Under the control of a solenoid valve, water is directed into cleaning pipe 1507 and sprayed outward through multiple nozzles 1508 on the outer wall of cleaning pipe 1507. The high-pressure water jets from the nozzles 1508 pass through the partition plate 20 and rinse the third screen plate 18, causing solid residues that are difficult to fall off the third screen plate 18 to be peeled off and collected on the upper surface of the extension block 1702. When the swing rod 603 swings upward to its maximum value, the solenoid valve allows water to flow through the three-way pipe 1505 into cleaning pipe 1510. Then, the water jets are sprayed outward through multiple nozzles 1508 on the outer wall of cleaning pipe 1510 to rinse and clean the upper surface of the first screen plate 1602.Solid residues remaining on the upper surface of the first screen plate 1602 are collected in the sludge chamber 9 by the high-pressure water flow, falling along the inner wall of the inclined separation channel 1601. When the swing rod 603 swings downward to its limit, the solenoid valve controls the water flow through the three-way pipe 1505 into the cleaning pipe 1509, and the high-pressure water is sprayed onto the upper surface of the second screen plate 1701 through multiple nozzles 1508 to clean the upper surface of the second screen plate 1701. Similarly, the solid residues remaining on the upper surface of the second screen plate 1701 are flushed into the sludge chamber 9 for collection.

[0043] As a technical optimization of the present invention, a first sliding groove 605 is provided through both swing rods 603. A lifting rod 602 is rotatably installed inside the first sliding groove 605, and the end of the lifting rod 602 can slide inside the first sliding groove 605. The lifting rod 602 is vertically arranged, and the upper end of the lifting rod 602 extends through the upper surface of the outer shell 1 to the outside of the outer shell 1. The swing rod 603 is controlled to swing by the lifting rod 602. A cylindrical protrusion is fixedly installed on the lower outer wall of the lifting rod 602. The cylindrical protrusion slides inside the first sliding groove 605. The lifting rod 602 can drive the swing rod 603 to rotate by lifting, thereby adjusting the tilt angle of the swing rod 603.

[0044] As a technical optimization of the present invention, two lifting rods 602 are fixedly installed with a crossbar 601 at the upper end outside the outer shell 1. Two symmetrically arranged electric telescopic rods 7 are fixedly installed on the upper surface of the outer shell 1 below the crossbar 601. The output end of the electric telescopic rod 7 is fixedly connected to the bottom surface of the crossbar 601. The arrangement of the electric telescopic rod 7 and the crossbar 601 can realize the synchronous control of the two lifting rods 602 to automatically slide up and down, thereby indirectly changing the tilt angle of the swing rod 603 and switching the cleaning component 15 to clean the first screen plate 1602, the third screen plate 18 and the second screen plate 1701.

[0045] As a technical optimization of the present invention, a third sliding groove 2304 matching the sliding rod 2301 is provided through the upper surface of the outer shell 1. The upper end of the sliding rod 2301 extends through the interior of the third sliding groove 2304 to the outside of the outer shell 1. An anti-detachment block 2302 is fixedly installed on the upper end of the sliding rod 2301. The sliding rod 2301 is provided only to facilitate external force to be applied to it, thereby pulling the first separation component 16 and the second separation component 17 to slide on the upper surface of the second support block 14 and the first support block 13. The sliding rod 2301 can also be driven to move by the cooperation of the electric slide rail and the electric slide table. If the sliding rod 2301 is driven to slide in the third sliding groove 2304 in this way, the sliding rod 2301 and the electric slide table are connected to slide up and down. The anti-detachment block 2302 can block the upper end of the sliding rod 2301.

[0046] As a technical optimization of the present invention, a sealing cover 5 is movably connected to the upper surface of the outer shell 1 outside the third slide groove 2304 and the slide rod 2301. A plurality of bolts are movably connected to the lower end of the sealing cover 5, and the sealing cover 5 is fixed to the upper surface of the outer shell 1 by the plurality of bolts. The sealing cover 5 can seal the exposed third slide groove 2304, and the open third slide groove 2304 can also facilitate the entry of personnel into the interior of the outer shell 1.

[0047] As a technical optimization of the present invention, the traction assembly 4 includes a fixed frame fixedly installed on the outer wall of the water inlet pipe 2. A take-up roller 402 is rotatably installed inside the fixed frame. A traction rope 401 is fixedly connected to the outer wall of the take-up roller 402. A through hole is opened on the outer wall of the outer shell 1 one to two centimeters above the end of the third screen plate 18. The end of the traction rope 401 passes through the through hole and extends into the outer shell 1 and is fixedly connected to the upper surface of the end of the third screen plate 18. The traction rope 401 can slide inside the through hole. A servo motor is fixedly installed on the outside of the fixed frame. The take-up roller 402 is driven to rotate by the servo motor. One end of the traction rope 401 is fixedly connected to the outer wall of the take-up roller 402. When the take-up roller 402 rotates, the length of the traction rope 401 can be changed, thereby changing the position of the third screen plate 18. The traction rope 401 can be used to fix the third screen plate 18 in a horizontal position, and can also switch the third screen plate 18 to a vertical position, which is convenient for cleaning the third screen plate 18.

[0048] As a technical optimization of the present invention, a rotatable rotating rod 403 is fixedly installed on the outer wall of the outer shell 1 above the through hole, and the traction rope 401 is in contact with the outer wall of the rotating rod 403; the setting of the rotating rod 403 can reduce the friction between the outer shell 1 and the traction rope 401 and has a guiding effect on the traction rope 401.

[0049] As a technical optimization of the present invention, a partition plate 20 is fixedly installed between the second fixing plate 21 and the first fixing plate 19, and multiple slots are opened through the partition plate 20; the partition plate 20 can form a barrier between the sewage chamber 8 and the cleaning component 15, so as to prevent sewage or sludge from directly contacting the cleaning component 15.

[0050] As a technical optimization of the present invention, a water inlet pipe 1502 is fixedly installed at the input end of the high-pressure water pump 1501. The water inlet pipe 1502 extends through the inside of the sludge chamber 9 to the outside of the outer shell 1. The water inlet pipe 1502 introduces clean water from outside the sludge chamber 9 into the inside of the outer shell 1 for rinsing and cleaning the first screen plate 1602, the third screen plate 18 and the second screen plate 1701.

[0051] As a technical optimization of the present invention, circular columns are fixedly installed on the outer walls of both sides of the first separation component 16 and the second separation component 17 near the sewage chamber 8. The inner walls of both sides of the outer shell 1 are provided with fourth sliding grooves that cooperate with the circular columns. The length of the fourth sliding groove is the same as that of the third sliding groove 2304. When the first separation component 16 and the second separation component 17 slide on the upper surfaces of the second support block 14 and the first support block 13, the circular columns fixedly installed on the outer walls of the ends of the first separation component 16 and the second separation component 17 slide inside the fourth sliding grooves opened on the inner walls of both sides of the outer shell 1. The positions of the first separation component 16 and the second separation component 17 can be limited by the fourth sliding grooves, so that the first separation component 16 and the second separation component 17 can be stably kept in an inclined state on the upper surfaces of the first support block 13 and the second support block 14.

[0052] Working principle of the invention:

[0053] In use, domestic sewage is introduced into the interior of the outer casing 1 through the inlet pipe 2. Upon entering the outer casing 1, the sewage first contacts the first screen plate 1602 located on the bottom surface of the separation channel 1601, thus screening the sewage. The first screen plate 1602 separates the sewage into solids and liquids, leaving insoluble solids and sludge above it. A screw conveyor is installed inside the outer casing 1 at the corresponding position of the separation channel 1601. This screw conveyor is existing technology and will not be described in detail here. The screw conveyor transports the solid residue towards the front end of the separation channel 1601. When the solid residue is pushed to the inclined surface of the upper surface of the support block 14, it falls into the sludge chamber 9 under the pressure of gravity and subsequent solid residue. After initial screening by the first screen plate 1602, the sewage then passes through the third screen plate 18 located below the first screen plate 1602. A second screening is performed, in which the mesh size on the third screen plate 18 is smaller than that on the first screen plate 1602, so that insoluble impurities in the sewage can be further separated. Then the sewage continues to fall and undergoes a third screening through the second screen plate 1701, the mesh size of the second screen plate 1701 is smaller than that on the third screen plate 18. A water level gauge is installed on the inner wall of the outer shell 1 below the second separation component 17. After the sewage separated into the sewage chamber 8 is briefly stored, it is immediately sucked out by the suction pump 10 and then lifted into the sewage main pipeline through the outlet pipe 3. When the sewage stored in the sewage chamber 8 exceeds the installation height of the water level gauge, the water inlet pipe 2 stops water intake. After the sewage is partially discharged out through the outlet pipe 3 and the suction pump 10 and the water level drops, the water inlet pipe 2 resumes water intake. After a period of use, the first screen plate 1602, the third screen plate 18 and the second screen plate 1701 need to be cleaned.

