CN214219857U - Drainage system with main sewage draining pipe arranged outside house - Google Patents

Abstract

The utility model discloses a set up drainage system of main blow off pipe outside house, concentrate in the equipment well in unit formula house public space promptly and establish main blow off pipe, utilize the small-size sewage lifting mechanism that sets up in the bathroom to promote kitchen, bathroom, washing machine's drainage machinery to this main blow off intraductal, solved drainage/the riser of ventilating and occupied usage space in the house cover, property, leak and arouse the drawback of neighborhood dispute, solved the adverse effect that upper and lower floor drainage noise brought simultaneously. Because the drainage of a unit is all solved through a main blowdown pipe, also make the construction simpler, promoted construction speed.

Description

Drainage system with main sewage draining pipe arranged outside house

Technical Field

The utility model relates to a drainage technical field of multilayer and high-rise residence, especially a drainage system who sets up main blow off pipe outside the residence.

Background

In the traditional residential drainage design, the arrangement of a main drainage pipe is indispensable, the main drainage pipe is required to be arranged in a toilet, a kitchen and a washing machine, and a special ventilation vertical pipe is additionally arranged in a multi-storey residence with higher building standard requirements and a toilet of a high-rise residence with ten or more storeys. There are a number of disadvantages with such conventional drainage systems: firstly, occupying space. The area of the indoor toilets of the ordinary residences cannot be too large, two vertical pipes and outsourcing decoration occupy large space, and the indoor toilets are not ideal in space utilization degree and appliance arrangement. And secondly, the pipe is wasted. The main drainage pipes in the general residential building can be two to three, more than two toilets can be arranged, even four toilets can be arranged, and certain pipe manufacturing cost and labor cost can be saved undoubtedly if the drainage branch pipes can be collected on one main drainage pipe and the drainage capacity can be met. Thirdly, the property right of the main sewage discharge pipe is unclear, and neighborhood disputes are caused by water leakage. The main sewage discharge pipe used by the upper layer household passes through the inner space of the sleeve of the lower layer household, the property right attribution of the main sewage discharge pipe cannot be clear, the responsibility cannot be clear, and neighborhood disputes are easily caused by pipeline blockage and leakage. Fourthly, the noise of the drainage. Because the upper and lower floors of a house share the vertical pipe, the water using habit and the water using time of each household are different inevitably, so that some households who want to be quiet must bear the noise influence caused by the drainage of the main drainage pipe.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drainage system who sets up main blow off pipe outside house to solve the problem that above-mentioned prior art exists, no longer lay main blow off pipe in can realizing the house, other sewage pipes also can hide the construction, make the space can be neat.

In order to achieve the above object, the present invention provides the following solutions:

the utility model provides a drainage system with a main blow-off pipe arranged outside a house, which comprises a sewage raiser and a whole house pipeline system;

the whole house pipeline system comprises a toilet bowl drain pipe, a toilet drain pipe, a kitchen and bath drain pipe, a clear water inlet pipe, a pressure drain vertical pipe, a pressure drain horizontal pipe and a main drain pipe;

the sewage lifter is of a cubic structure, a first water inlet hole, a second water inlet hole and a drain hole are respectively formed in two optional side surfaces of the sewage lifter, a third water inlet hole is formed in the middle of the other side surface of the sewage lifter, and a clear water inlet hole is formed in the top surface of the sewage lifter;

one end of the closestool drain pipe is communicated with the closestool, and the other end of the closestool drain pipe is communicated with the third water inlet hole; one end of the toilet drain pipe is respectively communicated with the wash platform and the washing machine, and the other end of the toilet drain pipe is communicated with the second water inlet hole; one end of the kitchen and bath room drain pipe is communicated with the kitchen pool and the floor drain, and the other end of the kitchen and bath room drain pipe is communicated with the first water inlet hole; one end of the pressure drainage vertical pipe is communicated with one end of the pressure drainage horizontal pipe; the other end of the horizontal pressure drainage pipe is communicated with a main drainage pipe; the water drain hole is communicated with the other end of the pressure water drain vertical pipe; the clear water inlet hole is communicated with the clear water inlet pipe;

the sewage lifter is arranged at the bottom of the toilet.

Preferably, the effect that the main sewage discharge pipe is not arranged in the house sleeve is realized, and the main sewage discharge pipe is not arranged in the house sleeve, so that the space is saved for residents, the link of decoration outsourcing is omitted, and the decoration cost is also saved.

Preferably, the main sewage draining pipes are not arranged in the house sleeve, and are uniformly arranged in the pipe well, the number of the main sewage draining pipes is greatly reduced, the number of outdoor sewage wells is correspondingly reduced, the manufacturing cost is saved for the whole project engineering, and the effect of improving the attractiveness of the outdoor ground is achieved.

Preferably, the residential toilet drains water on the same floor, so that the function of the sewage lifter for receiving drainage of a floor drain of the washing machine is realized. The main sewage discharge pipe is arranged in a centralized manner in a public space, so that the problem of neighborhood disputes is avoided.

Preferably, each drain pipe in the house can be buried underground during construction and is connected with the sewage lifter so as to improve the space regularity in the sleeve, achieve the aesthetic property of decoration and overcome the defect that the drain pipe on the layer is arranged on the lower layer and affects the decoration of the lower layer.

Preferably, the bathroom can be handled by falling the board, like this the sewage lifting mechanism just can set up in, has reduced the engineering volume in later stage.

The sewage lifter comprises an electric control unit, a pumping unit, a liquid conveying unit and a fixing frame; the fixing frame is fixedly arranged on the upper side of the inner cavity of the sewage lifter and divides the inner cavity of the sewage lifter into an upper cavity and a lower cavity; the fixing frame is provided with a through hole; the delivery liquid unit is electrically connected with the electric control unit and is fixedly arranged on the upper cavity, and the pumping unit is arranged on the lower cavity and is electrically connected with the electric control unit;

the electric control unit comprises a control module, a water level limiter, a closestool sewage sensor, a toilet sewage sensor and a kitchen and bath sewage sensor; the control module is electrically connected with the water level limiter, the toilet sewage sensor, the bathroom sewage sensor and the kitchen and bath sewage sensor, and the control module is fixedly arranged on the upper cavity; the water level limiter is fixedly arranged on the inner wall of the lower cavity and is arranged below the fixing frame; the toilet sewage sensor is fixedly arranged at the upper end of the third water inlet hole; the toilet sewage sensor is fixedly arranged at the upper end of the second water inlet hole; the kitchen and bath room sewage sensor is fixedly arranged at the upper end of the water inlet hole of the first water inlet hole.

The pumping unit comprises a back flushing spray pipe, an electromagnetic three-way valve and a pumping shell; a pumping motor, a cutterhead and a centrifugal impeller are arranged in the pumping shell; the output shaft of the pumping motor is vertically downward and is fixed on the top end surface of the pumping shell through a screw, and the pumping motor is electrically connected with the control module; the end, connected with the pumping motor, of the pumping shell is a closed end, the other end of the pumping shell is an open end, and the closed end of the pumping shell is fixedly arranged on the bottom surface of the fixed frame; the cutterhead and the centrifugal impeller are in transmission connection with an output shaft of the pumping motor; the reamer disc is arranged at the bottom end of the pumping shell; the centrifugal impeller is not in contact with the pumping motor and the reamer disc and is arranged between the centrifugal impeller and the pumping motor.

A sewage draining outlet is formed in the side wall of the pumping shell; the sewage discharge outlet is opposite to the centrifugal impeller; the first interface of the electromagnetic three-way valve is communicated with a sewage draining outlet, and the electromagnetic three-way valve is electrically connected with the control module; the backflushing spray pipes are circumferentially arranged along the cross section of the lower cavity and are arranged below the water level limiter; the recoil spray pipe is communicated with a second interface of the electromagnetic three-way valve; the third interface of the electromagnetic three-way valve is communicated with the pressure drainage vertical pipe through a drainage hole; a plurality of water spray holes are formed in the backflushing spray pipe; the blowholes are circumferentially arranged and the distance between adjacent blowholes is the same.

Preferably, the spraying angle of the water spraying holes ranges from horizontal to vertical by 90 degrees and the water is sprayed towards the lower cavity. The control module controls a water level limiter, a toilet sewage sensor, a kitchen and bath sewage sensor, a pumping motor and an electromagnetic three-way valve. Through the signal of water level limiter, control module can make sewage lifting mechanism can not lead to the damage of sewage lifting mechanism because of the excessive entering of sewage. And the signals of the toilet bowl sewage sensor, the toilet sewage sensor and the kitchen and bath sewage sensor can enable the control module to know where the sewage enters the sewage lifter.

Preferably, sewage enters the lower cavity from the toilet drainage pipe, and the toilet sewage sensor is triggered. Because squatting pan sewage always has solid waste, so, the program setting control module direct control starts the pump sending motor, process the solid waste carries out abundant grinding in the cutterhead to sewage, centrifugal impeller synchronous revolution simultaneously sees off sewage the drain, control module control electromagnetism three-way valve switches over to in the pressure drainage riser passageway is impressed, pass through in the pressure drainage violently manages the inflow in the main blow off pipe.

Preferably, the sewage enters the lower cavity from the kitchen and bath drainage pipe, and the kitchen and bath sewage sensor is triggered. Because the sewage in the common kitchen and bath room is less than the solid waste and is cleaner, the program setting control module utilizes the sewage to perform back flushing on the lower cavity. The subsequent process is that the control module starts the pumping motor, controls the electromagnetic three-way valve to be switched to a back flushing spray pipe passage, presses the sewage into the back flushing spray pipe and sprays the sewage out through the water spraying holes arranged at the upper part to flush the lower cavity, and after a certain time, the control module controls the electromagnetic three-way valve to be switched to the pressure drainage vertical pipe passage and pressed into the pressure drainage vertical pipe passage, and then the sewage flows into the main drainage pipe through the pressure drainage horizontal pipe. During the period, the reamer disc still drives the centrifugal impeller to synchronously work along with the pumping motor, so that solid waste mixed in sewage is prevented from blocking the water spraying holes.

Preferably, the utility model discloses can selectively utilize waste sewage to circulate and wash, reduce the waste of water resource.

The conveying liquid unit comprises a conveying liquid control valve and a conveying pipe; the middle part of the bottom surface of the conveying liquid control valve is communicated with a conveying pipe; the conveying pipe penetrates through the through hole and keeps a water outlet of the conveying pipe and the water level limiter at the same horizontal height; the conveying pipe is communicated with a conveying liquid control valve; the conveying liquid control valve is electrically connected with the control module and is communicated with the clean water inlet pipe.

Preferably, when a user defines a cleaning mode by himself, the control module controls the conveying liquid control valve to be opened, external clean water is introduced into the lower cavity, when clean water is added to the position of the water level limiter, the water level limiter sends a signal, and the control module controls the conveying liquid control valve to be closed to stop water inflow. The program sets up control module direct control starts the pump sending motor, through the cutterhead, centrifugal impeller synchronous revolution sends out clean water the drain, control module control electromagnetism three-way valve switch to in the recoil shower pipe route is impressed, constantly circulate and erode the certain time, control module controls again electromagnetism three-way valve switch to in the pressure drainage riser route is impressed sewage in it, process the horizontal pipe of pressure drainage flows in the main sewer.

Preferably, the conveying liquid unit can be externally connected with municipal tap water or externally connected with a cleaning water pump and other peripherals, so that the problem that accumulated dirt cannot be removed even though the sewage lifting device is subjected to back washing is avoided.

Preferably, the control module can be by user-defined clearance mode, also can use the clearance mode that has set for in advance, improves sewage hoisting device's the convenience of use.

The elevation of the water inlet end of the horizontal pressure drainage pipe is higher than that of the water outlet end, and the connecting line of the two ends forms an included angle of 0.1-1 degrees with the horizontal plane; the water inlet end level of the toilet drain pipe, the toilet drain pipe and the kitchen and bath drain pipe is higher than the water outlet end, and the connecting line of the two ends forms an included angle of 0.1-2.25 degrees with the horizontal plane.

