CN220551520U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN220551520U CN220551520U CN202322022180.0U CN202322022180U CN220551520U CN 220551520 U CN220551520 U CN 220551520U CN 202322022180 U CN202322022180 U CN 202322022180U CN 220551520 U CN220551520 U CN 220551520U
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- valve
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- wedge
- flange
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- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model relates to a gate valve, which comprises a valve body, a valve plate and a driving assembly; the valve body is provided with a first through hole, the first through hole extends along a first direction and is used for medium flow, and the side part of the valve body is provided with an avoidance port; the valve plate comprises a shell and a valve core positioned in the shell, one end of the shell is provided with a wedge-shaped structure, the tip of the wedge-shaped structure is inserted and fixed in the valve body through the avoidance port, second through holes which are opposite to each other along the first direction are formed in inclined planes on two sides of the wedge-shaped structure, and the hole walls of the second through holes are in profiling fit connection with the hole walls of the first through holes; the driving assembly is used for driving the valve core to be close to or far away from the second through hole along the extending direction of the valve plate, and the valve core can be in sealing connection with the shell when being positioned in the second through hole; the utility model can meet the requirement of high vacuum environment and has better sealing effect.
Description
Technical Field
The utility model relates to the technical field of industrial valves, in particular to a gate valve.
Background
The gate valve is also called a knife gate valve, is a valve with a gate plate and a valve seat being always in tight contact and sealing, a circular opening with the diameter is formed in the gate plate, the circular opening on the gate plate and the diameter are completely separated and matched through the opening and closing of the gate plate, the movement of the gate plate is utilized to control the flow of a medium, the gate valve does not have a flow regulating function, only has a fully opened or fully closed state, and can be used for isolating areas with different vacuum degrees or isolating vacuum environments and other gas environments when the gate valve is in the fully closed state, so that the requirement on the vacuum degree of the gate valve is higher in practical production application, and the gate valve with high vacuum degree environment and good sealing performance is lacked.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problem of insufficient tightness of the gate valve in the prior art, and provides the gate valve which can realize a high-vacuum environment by improving the tightness.
In order to solve the technical problems, the utility model provides a gate valve, which comprises,
the valve body is provided with a first through hole, the first through hole extends along a first direction and is used for medium flow, and the side part of the valve body is provided with an avoidance port;
the valve plate comprises a shell and a valve core positioned in the shell, one end of the shell is provided with a wedge structure, the tip of the wedge structure is inserted and fixed in the valve body through the avoidance port, second through holes which are opposite to each other along the first direction are formed in inclined planes on two sides of the wedge structure, and the hole walls of the second through holes are in profiling fit connection with the hole walls of the first through holes; the valve core is driven to be close to or far away from the second through hole along the extending direction of the valve plate, and can be in sealing connection with the shell when being positioned in the second through hole;
and the driving assembly is connected with and drives the valve core to move.
In one embodiment of the utility model, at least one of the two side surfaces of the valve spool in the first direction is provided as a slope and the taper of the wedge structure of the housing at that side is the same.
In one embodiment of the utility model, the same taper of the wedge-shaped structure of the valve core is recessed towards the interior of the valve core to form a dovetail groove.
In one embodiment of the utility model, the dovetail groove is disposed around the periphery of the orifice of the second through-hole when the spool is sealingly connected to the housing.
In one embodiment of the present utility model, the housing of the valve plate includes a first housing and a second housing, which are disposed opposite to each other along the first direction and can be spliced, and ribs are further disposed on surfaces of the first housing and the second housing.
In one embodiment of the present utility model, the first housing and the second housing are symmetrically disposed.
In one embodiment of the utility model, the valve further comprises a connecting flange, wherein the connecting flange is connected with one end of the valve plate far away from the wedge-shaped structure, and the power output end of the driving assembly extends to the inside of the shell through the connecting flange and is connected with the valve core.
In one embodiment of the utility model, the driving assembly comprises a cylinder body and a screw rod, one end of the screw rod is connected with one side of the valve core, which is far away from the tip end of the wedge-shaped structure, and the extending direction of the screw rod is parallel to the extending direction of the valve plate.
In one embodiment of the utility model, the valve body comprises a first flange, a second flange and a connecting part, wherein the first flange and the second flange are arranged opposite to each other along the first direction, the connecting part is used for connecting the first flange and the second flange, and the connecting part is positioned at the periphery of the wedge-shaped structure of the shell.
In one embodiment of the utility model, the connection is provided as three stop tabs.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
the first through hole and the second through hole which are communicated are arranged, so that dead volume does not exist when the medium flows in the opening state of the gate valve, leakage is not easy to occur in the closing state, and the sealing effect is good; the utility model is provided with the wedge-shaped structure and is sealed by utilizing the plug connection of the valve core, so that the utility model has good sealing effect and can meet the requirement of high vacuum environment.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:
FIG. 1 is a schematic view of a gate valve in accordance with a preferred embodiment of the present utility model;
FIG. 2 is an exploded view of a flapper valve in a preferred embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional isometric view of a valve plate and drive assembly in accordance with a preferred embodiment of the utility model;
fig. 4 is an enlarged schematic view at a in fig. 3.
Description of the specification reference numerals: 1. a valve body; 11. a first through hole; 12. a first flange; 13. a second flange; 14. a stop piece; 2. a valve plate; 3. a housing; 31. a first shell; 32. a second shell; 33. a convex rib; 34. a second through hole; 4. a valve core; 41. a dovetail groove; 5. a connecting flange; 6. a drive assembly; 61. a cylinder; 62. and (5) a screw rod.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Examples
Referring to fig. 1 to 4, the utility model provides a gate valve, which comprises a valve body 1, a valve plate 2 sealed with the valve body 1, and a driving assembly 6, wherein the driving assembly 6 is connected with and used for driving a valve core 4 of the valve plate 2 to move, so that the valve core 4 is in sealed connection with the valve body 1; when the valve plate 2 is in sealing connection with the valve body 1, the gate valve is in a closed state, and medium flow at two sides of the gate valve can be isolated; when the valve plate 2 is separated from the valve body 1, the gate valve is in an open state, and the gate valve has good tightness and can meet the requirement of a high-vacuum environment.
Specifically, referring to fig. 2, the valve body 1 is provided with a first through hole 11 in an axial direction, the first through hole 11 extending in a first direction for medium flow; the valve body 1 comprises a first flange 12, a second flange 13 and a connecting part, wherein the first flange 12 and the second flange 13 are arranged opposite to each other along the first direction, the connecting part is used for connecting at least partial areas of the first flange 12 and the second flange 13, and the connecting part forms a semi-surrounding structure at the side part of the valve body 1 and is used for limiting the valve plate 2; the side part of the valve body 1 is positioned at the opposite side of the connecting part and is also provided with an avoidance port, and the valve plate 2 is inserted into the valve body 1 through the avoidance port. Further, the first through hole 11 further includes a part of hole wall disposed on the first flange 12 and a part of hole wall disposed on the second flange 13, and the hole wall of the first through hole 11 is disposed opposite to the first through hole and provides an avoidance space for plugging of the valve plate 2; further, the end surfaces of the first flange 12 and the second flange 13 are provided with mounting holes, and the gate valve can be mounted in a medium flow pipeline through the mounting holes for use.
Specifically, referring to fig. 2, the valve plate 2 includes a housing 3 and a valve core 4 located inside the housing 3, one end of the housing 3 is provided with a wedge structure, a tip of the wedge structure is inserted and fixed in the valve body 1 through the avoidance port, two inclined planes on two sides of the wedge structure are provided with second through holes 34 which are opposite to each other along the first direction, and a hole wall of the second through holes 34 is in profiling fit connection with a hole wall of the first through hole 11, so as to allow a medium to flow; the orifice of the second through hole 34 is attached to the orifice of the first through hole 11, so that there is no dead volume when the medium flows, the possible residual medium is reduced, and the service life of the gate valve is prolonged. Meanwhile, the wedge-shaped structure can improve the connection strength of the valve plate 2 and the valve body 1 during plugging, and the fixing effect is better. In some embodiments, the connecting portion is located at the periphery of the wedge-shaped structure of the housing 3, and the connecting portion is provided as three stop pieces 14 and is limited by end surfaces respectively located at three sides of the wedge-shaped structure.
Further, referring to fig. 2, the valve element 4 may be driven by the driving assembly 6, and may be close to or far from the second through hole 34 along the extending direction of the valve plate 2, and may be connected with the housing 3 in a sealing manner when located in the second through hole 34, so as to block a medium flow path, and make the gate valve in a closed state; when the valve core 4 is far away from the second through hole 34, the medium flowing passage is communicated, and the gate valve is in an open state.
Specifically, referring to fig. 2, when the valve element 4 is in sealing connection with the housing 3, at least one of the two side surfaces of the valve element 4 in the first direction is provided with an inclined surface, and the taper of the inclined surface is the same as the taper of the wedge-shaped structure of the housing 3 on the side. In some embodiments, referring to fig. 3 and 4, one side of the valve core 4 is provided with the inclined surface, and the dovetail groove 41 is concavely formed on the inclined surface facing the inner part of the valve core 4; when the valve core 4 is in sealing connection with the housing 3, the dovetail groove 41 is arranged around the periphery of the orifice of the second through hole 34, and the dovetail groove 41 can be provided with a sealing ring for sealing the gap between the valve core 4 and the inner wall of the housing 3, so that a better sealing effect is provided; referring to fig. 3, the valve core 4 is hollow, and the other side surface along the first direction is supported on the inner wall of the casing 3, so that the weight of the valve core 4 can be reduced, and the valve core is convenient to assemble and drive; in some embodiments, both sides of the valve core 4 are set to be inclined planes with the same taper as that of the wedge structure, and sealing connection is performed on both sides of the gate valve along the first direction.
