CN111719651B

CN111719651B - Water inlet device

Info

Publication number: CN111719651B
Application number: CN202010668812.9A
Authority: CN
Inventors: 林邦福; 林龙成
Original assignee: Xiamen Enmu Intelligent Technology Co ltd
Current assignee: Lin Longcheng
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2023-09-19
Anticipated expiration: 2040-07-13
Also published as: CN111719651A

Abstract

The invention discloses a water inlet device, which comprises a water inlet channel, a first water outlet channel, a second water outlet channel, a back pressure type first control valve, a back pressure type second control valve and a control float barrel; the first control valve is arranged between the water inlet channel and the first water outlet channel, and the control floating barrel can rise or fall along with the water level in the water tank so that the first control valve controls the water inlet channel and the first water outlet channel to be cut off or communicated; the second control valve is arranged between the water inlet channel and the second water outlet channel and used for controlling the water inlet channel and the second water outlet channel to be cut off or communicated with each other, and the second control valve is controlled to be opened by a driving piece. The water inlet device of the invention has the function of not only feeding water into the water tank, but also providing pressurized water to the outside.

Description

Water inlet device

Technical Field

The invention relates to a water inlet device of a toilet water tank.

Background

Most of water inlet devices of the existing toilet water tanks only have the functions of supplying water to the water tank and supplying water to a water seal of a toilet, and when some toilets flush the inner wall surface of a urinal by adopting the water pressure of tap water, a brush ring pipeline communicated with a tap water pipe and a toilet flushing waterway is usually independently arranged, an electromagnetic valve is arranged on the brush ring pipeline, and the inner wall surface of the toilet urinal is flushed by tap water under the control of opening and closing of the electromagnetic valve. Still others have been provided by providing a switching mechanism on the water inlet means for switching the water of the water inlet means to the toilet or to the tank.

Disclosure of Invention

The present invention aims to provide a new water inlet device which has the function of not only feeding water into a water tank, but also providing pressurized water to the outside.

The invention adopts the technical scheme that: a water inlet device comprises a water inlet channel, a first water outlet channel, a second water outlet channel, a back pressure type first control valve, a back pressure type second control valve and a control float;

the first control valve is arranged between the water inlet channel and the first water outlet channel, and the control floating barrel can rise or fall along with the water level in the water tank so that the first control valve controls the water inlet channel and the first water outlet channel to be cut off or communicated;

the second control valve is arranged between the water inlet channel and the second water outlet channel and used for controlling the water inlet channel and the second water outlet channel to be cut off or communicated with each other, and the second control valve is controlled to be opened by a driving piece.

According to the water inlet device, the first control valve and the second control valve are arranged, the first control valve can be used for controlling water supply to the water tank, the second control valve can be used for controlling water supply to the external waterway, the opening of the second control valve is not controlled by the water level of the water tank, and the second control valve is controlled to be opened through the driving piece, so that the opening time of the second control valve can be flexibly designed according to requirements.

Preferably, the driving member is in limit fit with the control float in the floating position when moving from the initial position to a position for opening the second control valve, and the driving member is reset to the initial position after the control float falls down so that the second control valve is closed. In the scheme, the driving piece is limited by controlling the floating barrel, so that after the external force for driving the driving piece is removed, the second control valve can also delay the opening state of the preset time under the action of the driving piece, and the water outlet control of a certain time is kept.

Preferably, the device further comprises a limiting float, wherein the limiting float can rise or fall along with the water level in the water tank, the driving piece is in limiting fit with the limiting float at the floating position when moving from the initial position to the position for opening the second control valve, and when the limiting float falls, the driving piece is reset to the initial position to enable the second control valve to be closed. In the scheme, the driving piece is limited by the limiting floating barrel independent of the control floating barrel, so that after external force for driving the driving piece is removed, the second control valve can also delay the opening state of the preset time under the action of the driving piece, and the water outlet control of a certain time is kept.

Preferably, the device further comprises a small water tank for accommodating the control floating barrel or the limit floating barrel, water in the water tank flows into the small water tank through an opening at the top end of the small water tank, a water drain port is arranged at the bottom of the small water tank, and an adjusting piece for adjusting the size of a through flow section of the water drain port is arranged at the water drain port. In the scheme, the size of the through-flow section of the water drain is adjusted through the adjusting piece, and the water drain time of the small water tank is controlled, so that the falling time of the limiting floating barrel is controlled, the opening time of the second control valve is further controlled, and the control device is simple in structure and reliable in control.

Preferably, a limiting part is arranged between the driving part and the control floating barrel or the limiting floating barrel, the control floating barrel or the limiting floating barrel is limited by the limiting part or is put away from the driving part, the control floating barrel or the limiting floating barrel is driven to move to a limiting position capable of limiting the driving part when floating upwards, and the control floating barrel or the limiting floating barrel is driven to move to a position capable of putting away from the driving part when falling. In the scheme, the limiting piece which can move between the limiting position and the yielding position is arranged, so that the limiting piece is in limiting fit or yielding fit with the driving piece, the driving piece is controlled, and the device is simple in structure and reliable in function.

Preferably, the first control valve comprises a first valve seat with a first valve port, a first elastic valve plate matched with the first valve port in an opening and closing manner, a first back pressure cavity, a first pressure relief opening communicated with the first back pressure cavity and a first connecting rod used for opening and closing the first pressure relief opening, and the water inlet channel is communicated with the first water outlet channel through the first valve port;

the second control valve comprises a second valve seat with a second valve port, a second elastic valve plate matched with the second valve port in an opening and closing mode, a second back pressure cavity, a second pressure relief opening communicated with the second back pressure cavity and a second connecting rod used for opening and closing the second pressure relief opening, and the water inlet channel is communicated with the second water outlet channel through the second valve port.

Preferably, a plug is movably arranged at the second pressure relief opening, the plug closes the second pressure relief opening under the action of an elastic piece, the second connecting rod is in linkage fit with the plug, when the second connecting rod is driven, the second connecting rod overcomes the elastic force of the elastic piece to drive the plug to open the second pressure relief opening so as to control the second control valve to be opened, and the second connecting rod is the driving piece. In the scheme, the second pressure relief opening is opened and closed through the plug, the plug can seal the second pressure relief opening under the action of the elastic piece, and the second connecting rod serving as the driving piece is used for opening the pressure relief opening through the driving plug, so that the pressure relief opening device is simple in structure and reliable in function.

Preferably, one end of the limiting part is connected with the limiting floating barrel, a first barb is arranged at the other end of the limiting part, a second barb matched with the first barb is arranged on the second connecting rod, when the limiting floating barrel floats, the first barb is positioned at a position which can be in limiting fit with the second barb, and when the limiting floating barrel falls, the first barb is positioned at a position which is away from the second barb. In the scheme, the limit part and the second connecting rod are matched with a simple structure, and limit and yielding matching between the limit part and the second connecting rod is reliable.

Preferably, the water tank water supply device further comprises a water tank water outlet for supplying water to the water tank, a water supplementing port for supplying water to the water seal of the toilet, an anti-siphon port communicated with outside air and a pressure water outlet for supplying pressure water to an external waterway, wherein the water flow of the first water outlet channel is split to the water tank water outlet, the water supplementing port and the anti-siphon port, and the water flow of the second water outlet channel is split to the pressure water outlet.

Preferably, the water inlet device comprises an axially extending water inlet pipe provided with a water inlet channel, the first control valve and the second control valve are located at the side of the water inlet pipe, a gland is arranged at the top of the water inlet pipe, a through hole communicated with the water inlet channel is formed in the gland, a filter is hermetically arranged at the through hole, water in the water inlet channel flows to the first control valve and the second control valve after being filtered by the filter, and an anti-siphon suction port communicated with the first water outlet channel is further formed in the gland. In the scheme, the overall layout of the water inlet device is reasonable, and the overall structure is compact.

Preferably, the driving member is in linkage fit with a start switch for controlling the opening of a drain valve in the water tank. In the scheme, the starting switch for controlling the opening of the drain valve is linked with the driving piece, so that the starting switch can be used for opening the drain valve and the second control valve, and the operation is more convenient.

