CN219327801U - Anti-flushing multi-seal stop valve - Google Patents
Anti-flushing multi-seal stop valve Download PDFInfo
- Publication number
- CN219327801U CN219327801U CN202320080327.9U CN202320080327U CN219327801U CN 219327801 U CN219327801 U CN 219327801U CN 202320080327 U CN202320080327 U CN 202320080327U CN 219327801 U CN219327801 U CN 219327801U
- Authority
- CN
- China
- Prior art keywords
- valve
- arc surface
- utility
- clack
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
An anti-flushing multi-seal stop valve belongs to the technical field of stop valves, and particularly relates to an anti-flushing multi-seal stop valve. The utility model provides the anti-flushing multi-seal stop valve which has a simple structure and long service life and is more suitable for high temperature, high pressure or corrosive mediums. The utility model comprises a valve body, a valve seat and a valve rod are arranged in the valve body, a medium channel is arranged in the valve seat, and a valve clack for sealing the medium channel in the valve seat is arranged at the end part of the valve rod, and the utility model is characterized in that: the valve seat is provided with a convex arc surface at one end matched with the valve clack, the valve clack is provided with a concave arc surface matched with the convex arc surface, the lower end of the valve clack is provided with an insertion head in an extending manner along the tangential direction of the concave arc surface, and the outer wall of the insertion head is matched with the inner wall of the medium channel; an upward diversion inclined plane is arranged above the concave arc surface.
Description
Technical Field
The utility model belongs to the technical field of stop valves, and particularly relates to an anti-impact multi-seal stop valve.
Background
The stop valve is widely applied to various industries, and for the industries of nuclear power, thermal power, refining, chemical industry, coking and the like, the medium is special, and the stop valve relates to high-pressure steam, high-pressure water, acid-base solution and the like. When the common stop valve faces the special working condition, the internal leakage and the abrasion of the sealing surface are serious in the stop valve, especially after the sealing surface is washed by special state medium for a long time.
Disclosure of Invention
The utility model aims at the problems and provides the anti-flushing multi-seal stop valve which is simple in structure, long in service life and more suitable for high temperature, high pressure or corrosive mediums.
In order to achieve the above purpose, the utility model adopts the following technical scheme that the utility model comprises a valve body, wherein a valve seat and a valve rod are arranged in the valve body, a medium channel is arranged in the valve seat, and a valve clack for sealing the medium channel in the valve seat is arranged at the end part of the valve rod, and the utility model is characterized in that: the valve seat is provided with a convex arc surface at one end matched with the valve clack, the valve clack is provided with a concave arc surface matched with the convex arc surface, the lower end of the valve clack is provided with an insertion head in an extending manner along the tangential direction of the concave arc surface, and the outer wall of the insertion head is matched with the inner wall of the medium channel; an upward diversion inclined plane is arranged above the concave arc surface.
As a preferable scheme of the utility model, the outer surface of the insertion head is provided with double seal ring grooves.
As another preferable mode of the utility model, the upper surface of the valve seat is provided with an inclined plane anti-collision ring.
As a third preferred aspect of the present utility model, the valve stem may be a self-aligning valve stem.
As a fourth preferred aspect of the present utility model, the insertion head is provided with an insertion chamfer at a lower end thereof.
The utility model has the beneficial effects that: 1. the valve clack is provided with the diversion inclined plane, the lower end of the diversion inclined plane is provided with the concave arc surface, the diversion inclined plane effectively plays a role in diversion, and the concave arc sealing surface is basically not eroded and worn by a medium when the medium flows through the inclined plane.
2. The inclined plane anti-collision ring is arranged on the valve seat, so that the medium can flow upwards in the direction of guiding the inclined flow, the medium can impact on the cylindrical surface of the valve rod, unbalanced force can be well dispersed, the medium can be reduced to directly impact the sealing surface, the impact force generated by the medium can directly act on the anti-collision ring, and the flushing of the medium on the sealing surface of the valve is counteracted.
3. The side surface of the cylindrical insertion head at the lower end of the valve clack is provided with the two axial sealing grooves, and the pressure in the two sealing grooves is balanced through a medium in the sealing grooves to play a role in sealing, so that an auxiliary sealing effect can be effectively achieved. If one part of the sealing surface of the stop valve is damaged, the stop valve can be tightly closed under one sealing surface. Effectively prolonging the service life of the stop valve.
Drawings
FIG. 1 is a schematic illustration of the connection of a valve stem and a valve flap of the present utility model.
Fig. 2 is a schematic view of the structure of the valve seat of the present utility model.
Fig. 3 is a schematic view of the structure of the valve body of the present utility model in an opened state.
Fig. 4 is a schematic view of the structure of the valve body of the present utility model in a closed state.
In the drawings, 1 is an insertion head, 2 is an insertion chamfer, 3 is a sealing groove, 4 is a concave arc surface, 5 is a diversion inclined surface, 6 is a valve clack, 7 is a valve rod, 8 is a valve seat, 9 is a convex arc surface, 10 is an inclined surface anti-impact ring, 11 is a valve body and 12 is a medium channel.
Detailed Description
The utility model comprises a valve body 11, a valve seat 8 and a valve rod 7 are arranged in the valve body 11, a medium channel 12 is arranged in the valve seat 8, a valve clack 6 for closing the medium channel 12 in the valve seat 8 is arranged at the end part of the valve rod 7, and the utility model is characterized in that: a convex arc surface 9 is arranged at one end of the valve seat 8 matched with the valve clack 6, a concave arc surface 4 matched with the convex arc surface 9 is arranged on the valve clack 6, an insertion head 1 is arranged at the lower end of the valve clack 6 in an extending manner along the tangential direction of the concave arc surface 4, and the outer wall of the insertion head 1 is matched with the inner wall of the medium channel 12; an upward diversion inclined plane 5 is arranged above the concave arc surface 4.
As a preferable scheme of the utility model, the outer surface of the insertion head 1 is provided with double seal ring grooves.
As another preferable mode of the utility model, the upper surface of the valve seat 8 is provided with an inclined plane anti-impact ring 10.
As a third preferred aspect of the present utility model, the valve stem 7 may be a self-aligning valve stem 7.
As a fourth preferred embodiment of the present utility model, the lower end of the insertion head 1 is provided with an insertion chamfer 2.
When the valve is closed, the insertion head 1 of the valve flap 6 is first in the medium channel 12 of the valve seat 8, and when the medium flows through the sealing groove 3 on the valve flap 6, the medium enters the sealing groove 3, because the effect of the medium pressure realizes independent sealing cavities in the two sealing grooves 3. When the valve flap 6 moves downwards to the state that the valve is closed, the direction of the medium flow is guided by the inclined guide surface of the valve flap 6 and cannot directly impact on the sealing surface. In this case, the sealing surface can be effectively protected. The valve clack 6 adopts a concave arc surface 4, the valve seat 8 adopts a convex arc surface 9, and the valve clacks are mutually ground to form arc sealing. When the valve is closed and pressed, the sealing surface is under the action of pressure, so that the valve can be effectively sealed.
When the valve is opened, the sealing surfaces of the valve clack 6 and the valve seat 8 are separated, the sealing groove 3 of the valve clack 6 inserted into the head 1 is not completely separated, and the sealing function can be realized, so that the circular arc sealing surfaces of the valve clack 6 and the valve seat 8 are not impacted by medium flow. And the abrasion and the flushing of the medium flowing at high speed can not happen when the valve is at a small opening degree. Ensuring that the sealing surface is not easily damaged under various medium flows. The service life of the sealing surface is effectively prolonged.
It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
Claims (5)
1. The utility model provides a many sealings of scour protection stop valve, includes valve body (11), is provided with disk seat (8) and valve rod (7) in valve body (11), is medium passageway (12) in disk seat (8), and valve rod (7) tip is provided with valve clack (6) that are used for sealing medium passageway (12) in disk seat (8), its characterized in that: a convex arc surface (9) is arranged at one end of the valve seat (8) matched with the valve clack (6), a concave arc surface (4) matched with the convex arc surface (9) is arranged on the valve clack (6), an insertion head (1) is arranged at the lower end of the valve clack (6) in an extending manner along the tangential direction of the concave arc surface (4), and the outer wall of the insertion head (1) is matched with the inner wall of the medium channel (12); an upward diversion inclined plane (5) is arranged above the concave arc surface (4).
2. The impact protection multi-seal shut-off valve of claim 1, wherein: the outer surface of the insertion head (1) is provided with a double-sealing ring groove.
3. The impact protection multi-seal shut-off valve of claim 1, wherein: an inclined plane anti-collision ring (10) is arranged on the upper surface of the valve seat (8).
4. The impact protection multi-seal shut-off valve of claim 1, wherein: the valve stem (7) may be a self-aligning valve stem (7).
5. The impact protection multi-seal shut-off valve of claim 1, wherein: the lower end of the insertion head (1) is provided with an insertion chamfer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080327.9U CN219327801U (en) | 2023-01-13 | 2023-01-13 | Anti-flushing multi-seal stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080327.9U CN219327801U (en) | 2023-01-13 | 2023-01-13 | Anti-flushing multi-seal stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219327801U true CN219327801U (en) | 2023-07-11 |
Family
ID=87064508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320080327.9U Active CN219327801U (en) | 2023-01-13 | 2023-01-13 | Anti-flushing multi-seal stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219327801U (en) |
-
2023
- 2023-01-13 CN CN202320080327.9U patent/CN219327801U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203335872U (en) | Secondary sealing stop valve | |
| CN101187427B (en) | Intelligent type high temperature high voltage leakage-free solenoid valve | |
| CN101205977A (en) | Double sealing high pressure needle valve | |
| CN219327801U (en) | Anti-flushing multi-seal stop valve | |
| CN213117571U (en) | Hard sealing fixed ball valve | |
| CN212251254U (en) | Ultra-low temperature ball valve | |
| CN109139938B (en) | Stop valve | |
| CN208010963U (en) | A kind of hard seal ball valve | |
| CN203614823U (en) | Ceramic seal rotary-opening and slowly-closing type check valve | |
| CN100470103C (en) | Forced sealing control valve | |
| CN211009967U (en) | Special ball valve for catalytic gasoline desulfurization adsorption device | |
| CN212839521U (en) | High-strength ball | |
| CN209762257U (en) | Multi-sealing compound valve | |
| CN210637552U (en) | One-way joint for deep hole drilling machine | |
| CN107842627B (en) | Hard seal ball valve | |
| CN208364807U (en) | A kind of valve dual sealing mechanism and the valve with dual sealing mechanism | |
| CN219081547U (en) | Drilling tool float valve | |
| CN216895789U (en) | Multiple sealed high stability stop valve | |
| CN210830725U (en) | Novel hard seal ball valve | |
| CN201100444Y (en) | Ball valve with metal hard sealing body valve base | |
| CN219888786U (en) | Axial sealing floating ball valve | |
| CN205479402U (en) | High life high pressure isolating valve | |
| CN220891088U (en) | Elastic metal sealing valve seat sleeve valve with buffer groove | |
| CN215214825U (en) | Double-sealing conical valve | |
| CN216112231U (en) | Double-seal butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |