CN214367816U - Special butterfly valve for oxygen - Google Patents
Special butterfly valve for oxygen Download PDFInfo
- Publication number
- CN214367816U CN214367816U CN202120375753.6U CN202120375753U CN214367816U CN 214367816 U CN214367816 U CN 214367816U CN 202120375753 U CN202120375753 U CN 202120375753U CN 214367816 U CN214367816 U CN 214367816U
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- valve
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- oil
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- sealing
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Abstract
The utility model relates to a special oxygen butterfly valve, which comprises a valve body, a valve seat, a valve rod, a butterfly plate and a transmission mechanism, wherein the transmission mechanism is arranged on the valve body through a bracket; the method is characterized in that: the oil prohibiting tank is arranged between the transmission mechanism and the valve body, the oil prohibiting tank is arranged on the outer side of the valve rod in the support, the upper end of the oil prohibiting tank is hermetically arranged on the lower end surface of the mounting plane of the support, the lower end of the oil prohibiting tank is hermetically arranged on the upper end surface of the mounting plane under the support, a closed sealing cavity is formed between the transmission mechanism and the valve body, and therefore safety accidents caused by the fact that oil stains in working conditions penetrate into the valve body from the outer circular surface of the valve rod from a filler to be in contact with oxygen are prevented.
Description
Technical Field
The utility model belongs to the valve field, in particular to butterfly valve. The utility model is suitable for a valve of steel plant oxygen conveying pipeline.
Background
The butterfly valve is widely applied to medium conveying pipelines in various fields of national economy, and generally comprises a valve body, a valve seat, a butterfly plate, a valve rod and a transmission mechanism, wherein a packing sealing device is installed between the valve rod and the valve body, the transmission mechanism is installed at the upper end of the valve body through a support, and the transmission mechanism drives the butterfly plate to rotate for 90 degrees through the valve rod, so that the opening and closing operation of the valve is realized, and the butterfly valve has the advantages of simple structure, convenience in opening and closing and the like. However, under the working condition of steel smelting, oil stains in the production process easily enter the inner cavity of the valve body from the valve rod, pollute media and cause production safety accidents.
Disclosure of Invention
The utility model discloses to the not enough of prior art existence, provide one kind with valve rod and external sealed isolation, prevent that oil stain, spot from getting into the valve pocket along valve rod surface, the special butterfly valve of oxygen safe in utilization.
The technical scheme of the utility model comprises a valve body, a valve seat, a valve rod, a butterfly plate and a transmission mechanism, wherein the butterfly plate and the valve seat are provided with mutually matched sealing surfaces, the back surface of the butterfly plate is fixedly arranged on the valve rod by a cylindrical pin, the upper end of the valve rod is connected with the transmission mechanism, a sealing filler is arranged between the valve rod and the valve body, and the transmission mechanism is arranged on the valve body through a bracket; the method is characterized in that: an oil prohibiting tank is arranged between the transmission mechanism and the valve body, the oil prohibiting tank is arranged on the outer side of the valve rod in the support, the upper end of the oil prohibiting tank is hermetically arranged on the lower end face of the mounting plane of the support, the lower end of the oil prohibiting tank is hermetically arranged on the upper end face of the mounting plane of the support, and a closed sealing cavity is formed between the transmission mechanism and the valve body.
In the technical scheme, the center line of the valve rod and the center of a butterfly plate are eccentrically arranged, the center line of the valve rod and the sealing surface of the butterfly plate are eccentrically arranged, the sealing surface of the valve seat is a conical surface, and an included angle is formed between the central line of the cone and the central line of a valve body channel.
In the technical scheme, the butterfly plate sealing surface is formed by installing a plastic sealing ring on the butterfly plate, the plastic sealing ring is installed on the butterfly plate through a pressing ring, and the sealing surface of the plastic sealing ring is matched with the sealing surface of the valve seat to form a soft sealing pair.
