CN214367781U - Composite sealing oxygen stop valve - Google Patents
Composite sealing oxygen stop valve Download PDFInfo
- Publication number
- CN214367781U CN214367781U CN202120375741.3U CN202120375741U CN214367781U CN 214367781 U CN214367781 U CN 214367781U CN 202120375741 U CN202120375741 U CN 202120375741U CN 214367781 U CN214367781 U CN 214367781U
- Authority
- CN
- China
- Prior art keywords
- valve
- cover
- clack
- valve clack
- face
- 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
The utility model relates to a composite sealing oxygen stop valve, which comprises a valve body, a valve clack, a valve rod, a valve cover, a bracket and a transmission mechanism, wherein a valve seat is arranged between the inlet and the outlet of the valve body; the method is characterized in that: the valve clack is a composite sealing structure formed by a main valve clack and an auxiliary valve clack, a dustproof oil-prohibiting cover is arranged between the upper end surface of the valve cover and a valve rod nut of the support, when the valve is opened, the auxiliary valve clack is lifted at first, the pressure difference of an inlet channel and an outlet channel of the valve body is reduced, the opening torque is reduced, the medium flow rate is reduced, and dust and oil stains are prevented from permeating into the valve cavity. The sealing device has the advantages of good sealing performance, small opening torque, good use safety, long service life and the like.
Description
Technical Field
The utility model belongs to the valve field, in particular to stop valve. The utility model is suitable for an oxygen medium pipeline control valve.
Background
The stop valve is composed of valve body, valve clack, valve rod, valve cover and drive mechanism, the valve seat is set between inlet and outlet of valve body, the sealing surface matched with valve seat is set on the lower end face of valve clack, the upper end face of valve clack is connected with lower end of valve rod, the upper end of valve rod is passed through valve cover and connected with drive mechanism fixedly mounted on the support, the drive mechanism drives valve rod to move up and down to drive valve clack and valve seat to open and close. The main disadvantages are: at the moment of opening and closing the valve clack, the flow velocity of fluid passing through the space between the valve clack and the valve seat is very high, so that the sealing surfaces of the valve clack and the valve seat are greatly washed, the sealing performance and the service life of a product are influenced, and the opening torque is large; in addition, external dust and oil stain easily permeate into the valve cavity from the space between the valve rod and the filler, so that oxygen medium pollution is caused, and safety accidents are caused.
Disclosure of Invention
The utility model discloses shortcoming to prior art exists provides a prevent that dust and oil stain pollute, sealing performance is good, opening moment is little, the compound seal oxygen stop valve that the safety in utilization is good, long service life.
The technical scheme of the utility model comprises a valve body, a valve clack, a valve rod, a valve cover, a bracket and a transmission mechanism, wherein a valve seat is arranged between an inlet and an outlet of the valve body, the upper end of the valve rod passes through the valve cover to be connected with the transmission mechanism fixedly arranged on the bracket, and a packing sealing device is arranged between the valve rod and the valve cover; the method is characterized in that: the valve clack is a composite sealing structure consisting of a main valve clack and an auxiliary valve clack, the lower end face of the main valve clack is provided with a sealing surface matched with a valve seat, the auxiliary valve clack is arranged in a cylindrical cavity at the center of the back face of the main valve clack by a valve clack cover, the bottom surface of the cylindrical cavity of the main valve clack is provided with an axial through hole communicated with an inlet channel of the valve body, the side wall of the cylindrical cavity is provided with a radial through hole communicated with an outlet channel of the valve body, the lower end face of the auxiliary valve clack is provided with a sealing surface matched with the bottom surface of the cylindrical cavity, the upper end face of the auxiliary valve clack is fixedly connected with the lower end of a valve rod, the outer circular surface of the valve clack cover is in threaded connection with the inner wall of the cylindrical cavity of the main valve clack, an axial space is arranged between the lower end face of the valve clack cover and the upper end face of the auxiliary valve clack cover, and when the upper end face of the auxiliary valve clack is lifted to be contacted with the lower end face of the valve clack cover, the lower end face of the radial through hole of the cylindrical cavity; set up dustproof forbidden oil cover between the valve rod nut of valve gap up end and support, this dustproof forbidden oil cover lower extreme seal installation is at the valve gap up end, upper end and the outer disc movable seal cooperation of valve rod.
In the technical scheme, the back of the auxiliary valve flap is provided with a guide cylinder, and the guide cylinder is movably matched with the inner hole wall of the valve flap cover.
In the technical scheme, the transmission mechanism consists of a hand wheel and a bevel gear, and the upper end of a bevel gear box body is provided with a dust cover.
