CN215980898U - Movable valve plate adjusting mechanism for multi-liquid-path conversion valve - Google Patents
Movable valve plate adjusting mechanism for multi-liquid-path conversion valve Download PDFInfo
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- CN215980898U CN215980898U CN202121957642.2U CN202121957642U CN215980898U CN 215980898 U CN215980898 U CN 215980898U CN 202121957642 U CN202121957642 U CN 202121957642U CN 215980898 U CN215980898 U CN 215980898U
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- movable valve
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- sealing joint
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Abstract
The utility model relates to a movable valve plate adjusting mechanism for a multi-liquid-circuit conversion valve, which comprises a bridge shaft, wherein the bridge shaft comprises a transverse shaft and a vertical shaft, a transverse cavity is formed in the transverse shaft, a vertical cavity is formed in the vertical shaft, and the vertical cavity is communicated with the transverse cavity; the lower end of the vertical shaft is sleeved with a movable valve plate, the movable valve plate performs vertical sliding sealing movement at the lower end of the vertical shaft, and a valve port is formed in the movable valve plate; and an elastic adjusting mechanism is arranged in the vertical cavity so that the movable valve plate keeps the downward movement trend of the elastic force. The position of the movable valve plate at the lower end of the gap bridge vertical shaft can be elastically adjusted, and the sealing performance of the movable valve plate in the working process is improved.
Description
Technical Field
The utility model relates to the field of medical machinery, in particular to a movable valve plate adjusting mechanism for a multi-liquid-path switching valve.
Background
The tissue dehydrator is used for automatically immersing human or animal and plant tissues into various solvents according to a program for pathological analysis pretreatment such as dehydration, transparency, wax dipping and the like, and is suitable for laboratories of departments such as medical colleges, hospital pathologists, medical scientific research units, animal and plant scientific research units, food detection and the like.
The tissue dehydrator comprises a plurality of reagent cavities, a paraffin cavity and a working cavity, a change-over valve is arranged on the tissue dehydrator, and the working cavity can be sequentially communicated with the reagent cavities and the paraffin cavity through the change-over valve;
the position of a movable valve plate in the conventional conversion valve cannot be adjusted, so that the whole conversion valve is low in sealing performance and easy to leak.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the movable valve plate adjusting mechanism for the multi-liquid-circuit conversion valve overcomes the defects of the prior art, provides the movable valve plate adjusting mechanism for the multi-liquid-circuit conversion valve and solves the problem that the position of the movable valve plate cannot be adjusted in the conventional conversion valve.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a movable valve plate adjusting mechanism for a multi-liquid-path conversion valve comprises a bridge shaft, wherein the bridge shaft comprises a transverse shaft and a vertical shaft, a transverse cavity is formed in the transverse shaft, a vertical cavity is formed in the vertical shaft, and the vertical cavity is communicated with the transverse cavity;
the lower end of the vertical shaft is sleeved with a movable valve plate, the movable valve plate performs vertical sliding sealing movement at the lower end of the vertical shaft, and a valve port is formed in the movable valve plate;
and an elastic adjusting mechanism is arranged in the vertical cavity so that the movable valve plate keeps the downward movement trend of the elastic force.
Furthermore, the elasticity adjusting mechanism comprises an adjusting screw, an upper sealing joint, a lower sealing joint and a compression spring; the adjusting screw is screwed at the upper end of the vertical shaft, the upper sealing joint and the lower sealing joint are positioned in the vertical cavity, the compression spring is positioned between the upper sealing joint and the lower sealing joint, and the lower end of the lower sealing joint is abutted to the movable valve plate.
Further, a sliding step is formed at the lower end of the vertical shaft, a fixing sleeve is sleeved on the sliding step and slides up and down on the sliding step, the lower end of the lower sealing joint is abutted to the fixing sleeve, and a through hole is formed in the middle of the fixing sleeve;
the movable valve plate is fixedly arranged at the lower end of the fixed sleeve, and a valve hole of the movable valve plate is communicated with the vertical cavity through a through hole of the fixed sleeve.
Further, the diameter of the through hole is larger than that of the valve hole, an annular sealing washer is arranged in the through hole, the peripheral side wall of the annular sealing washer is in sealing fit with the inner wall of the through hole, the lower end face of the annular sealing washer is in sealing fit with the upper end face of the movable valve plate, and the lower end face of the lower sealing joint is abutted to the upper end face of the annular sealing washer.
Furthermore, the side walls of the upper sealing joint and the lower sealing joint are respectively provided with an O-shaped sealing ring.
The utility model has the beneficial effects that:
the movable valve plate adjusting mechanism for the multi-liquid-path conversion valve is provided, so that the position of the movable valve plate at the lower end of the bridge-crossing vertical shaft can be elastically adjusted, and the sealing performance of the movable valve plate in the working process is improved.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a half-sectional view of a crossover shaft in a shift valve;
FIG. 2 is a cross-sectional view of the changeover valve;
fig. 3 is a perspective view of the switch valve;
the device comprises a valve seat body 1, a valve seat body 1A, a main passage 2, a mandrel 21, a shaft sleeve 3, a bridge shaft 31, a transverse cavity 32, a vertical cavity 4, an elastic force adjusting mechanism 41, an upper sealing joint 42, a lower sealing joint 43, a compression spring 44, an adjusting screw 51, a fixed sleeve 52, a movable valve plate 53, an annular sealing gasket 61, a valve housing 62, a motor 7, a static valve plate 71, a paraffin passage 72, a reagent passage 73, a liquid changing passage 74 and a radial overflow groove.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, the movable valve plate adjusting mechanism comprises a bridge shaft 3, wherein the bridge shaft 3 comprises a transverse shaft and a vertical shaft, a transverse cavity 31 is formed in the transverse shaft, a vertical cavity 32 is formed in the vertical shaft, and the vertical cavity 32 is communicated with the transverse cavity 31; the lower end of the vertical shaft is sleeved with a movable valve plate 52, the movable valve plate 52 performs vertical sliding sealing movement at the lower end of the vertical shaft, and a valve port is formed in the movable valve plate 52; an elastic adjusting mechanism is arranged in the vertical cavity 32, so that the movable valve plate 52 keeps the downward movement trend of the elastic force.
Specifically, the elasticity adjusting mechanism 4 comprises an adjusting screw 44, an upper sealing joint 41, a lower sealing joint 42 and a compression spring 43; the adjusting screw 44 is screwed at the upper end of the vertical shaft, the upper sealing joint 41 and the lower sealing joint 42 are positioned in the vertical cavity 32, the compression spring 43 is positioned between the upper sealing joint 41 and the lower sealing joint 42, and the lower end of the lower sealing joint 42 is abutted to the movable valve plate 52. The lower end of the adjusting screw 44 is positioned in the vertical cavity 32, the lower end of the adjusting screw 44 abuts against the upper sealing joint 41, and the adjusting screw 44 controls the height of the upper sealing joint 41 in the vertical cavity 32 through rotation.
Specifically, for the mounting structure between the movable valve plate 52 and the vertical shaft: a sliding step is formed at the lower end of the vertical shaft, a fixed sleeve 51 is sleeved on the sliding step, the fixed sleeve 51 slides up and down on the sliding step, the lower end of the lower sealing joint 42 is abutted against the fixed sleeve 51, and a through hole is formed in the middle of the fixed sleeve 51; the movable valve plate 52 is fixedly arranged at the lower end of the fixed sleeve 51, and a valve hole of the movable valve plate 52 is communicated with the vertical cavity 32 through a through hole of the fixed sleeve 51.
In order to improve the sealing performance between the lower sealing joint 42 and the fixed sleeve 51, the perforation diameter of the fixed sleeve 51 is larger than the diameter of the valve hole, an annular sealing gasket 53 is arranged in the perforation, the peripheral side wall of the annular sealing gasket 53 is in sealing fit with the inner wall of the perforation, the lower end face of the annular sealing gasket 53 is in sealing fit with the upper end face of the movable valve plate 52, and the lower end face of the lower sealing joint 42 is abutted to the upper end face of the annular sealing gasket 53.
In order to improve the sealing performance between the sealing joint and the inner wall of the vertical cavity 32, the side walls of the upper sealing joint 41 and the lower sealing joint 42 are respectively provided with an O-shaped sealing ring.
When the adjusting screw 44 is tightened, the compression spring 43 is compressed, and applies an axial force to the movable valve plate 52, so that the movable valve plate 52 moves downwards, and the sealing performance of the movable valve plate 52 is improved.
As shown in fig. 2 and 3, the switching valve of the tissue dehydrator comprises a valve seat body 1 and a gap bridge assembly, wherein the valve seat body 1 is provided with a static valve plate 7, a main passage 1A, a reagent passage 72, a paraffin passage 71 and a liquid changing passage 73 are arranged in the valve seat body 1, and outlets of the reagent passage 72, the paraffin passage 71 and the liquid changing passage 73 are respectively arranged on the static valve plate 7.
Specifically, a paraffin area and a reagent area are arranged on the static valve plate 7, the outlets of the reagent passage 72 and the liquid changing passage 73 are arranged in the reagent area, and the outlet of the paraffin passage 71 is arranged in the paraffin area; radial overflow chutes 74 are respectively arranged on the valve port switching areas on the two sides of the paraffin area, and the radial overflow chutes 74 are connected with the settling area. The radial overflow groove on the static valve plate 7 can effectively prevent the leaked paraffin from flowing into the adjacent reagent passage to cause the blockage of the reagent passage, thereby improving the overall reliability of the valve.
The gap bridge assembly comprises a mandrel 2 and a gap bridge shaft 3, the gap bridge shaft 3 adopts the gap bridge shaft 3 of the utility model, the lower end of the mandrel 2 is hermetically and rotatably connected with the inlet of the main passage 1A, specifically, the inlet of the main passage 1A forms a step hole, a shaft sleeve 21 is arranged in the step hole, a bearing is arranged on the shaft sleeve 21, and the lower end of the mandrel 2 is rotatably matched with the shaft sleeve 21 through the bearing; the valve seat body 1 is fixed with a valve housing 61, the upper end of the mandrel 2 is in running fit with the valve housing 61, the upper end of the mandrel 2 is connected with a belt pulley, and the belt pulley and the motor 62 are in running fit. The mandrel 2 drives the gap bridge shaft 3 to rotate together in the rotating process; the movable valve plate 52 at the lower end of the vertical shaft in the bridge shaft 3 is tightly attached to the static valve plate 7, and by means of the adjusting mechanism, the adjusting screw 44 is rotated, the compression spring 43 is compressed, an axial force is applied to the movable valve plate 52, the movable valve plate 52 moves downwards, and the movable valve plate 52 can be tightly attached to the end face of the static valve plate 77. The reliable sealing between the end surfaces of the movable valve plate 52 and the static valve plate 7 in the relative movement process is ensured.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. A movable valve plate adjusting mechanism for a multi-liquid-path conversion valve is characterized by comprising a bridge shaft, wherein the bridge shaft comprises a transverse shaft and a vertical shaft, a transverse cavity is formed in the transverse shaft, a vertical cavity is formed in the vertical shaft, and the vertical cavity is communicated with the transverse cavity;
the lower end of the vertical shaft is sleeved with a movable valve plate, the movable valve plate performs vertical sliding sealing movement at the lower end of the vertical shaft, and a valve port is formed in the movable valve plate;
an elastic force adjusting mechanism is arranged in the vertical cavity so that the movable valve plate keeps the downward movement trend of the elastic force;
the elasticity adjusting mechanism comprises an adjusting screw, an upper sealing joint, a lower sealing joint and a compression spring; the adjusting screw is screwed at the upper end of the vertical shaft, the upper sealing joint and the lower sealing joint are positioned in the vertical cavity, the compression spring is positioned between the upper sealing joint and the lower sealing joint, and the lower end of the lower sealing joint is abutted against the movable valve plate;
the lower end of the vertical shaft forms a sliding step, a fixed sleeve is sleeved on the sliding step and slides up and down, the lower end of the lower sealing joint is abutted against the fixed sleeve, and a through hole is formed in the middle of the fixed sleeve;
the movable valve plate is fixedly arranged at the lower end of the fixed sleeve, and a valve hole of the movable valve plate is communicated with the vertical cavity through a through hole of the fixed sleeve;
the diameter of the perforation is larger than the diameter of the valve hole, an annular sealing washer is arranged in the perforation, the peripheral side wall of the annular sealing washer is in sealing fit with the inner wall of the perforation, the lower end face of the annular sealing washer is in sealing fit with the upper end face of the movable valve plate, and the lower end face of the lower sealing joint is abutted to the upper end face of the annular sealing washer.
2. The movable valve plate adjusting mechanism for a multi-fluid passage switching valve according to claim 1, wherein the side walls of the upper sealing joint and the lower sealing joint are respectively provided with an O-shaped sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121957642.2U CN215980898U (en) | 2021-08-19 | 2021-08-19 | Movable valve plate adjusting mechanism for multi-liquid-path conversion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121957642.2U CN215980898U (en) | 2021-08-19 | 2021-08-19 | Movable valve plate adjusting mechanism for multi-liquid-path conversion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980898U true CN215980898U (en) | 2022-03-08 |
Family
ID=80580650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121957642.2U Active CN215980898U (en) | 2021-08-19 | 2021-08-19 | Movable valve plate adjusting mechanism for multi-liquid-path conversion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215980898U (en) |
-
2021
- 2021-08-19 CN CN202121957642.2U patent/CN215980898U/en active Active
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