A multi-position selector valve

Abstract

The application relates to the field of fluid transportation and control, in particular to a multi-position selection valve, which comprises a stator and a rotor arranged coaxially and superimposed, the rotor can move circumferentially around the middle shaft, the stator is provided with an inlet hole at the position of the middle shaft and an outlet hole close to the position of the outer ring edge, and a plurality of end holes are arranged around the inlet hole between the inlet hole and the outlet hole, the end holes are paired, one pair of the end holes is a pair of cleaning path interfaces; a liquid flow groove is arranged on the end surface of the rotor in contact with the stator, the liquid flow groove is in communication with the inlet hole and is not through; in at least one relative position state of the stator and the rotor, the first end of the liquid flow groove is in communication with one cleaning path interface, and the second end of the liquid flow groove is in communication with the outlet hole; the new flow path design provided by the application can control the selective forward / reverse passing of fluid through different external components, there is no flushing dead zone when cleaning the public flow path part in the multi-position selection valve, and complete and efficient cleaning of the multi-position selection valve can be realized.

Description

Technical Field

[0001] This application relates to the field of fluid transport and control, and in particular to a multi-position selection valve for selecting any one of a plurality of inlet / outlet groups. Background Technology

[0002] Valves are frequently used components in fluid transport. For example, a position selection valve is often used when transporting fluid through different fluid circuit components.

[0003] Currently, selector valves generally include a stator and a rotor. The stator has an inlet and an outlet, and the rotor has an arc-shaped guide groove. The guide groove connects the inlet and the outlet. When transporting fluid, the fluid is injected into the guide groove through the inlet, and then the fluid flows out through the outlet. After the fluid is transported, some fluid will remain in the guide groove. At this time, cleaning fluid is flushed into the inlet. The cleaning fluid flows through the guide groove and the outlet in sequence, thereby flushing out the residual fluid and achieving complete cleaning of the guide groove.

[0004] In the process of developing this application, it was found that the above-mentioned technology has at least the following problems: the liquid guiding tank in the prior art mainly focuses on fluid transportation, and the liquid outlet is generally not connected to the end of the arc-shaped liquid guiding tank, but to the middle section of the liquid guiding tank. This results in a rinsing dead zone between the connection point of the liquid guiding tank and the liquid outlet and its end position. Thus, when cleaning the liquid guiding tank, most of the cleaning liquid flows along the liquid guiding tank to the liquid outlet position and is discharged. The cleaning liquid cannot flow through the entire liquid guiding tank, making it difficult to achieve complete and efficient cleaning of the liquid guiding tank. Summary of the Invention

[0005] To facilitate complete and efficient cleaning of the interior of a multi-position selector valve, this application provides a multi-position selector valve.

[0006] The multi-position selector valve provided in this application adopts the following technical solution:

[0007] A multi-position selector valve includes a stator and a rotor coaxially stacked. The rotor can rotate circumferentially around its central axis. The stator has an inlet hole at the central axis position and an outlet hole near the outer edge. Between the inlet hole and the outlet hole, there are several end holes surrounding the inlet hole. These end holes are paired, with one pair serving as a cleaning path interface. A liquid flow groove communicating with the inlet hole is formed on the end face of the rotor that contacts the stator. The liquid flow groove contains only one non-through-flow liquid channel. In at least one relative position of the stator and the rotor, the first end of the liquid flow groove communicates with one of the cleaning path interfaces, and the second end of the liquid flow groove communicates with the outlet hole.

[0008] By adopting the above technical solution, after the fluid is transported through the multi-position selector valve, the rotor is driven to rotate, thereby connecting the first end of the liquid flow channel to a cleaning channel interface and the second end to the liquid outlet. Then, cleaning fluid is flushed into the inlet hole, and the cleaning fluid is further flushed into the liquid flow channel from the first end of the liquid flow channel. Then, it is flushed out from the second end of the liquid flow channel and the liquid outlet in sequence. Since the liquid outlet is connected to the second end of the liquid flow channel at this time, there will be no rinsing dead zone as in the prior art, so as to achieve the effect of flushing to the end, so as to realize complete and efficient cleaning of the inside of the multi-position selector valve.

[0009] In one specific implementation, all the end holes are arranged at equal distances and angles with the central axis of the stator as the center.

[0010] By adopting the above technical solution, the end holes can be evenly distributed around the liquid inlet hole, which makes it easier for the rotor to pass through the liquid flow channel in a rotating manner to connect the liquid inlet hole and the end hole.

[0011] In one specific implementation, a connecting groove is provided radially on the rotor, one end of the connecting groove is connected to the first end of the liquid flow groove, and the other end of the connecting groove is used to selectively connect to any of the end holes.

[0012] By adopting the above technical solution, the circle where the liquid flow channel is located does not coincide with the circle where several end holes are located, and the connection groove facilitates the connection between the liquid flow channel and the end holes.

[0013] In one specific implementation scheme, a selection groove for connecting the liquid inlet hole and a plurality of the end holes is provided on the end face of the rotor that contacts the stator.

[0014] By adopting the above technical solution, the rotor can be driven to rotate, which facilitates the connection between the liquid inlet hole and the end hole on the stator through the selection slot on the rotor.

[0015] In one specific implementation scheme, each pair of end holes is symmetrically arranged with the central axis of the liquid inlet hole as the center; the length direction of the selection groove and the connecting groove are consistent with the straight line direction passing through a set of end holes.

[0016] By adopting the above technical solution, it is convenient to connect the first end of the liquid flow tank to a cleaning path interface, while also connecting the liquid flow tank to another cleaning path interface of the connecting tank, and connecting the second end of the liquid flow tank to the liquid outlet, so as to achieve the effect of rinsing to the bottom during cleaning.

[0017] In one specific implementation, the length direction of the selection groove is arranged radially along the rotor, one end of the selection groove is directly opposite the liquid inlet hole, and the other end of the selection groove is directly opposite one of the end holes.

[0018] By adopting the above technical solution, it is easy to prevent fluid from remaining in the selection tank, thereby avoiding cross-contamination between different fluids transported before and after.

[0019] In one specific implementation, the connection between each pair of end holes passes through the center of the stator.

[0020] By adopting the above technical solution, it is convenient to select a certain end hole by selecting a slot, so that the connecting slot can be connected to another end hole in the same group as that end hole.

[0021] In one specific implementation, a cleaning pipeline is connected between a pair of cleaning interface ports, and external components are connected between each of the other pairs of end ports; the cleaning pipeline and the external components are bidirectionally connected.

[0022] By adopting the above technical solution, fluid processing can be achieved from both directions of the external component, improving the flexibility of fluid flow direction selection.

[0023] In one specific implementation, the external component includes a first connecting tube connected to one of the pair of end holes and a second connecting tube connected to the other end hole, the first connecting tube and the second connecting tube being connected together by an external component.

[0024] By adopting the above technical solution, the fluid flowing out of the multi-position selector valve can be easily processed through external components.

[0025] In one specific implementation, the rotor is connected to a motor, and the rotor is coaxially connected to the output shaft of the motor.

[0026] By adopting the above technical solution, the rotor can be rotated by a motor.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Facilitates complete and efficient cleaning of the interior of multi-position selector valves;

[0029] 2. Fluid can selectively pass through different external components;

[0030] 3. Fluid can flow in reverse through each external component. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the stator structure in an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the rotor structure in an embodiment of this application.

[0033] Figure 3 This is a connection diagram illustrating the first connected state in an embodiment of this application.

[0034] Figure 4 This is a connection diagram illustrating a second connected state in an embodiment of this application.

[0035] Figure 5 This is a connection diagram illustrating a third connected state in an embodiment of this application.

[0036] Figure 6 This is a connection diagram illustrating the fourth connected state in an embodiment of this application.

[0037] Figure 7 This is a connection diagram illustrating the fifth connected state in an embodiment of this application.

[0038] Figure 8 This is a connection diagram illustrating the sixth connected state in an embodiment of this application.

[0039] Figure 9 This is a connection diagram illustrating the seventh connected state in an embodiment of this application.

[0040] Figure 10 This is a connection diagram illustrating the eighth connected state in an embodiment of this application.

[0041] Figure 11 This is a connection diagram illustrating the ninth connected state in an embodiment of this application.

[0042] Figure 12 This is a connection diagram illustrating the tenth connected state in an embodiment of this application.

[0043] Figure 13 This is a connection diagram illustrating the eleventh connected state in an embodiment of this application.

[0044] Figure 14 This is a connection diagram illustrating the twelfth connected state in an embodiment of this application.

[0045] Explanation of reference numerals in the attached drawings: 1. Stator; 11. Liquid inlet; 12. End hole; 121. First external connection interface; 122. Second external connection interface; 123. Third external connection interface; 124. Fourth external connection interface; 125. Fifth external connection interface; 126. Sixth external connection interface; 127. Seventh external connection interface; 128. Eighth external connection interface; 129. Ninth external connection interface; 1210. Tenth external connection interface; 1211. First cleaning path interface; 1212. Second cleaning path interface; 13. Liquid outlet; 2. Rotor; 21. Selector slot; 22. Liquid flow slot; 23. Connecting slot; 3. Cleaning pipeline; 4. External component; 41. First external component; 42. Second external component; 43. Third external component; 44. Fourth external component; 45. Fifth external component; 5. Liquid outlet pipe. Detailed Implementation

[0046] The present application will be further described in detail below with reference to Annexes 1-14.

[0047] This application discloses a multi-position selector valve, referring to... Figure 1 Multi-position selector valves include a motor ( Figure 1 (Not shown in the image) The motor has a stator 1 fixed on it, combined with... Figure 2 A rotor 2, coaxially and stacked with the stator 1, is fixed on the output shaft of the motor. Driven by the motor, the rotor 2 can complete circumferential motion around its central axis. A preset fluid can be injected into the stator 1, and the fluid can flow between the stator 1 and the rotor 2. (Refer to...) Figure 3 The stator 1 is connected to a cleaning pipe 3 through which the cleaning fluid flows and five external components 4 through which the fluid flows. The external components 4 are used to process the fluid flowing through them to achieve a certain preset purpose. The cleaning pipe 3 is used for the cleaning process of residual fluid in the stator 1 and rotor 2.

[0048] Reference Figure 1 and Figure 2 Stator 1 is presented as Figure 1 The first rotating body shown has a stator 1 with a liquid inlet hole 11 along its central axis and a liquid outlet hole 13 near the outer edge of the stator 1. The liquid outlet hole 13 is aligned with the axial direction of the liquid inlet hole 11. Twelve end holes 12 are evenly distributed around the liquid inlet hole 11, and are coaxial with the liquid inlet hole 11. The twelve end holes 12 are arranged at equal distances and angles with the central axis of the rotor 2 as the center. The end holes 12 are all located between the liquid inlet hole 11 and the liquid outlet hole 13.

[0049] It should be noted that, referring to Figure 3The twelve end holes 12 are divided into six groups, with two end holes 12 in each group symmetrically arranged around the liquid inlet hole 11. Two end holes 12 in one group correspond one-to-one with the two ends of the cleaning pipeline 3, and this group of end holes 12 is designated as a cleaning pipeline interface, and this group of cleaning pipeline interfaces is designated as the first cleaning pipeline interface 1211 and the second cleaning pipeline interface 1212. The remaining ten ports are designated in counter-clockwise order as: first external pipeline interface 121, second external pipeline interface 122, third external pipeline interface 123, fourth external pipeline interface 124, fifth external pipeline interface 125, and sixth external pipeline interface 126. The seventh external interface 127, the eighth external interface 128, the ninth external interface 129, and the tenth external interface 1210; and the first external interface 121 and the sixth external interface 126 form a set of corresponding end holes 12, the second external interface 122 and the seventh external interface 127 form a set of corresponding end holes 12, the third external interface 123 and the eighth external interface 128 form a set of corresponding end holes 12, the fourth external interface 124 and the ninth external interface 129 form a set of corresponding end holes 12, and the fifth external interface 125 and the tenth external interface 1210 form a set of corresponding end holes 12.

[0050] Reference Figure 2 Rotor 2 is shaped like Figure 2 The second rotating body shown has a selection groove 21 on the side wall where the rotor 2 contacts the stator 1. The selection groove 21 is radially arranged along the rotor 2, with one end of the selection groove 21 positioned at the center of the rotor 2. When the rotor 2 and stator 1 are coaxially coupled, the end of the selection groove 21 at the center of the rotor 2 is directly opposite the liquid inlet hole 11, and the other end can be directly opposite any end hole 12. Driven by the motor, the selection groove 21 can be used to connect the liquid inlet hole 11 with any end hole 12. Since the stator 1 has twelve end holes 12, the selection groove 21 has twelve states of connecting the liquid inlet hole 11 and the end hole 12, which are respectively denoted as: first connection state, second connection state, third connection state, fourth connection state, fifth connection state, sixth connection state, seventh connection state, eighth connection state, ninth connection state, tenth connection state, eleventh connection state, and twelfth connection state.

[0051] A circular arc-shaped liquid flow channel 22 is also provided on the side wall where the selection channel 21 is located. The liquid flow channel 22 includes only one non-through-end liquid flow channel. The center of the circle where the liquid flow channel 22 is located coincides with the center of the rotor 2. A connecting channel 23 is also provided on the side wall where the selection channel 21 is located, which is arranged radially along the rotor 2. The first end of the connecting channel 23 is connected to the first end of the liquid flow channel 22. The second end of the connecting channel 23 is used to selectively connect to any end hole 12 on the stator 1.

[0052] It should be noted that both the selection groove 21 and the connecting groove 23 are elongated, and the selection groove 21 and the connecting groove 23 are located on both sides of the center of the rotor 2 and on the same axial direction of the rotor 2; the radius of the circle containing the twelve end holes 12 is the same as the distance from the center of the rotor 2 to the second end of the connecting groove 23, and the length of the selection groove 21 is the same as the distance from the liquid inlet hole 11 to any end hole 12.

[0053] Reference Figure 3 The system includes six pipelines, including five external components 4 and one cleaning pipeline 3, corresponding one-to-one with six sets of end holes 12. The five external components 4 have the same structure and are respectively designated as: first external component 41, second external component 42, third external component 43, fourth external component 44, and fifth external component 45. Each external component 4 includes a first connecting pipe connected to one of the end holes 12 in the corresponding set of end holes 12, and a second connecting pipe connected to the other end hole 12 in the same set of end holes 12. An external connector is connected between the first connecting pipe and the second connecting pipe. In this embodiment, the external connector is used for chromatography of the fluid flowing through the external component 4. It should be noted that in this embodiment, the external connector includes, but is not limited to, a chromatography column or a chromatographic column. In other embodiments, the specific structure of the external connector may be determined according to the operation to be performed on the fluid, and is not limited to the above-mentioned chromatography column or chromatographic column.

[0054] The cleaning pipeline 3 is a third connecting pipe that connects the first cleaning pipeline interface 1211 and the second cleaning pipeline interface 1212. It should be noted that the cleaning pipeline 3 and each external component 4 can conduct in both directions.

[0055] In implementation, refer to Figure 3 One end of the first external component 41 is connected to the first external interface 121, and the other end is connected to the sixth external interface 126; one end of the second external component 42 is connected to the second external interface 122, and the other end is connected to the seventh external interface 127; one end of the third external component 43 is connected to the third external interface 123, and the other end is connected to the eighth external interface 128; one end of the fourth external component 44 is connected to the fourth external interface 124, and the other end is connected to the ninth external interface 129; one end of the fifth external component 45 is connected to the fifth external interface 125, and the other end is connected to the tenth external interface 1210.

[0056] A liquid outlet pipe 5 is connected to the liquid outlet hole 13 on the stator 1. The liquid outlet pipe is used to transport the processed fluid.

[0057] It is important to emphasize that the new flow path design of the multi-position selector valve described above can not only control the fluid selectively to pass through different external components in the forward direction, but also control the fluid selectively to pass through different external components in the reverse direction. Furthermore, there is no dead zone in the flushing when cleaning the common flow path of the multi-position selector valve, which can achieve complete and efficient cleaning of the inside of the multi-position selector valve.

[0058] The following section describes each of the twelve connection states in conjunction with the new flow path design of the multi-position selector valve:

[0059] First connected state (allowing fluid to flow forward through the first external component 41):

[0060] When using the first connected state, refer to Figure 1 , Figure 2 and Figure 3 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 connects the liquid inlet 11 and the first external connection interface 121. At this time, the second end of the connecting groove 23 is connected to the sixth external connection interface 126, and the liquid flow groove 22 is connected to the liquid outlet 13. After the first connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the first external connection interface 121, the first external component 41, the sixth external connection interface 126, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13, and the liquid outlet pipe 5 in sequence.

[0061] Second connected state (allowing fluid to flow in reverse through the first external component 41):

[0062] When using the second connected state, refer to Figure 1 , Figure 2 and Figure 4 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 connects the liquid inlet 11 and the sixth external connection interface 126. At this time, the second end of the connecting groove 23 is connected to the first external connection interface 121, and the liquid flow groove 22 is connected to the liquid outlet 13. After the second connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the sixth external connection interface 126, the first external component 41, the first external connection interface 121, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13, and the liquid outlet pipe 5 in sequence.

[0063] Third connected state (allowing fluid to flow forward through the second external component 42):

[0064] When using the third connected state, refer to Figure 1 , Figure 2 and Figure 5First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 is connected to the liquid inlet 11 and the second external connection interface 122. At this time, the second end of the connecting groove 23 is connected to the seventh external connection interface 127, and the liquid flow groove 22 is connected to the liquid outlet 13. After the third connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the second external connection interface 122, the second external component 42, the seventh external connection interface 127, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13 and the liquid outlet pipe 5 in sequence.

[0065] Fourth connected state (causing fluid to flow in reverse through the second external component 42):

[0066] When using the fourth connected state, refer to Figure 1 , Figure 2 and Figure 6 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 is connected to the liquid inlet 11 and the seventh external connection interface 127. At this time, the second end of the connecting groove 23 is connected to the second external connection interface 122, and the liquid flow groove 22 is connected to the liquid outlet 13. After the fourth connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the seventh external connection interface 127, the second external component 42, the second external connection interface 122, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13, and the liquid outlet pipe 5 in sequence.

[0067] Fifth connected state (allowing fluid to flow forward through the third external component 43):

[0068] When using the fifth connected state, refer to Figure 1 , Figure 2 and Figure 7 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 is connected to the liquid inlet 11 and the third external connection interface 123. At this time, the second end of the connecting groove 23 is connected to the eighth external connection interface 128, and the liquid flow groove 22 is connected to the liquid outlet 13. After the fifth connection state is completed, the fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the third external connection interface 123, the third external component 43, the eighth external connection interface 128, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13 and the liquid outlet pipe 5 in sequence.

[0069] Sixth connected state (causing fluid to flow in reverse through the third external component 43):

[0070] When using the sixth connected state, refer to Figure 1 , Figure 2 and Figure 8First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 is connected to the liquid inlet 11 and the eighth external connection interface 128. At this time, the second end of the connecting groove 23 is connected to the third external connection interface 123, and the liquid flow groove 22 is connected to the liquid outlet 13. After the sixth connection state is completed, the fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the eighth external connection interface 128, the third external component 43, the third external connection interface 123, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13 and the liquid outlet pipe 5 in sequence.

[0071] Seventh connected state (allowing fluid to flow forward through the fourth external component 44):

[0072] When using the seventh connected state, refer to Figure 1 , Figure 2 and Figure 9 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 connects the liquid inlet 11 and the fourth external connection interface 124. At this time, the second end of the connecting groove 23 is connected to the ninth external connection interface 129, and the liquid flow groove 22 is connected to the liquid outlet 13. After the seventh connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the fourth external connection interface 124, the fourth external component 44, the ninth external connection interface 129, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13 and the liquid outlet pipe 5 in sequence.

[0073] Eighth connected state (causing fluid to flow in reverse through the fourth external component 44):

[0074] When using the eighth connected state, refer to Figure 1 , Figure 2 and Figure 10 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 is connected to the liquid inlet 11 and the ninth external connection interface 129. At this time, the second end of the connecting groove 23 is connected to the fourth external connection interface 124, and the liquid flow groove 22 is connected to the liquid outlet 13. After the eighth connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the ninth external connection interface 129, the fourth external component 44, the fourth external connection interface 124, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13 and the liquid outlet pipe 5 in sequence.

[0075] Ninth connected state (allowing fluid to flow forward through the fifth external component 45):

[0076] When using the ninth connected state, refer to Figure 1 , Figure 2 and Figure 11First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 is connected to the liquid inlet 11 and the fifth external connection interface 125. At this time, the second end of the connecting groove 23 is connected to the tenth external connection interface 1210, and the liquid flow groove 22 is connected to the liquid outlet 13. After the ninth connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the fifth external connection interface 125, the fifth external component 45, the tenth external connection interface 1210, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13 and the liquid outlet pipe 5 in sequence.

[0077] Tenth connected state (causing fluid to flow in reverse through the fifth external component 45):

[0078] When using the tenth connected state, refer to Figure 1 , Figure 2 and Figure 12 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 connects the liquid inlet 11 and the tenth external connection interface 1210. At this time, the second end of the connecting groove 23 is connected to the fifth external connection interface 125, and the liquid flow groove 22 is connected to the liquid outlet 13. After the tenth connection state is completed, fluid is injected into the liquid inlet 11. Then the fluid flows through the selection groove 21, the tenth external connection interface 1210, the fifth external component 45, the fifth external connection interface 125, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13, and the liquid outlet pipe 5 in sequence.

[0079] It should be noted that the external components in the first external component 41, the second external component 42, the third external component 43, the fourth external component 44, and the fifth external component 45 all have bidirectional conduction characteristics, so that the first external component 41, the second external component 42, the third external component 43, the fourth external component 44, and the fifth external component 45 connected to the stator 1 not only have the function of forward fluid transportation, but also have the function of reverse fluid transportation.

[0080] Furthermore, by driving the rotor 2 to rotate via the motor, not only can the fluid selectively pass through any one of the first external component 41, the second external component 42, the third external component 43, the fourth external component 44, and the fifth external component 45, but it can also select any one of the first external component 41, the second external component 42, the third external component 43, the fourth external component 44, and the fifth external component 45 for the forward / reverse transmission process of the fluid each time.

[0081] Eleventh connection state (used for cleaning multi-position selector valves, and only this connection state is used for cleaning multi-position selector valves):

[0082] When using the eleventh connected state, refer to Figure 1 , Figure 2 and Figure 13First, the rotor 2 is driven to rotate by the motor, thereby connecting the selection slot 21 to the inlet port 11 and the first cleaning path interface 1211. At this time, the second end of the connecting slot 23 is connected to the second cleaning path interface 1212, and the second end of the liquid flow slot 22 is connected to the outlet port 13. After the eleventh connection state is completed, the cleaning fluid is injected into the inlet port 11. Then the cleaning fluid flows sequentially through the selection slot 21, the first cleaning path interface 1211, the cleaning pipeline 3, the second cleaning path interface 1212, the connecting slot 23, the liquid flow slot 22, the outlet port 13, and the outlet pipe 5. In this way, the common flow path part of the multi-position selection valve, including the inlet port 11, the selection slot 21, the liquid flow slot 22, and the outlet port 13, has no rinsing dead zone during cleaning.

[0083] The twelfth connected state (for illustration only, not to be implemented):

[0084] When using the twelfth connected state, refer to Figure 1 , Figure 2 and Figure 14 First, the rotor 2 is driven to rotate by the motor, so that the selection groove 21 connects the liquid inlet 11 and the second cleaning path interface 1212. At this time, the second end of the connecting groove 23 is connected to the first cleaning path interface 1211, and the liquid flow groove 22 is connected to the liquid outlet 13. After the twelfth connection state is completed, the cleaning liquid is injected into the liquid inlet 11. Then the cleaning liquid flows through the selection groove 21, the second cleaning path interface 1212, the cleaning pipeline 3, the first cleaning path interface 1211, the connecting groove 23, the liquid flow groove 22, the liquid outlet 13, and the liquid outlet pipe 5 in sequence.

[0085] However, it should be noted that the twelfth connection state is not used when cleaning the column flow tank 22, because... Figure 12 As shown, the second end of the liquid flow channel 22 is not directly opposite the liquid outlet 13. As a result, a rinsing dead zone will be generated in the area from the position of the liquid outlet 13 to the second end of the liquid flow channel 22. The above twelfth connection state is only described and not implemented.

[0086] The implementation principle of a multi-position selector valve in this application embodiment is as follows: before fluid transfer, a connection state corresponding to the fluid (one of the first to tenth connection states) is selected, and then the motor is controlled to drive the rotor 2 to make the multi-position selector valve complete the corresponding connection state; after each fluid transfer is completed, the motor is controlled to drive the rotor 2 to make the multi-position selector valve in the eleventh connection state, and then cleaning fluid is flushed into the multi-position selector valve to achieve complete and efficient cleaning of the inside of the multi-position selector valve.

[0087] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-position selector valve, comprising a stator (1) and a rotor (2) coaxially arranged, the rotor (2) being capable of circumferential movement about the central axis, characterized in that: on the stator (1), a liquid inlet hole (11) is arranged at the central axis position, a liquid outlet hole (13) is arranged close to the outer edge position, and a plurality of end holes (12) surrounding the liquid inlet hole (11) are arranged between the liquid inlet hole (11) and the liquid outlet hole (13), two of the end holes (12) are paired, and one pair of the end holes (12) is a pair of cleaning path interfaces; a liquid flow groove (22) is arranged on the end surface of the rotor (2) in contact with the stator (1), and the liquid flow groove (22) only contains one non-end-to-end liquid flow channel; in at least one relative position state of the stator (1) and the rotor (2), the first end of the liquid flow groove (22) is in communication with one of the cleaning path interfaces, and the second end of the liquid flow groove (22) is in communication with the liquid outlet hole (13); a connecting groove (23) is radially arranged on the rotor (2), one end of the connecting groove (23) is in communication with the first end of the liquid flow groove (22), and the other end of the connecting groove (23) is used for selectively communicating with any one of the end holes (12); a selection groove (21) for communicating the liquid inlet hole (11) and a plurality of end holes (12) is arranged on the end surface of the rotor (2) in contact with the stator (1); the length direction of the selection groove (21) is arranged along the radial direction of the rotor (2), one end of the selection groove (21) is opposite to the liquid inlet hole (11), and the other end of the selection groove (21) is used for being opposite to one of the end holes (12). All the end holes (12) are arranged at equal distances and equal angles with the central axis of the stator (1) as the center.

2. The multiple position selector valve of claim 1, wherein: Each pair of end holes (12) is symmetrically arranged with the central axis of the liquid inlet hole (11) as the center; the length directions of the selection groove (21) and the connecting groove (23) are consistent with the straight line direction of one group of end holes (12).

3. The multiple position selector valve of claim 1, wherein: The connecting line between each pair of end holes (12) passes through the center of the stator (1).

4. The multiple position selector valve of claim 1, wherein: A cleaning pipeline (3) is connected between a pair of cleaning path interfaces, and an external component (4) is connected between each pair of end holes (12); the cleaning pipeline (3) and the external component (4) are bidirectionally communicated.

5. The multiple position selector valve of claim 1, wherein: The external component (4) comprises a first connecting pipe connected with one of the end holes (12) in one pair of end holes (12), and a second connecting pipe connected with the other end hole (12), and an external connecting piece is connected between the first connecting pipe and the second connecting pipe.

6. The multiple position selector valve of claim 5, wherein: The rotor (2) is connected with a motor, and the rotor (2) is coaxially connected with the output shaft of the motor.

7. The multiple position selector valve of claim 6, wherein: ​

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