CN213575743U - Axial flow type check valve with blow-out prevention composite seal for valve seat - Google Patents
Axial flow type check valve with blow-out prevention composite seal for valve seat Download PDFInfo
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- CN213575743U CN213575743U CN202022430918.3U CN202022430918U CN213575743U CN 213575743 U CN213575743 U CN 213575743U CN 202022430918 U CN202022430918 U CN 202022430918U CN 213575743 U CN213575743 U CN 213575743U
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Abstract
A composite sealing axial flow check valve with an anti-blowout valve seat. The method is characterized in that: an annular groove is formed on the metal sealing surface of the valve seat, and barbs are formed on the inner wall of the annular groove; the side wall of the soft sealing ring is provided with a clamping groove, the soft sealing ring is arranged in the annular groove, and one end of the soft sealing ring is higher than the metal sealing surface to form a sealing contact surface through the barb limiting fit of the clamping groove and the annular groove. The advantages are that: 1. the metal and nonmetal composite sealing is adopted, when the medium pressure is low, the valve clack and the soft sealing ring form soft sealing, when the medium pressure is high, the soft sealing ring is pressed to be flat, the valve clack can be in contact with a metal sealing surface to form metal sealing, the soft and hard composite sealing is realized, the application pressure range is wide, and the sealing effect is good; 2. the soft sealing ring has certain elasticity, so that the impact of the valve clack on the valve seat can be reduced, and the service life is prolonged; 3. the soft sealing ring is limited by the clamping groove and the barb, and is prevented from being blown out and stable in structure.
Description
Technical Field
The utility model relates to an axial-flow check valve, concretely relates to disk seat prevents blowing off compound seal axial-flow check valve.
Background
In an industrial pipeline, in order to prevent a pipeline medium from flowing backwards to cause damage to a power pump, a check valve is often designed and installed at an outlet of the pump, so that the medium can only flow towards one direction, and the check valve is divided into an axial flow type, a swing type, a butterfly type, a double-flap type and the like. The axial flow type check valve is in a streamline shape which is symmetrically arranged, the movement mode is linear movement along the axial line, and the axial flow type check valve has the characteristics of stable operation, small flow resistance, good flow state, quick response to medium change and low noise.
In order to improve sealing performance, current axial-flow check valve sets up to the composite seal of soft or hard combination, imbeds soft sealing ring in the metal seal face, but in high pressure environment, the soft sealing ring receives the medium easily to erode the back, is blown out easily to lead to the problem that sealing failure revealed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of background art, the utility model provides a compound sealed axial flow type check valve is prevented blowing off by disk seat.
The utility model discloses the technical scheme who adopts: a valve seat blowout prevention composite sealing axial flow type check valve comprises a valve body, a valve rod, a valve clack and a valve seat, wherein a flow guide body is arranged in the valve body, the valve rod is in sliding fit with the flow guide body, the valve clack is installed at one end of the valve rod, and a return spring is arranged between the valve clack and the flow guide body; the valve seat is fixedly arranged in the valve body, a metal sealing surface corresponding to the valve clack is formed on the valve seat, an annular groove is formed on the metal sealing surface, and barbs are formed on the inner wall of the annular groove; still include soft sealing ring, soft sealing ring side wall is formed with the draw-in groove with the barb adaptation, soft sealing ring sets up in the annular groove to through the spacing cooperation of the barb of draw-in groove and annular groove, soft sealing ring one end exceeds the metal seal face and forms sealed contact surface.
The contact surface is in a sawtooth shape.
The guide body is internally provided with a guide sleeve, and the valve rod is positioned in the guide sleeve and matched with the guide sleeve in a sliding manner.
And a diversion sleeve cock is arranged at the tail end of the diversion body.
The middle of valve clack is equipped with the mounting groove, valve rod one end inserts in the mounting groove to through holding screw and valve clack fixed connection.
The valve seat is fixedly arranged in the valve body through a set screw.
And a lifting lug is arranged above the valve body.
The utility model has the advantages that: 1. the metal and nonmetal composite sealing is adopted, when the medium pressure is low, the valve clack and the soft sealing ring form soft sealing, when the medium pressure is high, the soft sealing ring is pressed to be flat, the valve clack can be in contact with a metal sealing surface to form metal sealing, the soft and hard composite sealing is realized, the application pressure range is wide, and the sealing effect is good; 2. the soft sealing ring has certain elasticity, so that the impact of the valve clack on the valve seat can be reduced, and the service life is prolonged; 3. the soft sealing ring is limited by the clamping groove and the barb, and is prevented from being blown out and stable in structure.
Drawings
Fig. 1 is the utility model discloses the structural schematic diagram of the axial-flow type check valve of compound seal is prevented blowing off by the valve seat.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is an enlarged schematic view of fig. 2 at B.
Fig. 4 is a schematic structural diagram of the annular groove according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, the composite sealing axial-flow check valve with the blowout prevention valve seat comprises a valve body 1, a valve rod 2, a valve clack 3, a valve seat 4, a return spring 6 and a soft sealing ring 7.
The flow guide device is characterized in that a flow guide body 5 is arranged in the valve body 1, a flow passage is formed between the flow guide body 5 and the inner wall of the valve body 1, a guide sleeve 51 is arranged in the flow guide body 5, a guide sleeve cock 52 is arranged at the tail end of the flow guide body 5, and a medium can pass through the flow passage under the guide guiding action of the flow guide body 5. A lifting lug 11 is arranged above the valve body 1, and the valve body is convenient to mount through the lifting lug 11.