Specifically, referring to fig. 2, the housing 3 of the valve plate 2 includes a first housing 31 and a second housing 32, which are disposed opposite to each other along the first direction and can be spliced, and ribs 33 are further disposed on surfaces of the first housing 31 and the second housing 32, so as to improve structural strength of the gate valve; in some embodiments, the first housing 31 and the second housing 32 are symmetrically arranged, which facilitates mold opening and manufacturing, and also facilitates assembly and maintenance of the insert valve.
Specifically, referring to fig. 2, the gate valve further includes a connection flange 5, where the connection flange 5 is located at an end of the valve plate 2 away from the wedge structure and is fixedly connected with the housing; the power output end of the driving assembly 6 extends into the shell 3 through the connecting flange 5 and is connected with the valve core 4; in some embodiments, the driving assembly 6 is configured as an electric cylinder, and includes a cylinder body 61 and a screw 62, one end of the screw 62 is connected to a side of the valve core 4 away from the tip of the wedge structure, and an extending direction of the screw 62 is parallel to an extending direction of the valve plate 2.
The working principle of the gate valve provided by the utility model is as follows:
the gate valve is arranged in a medium flow passage through the first flange 12 and the second flange 13, the medium flow is controlled through the opening or closing state of the gate valve, and when a vacuum environment is needed, the gas flow is isolated to meet the requirement of high vacuum degree;
the driving assembly 6 drives the valve core 4 to move in the extending direction of the valve plate 2 through the lead screw 62, when the valve core 4 moves to the second through hole 34 of the shell 3, a clearance between one side surface of the valve core 4 and the inner wall of the shell 3 is sealed through a sealing ring in a dovetail groove 41 on the surface of the valve core, so that sealing connection is realized, and the other side of the valve core 4 is supported on the inner wall of the other side of the shell 3 and clamps the sealing ring; at this time, the gate valve is in a closed state, and the medium cannot flow in the first through hole 11; when the driving assembly 6 drives the valve core 4 to be separated from the second through hole 34, the orifice of the second through hole 34 is communicated with the wall of the first through hole 11 to form a through medium flow passage, and the gate valve is in an open state at the moment.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A gate valve is characterized by comprising,
the valve body is provided with a first through hole, the first through hole extends along a first direction and is used for medium flow, and the side part of the valve body is provided with an avoidance port;
the valve plate comprises a shell and a valve core positioned in the shell, one end of the shell is provided with a wedge structure, the tip of the wedge structure is inserted and fixed in the valve body through the avoidance port, second through holes which are opposite to each other along the first direction are formed in inclined planes on two sides of the wedge structure, and the hole walls of the second through holes are in profiling fit connection with the hole walls of the first through holes; the valve core is driven to be close to or far away from the second through hole along the extending direction of the valve plate, and can be in sealing connection with the shell when being positioned in the second through hole;
and the driving assembly is connected with and drives the valve core to move.
2. A gate valve according to claim 1, wherein: at least one of the two side surfaces of the valve core along the first direction is provided with an inclined surface, and the taper of the valve core is the same as that of the wedge-shaped structure of the shell at the side.
3. A gate valve according to claim 2, wherein: and the inclined surface of the valve core, which is the same as the taper of the wedge-shaped structure, is recessed towards the inner part of the valve core to form a dovetail groove.
4. A gate valve according to claim 3, wherein: when the valve core is in sealing connection with the shell, the dovetail groove is arranged around the periphery of the orifice of the second through hole.
5. A gate valve according to claim 1, wherein: the shell of the valve plate comprises a first shell and a second shell which are arranged opposite to each other along the first direction and can be spliced, and ribs are further arranged on the surfaces of the first shell and the second shell.
6. A gate valve according to claim 5, wherein: the first shell and the second shell are symmetrically arranged.
7. A gate valve according to claim 1, wherein: the valve plate is connected with the valve plate through the connecting flange, the valve plate is far away from one end of the wedge-shaped structure, and the power output end of the driving assembly extends to the inside of the shell through the connecting flange and is connected with the valve core.
8. A gate valve according to claim 7, wherein: the driving assembly comprises a cylinder body and a screw rod, one end of the screw rod is connected with one side, far away from the tip end of the wedge-shaped structure, of the valve core, and the extending direction of the screw rod is parallel to the extending direction of the valve plate.
9. A gate valve according to claim 1, wherein: the valve body comprises a first flange, a second flange and a connecting part, the first flange and the second flange are arranged opposite to each other along the first direction, the connecting part is used for connecting the first flange and the second flange, and the connecting part is positioned on the periphery of the wedge-shaped structure of the shell.
10. A gate valve according to claim 9, wherein: the connecting part is provided with three stop sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322022180.0U CN220551520U (en) | 2023-07-31 | 2023-07-31 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322022180.0U CN220551520U (en) | 2023-07-31 | 2023-07-31 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551520U true CN220551520U (en) | 2024-03-01 |
Family
ID=90009919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322022180.0U Active CN220551520U (en) | 2023-07-31 | 2023-07-31 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551520U (en) |
-
2023
- 2023-07-31 CN CN202322022180.0U patent/CN220551520U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |