CN210372141U

CN210372141U - Three-way valve and three-way valve assembly

Info

Publication number: CN210372141U
Application number: CN201920738697.0U
Authority: CN
Inventors: 邹新林; 丹尼斯·丰塞卡; 任仕尧
Original assignee: Shenzhen Xifei Technology Co Ltd
Current assignee: Shenzhen Xifei Technology Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-21
Publication date: 2020-04-21
Anticipated expiration: 2029-05-21

Abstract

The embodiment of the utility model discloses a three-way valve and a three-way valve assembly, wherein the three-way valve comprises a valve body, a valve core and a sealing assembly arranged between the valve body and the valve core, the valve core is rotatably arranged inside the valve body, and the valve body is provided with three openings; the sealing assembly comprises four groups of gaskets and sealing rings which are respectively stacked, the four groups of gaskets and the sealing rings are orthogonally arranged by taking the rotating shaft of the valve core as a center, each gasket is attached to the peripheral side face of the valve core, and the three groups of gaskets and the sealing rings are respectively arranged between the valve core and the three openings of the valve body. Through the structure, the inside of the three-way valve can be kept in a sealing state, and fluid is prevented from entering a gap between the valve body and the valve core.

Description

Three-way valve and three-way valve assembly

Technical Field

The embodiment of the utility model provides a relate to beverage preparation machine field, especially relate to a three-way valve and three-way valve assembly.

Background

With the improvement of the living standard of people, beverage preparation machines, such as coffee machines, food processors, tea brewing machines and the like, are increasingly popularized in modern families and workplaces. Beverage preparation machines often adopt the three-way valve outwards to discharge drinks or cleaning waste water, because the sealing performance of three-way valve is relatively poor, fluid or impurity easily get into between valve body and the case and lead to the inside scaling of three-way valve, if the time overlength can produce the peculiar smell, have the health hidden danger.

In view of the above, it is desirable to provide a three-way valve that overcomes the above disadvantages.

Disclosure of Invention

The embodiment of the utility model aims at providing a three-way valve and three-way valve assembly for the inside encapsulated situation that keeps of three-way valve prevents that the fluid from getting into the clearance between valve body and the case.

In order to achieve the above object, the utility model discloses a technical scheme be: the three-way valve comprises a valve body, a valve core and a sealing assembly arranged between the valve body and the valve core, wherein the valve core is rotatably arranged inside the valve body and is provided with three valve ports, and the valve body is provided with three openings;

the sealing assembly comprises four groups of gaskets and sealing rings which are stacked respectively, the four groups of gaskets and the sealing rings are orthogonally arranged by taking a rotating shaft of the valve core as a center, each gasket is attached to the peripheral side face of the valve core, and the three groups of gaskets and the sealing rings are arranged between the valve core and the three openings of the valve body respectively.

In some embodiments, the valve core is of a round cake-shaped structure and comprises a circular arc curved surface and circular planes positioned on two sides of the circular arc curved surface, and the three valve ports of the valve core are all arranged on the circular arc curved surface;

the valve core is provided with a first sealing groove along the edges of the two circular planes;

the sealing assembly further comprises a sealing element which is embedded in the first sealing groove, and the upper surface of the sealing element slightly protrudes out of the first sealing groove.

In some embodiments, the valve core is provided with second sealing grooves along the edges of the three valve ports, and the second sealing grooves of the three valve ports and the first sealing grooves of the two circular planes are communicated with each other to form the sealing grooves of the valve core;

the sealing element is matched with the sealing groove, the sealing element is embedded in the sealing groove, and the upper surface of the sealing element slightly protrudes out of the sealing groove.

In some embodiments, the valve body comprises a main housing, an upper end cover and a water discharge nozzle, wherein the main housing is provided with a first opening, a second opening and a third opening, and the first opening and the second opening are oppositely arranged;

the upper end cover with the water drainage nozzle install respectively in the first opening and the third opening of main casing body, the upper end cover be provided with the relative inflow entrance of first opening, the water drainage nozzle be provided with the relative outlet of third opening, the second opening is used for being connected with water outlet assembly.

In some embodiments, the four sets of gaskets and seal rings are a first gasket and a first seal ring, a second gasket and a second seal ring, a third gasket and a third seal ring, a fourth gasket and a fourth seal ring, respectively;

the first gasket and the first sealing ring are stacked between the valve core and the inflow port of the upper end cover, the second gasket and the second sealing ring are stacked between the valve core and the second outlet of the main shell, and the third gasket and the third sealing ring are stacked between the valve core and the water outlet of the water discharge nozzle;

the main casing body includes the end lateral wall, the end lateral wall is relative with the third opening and its toward keeping away from the direction concave of third opening and establishing, the case with it is provided with to stack up between the end lateral wall fourth packing ring and fourth sealing washer.

In some embodiments, a first O-ring is disposed between the upper end cap and the main housing, and a second O-ring is disposed between the drain nozzle and the main housing.

In another aspect, a three-way valve assembly is also provided, which includes a drive control assembly and the three-way valve as described above, wherein the drive control assembly is connected to a valve core and is used for controlling the rotation angle of the valve core in a valve body;

the drive control assembly comprises a mounting seat, a rotating shaft, an angle control switch and a driving device, wherein the angle control switch is mounted on the mounting seat, and the rotating shaft penetrates through the mounting seat and the main shell and is assembled with the valve core.

In some embodiments, the angle control switches comprise a first angle switch, a second angle switch, a third angle switch, and a fourth angle switch;

the first angle switch and the third angle switch are arranged oppositely and are installed on one surface of the mounting seat, which is away from the three-way valve, the second angle switch and the fourth angle switch are arranged oppositely and are installed on one surface of the mounting seat, which is opposite to the three-way valve, and the first angle switch, the second angle switch, the third angle switch and the fourth angle switch are orthogonally arranged by taking the rotating shaft as a center;

the pivot is in the both sides of mount pad are provided with first flange and second flange respectively, first flange is used for triggering first angle switch with third angle switch, the second flange is used for triggering second angle switch with fourth angle switch.

In some embodiments, the first angle switch, the second angle switch, the third angle switch, and the fourth angle switch are sequentially arranged counterclockwise;

the second flange is of a fan-shaped structure and comprises a first abutting part and a second abutting part, and the first abutting part is closer to the first flange than the second abutting part;

the second abutting portion triggers the second angle switch in a process in which the first flange is rotated from the first angle switch to the third angle switch;

in a process in which the first flange is rotated from the third angle switch to the first angle switch, the first contact portion triggers the fourth angle switch.

In some embodiments, one end of the rotating shaft connected to the valve core is provided with a convex abutting part, one surface of the valve core connected to the rotating shaft is provided with a convex groove, and the convex abutting part is matched with the convex groove;

the part of the rotating shaft penetrating through the main shell is sleeved with at least one third O-shaped ring.

In some embodiments, the three-way valve assembly further comprises a water outlet assembly, the water outlet assembly comprises a water outlet cover and a connecting ring fixed on the inner side of the water outlet cover, a water outlet nozzle is arranged in the center of the water outlet cover, and the connecting ring is used for realizing the sealing connection between the second opening of the main housing and the water outlet nozzle;

the inner side wall of the water outlet nozzle is provided with a flow guide block, and the flow guide blocks are circumferentially arrayed by taking the central axis of the water outlet nozzle as a central line;

the side of the water outlet cover is provided with a buckle structure, and the buckle structure is detachably connected with a shell of external equipment.

Compared with the prior art, the embodiment of the utility model provides a case of three-way valve is provided with four group's packing rings and the sealing washer of range upon range of setting respectively, and four group's packing rings and sealing washer use the pivot of case to set up as center quadrature to each packing ring all laminates in the week side of case, and wherein three group's packing rings and sealing washer set up respectively between the three opening of case and valve body, make the case when the inside of valve body rotates, can keep encapsulated situation between case and the valve body, prevent the clearance between fluid entering valve body and the case.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a perspective view of a three-way valve assembly according to one embodiment of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

FIG. 3 is an exploded view of the valve body of FIG. 1;

FIG. 4 is an exploded view of the water outlet assembly of FIG. 1;

FIG. 5 is a cross-sectional view of the three-way valve of FIG. 1;

fig. 6 is a schematic view of a partial internal structure of a three-way valve according to another embodiment of the present invention;

fig. 7 is a cross-sectional view of a three-way valve according to another embodiment of the present invention;

FIG. 8 is an exploded view of the drive control assembly of FIG. 1;

FIG. 9 is a perspective view of the spindle of FIG. 8;

FIG. 10 is another state diagram of the three-way valve of FIG. 7;

fig. 11 is another state diagram of the three-way valve of fig. 7.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, an embodiment of the present invention provides a three-way valve assembly 100, the three-way valve assembly 100 includes: the three-way valve 10 comprises a valve body 11, a valve core 12 and a sealing component arranged between the valve body 11 and the valve core 12, the valve core 12 is provided with a flow passage, the valve core 12 is rotatably arranged inside the valve body 11, and the drive control component 30 is connected with the valve core 12 and used for controlling the rotation angle of the valve core 12 in the valve body 11.

The valve body 11 includes a main housing 111, an upper end cap 112, and a drain nozzle 113. Wherein, upper end cover 112 and water drainage mouth 113 are all installed in main casing body 111, still are equipped with the delivery port on main casing body 111, and delivery port and play water subassembly 20 can dismantle the connection.

The main housing 111 is a cavity structure, that is, the main housing 111 is hollow, the upper end of the main housing 111 is provided with a first opening 1111, the lower end of the main housing is provided with a second opening 1112, the second opening 1112 is a water outlet, the side surface of the main housing is provided with a third opening 1113 for allowing the wastewater flowing through the valve core 12 to be discharged, and the first opening 1111 may be communicated with the second opening 1112 or the third opening 1113 through the internal cavity of the valve core 12.

The upper cover 112 is mounted to the first opening 1111 of the main housing 111, and the upper cover 112 is provided with an inflow port 1121 opposite to the first opening 1111, the inflow port 1121 for allowing an external fluid to flow into the valve cartridge 12. Taking the three-way valve assembly 100 as an example of being applied to a beverage preparation machine, the three-way valve 10 may be installed below a stirring cavity of the beverage preparation machine through the upper end cover 112, so that a fluid inside the stirring cavity may enter the valve core 12 through the inflow port 1121, and then flow to different directions through a flow passage of the valve core 12.

Optionally, the upper end cap 112 is mounted in the first opening 1111 of the main housing 111 in an inverted circular disk shape, and forms a substantially circular disk-shaped cavity with the inner cavity of the main housing 111.

The water outlet assembly 20 is mounted to the second opening 1112 of the main housing 111 and is disposed opposite to the upper end cap 112 for allowing the fluid flowing through the valve core 12 to flow out. As shown in fig. 4, the water outlet assembly 20 includes a water outlet cover 21 and a connecting ring 22 fixed inside the water outlet cover 21, the water outlet nozzle 211 is opened at the center of the water outlet cover 21, and the connecting ring 22 is disposed at the upper end edge of the water outlet nozzle 211 for achieving a sealing connection between the second opening 1112 and the water outlet nozzle 211, i.e. preventing the beverage from entering the fit gap between the main housing 111 and the water outlet cover 21.

Go out the week side of water cover 21 and be provided with buckle structure 212, buckle structure 212 is used for can dismantling with the casing of beverage preparation machine and is connected, and the user can dismantle water outlet assembly 20 as required and wash, prevents that water outlet assembly 20 from appearing the scaling because of using for a long time.

The inner side wall of the water outlet nozzle 211 is provided with a flow guide block 213, the flow guide blocks 213 are circumferentially arrayed by taking the central axis of the water outlet nozzle 211 as a central line, and the flow guide blocks 213 can guide and shunt the flowing fluid, so that the phenomena of swinging and burst spraying of the fluid can be effectively prevented, and the fluid can smoothly flow out of the water outlet.

The drain nozzle 113 covers the third opening 1113, and the drain nozzle 113 is provided with a drain opening 1131 opposite to the third opening 1113 for allowing the waste water flowing through the valve body 12 to be discharged to the outside. Specifically, a drain pipe may be connected to the drain nozzle 113 to guide the wastewater flowing out of the drain nozzle 113 to a predetermined position for discharge.

As shown in fig. 2 and 5, the valve core 12 is a circular cake-shaped structure, and includes an arc curved surface and two circular planes, the two circular planes are respectively located at two sides of the arc curved surface to form an outer contour of the valve core 12, and the valve core 12 is adapted to the cavity inside the valve body 11.

The valve body 12 is provided with a first port 121, a second port 122, and a third port 123 on an arc curved surface, the first port 121 and the second port 122 are disposed opposite to each other and communicate with each other to form a first flow passage 1201, and the first flow passage 1201 is radially disposed in the valve body 12. The third port 123 is located on one side of the first flow channel 1201 and communicates with the first flow channel 1201 to form a second flow channel 1202, and the first flow channel 1201 and the second flow channel 1202 are arranged at a predetermined angle.

When the valve core 12 rotates in the cavity of the valve body 11, the three-way valve 10 can be in a predetermined working state, which can include a standby state, a stirring/cleaning state and a drinking state. The standby state is a state in which the second flow passage 1202 communicates with the first opening 1111 and the first flow passage 1201 communicates with the third opening 1113, that is, the third valve port 123 is at least partially communicated with the first opening 1111 and the first valve port 121 is at least partially communicated with the third opening 1113; the stirring/cleaning state is a state when the first flow channel 1201 and the second flow channel 1202 are both staggered with the first opening 1111 and the second opening 1112, that is, the first valve port 121, the second valve port 122, and the third valve port 123 are all staggered with the first opening 1111 and the second opening 1112, and at this time, fluid cannot enter the first flow channel 1201 or the second flow channel 1202 of the valve element 12; the drinking state is a state in which the first flow passage 1201 communicates the first opening 1111 with the second opening 1112 and the second flow passage 1202 is misaligned with the third opening 1113, that is, the first port 121 communicates at least partially with the first opening 1111, the second port 122 communicates at least partially with the second opening 1112, and the third port 123 is misaligned with the first opening 1111, the second opening 1112, and the third opening 1113.

The sealing assembly comprises four groups of gaskets and sealing rings which are respectively stacked, the four groups of gaskets and the sealing rings are orthogonally arranged by taking a rotating shaft of the valve core 12 as a center, and each gasket is attached to the peripheral side surface of the valve core 12, namely, the attachment part of the valve core 12 and each gasket is tightly sealed, so that when a valve port of the valve core 12 is communicated with an opening of the valve body 11, a sealing and blocking state is kept between the valve port edge of the valve core 12 and the valve body 11, and fluid or impurities are prevented from entering a gap between the valve core 12 and the valve body 11.

Specifically, the four sets of gaskets and seals are a first gasket 131 and a first seal 135, a second gasket 132 and a second seal 136, a third gasket 133 and a third seal 137, and a fourth gasket 134 and a fourth seal 138, respectively.

The first gasket 131 and the first seal ring 135 are provided between the valve body 12 and the inflow port 1121 of the upper end cap 112. The first gasket 131 is attached to the arc curved surface of the valve element 12, and the valve element 12 can be attached to the first gasket 131 all the time when rotating, so that the attachment of the arc curved surface of the valve element 12 and the first gasket 131 is tightly sealed all the time, that is, when the first flow channel 1201 or the second flow channel 1202 is communicated with the inflow port 1121, fluid or impurities cannot enter the gap between the valve element 12 and the main housing 111 from the attachment. The first gasket 135 is located between the first gasket 131 and the inflow port 1121, and seals a gap between the first gasket 131 and the inflow port 1121. A first O-ring 1301 is provided between the upper cover 112 and the main housing 111 for sealing a gap between the upper cover 112 and the main housing 111.

The second gasket 132 and the second seal ring 136 are disposed between the spool 12 and the second opening 1112 of the main housing 111. The second gasket 132 is attached to the arc curved surface of the valve core 12, and the valve core 12 can be attached to the second gasket 132 all the time when rotating, so that the attachment of the arc curved surface of the valve core 12 and the second gasket 132 is sealed tightly all the time, that is, when the first flow channel 1201 is communicated with the water outlet nozzle 211, fluid or impurities cannot enter the gap between the valve core 12 and the main housing 111 from the attachment. The second sealing ring 136 is located between the second gasket 132 and the second opening 1112, and is used for sealing a gap between the second gasket 132 and the second opening 1112, that is, the water outlet.

The third gasket 133 and the third seal 137 are provided between the valve body 12 and the drain port 1131 of the drain nozzle 113. The third gasket 133 is attached to the arc curved surface of the valve element 12, and the valve element 12 can be attached to the third gasket 133 all the time when rotating, so that the attachment between the arc curved surface of the valve element 12 and the third gasket 133 is sealed tightly all the time, that is, fluid or impurities cannot enter the gap between the valve element 12 and the main housing 111 from the attachment when the first flow passage 1201 is communicated with the water outlet nozzle 211. A third seal ring 137 is provided between the third gasket 133 and the drain opening 1131 for sealing a gap between the third gasket 133 and the drain opening 1131. A second O-ring 1302 is provided between the drain nozzle 113 and the main housing 111 for sealing a gap between the drain nozzle 113 and the main housing 111.

The main housing 111 includes an end side wall opposite to the third opening 1113 and recessed away from the third opening 1113 to fit with the arc curved surface of the spool 12. A fourth gasket 134 and a fourth seal 138 are provided between the spool 12 and the end side wall. The fourth gasket 134 is attached to the arc curved surface of the valve element 12, and the valve element 12 can be attached to the fourth gasket 134 all the time when rotating, so that the attachment between the arc curved surface of the valve element 12 and the fourth gasket 134 is sealed tightly all the time, that is, when the first flow channel 1201 faces the end side wall, fluid or impurities cannot enter the gap between the valve element 12 and the main housing 111 from the attachment. A fourth gasket 138 is located between the fourth gasket 134 and the end side wall.

The first gasket 131, the second gasket 132, the third gasket 133 and the fourth gasket 134 are orthogonally disposed on the arc curved surface of the valve core 12 with the rotation axis of the valve core 12 as the center, and the first gasket 135, the second gasket 136, the third gasket 137 and the fourth gasket 138 are axially compressed by the first gasket 131, the second gasket 132, the third gasket 133 and the fourth gasket 134, respectively, so that the valve core 12 moves more smoothly in the cavity of the valve body 11, and the sealing performance between the valve core 12 and the main housing 111 can be ensured.

With the above design, the fitting clearance between the valve cartridge 12 and the main housing 111 may be 0.05mm, so that fluid or foreign substances (e.g., juice) are difficult to enter between the valve cartridge 12 and the main housing 111, preventing fouling from occurring between the valve cartridge 12 and the main housing 111.

Alternatively, as shown in fig. 6, the circular arc curved surface of the valve core 12 is provided with a first sealing groove 1203A at two circular plane edges, the circular arc curved surface of the valve core 12 is provided with a second sealing groove 1203B along the first port 121, the second port 122 and the third port 123, and the first sealing groove 1203A and the second sealing groove 1203B are communicated to form a sealing groove 1203 of the valve core 12.

The seal assembly further includes a seal 139, the seal 139 fitting into a seal groove 1203, the seal 139 being insert-mounted into the seal groove 1203 and applying a clamping force to the valve core 12 such that the seal 139 is secured in the seal groove 1203. When the sealing element 139 is installed in the sealing groove 1203, the upper surface of the sealing element 139 slightly protrudes from the sealing groove 1203, that is, the thickness of the sealing element 139 is slightly greater than the depth of the sealing groove 1203, so that when the valve element 12 is installed inside the valve body 11, the edges of the first valve port 121, the second valve port 122, and the third valve port 123 can be completely sealed with the valve body 11, and the sealing element 139 protrudes from the arc curved surface of the valve element 12, so that the arc curved surface of the valve element 12 can be prevented from directly contacting with the inner side wall of the main housing 111, and the friction between the valve element 12 and the main housing 111. The seal 139 may be a unitary structure.

As shown in fig. 7, the valve element 12 embedded with the sealing member 139 is rotatably installed in the cavity of the valve body 11 and can rotate in the cavity, and during rotation, the sealing member 139 seals and blocks the edges of the first port 121, the second port 122 and the third port 123 of the valve element 12 from the inner wall of the main housing 111, that is, fluid or impurities cannot enter the assembly gap between the valve element 12 and the main housing 111 through the edges of the first port 121, the second port 122 and the third port 123 of the valve element 12, so that the valve element 12 and the main housing 111 always maintain a clean and foreign-substance-free state.

It will be appreciated that in some other embodiments, the second sealing grooves may be omitted, the sealing members are matched with the first sealing grooves, one first sealing groove is embedded with one sealing member, and the upper surface of each sealing member slightly protrudes out of the corresponding first sealing groove, so that the two circular plane edges of the valve core 12 can be completely sealed with the inner side wall of the main housing 111, and fluid is prevented from entering the assembly gap between the two circular planes of the valve core 12 and the main housing 111.

It will be appreciated that the valve core 12 may have other configurations, such as a spherical configuration, and the configuration of the sealing member 139 may be determined according to the positions of the first port 121, the second port 122, and the third port 123.

The driving control assembly 30 is disposed at one side of the valve body 11 and connected to the valve core 12 for driving the valve core 12 to rotate to a predetermined angle, so that the three-way valve 10 is in a corresponding operating state. Referring to fig. 8, the driving control assembly 30 includes a mounting base 31, a rotating shaft 32, an angle control switch 33 and a driving device 34, wherein the angle control switch 33 is mounted on the mounting base 31. The driving device 34 is connected to one end of the rotating shaft 32 and fixed to the mounting seat 31 for driving the rotating shaft 32 to rotate, and the driving device 34 may be a motor.

The mount 31 is mounted to one side of the main housing 111 and is disposed parallel to the circular plane of the valve core 12. The mounting seat 31 is provided with a first shaft hole, the main housing 111 is provided with a second shaft hole, the first shaft hole and the second shaft hole are oppositely arranged, the rotating shaft 32 respectively passes through the first shaft hole 311 and the second shaft hole 1114 to be connected to the valve core 12, and the rotating shaft 32 can rotate around the central axis of the rotating shaft 32 to drive the valve core 12 to rotate. Wherein, the end of the rotating shaft 32 connected with the valve core 12 is provided with a convex protrusion, one side of the valve core 12 connected with the rotating shaft 32 is provided with a convex groove, the convex protrusion is matched with the convex groove, and at least part of the convex protrusion is accommodated in the convex groove. Two third O-rings 1303 are disposed on the portion of the rotating shaft 32 penetrating the main housing 111, and are used for sealing the gap between the rotating shaft 32 and the inner wall of the main housing 111.

The angle control switch 33 includes a first angle switch 331, a second angle switch 332, a third angle switch 333, and a fourth angle switch 334. The first angle switch 331, the second angle switch 332, the third angle switch 333, and the fourth angle switch 334 are respectively installed at four different positions of the mounting seat 31, and when the rotating shaft 32 rotates, the valve core 12 can be respectively controlled to rotate to a predetermined angle and the corresponding angle control switch 33 can be simultaneously triggered, so as to implement different functional actions of the valve core 12 in the valve body 11, and control the three-way valve 10 to enter different working states.

Referring to fig. 9, the rotating shaft 32 is provided with a first flange 321 and a second flange 322, the first flange 321 and the second flange 322 are respectively located at two sides of the mounting seat 31, the first flange 321 is far away from the valve core 12 than the second flange 322, the first flange 321 is used for triggering the first angle switch 331 and the third angle switch 333, and the second flange 322 is used for triggering the second angle switch 332 and the fourth angle switch 334. The first flange 321 and the second flange 322 are in the same projection plane in the axial direction of the rotating shaft 32, and the first flange 321 and the second flange 322 are partially overlapped.

The first flange 321 is generally rectangular in configuration and the second flange 322 is generally fan-shaped in configuration. The second flange 322 includes an arc surface 3221, a first contact portion 3222, and a second contact portion 3223, and the first contact portion 3222 and the second contact portion 3223 are respectively located at two ends of the arc surface 3221. The first abutment portion 3222 is closer to the first flange 321 than the second abutment portion 3223.

First angle switch 331 and third angle switch 333 install in the one side that the mount pad 31 deviates from valve body 11, and first angle switch 331 and third angle switch 333 set up relatively to be located the upper and lower both sides of pivot 32, when pivot 32 rotated, when first flange 321 butt first angle switch 331 or third angle switch 333, can trigger first angle switch 331 or third angle switch 333.

Second angle switch 332 and fourth angle switch 334 are installed in the one side that mount pad 31 and valve body 11 are relative, and second angle switch 332 and fourth angle switch 334 set up relatively to be located the left and right sides of pivot 32, when pivot 32 rotated, at second flange 322 butt second angle switch 332 or fourth angle switch 334, can trigger second angle switch 332 or fourth angle switch 334. The first angle switch 331, the second angle switch 332, the third angle switch 333, and the fourth angle switch 334 are orthogonally disposed on the mounting base 31 with the rotation shaft 32 as a center, and the first angle switch 331, the second angle switch 332, the third angle switch 333, and the fourth angle switch 334 are sequentially disposed counterclockwise.

In the present embodiment, the four angle control switches 33 are all micro switches. The angle control switch 33 includes a driving end and a switch body, and the driving end is disposed outside the switch body and elastically connected to an internal structure of the switch body. When the rotating shaft 32 abuts against the driving end and applies acting force to the driving end, the driving end is displaced, and when the driving end moves to a critical point, an internal structure of the switch body generates instantaneous action, so that a movable contact and a fixed contact in the switch body are quickly connected or disconnected; when the acting force applied to the driving end by the rotating shaft 32 is removed, the driving end generates a reverse action force, the driving end generates reverse displacement, and after the driving end reaches another critical point, the reverse action is instantly completed, so that the movable contact and the fixed contact in the switch body are quickly disconnected or connected.

Referring to fig. 7 and fig. 10-11, in operation, the rotating shaft 32 can rotate clockwise 180 degrees first and then rotate clockwise 180 degrees, thereby completing the control of the rotation angle of the valve core 12.

Specifically, referring to fig. 7, when the three-way valve 10 is in an initial state (i.e., a standby state), the rotating shaft 32 is located at an initial position, and the angle of the initial position is set to be 0 °, at this time, the first flange 321 abuts against the first angle switch 331; referring to fig. 10, when the rotating shaft 32 rotates from 0 ° to 90 ° clockwise, the first flange 321 moves relative to the first angle switch 331 and moves away from the first angle switch 331 until the first angle switch 331 is turned off, and meanwhile, the second abutting portion 3223 of the second flange 322 presses against the second angle switch 332 until the second angle switch 332 is triggered, and the three-way valve 10 is in a stirring state. Referring to fig. 11, after the first preset time is delayed, the rotating shaft 32 continues to rotate clockwise from 90 ° to 180 °, in the process, the first flange 321 is pressed toward the third angle switch 333 until the third angle switch 333 is triggered, and meanwhile, the second abutting portion 3223 of the second flange 322 moves away from the second angle switch 332 relative to the second angle switch 332 until the second angle switch 332 is turned off, and at this time, the three-way valve 10 is in the drinking state.

Referring back to fig. 10, after the second predetermined time, the rotating shaft 32 is reversed from 180 ° to 90 °, in the process, the first flange 321 moves relative to the third angle switch 333 and moves away from the third angle switch 333 until the third angle switch 333 is turned off, and meanwhile, the first contact portion 3222 of the second flange 322 presses the fourth angle switch 334 until the fourth angle switch 334 is triggered, and at this time, the three-way valve 10 is in the cleaning state. Referring back to fig. 7, after the third preset time is delayed, the rotating shaft 32 continues to rotate reversely from 90 ° to 0 °, in the process, the first flange 321 is pressed toward the first angle switch 331 until the first angle switch 331 is triggered, and meanwhile, the first abutting portion 3222 of the second flange 322 moves relative to the fourth angle switch 334 and moves away from the fourth angle switch 334 until the fourth angle switch 334 is turned off, and at this time, the three-way valve 10 is in a standby state (i.e., an initial state).

The four angle control switches 33 are single trigger control, that is, the second angle switch 332, the third angle switch 333, the fourth angle switch 334 and the first angle switch 331 can be sequentially triggered one by one when the rotating shaft 32 rotates, and the rotation angle of the three-way valve 10 can be accurately controlled by the four angle control switches 33.

It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. A three-way valve (10) is characterized by comprising a valve body (11), a valve core (12) and a sealing assembly arranged between the valve body (11) and the valve core (12), wherein the valve core (12) is rotatably arranged inside the valve body (11), the valve core (12) is provided with three valve ports, and the valve body (11) is provided with three openings;

the sealing assembly comprises four groups of gaskets and sealing rings which are respectively stacked, the four groups of gaskets and the sealing rings are orthogonally arranged by taking a rotating shaft of the valve core (12) as a center, each gasket is attached to the peripheral side face of the valve core (12), and the three groups of gaskets and the sealing rings are respectively arranged between three openings of the valve core (12) and the valve body (11).

2. A three-way valve according to claim 1,

the valve core (12) is of a round cake-shaped structure and comprises an arc curved surface and round planes positioned at two sides of the arc curved surface, and three valve ports of the valve core (12) are arranged on the arc curved surface;

the valve core (12) is provided with a first sealing groove (1203A) along the edges of the two circular planes;

the sealing assembly (13) further comprises a sealing element (139), wherein the sealing element (139) is embedded in the first sealing groove (1203A), and the upper surface of the sealing element slightly protrudes out of the first sealing groove (1203A).

3. A three-way valve according to claim 2,

the valve core (12) is provided with second sealing grooves (1203B) along the edges of the three valve ports, and the second sealing grooves (1203B) of the three valve ports and the first sealing grooves (1203A) of the two circular planes are communicated with each other to form the sealing grooves (1203) of the valve core (12);

the sealing element (139) is matched with the sealing groove (1203), the sealing element (139) is embedded in the sealing groove (1203), and the upper surface of the sealing element slightly protrudes out of the sealing groove (1203).

4. A three-way valve according to any one of claims 1-3,

the valve body (11) comprises a main shell (111), an upper end cover (112) and a water discharging nozzle (113), the main shell (111) is provided with a first opening (1111), a second opening (1112) and a third opening (1113), and the first opening (1111) and the second opening (1112) are oppositely arranged;

the upper end cover (112) and the water discharging nozzle (113) are respectively installed on a first opening (1111) and a third opening (1113) of the main shell body (111), the upper end cover (112) is provided with a flow inlet (1121) opposite to the first opening (1111), the water discharging nozzle (113) is provided with a water discharging port (1131) opposite to the third opening (1113), and the second opening (1112) is used for being connected with a water discharging assembly (20).

5. A three-way valve according to claim 4,

the four groups of gaskets and sealing rings are respectively a first gasket (131) and a first sealing ring (135), a second gasket (132) and a second sealing ring (136), a third gasket (133) and a third sealing ring (137), and a fourth gasket (134) and a fourth sealing ring (138);

the first gasket (131) and the first sealing ring (135) are stacked between the valve element (12) and the inflow port (1121) of the upper end cap (112), the second gasket (132) and the second sealing ring (136) are stacked between the valve element (12) and the second opening (1112) of the main housing (111), and the third gasket (133) and the third sealing ring (137) are stacked between the valve element (12) and the drain port (1131) of the drain nozzle (113);

the main casing (111) comprises an end side wall, the end side wall is opposite to the third opening (1113) and is concavely arranged in the direction far away from the third opening (1113), and the fourth gasket (134) and the fourth sealing ring (138) are stacked between the valve core (12) and the end side wall.

6. A three-way valve according to claim 4,

a first O-ring (1301) is arranged between the upper end cover (112) and the main shell (111), and a second O-ring (1302) is arranged between the drainage nozzle (113) and the main shell (111).

7. A three-way valve assembly, characterized in that it comprises a drive control assembly and a three-way valve according to any of claims 1-6, the drive control assembly (30) being connected to the spool (12) for controlling the angle of rotation of the spool (12) in the valve body (11);

the driving control assembly comprises an installation seat (31), a rotating shaft (32), an angle control switch (33) and a driving device (34), the angle control switch (33) is installed on the installation seat (31), and the rotating shaft (32) penetrates through the installation seat (31) and the valve body (11) to be assembled with the valve core (12).

8. The three-way valve assembly of claim 7,

the angle control switch (33) comprises a first angle switch (331), a second angle switch (332), a third angle switch (333) and a fourth angle switch (334);

the first angle switch (331) and the third angle switch (333) are arranged oppositely and mounted on one surface of the mounting seat (31) which is far away from the three-way valve (10), the second angle switch (332) and the fourth angle switch (334) are arranged oppositely and mounted on one surface of the mounting seat (31) which is opposite to the three-way valve (10), and the first angle switch (331), the second angle switch (332), the third angle switch (333) and the fourth angle switch (334) are arranged orthogonally by taking the rotating shaft (32) as a center;

the rotating shaft (32) is arranged on two sides of the mounting seat (31) and is provided with a first flange (321) and a second flange (322) respectively, the first flange (321) is used for triggering the first angle switch (331) and the third angle switch (333), and the second flange (322) is used for triggering the second angle switch (332) and the fourth angle switch (334).

9. The three-way valve assembly of claim 8,

the first angle switch (331), the second angle switch (332), the third angle switch (333) and the fourth angle switch (334) are arranged anticlockwise in sequence;

the second flange (322) is of a fan-shaped structure and comprises a first abutting part (3222) and a second abutting part (3223), and the first abutting part (3222) is closer to the first flange (321) than the second abutting part (3223);

-said second abutment (3223) triggers said second angular switch (332) during the rotation of said first flange (321) from said first angular switch (331) to said third angular switch (333);

the first contact portion (3222) triggers the fourth angle switch (334) when the first flange (321) is rotated from the third angle switch (333) to the first angle switch (331).

10. The three-way valve assembly of any one of claims 7-9,

one end of the rotating shaft (32) connected with the valve core (12) is provided with a convex abutting part, one surface of the valve core (12) connected with the rotating shaft (32) is provided with a convex groove, and the convex abutting part is matched with the convex groove;

the part of the rotating shaft (32) penetrating through the valve body (11) is sleeved with at least one third O-shaped ring (1303).

11. The three-way valve assembly of any one of claims 7-9,

the three-way valve assembly further comprises a water outlet assembly (20), the water outlet assembly (20) comprises a water outlet cover (21) and a connecting ring (22) fixed on the inner side of the water outlet cover (21), a water outlet nozzle (211) is arranged in the center of the water outlet cover (21), and the connecting ring (22) is used for realizing the sealing connection between the second opening (1112) of the valve body (11) and the water outlet nozzle (211);

the inner side wall of the water outlet nozzle (211) is provided with a flow guide block (213), and the flow guide blocks (213) are circumferentially arrayed by taking the central axis of the water outlet nozzle (211) as a central line;

the periphery of the water outlet cover (21) is provided with a buckling structure (212), and the buckling structure (212) is detachably connected with a shell of an external device.