Sewage lifting device with crushing function

Abstract

The utility model relates to a sewage lifting device with a smashing function, which comprises a sewage tank, a smashing mechanism, a cylindrical filter screen, a cutting type sewage pump, a liquid level sensor and a controller, the sewage tank is provided with a water inlet, and the upper end and the lower end of the cylindrical filter screen are respectively fixed at the inner top and the inner bottom of the sewage tank. A sewage port is formed in the side portion, corresponding to the water inlet, of the cylindrical filter screen, one end of a sewage pipe sequentially penetrates through the water inlet and the sewage port to enter the cylindrical filter screen, the smashing mechanism is fixed to the outer top of the sewage tank, the smashing end of the smashing mechanism penetrates into the sewage tank and is located in the cylindrical filter screen, and the cutting type sewage pump is fixed to the inner bottom of the sewage tank. The blow-off pipe penetrates through the top of the sewage tank, and the bottom end of the blow-off pipe is communicated with the output end of the cutting type sewage pump; the controller is electrically connected with the smashing mechanism, the cutting type sewage pump and the liquid level sensor. The utility model provides a sewage lifting device with a crushing function, which belongs to the technical field of sewage treatment, has a good crushing effect and avoids the blockage of a whole pipeline.

Description

Technical Field

[0001] The utility model relates to a sewage lifting device with a crushing function, belonging to the technical field of sewage treatment. Background Art

[0002] Sewage lifting devices are mainly used for toilet sewage discharge in medium and large places such as high-rise residential buildings with basements, underground shopping malls, schools, hospitals, villas, etc. During use, it is inevitable that some waste will be mixed in the sewage, such as: cloth, paper towels, hard residues and other dirt. The old sewage lifting device relies entirely on the cutting pump to complete the shredding of waste, but the cutting pump cannot shred some larger and harder cloth, paper towels, and hard residues. Over time, these waste residues will block or jam the pump, and in severe cases, the pump motor will burn out, posing a major safety hazard; pump blockage causes sewage to overflow the surrounding environment, and the strong odor seriously affects the on-site environment; large pieces of dirt are discharged into the sewage network, which also increases the pressure of the sewage lifting equipment's back-end network and the subsequent processing pressure; the equipment is highly corroded and difficult to clean.

[0003] Prior art CN 108396852 A is a self-cleaning sewage lifting equipment. Domestic sewage enters the pipeline grinder through the sewage main pipe or branch pipe. The pipeline grinder grinds large solid debris, suspended matter and fibrous materials in the pipeline conveying medium into small particles. The crushed sewage enters the box through the water inlet by gravity. The cam pump is started to take water from the bottom of the box and discharge the sewage into the outdoor sewage network or sewage treatment station. All sewage needs to pass through the pipeline grinder before entering the box. Even if the pipeline grinder grinds large impurities, it still hinders the circulation of sewage during the crushing process, and the crushing effect still cannot meet the needs of large-scale sewage treatment.

[0004] Prior art CN 109604010 A is a drum crushing device for a sewage lift, in which the upper end of the crushing pipe is connected to the water inlet pipe, and the lower end is connected to the sewage pump through the drainage pipe. A double-drum crushing mechanism is installed in the crushing pipe to cut large debris in the sewage, which is then filtered through the first screen plate, the second screen plate and the third screen plate. However, there is still a risk of impurities blocking the screen plate and the filter channel, which can easily cause blockage of the entire pipeline. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a sewage lifting device with a crushing function, which has a good crushing effect and avoids the blockage of the entire pipeline.

[0006] The utility model solves the above-mentioned technical problems with the following technical solutions: a sewage lifting device with a crushing function, comprising a sewage tank, a crushing mechanism, a cylindrical filter, a cutting sewage pump, a liquid level sensor for detecting the liquid level of sewage in the sewage tank, and a controller; the sewage tank is provided with a water inlet, the upper and lower ends of the cylindrical filter are respectively fixed to the inner top and inner bottom of the sewage tank, a sewage outlet is provided on the side of the cylindrical filter corresponding to the water inlet, one end of a sewage pipe passes through the water inlet and the sewage outlet in sequence and enters the cylindrical filter, the crushing mechanism is fixed to the outer top of the sewage tank and its crushing end penetrates into the sewage tank and is located in the cylindrical filter, the cutting sewage pump is fixed to the inner bottom of the sewage tank, the sewage discharge pipe passes through the top of the sewage tank and its bottom end is connected to the output end of the cutting sewage pump; the controller is electrically connected to the crushing mechanism, the cutting sewage pump and the liquid level sensor respectively.

[0007] The beneficial effects of the utility model are as follows: sewage and debris all enter the cylindrical filter screen through the sewage pipe, the cylindrical filter screen intercepts larger debris inside, the crushing end of the crushing mechanism crushes the debris, and after crushing to a certain size, it flows out of the cylindrical filter screen with sewage, and the sewage is pumped out to the outside of the sewage tank through the sewage discharge pipe by the cutting sewage pump; all the debris enters the cylindrical filter screen, and the upper and lower ends of the cylindrical filter screen are respectively fixed to the inner top and inner bottom of the sewage tank, limiting the debris to only flow out with the sewage from the gap of the cylindrical filter screen; the cylindrical filter screen is relatively high, and there are gaps around the cylindrical filter screen, and there is a large space on the top of the cylindrical filter screen to allow sewage to seep out of the cylindrical filter screen, and the sewage in the cylindrical filter screen will not be unable to be discharged due to a lot of debris, and after cutting and stirring at the crushing end, the cylindrical filter screen will not be blocked by debris, avoiding the risk of clogging the entire pipeline.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, it also includes a sealing plate, a mounting opening is opened on the top of the sewage tank, the sealing plate cover is arranged on the mounting opening, a through hole is opened on the sealing plate, the crushing mechanism is installed on the sealing plate and its crushing end passes through the through hole and is located in the cylindrical filter screen.

[0010] The beneficial effect of adopting the above further scheme is: when too much debris accumulates inside the cylindrical filter screen and the cylindrical filter screen is blocked so that sewage cannot seep out, the sealing plate is opened to clean out the debris from the cylindrical filter screen, thereby solving the blockage problem more conveniently; and it is convenient to inspect and replace the crushing end of the crushing mechanism.

[0011] Furthermore, the pulverizing mechanism includes a pulverizing motor and a plurality of pulverizing knives, the pulverizing motor is fixed on the sealing plate, the plurality of pulverizing knives are mounted on a connecting shaft connected to the output shaft of the pulverizing motor and are located in the cylindrical filter, and the pulverizing motor is electrically connected to the controller.

[0012] The beneficial effect of adopting the above further solution is that the multiple crushing knives cut the debris in the cylindrical filter screen, thereby improving the crushing effect of the debris.

[0013] Furthermore, the plurality of crushing knives are arranged at intervals, the distance between two adjacent crushing knives is 145 mm, and the angle between the projections of two adjacent crushing knives along the axial direction of the output shaft of the crushing motor is 90°.

[0014] The beneficial effects of adopting the above further scheme are: when the distance between two adjacent crushing knives is 145 mm, the crushing effect is good; and when the angle between the projections of the two adjacent crushing knives along the axial direction of the output shaft of the crushing motor is 90°, the debris is crushed more evenly.

[0015] Furthermore, it also includes a transport main pipe, there are multiple cutting type sewage pumps, and the multiple cutting type sewage pumps are fixed at the bottom of the sewage tank. Multiple sewage pipes pass through the top of the sewage tank and their bottom ends are respectively connected to the output ends of the multiple cutting type sewage pumps, and the top ends are respectively connected to the transport main pipe through connecting parts.

[0016] The beneficial effects of adopting the above further scheme are: the liquid level sensor measures the liquid level of the sewage, and starts the corresponding number of cutting-type sewage pumps according to the water volume of the sewage to ensure sewage discharge and solve the problem of electricity; the sewage is collected in the main transportation pipe, and the main transportation pipe transports the sewage to the sewage treatment center.

[0017] Furthermore, the connecting parts include multiple flanges, multiple bolts and multiple connecting pipes. The multiple flanges are respectively installed on the top ends of the multiple sewage pipes and one end of the multiple connecting pipes. Two adjacent flanges are connected by the multiple bolts. The multiple sewage pipes and the multiple connecting pipes are connected by the multiple flanges. The other ends of the multiple connecting pipes are connected to the main conveying pipe.

[0018] The beneficial effect of adopting the above further scheme is that the connecting pipe and the sewage pipe are connected by a flange, and the flange is located outside the sewage tank. When the sewage pipe is blocked by sludge, it is only necessary to remove the bolts and disconnect the sewage pipe and the connecting pipe connected by the flange. The pipeline can be unblocked from the sewage to the outside, and there is no need to enter the sewage tank for maintenance, which is more convenient.

[0019] Furthermore, it also includes a base, which is fixed to the bottom of the sewage tank, and a plurality of cutting-type sewage pumps are fixed on the base.

[0020] The beneficial effect of adopting the above further scheme is that the base is fixed at the bottom of the sewage tank, and the cutting type sewage pump is more conveniently fixed inside the sewage tank through the base, and all the cutting type sewage pumps can be conveniently removed from the sewage tank at one time during maintenance.

[0021] Furthermore, it also includes a box cover, the top of the sewage tank is provided with an inspection port, and the box cover is arranged on the inspection port.

[0022] Furthermore, it also includes an emptying valve. A sewage outlet is provided at the bottom of the sewage tank, and the emptying valve is installed on the sewage outlet.

[0023] The beneficial effect of adopting the above further scheme is: when cleaning the sewage tank, clean water is injected into the sewage tank, and the sewage valve is opened to drain the water, so as to facilitate the cleaning of the sewage tank.

[0024] Furthermore, it also includes a cleaning mechanism, which includes a cleaning pipe, two nozzles and a solenoid valve. One end of the cleaning pipe penetrates into the sewage tank, and the other end is connected to an external water source. The two nozzles are installed on the cleaning pipe and are arranged toward the cylindrical filter and the inner wall of the sewage tank respectively. The solenoid valve is installed on the cleaning pipe, and the solenoid valve is electrically connected to the controller.

[0025] The beneficial effects of adopting the above-mentioned further scheme are: clean water is passed into the cleaning pipe, and the two nozzles spray respectively corresponding to the cylindrical filter screen and the inner wall of the sewage tank, so as to clean the sludge on the cylindrical filter screen and the inner wall of the sewage tank in time to prevent blockage caused by long-term accumulation, and the blocked part of the cylindrical filter screen can also be sprayed to flush away the debris, thereby solving the blockage problem of some parts of the cylindrical filter screen; the solenoid valve controls the water inlet more intelligently. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a sewage lifting device with a crushing function without a sewage tank according to the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a crushing mechanism in a sewage lifting device with a crushing function according to the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a cylindrical filter screen and a sewage pipe in a sewage lifting device with a crushing function according to the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of a sewage lifting device with a crushing function according to the utility model;

[0030] Figure 5 for Figure 4 main view.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1- sewage tank, 2- crushing mechanism, 21- crushing motor, 22- crushing knife, 3- cylindrical filter, 4- cutting type sewage pump, 5- liquid level sensor, 6- cleaning mechanism, 61- cleaning pipe, 62- nozzle, 63- solenoid valve, 7- sealing plate, 8- connecting piece, 81- flange, 82- connecting pipe, 9- main conveying pipe, 10- base, 11- box cover, 12- drain valve, 13- drain pipe, 14- sewage pipe, 15- motor support, 16- bearing, 17- connecting shaft. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] The utility model aims to provide a sewage lifting device with a crushing function to solve the problems existing in the prior art, with good crushing effect and avoiding blockage of the entire pipeline.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] The utility model provides a sewage lifting device with a crushing function, such as Figures 1 to 5 As shown, it includes a sewage tank 1, a crushing mechanism 2, a cylindrical filter 3, a cutting sewage pump 4, a liquid level sensor 5 for detecting the liquid level of sewage in the sewage tank 1, and a controller. The sewage tank 1 is provided with a water inlet, the upper and lower ends of the cylindrical filter 3 are respectively fixed at the inner top and inner bottom of the sewage tank 1, and the side of the cylindrical filter 3 is provided with a sewage outlet corresponding to the water inlet. One end of the sewage pipe 14 passes through the water inlet and the sewage outlet in sequence and enters the cylindrical filter 3. The crushing mechanism 2 is fixed to the outer top of the sewage tank 1 and its crushing end penetrates the sewage tank 1 and is located in the cylindrical filter 3. The cutting sewage pump 4 is fixed to the inner bottom of the sewage tank 1, and the sewage pipe passes through the top of the sewage tank 1 and its bottom end is connected to the output end of the cutting sewage pump 4; the controller is electrically connected to the crushing mechanism 2, the cutting sewage pump 4 and the liquid level sensor 5 respectively.

[0037] The utility model provides a sewage lifting device with a crushing function. The sewage and debris all enter the cylindrical filter screen 3 through the sewage pipe 14. The cylindrical filter screen 3 intercepts larger debris inside. The crushing end of the crushing mechanism 2 crushes the debris. After crushing to a certain size, it flows out of the cylindrical filter screen 3 with the sewage. The sewage is pumped out to the outside of the sewage tank 1 by the cutting sewage pump 4 through the sewage discharge pipe; the debris all enters the cylindrical filter screen 3, and the upper and lower ends of the cylindrical filter screen 3 are respectively fixed to the inner top and inner bottom of the sewage tank 1, limiting the debris to only flow out with the sewage from the gap of the cylindrical filter screen 3; the cylindrical filter screen 3 is relatively high, and there are gaps around the cylindrical filter screen 3. There is a large space on the top of the cylindrical filter screen 3 to allow sewage to seep out of the cylindrical filter screen 3, and the sewage in the cylindrical filter screen 3 will not be unable to be discharged due to a lot of debris. After cutting and stirring at the crushing end, the cylindrical filter screen 3 will not be blocked by debris, avoiding the risk of blocking the entire pipeline.

[0038] In a specific embodiment of the utility model, a sealing plate 7 is further included. A mounting opening is provided on the top of the sewage tank 1. The sealing plate 7 is covered on the mounting opening. A through hole is provided on the sealing plate 7. The crushing mechanism 2 is installed on the sealing plate 7 and its crushing end passes through the through hole and is located in the cylindrical filter screen 3.

[0039] When too much debris accumulates inside the cylindrical filter screen 3 and the cylindrical filter screen 3 is blocked so that sewage cannot seep out, the sealing plate 7 is opened to clean out the debris from the cylindrical filter screen 3, thereby solving the blockage problem more conveniently; and it is convenient to inspect and replace the crushing end of the crushing mechanism 2.

[0040] In a specific embodiment of the present invention, the crushing mechanism 2 includes a crushing motor 21 and a plurality of crushing knives 22. The crushing motor 21 is fixed on the sealing plate 7. The plurality of crushing knives 22 are installed on a connecting shaft 17 connected to the output shaft of the crushing motor 21 and are located in the cylindrical filter screen 3. The crushing motor 21 is electrically connected to the controller.

[0041] The plurality of crushing knives 22 cut the debris in the cylindrical filter screen 3 to improve the crushing effect of the debris.

[0042] Preferably, the motor support 15 is fixed on the sealing plate 7, the crushing motor is fixed on the motor support 15, the output shaft of the crushing motor is transmission connected to the connecting shaft 17 through a coupling, the inner ring of the bearing 16 is arranged corresponding to the through hole and its outer ring is fixed on the sealing plate 7, and the connecting shaft 17 passes through the inner ring of the bearing 16 and is fixedly connected thereto.

[0043] In a specific embodiment of the present invention, a plurality of crushing knives 22 are arranged at intervals, the distance between two adjacent crushing knives 22 is 145 mm, and the angle between the projections of two adjacent crushing knives 22 along the axial direction of the output shaft of the crushing motor 21 is 90°.

[0044] When the distance between two adjacent crushing knives 22 is 145 mm, the crushing effect is good; and when the angle between the projections of the two adjacent crushing knives 22 along the axial direction of the output shaft of the crushing motor 21 is 90°, the debris is crushed more evenly.

[0045] In a specific embodiment of the utility model, it also includes a conveying main pipe 9, a plurality of cutting-type sewage pumps 4, and the plurality of cutting-type sewage pumps 4 are all fixed at the bottom of the sewage tank 1, and a plurality of sewage pipes all pass through the top of the sewage tank 1 and the bottom ends thereof are respectively connected to the output ends of the plurality of cutting-type sewage pumps 4, and the top ends are respectively connected to the conveying main pipe 9 through connecting pieces 8.

[0046] The liquid level sensor 5 measures the liquid level of the sewage, and starts a corresponding number of cutting-type sewage pumps 4 according to the amount of sewage to ensure sewage discharge and solve the problem of electricity; the sewage is collected in the main conveying pipe 9, and the main conveying pipe 9 conveys the sewage to the sewage treatment center.

[0047] In a specific embodiment of the utility model, the connecting member 8 includes multiple flanges 81, multiple bolts and multiple connecting pipes 82. The multiple flanges 81 are respectively installed on the top ends of multiple sewage pipes and one end of the multiple connecting pipes 82. Two adjacent flanges 81 are connected by multiple bolts. The multiple sewage pipes and the multiple connecting pipes 82 are connected by the multiple flanges 81. The other ends of the multiple connecting pipes 82 are connected to the main conveying pipe 9.

[0048] The connecting pipe 82 and the sewage pipe are connected by a flange 81, and the flange 81 is located outside the sewage tank 1. When the sewage pipe is blocked by sludge, it is only necessary to remove the bolts, disconnect the sewage pipe and the connecting pipe 82 connected by the flange 81, and the pipeline can be cleared from the sewage to the outside. There is no need to enter the sewage tank 1 for maintenance, which is more convenient.

[0049] In a specific embodiment of the utility model, a base 10 is further included. The base 10 is fixed to the bottom of the sewage tank 1 , and a plurality of cutting-type sewage pumps 4 are fixed on the base 10 .

[0050] The base 10 is fixed to the bottom of the sewage tank 1 , and the cutting sewage pump 4 is more conveniently fixed inside the sewage tank 1 through the base 10 , and all the cutting sewage pumps 4 can be conveniently taken out from the sewage tank 1 at one time during maintenance.

[0051] In a specific embodiment of the utility model, a box cover 11 is further included. An inspection opening is opened on the top of the sewage tank 1, and the box cover 11 is covered on the inspection opening.

[0052] In a specific embodiment of the utility model, a drain valve 12 is further included. A drain outlet is provided at the bottom of the sewage tank 1, and the drain valve 12 is installed on the drain outlet.

[0053] When cleaning the sewage tank 1 , clean water is injected into the sewage tank 1 , and the sewage valve 13 is opened to discharge the water, so as to facilitate cleaning of the sewage tank 1 .

[0054] In a specific embodiment of the utility model, a cleaning mechanism 6 is also included. The cleaning mechanism 6 includes a cleaning pipe 61, two nozzles 62 and a solenoid valve 63. One end of the cleaning pipe 61 penetrates into the sewage tank 1, and the other end is connected to an external water source. The two nozzles 62 are installed on the cleaning pipe 61 and are arranged toward the cylindrical filter screen 3 and the inner wall of the sewage tank 1 respectively. The solenoid valve 63 is installed on the cleaning pipe 61, and the solenoid valve 63 is electrically connected to the controller.

[0055] Clean water is introduced into the cleaning pipe 61, and the two nozzles 62 spray correspondingly to the cylindrical filter screen 3 and the inner wall of the sewage tank 1 respectively, so as to clean the silt on the inner wall of the cylindrical filter screen 3 and the sewage tank 1 in time to prevent blockage caused by long-term accumulation, and can also spray the blocked part of the cylindrical filter screen 3 to flush away the debris, thereby solving the problem of partial blockage of the cylindrical filter screen 3; the solenoid valve 63 controls the water inlet more intelligently.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage lifting device with a crushing function, characterized in that: The invention comprises a sewage tank (1), a pulverizing mechanism (2), a cylindrical filter screen (3), a cutting sewage pump (4), a liquid level sensor (5) for detecting the liquid level of sewage in the sewage tank (1), and a controller. The sewage tank (1) is provided with a water inlet. The upper and lower ends of the cylindrical filter screen (3) are respectively fixed to the inner top and inner bottom of the sewage tank (1). The side of the cylindrical filter screen (3) is provided with a sewage outlet corresponding to the water inlet. One end of a sewage pipe (14) passes through the water inlet and the sewage outlet in sequence and enters the cylindrical filter screen (1). The filter screen (3) is provided with a pulverizing mechanism (2) fixed on the outer top of the sewage tank (1) and its pulverizing end penetrates into the sewage tank (1) and is located in the cylindrical filter screen (3); the cutting-type sewage pump (4) is fixed on the inner bottom of the sewage tank (1); a sewage discharge pipe (13) passes through the top of the sewage tank (1) and its bottom end is connected to the output end of the cutting-type sewage pump (4); and the controller is electrically connected to the pulverizing mechanism (2), the cutting-type sewage pump (4) and the liquid level sensor (5) respectively.

2. The sewage lifting device with crushing function according to claim 1 is characterized in that: It also comprises a sealing plate (7), the top of the sewage tank (1) is provided with a mounting opening, the sealing plate (7) is covered on the mounting opening, the sealing plate (7) is provided with a through hole, the pulverizing mechanism (2) is installed on the sealing plate (7) and its pulverizing end passes through the through hole and is located in the cylindrical filter screen (3).

3. The sewage lifting device with crushing function according to claim 2 is characterized in that: The pulverizing mechanism (2) comprises a pulverizing motor (21) and a plurality of pulverizing knives (22); the pulverizing motor (21) is fixed on the sealing plate (7); the plurality of pulverizing knives (22) are mounted on a connecting shaft (17) connected to an output shaft of the pulverizing motor (21) and are located in the cylindrical filter screen (3); and the pulverizing motor (21) is electrically connected to the controller.

4. The sewage lifting device with crushing function according to claim 3 is characterized in that: The plurality of crushing knives (22) are arranged at intervals, the distance between two adjacent crushing knives (22) is 145 mm, and the angle between the projections of two adjacent crushing knives (22) along the axial direction of the output shaft of the crushing motor (21) is 90°.

5. The sewage lifting device with crushing function according to claim 1 is characterized in that: It also includes a main delivery pipe (9), wherein there are a plurality of cutting-type sewage pumps (4), each of which is fixed to the bottom of the sewage tank (1), and a plurality of sewage discharge pipes (13) that penetrate the top of the sewage tank (1) and whose bottom ends are respectively connected to the output ends of the plurality of cutting-type sewage pumps (4), and whose top ends are respectively connected to the main delivery pipe (9) via connectors (8).

6. The sewage lifting device with crushing function according to claim 5 is characterized in that: The connecting member (8) comprises a plurality of flanges (81), a plurality of bolts and a plurality of connecting pipes (82); the plurality of flanges (81) are respectively installed at the top ends of the plurality of sewage pipes (13) and one ends of the plurality of connecting pipes (82); two adjacent flanges (81) are connected by the plurality of bolts; the plurality of sewage pipes (13) and the plurality of connecting pipes (82) are connected by the plurality of flanges (81); and the other ends of the plurality of connecting pipes (82) are connected to the main conveying pipe (9).

7. The sewage lifting device with crushing function according to claim 5 is characterized in that: It also comprises a base (10), wherein the base (10) is fixed to the bottom of the sewage tank (1), and a plurality of cutting-type sewage pumps (4) are fixed on the base (10).

8. A sewage lifting device with a crushing function according to any one of claims 1 to 7, characterized in that: It also comprises a box cover (11); an inspection opening is provided on the top of the sewage tank (1), and the box cover (11) is arranged on the inspection opening.

9. A sewage lifting device with a crushing function according to any one of claims 1 to 7, characterized in that: It also comprises a drain valve (12); a drain outlet is provided at the bottom of the sewage tank (1); and the drain valve (12) is installed on the drain outlet.

10. A sewage lifting device with a crushing function according to any one of claims 1 to 7, characterized in that: The invention also comprises a cleaning mechanism (6), the cleaning mechanism (6) comprising a cleaning pipe (61), two nozzles (62) and a solenoid valve (63); one end of the cleaning pipe (61) penetrates into the sewage tank (1), and the other end is connected to an external water source; the two nozzles (62) are both mounted on the cleaning pipe (61) and are respectively arranged toward the cylindrical filter screen (3) and the inner wall of the sewage tank (1); the solenoid valve (63) is mounted on the cleaning pipe (61), and the solenoid valve (63) is electrically connected to the controller.

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