One end of the valve rod 2 is positioned in the guide sleeve 51 and is in sliding fit with the guide sleeve 51, and the other end of the valve rod is provided with the valve clack 3. Wherein, the centre of valve clack 3 is equipped with mounting groove 31, 2 one ends of valve rod are inserted in mounting groove 31 to through holding screw and 3 fixed connection of valve clack, simple to operate. The return spring 6 is arranged between the valve clack 3 and the flow guiding body 5 and can drive the valve clack 3 to move towards the valve seat 4.
The valve seat 4 is fixedly installed in the valve body 1 through a set screw, a metal sealing surface 41 corresponding to the valve clack 3 is formed on the valve seat 4, and the valve clack 3 can be in contact with the metal sealing surface 41 of the valve seat 4 under the action of a medium to form a metal hard seal.
An annular groove 42 is formed on the metal sealing surface 41, and barbs 43 are formed on the inner wall of the annular groove 42; be provided with soft sealing ring 7 in the annular groove 42, soft sealing ring 7 lateral wall is formed with the draw-in groove 71 with barb 43 adaptation, soft sealing ring 7 passes through draw-in groove 71 and annular groove 42's barb 43 spacing cooperation, just soft sealing ring 7 one end exceeds metal seal face 41 and forms sealed contact surface 72, valve clack 3 can form nonmetal soft sealedly with the sealed contact surface 72 contact of soft sealing ring 7 under the effect of medium.
The sealing contact surface 72 is serrated, so that the deformation effect is better, and the sealing specific pressure can be established only by small pressure to realize sealing.
By adopting the scheme, the method has the following advantages: 1. the metal and nonmetal composite sealing is adopted, when the medium pressure is low, the valve clack and the soft sealing ring form soft sealing, when the medium pressure is high, the soft sealing ring is pressed to be flat, the valve clack can be in contact with a metal sealing surface to form metal sealing, the soft and hard composite sealing is realized, the application pressure range is wide, and the sealing effect is good;
2. the soft sealing ring has certain elasticity, so that the impact of the valve clack on the valve seat can be reduced, and the service life is prolonged;
3. the soft sealing ring is limited by the clamping groove and the barb, and is prevented from being blown out and stable in structure.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Claims (7)
1. A blowout prevention composite sealing axial-flow type check valve of a valve seat comprises a valve body (1), a valve rod (2), a valve clack (3) and a valve seat (4), wherein a flow guide body (5) is arranged in the valve body (1), the valve rod (2) is in sliding fit with the flow guide body (5), the valve clack (3) is installed at one end of the valve rod (2), and a reset spring (6) is arranged between the valve clack (3) and the flow guide body (5);
the method is characterized in that: the valve seat (4) is fixedly arranged in the valve body (1), a metal sealing surface (41) corresponding to the valve clack (3) is formed on the valve seat (4), an annular groove (42) is formed on the metal sealing surface (41), and a barb (43) is formed on the inner wall of the annular groove (42);
still include soft sealing ring (7), soft sealing ring (7) lateral wall is formed with draw-in groove (71) with barb (43) adaptation, soft sealing ring (7) set up in annular groove (42) to barb (43) spacing cooperation through draw-in groove (71) and annular groove (42), soft sealing ring (7) one end exceeds metal seal face (41) and forms sealing contact face (72).
2. The seat blowout prevention compound seal axial flow check valve of claim 1, wherein: the seal contact surface (72) is serrated.
3. The seat blowout prevention compound seal axial flow check valve of claim 1, wherein: be equipped with uide bushing (51) in baffle (5), valve rod (2) are located uide bushing (51) and slide fit with uide bushing (51).
4. The seat blowout prevention compound seal axial flow check valve of claim 3, wherein: the tail end of the flow guide body (5) is provided with a flow guide sleeve cock (52).
5. The seat blowout prevention compound seal axial flow check valve of claim 1, wherein: the middle of valve clack (3) is equipped with mounting groove (31), valve rod (2) one end is inserted in mounting groove (31) to through holding screw and valve clack (3) fixed connection.
6. The seat blowout prevention compound seal axial flow check valve of claim 1, wherein: the valve seat (4) is fixedly arranged in the valve body (1) through a set screw.
7. The seat blowout prevention compound seal axial flow check valve of claim 1, wherein: a lifting lug (11) is arranged above the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022430918.3U CN213575743U (en) | 2020-10-28 | 2020-10-28 | Axial flow type check valve with blow-out prevention composite seal for valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022430918.3U CN213575743U (en) | 2020-10-28 | 2020-10-28 | Axial flow type check valve with blow-out prevention composite seal for valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213575743U true CN213575743U (en) | 2021-06-29 |
Family
ID=76531727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022430918.3U Active CN213575743U (en) | 2020-10-28 | 2020-10-28 | Axial flow type check valve with blow-out prevention composite seal for valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213575743U (en) |
-
2020
- 2020-10-28 CN CN202022430918.3U patent/CN213575743U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An axial flow check valve with valve seat anti blow out composite seal Effective date of registration: 20220715 Granted publication date: 20210629 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Wenzhou Lucheng Tengqiao small and micro franchise sub branch Pledgor: KCM VALVE Co.,Ltd. Registration number: Y2022330001415 |