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 a perspective exploded view of a water inlet device according to a preferred embodiment of the present invention;

FIG. 2 is an overall assembly view of a water inlet device according to a preferred embodiment of the present invention;

FIG. 3 is a perspective cross-sectional view of a water inlet device according to a preferred embodiment of the present invention;

FIG. 4 is a side view of a water inlet device according to a preferred embodiment of the present invention;

FIG. 5 is a top view of a water inlet device according to a preferred embodiment of the present invention;

FIG. 6 is a partial perspective view of a water inlet device with a first control valve according to a preferred embodiment of the present invention;

FIG. 7 is a partial perspective view of a water inlet device with a second control valve according to a preferred embodiment of the present invention;

FIG. 8 is a perspective view of a second link (driving member) of the water inlet device according to a preferred embodiment of the present invention;

FIG. 9 is a cross-sectional view of a first control valve of a water inlet device according to a preferred embodiment of the present invention in an unopened state;

FIG. 10 is a cross-sectional view of a second control valve of a water inlet device according to a preferred embodiment of the present invention in an unopened state;

FIG. 11 is a cross-sectional view showing a second control valve of the water inlet apparatus according to a preferred embodiment of the present invention in an opened state;

FIG. 12 is a bottom view of a water inlet device according to a preferred embodiment of the present invention;

FIG. 13 is a block diagram of a control tank and a small tank according to a preferred embodiment of the present invention;

fig. 14 is a cross-sectional view of a control tank and a small tank according to a preferred embodiment of the present invention.

The reference numerals in the drawings are respectively:

10-a body; 11-upper body; 111-gland; 12-a lower body; 121-a water inlet pipe; 13-a water inlet channel; 14-a first water outlet channel; 15-a second water outlet channel; 16-a water tank water outlet; 17-water supplementing port; 18-an anti-siphon port; 19-a pressurized water outlet;

20-a first control valve; 21-a first valve seat; 211-a first valve port; 22-a first elastic valve plate; 23-a first back pressure chamber; 24-a first pressure relief port; 25-a first link;

30-a second control valve; 31-a second valve seat; 311-second valve port; 32-a second elastic valve plate; 33-a second back pressure chamber; 34-a second pressure relief vent; 35-a second link (drive member); 351-a second barb; 36-plugs; 37-an elastic member;

40-controlling the floating barrel; 41-a control water tank;

50-limiting a floating barrel;

60-pulling ropes;

70-limiting piece; 71-a first barb;

80-small water tank; 81-draining port; 82-an adjusting member;

90-filter.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the 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 for purposes of illustration only and are not intended to limit the scope of the invention.

In the following discussion, details are set forth to provide a more thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced without one or more of these details. In particular examples, some technical features that are well known in the art have not been described in detail in order to avoid obscuring the invention. It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", and the like are used herein for illustrative purposes only and are not limiting.

Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

Referring to fig. 1 to 10, a water inlet device according to a first embodiment of the present invention is provided in a water tank (not shown), and includes a main body 10, a water inlet channel 13, a first water outlet channel 14, a second water outlet channel 15, a back pressure type first control valve 20, a back pressure type second control valve 30, and a control float 40. The back pressure type first control valve 20 and the back pressure type second control valve 30 are common structures in the art, and use a pressure difference of water to open water inlet and close water stop.

Specifically, the first control valve 20 includes a first valve seat 21 having a first valve port 211, a first elastic valve plate 22 in opening and closing fit with the first valve port 211, a first back pressure chamber 23, a first pressure relief port 24 communicating with the first back pressure chamber 23, and a first link 25 for opening and closing the first pressure relief port 24, and the water inlet channel 13 communicates with the first water outlet channel 14 through the first valve port 211, and the first valve port 211 is closed or the first valve port 211 is opened under the pressure difference of water in the first elastic valve plate 22. The second control valve 30 includes a second valve seat 31 having a second valve port 311, a second elastic valve sheet 32 opening and closing fitted with the second valve port 311, a second back pressure chamber 33, a second pressure relief port 34 communicating with the second back pressure chamber 33, and a second link 35 for opening and closing the second pressure relief port 34, and the water inlet passage 13 communicates with the second water outlet passage 15 through the second valve port 311, and the second valve port 311 is closed or the second valve port 311 is opened by a pressure difference of water of the second elastic valve sheet 32. Here, since the back pressure type control valve is a well-known technology, the operation principle thereof will not be explained in detail.

The first control valve 20 is disposed between the water inlet channel 13 and the first water outlet channel 14, and controls the float 40 to rise or fall along with the water level in the water tank so that the first control valve 20 controls the water inlet channel 13 and the first water outlet channel 14 to be cut off or communicated. In this embodiment, a control water tank 41 for accommodating the control float 40 is provided.

The second control valve 30 is disposed between the water inlet channel 13 and the second water outlet channel 15, and is used for controlling the water inlet channel 13 and the second water outlet channel 15 to be cut off or communicated, and the second control valve 30 is controlled to be opened by a driving member 35.

According to the water inlet device of the invention, by arranging the first control valve 20 and the second control valve 30, the first control valve 20 can be used for controlling water supply to the water tank, the second control valve 30 can be used for controlling water supply to the external waterway, and the opening of the second control valve 30 is not controlled by the water level of the water tank, and the second control valve 30 is controlled to be opened by the driving piece 35, so that the opening time of the second control valve 30 can be flexibly designed according to the requirement.

In this embodiment, the device further includes a limiting float 50, the limiting float 50 can rise or fall along with the water level in the water tank, the driving member 35 is in limiting fit with the limiting float 50 at the floating position when moving from the initial position to the position for opening the second control valve 30, and when the limiting float 50 falls, the driving member 35 is reset to the initial position to close the second control valve 30. By arranging the limiting float 50 independent of the control float 40 to limit the driving member 35, after the external force for driving the driving member 35 is removed, the second control valve 30 can also delay the opening state for a preset time under the action of the driving member 35, so as to maintain the water outlet control for a certain time.

In this embodiment, the device further includes a small water tank 80 for accommodating the limiting float 50, water in the water tank flows into the small water tank 80 through an opening at the top end of the small water tank 80, a water drain 81 is disposed at the bottom of the small water tank 80, and an adjusting member 82 for adjusting the size of the through-flow cross section of the water drain 81 is disposed at the water drain 81. The size of the through-flow section of the water drain port 81 is regulated by the regulating piece 82, and the water drain time of the small water tank 80 is controlled, so that the falling time of the limiting floating barrel 50 is controlled, and the opening time of the second control valve 30 is controlled, and the structure is simple and the control is reliable. The small water tank 80 of the present embodiment is integrally formed with the control water tank 41.

In this embodiment, a limiting member 70 is disposed between the driving member 35 and the limiting floating barrel 50, the limiting floating barrel 50 limits or yields the driving member 35 through the limiting member 70, and when the limiting floating barrel 50 floats upwards, the limiting member 70 is driven to move to a limiting position capable of limiting the driving member 35, and when the limiting floating barrel 50 falls, the limiting member 70 is driven to move to a yielding position capable of yielding the driving member 35. Through setting up the locating part 70 that can move about between spacing position and position of stepping down, make locating part 70 and driving piece 35 looks spacing cooperation or phase stepping down the cooperation to realize the control to driving piece 35, simple structure, the function is reliable.

Specifically, please refer to fig. 1, 3, 10 and 11, in the present embodiment, one end of the limiting member 70 is connected with the limiting floating barrel 50, the other end is provided with a first barb 71, the second connecting rod 35 is provided with a second barb 351 matching with the first barb 71, when the limiting floating barrel 50 floats, the first barb 71 is located at a position capable of being in limit fit with the second barb 351, and when the limiting floating barrel 50 falls, the first barb 71 is located at a position for giving way to the second barb 351. The matching structure of the limiting piece 70 and the second connecting rod 35 is simple, and the limiting and yielding matching between the limiting piece 70 and the second connecting rod is reliable.

Referring to fig. 1, 3, 10 and 11, in this embodiment, a plug 36 is movably disposed at the second pressure relief opening 34, the plug 36 closes the second pressure relief opening 34 under the action of an elastic member 37, and the elastic member 37 specifically adopts a compression spring that is sprung between the plug 36 and the second valve seat 31. The second connecting rod 35 is in linkage fit with the plug 36, when the second connecting rod 35 is driven, the second connecting rod 35 overcomes the elastic force of the elastic piece 37 to drive the plug 36 to open the second pressure relief opening 34 so as to control the second control valve 30 to open, and the second connecting rod 35 is the driving piece 35. The second pressure relief opening 34 is opened and closed through the plug 36, the plug 36 can seal the second pressure relief opening 34 under the action of the elastic piece 37, and the second connecting rod 35 serving as the driving piece 35 opens the second pressure relief opening 34 through the driving plug 36, so that the structure is simple, and the function is reliable.

In this embodiment, the water supply device further comprises a water tank water outlet 16 for supplying water to the water tank, a water supplementing port 17 for supplying water to the toilet water seal, an anti-siphon port 18 communicated with the outside air, and a pressurized water outlet 19 for supplying pressurized water to the external waterway, wherein the water flow of the first water outlet channel 14 is split to the water tank water outlet 16, the water supplementing port 17 and the anti-siphon port 18, and the water flow of the second water outlet channel 15 is split to the pressurized water outlet 19. The pressure water outlet 19 may be selected for supplying water to the brush ring pipe of the toilet bowl to avoid flushing the interior of the toilet bowl, may be selected for supplying pressure water to a hydraulic drain valve in the tank to open the hydraulic drain valve by water pressure, may be selected for supplying pressure water to a booster bag provided in the waterway, and the like.

In this embodiment, the body 10 includes an upper body 11 and a lower body 12, the lower body 12 further includes an axially extending water inlet pipe 121 formed with a water inlet channel 13, the first control valve 20 and the second control valve 30 are located at the side of the water inlet pipe 121, a gland 111 is disposed at the top of the water inlet pipe 121, a through hole communicating with the water inlet channel 13 is disposed on the gland 111, a filter 90 is sealingly disposed at the through hole, water flowing in the water inlet channel 13 flows to the first control valve 20 and the second control valve 30 after being filtered by the filter 90, and an anti-siphon mouth 18 communicating with the first water outlet channel 14 is further formed on the gland 111. The water inlet device has reasonable overall layout and compact overall structure.

In this embodiment, the driving member 35 is interlocked with a start switch (not shown) for controlling the opening of the drain valve in the water tank. The driving member 35 is linked through the starting switch for controlling the opening of the drain valve, so that the starting switch can be used for opening the drain valve and the second control valve 30, and the operation is more convenient. Specifically, a pull rope 60 is arranged on the body 10, the pull rope 60 is connected with the driving piece 35, the driving piece 35 is driven to swing by a start switch for controlling the opening of the drain valve through the pull rope 60, and the driving piece 35 further drives the plug 36 to open the second pressure relief opening 24, so that the second control valve 30 is opened for water inflow.

The working process of this embodiment is specifically as follows:

referring to fig. 9, at this time, the water tank is in a full water level state, the control float 40 in the control water tank 41 is in a floating state, the first connecting rod 25 closes the first pressure relief opening 24, and the first elastic valve plate 22 closes the first valve port 211 under the action of water pressure, so that the communication between the water inlet channel 13 and the first water outlet channel 14 is cut off.

When the water level of the water tank falls to a preset height, the water level in the control water tank 41 falls to the control floating barrel 40, the control floating barrel 40 falls, the control floating barrel 40 drives the first connecting rod 25 to open the first pressure relief opening 24, so that the first back pressure cavity 23 is relieved, the first elastic valve plate 22 opens the first valve port 211 under the action of the water inlet channel 13, so that the water inlet channel 13 and the first water outlet channel 14 are communicated, most water flows from the water outlet 16 of the water tank into the water tank, a small part of water flows to the water supplementing port 17 for supplementing water for a water seal of the toilet, and a small part of water flows to the anti-siphon opening 18 and flows from the anti-siphon opening 18 into the water tank. The dashed line in fig. 9 is a schematic diagram of the flow direction of the water when the first control valve 20 is opened to feed water.

Referring to fig. 10, in this case, in a state in which the driving member 35 is not driven, the second elastic valve plate 32 closes the second opening 311 under the action of the water pressure difference, and the limiting float 50 is at the floating position, so that the first barb 71 on the limiting member 70 is at a position capable of limiting the second barb 351 on the driving member 35.

Referring to fig. 11, in the state of fig. 10, the start switch of the drain valve is operated, the water flow in the water tank is discharged through the drain valve, so that the water flow in the water tank is reduced, meanwhile, the start switch pulls the driving member 35 through the pull rope 60, the driving member 35 further drives the plug 36 to open the second pressure relief opening 34 against the elastic force of the elastic member 37, so that the second back pressure cavity 33 is relieved, the second elastic valve plate 32 opens the second valve port 311 under the action of the water inlet channel 13, thereby communicating the water inlet channel 13 and the second water outlet channel 15, and the water flow of the second water outlet channel 15 flows to an external waterway such as a brush ring pipeline of the toilet. After the driving member 35 is driven, the second barb 351 on the driving member 35 is in limit fit with the first barb 71 on the limiting member 70, and the limiting float 50 is in a floating position, so that the driving member 35 is kept at a position for opening the second control valve 30 under the effect of limit fit between the second barb 351 and the first barb 71, and the second control valve 30 can be in an opened state for a period of time, so as to provide a sufficient amount of pressurized water for an external waterway. Until the water in the water tank falls to a preset position, and the water in the small water tank 80 also falls to the position where the buoyancy of the limiting float 50 is insufficient through the water drain 81, the limiting float 50 falls and drives the limiting 70 to swing, so that the first barb 71 gives way to the second barb 351, the driving piece 35 loses the limiting function of the limiting float 50 and no longer applies acting force to the plug 36, the plug 36 resets under the action of the elastic piece 37 and closes the second pressure relief opening 34, the second control valve 30 is closed, and the driving piece 35 is driven to reset in the resetting process of the plug 36.

In the second embodiment of the present invention, the control float 40 may be directly used to limit the driving member 35 at the open water inlet position without providing the limiting float 50. Specifically, the driving member 35 is in limit fit with the control float 40 at the floating position when moving from the initial position to the position for opening the second control valve 30, and when the control float 40 falls, the driving member 35 is reset to the initial position to close the second control valve 30. The driving piece 35 is limited by controlling the floating barrel 40, so that after the external force for driving the driving piece 35 is removed, the second control valve 30 can also delay the opening state of the preset time under the action of the driving piece 35, and the water outlet control is kept for a certain time.

Similar to the first embodiment described above, the present invention further includes a small water tank 80 for accommodating the control float 40, water in the water tank flows into the small water tank 80 through a top end opening of the small water tank 80, a drain port 81 is provided at a bottom of the small water tank 80, and an adjusting member 82 for adjusting a size of a through-flow cross section of the drain port 81 is provided at the drain port 81. The size of the through-flow section of the water drain port 81 is regulated by the regulating piece 82, and the water drain time of the small water tank 80 is controlled, so that the falling time of the floating barrel 40 is controlled and the opening time of the second control valve 30 is controlled, and the structure is simple and the control is reliable.

Similar to the first embodiment, a limiting member 70 is disposed between the driving member 35 and the control floating barrel 40, the control floating barrel 40 limits or yields the driving member 35 through the limiting member 70, the control floating barrel 40 drives the limiting member 70 to move to a limiting position capable of limiting the driving member 35 when floating upwards, and drives the limiting member 70 to move to a yielding position capable of yielding the driving member 35 when the control floating barrel 40 falls. Through setting up the locating part 70 that can move about between spacing position and position of stepping down, make locating part 70 and driving piece 35 looks spacing cooperation or phase stepping down the cooperation to realize the control to driving piece 35, simple structure, the function is reliable.

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 pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "component" as used herein may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

While the foregoing description illustrates and describes the preferred embodiments of the present 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 or modifications within the spirit of the invention herein, either as a result of the foregoing teachings or as a result of the knowledge or skill of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.

Claims

1. A water inlet device comprises a water inlet channel, a first water outlet channel, a second water outlet channel, a back pressure type first control valve, a back pressure type second control valve and a control float;

the second control valve is arranged between the water inlet channel and the second water outlet channel and is used for controlling the water inlet channel and the second water outlet channel to be cut off or communicated with each other, and the second control valve is controlled to be opened by a driving piece;

the method is characterized in that:

the driving piece is in linkage fit with a starting switch for controlling the opening of a drain valve in the water tank;

the driving piece is in limit fit with the control floating barrel at the floating position when moving from the initial position to the position for opening the second control valve, and the driving piece is reset to the initial position after the control floating barrel falls down so that the second control valve is closed; or, the device also comprises a limiting floating barrel which can rise or fall along with the water level in the water tank, the driving piece is in limiting fit with the limiting floating barrel at the floating position when moving from the initial position to the position for opening the second control valve, and when the limiting floating barrel falls down, the driving piece is reset to the initial position to enable the second control valve to be closed;

the device also comprises a small water tank for accommodating the control floating barrel or the limit floating barrel, and a water drain port is arranged at the bottom of the small water tank; the control floating barrel or the limiting floating barrel is used for limiting or giving way to the driving piece, the limiting piece is arranged between the driving piece and the control floating barrel or the limiting floating barrel, the control floating barrel or the limiting floating barrel drives the limiting piece to move to a limiting position capable of limiting the driving piece when floating upwards, and the control floating barrel or the limiting floating barrel drives the limiting piece to move to a giving way position capable of giving way to the driving piece when falling.

2. The water inlet device according to claim 1, wherein water in the water tank flows into the small water tank through a top end opening of the small water tank, and an adjusting member for adjusting a size of a through-flow cross section of the water drain is provided at the water drain.

3. The water inlet device according to claim 1, wherein the first control valve comprises a first valve seat with a first valve port, a first elastic valve plate in opening and closing fit with the first valve port, a first back pressure cavity, a first pressure relief port communicated with the first back pressure cavity, and a first connecting rod for opening and closing the first pressure relief port, and the water inlet channel is communicated with the first water outlet channel through the first valve port;

4. The water inlet device according to claim 3, wherein a plug is movably arranged at the second pressure relief opening, the plug closes the second pressure relief opening under the action of an elastic piece, the second connecting rod is in linkage fit with the plug, when the second connecting rod is driven, the second connecting rod overcomes the elastic force of the elastic piece to drive the plug to open the second pressure relief opening so as to control the second control valve to be opened, and the second connecting rod is the driving piece.

5. The water inlet device of claim 4, wherein one end of the limiting piece is connected with the limiting floating barrel, a first barb is arranged at the other end of the limiting piece, a second barb matched with the first barb is arranged on the second connecting rod, when the limiting floating barrel floats, the first barb is positioned at a position capable of being in limiting fit with the second barb, and when the limiting floating barrel falls, the first barb is positioned at a position for giving way to the second barb.

6. The water inlet device according to any one of claims 1 to 5, further comprising a water tank water outlet for supplying water to a water tank, a water replenishment port for supplying water to a toilet water seal, an anti-siphon port communicating with outside air, and a pressurized water outlet for supplying pressurized water to an external waterway, wherein the water flow of the first water outlet passage is branched to the water tank water outlet, the water replenishment port, and the anti-siphon port, and the water flow of the second water outlet passage is branched to the pressurized water outlet.

7. The water inlet device according to any one of claims 1 to 5, comprising an axially extending water inlet pipe with the water inlet channel formed therein, wherein the first control valve and the second control valve are located laterally of the water inlet pipe, a gland is provided at the top of the water inlet pipe, a through hole communicating with the water inlet channel is provided on the gland, a filter is hermetically sealed at the through hole, water in the water inlet channel flows to the first control valve and the second control valve after being filtered by the filter, and an anti-siphon mouth communicating with the first water outlet channel is further formed on the gland.