CN214272291U

CN214272291U - Water inlet device

Info

Publication number: CN214272291U
Application number: CN202022932899.4U
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: 2020-12-09
Publication date: 2021-09-24
Anticipated expiration: 2030-12-09
Also published as: CN214245966U

Abstract

The utility model discloses a water inlet device, which comprises a water inlet channel, a first water outlet channel, a second water outlet channel, a first control valve of a back pressure type, a second control valve of the back pressure type and a control floating 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 through a driving piece. The utility model discloses a water installations has both can be to the function that the water tank was intake, can provide the function of pressurized water to the outside again.

Description

Water inlet device

Technical Field

The utility model relates to a water inlet device of a toilet water tank.

Background

Most of water inlet devices of the existing toilet water tank only have the functions of supplying water to the water tank and supplying water to a water seal of the toilet, when the inner wall surface of a toilet is flushed by 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 on some toilets, an electromagnetic valve is arranged on the brush ring pipeline, and the flushing of the tap water on the inner wall surface of the toilet bowl is controlled by controlling the opening and closing of the electromagnetic valve. Still others have provided a switching mechanism on the water intake device for switching the flow of water from the water intake device to the toilet or to the cistern.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a new water installations, it has both can to the function of intaking of water tank, can provide the function of pressurized water to the outside again.

The utility model adopts the technical proposal that: a water inlet device comprises a water inlet channel, a first water outlet channel, a second water outlet channel, a first backpressure control valve, a second backpressure control valve and a control floating 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 through a driving piece.

According to the utility model discloses a water installations, it is through setting up first control valve and second control valve, and first control valve can be used for supplying water control to the water tank, and the second control valve can be used for supplying water control to outside water route to opening of second control valve does not receive the water level control of water tank, and the second control valve is controlled through the driving piece and is opened, so it opens the opportunity and can carry out nimble design as required.

Preferably, the driving member moves from an initial position to a position for opening the second control valve, and is in limit fit with the control floating barrel in a floating position, and after the control floating barrel falls down, the driving member resets to the initial position so that the second control valve is closed. In the above scheme, carry on spacingly through control keg float to the driving piece for the drive the external force of driving piece is removed the back, and the second control valve also can be at the opening state of the effect downwardly extending time default time of driving piece, keeps the play water control of certain time.

Preferably, the water level control device further comprises a limiting floating barrel, the limiting floating barrel can ascend 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 after the limiting floating barrel falls down, the driving piece resets to the initial position so that the second control valve is closed. In the above scheme, carry on spacingly through the spacing flotation pontoon that is independent of control flotation pontoon to the driving piece, make the drive the external force of driving piece is removed the back, and the second control valve also can be at the opening state of the effect downwardly extending time default time of driving piece, keeps the play water control of certain time.

Preferably, the floating 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 outlet is formed in the bottom of the small water tank, and an adjusting piece for adjusting the size of a through-flow section of the water outlet is arranged at the water outlet. In the above scheme, the size of the through-flow section of the water discharge opening is adjusted through the adjusting piece, and the water discharge 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, the structure is simple, and the control is reliable.

Preferably, the driving piece with be equipped with the locating part between control floating bucket or the spacing floating bucket, control floating bucket or spacing floating bucket pass through the locating part is right the driving piece carries on spacingly or steps down, control floating bucket or drive when spacing floating bucket floats the locating part activity to can be right the driving piece carries out spacing limiting position, control floating bucket or drive when spacing floating bucket falls the locating part activity to can be right the driving piece carries out the position of stepping down that steps down. In the above scheme, through setting up the locating part that can move about between the limiting position and the position of stepping down, make locating part and driving piece spacing cooperation or step down the position cooperation mutually to the realization is to the control of driving piece, simple structure, the function is reliable.

Preferably, the first control valve includes a first valve seat having a first valve port, a first elastic valve plate cooperating with the first valve port in an opening and closing manner, a first back pressure chamber, a first pressure relief port communicating with the first back pressure chamber, and a first link lever for opening and closing the first pressure relief port, and the water inlet passage communicates with the first water outlet passage 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 port communicated with the second back pressure cavity and a second connecting rod used for opening and closing the second pressure relief port, 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 member, 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 member to drive the plug to open the second pressure relief opening so as to control the second control valve to open, and the second connecting rod is the driving member. Among the above-mentioned scheme, through end cap switching second pressure release mouth, the end cap can seal second pressure release mouth under the effect of elastic component, and the second connecting rod as the driving piece opens pressure release mouth through the drive end cap, simple structure, and the function is reliable.

Preferably, the one end of locating part with spacing keg float is connected, and the other end is equipped with first overhead kick, be equipped with on the second connecting rod with first overhead kick matched with second overhead kick, when spacing keg float floated, first overhead kick be located can with the spacing complex position of second overhead kick mutually, when spacing keg float whereabouts, first overhead kick is in right the position that the second overhead kick abdicates. In the above scheme, the matching structure of the limiting part and the second connecting rod is simple, and the limiting and yielding matching between the limiting part and the second connecting rod is reliable.

Preferably, the toilet further comprises a water tank outlet for supplying water to the water tank, a water replenishing port for supplying water to the toilet water seal, 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 divided into the water tank outlet, the water replenishing port and the anti-siphon port, and the water flow of the second water outlet channel flows into the pressure water outlet.

Preferably, the siphon jet-type water heater comprises an axially extending water inlet pipe formed with the water inlet channel, the first control valve and the second control valve are located on 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 arranged at the through hole in a sealing mode, water flow of 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 formed in the gland. In the above scheme, the water inlet device is reasonable in overall arrangement and compact in overall structure.

Preferably, the driving member is in interlocking engagement with a start switch for controlling 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 drain valve can be opened by the starting switch, the second control valve can be opened by the starting switch, 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 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 sectional view of the first control valve of the water inlet device according to a preferred embodiment of the present invention in an unopened state;

fig. 10 is a 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 sectional view of a second control valve of a water inlet device according to a preferred embodiment of the present invention in an open 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 in accordance with a preferred embodiment of the present invention;

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

The reference numbers in the figures are respectively:

10-a body; 11-an upper body; 111-a 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-water tank outlet; 17-water replenishing port; 18-anti-siphon mouth; 19-a pressurized water outlet;

20-a first control valve; 21-a first valve seat; 211-a first valve port; 22-a first resilient valve plate; 23-a first back pressure chamber; 24-a first pressure relief vent; 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-second link (drive); 351-second barbs; 36-plug; 37-an elastic member;

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

50-limiting floating barrel;

60-pulling a rope;

70-a stop; 71-first barbs;

80-a small water tank; 81-a water drainage port; 82-an adjustment member;

90-filter.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only 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 may be practiced without one or more of the specific details. In certain instances, some features that are known in the art have not been described in detail in order to avoid obscuring the present 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 in this application as labels only, and do not have any other meanings, 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 10, a water inlet device according to a first embodiment of the present invention is disposed in a water tank (not shown), and includes a body 10, a water inlet channel 13, a first water outlet channel 14, a second water outlet channel 15, a first back-pressure control valve 20, a second back-pressure control valve 30, and a control float 40. The first control valve 20 and the second control valve 30 are conventional in the art, and use the pressure difference of water to open the water inlet and close the 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 opening and closing 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 connecting rod 25 for opening and closing the first pressure relief port 24, 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 opened by a pressure difference of water of 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 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 connecting rod 35 for opening and closing the second pressure relief port 34, the water inlet channel 13 communicates with the second water outlet channel 15 through the second valve port 311, and the second valve port 311 is closed or opened by the pressure difference of water of the second elastic valve sheet 32. Here, since a back pressure type control valve is a known technique, the operation principle thereof will not be described in detail.

The first control valve 20 is arranged between the water inlet channel 13 and the first water outlet channel 14, and the control floating barrel 40 can 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 is provided for accommodating the control float 40.

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

According to the utility model discloses a water installations, it is through setting up first control valve 20 and second control valve 30, and first control valve 20 can be used for supplying water control to the water tank, and second control valve 30 can be used for supplying water control to outside water route to opening of second control valve 30 does not receive the water level control of water tank, and second control valve 30 controls through driving piece 35 and opens, so it opens the opportunity and can carry out nimble design as required.

In this embodiment, the control device further includes a limiting floating barrel 50, the limiting floating barrel 50 can ascend or descend along with the water level in the water tank, the driving member 35 is in limiting fit with the limiting floating barrel 50 located at the floating position when moving from the initial position to the position for opening the second control valve 30, and after the limiting floating barrel 50 descends, the driving member 35 resets to the initial position to close the second control valve 30. The limit floating barrel 50 independent of the control floating barrel 40 is arranged to limit the driving piece 35, so that after the external force for driving the driving piece 35 is removed, the second control valve 30 can be in an opening state with preset time under the action of the driving piece 35, and the water outlet control for a certain time is kept.

In this embodiment, the floating device further comprises a small water tank 80 for accommodating the limiting floating barrel 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 discharge opening 81 is arranged at the bottom of the small water tank 80, and an adjusting member 82 for adjusting the size of the through-flow section of the water discharge opening 81 is arranged at the water discharge opening 81. The adjusting piece 82 is used for adjusting the size of the through-flow section of the water discharge opening 81 and controlling the water discharge time of the small water tank 80, so that the falling time of the limiting floating barrel 50 is controlled, the opening time of the second control valve 30 is further controlled, and the device is simple in structure and reliable in control. The small water tank 80 of the present embodiment is integrally provided 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 steps down the driving member 35 through the limiting member 70, the limiting member 70 is driven to move to a limiting position where the driving member 35 can limit when the limiting floating barrel 50 floats, and the limiting member 70 is driven to move to a position where the driving member 35 can step down when the limiting floating barrel 50 falls. Through setting up the locating part 70 that can move about between limiting position and the position of stepping down, make locating part 70 and driving piece 35 limit mutually the cooperation or step down mutually the cooperation to realize the control to driving piece 35, simple structure, the function is reliable.

Specifically, please refer to fig. 1, fig. 3, fig. 10 and fig. 11, in this embodiment, one end of the limiting member 70 is connected to the limiting floating barrel 50, the other end of the limiting member is provided with a first barb 71, the second connecting rod 35 is provided with a second barb 351 matched with the first barb 71, when the limiting floating barrel 50 floats, the first barb 71 is located at a position where the limiting member can be matched with the second barb 351 in a limiting manner, and when the limiting floating barrel 50 falls, the first barb 71 is located at a position where the second barb 351 yields. The matching structure of the limiting member 70 and the second connecting rod 35 is simple, and the limiting and abdicating matching between the two is reliable.

Referring to fig. 1, 3, 10 and 11, in the present 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 element 37, and the elastic element 37 specifically adopts a compression spring which is elastically pressed 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 member 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 a driving member 35. The second pressure relief opening 34 is opened and closed by the plug 36, the plug 36 can seal the second pressure relief opening 34 under the action of the elastic element 37, and the second connecting rod 35 serving as the driving element 35 opens the second pressure relief opening 34 by driving the plug 36, so that the structure is simple and the function is reliable.

In this embodiment, the toilet further includes a water tank outlet 16 for supplying water to the water tank, a water replenishing port 17 for supplying water to the toilet water seal, an anti-siphon port 18 communicated with the outside air, and a pressure water outlet 19 for supplying pressure water to the external waterway, wherein the water flow of the first water outlet channel 14 is divided to the water tank outlet 16, the water replenishing port 17 and the anti-siphon port 18, and the water flow of the second water outlet channel 15 flows to the pressure water outlet 19. The pressure water outlet 19 may be selectively used to supply water to a toilet rim pipe to prevent flushing of the interior of a toilet bowl, to supply pressure water to a hydraulic drain valve in a tank to open the hydraulic drain valve by water pressure, to supply pressure water to a pressurizing pack provided in a waterway, and so on.

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 passage 13, the first control valve 20 and the second control valve 30 are located at a side of the water inlet pipe 121, a gland 111 is disposed at a top of the water inlet pipe 121, a through hole communicated with the water inlet passage 13 is formed in the gland 111, a filter 90 is hermetically installed at the through hole, water flowing through the water inlet passage 13 flows to the first control valve 20 and the second control valve 30 after being filtered by the filter 90, and a siphon prevention port 18 communicated with the first water outlet passage 14 is further formed on the gland 111. The water inlet device is reasonable in overall arrangement and compact in overall structure.

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

The working process of the 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 link 25 closes the first pressure relief opening 24, and the first resilient valve sheet 22 closes the first valve port 211 under the action of water pressure, so as to cut off the communication between the water inlet channel 13 and the first water outlet channel 14.

When the water level of the water tank falls to a preset height and the water level in the control water tank 41 falls to the control floating barrel 40 and the buoyancy of the control floating barrel 40 is insufficient, the control floating barrel 40 falls, the control floating barrel 40 further drives the first connecting rod 25 to open the first pressure relief opening 24, so that the pressure of 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 of the water of the first water outlet channel 14 flows to the water tank water outlet 16 to enter the water tank, a small part of the water flows to the water replenishing opening 17 for replenishing water to the water seal of the toilet, and a small part of the water flows to the anti-siphon opening 18 and flows to the water tank from the anti-siphon opening 18. The dashed line in fig. 9 is a schematic diagram of the flow direction of water when the first control valve 20 is opened for water supply.

Referring to fig. 10, at this time, in a state where the driving member 35 is not driven, the second elastic valve sheet 32 closes the second opening 311 under the action of the water pressure difference, and the position-limiting floating barrel 50 is at the floating position, so that the first barb 71 on the position-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, when the start switch of the drain valve is operated, the water in the water tank is discharged through the drain valve, so that the water in the water tank drops, 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 port 34 against the elastic force of the elastic member 37, so that the second back pressure cavity 33 is relieved in pressure, the second valve port 311 is opened by the second elastic valve plate 32 under the action of the water inlet channel 13, so that the water inlet channel 13 and the second water outlet channel 15 are communicated, and the water in the second water outlet channel 15 flows to external water channels such as a brush ring channel of the toilet. After the driving member 35 is driven, the second barbs 351 on the driving member 35 are in spacing fit with the first barbs 71 on the limiting member 70, and since the limiting floating barrel 50 is in the floating position, the driving member 35 is kept at the position for opening the second control valve 30 under the effect of the spacing fit of the second barbs 351 and the first barbs 71, so that the second control valve 30 can be in an opening state for a period of time, and a sufficient amount of pressurized water is provided for the external water path. Until the predetermined position that falls under water in the water tank, lead to the water in the little water tank 80 also to fall to when making spacing keg float 50's buoyancy not enough via drain 81, spacing keg float 50 whereabouts and drive spacing 70 swing, thereby make first overhead kick 71 give way to second overhead kick 351, driving piece 35 loses the limiting displacement of spacing keg float 50 and no longer applys the effort to end cap 36, end cap 36 resets and closes second pressure release 34 under the effect of elastic component 37, thereby make second control valve 30 close, end cap 36 resets in-process and drives driving piece 35 and also reset.

In the second embodiment of the present invention, the limiting floating barrel 50 may not be provided, and the control floating barrel 40 is directly adopted to limit the position of the driving member 35 at the opening position. Specifically, the driving member 35 moves from the initial position to a position for opening the second control valve 30, and is in limit fit with the control float 40 in the floating position, and after the control float 40 falls, the driving member 35 is reset to the initial position so as to close the second control valve 30. Carry on spacingly to driving piece 35 through control keg float 40 for the back is removed to the external force of drive driving piece 35, and second control valve 30 also can be in the opening state of the effect downwardly extending default time of driving piece 35, keeps the play water control of certain time.

Similar to the first embodiment, the floating barrel control device further comprises a small water tank 80 for accommodating the control floating barrel 40, water in the water tank flows into the small water tank 80 through the top end opening of the small water tank 80, a water discharge opening 81 is arranged at the bottom of the small water tank 80, and an adjusting piece 82 for adjusting the size of the through-flow section of the water discharge opening 81 is arranged at the position of the water discharge opening 81. The adjusting piece 82 is used for adjusting the size of the through-flow section of the water discharge opening 81 and controlling the water discharge time of the small water tank 80, so that the falling time of the floating barrel 40 and the opening time of the second control valve 30 are controlled, 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 abdicates the driving member 35 through the limiting member 70, the limiting member 70 is driven to move to a limiting position capable of limiting the driving member 35 when the control floating barrel 40 floats upwards, and the limiting member 70 is driven to move to an abdicating position capable of abdicating the driving member 35 when the control floating barrel 40 falls down. Through setting up the locating part 70 that can move about between limiting position and the position of stepping down, make locating part 70 and driving piece 35 limit mutually the cooperation or step down mutually 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 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, can 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 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 otherwise inapplicable or otherwise stated in the other embodiment.

While the foregoing specification 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 intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as determined by the person of ordinary skill in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A water inlet device is characterized by comprising a water inlet channel, a first water outlet channel, a second water outlet channel, a first backpressure control valve, a second backpressure control valve and a control floating 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 through a driving piece.

2. The water inlet device as claimed in claim 1, wherein the driving member is in limit fit with the control float in the floating position when moving from the initial position to the position for opening the second control valve, and when the control float falls, the driving member is reset to the initial position to close the second control valve.

3. The water inlet device as claimed in claim 1, further comprising a limit float, wherein the limit float can rise or fall with the water level in the water tank, the driving member moves from an initial position to a position for opening the second control valve and is in limit fit with the limit float in the float position, and after the limit float falls, the driving member resets to the initial position to close the second control valve.

4. The water inlet device as claimed in claim 3, further comprising a small water tank for accommodating the control float or the limit float, wherein 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 outlet is arranged at the bottom of the small water tank, and an adjusting member for adjusting the size of the through-flow section of the water outlet is arranged at the water outlet.

5. The water inlet device according to claim 3, wherein a limiting member is disposed between the driving member and the control float or the limiting float, the control float or the limiting float is used for limiting or yielding the driving member via the limiting member, the limiting member is driven to move to a limiting position where the driving member can be limited when the control float or the limiting float floats upwards, and the limiting member is driven to move to a yielding position where the driving member can be yielded when the control float or the limiting float falls.

6. The water inlet device according to claim 5, wherein the first control valve comprises a first valve seat having a first valve port, a first elastic valve sheet fitted to the first valve port in an opening-closing manner, a first back pressure chamber, a first pressure relief port communicating with the first back pressure chamber, and a first link for opening and closing the first pressure relief port, and the water inlet channel communicates with the first water outlet channel through the first valve port;

7. The water inlet device as claimed in claim 6, wherein a plug is movably disposed at the second pressure relief opening, the plug closes the second pressure relief opening under the action of an elastic member, 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 member to drive the plug to open the second pressure relief opening, so as to control the second control valve to open, and the second connecting rod is the driving member.

8. The water inlet device according to claim 7, wherein one end of the limiting member is connected to the limiting floating barrel, the other end of the limiting member is provided with a first barb, the second connecting rod is provided with a second barb matched with the first barb, when the limiting floating barrel floats, the first barb is located at a position where the first barb can be in limiting fit with the second barb, and when the limiting floating barrel falls, the first barb is located at a position where the second barb is abducted.

9. The water inlet device according to any one of claims 1 to 8, further comprising a tank outlet for supplying water to the tank, a refill outlet for supplying water to the toilet seal, an anti-siphon port communicating with the outside air, and a pressure water outlet for supplying pressure water to the external waterway, wherein the water flow of the first water outlet channel is branched to the tank outlet, the refill outlet and the anti-siphon port, and the water flow of the second water outlet channel is branched to the pressure water outlet.

10. The water inlet device according to any one of claims 1 to 8, comprising an axially extending water inlet pipe formed with the water inlet passage, wherein the first control valve and the second control valve are located at the side of the water inlet pipe, a gland is provided at the top of the water inlet pipe, a through hole communicated with the water inlet passage is provided on the gland, a filter is hermetically installed at the through hole, the water in the water inlet passage flows to the first control valve and the second control valve after being filtered by the filter, and an anti-siphon port communicated with the first water outlet passage is further formed on the gland.

11. A water inlet device according to any one of claims 1 to 8 wherein the drive member is in interlocking engagement with an activation switch for controlling the opening of a drain valve in a cistern.