Compared with the prior art, the utility model beneficial effect be: the valve clack is a composite sealing structure formed by a main valve clack and an auxiliary valve clack, a dustproof oil-prohibiting cover is arranged between the upper end surface of the valve cover and a valve rod nut of the support, when the valve is opened, the auxiliary valve clack is lifted at first, the pressure difference of an inlet channel and an outlet channel of the valve body is reduced, the opening torque is reduced, the medium flow rate is reduced, and dust and oil stains are prevented from permeating into the valve cavity. The sealing device has the advantages of good sealing performance, small opening torque, good use safety, long service life and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the valve comprises a valve body 1, a valve seat 2, a main valve clack 3, an auxiliary valve clack 4, a valve clack cover 5, a valve rod 6, a gasket 7, a valve cover 8, packing 9, a packing gland cover 10, a support 11, a valve rod nut 12, a bevel gear 13, a dust cover 14, a guide device 15, an oil-proof cover 16, bolts 17 and grounding bolts 18.
Detailed Description
As shown in fig. 1, the compound sealing oxygen stop valve comprises a valve body 1, a valve clack, a valve rod 6, a valve cover 8, a support 11 and a transmission mechanism, wherein a valve seat 2 is arranged between an inlet and an outlet of the valve body 1, the upper end of the valve rod 6 penetrates through the valve cover 8 to be connected with the transmission mechanism fixedly installed on the support 11, a packing 9 is arranged between the valve rod 6 and the valve cover 8, the packing 9 is tightly pressed and installed in a packing cavity of the valve cover 8 by a packing gland 10, a gasket 7 is arranged between the valve cover 8 and the valve body 1, a grounding bolt 18 is arranged on the valve body 1 to prevent static electricity, the lower end of the support 11 is fixedly installed at the upper end of the valve cover 8 by a bolt 17, and a guide device 15 is arranged between the valve rod 6 and the support 11 to prevent the valve rod 6 from rotating; the method is characterized in that: the valve clack is a composite sealing structure composed of a main valve clack 3 and an auxiliary valve clack 4, the lower end face of the main valve clack 3 is provided with a sealing surface matched with a valve seat 2, the auxiliary valve clack 4 is arranged in a cylindrical cavity at the center of the back face of the main valve clack 3 through a valve clack cover 5, the bottom surface of a cylindrical cavity of the main valve clack 3 is provided with an axial through hole communicated with an inlet channel of the valve body 1, the side wall of the cylindrical cavity is provided with a radial through hole communicated with an outlet channel of the valve body 1, an inlet channel medium of the valve body 1 can enter the cylindrical cavity from the axial through hole and then flows to the outlet channel through the radial through hole, the lower end face of the auxiliary valve clack 4 is provided with a sealing surface matched with the bottom surface of the cylindrical cavity, the upper end face of the auxiliary valve clack 4 is fixedly connected with the lower end of a valve rod 6, the outer circular surface of the valve clack cover 5 is connected with the inner wall of the cylindrical cavity of the main valve clack cover 3 through threads, an axial space is arranged between the lower end face of the auxiliary valve clack cover 5 and the upper end face of the auxiliary valve clack 4, when the upper end face of the auxiliary valve clack 4 rises to be contacted with the lower end face of the valve clack cover 5, the lower end face of the auxiliary valve clack 4 is positioned on the upper side of a radial through hole of the side wall of the cylindrical cavity, when the valve is opened, the valve rod 6 firstly pulls the auxiliary valve clack 4 to lift in the cylindrical cavity, so that the medium pressure at the inlet of the valve body 1 is released through the radial through hole, the medium pressure difference of the inlet and outlet channels of the valve body 1 is reduced, then the main valve clack 3 is driven to rise to open the valve, the scouring of the medium to a sealing surface is reduced, the sealing performance is improved, and the opening torque is reduced; a dustproof oil-prohibiting cover 16 is arranged between the upper end face of the valve cover 8 and the valve rod nut 12 on the support 11, the lower end of the dustproof oil-prohibiting cover 16 is hermetically installed on the upper end face of the valve cover 8, the upper end of the dustproof oil-prohibiting cover is in dynamic sealing fit with the outer circular face of the valve rod 6, external dust and oil stains are prevented from permeating into the valve cavity along the outer circular face of the valve rod 6, and oxygen is prevented from being polluted to generate safety accidents.
The back of the auxiliary valve clack 4 is provided with a guide cylinder, the outer cylindrical surface of the guide cylinder is movably matched with the inner hole wall of the valve clack cover 5, and the lower end of the valve rod 6 is fixedly connected with the inner hole of the guide cylinder.
The transmission mechanism consists of a hand wheel and a bevel gear 13, and a dust cover 14 is arranged at the upper end of a box body of the bevel gear 13 to prevent dust from entering the gear box.