The pressure drainage vertical pipe and the pressure drainage horizontal pipe are embedded into the wall body; the length of the pressure drainage vertical pipe is 2m-3m, and the length of the pressure drainage horizontal pipe is 30m-70 m.

Preferably, the length of the drainage pipeline is limited, so that the overload work of the sewage lifter can be avoided, and the loss of an owner is reduced.

The utility model discloses a following technological effect:

1) the laying of the main drainage pipes is greatly reduced, the use space in the building can be greatly improved, the space is regular, and the utilization rate is improved.

2) The use of the main sewage discharge pipe is reduced, the use amount of the main sewage discharge pipe can be reduced, the use amount of corresponding materials is reduced, the waste of social resources is avoided, and the construction cost is reduced.

3) The position of moving of main blowdown pipe has just also reduced a property right dispute source to each owner in the floor, and main blowdown pipe is far away from the house moreover, and the noise of drainage is reduction by a wide margin also, has improved the comfort level of house.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is an internal structure view of a sewage lifter.

Fig. 2 is an external structure view of the sewage lifter.

FIG. 3 is a schematic view of the exterior opening of the sewage lifter.

FIG. 4 is a schematic front view of a drainage system with a main waste pipe outside the dwelling.

FIG. 5 is a schematic top view of a drain system with a main waste pipe located outside the dwelling.

Wherein, 100-sewage raiser, 101-conveying liquid control valve, 102-conveying pipe, 103-fixing frame, 104-control module, 105-pumping shell, 106 pumping motor, 107-centrifugal impeller, 108-cutterhead, 109-sewage outlet, 110-electromagnetic three-way valve, 111-closestool sewage sensor, 112-bathroom sewage sensor, 113-kitchen bathroom sewage sensor, 114-water level limiter, 115-backflushing spray pipe, 116-first water inlet, 117-second water inlet, 118-third water inlet, 119-water outlet, 120-clear water inlet, 1-water outlet, 2-toilet water outlet, 3-kitchen bathroom water outlet, 4-clear water inlet, 5-pressure water outlet vertical pipe, 6-horizontal pressure drainage pipe, 7-main drainage pipe, 8-kitchen sink, 9-floor drain, 10-toilet seat, 11-washing machine, and 12-washing table.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The utility model provides a drainage system with a main blow-off pipe arranged outside a house, which comprises a sewage raiser 100 whole house pipeline system;

the whole house pipeline system comprises a toilet bowl drain pipe 1, a toilet drain pipe 2, a kitchen and bath drain pipe 3, a clear water inlet pipe 4, a pressure drain vertical pipe 5, a pressure drain horizontal pipe 6 and a main drain pipe 7;

the sewage lifting device 100 is of a cubic structure, two arbitrary side surfaces of the sewage lifting device are respectively provided with a first water inlet hole 116, a second water inlet hole 117 and a water outlet hole 119, the middle part of the other side surface is provided with a third water inlet hole 118, and the top surface is provided with clean water inlet 120;

one end of the closestool drain pipe 1 is communicated with the closestool 10, and the other end is communicated with the third water inlet hole 118; one end of the toilet drain pipe 2 is respectively communicated with the wash platform 12 and the washing machine 11, and the other end is communicated with the second water inlet hole 117; one end of the kitchen and bath room drain pipe 3 is communicated with the kitchen pool 8 and the floor drain 9, and the other end is communicated with the first water inlet hole 116; one end of the vertical pressure drainage pipe 5 is communicated with one end of the horizontal pressure drainage pipe 6; the other end of the horizontal pressure drainage pipe 6 is communicated with a main drainage pipe 7; the water discharge hole 119 is communicated with the other end of the pressure water discharge vertical pipe 5; the clear water inlet hole 120 is communicated with the clear water inlet pipe 4;

the sewage lifter 100 is disposed at the bottom of the toilet.

The sewage lifter 100 comprises an electric control unit, a pumping unit, a liquid conveying unit and a fixing frame 103; the fixing frame 103 is fixedly arranged on the upper side of the inner cavity of the sewage lifter 100 and divides the inner cavity of the sewage lifter 100 into an upper cavity and a lower cavity; the fixing frame 103 is provided with a through hole; the delivery liquid unit is electrically connected with the electric control unit and is fixedly arranged on the upper cavity, and the pumping unit is arranged on the lower cavity and is electrically connected with the electric control unit;

the electric control unit comprises a control module 104, a water level limiter 114, a closestool sewage sensor 111, a toilet sewage sensor 112 and a kitchen and bath sewage sensor 113; the control module 104 is electrically connected with the water level limiter 114, the toilet wastewater sensor 111, the bathroom wastewater sensor 112 and the kitchen and bath wastewater sensor 113, and the control module 104 is fixedly arranged on the upper cavity; the water level limiter 114 is fixedly arranged on the inner wall of the lower cavity and is arranged below the fixing frame 103; the toilet sewage sensor 111 is fixedly arranged at the upper end of the third water inlet hole 118; the toilet sewage sensor 112 is fixedly arranged at the upper end of the second water inlet hole 117; the kitchen and bath sewage sensor 113 is fixedly arranged at the upper end of the water inlet of the first water inlet 116.

The pumping unit comprises a back flushing spray pipe 115, an electromagnetic three-way valve 110 and a pumping shell 105; a pumping motor 106, a reamer disk 108 and a centrifugal impeller 107 are arranged in the pumping shell 105; an output shaft of the pumping motor 106 is vertically downward and fixed on the top end face of the pumping shell 105 through a screw, and the pumping motor 106 is electrically connected with the control module 104; the connecting end of the pumping shell 105 and the pumping motor 106 is a closed end, the other end is an open end, and the closed end of the pumping shell 105 is fixedly arranged on the bottom surface of the fixing frame 103; the cutterhead 108 and the centrifugal impeller 107 are in transmission connection with an output shaft of the pumping motor 106; the cutterhead 108 is disposed at the bottom end of the pumping housing 105; the centrifugal impeller 107 is not in contact with the pumping motor 106 and the cutterhead 108, and is interposed therebetween.

A sewage outlet 109 is formed in the side wall of the pumping shell 105; the sewage outlet 109 faces the centrifugal impeller 107; a first interface of the electromagnetic three-way valve 110 is communicated with the sewage outlet 109, and the electromagnetic three-way valve 110 is electrically connected with the control module 104; the backflushing spray pipes 115 are circumferentially arranged along the cross section of the lower cavity and are arranged below the water level limiter 114; the recoil spray pipe 115 is communicated with a second interface of the electromagnetic three-way valve 110; the third port of the three-way solenoid valve 110 is communicated with the pressure drainage stand pipe 5 through a drainage hole 119. A plurality of water spray holes are formed on the back flushing spray pipe 115; the blowholes are circumferentially arranged and the distance between adjacent blowholes is the same.

The delivery liquid unit comprises a delivery liquid control valve 101 and a delivery pipe 102; the middle part of the bottom surface of the conveying liquid control valve 101 is communicated with a conveying pipe 102; the delivery pipe 102 passes through the through hole, and the water outlet of the delivery pipe 102 and the water level limiter 114 are kept at the same horizontal height; the delivery pipe 102 is communicated with the delivery liquid control valve 101; the conveying liquid control valve 101 is electrically connected with the control module 104, and the conveying liquid control valve 101 is communicated with the clean water inlet pipe 4.

The elevation of the water inlet end of the horizontal pressure drainage pipe 6 is higher than that of the water outlet end, and the connecting line of the two ends forms an included angle of 0.1-1 degrees with the horizontal plane; the water inlet end level of the toilet bowl water outlet pipe 1, the toilet water outlet pipe 2 and the kitchen and bath water outlet pipe 3 is higher than the water outlet end, and the connecting line of the two ends forms an included angle of 0.1-2.25 degrees with the horizontal plane.

The vertical pressure drainage pipe 5 and the horizontal pressure drainage pipe 6 are embedded into the wall body; the length of the vertical pressure drainage pipe 5 is 2m-3m, and the length of the horizontal pressure drainage pipe 6 is 30m-70 m.

