Selector valve

Abstract

The utility model discloses a selector valve, belongs to the technical field of valve structures, and provides a selector valve capable of reducing the number of pipelines and making the configuration process easier, the selector valve comprises a bottom shell, a top shell and a valve element assembly, the bottom shell is fixedly connected with the top shell, the bottom surface of the bottom shell is provided with an input connecting end, and the top surface of the top shell is provided with at least two output connecting ends; the valve element assembly comprises a core disc which is located in a cavity formed between the bottom shell and the top shell, a coaxial annular groove is formed in the bottom face of the core disc, the core disc is communicated with the input connecting end, a vent hole communicated with the annular groove is formed in the bottom face of the core disc, only one output connecting end can be communicated at the same time, and a coaxial transmission shaft is further arranged on the bottom face of the core disc. The lower end of the transmission shaft penetrates through the bottom shell and is connected with a rotating handle. A plurality of output connecting ends are arranged on the selector valve, so that the selector valve on one input pipeline of the coupling can supply a fire extinguishing agent to a plurality of output pipelines, the number of pipelines is effectively reduced, and the configuration process of the selector valve is more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of valve structures, and in particular to a selection valve. Background Art

[0002] Selector valves are usually used to direct fire extinguishing agents to predetermined protection zones. There are many structural forms of existing selector valves, but most of them can only control the on-off of one pipeline. When there are multiple protection zones, multiple selector valves need to be set to control the pipelines connected to different protection zones. When the number of pipelines is relatively large, the input pipelines and output pipelines connected to the selector valve will be relatively large, and this configuration method is inconvenient. Summary of the invention

[0003] The object of the present application is to provide a selector valve that can reduce the number of pipelines and make the configuration process easier.

[0004] To achieve the above objectives, the present application provides a selection valve: comprising a bottom shell, a top shell and a valve core assembly, the bottom shell and the top shell are fixedly connected, the bottom surface of the bottom shell has an input connection end, and the top surface of the top shell has at least two output connection ends, the valve core assembly comprises a core disk, which is located in a cavity formed between the bottom shell and the top shell, the bottom surface of the core disk is provided with a coaxial annular groove, which is connected to the input connection end, the bottom surface of the core disk is provided with an air vent connected to the annular groove, and can only be connected to one of the output connection ends at the same time, the bottom surface of the core disk also has a coaxial transmission shaft, the lower end of the transmission shaft passes through the bottom shell and is connected to a handle, which is suitable for adjusting the angle of the air vent on the core disk relative to the top shell from the outer wall, thereby changing the opening and closing state of the selection valve, and allowing an input pipeline to connect different output pipelines, thereby reducing the number of input pipelines, making the pipeline structure more concise and the configuration more convenient.

[0005] As a preference, the turning handle includes a turning plate fixedly connected to the lower end of the transmission shaft, the side of the turning plate has an extension handle, the upper surface of the extension handle is provided with a positioning piece, the positioning piece includes an elastic sheet with a lower end fixedly connected to the extension handle, the upper surface of the upper end of the elastic sheet is fixedly connected to a top column; blind holes are provided on the bottom surface of the bottom shell, and the number of the blind holes corresponds to the number of output connection ends. When the top column is embedded in a blind hole, the vent will be connected and aligned with the output connection end corresponding to the blind hole. At this time, the selection valve is in a connected state, and the fire extinguishing agent can pass through the rotary valve.

[0006] As a preferred embodiment, two of the blind holes and the output connection ends are each provided, and a baffle is fixedly connected to the bottom surface of the bottom shell next to each of the blind holes, suitable for preventing the extension handle from continuing to rotate after the top column and the blind hole are matched; the input connection end is located between the two baffles, and the baffle can replace the input connection end to collide with the rotating extension handle, thereby protecting the input connection end.

[0007] As a preferred embodiment, the top of the top column is hemispherical, and the depth of the blind hole is less than or equal to the diameter of the hemispherical top of the top column; the elastic sheet is arranged at an angle, and the top of the top column is always in contact with the bottom shell; the surface of the turntable is provided with an indicator mark, pointing to the direction of the vent hole; the extension handle is connected to a handle through a swing shaft, and the rotation axis of the handle is perpendicular to the plane where the extension handle is located, so as to facilitate the staff to perform reversing operations.

[0008] Preferably, the bottom shell and the top shell are fixedly connected by a connecting piece, and the connecting piece includes a bolt and a nut. The bottom shell is provided with a lower connecting hole near the side, and the top shell is provided with an upper connecting hole near the side. The number and position of the upper connecting holes correspond to those of the lower connecting holes. The bolt passes through the upper connecting hole and the lower connecting hole and cooperates with the nut to be fixed by tightening.

[0009] As a preferred embodiment, an axial hole is provided in the center of the bottom of the bottom shell, suitable for the transmission shaft to pass through to form a rotating pair; a clearance hole is provided in the center of the inner top surface of the top shell, and a configuration groove is also provided on the top surface of the core disk, a sealing gasket is arranged in the configuration groove, and a through hole is provided in the center of the sealing gasket, and the upper end of the core disk also has a coaxial end shaft, which is suitable for passing through the through hole and cooperating with the clearance hole to form a rotating pair, thereby improving the stability of the rotation of the core disk.

[0010] Preferably, the configuration groove of the core disk also has a limiting edge located on the upper edge of the vent hole, and the sealing gasket also has a limiting hole passing through the upper and lower end surfaces, which is suitable for fitting with the limiting edge. The upper surface of the sealing gasket is not lower than the top surface of the core disk. The rubber sealing gasket has a more obvious thermal expansion and contraction effect, and thicker materials can effectively improve the sealing effect.

[0011] Preferably, a sealing cover is provided between the core disk and the bottom shell, and a sealing cover is also provided between the core disk and the top shell; the sealing cover comprises a radial sealing ring, the outer side surface of the radial sealing ring has an axial sealing ring, the end surface of the radial sealing ring facing away from the axial sealing ring is provided with a groove, suitable for engaging with the raised structure of the inner wall of the bottom shell or the top shell, the outer side of the axial sealing ring has a circumferential sealing edge away from the radial sealing ring, the end surfaces of the two circumferential sealing edges are fitted together, and the two sealing covers are symmetrical up and down, and a sealing cavity wrapping the core disk is formed inside the two.

[0012] As a preferred embodiment, the inner bottom surface of the bottom shell is provided with a sinking groove suitable for fitting with the radial sealing ring, and the inner wall of the sinking groove also has a first clamping block suitable for fitting with the groove; the bottom of the bottom shell has an injection channel connecting the input connection end and the internal cavity for the fire extinguishing agent to pass into the selection valve.

[0013] As a preferred embodiment, an upper groove is provided on the inner top surface of the top shell, which is suitable for fitting with the radial sealing ring, and the inner wall of the upper groove also has a second block, which is suitable for fitting with the groove; the top of the top shell has a discharge channel that independently connects each output connection end with the internal cavity, and the top surface of the top shell is also fixedly connected to a mounting plate and a flow meter, the number of the flow meters is the same as the number of the output connection ends, and each of the flow meters independently detects the flow rate of the fluid in one of the output connection ends, so that the operator can observe the connection status of the output pipeline requiring the fire extinguishing agent from the outside.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] (1) By providing multiple output connection ends on the selector valve, the selector valve on one input pipeline of the coupling can supply fire extinguishing agent to multiple output pipelines, effectively reducing the number of pipelines and making the configuration process of the selector valve more convenient;

[0016] (2) The design has a simple and compact structure, is easy to operate, and has a quick response, which reduces the number of selector valves used, thereby reducing the cost of use and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first stereoscopic schematic diagram of the overall structure of the selector valve.

[0018] Figure 2 It is a second stereoscopic schematic diagram of the overall structure of the selector valve.

[0019] Figure 3 This is a three-dimensional structural cross-sectional view of the sealing gasket of the selector valve installed on the valve core assembly.

[0020] Figure 4 This is a first schematic diagram of the three-dimensional structure of the valve core assembly of the selector valve.

[0021] Figure 5 This is a second schematic diagram of the three-dimensional structure of the valve core assembly of the selector valve.

[0022] Figure 6 A side view of the valve core assembly of the selector valve.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the sealing gasket of the selector valve.

[0024] Figure 8 It is a three-dimensional structural cross-sectional view of the lower sealing cover of the selector valve configured in the bottom shell.

[0025] Fig. 9 It is a first cross-sectional view of the three-dimensional structure of the bottom shell of the selector valve.

[0026] Fig.10 It is a second cross-sectional view of the three-dimensional structure of the bottom shell of the selector valve.

[0027] Fig.11 It is a three-dimensional structural cross-sectional view of the selector valve when the upper and lower sealing covers are in a tightly attached state.

[0028] Fig.12 This is a three-dimensional structural cross-sectional view of the upper sealing cover of the selector valve configured in the top shell.

[0029] Fig.13 It is a three-dimensional structural cross-sectional view of the top shell of the selector valve.

[0030] Fig.14 It is a schematic diagram of the three-dimensional structure of the top shell of the selector valve.

[0031] In the figure: 1, bottom shell; 101, shaft hole; 102, lower connection hole; 103, sinking groove; 104, first clamping block; 105, input connection end; 106, injection channel; 107, blind hole; 108, baffle; 2, top shell; 201, clearance hole; 202, upper connection hole; 203, upper sinking groove; 204, second clamping block; 205, discharge channel; 206, output connection end; 207, mounting plate; 208, flow meter; 3, sealing gasket; 301, through hole; 302, limit hole; 4, sealing cover; 401, diameter 402, axial sealing ring; 403, circumferential sealing edge; 404, slot; 5, valve core assembly; 510, core disk; 511, annular groove; 512, vent hole; 513, configuration groove; 514, limit edge; 515, transmission shaft; 516, end shaft; 520, turning handle; 521, turntable; 522, indicator mark; 523, extension handle; 524, swing shaft; 530, handle; 540, positioning piece; 541, elastic sheet; 542, top column; 6, connecting piece; 601, bolt; 602, nut. DETAILED DESCRIPTION

[0032] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0035] The terms "including" and "having" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0036] like Figure 1-14 The selection valve shown includes three main parts: a bottom shell 1, a top shell 2 and a valve core assembly 5. The bottom shell 1 is fixedly connected to the top shell 2. Normally, the bottom shell 1 and the top shell 2 are fixedly connected by a connecting member 6. The connecting member 6 includes a detachable bolt 601 and a nut 602. The bottom shell 1 is provided with a plurality of lower connecting holes 102 equidistantly arranged around the axis at a position near the side. The top shell 2 is also provided with a plurality of upper connecting holes 202 equidistantly arranged around the axis at a position near the side. The number and position of the upper connecting holes 202 correspond to those of the lower connecting holes 102. The bolt 601 passes through the aligned upper connecting holes 202 and the lower connecting holes 102 and then cooperates with the nut 602 to be fixed by tightening.

[0037] The bottom surface of the bottom shell 1 has an input connection end 105 for connecting to the fire extinguishing agent storage tank through a pipeline. The bottom of the bottom shell 1 has an injection channel 106 connecting the input connection end 105 with the internal cavity, and the fire extinguishing agent enters the interior of the selection valve through this. The top surface of the top shell 2 has at least two output connection ends 206 for connecting different fire extinguishing agent spraying ports through pipelines. The top of the top shell 2 has an exhaust channel 205 independently connecting each output connection end 206 with the internal cavity. The fire extinguishing agent finally leaves the selector valve through an exhaust channel 205. The selector valve, the valve core assembly 5 includes a flat core disc 510, which is located in a cavity formed between the bottom shell 1 and the top shell 2. The bottom shell 1 and the top shell 2 are both rotating bodies, coaxial with the core disc 510. A coaxial annular groove 511 is provided on the bottom surface of the core disc 510, which is always connected to the input connection end 105 through the injection channel 106. A vent hole 512 connected to the annular groove 511 is provided on the bottom surface of the core disc 510, and can only be connected to one output connection end 206 at the same time, so that the selector valve has the characteristic of selective connection.

[0038] A sealing cover 4 is provided between the core disk 510 and the bottom shell 1, and a sealing cover 4 is also provided between the core disk 510 and the top shell 2. The two sealing covers 4 have the same structure and are symmetrical up and down. The specific structure of the sealing cover 4 includes a sheet-like radial sealing ring 401, and the outer side of the radial sealing ring 401 has a cylindrical axial sealing ring 402. The end surface of the radial sealing ring 401 facing away from the axial sealing ring 402 is provided with a groove 404 for engaging with the convex structure of the inner wall of the bottom shell 1 or the top shell 2, so as to inhibit the entire sealing cover 4 from rotating relative to the shell structure. The outer side of the axial sealing ring 402 has a circumferential sealing edge 403 away from the radial sealing ring 401, and the circumferential sealing edge 403 is annular. The end surfaces of the two circumferential sealing edges 403 are attached and pressed tightly, so that the two sealing covers 4 are in a closed state. The sealing cover 4 has good sealing performance. It should also be noted that the radial sealing ring 401, the axial sealing ring 402 and the circumferential sealing edge 403 are integrally formed of rubber material. Therefore, the material of the entire sealing cover 4 is uniform and the structure is stable. A sinking groove 103 is provided on the inner bottom surface of the bottom shell 1 for fitting with the radial sealing ring 401. The inner wall of the sinking groove 103 also has a first clamping block 104, which is exactly engaged with the clamping groove 404. An upper sinking groove 203 is provided on the inner top surface of the top shell 2 for fitting with the radial sealing ring 401. The inner wall of the upper sinking groove 203 also has a second clamping block 204, which is exactly engaged with the clamping groove 404. There are usually several blocks and slots 404, and the several blocks and slots 404 are equidistantly arranged around the axis of the core disk 510.

[0039] The bottom surface of the core disk 510 also has a coaxial transmission shaft 515, and an axial hole 101 is opened in the center of the bottom of the bottom shell 1, through which the transmission shaft 515 can pass and form a rotating pair. The lower end of the transmission shaft 515 is connected to a handle 520 after passing through the bottom shell 1, which is used to adjust the angle of the vent hole 512 on the core disk 510 relative to the top shell 2 from the outer wall. The specific structure of the handle 520 includes a turntable 521 fixedly connected to the lower end of the transmission shaft 515, and an indicator mark 522 is provided on the surface of the turntable 521, pointing to the direction of the vent hole 512, so as to facilitate the judgment of which output connection terminal 206 the vent hole 512 is connected to. The side of the turntable 521 has an extension handle 523, and the end of the extension handle 523 away from the turntable 521 is rotatably connected to a handle 530 through a swing shaft 524, and the rotation axis of the handle 530 is perpendicular to the plane where the extension handle 523 is located. The swing shaft 524 and the handle 530 in the vertical direction are more convenient for the staff to reach out and operate.

[0040] A clearance hole 201 is also provided in the center of the inner top surface of the top shell 2, and a configuration groove 513 is provided on the top surface of the core disk 510, in which a sealing gasket 3 is configured, and a through hole 301 is provided in the center of the sealing gasket 3. The upper end of the core disk 510 also has a coaxial end shaft 516, which passes through the through hole 301 and cooperates with the clearance hole 201 to form a rotating pair. The configuration groove 513 of the core disk 510 also has a limiting edge 514 located on the upper edge of the vent hole 512, and the sealing gasket 3 is also provided with a limiting hole 302 that passes through the upper and lower end surfaces, which coincides with the limiting edge 514, thereby effectively inhibiting the compressed sealing gasket 3 from rotating relative to the core disk 510. The upper surface of the sealing gasket 3 is not lower than the top surface of the core disk 510. After being compressed and deformed, it can more fully fill the matching gap between the core disk 510 and the top shell 2.

[0041] The upper surface of the extension handle 523 is provided with a positioning member 540, which is used to provide a certain restraint effect on the extension handle 523 when the selector valve is in the open state. The positioning member 540 includes an elastic sheet 541 fixedly connected to the extension handle 523 at the lower end. The elastic sheet 541 is made of an elastic alloy material. The elastic sheet 541 is inclined and a top column 542 is fixedly connected to the upper surface of the upper end. Due to the elastic force of the elastic sheet 541, the top of the top column 542 is always in contact with the bottom shell 1; the bottom surface of the bottom shell 1 is also provided with a blind hole 107, and the blind hole 107 is fixed to the bottom surface of the bottom shell 1. The number of blind holes 107 corresponds to the number of output connection terminals 206. The top of the top column 542 is hemispherical. The depth of the blind hole 107 is less than or equal to the diameter of the hemispherical top of the top column 542, which facilitates the top column 542 to slide in or out of the blind hole 107. In order to further improve the smoothness of sliding in and out, the lower edge of the blind hole 107 is usually chamfered. When the top column 542 is embedded in a blind hole 107, the vent hole 512 is connected to and aligned with the output connection terminal 206 corresponding to the blind hole 107, and the selection valve is in an open state.

[0042] Generally, two blind holes 107 and output connection ends 206 are provided, and of course more blind holes 107 and output connection ends 206 may be provided. When two blind holes 107 are provided, a baffle 108 is fixedly connected to the bottom surface of the bottom shell 1 beside each blind hole 107, so as to prevent the extension handle 523 from continuing to rotate after the top column 542 is matched with the blind hole 107, so as to further improve the control accuracy and stability of the selector valve. The input connection end 105 is located between the two baffles 108, so that the extension handle 523 will not hit the input connection end when it moves. End 105, when the number of blind holes 107 is more than two, a baffle 108 will not be set next to each blind hole 107, and the top surface of the top shell 2 is also fixedly connected with a mounting plate 207 and a flow meter 208. The mounting plate 207 is used to fix the entire selection valve on the bracket structure. The number of flow meters 208 is the same as the number of output connection ends 206. Each flow meter 208 can independently detect the flow rate of the fluid in an output connection end 206, so as to directly observe whether the output connection end 206 is connected.

[0043] Working principle: After the selector valve is connected to the pipeline structure, in the initial state, the vent hole 512 which is always connected to the annular groove 511 is connected to the input connection end 105 only through the injection channel 106. When a fire occurs, the staff turns the handle 530 to rotate the handle 520. When a click is heard, it means that the top column 542 slides into the blind hole 107. At this time, the vent hole 512 is connected to one of the output connection ends 206, and the fire extinguishing agent can be supplied to the spray head of the desired fire extinguishing agent through the rotary valve. The operator can also observe the consumption rate of the fire extinguishing agent through the flow meter 208 on the valve body.

[0044] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A selector valve, characterized in that: The invention comprises a bottom shell (1), a top shell (2) and a valve core assembly (5), wherein the bottom shell (1) and the top shell (2) are fixedly connected, the bottom surface of the bottom shell (1) has an input connection end (105), the top surface of the top shell (2) has at least two output connection ends (206), and the valve core assembly (5) comprises a core disk (510) located in a cavity formed between the bottom shell (1) and the top shell (2), and the bottom surface of the core disk (510) is provided with a coaxial annular groove (511) which is connected to the input connection end. The core disk (510) is connected to the connecting end (105), the bottom surface of the core disk (510) is provided with a vent hole (512) connected to the annular groove (511), and can only be connected to one of the output connecting ends (206) at the same time, the bottom surface of the core disk (510) also has a coaxial transmission shaft (515), the lower end of the transmission shaft (515) passes through the bottom shell (1) and is connected to a handle (520), which is suitable for adjusting the angle of the vent hole (512) on the core disk (510) relative to the top shell (2) from the outer wall.

2. The selector valve according to claim 1, characterized in that: The rotating handle (520) comprises a rotating disk (521) fixedly connected to the lower end of the transmission shaft (515), the side of the rotating disk (521) is provided with an extension handle (523), the upper surface of the extension handle (523) is provided with a positioning member (540), the positioning member (540) comprises an elastic sheet (541) whose lower end is fixedly connected to the extension handle (523), and the upper surface of the upper end of the elastic sheet (541) is fixedly connected to a top column (542); the bottom surface of the bottom shell (1) is provided with blind holes (107), the number of the blind holes (107) corresponds to the number of the output connection terminals (206), and when the top column (542) is embedded in a blind hole (107), the vent hole (512) will be connected to and aligned with the output connection terminal (206) corresponding to the blind hole (107).

3. The selector valve according to claim 2, characterized in that: The blind holes (107) and the output connection ends (206) are both provided with two each, and a baffle (108) is fixedly connected to the bottom surface of the bottom shell (1) next to each blind hole (107), suitable for blocking the extension handle (523) from continuing to rotate after the top column (542) is matched with the blind hole (107); the input connection end (105) is located between the two baffles (108).

4. The selector valve according to claim 3, characterized in that: The top of the top column (542) is hemispherical, and the depth of the blind hole (107) is less than or equal to the diameter of the hemispherical top of the top column (542); the elastic sheet (541) is arranged at an angle, and the top of the top column (542) is always in contact with the bottom shell (1); an indicator mark (522) is arranged on the surface of the turntable (521), pointing to the direction where the vent hole (512) is located; the extension handle (523) is rotatably connected to a handle (530) via a swing shaft (524), and the rotation axis of the handle (530) is perpendicular to the plane where the extension handle (523) is located.

5. The selector valve according to claim 4, characterized in that: The bottom shell (1) and the top shell (2) are fixedly connected via a connecting piece (6), wherein the connecting piece (6) comprises a bolt (601) and a nut (602); the bottom shell (1) is provided with a lower connecting hole (102) at a position close to the side edge, and the top shell (2) is provided with an upper connecting hole (202) at a position close to the side edge; the number and position of the upper connecting holes (202) correspond to those of the lower connecting holes (102); and the bolt (601) is matched with the nut (602) after passing through the upper connecting hole (202) and the lower connecting hole (102).

6. The selector valve according to any one of claims 1 to 5, characterized in that: The bottom center of the bottom shell (1) is provided with an axial hole (101), which is suitable for the transmission shaft (515) to pass through to form a rotating pair; the inner top surface of the top shell (2) is provided with a clearance hole (201) in the center, and the top surface of the core disk (510) is also provided with a configuration groove (513), and a sealing gasket (3) is configured in the configuration groove (513), and a through hole (301) is provided in the center of the sealing gasket (3); the upper end of the core disk (510) is also provided with a coaxial end shaft (516), which is suitable for passing through the through hole (301) and cooperating with the clearance hole (201) to form a rotating pair.

7. The selector valve according to claim 6, characterized in that: The configuration groove (513) of the core disk (510) also has a limiting edge (514) located at the upper edge of the vent hole (512), and the sealing gasket (3) is also provided with a limiting hole (302) that passes through the upper and lower end surfaces and is suitable for fitting with the limiting edge (514), and the upper surface of the sealing gasket (3) is not lower than the top surface of the core disk (510).

8. The selector valve according to any one of claims 1 to 5, characterized in that: A sealing cover (4) is arranged between the core disk (510) and the bottom shell (1), and a sealing cover (4) is also arranged between the core disk (510) and the top shell (2); the sealing cover (4) comprises a radial sealing ring (401), the outer side surface of the radial sealing ring (401) has an axial sealing ring (402), the end surface of the radial sealing ring (401) facing away from the axial sealing ring (402) is provided with a groove (404) suitable for engaging with the protruding structure of the inner wall of the bottom shell (1) or the top shell (2), the outer side of the axial sealing ring (402) has a circumferential sealing edge (403) away from the radial sealing ring (401), the end surfaces of the two circumferential sealing edges (403) are in contact with each other, and the two sealing covers (4) are symmetrical up and down.

9. The selector valve according to claim 8, characterized in that: The inner bottom surface of the bottom shell (1) is provided with a sinking groove (103) suitable for fitting with the radial sealing ring (401); the inner wall of the sinking groove (103) also has a first clamping block (104) suitable for fitting with the clamping groove (404); the bottom of the bottom shell (1) has an injection channel (106) connecting the input connection end (105) and the internal cavity.

10. The selector valve according to claim 8, characterized in that: The inner top surface of the top shell (2) is provided with an upper groove (203) suitable for fitting with the radial sealing ring (401), and the inner wall of the upper groove (203) is also provided with a second clamping block (204) suitable for fitting with the clamping groove (404); the top of the top shell (2) is provided with a discharge channel (205) independently connecting each output connection end (206) with the internal cavity, and the top surface of the top shell (2) is also fixedly connected with a mounting plate (207) and a flow meter (208), the number of the flow meters (208) is the same as the number of the output connection ends (206), and each of the flow meters (208) independently detects the flow rate of the fluid in one of the output connection ends (206).

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