CN214662167U - Pneumatic oxygen flow regulating valve - Google Patents
Pneumatic oxygen flow regulating valve Download PDFInfo
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- CN214662167U CN214662167U CN202120375708.0U CN202120375708U CN214662167U CN 214662167 U CN214662167 U CN 214662167U CN 202120375708 U CN202120375708 U CN 202120375708U CN 214662167 U CN214662167 U CN 214662167U
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- valve plug
- sealing
- flow regulating
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Abstract
The utility model relates to a pneumatic oxygen flow control valve, including valve body, valve gap, valve rod, pneumatic actuator and flow control assembly, flow control assembly adopts sleeve and valve plug to constitute, utilizes the sealing face of the outer disc of valve plug and sleeve hole movable seal cooperation to constitute sealed vice, by the valve plug at the removal altitude mixture control oxygen flow of sleeve hole, under the open mode, the sealing face of valve plug deviates from the fluid direction, has avoided the medium to directly erode the sealing face of valve plug, its flow control precision is high, sealing performance is good, product long service life. The flow control valve is suitable for oxygen, nitrogen and natural gas pipelines.
Description
Technical Field
The utility model belongs to the valve field, in particular to oxygen regulating valve. The utility model is suitable for a flow control valve of oxygen pipeline.
Background
At present, the oxygen flow regulating valve generally adopts a stop valve structure, and the opening height of a valve clack is utilized to control the outlet flow of a valve body, so that the oxygen flow is regulated. The valve flap sealing surface is washed by a medium for a long time, the sealing surface is easy to damage, the adjusting precision is low, the sealing performance is poor, and the service life is short.
Disclosure of Invention
The utility model discloses to the shortcoming that prior art exists, provide a pneumatic oxygen flow control valve who adjusts the precision height, sealing performance is good, long service life.
The technical scheme of the utility model comprises a valve body, a valve cover, a valve rod, a pneumatic actuator and a flow regulating assembly, wherein the valve body adopts a lower inlet and upper outlet structure, a passage platform is arranged between a valve cavity at the inlet side and a valve cavity at the outlet side of the valve body, the passage platform is provided with a through hole, a medium flows from the inlet valve cavity to the outlet valve cavity through the through hole, a packing sealing device is arranged between the valve cover and the valve rod, and the middle cavity is sealed; the method is characterized in that: the flow regulating assembly consists of a sleeve and a valve plug, the sleeve is pressed between the valve cover and the channel platform, the upper end surface and the lower end surface of the sleeve are respectively and hermetically installed with the valve cover and the channel platform, and a plurality of radial holes for communicating an inner hole of the sleeve with the valve cavity at the outlet side are formed in the circumferential direction of the side wall of the sleeve; the upper end surface of the valve plug is fixedly connected with the lower end of the valve rod, the outer circular surface is in dynamic sealing fit with the inner circular surface of the sleeve, the valve rod drives the valve plug to move up and down in the sleeve, the opening and closing control or flow regulation of an oxygen pipeline medium is realized, the stability of the valve plug moving in the sleeve is good, the flow regulation precision is high, meanwhile, the sealing surface of the valve plug deviates from the medium flowing direction when the valve plug is opened, the scouring of the medium on the sealing surface of the valve plug is avoided, the sealing performance of a sealing pair is improved, and the service life of a product is prolonged; the oil prohibiting tank is fixedly installed on the valve cover outside the packing sealing device in a sealing mode, oil stains are prevented from entering the inner cavity of the valve body along the valve rod, and the pneumatic actuator is fixedly installed on the upper end face of the oil prohibiting tank.
In the technical scheme, the wall of the inner hole of the sleeve at the lower side of the radial hole is provided with a conical sealing seat, and the lower end of the valve plug is provided with a conical sealing surface matched with the conical sealing seat on the wall of the inner hole of the sleeve.
In the technical scheme, the oil forbidden box is made of transparent toughened glass materials, and an opening indicating device is arranged between the side wall of the inner cavity of the oil forbidden box and the valve rod.