In an embodiment of the present invention, a dialysis membrane can be added to the front end of the back flush shower 115 to purify the sewage by filtering the macromolecular substances in the sewage. Then, the electromagnetic three-way valve 110 is linked with the pumping motor 106, the sewage purification and the lower cavity flushing are completed through forward rotation, the purified water is used for flushing the dirt of the dialysis membrane through reverse rotation, the electromagnetic three-way valve 110 is adjusted to the position of the pressure drainage vertical pipe 5, and the sewage and the dirt are discharged together.

In another embodiment of the present invention, the fixing frame 103 is integrally formed with a partition board, which separates the top surface of the fixing frame 103 into two regions, thereby further preventing the intrusion of water vapor from causing the electrical failure.

The utility model discloses a further embodiment, the scheme of this application can be according to the nimble quantity that increases and decreases sewage lifting mechanism 100 of cover inner area to avoid because sewage lifting mechanism 100 that the blowdown distance overlength leads to can't satisfy the operation requirement.

The utility model discloses possess following outstanding advantage:

1) the laying of the main drainage pipes is greatly reduced, the use space in the building can be greatly improved, the space is regular, and the utilization rate is improved.

2) The use of the main sewage discharge pipe is reduced, the use amount of the main sewage discharge pipe can be reduced, the use amount of corresponding materials is reduced, the waste of social resources is avoided, and the construction cost is reduced.

3) The position of moving of main blowdown pipe has just also reduced a property right dispute source to each owner in the floor, and main blowdown pipe is far away from the house moreover, and the noise of drainage is reduction by a wide margin also, has improved the comfort level of house.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims (8)

1. A drainage system for arranging a main blow-off pipe outside a house comprises a sewage raiser (100) and a whole house pipeline system;

the whole house pipeline system comprises a toilet bowl drain pipe (1), a toilet drain pipe (2), a kitchen and bath drain pipe (3), a clear water inlet pipe (4), a pressure drain vertical pipe (5), a pressure drain horizontal pipe (6) and a main drain pipe (7);

the sewage lifter (100) is of a cubic structure, two arbitrary side surfaces of the sewage lifter are respectively provided with a first water inlet hole (116), a second water inlet hole (117) and a water outlet hole (119), the middle part of the other side surface is provided with a third water inlet hole (118), and the top surface is provided with a clear water inlet hole (120);

one end of the closestool drain pipe (1) is communicated with the closestool (10), and the other end of the closestool drain pipe is communicated with the third water inlet hole (118); one end of the toilet drain pipe (2) is respectively communicated with the wash platform (12) and the washing machine (11), and the other end of the toilet drain pipe is communicated with the second water inlet hole (117); one end of the kitchen and bath room drain pipe (3) is communicated with the kitchen pool (8) and the floor drain (9), and the other end of the kitchen and bath room drain pipe is communicated with the first water inlet hole (116); one end of the pressure drainage vertical pipe (5) is communicated with one end of the pressure drainage horizontal pipe (6); the other end of the horizontal pressure drainage pipe (6) is communicated with a main drainage pipe (7); the water drain hole (119) is communicated with the other end of the pressure water drain vertical pipe (5); the clear water inlet hole (120) is communicated with the clear water inlet pipe (4);

the sewage lifter (100) is arranged at the bottom of the toilet.

2. A drainage system for providing a main sewer outside a dwelling as claimed in claim 1, wherein: the sewage lifter (100) comprises an electric control unit, a pumping unit, a liquid conveying unit and a fixing frame (103); the fixing frame (103) is fixedly arranged on the upper side of the inner cavity of the sewage lifter (100) and divides the inner cavity of the sewage lifter (100) into an upper cavity and a lower cavity; the fixing frame (103) is provided with a through hole; the delivery liquid unit is electrically connected with the electric control unit and is fixedly arranged on the upper cavity, and the pumping unit is arranged on the lower cavity and is electrically connected with the electric control unit;

the electric control unit comprises a control module (104), a water level limiter (114), a closestool sewage sensor (111), a toilet sewage sensor (112) and a kitchen and bath sewage sensor (113); the control module (104) is electrically connected with the water level limiter (114), the closestool sewage sensor (111), the bathroom sewage sensor (112) and the kitchen and bath sewage sensor (113), and the control module (104) is fixedly installed on the upper cavity; the water level limiter (114) is fixedly arranged on the inner wall of the lower cavity and is arranged below the fixing frame (103); the closestool sewage sensor (111) is fixedly arranged at the upper end of the third water inlet hole (118); the toilet sewage sensor (112) is fixedly arranged at the upper end of the second water inlet hole (117); the kitchen and bath room sewage sensor (113) is fixedly arranged at the upper end of the water inlet of the first water inlet (116).

3. A drainage system for providing a main sewer outside a dwelling as claimed in claim 2, wherein: the pumping unit comprises a backflushing spray pipe (115), an electromagnetic three-way valve (110) and a pumping shell (105); a pumping motor (106), a cutterhead (108) and a centrifugal impeller (107) are arranged in the pumping shell (105); the output shaft of the pumping motor (106) faces downwards vertically and is fixed on the top end face of the pumping shell (105) through a screw, and the pumping motor (106) is electrically connected with the control module (104); the connecting end of the pumping shell (105) and the pumping motor (106) is a closed end, and the other end of the pumping shell is an open end; the closed end of the pumping shell (105) is fixedly arranged on the bottom surface of the fixed frame (103); the cutterhead (108) and the centrifugal impeller (107) are in transmission connection with an output shaft of the pumping motor (106); the cutterhead (108) is arranged at the bottom end of the pumping housing (105); the centrifugal impeller (107) is not in contact with the pumping motor (106) and the reamer disk (108), and is arranged between the pumping motor and the reamer disk.

4. A drainage system for providing a main sewer outside a dwelling as claimed in claim 3, wherein: a sewage draining outlet (109) is formed in the side wall of the pumping shell (105), and the sewage draining outlet (109) is opposite to the centrifugal impeller (107); the first interface of the electromagnetic three-way valve (110) is communicated with the sewage draining outlet (109), and the electromagnetic three-way valve (110) is electrically connected with the control module (104); the backflushing spray pipes (115) are circumferentially arranged along the cross section of the lower cavity and are arranged below the water level limiter (114); the recoil spray pipe (115) is communicated with a second interface of the electromagnetic three-way valve (110); and a third interface of the electromagnetic three-way valve (110) is communicated with the pressure drainage vertical pipe (5) through a drainage hole (119).

5. A drainage system for providing a main sewer outside a dwelling as claimed in claim 3, wherein: a plurality of water spray holes are formed in the backflushing spray pipe (115); the blowholes are circumferentially arranged and the distance between adjacent blowholes is the same.

6. A drainage system for providing a main sewer outside a dwelling as claimed in claim 2, wherein: the conveying liquid unit comprises a conveying liquid control valve (101) and a conveying pipe (102); the middle part of the bottom surface of the conveying liquid control valve (101) is communicated with a conveying pipe (102); the conveying pipe (102) penetrates through the through hole, and the water outlet of the conveying pipe (102) and the water level limiter (114) are kept at the same horizontal height; the delivery pipe (102) is communicated with a delivery liquid control valve (101); the conveying liquid control valve (101) is electrically connected with the control module (104), and the conveying liquid control valve (101) is communicated with the clean water inlet pipe (4).

7. A drainage system for providing a main sewer outside a dwelling as claimed in claim 1, wherein: the elevation of the water inlet end of the horizontal pressure drainage pipe (6) is higher than that of the water outlet end, and the connecting line of the two ends forms an included angle of 0.1-1 degrees with the horizontal plane; the water inlet end level of the toilet bowl water outlet pipe (1), the toilet water outlet pipe (2) and the kitchen and bath water outlet pipe (3) is higher than the water outlet end, and the connecting line of the two ends forms an included angle of 0.1-2.25 degrees with the horizontal plane.

8. A drainage system for providing a main sewer outside a dwelling as claimed in claim 1, wherein: the pressure drainage vertical pipe (5) and the pressure drainage horizontal pipe (6) are embedded into the wall body; the length of the pressure drainage vertical pipe (5) is 2m-3m, and the length of the pressure drainage horizontal pipe (6) is 30m-70 m.

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