Claims (3)
1. A composite sealing oxygen stop valve comprises a valve body (1), a valve clack, a valve rod (6), a valve cover (8), a support (11) and a transmission mechanism, wherein a valve seat (2) is arranged between an inlet and an outlet of the valve body (1), the upper end of the valve rod (6) penetrates through the valve cover (8) to be connected with the transmission mechanism fixedly installed on the support (11), and a filler (9) is arranged between the valve rod (6) and the valve cover (8); the method is characterized in that: the valve clack is a composite sealing structure consisting of a main valve clack (3) and an auxiliary valve clack (4), the lower end face of the main valve clack (3) is provided with a sealing surface which is matched with a valve seat (2), the auxiliary valve clack (4) is arranged in a cylindrical cavity at the center of the back of the main valve clack (3) by a valve clack cover (5), the bottom surface of the cylindrical cavity of the main valve clack (3) is provided with an axial through hole which is communicated with an inlet channel of a valve body (1), the side wall of the cylindrical cavity is provided with a radial through hole which is communicated with an outlet channel of the valve body (1), the lower end face of the auxiliary valve clack (4) is provided with a sealing surface which is matched with the bottom surface of the cylindrical cavity, the upper end face of the auxiliary valve clack (4) is fixedly connected with the lower end of a valve rod (6), the outer circular surface of the valve clack cover (5) and the inner wall of the cylindrical cavity of the main valve clack (3) are connected with each other by screw threads, an axial space is arranged between the lower end face of the valve clack cover (5) and the auxiliary valve clack cover (4), when the upper end face of the auxiliary valve clack (4) rises to be contacted with the lower end face of the valve clack cover (5), the lower end face of the auxiliary valve clack (4) is positioned on the upper side of the radial through hole of the side wall of the cylindrical cavity; set up dustproof oil forbidden cover (16) between valve rod nut (12) on valve gap (8) up end and support (11), this dustproof oil forbidden cover (16) lower extreme sealing installation is in valve gap (8) up end, the outer disc movive seal cooperation of upper end and valve rod (6).
2. The compound seal oxygen stop valve of claim 1, wherein: the back of the auxiliary valve clack (4) is provided with a guide cylinder, and the outer cylindrical surface of the guide cylinder is movably matched with the inner hole wall of the valve clack cover (5).
3. A compound seal oxygen shut-off valve according to claim 1 or 2, characterized in that: the transmission mechanism consists of a hand wheel and a bevel gear (13), and the upper end of the box body of the bevel gear (13) is provided with a dust cover (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375741.3U CN214367781U (en) | 2021-02-19 | 2021-02-19 | Composite sealing oxygen stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375741.3U CN214367781U (en) | 2021-02-19 | 2021-02-19 | Composite sealing oxygen stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367781U true CN214367781U (en) | 2021-10-08 |
Family
ID=77965656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120375741.3U Active CN214367781U (en) | 2021-02-19 | 2021-02-19 | Composite sealing oxygen stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214367781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658865A (en) * | 2022-01-17 | 2022-06-24 | 方正阀门集团股份有限公司 | Anti-blocking low-torque guide stop valve |
-
2021
- 2021-02-19 CN CN202120375741.3U patent/CN214367781U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658865A (en) * | 2022-01-17 | 2022-06-24 | 方正阀门集团股份有限公司 | Anti-blocking low-torque guide stop valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214367781U (en) | Composite sealing oxygen stop valve | |
| CN111720569A (en) | Flat gate valve | |
| CN210600231U (en) | Non-rising stem flat valve without flange and bolted connection valve cover structure | |
| CN203477326U (en) | Diaphragm mud valve | |
| CN203336001U (en) | Hydraulic drive flat valve with manually-closing device | |
| CN103423506B (en) | A kind of many gyration type hydraulic operated valves | |
| CN202531948U (en) | Novel flange gate valve | |
| CN214368142U (en) | Special stop valve for oxygen | |
| CN210661437U (en) | High-performance expansion gate valve with inverted sealing function | |
| CN210661421U (en) | Hard-sealing zero-leakage knife gate valve with valve cover | |
| CN203421197U (en) | Built-in rod type dedicated valve for opening pipeline plug | |
| CN203131074U (en) | Wedge gate valve | |
| CN211924901U (en) | Self-sealing stop valve | |
| CN111022679A (en) | Knife gate valve with combined type middle cavity sealing ring | |
| CN214367816U (en) | Special butterfly valve for oxygen | |
| CN215720938U (en) | Improved double-acting stop valve | |
| CN220185858U (en) | Bellows lining stop valve | |
| CN217633880U (en) | Prevent flow valve of leakage | |
| CN206655973U (en) | Parallel sliding double-flashboard gate valve | |
| CN212055881U (en) | Butterfly valve with automatic sealing function | |
| CN212056026U (en) | Split guide direct-flow stop valve | |
| CN205136646U (en) | Rust -resistant dark pole wedge gate valve that loses is simplified to structure | |
| CN214093075U (en) | Lengthened corrugated pipe sealing stop valve | |
| CN213871383U (en) | High-stability double-layer corrugated pipe stop valve | |
| CN202992207U (en) | Inward-expanding disc type regulation line pipe angle valve capable of being regulated, opened and closed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |