Multi-outlet liquid mixing valve and working method thereof

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to a valve, in particular to a multi-outlet liquid mixing valve and a working method thereof.According to the multi-outlet liquid mixing valve, when a first liquid outlet flow channel, a liquid inlet cavity and a liquid inlet flow channel are communicated through a valve element mechanism, a second liquid outlet flow channel and the liquid inlet flow channel are blocked; when the second liquid outlet flow channel, the liquid inlet cavity and the liquid inlet flow channel are communicated, the first liquid outlet flow channel and the liquid inlet flow channel are blocked, and when the second liquid outlet flow channel, the liquid inlet cavity and the liquid inlet flow channel are communicated through the valve element mechanism, the length of a liquid flowing path is increased; therefore, the length difference between the two liquid flowing paths is reduced in the liquid mixing process, and the same mixing effect is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of engineering elements, and particularly relates to a valve, in particular to a multi-outlet mixed liquid valve and a working method thereof. BACKGROUND

[0002] During the working process of a semiconductor device, various valves are needed to control the opening and closing of liquid conveying pipelines, so as to realize liquid conveying and mixed liquid functions. The more valves there are, the more complex the pipelines are, and the more space they occupy. For this reason, a combination valve with a single main inlet and multiple outlets is used in the related art to make the pipeline as simple as possible. However, for some installation limited scenarios, multiple outlets cannot maintain the same flow path distance from the main inlet, which leads to different mixed liquid effects due to the difference in the flow path of the mixed liquid in the valve cavity during the mixing process.

[0003] Therefore, due to the difference in the flow path length of different flow paths in the valve when the installation space is limited, the technical problem of different liquid mixing effects needs to be solved, and a multi-outlet mixed liquid valve and a working method thereof need to be designed.

[0004] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background of the present application, and therefore, the above description is not considered to constitute prior art information. SUMMARY

[0005] The present application at least provides a multi-outlet mixed liquid valve and a working method thereof.

[0006] In a first aspect, the present application provides a multi-outlet mixed liquid valve, comprising: a valve seat, a liquid inlet flow path is formed in the valve seat, and the liquid inlet flow path is in communication with a liquid inlet cavity formed in the valve seat; a first liquid outlet flow path and a second liquid outlet flow path are arranged in the valve seat, the first liquid outlet flow path is in communication with the top of the liquid inlet cavity, the second liquid outlet flow path is in communication with the bottom of the liquid inlet cavity, and the first liquid outlet flow path is longer than the second liquid outlet flow path; a valve core mechanism is arranged in the liquid inlet cavity, the valve core mechanism is adapted to block the liquid flow path between the second liquid outlet flow path and the liquid inlet flow path when the first liquid outlet flow path, the liquid inlet cavity and the liquid inlet flow path are in communication, and to block the liquid flow path between the first liquid outlet flow path and the liquid inlet flow path when the second liquid outlet flow path, the liquid inlet cavity and the liquid inlet flow path are in communication; the valve core mechanism increases the length of the liquid flow path when the second liquid outlet flow path, the liquid inlet cavity and the liquid inlet flow path are in communication.

[0007] In an optional embodiment, the valve core mechanism comprises a base; the base is arranged on the inner bottom surface of the liquid inlet cavity, and a through hole is vertically formed in the base; A piston block is arranged in the through hole, a plurality of strip-shaped grooves are vertically arranged on the side wall of the piston block, and a flow-out hole corresponding to the strip-shaped grooves is arranged on the bottom of the piston block and communicates with the corresponding strip-shaped grooves; The communication position of the second liquid outlet flow channel with the liquid inlet cavity is below the flow-out hole; The top of the piston block is provided with a ring body; A support ring is arranged in the liquid inlet cavity and above the piston block; When the ring body contacts the bottom surface of the support ring, part of the strip-shaped grooves protrudes from the top surface of the base, the liquid in the liquid inlet flow channel flows through the strip-shaped grooves and then flows into the second liquid outlet flow channel from the flow-out hole, and the length of the liquid flow path is increased by the strip-shaped grooves.

[0008] In an alternative embodiment, when the bottom surface of the ring body contacts the top surface of the base, the second liquid outlet flow channel is blocked from the liquid inlet flow channel, at this time, the support ring is opened, and the first liquid outlet flow channel, the liquid inlet cavity and the liquid inlet flow channel are communicated; When the top surface of the ring body contacts the support ring, the support ring is closed, the first liquid outlet flow channel is blocked from the liquid inlet flow channel, part of the strip-shaped grooves protrudes from the top surface of the base, and the second liquid outlet flow channel, the liquid inlet cavity and the liquid inlet flow channel are communicated.

[0009] In an alternative embodiment, a push plate with a size matching the opening of the strip-shaped groove is arranged in the strip-shaped groove, and the push plate and the inner wall of the strip-shaped groove are connected by a plurality of first springs; When part of the strip-shaped grooves protrudes from the top surface of the base, the flowing liquid pushes the push plate to retract into the strip-shaped groove, so that the flow-out hole is exposed, the liquid enters the second liquid outlet flow channel after passing through the strip-shaped groove and the flow-out hole, and the push plate resets to push the liquid in the strip-shaped groove out after the strip-shaped groove is completely retracted into the base.

[0010] In an alternative embodiment, an opening and closing mechanism is arranged in the valve seat, the opening and closing mechanism is connected with the piston block, and the opening and closing mechanism is adapted to drive the piston block to move up and down; The opening and closing mechanism comprises a valve rod; The bottom end of the valve rod is connected with the top end of the piston block; A diaphragm is arranged on the valve rod and covers the opening position on the top of the liquid inlet cavity; The valve rod is arranged in the valve seat, and the valve rod and the inner top surface of the valve seat are connected by a second spring; A partition ring is sleeved on the valve rod, the partition ring contacts the inner wall of the valve seat, so that an upper chamber is formed above the partition ring and a lower chamber is formed below the partition ring.

[0011] In an alternative embodiment, an air port is arranged on the side wall of the valve seat and communicates with the lower chamber.

[0012] In an alternative embodiment, a pair of shunt channels are formed in the valve seat, and each of the shunt channels communicates with the liquid inlet channel. The side wall of the valve seat is provided with a shunt inlet corresponding to the shunt channel.

[0013] In an alternative embodiment, the side wall of the valve seat is provided with a liquid inlet corresponding to the liquid inlet channel. The side wall of the valve seat is provided with a first liquid outlet corresponding to the first liquid outlet channel, and a second liquid outlet corresponding to the second liquid outlet channel.

[0014] In an alternative embodiment, a check mechanism is arranged in the first liquid outlet.

[0015] In a second aspect, the embodiments of the present disclosure further provide a working method of the multi-outlet mixed liquid valve, comprising: The valve core mechanism blocks the second liquid outlet channel and the liquid inlet channel when the first liquid outlet channel, the liquid inlet cavity and the liquid inlet channel are communicated, and blocks the first liquid outlet channel and the liquid inlet channel when the second liquid outlet channel, the liquid inlet cavity and the liquid inlet channel are communicated. The valve core mechanism increases the length of the liquid flow path when the second liquid outlet channel, the liquid inlet cavity and the liquid inlet channel are communicated.

[0016] The multi-outlet mixed liquid valve blocks the second liquid outlet channel and the liquid inlet channel when the first liquid outlet channel, the liquid inlet cavity and the liquid inlet channel are communicated, and blocks the first liquid outlet channel and the liquid inlet channel when the second liquid outlet channel, the liquid inlet cavity and the liquid inlet channel are communicated, and increases the length of the liquid flow path when the second liquid outlet channel, the liquid inlet cavity and the liquid inlet channel are communicated, thereby reducing the length difference between the two liquid flow paths during the mixing of the liquid, and ensuring the same mixing effect.

[0017] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 A structural schematic diagram of a multi-outlet mixed liquid valve provided by the embodiment of the present application is shown in the figure. Figure 2 A sectional view of a multi-outlet mixed liquid valve provided by the embodiment of the present application is shown in the figure. Figure 3 A structural schematic diagram of a strip-shaped groove provided by the embodiment of the present application is shown in the figure. Figure 4 A structural schematic diagram of a piston block provided by the embodiment of the present application is shown in the figure. Figure 5 A structural schematic diagram of a push plate provided by the embodiment of the present application is shown in the figure.

[0021] In the figure: 1 valve seat, 11 liquid inlet, 111 liquid inlet channel, 112 liquid inlet cavity, 12 first liquid outlet, 121 first liquid outlet channel, 13 second liquid outlet, 131 second liquid outlet channel, 14 support ring, 15 upper cavity, 16 lower cavity, 17 inlet, 171 flow channel; 2 valve core mechanism, 21 base, 22 through hole, 23 piston block, 24 strip-shaped groove, 25 outflow hole, 26 ring body, 27 push plate, 28 first spring; 3 opening and closing mechanism, 31 valve rod, 32 diaphragm, 33 partition ring, 34 second spring, 35 air port; 4 check mechanism. Specific embodiments

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0023] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0024] Semiconductor equipment requires various valves to control the opening and closing of fluid delivery lines during operation, enabling functions such as liquid transport and mixing. The more valves there are, the more complex the piping becomes, and the larger the space required. To address this, related technologies employ combination valves with a single main inlet and multiple outlets to simplify the piping as much as possible. However, in some installation-constrained scenarios, multiple outlets cannot maintain the same flow path distance from the main inlet. This leads to differences in the flow paths of the mixed liquids within the valve chambers during mixing, resulting in inconsistent mixing effects.

[0025] Furthermore, if a slot is created in the valve core mechanism to increase the length of the shorter flow path, if only the slot is added, liquid will remain in the valve core mechanism when the installation angle of the multi-outlet mixing valve changes.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] like Figure 1 and Figure 2As shown, at least one disclosed embodiment provides a multi-outlet mixing valve, comprising: a valve seat 1, wherein an inlet channel 111 is provided in the valve seat 1, the inlet channel 111 communicating with an inlet chamber 112 provided in the valve seat 1; a first outlet channel 121 and a second outlet channel 131 are provided in the valve seat 1, the first outlet channel 121 communicating with the top of the inlet chamber 112, the second outlet channel 131 communicating with the bottom of the inlet chamber 112, and the first outlet channel 121 being longer than the second outlet channel 131; a valve core mechanism 2 is provided in the inlet chamber 112, the valve core mechanism... 2 is adapted to block the second liquid outlet channel 131 from the liquid inlet channel 111 when the first liquid outlet channel 121, the liquid inlet chamber 112, and the liquid inlet channel 111 are connected, and to block the first liquid outlet channel 121 from the liquid inlet channel 111 when the second liquid outlet channel 131, the liquid inlet chamber 112, and the liquid inlet channel 111 are connected; the valve core mechanism 2 increases the length of the liquid flow path when the second liquid outlet channel 131, the liquid inlet chamber 112, and the liquid inlet channel 111 are connected, thereby reducing the length difference between the two liquid flow paths during the mixing process and ensuring the same mixing effect.

[0029] In this embodiment, the inlet 11 can introduce one liquid into the valve, and the outlet 17 can introduce another liquid into the valve. The two liquids can mix during the flow process in the valve and then flow out from the first outlet 12 or the second outlet 13. After each mixing of liquids, only one outlet will flow out, while the other outlet will be closed.

[0030] In this embodiment, when the mixed liquid flows out from the first outlet 12, the liquid flows through the inlet channel 111, the inlet chamber 112, and the first outlet channel 121. When the mixed liquid flows out from the second outlet 13, the liquid flows through the inlet channel 111, the inlet chamber 112, the strip groove 24, and the second outlet channel 131. When the liquid flows out from the second outlet 13, the length of the liquid flow path is increased by the strip groove 24 to ensure the mixing effect when the liquid flows out from the second outlet 13.

[0031] like Figure 2 and Figure 3As shown, in an optional embodiment, the valve core mechanism 2 includes: a base 21; the base 21 is disposed on the inner bottom surface of the liquid inlet chamber 112, and a through hole 22 is vertically formed in the base 21; a piston block 23 passes through the through hole 22, and a plurality of strip grooves 24 are vertically formed on the side wall of the piston block 23, and an outlet hole 25 corresponding to the strip grooves 24 is formed at the bottom of the piston block 23, and the outlet hole 25 communicates with the corresponding strip groove 24; the second liquid outlet channel 131 The connection point with the liquid inlet chamber 112 is located below the outlet hole 25; a ring body 26 is provided on the top of the piston block 23; a support ring 14 is provided inside the liquid inlet chamber 112, and the support ring 14 is located above the piston block 23; when the ring body 26 contacts the bottom surface of the support ring 14, part of the strip groove 24 extends from the top surface of the base 21, and the liquid in the liquid inlet channel 111 flows through the strip groove 24 and then flows into the second liquid outlet channel 131 from the outlet hole 25, thereby increasing the length of the liquid flow path through the strip groove 24.

[0032] In this embodiment, the outer wall of the piston block 23 contacts the inner wall of the through hole 22 to prevent liquid from flowing through the gap between the piston block 23 and the through hole 22.

[0033] In this embodiment, when the bottom surface of the ring 26 contacts the top surface of the base 21, the strip groove 24 is completely blocked by the base 21. At this time, the second liquid outlet channel 131 is blocked, the second liquid outlet 13 is closed, and the liquid can only flow out through the first liquid outlet 12. When the piston block 23 moves upward so that the top surface of the ring 26 contacts the support ring 14, the circular hole in the center of the support ring 14 is blocked. At this time, the first liquid outlet 12 is blocked and closed, and part of the strip groove 24 extends out from the top surface of the through hole 22, that is, from the top surface of the base 21. The liquid can flow out from the outlet hole 25 after passing through the strip groove 24. The liquid flows into the second liquid outlet channel 131 and flows out from the second liquid outlet 13. The strip groove 24 increases the path length of the liquid when it flows out from the second liquid outlet 13, ensuring the mixing effect of the liquid.

[0034] In one alternative embodiment, when the bottom surface of the ring 26 contacts the top surface of the base 21, the second liquid outlet channel 131 and the liquid inlet channel 111 are blocked. At this time, the support ring 14 is opened, and the first liquid outlet channel 121, the liquid inlet chamber 112, and the liquid inlet channel 111 are connected. When the top surface of the ring 26 contacts the support ring 14, the support ring 14 is closed, the first liquid outlet channel 121 and the liquid inlet channel 111 are blocked, a portion of the strip groove 24 extends from the top surface of the base 21, and the second liquid outlet channel 131, the liquid inlet chamber 112, and the liquid inlet channel 111 are connected.

[0035] like Figure 4 and Figure 5As shown, in one optional embodiment, a push plate 27 adapted to the opening size of the strip groove 24 is provided inside the strip groove 24. The push plate 27 is connected to the inner wall of the strip groove 24 by a plurality of first springs 28. When a part of the strip groove 24 extends out from the top surface of the base 21, the flowing liquid pushes the push plate 27 to retract into the strip groove 24, so that the outlet hole 25 is exposed. After the liquid passes through the strip groove 24 and the outlet hole 25, it enters the second liquid outlet channel 131. After the strip groove 24 is completely retracted into the base 21, the push plate 27 resets and pushes the liquid out of the strip groove 24.

[0036] In this embodiment, the thickness of the push plate 27 is less than the thickness of the strip groove 24. Initially, the bottom surface of the ring 26 is in contact with the top surface of the base 21, the strip groove 24 is completely covered by the base 21, the push plate 27 is located at the open position of the strip groove 24, and one side of the push plate 27 is aligned with the outer wall of the piston block 23. When the piston block 23 moves upward, the top surface of the ring 26 contacts the bottom surface of the support ring 14. At this time, the push plate 27 moves upward to extend from the top surface of the base 21, and the liquid in the liquid inlet channel 111 flows into the liquid inlet chamber 112. The push plate 27 is squeezed, causing it to retract and move into the strip groove 24, exposing the outlet hole 25. The liquid can then flow out through the outlet hole 25 after passing through the strip groove 24. The liquid flows into the second liquid outlet channel 131 and out through the second liquid outlet 13. When the piston block 23 moves downward so that the bottom surface of the ring body 26 contacts the top surface of the base 21, the liquid can no longer squeeze the push plate 27. At this time, the first spring 28 drives the push plate 27 to reset, pushing out all the liquid in the strip groove 24 to prevent liquid from remaining in the strip groove 24.

[0037] In this embodiment, under normal installation conditions, the piston block 23 of the multi-outlet mixing valve is in a vertical position. If the piston block 23 is in a horizontal position after the multi-outlet mixing valve is installed, when the second outlet 13 is opened and then closed, the liquid in the strip groove 24 can be pushed out by the push plate 27 to avoid liquid residue in the strip groove 24.

[0038] like Figure 2 As shown, in an optional embodiment, the valve seat 1 is provided with an opening and closing mechanism 3, which is connected to the piston block 23. The opening and closing mechanism 3 is adapted to drive the piston block 23 to move up and down. The opening and closing mechanism 3 includes: a valve stem 31; the bottom end of the valve stem 31 is connected to the top end of the piston block 23; a diaphragm 32 is provided on the valve stem 31, which covers the open position at the top of the liquid inlet chamber 112; the valve stem 31 passes through the valve seat 1, and the valve stem 31 is connected to the inner top surface of the valve seat 1 by a second spring 34; a partition ring 33 is sleeved on the valve stem 31, and the partition ring 33 contacts the inner wall of the valve seat 1 so that an upper chamber 15 is formed above the partition ring 33 and a lower chamber 16 is formed below the partition ring 33.

[0039] In this embodiment, the top end of the valve stem 31 may have a groove for accommodating a portion of the second spring 34. The groove is connected to the upper chamber 15 to increase the volume of the upper chamber 15.

[0040] In this embodiment, after the valve stem 31 passes through the support ring 14 and connects to the piston block 23, there is a gap between the valve stem 31 and the inner wall of the central circular hole of the support ring 14, which facilitates the flow of liquid.

[0041] like Figure 1 As shown, in one optional embodiment, an air port 35 is provided on the side wall of the valve seat 1, and the air port 35 is connected to the lower chamber 16.

[0042] In this embodiment, gas is introduced into the lower chamber 16 through the gas port 35 connected to the gas source, which increases the gas pressure in the lower chamber 16, causing the partition ring 33 to move upward and driving the piston block 23 to move upward.

[0043] like Figure 2 As shown, in one optional embodiment, a pair of flow dividers 171 are provided in the valve seat 1, and the flow dividers 171 are both connected to the liquid inlet flow channel 111; the side wall of the valve seat 1 is provided with a branch inlet 17 corresponding to the flow dividers 171.

[0044] In this embodiment, the liquid to be mixed can be introduced into the liquid inlet channel 111 through the diversion channel 171.

[0045] like Figure 1 As shown, in one optional embodiment, the valve seat 1 has an inlet 11 corresponding to the inlet channel 111 on its side wall; the valve seat 1 has a first outlet 12 corresponding to the first outlet channel 121 and a second outlet 13 corresponding to the second outlet channel 131 on its side wall.

[0046] In one optional embodiment, a check valve 4 is provided inside the first outlet 12.

[0047] In this embodiment, the check valve 4 can prevent liquid from flowing from the first outlet 12 into the first outlet channel 121.

[0048] At least one other disclosed embodiment also provides a method of operating the multi-outlet mixing valve described above, comprising: blocking the second outlet channel 131 from the inlet channel 111 when the first outlet channel 121, the inlet chamber 112, and the inlet channel 111 are connected by the valve core mechanism 2; and blocking the first outlet channel 121 from the inlet channel 111 when the second outlet channel 131, the inlet chamber 112, and the inlet channel 111 are connected by the valve core mechanism 2; and increasing the length of the liquid flow path when the second outlet channel 131, the inlet chamber 112, and the inlet channel 111 are connected by the valve core mechanism 2.

[0049] In summary, this multi-outlet mixing valve, through the valve core mechanism 2, blocks the second outlet channel 131 from the inlet channel 111 when the first outlet channel 121, inlet chamber 112, and inlet channel 111 are connected, and also blocks the first outlet channel 121 from the inlet channel 111 when the second outlet channel 131, inlet chamber 112, and inlet channel 111 are connected. By increasing the length of the liquid flow path when the second outlet channel 131, inlet chamber 112, and inlet channel 111 are connected, the valve core mechanism 2 reduces the length difference between the two liquid flow paths during the mixing process, ensuring the same mixing effect.

[0050] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0051] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0052] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0053] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multiple outlet fluid mixing valve, characterized by, The application relates to a multi-outlet mixed liquid valve. The valve seat (1) is internally provided with an inlet flow channel (111) and an inlet cavity (112) in communication with the inlet flow channel (111); The valve seat (1) is internally provided with a first outlet flow channel (121) and a second outlet flow channel (131), the first outlet flow channel (121) is in communication with the top of the inlet cavity (112), the second outlet flow channel (131) is in communication with the bottom of the inlet cavity (112), and the first outlet flow channel (121) is longer than the second outlet flow channel (131); The inlet cavity (112) is internally provided with a valve core mechanism (2), the valve core mechanism (2) is adapted to block the second outlet flow channel (131) and the inlet flow channel (111) when the first outlet flow channel (121), the inlet cavity (112) and the inlet flow channel (111) are in communication, and to block the first outlet flow channel (121) and the inlet flow channel (111) when the second outlet flow channel (131), the inlet cavity (112) and the inlet flow channel (111) are in communication; The valve core mechanism (2) increases the length of the liquid flow path when the second outlet flow channel (131), the inlet cavity (112) and the inlet flow channel (111) are in communication.

2. The multi-outlet mixed liquid valve according to claim 1, wherein The valve core mechanism (2) comprises a base (21); The base (21) is arranged on the inner bottom surface of the inlet cavity (112), and a through hole (22) is vertically arranged in the base (21); A piston block (23) is arranged in the through hole (22), a plurality of strip-shaped grooves (24) are vertically arranged on the side wall of the piston block (23), and a flow-out hole (25) corresponding to the strip-shaped grooves (24) is arranged on the bottom of the piston block (23) and in communication with the corresponding strip-shaped grooves (24); The communication position of the second outlet flow channel (131) and the inlet cavity (112) is below the flow-out hole (25); A ring body (26) is arranged on the top of the piston block (23); A supporting ring (14) is arranged in the inlet cavity (112) and above the piston block (23); When the ring body (26) contacts the bottom surface of the supporting ring (14), part of the strip-shaped grooves (24) extends from the top surface of the base (21), liquid in the inlet flow channel (111) flows through the strip-shaped grooves (24) and then flows into the second outlet flow channel (131) from the flow-out hole (25), and the length of the liquid flow path is increased through the strip-shaped grooves (24).

3. The multi-outlet mixed liquid valve according to claim 2, wherein When the bottom surface of the ring body (26) contacts the top surface of the base (21), the second outlet flow channel (131) and the inlet flow channel (111) are blocked, at this time, the supporting ring (14) is opened, and the first outlet flow channel (121), the inlet cavity (112) and the inlet flow channel (111) are in communication. When the top surface of the ring body (26) contacts the support ring (14), the support ring (14) is closed, the first liquid outlet channel (121) is blocked from the liquid inlet channel (111), and part of the strip-shaped groove (24) protrudes from the top surface of the base (21), and the second liquid outlet channel (131), the liquid inlet cavity (112) and the liquid inlet channel (111) are communicated.

4. The multi-outlet mixing valve of claim 2, wherein, A push plate (27) is arranged in the strip-shaped groove (24) and is matched with the opening size of the strip-shaped groove (24), and the push plate (27) is connected with the inner wall of the strip-shaped groove (24) through a plurality of first springs (28); When part of the strip-shaped groove (24) protrudes from the top surface of the base (21), the flowing liquid pushes the push plate (27) to retract into the strip-shaped groove (24), so that the flow hole (25) is exposed, and the liquid enters the second liquid outlet channel (131) through the strip-shaped groove (24) and the flow hole (25), and after the strip-shaped groove (24) is completely retracted into the base (21), the push plate (27) resets to push the liquid in the strip-shaped groove (24) out.

5. The multi-outlet mixing valve of claim 2, wherein, An opening and closing mechanism (3) is arranged in the valve seat (1), the opening and closing mechanism (3) is connected with the piston block (23), and the opening and closing mechanism (3) is adapted to drive the piston block (23) to move up and down; The opening and closing mechanism (3) comprises a valve rod (31); The bottom end of the valve rod (31) is connected with the top end of the piston block (23); A diaphragm (32) is arranged on the valve rod (31) and covers the opening position of the top of the liquid inlet cavity (112); The valve rod (31) is arranged in the valve seat (1), and the valve rod (31) is connected with the inner top surface of the valve seat (1) through a second spring (34); A separation ring (33) is sleeved on the valve rod (31), the separation ring (33) is in contact with the inner wall of the valve seat (1), so that an upper chamber (15) is formed above the separation ring (33), and a lower chamber (16) is formed below the separation ring (33).

6. The multi-outlet mixing valve of claim 5, wherein, An air port (35) is arranged on the side wall of the valve seat (1) and is communicated with the lower chamber (16).

7. The multi-outlet mixing valve of claim 1, wherein, A pair of shunt channels (171) are arranged in the valve seat (1) and are communicated with the liquid inlet channel (111); A shunt inlet (17) corresponding to the shunt channel (171) is arranged on the side wall of the valve seat (1).

8. The multi-outlet mixing valve of claim 1, wherein, A liquid inlet (11) corresponding to the liquid inlet channel (111) is arranged on the side wall of the valve seat (1); A first liquid outlet (12) corresponding to the first liquid outlet channel (121) and a second liquid outlet (13) corresponding to the second liquid outlet channel (131) are arranged on the side wall of the valve seat (1).

9. The multi-outlet mixing valve of claim 8, wherein, The first liquid outlet (12) is provided with a check mechanism (4).

10. A method of operating a multiple outlet mixing valve as claimed in claim 1, characterised by, The method comprises the steps that: By the valve core mechanism (2), when the first liquid outlet flow channel (121), the liquid inlet cavity (112) and the liquid inlet flow channel (111) are communicated, the second liquid outlet flow channel (131) and the liquid inlet flow channel (111) are blocked, and when the second liquid outlet flow channel (131), the liquid inlet cavity (112) and the liquid inlet flow channel (111) are communicated, the first liquid outlet flow channel (121) and the liquid inlet flow channel (111) are blocked. By the valve core mechanism (2), when the second liquid outlet flow channel (131), the liquid inlet cavity (112) and the liquid inlet flow channel (111) are communicated, the length of the liquid flow path is increased.

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