CN211010021U - Axial flow type check valve - Google Patents
Axial flow type check valve Download PDFInfo
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- CN211010021U CN211010021U CN201921250647.4U CN201921250647U CN211010021U CN 211010021 U CN211010021 U CN 211010021U CN 201921250647 U CN201921250647 U CN 201921250647U CN 211010021 U CN211010021 U CN 211010021U
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- valve
- valve body
- clack
- axial flow
- guide sleeve
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Abstract
The utility model relates to an axial-flow check valve belongs to thermoelectricity, nuclear power, petrochemical industry valve field. The axial flow type check valve is installed on a pipeline of a unit or a device and is important equipment for preventing a medium from flowing backwards. The axial flow check valve comprises a left valve body, a right valve body, a valve clack, a spring energy storage ring, a metal O-shaped ring and the like, wherein the left valve body and the right valve body are sealed by the metal O-shaped ring and the spring energy storage ring and are connected by a bolt. The left valve body is internally provided with a guide sleeve, the right valve body is internally provided with a guide rib, the guide sleeve and the guide rib jointly bear the guide function of the valve clack, the back cavity of the valve clack is provided with a spring, and when the valve is opened and closed, the valve clack makes reciprocating linear motion in the guide sleeve. The utility model discloses can guarantee that the valve clack action is smooth and easy, avoid taking place the bite phenomenon, improve valve action reliability.
Description
Technical Field
The utility model relates to an axial-flow check valve belongs to thermoelectricity, nuclear power, petrochemical industry valve field.
Background
The axial flow type check valve is installed on pipelines of thermal power units, nuclear power units and petrochemical devices, and is important equipment for preventing media from flowing backwards.
At present, most of axial flow check valves adopt integral valve bodies, and valve parts are difficult to disassemble. The valve clack of axial-flow check valve adopts the valve rod that links to each other with the valve clack to lead mostly, nevertheless because the valve clack is heavier, and the valve rod of direction is thinner, and the valve is opened and close the very easy fish tail of in-process spigot surface, produces the jam phenomenon, influences valve action reliability.
Disclosure of Invention
To the technical problem, the utility model aims at providing an axial-flow check valve, the valve is opened and close the in-process and is moved reliably.
In order to achieve the purpose, the utility model provides an axial-flow check valve, it mainly includes left valve body (1), right valve body (9), spring (6), valve clack (7), bolt (4).
A guide sleeve (3) is arranged in a left valve body (1) of the axial flow type check valve, and a streamline flow passage with the same area is formed among the guide sleeve (3), the left valve body (1) and a right valve body (9), so that smooth medium flow and small resistance are ensured; the left valve body (1) and the right valve body (9) are connected by bolts, and are sealed by a metal O-shaped ring and a spring energy storage ring. 3-4 guide ribs (10) are uniformly distributed in the right valve body (9) along the circumferential direction, and Stellite alloy with the thickness not less than 3mm is deposited on the inner diameter surface of each guide rib (10). The guide rib (10) and the guide sleeve (3) of the left valve body (1) share the guide function of the valve clack (7), the inner hole of the guide sleeve (3) is hardened, and the valve clack (7) performs reciprocating linear motion in the guide sleeve (3) when the valve is opened and closed.
A spring (6) is arranged in a guide sleeve (3) of the axial flow type check valve, and an auxiliary valve clack (7) is closed; the back of the guide sleeve (3) is provided with a water inlet hole (2), when a medium flows back, the medium enters a back cavity of the valve clack (7) through the water inlet hole (2), and the valve clack (7) is pushed to close by medium force.
The sealing surface of the valve seat (8) is directly welded in a right valve body (9) of the axial flow type check valve in a surfacing mode, and the material of the sealing surface is cobalt-based hard alloy (namely Stellite alloy).
The utility model has the advantages that: when the valve is opened and closed, the valve clack moves in the guide sleeve and the guide rib, the valve clack moves smoothly, the phenomenon of jamming is avoided, and the reliability of the valve action is improved.
Drawings
FIG. 1 is a schematic view of an axial flow check valve
FIG. 2 is a schematic view of a sealing structure of left and right valve bodies
FIG. 3 is a schematic structural view of a right valve body
In the figure, 1, a left valve body, 2, a water inlet hole, 3, a guide sleeve, 4, a bolt, 5, a nut, 6, a spring, 7, a valve clack, 8, a valve seat, 9, a right valve body, 10, a guide rib, 11, a spring energy storage ring and 12, a metal O-shaped ring
Detailed Description
In the embodiment shown in fig. 1, fig. 2, and fig. 3, the utility model provides an axial-flow check valve mainly comprises left valve body (1), right valve body (9), spring (6), valve clack (7), valve seat (8), bolt (4), spring energy storage ring (11), metal O shape circle (12) etc.. The left valve body (1) and the right valve body (9) are sealed by a metal O-shaped ring and a spring energy storage ring and are connected by bolts and nuts.
A guide sleeve (3) is arranged in a left valve body (1) of the axial flow type check valve, and the left valve body (1) and the guide sleeve (3) are integrally cast or connected into a whole by welding; a streamline flow channel with the same area is formed between the guide sleeve (3) and the left valve body (1) and the right valve body (9), so that smooth medium flowing is ensured, and the resistance is small. 3-4 guide ribs (10) are uniformly distributed in the right valve body (9) along the circumferential direction, and Stellite alloy with the thickness not less than 3mm is deposited on the inner diameter surface of each guide rib (10). The guide rib (10) and the guide sleeve (3) of the left valve body (1) share the guide function of the valve clack (7), and the inner hole of the guide sleeve (12) is hardened to ensure wear resistance and scratch resistance. When the valve is opened and closed, the valve clack (7) is guided by the guide sleeve (12) and the guide rib (10), and the valve clack (7) reciprocates linearly in the guide sleeve (12).
A spring (6) is arranged in a guide sleeve (3) of the axial flow type check valve, the spring (6) acts on the back of the valve clack (7), and the auxiliary valve clack (7) is closed; the back of the guide sleeve (3) is provided with a water inlet hole (2), when a medium flows back, the medium enters a back cavity of the valve clack (7) through the water inlet hole (2), and the medium force and the spring force jointly push the valve clack (7) to close. When the valve works normally, the medium pushes the valve clack (7) to compress the spring (6) to open, and the medium in the back cavity of the valve clack (7) is discharged from the water inlet hole (2).
The sealing surface of the valve seat (8) is directly welded in a right valve body (9) of the axial flow type check valve in a surfacing mode, and the sealing surface is made of cobalt-based hard alloy (namely Stellite alloy) and is wear-resistant, scratch-resistant and erosion-resistant.
Claims (3)
1. An axial flow check valve characterized by: the valve mainly comprises a left valve body (1), a right valve body (9), a spring (6), a valve clack (7), a valve seat (8) and a bolt (4); the left valve body (1) and the right valve body (9) are connected by a bolt (4).
2. The axial flow check valve of claim 1, wherein: a guide sleeve (3) is arranged in the left valve body (1), 3-4 guide ribs are uniformly distributed in the right valve body (9) along the circumferential direction, and Stellite (Stellite) alloy with the thickness of not less than 3mm is deposited on the inner diameter surface of each guide rib.
3. The axial flow check valve of claim 1, wherein: a metal O-shaped ring and a spring energy storage ring are arranged between the left valve body (1) and the right valve body (9) for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921250647.4U CN211010021U (en) | 2019-07-27 | 2019-07-27 | Axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921250647.4U CN211010021U (en) | 2019-07-27 | 2019-07-27 | Axial flow type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211010021U true CN211010021U (en) | 2020-07-14 |
Family
ID=71472500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921250647.4U Active CN211010021U (en) | 2019-07-27 | 2019-07-27 | Axial flow type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211010021U (en) |
-
2019
- 2019-07-27 CN CN201921250647.4U patent/CN211010021U/en active Active
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