CN111364576A

CN111364576A - Sewage discharge system

Info

Publication number: CN111364576A
Application number: CN202010252398.3A
Authority: CN
Inventors: 傅峰峰; 江志强; 朱达成
Original assignee: Guangzhou Fugang Wanjia Intelligent Technology Co Ltd
Current assignee: Guangzhou Fugang Life Intelligent Technology Co Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-07-03

Abstract

The invention provides a sewage discharge system, which enables a movable pipe to stretch into a water supply hole along the reverse drainage direction, then the pipe orifice of the movable pipe is communicated with the water supply hole and pushes against a pushed piece, so that a sealing cover is pushed open to open the water supply hole, therefore, after the movable pipe is communicated with the water supply hole, the sealing cover at the water supply hole is pushed open, and the sewage receiving operation is simple and convenient; after the water storage tank is filled with sewage, the movable carrier moves to the discharge butt joint and the discharge cover is aligned to the discharge butt joint, and then the discharge butt joint transversely pushes the discharge cover, so that the water inlet of the discharge channel is in butt joint with the water outlet of the water storage tank to discharge the sewage in the water storage tank, therefore, after the movable carrier moves to the discharge butt joint, the water outlet of the water storage tank is opened, and the sewage discharge operation is simple and convenient; in conclusion, the sewage discharge system provided by the invention enables the sewage discharge process to be simple and convenient.

Description

Sewage discharge system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sewage discharge system.

Background

At present, sewage is treated by conveying and discharging in a pipeline transportation mode, and particularly, a drainage pipeline is arranged between a sewage source and a sewage discharging place, so that the drainage pipeline is too dense under the condition of more sewage sources, and the occupied space of the drainage pipeline is too large; in addition, the drain pipes are easily clogged due to the impurity residues present in the sewage.

The existing sewage discharge system is provided with a water storage tank on a movable carrier, wherein the water storage tank is used for receiving sewage from a sewage source head, and then the sewage is transferred from the sewage source head to a sewage discharge position to be discharged, so that a drainage pipeline is not required to be arranged between the sewage source head and the sewage discharge position. However, when the mobile carrier receives sewage from the sewage source, the water storage tank needs to be communicated with the water supply hole of the sewage source firstly, then the water supply hole is manually opened to enable sewage in the sewage source to flow into the water storage tank, and after the mobile carrier moves to the sewage discharge position, the outlet of the water storage tank needs to be manually opened to discharge sewage, so that the sewage discharge process is complicated.

Disclosure of Invention

The technical problem to be solved by the invention is how to make the sewage discharge process simple and convenient.

In order to solve the above technical problems, the present invention provides a sewage discharge system, which comprises a movable carrier and a water supply hole formed at a sewage source, wherein a water storage tank is arranged on the movable carrier, and the water storage tank is provided with a downward water discharge outlet, and further comprises:

the sealing cover covers the water supply hole, and extends out of the water supply hole in the direction of water drainage to form an ejection receiving piece which extends into the water supply hole;

the movable pipe is arranged on the movable carrier and is used for taking water from the water storage tank;

a drain cover which is arranged at the drain opening and can move transversely;

the discharge butt joint is provided with a discharge channel with an upward water inlet;

the liquid level detection device is arranged in the water storage tank and is used for detecting the liquid level condition in the water storage tank;

a controller comprising an interconnected memory and a processor, the memory having stored therein a computer program that when executed by the processor performs the steps of:

A. moving the movable carrier until the movable pipe is aligned with the water supply hole, then extending the movable pipe into the water supply hole along the reverse drainage direction, communicating the pipe orifice of the movable pipe with the water supply hole and pushing the pushed piece to open the sealing cover so as to open the water supply hole, and then executing the following step B;

B. acquiring the liquid level condition in the water storage tank in real time by using a liquid level detection device; after the water storage tank is full of sewage according to the liquid level condition, the movable pipe is firstly enabled to leave from the water supply hole, then the movable carrier is enabled to move towards the discharge butt joint and the drainage cover is enabled to be aligned with the discharge butt joint, and the discharge butt joint transversely pushes the drainage cover, so that the water inlet of the discharge channel is in butt joint communication with the water outlet of the water storage tank to discharge the sewage in the water storage tank; and B, after the sewage in the water storage tank is completely discharged according to the liquid level condition, executing the step A.