In the technical scheme, the upper end face of the valve plug is fixedly connected with the lower end of the valve rod in a sealing mode, the valve plug forms a middle cavity double seal when closed, an axial pressure balancing groove is formed between the inner hole wall of the sleeve on the upper side of the radial hole and the outer circular surface of the valve plug, and the pressure of the upper cavity and the lower cavity of the valve plug is balanced in the opening and closing process.
Compared with the prior art, the utility model beneficial effect be: flow control assembly adopts sleeve and valve plug to constitute, utilizes the sealed face of the outer disc of valve plug and sleeve hole movive seal cooperation to constitute sealed vice, by the valve plug at the high regulation oxygen flow of removal of sleeve hole, under the open mode, the sealed face of valve plug deviates from the fluid direction, has avoided the medium to directly erode the sealed face of valve plug, and its flow control precision is high, sealing performance is good, product long service life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The valve comprises a valve body 1, a gasket 2, a sleeve 3, a valve plug 4, a nut 5, a sealing gasket 6, a gasket 7, a valve rod 8, a valve cover 9, a filler 10, a pressing sleeve 11, a pressing plate 12, a pneumatic actuator 13, an opening degree indicating device 14, an oil forbidden tank 15 and a radial hole 16.
Detailed Description
The pneumatic oxygen flow regulating valve shown in fig. 1 comprises a valve body 1, a valve cover 9, a valve rod 8, a pneumatic actuator 13 and a flow regulating assembly, wherein the valve body 1 adopts a downward-in-upward-out structure, a passage platform is arranged between a valve cavity at the inlet side and a valve cavity at the outlet side of the valve body 1, the passage platform is provided with a through hole, a medium flows from the inlet valve cavity to the outlet valve cavity through the through hole, a packing sealing device is arranged between the valve cover 9 and the valve rod 8, and the packing sealing device consists of a packing 10, a pressing sleeve 11 and a pressing plate 12 and realizes the sealing of a middle cavity; the method is characterized in that: the flow regulating assembly consists of a sleeve 3 and a valve plug 4, the sleeve 3 is pressed between a valve cover 9 and a channel platform, the upper end surface and the lower end surface of the sleeve 3 are respectively in sealing installation with the valve cover 9 and the channel platform, a gasket 2 is arranged between the lower end of the sleeve 3 and the channel platform, the upper end of the sleeve 3 is pressed between a valve body 1 and the valve cover 9 through an outer convex shoulder of the outer circular surface, a sealing gasket 6 is arranged between the lower annular surface of the outer convex shoulder and the valve body 1, a gasket 7 is arranged between the upper annular surface of the outer convex shoulder and the valve cover 9, and a plurality of radial holes 16 communicating an inner hole of the sleeve 3 with a valve cavity at an outlet side are formed in the circumferential direction of the side wall of the sleeve 3; the upper end face of the valve plug 4 is fixedly connected with the lower end of a valve rod 8, the outer circular surface is matched with an inner hole of a sleeve 3 in a dynamic sealing manner, the valve plug 4 is fixedly installed at the lower end of the valve rod 8 through a nut 5, the valve rod 8 drives the valve plug 4 to move up and down in the sleeve 3, the opening and closing control or flow regulation of an oxygen pipeline medium is realized, the movement stability of the valve plug 4 is good, the flow regulation precision is high, meanwhile, the sealing surface of the valve plug 4 deviates from the medium flow direction when the valve plug 4 is opened, the flushing of the sealing surface of the valve plug by the medium is avoided, the sealing performance of a sealing pair and the service life of a product are improved, an axial limiting convex shoulder which is matched with each other is arranged between the inner hole of the sleeve 3 at the upper side of a radial hole 16 and the outer circular surface of the valve plug 4, and consists of an inner step of the inner hole of the sleeve 3 and a radial outer convex shoulder of the outer circular surface of the valve plug 4, and limits the downward movement of the valve plug 4; the oil prohibiting tank 15 is fixedly installed on the valve cover 9 outside the packing sealing device in a sealing mode, oil stains are prevented from entering the inner cavity of the valve body 1 along the valve rod 8, and the pneumatic actuator 13 is fixedly installed on the upper end face of the oil prohibiting tank 15.
The inner hole wall of the sleeve 3 at the lower side of the radial hole 16 is provided with a conical sealing seat, and the lower end of the valve plug 4 is provided with a conical sealing surface matched with the conical sealing seat on the inner hole wall of the sleeve 3.
The oil forbidden tank 15 is made of transparent toughened glass materials, and an opening indicating device 14 is arranged between the side wall of the inner cavity of the oil forbidden tank 15 and the valve rod 8 and directly displays the opening of the valve.
The upper end face of the valve plug 4 is fixedly connected with the lower end of the valve rod 8 in a sealing mode, the valve plug 4 forms a middle cavity double seal when being closed, an axial pressure balancing groove is formed between the inner hole wall of the sleeve 3 on the upper side of the radial hole 16 and the outer circular surface of the valve plug 4, and the pressure of the upper cavity and the lower cavity of the valve plug 4 is balanced in the opening and closing process.
Claims (5)
1. A pneumatic oxygen flow regulating valve comprises a valve body (1), a valve cover (9), a valve rod (8), a pneumatic actuator (13) and a flow regulating assembly, wherein the valve body (1) adopts a downward-in-upward-out structure, a passage platform is arranged between a valve cavity at the inlet side and a valve cavity at the outlet side of the valve body (1), and a packing sealing device is arranged between the valve cover (9) and the valve rod (8); the method is characterized in that: the flow regulating assembly consists of a sleeve (3) and a valve plug (4), the sleeve (3) is pressed between the valve cover (9) and the channel platform, the upper end surface and the lower end surface of the sleeve are respectively connected with the valve cover (9) and the channel platform in a sealing way, and a plurality of radial holes (16) for communicating an inner hole of the sleeve (3) with a valve cavity at an outlet side are formed in the circumferential direction of the side wall of the sleeve (3); the upper end surface of the valve plug (4) is fixedly connected with the lower end of the valve rod (8), the outer circular surface is in dynamic sealing fit with the inner hole of the sleeve (3), and an axial limiting convex shoulder which is matched with the inner hole of the sleeve (3) on the upper side of the radial hole (16) and the outer circular surface of the valve plug (4) is arranged between the inner hole of the sleeve (3) and the outer circular surface of the valve plug (4); an oil prohibiting tank (15) is fixedly installed on the valve cover (9) outside the packing sealing device in a sealing mode, and a pneumatic actuator (13) is fixedly installed on the upper end face of the oil prohibiting tank (15).
2. The pneumatic oxygen flow regulating valve of claim 1, wherein: the inner hole wall of the sleeve (3) at the lower side of the radial hole (16) is provided with a conical sealing seat, and the lower end of the valve plug (4) is provided with a conical sealing surface which is mutually matched with the conical sealing seat on the inner hole wall of the sleeve (3).
3. A pneumatic oxygen flow regulating valve according to claim 1 or 2, wherein: the oil forbidden tank (15) is made of transparent toughened glass materials, and an opening degree indicating device (14) is arranged between the side wall of the inner cavity of the oil forbidden tank (15) and the valve rod (8).
4. A pneumatic oxygen flow regulating valve according to claim 1 or 2, wherein: the upper end face of the valve plug (4) is fixedly connected with the lower end of the valve rod (8) in a sealing mode, and an axial pressure balance groove is formed between the inner hole wall of the sleeve (3) on the upper side of the radial hole (16) and the outer circular face of the valve plug (4).
5. The pneumatic oxygen flow regulating valve of claim 3, wherein: the upper end face of the valve plug (4) is fixedly connected with the lower end of the valve rod (8) in a sealing mode, and an axial pressure balance groove is formed between the inner hole wall of the sleeve (3) on the upper side of the radial hole (16) and the outer circular face of the valve plug (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375708.0U CN214662167U (en) | 2021-02-19 | 2021-02-19 | Pneumatic oxygen flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375708.0U CN214662167U (en) | 2021-02-19 | 2021-02-19 | Pneumatic oxygen flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214662167U true CN214662167U (en) | 2021-11-09 |
Family
ID=78447879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120375708.0U Active CN214662167U (en) | 2021-02-19 | 2021-02-19 | Pneumatic oxygen flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214662167U (en) |
-
2021
- 2021-02-19 CN CN202120375708.0U patent/CN214662167U/en active Active
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