Compared with the prior art, the utility model beneficial effect be: set up confined oil tank between drive mechanism and valve body, seal the valve rod of packing upside and install in the oil tank of prohibiting, prevent that the oil stain in the operating mode from leading to the fact the incident with oxygen contact in the valve body from the filler infiltration by the outer disc of valve rod, have grease proofing, dustproof, advantage such as the security performance is good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The special oxygen butterfly valve shown in fig. 1 comprises a valve body 12, a valve seat 5, a valve rod 10, a butterfly plate 9 and a transmission mechanism, wherein the butterfly plate 9 and the valve seat 5 are provided with mutually matched sealing surfaces, the back surface of the butterfly plate 9 is fixedly arranged on the valve rod 10 through a cylindrical pin 8, the upper end of the valve rod 10 is connected with the transmission mechanism, a sealing filler 4 is arranged between the valve rod 10 and the valve body 12, the sealing filler 4 is arranged in a filler cavity between the valve body 2 and the valve rod 10 through a gland 3 to realize cavity sealing, and the transmission mechanism is arranged on the valve body 12 through a support 2; the method is characterized in that: an oil prohibiting tank 1 is arranged between a transmission mechanism and a valve body 12, the oil prohibiting tank 1 is installed on the outer side of a valve rod 10 in a support 2, the upper end of the oil prohibiting tank is installed on the lower end face of an installation plane on the support 2 in a sealing mode, the lower end of the oil prohibiting tank is installed on the upper end face of the installation plane under the support 2 in a sealing mode, a sealed cavity is formed between the transmission mechanism and the valve body 12, and medium pollution and safety accidents caused by the fact that working condition oil stains and dust penetrate into the inner cavity of the valve body 12 from the position between the valve rod 10 and a sealing filler 4 and contact with oxygen are prevented. The upper end of the oil-forbidden tank 1 can be fixedly installed on the outer circular surface of the valve rod 10 in a sealing mode, the lower end of the oil-forbidden tank is connected with the upper end face of the lower installation plane of the support 2 in a dynamic sealing mode, external oil stains and dust of a working condition can be prevented from entering the inner cavity of the valve body 12, and oil stains of a turbine device of the transmission mechanism can be prevented from permeating the inner cavity of the valve body 12 from the valve rod 10. The lower end of the valve body 12 is closed by a lower cover 13.
The central line of the valve rod 10 and the center of the butterfly plate 9 are eccentrically arranged, the central line of the valve rod 10 and the sealing surface of the butterfly plate 9 are eccentrically arranged, the sealing surface of the valve seat 5 is a conical surface, an included angle is formed between the central line of the cone and the central line of the channel of the valve body 12, a triple eccentric structure is formed, and the sealing specific pressure of a sealing pair is enhanced when the valve is closed.
The sealing surface of the butterfly plate 9 is formed by installing a plastic sealing ring 6 on the butterfly plate 9, the plastic sealing ring 6 is installed on the butterfly plate 9 through a pressing ring 7 and a screw 11, and the sealing surface of the plastic sealing ring 6 is matched with the sealing surface of the valve seat 5 to form a soft sealing pair.
Claims (3)
1. A special oxygen butterfly valve comprises a valve body (12), a valve seat (5), a valve rod (10), a butterfly plate (9) and a transmission mechanism, wherein the butterfly plate (9) and the valve seat (5) are provided with mutually matched sealing surfaces, the back surface of the butterfly plate (9) is fixedly arranged on the valve rod (10) through a cylindrical pin (8), the upper end of the valve rod (10) is connected with the transmission mechanism, a sealing filler (4) is arranged between the valve rod (10) and the valve body (12), and the transmission mechanism is arranged on the valve body (12) through a support (2); the method is characterized in that: an oil-forbidden tank (1) is arranged between the transmission mechanism and the valve body (12), the oil-forbidden tank (1) is arranged on the outer side of a valve rod (10) in the support (2), the upper end of the oil-forbidden tank is hermetically arranged on the lower end face of an installation plane on the support (2), the lower end of the oil-forbidden tank is hermetically arranged on the upper end face of a lower installation plane of the support (2), and a closed sealing cavity is formed between the transmission mechanism and the valve body (12).
2. The oxygen dedicated butterfly valve of claim 1, wherein: the central line of the valve rod (10) and the center of a circle of the butterfly plate (9) are eccentrically arranged, the central line of the valve rod (10) and the sealing surface of the butterfly plate (9) are eccentrically arranged, the sealing surface of the valve seat (5) is a conical surface, and an included angle is formed between the central line of the cone and the central line of a channel of the valve body (12).
3. The oxygen dedicated butterfly valve of claim 1 or 2, wherein: the sealing surface of the butterfly plate (9) is formed by installing a plastic sealing ring (6) on the butterfly plate (9), the plastic sealing ring (6) is installed on the butterfly plate (9) through a pressing ring (7) and a screw (11), and the sealing surface of the plastic sealing ring (6) is matched with the sealing surface of the valve seat (5) to form a soft sealing pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375753.6U CN214367816U (en) | 2021-02-19 | 2021-02-19 | Special butterfly valve for oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375753.6U CN214367816U (en) | 2021-02-19 | 2021-02-19 | Special butterfly valve for oxygen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367816U true CN214367816U (en) | 2021-10-08 |
Family
ID=77965642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120375753.6U Active CN214367816U (en) | 2021-02-19 | 2021-02-19 | Special butterfly valve for oxygen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214367816U (en) |
-
2021
- 2021-02-19 CN CN202120375753.6U patent/CN214367816U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |