CN115094992A

CN115094992A - Drainage device of closestool

Info

Publication number: CN115094992A
Application number: CN202210632595.7A
Authority: CN
Inventors: 周娟
Original assignee: Xiamen Lingdong Technology Co ltd
Current assignee: Xiamen Lingdong Technology Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-09-23

Abstract

The invention discloses a drainage device of a closestool, which comprises a water tank, a drainage valve and a drainage pipe, wherein an inner cavity of the water tank is communicated to a urinal of the closestool through a drainage outlet of the drainage valve and the drainage pipe, the drainage valve is provided with a starting piece for controlling the drainage outlet of the drainage valve to be opened, the air pressure in the drainage pipe is smaller than the external atmospheric pressure when the drainage outlet is not opened, the drainage device also comprises a pressure regulating channel communicated with the drainage pipe and a pressure regulating component for controlling the pressure regulating channel to be communicated or cut off with the external air, and the starting piece controls the pressure regulating component to open the pressure regulating channel before the drainage outlet is opened. According to the invention, the pressure regulating channel is opened before the water outlet is opened, so that the air pressure in the water drainage pipe is balanced with the external atmospheric pressure before the water outlet is opened, the water drainage valve is driven to open the water drainage value to be smaller, and the use experience is better.

Description

Drainage device of closestool

Technical Field

The invention relates to a drainage device of a closestool.

Background

In the drainage device of the existing closestool, the urinal is generally flushed by adopting the stored water of the water tank, the drainage valve is arranged in the water tank to control whether the water tank drains water or not, and the drainage port of the drainage valve is communicated with the urinal through the drainage pipe. In order to improve the flushing effect on the urinal, the drainage pipe of some closestool drainage devices is designed to be isolated from the outside atmosphere when the drainage port is not opened, and a water seal arranged in the urinal can prevent outside air from entering the drainage pipe through the urinal. Like this, after the drainage, there is one section to deposit water in the drain pipe, and the air pressure in the drain pipe is less than external atmospheric pressure when the outlet is not opened, and when washing next time, the deposit water in the drain pipe can be arranged to the urinal immediately, has increased drainage speed and displacement to make and wash the effect better.

However, in the prior art, when the drain opening is not opened, negative pressure is formed in the drain pipe, so that a valve core for closing the drain opening on the drain valve is subjected to downward suction, and therefore, a large acting force is required for driving the valve core of the drain valve to upwards open the drain opening, the use experience is poor, and old people or children even cannot drive the drain valve to open the drain opening.

Disclosure of Invention

The invention aims to provide a drainage device of a closestool, which can effectively avoid the problem that the drainage valve is driven to open and drain water difficultly due to negative pressure although the negative pressure exists in the drainage pipe when the drainage is not opened, and has better use experience.

In order to achieve the purpose, the invention provides a drainage device of a closestool, which comprises a water tank, a drainage valve and a drainage pipe, wherein an inner cavity of the water tank is communicated to a urinal of the closestool through a drainage outlet of the drainage valve and the drainage pipe, the drainage valve is provided with a starting piece for controlling the drainage outlet of the drainage valve to be opened, the air pressure in the drainage pipe is smaller than the external atmospheric pressure when the drainage outlet is not opened, the drainage device also comprises a pressure regulating channel communicated with the drainage pipe and a pressure regulating component for controlling the pressure regulating channel to be communicated or cut off with the external air, and the starting piece controls the pressure regulating component to open the pressure regulating channel in a linkage manner before the drainage outlet is opened.

According to the drainage device of the closestool, the pressure regulating channel is opened before the water outlet is opened, so that the air pressure in the drainage pipe is balanced with the external atmospheric pressure before the water outlet is opened, the problem that the drainage valve is driven to open and drain water due to negative pressure in the drainage pipe can be effectively avoided, and the use experience is better.

In some embodiments, all or part of the pressure regulating channel is arranged in the water tank, the pressure regulating channel comprises an overflow port and a pressure regulating port which are positioned above the water level of the water tank, the pressure regulating component is matched with the pressure regulating port in an opening and closing mode to control the pressure regulating channel to be communicated or cut off with the outside air, an overflow component comprising a floating barrel is further arranged in the water tank, the overflow component controls the sealing or opening of the overflow port, and when the water level in the water tank rises to a position higher than the water level of the water tank by a certain distance, the floating barrel floats and controls the overflow port to be opened.

In the above scheme, set up overflow mouth and pressure regulating mouth on the pressure regulating passageway that lies in above the water storage water level of water tank, pressure regulating subassembly and pressure regulating mouth switching cooperation are linked together or cut off with outside air in order to control pressure regulating passageway, and overflow subassembly control overflow mouth is sealed or is opened, and the pressure regulating passageway also is used as the overflow passageway of water tank, promptly, pressure regulating passageway and overflow passageway integration become same passageway, simple structure, compactness to can directly adopt the overflow passageway of current closestool water tank to reequip, save manufacturing cost.

In some embodiments, the top opening of the pressure regulating channel forms the overflow port, the side wall opening of the pressure regulating channel forms the pressure regulating port, and the pressure regulating assembly and the overflow assembly are both installed on a pipeline forming the pressure regulating channel.

In the above scheme, the top end opening with the pressure regulating passageway is used as the overflow mouth, and the lateral wall opening with the pressure regulating passageway is used as the pressure regulating mouth to can make the overflow effect not influenced, and all install pressure regulating subassembly and overflow subassembly on forming the pipeline that the pressure regulating leads to, the structure is compacter, and it is more convenient to install.

In some embodiments, the actuator has an actuation stroke and a drive stroke, the actuator opens the pressure regulating port upon movement, the actuator opens the drain port upon movement of the actuation stroke, and the actuator fully opens the drain port upon movement of the drive stroke; or, the starter has pressure regulating stroke, start-up stroke and drive stroke, the start-up stroke is greater than the pressure regulating stroke, the pressure regulating stroke is greater than Omm, the starter motion just open during the pressure regulating stroke the pressure regulating mouth, the starter motion just open during the start-up stroke the outlet, the starter motion is completely opened during the drive stroke the outlet.

In some embodiments, the actuators include half-row actuators having a half-row actuation stroke and a half-row drive stroke, and full-row actuators having a full-row actuation stroke and a full-row drive stroke; the half-row starting stroke is greater than or equal to or less than the full-row starting stroke, and the half-row driving stroke is greater than or equal to or less than the full-row driving stroke;

the half-row starting piece and the full-row starting piece move independently without being linked with each other, and are linked with the pressure regulating assembly respectively; or,

the half-row starting piece is linked with the full-row starting piece, the full-row starting piece is directly linked with the pressure regulating assembly, and the half-row starting piece is indirectly linked with the pressure regulating assembly through the full-row starting piece; or,

the full-row starting part is linked with the half-row starting part, the half-row starting part is directly linked with the pressure regulating assembly, and the full-row starting part is indirectly linked with the pressure regulating assembly through the half-row starting part.

In the above-mentioned scheme, half row of starting member and full row of starting member can link the pressure regulating subassembly respectively, perhaps, half row of starting member is through the indirect pressure regulating subassembly that links of full row of starting member to the realization possesses the drain valve of double function no matter half row or full row can both reach the purpose of laborsaving operation.

In some embodiments, the pressure regulating subassembly is located including the pressure regulating seat, the activity that have logical runner pressure regulating valve core on the pressure regulating seat with be used for right the pressure regulating valve core carries out the first elastic component that resets, the pressure regulating seat is fixed in and forms on the pipeline of pressure regulating passageway, the one end that leads to the runner be with the sealed end of giving vent to anger that communicates of pressure regulating passageway, the other end that leads to the runner be by the inlet end of pressure regulating valve core control switching, pressure regulating valve core with be equipped with first sealing member between the inlet end, start the piece with pressure regulating valve core linkage cooperation.

In some embodiments, the actuating member is a button disposed on the upper portion of the valve body of the drain valve, the pressure regulating valve core is fixedly connected to a connecting rod, the button is connected to a pressing rod, the pressing rod abuts against the connecting rod when the button descends, and the connecting rod drives the pressure regulating valve core to move downward to open the air inlet end of the through flow channel.

In the scheme, the press key drives the pressure regulating valve core to move through the press rod and the connecting rod, and the structure is simple and the linkage is reliable.

In some embodiments, the height of the link is adjustable up and down.

In the above scheme, the height-adjustable of connecting rod to make pressure regulating subassembly can the different high drain valves of wildcard, the wildcard nature is better, and reduce the required precision to the cooperation size of spare parts such as starter, pressure regulating seat, pressure regulating case.

In some embodiments, the connecting rod is a screw rod, the pressure regulating seat is provided with a screw hole which is through up and down, the screw rod is connected with the screw hole through threads to adjust the height up and down, the pressure regulating assembly further comprises a nut, and the nut is in threaded fit with the screw rod and abuts against the pressure regulating seat when the screw rod is locked.

In the above scheme, the height adjusting structure of the connecting rod is simple and reliable in function.

In some embodiments, the pressure regulating seat is integrally formed with a conduit forming the pressure regulating channel; or, the pressure regulating seat and the pipeline forming the pressure regulating channel are formed in a split mode, and at the moment, a second sealing piece is arranged between the pressure regulating seat and the pipeline forming the pressure regulating channel.

In some embodiments, the drain valve includes a valve body and a base having the drain opening, and the pressure regulating passage is mounted on the base of the drain valve and communicates with the drain opening.

In some embodiments, the drain pipe has a water spot within the drain pipe when the drain port is not open, the level of the water spot within the drain pipe being higher than the level of the water spot within the toilet bowl of the toilet.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings. In the drawings:

fig. 1 is an assembled perspective view of a drain valve, a pressure regulating assembly and a pressure regulating passage according to an embodiment of the present invention;

FIG. 2 is one of three-dimensional exploded views of a drain valve, a pressure regulating assembly and a pressure regulating channel according to an embodiment of the present invention;

FIG. 3 is a second exploded perspective view of the drain valve, the pressure regulating assembly and the pressure regulating channel according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view of the assembled drain valve, pressure regulating assembly and pressure regulating channel of one embodiment of the present invention;

FIG. 5 is one of the cross-sectional views of a pressure adjustment assembly according to one embodiment of the present invention;

FIG. 6 is a second cross-sectional view of a pressure adjustment assembly in accordance with an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a half row of actuators and a full row of actuators in an initial position in accordance with an embodiment of the present invention;

FIG. 8 is a cross-sectional view of a full row of actuators being depressed in accordance with one embodiment of the present invention;

FIG. 9 is a cross-sectional view of a full row actuator of one embodiment of the present invention fully depressed (i.e., the full row actuator has moved a full row drive stroke);

FIG. 10 is a cross-sectional view of a half-row actuator being depressed in accordance with an embodiment of the present invention;

FIG. 11 is a cross-sectional view of one embodiment of the present invention with the half-row actuator fully depressed (i.e., with the half-row actuator moved through a half-row actuation stroke);

the symbols are as follows:

10-a drain valve; 10 a-a valve body; 10 b-a base; 11-a water outlet; 12-an actuator; 121-half row of actuating members; 122-full row of actuators; 13-a compression bar; 14-a second return spring;

20-a voltage regulation channel; 21-a pressure regulating port; 22-an overflow port;

30-a voltage regulation assembly; 31-a pressure regulating seat; 311-through channel; 3111-an inlet end; 3112-gas outlet end; 312-screw hole; 32-a pressure regulating valve core; 33-a first return spring; 34-a first seal; 35-a second seal; 36-a connecting rod; 37-a nut;

40-an overflow assembly; 41-a floating barrel; 42-sealing cover.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following discussion, details are given to provide a more thorough understanding of the present invention. One skilled in the relevant art will recognize, however, that the invention can be practiced without one or more of the specific details. In certain instances, well known features have not been described in detail in order to avoid obscuring the invention. It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like are used herein for purposes of illustration only and are not to be construed as limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

Referring to fig. 1 to 11, a toilet bowl according to a preferred embodiment of the present invention includes a water tank (not shown), a drain valve 10, and a drain pipe (not shown), wherein an inner cavity of the water tank is communicated to a toilet bowl through the drain opening 11 of the drain valve 10 and the drain pipe. The drain valve 10 has an actuator 12 for controlling the opening of the drain opening 11 of the drain valve 10, and the drain valve 10 may be a conventional drain valve. When the drain port 11 is not opened, the inner cavity of the drain pipe is isolated from the outside atmosphere, and the air pressure in the drain pipe is lower than the outside atmosphere when the drain port 11 is not opened. The toilet drain device further includes a pressure regulating passage 20 communicated with the drain pipe and a pressure regulating assembly 30 for controlling the pressure regulating passage 20 to be communicated with or cut off from the outside air. The actuator 12 controls the pressure regulating assembly 30 to open the pressure regulating passage 20 before the drain opening 11 is opened. By opening the pressure regulating channel 20 before opening the water outlet 11, the air pressure in the drain pipe is balanced with the external atmospheric pressure before opening the water outlet 11, so that the problem that the negative pressure in the drain pipe causes the driving drain valve 10 to open the drain valve, the drain valve is difficult to drain, and the use experience is better.

The pressure regulating channel 20 is wholly or partially arranged in the water tank, and the pressure regulating channel 20 of the embodiment is wholly arranged in the water tank. The pressure regulating channel 20 comprises an overflow port 22 and a pressure regulating port 21 which are positioned above the water level of the water storage of the water tank, and the pressure regulating component 30 is matched with the pressure regulating port 21 in an opening and closing mode to control the pressure regulating channel 20 to be communicated with or cut off from the outside air. The water tank is also internally provided with an overflow assembly 40 comprising a floating barrel 41, the overflow assembly 40 controls the sealing or opening of the overflow port 22, and when the water level in the water tank rises to a position which is a certain distance higher than the water level of the stored water, the floating barrel 41 of the overflow assembly 40 floats and controls the overflow port 22 to be opened, so that the water in the water tank can be discharged from the pressure regulating channel 20 to the urinal of the toilet through the overflow port 22, and the overflow of the water flow from other parts of the water tank is avoided. Thus, the pressure regulating channel 20 is also used as an overflow channel of the water tank, namely, the pressure regulating channel 20 and the overflow channel are integrated into the same channel, the structure is simple and compact, the existing overflow channel of the water tank of the toilet can be directly adopted for modification, and the manufacturing cost is saved.

In this embodiment, the top opening of pressure regulating passageway 20 forms overflow mouth 22, and the lateral wall opening of pressure regulating passageway 20 forms pressure regulating mouth 21, and pressure regulating subassembly 30 and overflow subassembly are all installed on forming the pipeline that the pressure regulating leads to. The top end opening of the pressure regulating channel 20 is used as the overflow port 22, and the side wall opening of the pressure regulating channel 20 is used as the pressure regulating port 21, so that the overflow effect is not affected, the pressure regulating assembly 30 and the overflow assembly are both installed on a pipeline which is communicated with the pressure regulating channel, the structure is more compact, and the installation is more convenient.

Referring to fig. 1 to 4, in the present embodiment, the overflow assembly 40 further includes a sealing cover 42 engaged with the overflow port 22, the sealing cover 42 is in linkage engagement with the floating bucket 41, the floating bucket 41 drives the sealing cover 42 to move upward and open the overflow port 22 when floating, and the floating bucket 41 drives the sealing cover 42 to move downward and close the overflow port 22 when falling.

The actuator 12 has an actuation stroke, which is the distance between the actuator 12 from the initial un-actuated position to the position when the drain 11 has just been opened, and a drive stroke, which is the distance between the actuator 12 from the initial un-actuated position to the position when the drain 11 is fully opened. In this embodiment, please refer to fig. 7, because the lower surface of the pressure lever 13 described below just abuts against the end surface of the top end of the connecting rod 36 when the actuating member 12 is not pressed, the pressure regulating port 21 is opened when the actuating member 12 moves (equivalent to the pressure regulating stroke described below equal to Omm), and the drain opening 11 is opened when the actuating member 12 moves the actuating stroke, so that the pressure regulating port 21 is opened first, the drain opening 11 is opened later, and the pressure regulating channel 20 is opened by the linkage pressure regulating assembly 30 before the actuating member 12 controls the drain opening 11; alternatively, in other embodiments, actuator 12 may have a pressure adjustment stroke, an actuation stroke, and a drive stroke, and as such, the actuation stroke refers to the distance between the actuator 12 moving from an initial un-actuated position to a position when drain 11 is just opened, the drive stroke refers to the distance between the actuator 12 moving from an initial un-actuated position to a position when drain 11 is fully opened, the pressure regulating stroke is the distance between the position of the starting piece 12 which is not driven initially and the position of the pressure regulating port 21 which is just opened, the starting stroke is larger than the pressure regulating stroke, the pressure regulating stroke is larger than Omm, the pressure regulating port 21 is just opened when the starting piece 12 moves the pressure regulating stroke, the water outlet 11 is just opened when the starting piece 12 moves the starting stroke, thus the pressure regulating port 21 is opened first and the water outlet 11 is opened later, thereby realizing that the pressure regulating channel 20 is opened by the linkage pressure regulating assembly 30 before the actuating member 12 controls the drainage outlet 11 to be opened.

In this embodiment, referring to fig. 3 and 4, the actuators 12 include half-row actuators 121 and full-row actuators 122, the half-row actuators 121 having half-row actuation strokes and half-row drive strokes, and the full-row actuators 122 having full-row actuation strokes and full-row drive strokes. The half-row starting stroke is larger than or equal to or smaller than the full-row starting stroke, namely the half-row starting stroke and the full-row starting stroke can be consistent or inconsistent, and the relation between the half-row starting stroke and the full-row starting stroke is not limited. The half-row driving stroke is larger than or equal to or smaller than the full-row driving stroke, namely the half-row driving stroke and the full-row driving stroke can be consistent or inconsistent, and the relationship between the half-row driving stroke and the full-row driving stroke is not limited. Specifically, in this embodiment, the half-row starting stroke is equal to the full-row starting stroke, and the half-row driving stroke is also equal to the full-row driving stroke.

In this embodiment, as shown in fig. 10 and 11, the half-discharge actuating member 121 is linked with the full-discharge actuating member 122, the full-discharge actuating member 122 is directly linked with the pressure regulating assembly 30, and the half-discharge actuating member 121 is indirectly linked with the pressure regulating assembly 30 through the full-discharge actuating member 122, so that the purpose of labor saving operation of the drain valve 10 with the double-discharge function can be achieved no matter whether the drain valve is half-discharge or full-discharge. Or, alternatively, the full-row starting piece 122 is linked with the half-row starting piece 121, the half-row starting piece 121 is directly linked with the pressure regulating assembly 30, and the full-row starting piece 122 is indirectly linked with the pressure regulating assembly 30 through the half-row starting piece 121; alternatively, the half-discharge starting member 121 and the full-discharge starting member 122 may move independently without interlocking with each other, and the half-discharge starting member 121 and the full-discharge starting member 122 may be interlocked with the pressure regulating assembly 30, so that the water discharge valve 10 having the double discharge function may be operated in a labor-saving manner regardless of the half-discharge or the full-discharge.

In this embodiment, the pressure regulating assembly 30 includes a pressure regulating seat 31 having a through flow passage 311, a pressure regulating valve core 32 movably disposed on the pressure regulating seat 31, and a first reset elastic member 33 for resetting the pressure regulating valve core 32, the pressure regulating seat 31 is fixed on a pipeline forming the pressure regulating passage 20, one end of the through flow passage 311 is an air outlet end 3112 hermetically communicated with the pressure regulating passage 20, the other end of the through flow passage 311 is an air inlet end 3111 controlled to be opened and closed by the pressure regulating valve core 32, and a first sealing member 34 is disposed between the pressure regulating valve core 32 and the air inlet end 3111, so that the air inlet end 3111 can be hermetically closed. Actuator 12 is in cooperating engagement with pressure regulator valve spool 32. The first return elastic member 33 is preferably a return spring here.

In this embodiment, the starting part 12 and the pressure regulating valve core 32 are in linkage fit through the pressure lever 13 and the connecting rod 36, specifically, the starting part 12 is a key arranged on the upper portion of the valve body 10a of the drain valve 10, the pressure regulating valve core 32 is fixedly connected with the connecting rod 36, the key is connected with the pressure lever 13, the pressure lever 13 abuts against the connecting rod 36 when moving downwards along with the key, and then the pressure regulating valve core 32 is driven by the connecting rod 36 to move downwards to open the air inlet 3111 of the through flow passage 311. The press key drives the pressure regulating valve core 32 to move through the press rod 13 and the connecting rod 36, and the structure is simple and the linkage is reliable. The drain valve 10 is further provided with a second return elastic member 14 for returning the actuator 12, and the second return elastic member 14 also employs a return spring.

In this embodiment, the height of the connecting rod 36 can be adjusted up and down, so that the pressure regulating assembly 30 can be used for communicating the drain valves 10 with different heights, the communication performance is better, and the precision requirements on the matching sizes of the components such as the starting piece 12, the pressure regulating seat 31 and the pressure regulating valve core 32 are reduced.

Specifically, the connecting rod 36 is a screw, the pressure regulating seat 31 is provided with a screw hole 312 which is vertically penetrated, and the screw is vertically adjusted in height by being connected with the screw hole 132 through a screw thread. The pressure regulating assembly 30 further comprises a nut 37, and the nut 37 is in threaded fit with the screw and abuts against the pressure regulating seat 31 when the screw is locked. The height adjustment of the connecting rod 36 is simple in structure and reliable in function.

In this embodiment, the pressure regulating seat 31 and the pipe forming the pressure regulating passage 20 are formed separately, and at this time, the second sealing member 35 is disposed between the pressure regulating seat 31 and the pipe forming the pressure regulating passage 20, so that the through flow passage 311 and the pressure regulating passage 20 are in sealed communication. Of course, in other embodiments, the pressure regulating seat 31 may be integrally formed with the pipe forming the pressure regulating passage 20, so that the second sealing member 35 may be omitted.

In this embodiment, the discharge valve 10 includes a valve body 10a and a base 10b having a discharge port 11, and the pressure regulating passage 20 is installed on the base 10b of the discharge valve 10 and communicates with the discharge port 11.

In this embodiment, the drain pipe has water therein when the drain port 11 is not opened, and the level of the water stored in the drain pipe is higher than the level of the water stored in the toilet bowl of the toilet.

The working process of this embodiment is briefly described as follows:

referring to fig. 7, at this time, the half-line actuator 121 and the full-line actuator 122 of the drain valve 10 are in the initial non-pressed positions by the elastic force of the second return elastic member 14. The pressure regulating valve core 32 of the pressure regulating assembly 30 is positioned at a position for closing the air inlet end 3111 of the through flow passage 311 under the elastic force of the first reset elastic member 33, so that the pressure regulating passage 20 is controlled to be cut off from the outside air, the water inlet end of the drain pipe is sealed and closed by the drain valve 10, the water outlet end is sealed by the water seal of the urinal, the inner cavity of the drain pipe is isolated from the outside atmosphere, water is stored in the drain pipe at a certain height, and the air pressure in the drain pipe is less than the outside atmospheric pressure when the drain outlet 11 is not opened.

When full drainage is needed, referring to fig. 8, at this time, in the state of fig. 7, the full-row starting piece 122 is pressed downward, the full-row starting piece 122 drives the connecting rod 36 to move downward through the pressing rod 13, the connecting rod 36 further drives the pressure regulating valve core 32 to open the air inlet end 3111 of the through flow channel 311, and outside air can enter the through flow channel 311 through the air inlet end 3111 of the through flow channel 311 and further enter the pressure regulating channel 20 and the drain pipe (the air flow path is shown by an arrow in the figure), so that negative pressure in the drain pipe is offset, and the air pressure in the drain pipe is regulated to be balanced with the atmospheric pressure.

Then, the full-discharge starting member 122 is continuously pressed downwards, when the full-discharge starting member 122 moves through the full-discharge starting stroke, the water outlet 11 of the water discharge valve 10 is just opened, and because the negative pressure in the water discharge pipe does not exist at this time, the valve core (not shown) in the water discharge valve 10 is driven to open the water outlet, and the suction force of the negative pressure on the valve core of the water discharge valve 10 does not need to be overcome any more, so that the purpose of lifting the valve core in a labor-saving manner can be achieved. The full row actuator 122 is shown in fig. 8 positioned between movement of the full row actuation stroke and the full row drive stroke.

Continuing to press the full-discharge actuator 122 downwardly, the drain port 11 is fully opened as the full-discharge actuator 122 moves through the full-discharge drive stroke, at which point the drain valve performs the full-discharge function, as shown in fig. 9.

When half drainage is needed, referring to fig. 10, at this time, in the state of fig. 7, the half-row starting piece 121 is pressed downward, the half-row starting piece 121 drives the full-row starting piece 122 to move downward together, the full-row starting piece 122 drives the connecting rod 36 to move downward through the pressing rod 13, the connecting rod 36 further drives the pressure regulating valve core 32 to open the air inlet 3111 of the through flow passage 311, and outside air can enter the through flow passage 311 through the air inlet 3111 of the through flow passage 311 and then enter the pressure regulating passage 20 and the drain pipe (the air flow path is shown by an arrow in the figure), so that negative pressure in the drain pipe is offset, and the air pressure in the drain pipe is regulated to be balanced with the atmospheric pressure.

Then, the half-discharge starting member 121 is continuously pressed downwards, when the half-discharge starting member 121 moves by the half-discharge starting stroke, the water outlet 11 of the water discharge valve 10 is just opened, and because the negative pressure in the water discharge pipe does not exist at this time, a valve core (not shown) in the water discharge valve 10 is driven to open the water outlet, and the suction force of the negative pressure on the valve core of the water discharge valve 10 does not need to be overcome any more, so that the purpose of lifting the valve core in a labor-saving manner can be achieved. The position of the half-row actuator 121 shown in fig. 9 is between a half-row actuation stroke and a half-row drive stroke.

Continuing to press the half-discharge actuator 121 downward, the drain opening 11 is fully opened when the half-discharge actuator 121 moves the half-discharge driving stroke, at which time the drain valve performs a half-discharge function, as shown in fig. 11.

In both full discharge and half discharge, after each discharge, there is water stored in the discharge pipe, and the level of the water stored in the discharge pipe is higher than the level of the water stored in the toilet bowl of the toilet.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "component" and the like, when used herein, may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, when used herein, can refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is not applicable or otherwise stated in the other embodiment.

While the foregoing specification illustrates and describes the preferred embodiments of this invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The drainage device of the closestool comprises a water tank, a drainage valve and a drainage pipe, wherein an inner cavity of the water tank is communicated to a urinal of the closestool through a drainage outlet of the drainage valve and the drainage pipe, the drainage valve is provided with a starting piece for controlling the drainage outlet of the drainage valve to be opened, and the air pressure in the drainage pipe is smaller than the external atmospheric pressure when the drainage outlet is not opened.

2. The toilet bowl water discharge device according to claim 1, wherein the pressure regulating channel is entirely or partially disposed in the water tank, the pressure regulating channel comprises an overflow port and a pressure regulating port which are located above the water level of the water tank, the pressure regulating assembly is matched with the pressure regulating port in an opening and closing mode to control the pressure regulating channel to be communicated or cut off with the outside air, an overflow assembly comprising a floating barrel is further disposed in the water tank, the overflow assembly controls the overflow port to be sealed or opened, and when the water level in the water tank rises to a position higher than the water level by a certain distance, the floating barrel floats and controls the overflow port to be opened.

3. The toilet drain device according to claim 2, wherein the overflow port is formed by an opening at the top end of the pressure regulating channel, the pressure regulating port is formed by an opening at the side wall of the pressure regulating channel, and the pressure regulating assembly and the overflow assembly are both mounted on a pipeline forming the pressure regulating channel.

4. The toilet drain of claim 1, wherein the actuator has an actuation stroke and a drive stroke, wherein the actuator opens the pressure regulator port upon movement of the actuator, wherein the actuator opens the drain port upon movement of the actuation stroke, and wherein the actuator fully opens the drain port upon movement of the actuator through the drive stroke; or, the starting piece has pressure regulating stroke, starting stroke and driving stroke, the starting stroke is greater than the pressure regulating stroke, the pressure regulating stroke is greater than Omm, the starting piece moves just open during the pressure regulating stroke the pressure regulating port, the starting piece moves just open during the starting stroke the drain port, the starting piece moves the drain port is opened completely during the driving stroke.

5. The toilet drain of claim 4, wherein the actuator includes a half-row actuator having a half-row actuation stroke and a half-row drive stroke and a full-row actuator having a full-row actuation stroke and a full-row drive stroke; the half-row starting stroke is greater than or equal to or less than the full-row starting stroke, and the half-row driving stroke is greater than or equal to or less than the full-row driving stroke;

the half-row starting piece and the full-row starting piece move independently without being linked with each other, and the half-row starting piece and the full-row starting piece are linked with the pressure regulating assembly respectively; or,

6. The water discharge device of the toilet bowl according to claim 1, wherein the pressure regulating assembly comprises a pressure regulating seat with a flow passage, a pressure regulating valve core movably arranged on the pressure regulating seat and a first reset elastic piece used for resetting the pressure regulating valve core, the pressure regulating seat is fixed on a pipeline forming the pressure regulating passage, one end of the flow passage is an air outlet end communicated with the pressure regulating passage in a sealing manner, the other end of the flow passage is an air inlet end controlled to be opened and closed by the pressure regulating valve core, a first sealing piece is arranged between the pressure regulating valve core and the air inlet end, and the starting piece is matched with the pressure regulating valve core in a linkage manner.

7. The toilet bowl water discharge device according to claim 6, wherein the actuating member is a button disposed at an upper portion of the valve body of the water discharge valve, the pressure regulating valve core is fixedly connected to a connecting rod, the button is connected to a pressing rod, the pressing rod abuts against the connecting rod when moving downwards along with the button, and the connecting rod drives the pressure regulating valve core to move downwards to open the air inlet end of the through flow passage.

8. The drainage apparatus of a toilet bowl according to claim 7, wherein the height of the link is adjustable up and down.

9. The toilet bowl water discharge device according to claim 8, wherein the connecting rod is a screw rod, the pressure regulating seat is provided with a screw hole which is vertically communicated, the screw rod is connected with the screw hole through threads to adjust the height vertically, the pressure regulating assembly further comprises a nut, and the nut is in threaded fit with the screw rod and abuts against the pressure regulating seat when the screw rod is locked.

10. The toilet bowl water discharge device according to claim 6, wherein the pressure regulating seat is integrally formed with a pipe forming the pressure regulating passage; or, the pressure regulating seat and the pipeline forming the pressure regulating channel are formed in a split mode, and at the moment, a second sealing piece is arranged between the pressure regulating seat and the pipeline forming the pressure regulating channel.

11. The drainage apparatus of a toilet bowl according to claim 1, wherein the discharge valve includes a valve body and a base having the discharge port, and the pressure-regulating passage is installed on the base of the discharge valve and communicates with the discharge port.

12. The toilet drain of claim 1, wherein the drain pipe has a water spot within the drain pipe when the drain port is not open, a level of the water spot within the drain pipe being higher than a level of the water spot within a toilet bowl of the toilet.