[0054] The first screen plate 1602, the third screen plate 18, and the second screen plate 1701 can be cleaned by adjusting the position of the three-way pipe 1505, which is rotatably adjustable inside the outer casing 1, in conjunction with the first cleaning pipe 1507, the second cleaning pipe 1509, the third cleaning pipe 1510, and the nozzle 1508. When cleaning the third screen plate 18, a servo motor is installed at the end of the take-up roller 402 located on the outer wall of the water inlet pipe 2. The servo motor drives the take-up roller 402 to rotate and release the traction rope 401. The end of the traction rope 401 is fixed to the upper surface of the third screen plate 18. After the traction rope 401 is released, the third screen plate 18, under its own weight, can move to the second fixed plate. The outer wall connection of 21 is axially rotating, and the third screen plate 18 can be rotated to a vertically downward state. At this time, the solid residue on the upper surface of the third screen plate 18 can fall to the upper surface of the second separation component 17. Then, the user can adjust the height of the crossbar 601 and the lifting rod 602 through the electric telescopic rod 7. A cylindrical protrusion is fixedly installed on the lower outer wall of the lifting rod 602. The cylindrical protrusion slides inside the first slide groove 605. The lifting rod 602 can drive the swing rod 603 to rotate by raising and lowering, thereby adjusting the tilt angle of the swing rod 603. The swing rod 603 swings within the range between the upper and lower ends of the vertical third screen plate 18. The water flow in the three-way pipe 1505 located at the end of the swing rod 603 is controlled by the solenoid valve. The water is injected into the cleaning pipe 1507 and sprayed outwards through multiple nozzles 1508 on the outer wall of the cleaning pipe 1507. The high-pressure water jets from the nozzles 1508 pass through the partition plate 20 and rinse the third screen plate 18, causing solid residues that are difficult to fall off the third screen plate 18 to be peeled off and collected on the upper surface of the second screen plate 1701. After the third screen plate 18 is cleaned, the winding roller 402 is driven to rotate and the traction rope 401 is wound up. As the traction rope 401 shortens, the end of the third screen plate 18 can be pulled upwards until the third screen plate 18 rotates back to its initial horizontal position. When the third screen plate 18 is pulled upwards and reset by the traction assembly 4, the operator can... After opening the sealing cover 5, the drive rod 2301 slides along the third slide groove 2304. The drive rod 2301 can be moved manually or by an external winch. By applying force to the drive rod 2301, the first separation component 16 and the second separation component 17 slide on the upper surfaces of the second support block 14 and the first support block 13, respectively. When the drive rod 2301 moves to one end of the third slide groove 2304 near the sludge chamber 9, the first separation component 16 and the second separation component 17 slide onto the inclined surfaces of the upper surfaces of the second support block 14 and the first support block 13, respectively. During this process, the circular columns fixedly installed on the outer walls of the ends of the first separation component 16 and the second separation component 17 slide inside the fourth slide grooves opened on the inner walls of both sides of the outer casing 1.The fourth groove can limit the positions of the first separating component 16 and the second separating component 17, so that the first separating component 16 and the second separating component 17 are stably kept in an inclined state on the upper surfaces of the first support block 13 and the second support block 14;

[0055] Next, the electric telescopic rod 7 drives the lifting rod 602 to move up and down, which in turn drives the swing rod 603 to swing up and down. When the swing rod 603 swings upward to its maximum value, the solenoid valve allows water to flow through the three-way pipe 1505 into the cleaning pipe 1510. Then, multiple nozzles 1508 on the outer wall of the cleaning pipe 1510 spray water outward to rinse and clean the upper surface of the first screen plate 1602. The solid residue remaining on the upper surface of the first screen plate 1602 is carried out by the high-pressure water flow along the inclined separation channel. The water falling from the inner wall of 1601 into the sludge chamber 9 is collected. When the swing rod 603 swings downward to its limit, the solenoid valve controls the water flow through the three-way pipe 1505 into the cleaning pipe 1509. High-pressure water is then sprayed onto the upper surface of the second screen plate 1701 through multiple nozzles 1508 to clean it. Similarly, any remaining solids on the upper surface of the second screen plate 1701 are flushed into the sludge chamber 9 for collection. The water flow in the three-way pipe 1505 is all channeled through the water inlet pipe 1502 to the relatively clean external sludge chamber. Water is introduced and then pressurized by a high-pressure water pump 1501. The water flow is then controlled by a valve in a three-way pipe 1505, spraying outwards from nozzles 1508 installed on the outer walls of cleaning pipes 1507, 1509, or 1510. This self-cleaning process is performed on the first screen plate 1602, the third screen plate 18, and the second screen plate 1701 inside the outer casing 1, which are used to separate solid waste from liquid waste, prevents clogging, and ensures normal operation. The cleaning process is simple and efficient, requiring no manual entry into the outer casing 1. (Sludge chamber...) The sludge chamber 9 is also equipped with a second suction pump 11. The suction pump 11 is equipped with a filter screen on the outside, which can block large pieces of solid waste. The suction pump 11 can suck out some of the wastewater generated during the flushing of the sludge chamber 9, reduce the water content of the solid waste in the sludge chamber 9, and facilitate the treatment of the solid waste in the sludge chamber 9 by the staff during subsequent use. The internal capacity of the sludge chamber 9 can be set according to the actual needs of use, and the treatment method of the solid waste in the sludge chamber 9 is a common existing technology, which will not be described in detail here.

[0056] After the first separation component 16 and the second separation component 17 have been cleaned, the swing rod 603 is adjusted to be placed in the horizontal direction. Then, by applying force to the slide rod 2301, the first separation component 16 and the second separation component 17 are pulled back to their initial positions, so that the first screen plate 1602, the third screen plate 18 and the second screen plate 1701 are distributed vertically, and the three screen plates are all set directly below the water inlet pipe 2.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning sewage lifting apparatus comprising an outer casing (1), characterised in that: The inner bottom surface of the shell body (1) is fixedly installed with a support block one (13), the inner portion of the shell body (1) is fixedly installed with a support block two (14) above the support block one (13), the support block one (13) and the support block two (14) separate the inner portion of the shell body (1) into a sewage cavity (8) and a sludge cavity (9), the upper surface of the shell body (1) is fixedly installed with a water inlet pipe (2) directly above the sewage cavity (8), the bottom surface of the sewage cavity (8) is fixedly installed with a suction pump one (10), the output end of the suction pump one (10) is fixedly installed with a water outlet pipe (3), the inner portion of the sludge cavity (9) is fixedly installed with a suction pump two (11), the output end of the suction pump two (11) is fixedly installed with a sewage discharge pipe (12), the inner portion of the shell body (1) is further fixedly installed with a second fixed plate (21) and a first fixed plate (19), the upper surface of the second fixed plate (21) and the support block two (14) jointly support a first separation assembly (16), the first separation assembly (16) comprises a separation channel (1601), the bottom surface of the separation channel (1601) is fixedly installed with a first sieve plate (1602), the end outer wall of the second fixed plate (21) is rotatably installed with a third sieve plate (18), the outer portion of the shell body (1) is provided with a traction assembly (4) used in cooperation with the third sieve plate (18), the upper surface of the support block one (13) is slidably connected with a second separation assembly (17) below the third sieve plate (18), the second separation assembly (17) comprises a second sieve plate (1701), the end of the second sieve plate (1701) is fixedly installed with an extension block (1702); The inner portion of the shell body (1) is provided with a cleaning assembly (15), the cleaning assembly (15) comprises a high-pressure water pump (1501) installed in the inner portion of the support block two (14), the output end of the high-pressure water pump (1501) is fixedly installed with a water delivery pipe (1503), the inner portion of the support block two (14) is provided with a through slot (1504) at the circumferential side of the water delivery pipe (1503), the end of the water delivery pipe (1503) is fixedly installed with a tee pipe (1505), three outlets of the tee pipe (1505) are respectively fixedly installed with a cleaning pipe one (1507), a cleaning pipe two (1509) and a cleaning pipe three (1510), the outer wall of each of the cleaning pipe one (1507), the cleaning pipe two (1509) and the cleaning pipe three (1510) is fixedly installed with a plurality of nozzles (1508); The inner wall of the shell body (1) at both sides of the support block two (14) is provided with a giving slot, the giving slot is installed with an adjusting assembly (6), the adjusting assembly (6) specifically comprises two fixed shafts (604) fixedly installed in the inner portion of the giving slot, the outer wall of each of the two fixed shafts (604) is rotatably installed with a swing rod (603), the end of each of the two swing rods (603) is fixedly installed with a fixed rod (1506), the tee pipe (1505) is fixed between the two fixed rods (1506).

