CN213236148U - Fireproof safety plug valve - Google Patents
Fireproof safety plug valve Download PDFInfo
- Publication number
- CN213236148U CN213236148U CN202022050176.1U CN202022050176U CN213236148U CN 213236148 U CN213236148 U CN 213236148U CN 202022050176 U CN202022050176 U CN 202022050176U CN 213236148 U CN213236148 U CN 213236148U
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Abstract
A fireproof safety plug valve. The method is characterized in that: the lower end opening of the middle part of the valve body is arranged, the cock is arranged in the valve body from bottom to top, the opening of the lower end of the valve body is provided with a valve cover, and a spring which drives the cock to move upwards and enables the sealing plug to be in close contact with the sealing bush is arranged between the valve cover and the cock; a graphite gasket is arranged between the valve cover and the valve body, a packing groove is arranged on the upper portion of the valve body, graphite packing is filled between the packing groove and the valve rod, a pressing sleeve and a pressing plate are sleeved outside the valve rod, and the pressing plate is connected with the valve body and presses the pressing sleeve to enable the pressing sleeve to compress the graphite packing. Its advantage lies in, seals through the graphite gasket between valve body bottom and the valve gap, seals through graphite packing between valve body and the valve rod, and when the conflagration comes temporarily, can guarantee reliably sealed, can not outwards reveal, provides pressure through the spring simultaneously and orders about sealing plug and bush and keep sealed, has self-adaptation sealed effect, and the adaptation is taken place pressure, the temperature variation that causes because of the conflagration, guarantees sealed reliable.
Description
Technical Field
The utility model relates to a valve, concretely relates to fire prevention safety type plug valve.
Background
The plug valve is a rotary valve in a closing part or a plunger shape, and the opening or the closing of the valve is realized by rotating 90 degrees to enable a passage port on the plug to be communicated with or separated from a passage port on the valve body.
The flange gasket of the conventional soft seal plug valve is made of PTFE, and when a fire happens, the PTFE is burnt out, leakage is generated, and the medium leaks to the atmosphere from the position of the valve rod, so that the conventional soft seal plug valve is very dangerous.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiency of the background art, the utility model provides a fire prevention safety type plug valve.
The utility model discloses the technical scheme who adopts: a fire-proof safety plug valve comprises a valve body, a sealing bush and a plug cock, wherein the sealing bush is arranged in the valve body, the plug cock comprises a sealing plug and a valve rod which are integrally formed, the plug cock is arranged in the valve body, the sealing plug is in sealing fit with the sealing bush, and the valve rod extends out of the valve body; the lower end of the middle part of the valve body is provided with an opening, the cock is arranged in the valve body from bottom to top, the opening at the lower end of the valve body is provided with a valve cover, and a spring which drives the cock to move upwards and enables the sealing plug to be in close contact with the sealing bush is arranged between the valve cover and the cock; the graphite packing valve is characterized in that a graphite gasket is arranged between the valve cover and the valve body, a packing groove is formed in the upper portion of the valve body, graphite packing is filled between the packing groove and the valve rod, a pressing sleeve and a pressing plate are sleeved outside the valve rod, and the pressing plate is connected with the valve body and presses the pressing sleeve to enable the pressing sleeve to compress the graphite packing.
The center of the valve cover is provided with a first spring groove, the center of the bottom of the cock is provided with a second spring groove, and two ends of the spring are respectively arranged in the first spring groove and the second spring groove.
The valve cover is formed with a first step, the valve body is formed with a second step, and the graphite gasket is restricted between the first step and the second step.
And a hand wheel is fixedly arranged at the end part of the upper end of the valve rod.
And a plurality of sealing bosses in sealing fit with the valve body are formed on the outer ring of the sealing bush.
The utility model has the advantages that: scheme more than adopting, it is sealed through the graphite gasket between valve body bottom and the valve gap, through graphite packing sealed between valve body and the valve rod, come temporarily when the conflagration, can guarantee reliably sealed, can not outwards reveal, provide pressure through the spring simultaneously and order about sealing plug and bush and keep sealed, have self-adaptation sealed effect, the adaptation takes place pressure, the temperature variation that causes because of the conflagration, guarantee sealed reliable.
Drawings
Fig. 1 is a schematic structural diagram of 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 fig. 1, the fireproof safety plug valve comprises a valve body 1, a sealing bush 2, a plug 3, a valve cover 4, a spring 5, a graphite gasket 6, graphite packing 7, a pressing sleeve 8, a pressing plate 9 and a hand wheel 10.
A medium circulation channel is horizontally formed in the valve body 1, a middle cavity is formed in the middle of the valve body 1, and the lower end of the middle of the valve body is arranged corresponding to an opening in the middle of the middle cavity.
The sealing bush 2 is arranged in the valve body 1 and has certain taper, and the outer ring is provided with a plurality of sealing bosses 21 which are in sealing fit with the valve body 1, so that reliable sealing with the valve body 1 is ensured.
