CN221610642U - Rotor for high-pressure flow path switching valve of liquid chromatograph - Google Patents
Rotor for high-pressure flow path switching valve of liquid chromatograph Download PDFInfo
- Publication number
- CN221610642U CN221610642U CN202420233763.XU CN202420233763U CN221610642U CN 221610642 U CN221610642 U CN 221610642U CN 202420233763 U CN202420233763 U CN 202420233763U CN 221610642 U CN221610642 U CN 221610642U
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- rotor
- flow path
- rotor body
- face
- circular
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- 239000007788 liquid Substances 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a rotor for a high-pressure flow path switching valve of a liquid chromatograph, which comprises a disc-shaped rotor body and is characterized in that a circular installation area is concavely arranged on the front end face and the rear end face of the rotor body along the central axis of the rotor body respectively, the circular installation area is coaxial with the rotor body, a circular protruding part for press fit installation with a corresponding part of a matched stator is convexly arranged in the center of each circular installation area, the protruding part is coaxial with the rotor body, and three flow path grooves which are not communicated with each other are arranged on each protruding part. The rotor has the advantages that the structure is simple, the front end face and the rear end face of the rotor body are respectively provided with the convex parts which are matched with the matched stators, and the flow path grooves are respectively processed on each convex part, so that the rotor is changed into two rotors in theory, one face of the rotor is worn, the rotor can be replaced to the other face of the rotor to be continuously practical, and the service life of the rotor is doubled.
Description
Technical Field
The present utility model relates to a rotor, and more particularly, to a rotor for a high-pressure flow path switching valve of a liquid chromatograph.
Background
At present, if the automatic sample injection is to be realized in the high-performance liquid chromatograph, a high-pressure flow path switching valve is required to be used for switching flow paths, wherein a rotor and a stator which are matched with each other are key components of the high-pressure switching valve, three non-communicated grooves are uniformly distributed in a round shape in the center of the rotor, six flow path holes are uniformly distributed in the round shape in the center of the stator, the diameters of the two circles are consistent, when the stator and the rotor are assembled, two adjacent holes on the stator can be communicated with each other through the grooves on the rotor by adjusting the angle of the rotor, so that three non-affected passages are formed, and once the rotor rotates for 60 degrees, the flow path switching is completed. In order to maintain tightness under high pressure, the rotor and the stator must relatively rotate under the condition of extreme compression, the rotor will gradually wear in the process, the extreme compression cannot be realized with the stator after wear, and a new rotor must be replaced, so the rotor is a consumable part in an automatic sample injection device of a liquid chromatograph. However, due to the special nature of the materials and the precision of processing, the price of the existing rotor with a structure is always high, which results in higher use cost, so how to prolong the service life of the rotor to save the cost becomes one of the problems which are needed to be solved at present.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a rotor for a high-pressure flow path switching valve of a liquid chromatograph, which has a simple structure and can effectively prolong the service life.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a rotor for high-pressure flow path switching valve of liquid chromatograph, includes the rotor body of disc, the rotor body follow the preceding terminal surface of the central axis of rotor body and rear end face sunken respectively be provided with a circular installation region, circular installation region with the rotor body coaxial, every the center arch of circular installation region be provided with be used for with the corresponding partial pressfitting installation circular bellying of matched with stator, bellying with the rotor body coaxial, every bellying on be provided with three flow path groove that are not mutually communicated.
The circular installation area in be provided with three front and back link up the rotor fixing pinhole, three the rotor fixing pinhole round the central axis equipartition of rotor body set up. The top of the rotating shaft of the rotating motor at the bottom of the rotor is provided with three fixing pins, and the three fixing pins are respectively inserted into the three rotor fixing pin holes, so that the motor drives the rotor to rotate, and the purpose of switching flow paths is achieved.
The side part of the rotor body is provided with a positioning recess. The positioning recess serves as a position indication for installation.
Compared with the prior art, the utility model has the advantages that: simple structure sets up the bellying that is used for installing with the stator cooperation of looks adaptation respectively on two terminal surfaces around the rotor body, and has processed the flow path groove respectively on every bellying for this rotor becomes two in theory, and one side wearing and tearing after, removable another side continue practical, and life has prolonged one time.
Drawings
FIG. 1 is a schematic diagram of the front structure of the present utility model;
FIG. 2 is a schematic view of the reverse structure of the present utility model;
fig. 3 is a schematic cross-sectional view of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in the figure, the rotor for the high-pressure flow path switching valve of the liquid chromatograph comprises a disc-shaped rotor body 1, wherein a circular installation area 11 is concavely arranged on the front end face and the rear end face of the rotor body 1 along the central axis of the rotor body 1 respectively, the circular installation area 11 is coaxial with the rotor body 1, a circular protruding part 12 for pressing and installing the corresponding part of a matched stator is convexly arranged in the center of each circular installation area 11, the protruding part 12 is coaxial with the rotor body 1, and three flow path grooves 13 which are not communicated with each other are arranged on each protruding part 12.
In this embodiment, three rotor fixing pin holes 14 penetrating in the front-rear direction are provided in the circular mounting region 11, and the three rotor fixing pin holes 14 are uniformly distributed around the central axis of the rotor body 1. The top of the rotating shaft of the rotating motor at the bottom of the rotor is provided with three fixing pins which are respectively inserted into the three rotor fixing pin holes 14, so that the motor drives the rotor to rotate, and the purpose of switching flow paths is achieved.
In this particular embodiment, the side of the rotor body 1 is provided with a positioning recess 15. The positioning recess 15 serves as a position indication for installation.
Claims (3)
1. The utility model provides a rotor for high-pressure flow path switching valve of liquid chromatograph, includes disk rotor body, its characterized in that rotor body follow the front end face and the rear end face of the central axis of rotor body sunken respectively be provided with a circular installation region, circular installation region with rotor body coaxial, every the center arch of circular installation region be provided with be used for with the corresponding partial pressfitting installation's of matched with circular bellying of stator, bellying with rotor body coaxial, every bellying on be provided with three not communicating flow path groove each other.
2. The rotor for a high-pressure flow path switching valve of a liquid chromatograph according to claim 1, wherein three rotor fixing pin holes penetrating in front and back are provided in the circular mounting area, and the three rotor fixing pin holes are uniformly distributed around the central axis of the rotor body.
3. The rotor for a high-pressure flow path switching valve of a liquid chromatograph according to claim 1, wherein a positioning recess is provided at a side portion of the rotor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420233763.XU CN221610642U (en) | 2024-01-31 | 2024-01-31 | Rotor for high-pressure flow path switching valve of liquid chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420233763.XU CN221610642U (en) | 2024-01-31 | 2024-01-31 | Rotor for high-pressure flow path switching valve of liquid chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221610642U true CN221610642U (en) | 2024-08-27 |
Family
ID=92431996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420233763.XU Active CN221610642U (en) | 2024-01-31 | 2024-01-31 | Rotor for high-pressure flow path switching valve of liquid chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221610642U (en) |
-
2024
- 2024-01-31 CN CN202420233763.XU patent/CN221610642U/en active Active
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| GR01 | Patent grant |