2. A self-cleaning sewage-lifting apparatus according to claim 1, characterised in that: The first separation assembly (16) and the second separation assembly (17) are provided with a connecting assembly (23) near one end of the sludge cavity (9), the connecting assembly (23) comprises a sliding rod (2301) rotatably arranged on the upper surface of the first separation assembly (16), and the connecting assembly (23) further comprises a connecting rod (2303) arranged between the first separation assembly (16) and the second separation assembly (17), both ends of the connecting rod (2303) are rotatably connected with the ends of the separation channel (1601) and the ends of the extension block (1702) respectively, and the inside of the support block two (14) is provided with a second sliding groove (22) matched with the connecting rod (2303), both of the two swing rods (603) are provided with a first sliding groove (605) penetratingly arranged, a lifting rod (602) is rotatably arranged in the first sliding groove (605), and the end of the lifting rod (602) is slidably arranged in the first sliding groove (605); the lifting rod (602) is vertically arranged, the upper end of the lifting rod (602) extends to the outside of the outer shell (1) through the upper surface of the outer shell (1), and the swing rod (603) is swung by lifting the lifting rod (602).

3. A self-cleaning sewage-lifting apparatus according to claim 2, characterised in that: The upper ends of the two lifting rods (602) located outside the outer shell (1) are fixedly provided with a cross rod (601), two symmetrical electric telescopic rods (7) are fixedly arranged on the upper surface of the outer shell (1) below the cross rod (601), and the output ends of the electric telescopic rods (7) are fixedly connected with the bottom surface of the cross rod (601).

4. A self-cleaning sewage-lifting apparatus according to claim 3, characterised in that: The upper surface of the outer shell (1) is provided with a third sliding groove (2304) penetratingly arranged and matched with the sliding rod (2301), the upper end of the sliding rod (2301) extends to the outside of the outer shell (1) through the inside of the third sliding groove (2304), and the upper end of the sliding rod (2301) is fixedly provided with an anti-dropping block (2302) on the outer shell (1).

5. A self-cleaning sewage-lifting apparatus according to claim 4, characterised in that: The upper surface of the outer shell (1) is movably connected with a sealing cover (5) outside the third sliding groove (2304) and the sliding rod (2301), the lower end of the sealing cover (5) is movably connected with a plurality of bolts, and the sealing cover (5) is fixed on the upper surface of the outer shell (1) through the plurality of bolts.

6. A self-cleaning sewage-lifting apparatus according to claim 5, wherein: The traction assembly (4) comprises a fixed frame fixedly arranged on the outer wall of the water inlet pipe (2), a winding roller (402) is rotatably arranged in the fixed frame, a traction rope (401) is fixedly connected with the outer wall of the winding roller (402), a through hole is arranged on the outer wall of the outer shell (1) one to two centimeters above the end of the third sieve plate (18), the end of the traction rope (401) extends to the inside of the outer shell (1) through the through hole and is fixedly connected with the upper surface of the end of the third sieve plate (18).

7. A self-cleaning sewage-lifting apparatus according to claim 6, characterised in that: The outer wall of the outer shell (1) above the through hole is fixedly provided with a rotatable rotating rod (403), and the traction rope (401) is in contact with the outer wall of the rotating rod (403).

8. A self-cleaning sewage-lifting apparatus according to claim 7, characterised in that: The second fixed plate (21) and the first fixed plate (19) are fixedly provided with a partition plate (20), a plurality of air slots are penetratingly arranged on the partition plate (20).

9. A self-cleaning sewage-lifting apparatus according to claim 8, characterised in that: The input end of the high-pressure water pump (1501) is fixedly provided with a water guide pipe (1502) extending through the inside of the sludge cavity (9) to the outside of the outer shell (1).

10. A self-cleaning sewage-lifting apparatus according to claim 9, characterised in that: The first separation assembly (16) and the second separation assembly (17) are fixedly provided with circular columns on the two sides of the outer wall of one end of the sewage cavity (8), and the two inner walls of the outer shell (1) are provided with fourth sliding grooves matched with the circular columns, and the length of the fourth sliding grooves is the same as that of the third sliding grooves (2304).

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