The cock 3 comprises a sealing plug 31 and a valve rod 32 which are integrally formed, the cock 3 is arranged in the valve body 1, and is arranged in a middle cavity of the valve body 1 from bottom to top from an opening at the lower end of the middle part of the valve body, wherein the sealing plug 31 is a cone and can be matched with an inner ring of the sealing bush 2 to maintain sealing, the valve rod 32 extends out of the upper end of the valve body 1, and a hand wheel 10 is fixedly arranged at the end part of the upper end of the valve rod 32.
The valve cover 4 is arranged at an opening at the lower end of the middle part of the valve body, the spring 5 is arranged between the valve cover 4 and the cock 3, the spring 5 can always provide an elastic force to drive the cock 3 to move upwards and enable the sealing plug 31 to be in close contact with the sealing bush 2, and therefore the sealing effect is ensured.
The center of the valve cover 4 is provided with a first spring groove 41, the center of the bottom of the cock 3 is provided with a second spring groove 33, and two ends of the spring 5 are respectively arranged in the first spring groove 41 and the second spring groove 33 to position the spring 5, so that the action stability and the stress balance of the spring are ensured.
Be equipped with graphite gasket 6 between valve gap 4 and the valve body 1, seal valve gap 4 and valve body 1 through graphite gasket 6. Wherein, the valve cap 4 is formed with the first step 42, the valve body 1 is formed with the second step 12, the graphite gasket 6 is limited between the first step 42 and the second step 12, and the graphite gasket 6 is guaranteed to be compressed to keep a good sealing effect.
The upper portion of the valve body 1 is provided with a packing groove 11, graphite packing 7 is filled between the packing groove 11 and the valve rod 32, a pressing sleeve 8 and a pressing plate 9 are sleeved outside the valve rod 32, the pressing plate 9 is connected with the valve body 1 and presses the pressing sleeve 8 to enable the pressing sleeve 8 to compress the graphite packing 7, and the valve body 1 and the valve rod 32 are sealed through the graphite packing 7.
Scheme more than adopting, it is sealed through graphite gasket 6 between 1 bottom of valve body and the valve gap 4, sealed through graphite packing 7 between 1 and the valve rod of valve body, temporary when the conflagration comes, can guarantee reliably sealed, can not outwards reveal, provide pressure through spring 5 simultaneously and order about sealing plug 31 and seal bush 2 and keep sealed, have self-adaptation sealed effect, the adaptation takes place pressure, the temperature variation that causes because of the conflagration, guarantee sealed reliable.
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.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (5)
1. The fireproof safety plug valve comprises a valve body (1), a sealing bush (2) and a plug cock (3), wherein the sealing bush (2) is arranged in the valve body (1), the plug cock (3) comprises a sealing plug (31) and a valve rod (32) which are integrally formed, the plug cock (3) is arranged in the valve body (1), the sealing plug (31) is in sealing fit with the sealing bush (2), and the valve rod (32) extends out of the valve body (1);
the method is characterized in that: the lower end of the middle of the valve body (1) is provided with an opening, the cock (3) is arranged in the valve body (1) from bottom to top, the opening at the lower end of the valve body (1) is provided with a valve cover (4), and a spring (5) which drives the cock (3) to move upwards and enables the sealing plug (31) and the sealing bush (2) to be in close contact is arranged between the valve cover (4) and the cock (3);
a graphite gasket (6) is arranged between the valve cover (4) and the valve body (1),
the graphite packing device is characterized in that a packing groove (11) is formed in the upper portion of the valve body (1), graphite packing (7) is filled between the packing groove (11) and the valve rod (32), a pressing sleeve (8) and a pressing plate (9) are sleeved outside the valve rod (32), the pressing plate (9) is connected with the valve body (1), and the pressing sleeve (8) is pressed to enable the pressing sleeve to compress the graphite packing (7).
2. The flameproof and safe plug valve of claim 1, further comprising: the center of the valve cover (4) is provided with a first spring groove (41), the center of the bottom of the cock (3) is provided with a second spring groove (33), and two ends of the spring (5) are respectively arranged in the first spring groove (41) and the second spring groove (33).
3. The flameproof and safe plug valve of claim 1, further comprising: the valve cover (4) is provided with a first step (42), the valve body (1) is provided with a second step (12), and the graphite gasket (6) is limited between the first step (42) and the second step (12).
4. The flameproof and safe plug valve of claim 1, further comprising: and a hand wheel (10) is fixedly arranged at the end part of the upper end of the valve rod (32).
5. The flameproof and safe plug valve of claim 1, further comprising: the outer ring of the sealing bush (2) is provided with a plurality of sealing bosses (21) which are in sealing fit with the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022050176.1U CN213236148U (en) | 2020-09-18 | 2020-09-18 | Fireproof safety plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022050176.1U CN213236148U (en) | 2020-09-18 | 2020-09-18 | Fireproof safety plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213236148U true CN213236148U (en) | 2021-05-18 |
Family
ID=75876167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022050176.1U Active CN213236148U (en) | 2020-09-18 | 2020-09-18 | Fireproof safety plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213236148U (en) |
-
2020
- 2020-09-18 CN CN202022050176.1U patent/CN213236148U/en active Active
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