Preferably, be equipped with the drive arrangement who is used for the automatic drive movable tube on removing the carrier, drive arrangement include driving motor, driving gear, driven gear and the controller, driving motor is connected to the controller, driving gear coaxial arrangement is in driving motor's pivot, and driven gear and driving gear meshing, driven gear are cyclic annular, the movable tube is inserted in driven gear's inner ring, be equipped with first screw thread on the lateral wall of movable tube, be equipped with the second screw thread with first screw thread looks adaptation on driven gear's the interior rampart.

Preferably, the mobile carrier is an AGV cart.

Preferably, the water storage tank comprises a fixed pipe communicated with the water storage tank, the movable pipe is sleeved outside the fixed pipe, and the movable pipe axially moves relative to the fixed pipe.

Preferably, a sealing ring is sleeved on the movable pipe close to the pipe orifice, the movable pipe extends into the water supply hole along the direction opposite to the water drainage direction, and then the sealing ring is clamped between the outer side wall of the movable pipe and the hole wall of the water supply hole.

Preferably, the ejection-receiving member comprises a plurality of ejection-receiving columns, and every two ejection-receiving columns are separated by a certain distance.

Preferably, the ejection-receiving member is attached to a wall of the water supply hole in a state where the ejection-receiving member is inserted into the water supply hole.

Preferably, the movable carrier is provided with a lateral push cover opening, and the discharge butt joint transversely extends into the push drainage cover from the push cover opening.

Preferably, the water outlet of the discharge channel is positioned outside the movable carrier under the condition that the water inlet of the discharge channel is in butt joint communication with the water outlet of the water storage tank.

Preferably, the water outlet of the discharge channel is arranged at one end of the discharge butt joint opposite to the push-away direction.

Preferably, a reset member for resetting the drain cover is included.

Preferably, the reset member is provided on the moving carrier.

Preferably, a guide surface for guiding alignment is provided at a mutual contact of both the drain butt and the drain cover.

Preferably, a lateral butt joint male end is arranged on the discharge butt joint, a lateral butt joint female end is arranged on the drainage cover, and the guide surface is arranged on the butt joint male end and/or the butt joint female end.

The invention has the following beneficial effects: the movable pipe extends into the water supply hole along the direction opposite to the drainage direction, the pipe orifice of the movable pipe is communicated with the water supply hole and pushes the pushed piece, so that the sealing cover is pushed open to open the water supply hole, therefore, after the movable pipe is communicated with the water supply hole, the sealing cover at the water supply hole is pushed open, and the sewage receiving operation is simple and convenient; after the water storage tank is filled with sewage, the movable carrier moves to the discharge butt joint and the discharge cover is aligned to the discharge butt joint, and then the discharge butt joint transversely pushes the discharge cover, so that the water inlet of the discharge channel is in butt joint with the water outlet of the water storage tank to discharge the sewage in the water storage tank, therefore, after the movable carrier moves to the discharge butt joint, the water outlet of the water storage tank is opened, and the sewage discharge operation is simple and convenient; in conclusion, the sewage discharge system provided by the invention enables the sewage discharge process to be simple and convenient.

Drawings

FIG. 1 is a schematic view of a sewage discharge system;

FIG. 2 is a block diagram of a mobile carrier;

FIG. 3 is an internal schematic view of a mobile carrier;

FIG. 4 is an exploded view of the sewage receiving structure;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 6 is a partial schematic view at B of FIG. 5;

FIG. 7 is a schematic view of the movable tube of FIG. 6 after lifting the sealing cap;

FIG. 8 is a partial schematic view at C of FIG. 5;

FIG. 9 is a partial schematic view at D of FIG. 5;

fig. 10 is a schematic view of the sewage drain structure of fig. 8 after docking with the drain docking head of fig. 9.

Description of reference numerals: 1-a sewage tank; 2-moving the carrier; 3-discharge butt joint; 4-a housing; 5-extending the pipe orifice; 6-pushing the cover opening; 7-vehicle wheels; 8-a sewage receiving structure; 9-a water storage tank; 10-a sewage discharge structure; 11-a float level switch; 12-a drainage cover; 13-a return spring; 14-a baffle; 15-a motor mounting bracket; 16-a drive motor; 17-a drive gear; 18-a bearing mount; 19-a first bearing; 20-a second bearing; 21-a driven gear; 22-a movable tube; 23-a stationary tube; 24-upper convex ring; 25-lower convex ring; 26-a first thread; 27-a sealing ring; 28-water supply hole; 29-a sealing cover; 30-a supported column; 31-butt joint of female ends; 32-a water outlet; 33-butt joint of the male end; 34-discharge channel.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The controller mentioned below includes a processor and a computer-readable storage medium connected to each other, and a computer program is stored in the computer-readable storage medium, and the computer program implements the functions of the controller when executed by the processor.

Example 1

The sewage discharge system is shown in fig. 1 and comprises a sewage tank 1, a mobile carrier 2 and a discharge butt joint 3, wherein the sewage tank 1 is a sewage source, the mobile carrier 2 is preferably an AGV trolley which is used for moving back and forth between the sewage tank 1 and the discharge butt joint 3 so as to transfer sewage in the sewage tank 1 to the discharge butt joint 3 and discharge the sewage to the outside, therefore, the mobile carrier 2 is used for receiving sewage and discharging the sewage, and the mobile carrier 2 is used as a sewage receiving device and a sewage discharge device. It should be noted that the discharge docking head 3 actually projects laterally beyond the sewage discharge from the sewage reservoir 1, and fig. 1 shows the discharge docking head 3 beside the sewage reservoir 1 for the sake of illustration only.

As shown in fig. 2, the mobile carrier 2 is provided with a cylindrical housing 4, an extension opening 5 is opened at the top of the housing 4, a lateral cover pushing opening 6 is opened at the side wall of the housing 4 near the bottom, and four wheels 7 (only two of which are shown in the figure for the sake of angle) for moving the mobile carrier 2 are provided at the bottom of the housing 4. As shown in fig. 3, a sewage receiving structure 8, a water storage tank 9, a sewage discharging structure 10 and a floating ball liquid level switch 11 are arranged inside the movable carrier 2, the sewage receiving structure 8 is arranged between the top of the water storage tank 9 and the pipe extending opening 5, the sewage discharging structure 10 comprises a water discharging cover 12 and a return spring 13, the water discharging cover 12 is transversely movably arranged between the bottom of the water storage tank 9 and the cover pushing opening 6, the return spring 13 is arranged on the movable carrier 2, specifically, one end of the return spring 13 is connected with the water discharging cover 12, and the other end is connected with a baffle 14 inside the movable carrier 2; the float level switch 11 extends into the water storage tank 9 and is used for detecting the liquid level in the water storage tank 9.

As shown in fig. 4, the sewage receiving structure 8 includes a motor mounting bracket 15, a driving motor 16, a driving gear 17, a bearing mounting bracket 18, a first bearing 19, a second bearing 20, a driven gear 21, a movable pipe 22, a fixed pipe 23, and a controller (not shown in the figure), the controller is electrically connected to the driving motor 16, wherein the driving motor 16, the driving gear 17, the driven gear 21, and the controller form a driving device. Motor mounting bracket 15 fixed mounting is in the top outside of water storage tank 9, and driving motor 16 fixed mounting is on motor mounting bracket 15, and driving motor 16's pivot passes motor mounting bracket 15 up, and driving gear 17 coaxial arrangement is in driving motor 16's pivot. A bearing mount 18 and a first bearing 19 are fixedly mounted inside the top of the housing 4, a second bearing 20 is fixedly mounted on the bearing mount 18, and the first bearing 19 and the second bearing 20 are aligned with each other. The driven gear 21 is meshed with the driving gear 17, the driven gear 21 is annular, an upper convex ring 24 extends upwards from the inner annular wall of the driven gear 21, a lower convex ring 25 extends downwards from the inner annular wall of the driven gear 21, the upper convex ring 24 is installed in the first bearing 19, the lower convex ring 25 is installed in the second bearing 20, and the driven gear 21 is installed between the first bearing 19 and the second bearing 20 and can rotate by utilizing the first bearing 19 and the second bearing 20. The movable tube 22 is inserted into the inner ring of the driven gear 21, a first thread 26 surrounding the movable tube 22 is protruded on the outer side wall of the movable tube 22, and a second thread (not shown in the figure) matched with the first thread 26 is protruded on the inner ring wall of the driven gear 21, so that when the driven gear 21 rotates, the movable tube 22 can move up and down under the mutual matching of the first thread 26 and the second thread; the movable tube 22 is sleeved with a sealing ring 27 near the upper end tube opening. Fixed pipe 23 fixed mounting is at 9 tops of water storage tank, and communicates inside 9 of water storage tank, and movable tube 22 overlaps outside fixed pipe 23, and movable tube 22 fixed pipe 23 axial displacement relatively, then movable tube 22 and fixed pipe 23 mutually support and form the telescopic tube structure.

As can be seen from fig. 5 and 6, the bottom of the wastewater tank 1 is provided with a water supply hole 28, the water supply hole 28 is provided with a water supply hole sealing structure, the water supply hole sealing structure comprises a sealing cover 29 covering the water supply hole 28, the bottom of the sealing cover 29 extends towards the drainage direction to form at least two supported columns 30, the supported columns 30 extend into the water supply hole 28 and are attached to the wall of the water supply hole 28, every two supported columns 30 are separated by a certain distance, and the movable pipe 22 on the movable pipe can move until the movable pipe aligns with the water supply hole 28. The sealing cover 29, the ejection receiving column 30 and the moving carrier 2 as the sewage receiving device form a water receiving mechanism.

As can be seen from fig. 3, 5 and 8, in the sewage discharge structure 10, one side end of the drain cover 12 facing the cover pushing opening 6 is provided with a lateral female abutting end 31, and the return spring 13 is connected to the drain cover 12, specifically, connected to the other side end opposite to the female abutting end 31. The bottom of the water storage tank 9 is provided with a downward drainage port 32, and in a normal state, the drainage cover 12 blocks the drainage port 32, so that the sewage in the water storage tank 9 cannot be drained from the drainage port 32. As can be seen from fig. 5 and 9, a lateral butt joint male end 33 is provided at one side end of the discharge butt joint 3, a discharge channel 34 for discharging sewage is provided inside the discharge butt joint, a water inlet of the discharge channel 34 faces upward, and a water outlet faces away from the butt joint male end 33. The male docking end 33 of the drain docking head 3 is formed as a circular truncated cone shaped protrusion, and the female docking end 33 of the drain cover 12 is formed as a circular truncated cone shaped recess, so that both the side surface of the circular truncated cone shaped protrusion and the side surface of the circular truncated cone shaped recess serve as guide surfaces for guiding alignment, so that the guide surfaces guide the male docking end 33 and the female docking end 31 to be aligned with each other even if there is a slight deviation in the position between the male docking end 33 and the female docking end 31 during the process of docking with each other. Both the discharge abutment 3 and the moving carrier 2 as sewage discharge form a drainage mechanism.

The controller on the movable carrier 2 is electrically connected to the float level switch 11, when the movable carrier 2 works, the controller controls the related circuit to start the driving motor 16, the rotating shaft of the driving motor 16 rotates in the forward direction to drive the driving gear 17 to rotate in the synchronous forward direction, the driving gear 17 drives the driven gear 21 to rotate in the reverse direction, during the reverse rotation of the driven gear 21, the second thread on the inner ring wall of the driven gear is matched with the first thread 26 on the outer side wall of the movable tube 22, so that the movable tube 22 extends out of the housing 4 from the tube extending opening 5 until the upper tube opening of the movable tube 22 extends into the water supply hole 28 in the reverse drainage direction, because the top pillar 30 is attached to the hole wall of the water supply hole 28, the upper tube opening of the movable tube 22 after extending into the water supply hole 28, will push the top pillar 30 upwards along the belt, so that the sealing cover 29 is pushed open to open the water supply hole 28, as shown in fig. 7, the wastewater tank 1 is communicated with the water storage tank 9, and wastewater in the wastewater tank 1 flows into the water supply hole 28 through the gap between the top posts 30, and then flows into the water storage tank 9 through the water supply hole 28, the movable pipe 22 and the fixed pipe 23 in sequence. After the upper end pipe orifice of the movable pipe 22 extends into the water supply hole 28, the sealing ring 27 on the movable pipe 22 is clamped by the outer side wall of the movable pipe 22 and the hole wall of the water supply hole 28, so that sewage is prevented from flowing out from a gap between the outer side wall of the movable pipe 22 and the inner side wall of the water supply hole 28.

In the process that sewage flows into water storage tank 9, the controller utilizes float level switch 11 real-time detection water storage tank 9 liquid level situation, learn water storage tank 9 according to the liquid level situation when the controller is full of sewage after, the controller control relevant circuit makes driving motor 16's pivot antiport, thereby drive the synchronous antiport of driving gear 17, then driving gear 17 orders about driven gear 21 forward rotation, driven gear 21 is at forward pivoted in-process, second screw thread on its inner ring wall mutually supports with first screw thread 26 on the activity pipe 22 lateral wall, make activity pipe 22 retrieve downwards, leave and retrieve to the shell 4 in from water supply hole 28 until the upper end mouth of pipe of activity pipe 22. During the downward recovery of the movable pipe 22, the sealing cover 29 and the supported column 30 fall downward along the movable pipe 22 under the action of gravity until the sealing cover 29 reseals the water supply hole 28, so that the sewage in the sewage tank 1 does not flow out of the water supply hole 28.

It should be noted that the forward rotation and the reverse rotation are only used to illustrate that the rotation directions are opposite, and the specific rotation direction is not limited, and those skilled in the art can set the directions of the first thread and the second thread according to actual needs, so as to adjust the relationship between the rotation direction of the rotating shaft of the driving motor 16 and the ascending and descending of the movable tube 22, and details are not described herein again.

After the movable pipe 22 of the movable carrier 2 is retracted into the housing 4, the controller controls the related circuit to drive the wheels 7, so that the movable carrier 2 will travel to the sewage drain position according to the predetermined route until the female end 31 of the drain cover 12 faces the male end 33 of the drain connector 3, and then the movable carrier 2 continues to move towards the drain connector 3, and then the female end 31 and the male end 33 are connected, so that the drain connector 3 can be aligned with the drain cover 12 accurately, and then the drain connector 3 transversely extends into the movable carrier 2 from the cover pushing port 6 and transversely pushes open the drain cover 12, so that the drain cover 12 moves towards the inside of the movable carrier 2 and compresses the return spring 13 until the drain cover 12 no longer blocks the drain port 32 at the bottom of the water storage tank 9, and then the movable carrier 2 continues to move until the drain port 32 at the bottom of the water storage tank 9 communicates with the water inlet of the drain passage 34 of the drain connector 3, at this time, the water outlet of the discharge passage 34 is positioned outside the movable carrier 2 so as not to contact the drain cover 12, and as shown in fig. 10, the sewage in the water storage tank 9 is discharged to the outside through the drain opening 32 and the discharge passage 34 in sequence.

In the sewage discharging process, the controller detects the liquid level condition in the water storage tank 9 in real time by using the float ball liquid level switch 11, when the controller knows that the sewage discharging is finished according to the liquid level condition, the controller controls the related circuit to drive the wheels 7, the movable carrier 2 reversely moves to the lower part of the sewage tank 1 according to the preset route until the movable pipe 22 is aligned with the water supply hole 28 again, in the process, the discharging butt joint 3 is drawn out of the movable carrier 2, the discharging butt joint 3 does not abut against the water discharging cover 12 any more, the water discharging cover 12 automatically resets under the action of the reset spring 13 to block the water discharging hole 32 at the bottom of the water storage tank 9, then the controller controls the related circuit to enable the movable pipe 22 of the sewage receiving structure 8 to extend into the water supply hole 28 of the sewage tank 1 again, and the sewage tank 1 and the water storage tank 9 keep a communication state again.

The moving carrier 2 continuously moves back and forth between the sewage pool 1 and the discharge butt joint 3, and the above-mentioned working process of connecting the sewage pool 1 and the butt joint discharge butt joint 3 is repeated, so that the sewage in the sewage pool 1 is transferred to the discharge butt joint 3 to be discharged to the outside.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the protection scope of the present application, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. Sewage discharge system, including removal carrier (2) and opening feed water hole (28) in sewage source department, be equipped with water storage tank (9) on removal carrier (2), water storage tank (9) open there is outlet (32) down, characterized by still includes:

a sealing cover (29) which covers the water supply hole (28) and extends towards the water discharge direction to form an ejected piece, and the ejected piece extends into the water supply hole (28);

a movable pipe (22) which is arranged on the movable carrier (2) and is used for taking water from the water storage tank (9);

a drain cover (12) provided at the drain port (32) and movable laterally;

a discharge butt joint (3) provided with a discharge passage (34) with an upward water inlet;

a liquid level detection device (11) which is arranged in the water storage tank (9) and is used for detecting the liquid level condition in the water storage tank (9);

A. enabling the movable carrier (2) to move forward until the movable pipe (22) is aligned to the water supply hole (28), enabling the movable pipe (22) to stretch into the water supply hole (28) along the direction opposite to the drainage direction, enabling the pipe opening of the movable pipe (22) to be communicated with the water supply hole (28) and jacking the jacked piece, enabling the sealing cover (29) to be jacked open to open the water supply hole (28), and then executing the following step B;

B. acquiring the liquid level condition in the water storage tank (9) in real time by using a liquid level detection device (11); after the water storage tank (9) is full of sewage according to the liquid level condition, the movable pipe (22) is firstly enabled to leave from the water supply hole (28), then the movable carrier (2) is enabled to move towards the discharge butt joint (3) and the drainage cover (12) is enabled to be aligned with the discharge butt joint (3), the discharge butt joint (3) transversely pushes away the drainage cover (12), and therefore the water inlet of the discharge channel (34) is enabled to be in butt joint connection with the water outlet (32) of the water storage tank (9) to discharge the sewage in the water storage tank (9); and B, after the sewage in the water storage tank (9) is completely discharged according to the liquid level condition, executing the step A.

2. The sewage discharge system of claim 1 wherein: be equipped with the drive arrangement who is used for automatic drive movable tube (22) on removal carrier (2), drive arrangement include driving motor (16), driving gear (17), driven gear (21) and the controller, driving motor (16) is connected to the controller, driving gear (17) coaxial arrangement is in the pivot of driving motor (16), and driven gear (21) and driving gear (17) meshing, and driven gear (21) are cyclic annular, movable tube (22) are inserted in the inner ring of driven gear (21), be equipped with first screw thread (26) on the lateral wall of movable tube (22), be equipped with the second screw thread with first screw thread (26) looks adaptation on the interior rampart of driven gear (21).

3. The sewage discharge system of claim 2 wherein: the mobile carrier (2) is an AGV.

4. The sewage discharge system of claim 1 wherein: comprises a fixed pipe (23) communicated with a water storage tank (9), a movable pipe (22) is sleeved outside the fixed pipe (23), and the movable pipe (22) axially moves relative to the fixed pipe (23).

5. The sewage discharge system of claim 1 wherein: a sealing ring (27) is sleeved at a position, close to the pipe orifice, of the movable pipe (22), the movable pipe (22) stretches into the water supply hole (28) in the direction opposite to the drainage direction, and then the sealing ring (27) is clamped by the outer side wall of the movable pipe (22) and the hole wall of the water supply hole (28).

6. The sewage discharge system of claim 1 wherein: the ejection-receiving piece comprises a plurality of ejection-receiving columns (30), and every two ejection-receiving columns (30) are separated by a certain distance.

7. The sewage discharge system of claim 6 wherein: under the state that the ejection receiving piece extends into the water feeding hole (28), the ejection receiving column (30) is attached to the hole wall of the water feeding hole (28).

8. The sewage discharge system of claim 1 wherein: the movable carrier (2) is provided with a lateral cover pushing opening (6), and the discharge butt joint (3) transversely extends into the discharge cover (12) from the cover pushing opening (6).

9. The sewage discharge system of claim 8 wherein: and under the state that the water inlet of the discharge channel (34) is in butt joint communication with the water outlet (32) of the water storage tank (9), the water outlet of the discharge channel (34) is positioned outside the movable carrier (2).

10. The sewage discharge system of claim 9 wherein: the water outlet of the discharge channel (34) is arranged at one end of the discharge butt joint (3) opposite to the push-away direction.

11. The sewage discharge system of claim 1 wherein: comprises a resetting piece (13) for resetting the drainage cover (12).

12. The sewage discharge system of claim 11 wherein: the reset piece (13) is arranged on the movable carrier (2).

13. The sewage discharge system of claim 1 wherein: a guide surface for guiding alignment is provided at a mutual contact of the drain butt joint (3) and the drain cover (12).

14. The sewage discharge system of claim 1 wherein: the drainage connector is characterized in that a lateral butt joint male end (33) is arranged on the drainage butt joint (3), a lateral butt joint female end (31) is arranged on the drainage cover (12), and the guide surface is arranged on the butt joint male end (33) and/or the butt joint female end (31).