CN208397427U - A kind of valve rod leak-proof structure - Google Patents
A kind of valve rod leak-proof structure Download PDFInfo
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- CN208397427U CN208397427U CN201820957966.8U CN201820957966U CN208397427U CN 208397427 U CN208397427 U CN 208397427U CN 201820957966 U CN201820957966 U CN 201820957966U CN 208397427 U CN208397427 U CN 208397427U
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Abstract
The utility model discloses a kind of valve rod leak-proof structures, including valve body, valve rod: the upper and lower side in the valve body with valve rod cooperation is respectively arranged with the first packing area, the second packing area；It is equipped with multiple lubrication packing layers in first packing area, is provided with the first gland above the lubrication packing layer；It is equipped with multiple high temperature resistant packing layers in second packing area, is provided with the second gland below the high temperature resistant packing layer.It is related to valve seal technical field.The utility model lubricates that filler layer resistance is small, and sealing effect is good, and high temperature resistant packing layer high temperature resistance is good, and has certain dust-proof effect, and packing layer can be individually replaced at two, save cost, can meet that resistance is small and high temperature resistant demand simultaneously.
Description
Technical field
The utility model relates to valve seal technical fields, are specifically related to a kind of valve rod leak-proof structure.
Background technique
In industrial production and daily life, require to use a large amount of various types of valves, valve it is close
Envelope is a problem for having to consider in its use process, and existing valve rod gland packing sealing, is by valve
It is integrally filled out in lid with airtight and watertight padding, then adjust pressing force with gland and fixes filler to realize valve stem seal, outside valve rod
Layer is provided with filler, higher cost, and in valve use process, the not phase of the use environment as locating for valve body upper and lower ends
Together, so the degree of wear of filler upper and lower side is also made a world of difference, but when there is at one abrasion leakage it is necessary to filler it is whole into
Row replacement, causes the waste of material, and whole filler is difficult to meet resistance small, while demand resistant to high temperature again.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned background technique, a kind of saving cost is provided, can be simultaneously
Meet that resistance is small and high temperature resistant demand, valve rod leak-proof structure that sealing effect is good.
The utility model provides a kind of valve rod leak-proof structure, including valve body, valve rod:
Upper and lower side in the valve body with valve rod cooperation is respectively arranged with the first packing area, the second packing area；
It is equipped with multiple lubrication packing layers in first packing area, is provided with the first filler pressure above the lubrication packing layer
Lid；
It is equipped with multiple high temperature resistant packing layers in second packing area, is provided with second below the high temperature resistant packing layer and fills out
Expect gland.
Based on the above technical solution, multiple lubrication packing layers are in addition to top layer and lowest level, remainder layer
Cross section is inverted V-shaped structure, and top layer and undermost cross section are adapted with inverted V-shaped structure respectively.
Based on the above technical solution, the cross section of multiple high temperature resistant packing layers is rectangular configuration.
Based on the above technical solution, it is provided at interval location between first packing area and the second packing area
Filler spacer.
Based on the above technical solution, first packing area, be provided with Packing seat below the second packing area
Piece.
Based on the above technical solution, the lubrication packing layer is polytetrafluoroethylene packing layer.
Based on the above technical solution, the high temperature resistant packing layer is graphite packing layer.
Compared with prior art, as follows the advantages of the utility model:
(1) the first packing area, the second packing area is respectively set in the upper and lower ends of valve rod in the utility model, and fills out at two
To expect that different packing layers is arranged in area, lubrication filler layer resistance is small, and sealing effect is good, and high temperature resistant packing layer high temperature resistance is good,
And there is certain dust-proof effect, packing layer can be individually replaced at two, save cost, can meet that resistance is small and high temperature resistant simultaneously
Demand.
(2) for the lubrication packing layer of the utility model in addition to top layer and lowest level, the cross section of remainder layer is inverted V-shaped knot
Structure, top layer and undermost cross section are adapted with inverted V-shaped structure respectively, compared to ordinary construction, can more be stopped outside valve body
The impurity in portion enters valve inner, pollutes the fluid of valve inner, therefore its sealing effect is better than using ordinary construction filler
The sealing structure of layer.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment；
Fig. 2 is the enlarged structure schematic diagram of first packing area of the utility model embodiment；
Fig. 3 is the enlarged structure schematic diagram of second packing area of the utility model embodiment.
Appended drawing reference: 1-valve body, 2-valve rods, the 3-the first packing area, 31-lubrication packing layers, the 32-the first filler pressure
Lid, the 4-the second packing area, 41-high temperature resistant packing layers, the 42-the second gland, 5-filler spacers, 6-filler gaskets.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further detail the utility model.
Referring to shown in Fig. 1 to Fig. 3, the utility model embodiment provides a kind of valve rod leak-proof structure, including valve body 1, valve rod
2:
Upper and lower side in the valve body 1 with the valve rod 2 cooperation is respectively arranged with the first packing area 3, the second packing area
4；
It is equipped with multiple lubrication packing layers 31 in first packing area 3, is provided with first above the lubrication packing layer 31
Gland 32；
It is equipped with multiple high temperature resistant packing layers 41 in second packing area 4, is provided with below the high temperature resistant packing layer 41
Second gland 42.
The first packing area 3, the second packing area 4 is respectively set in the upper and lower ends of valve rod 1 in the utility model, and fills out at two
Expect that different packing layers is arranged in area, lubrication 31 resistance of packing layer is small, and sealing effect is good, 41 high temperature resistance of high temperature resistant packing layer
It is good, and there is certain dust-proof effect, packing layer can be individually replaced at two, save cost, it is small and resistance to can to meet simultaneously resistance
High temperature demands, gland is for adjusting pressing force and fixing filler.
On the basis of the technical solution of last embodiment, further, multiple lubrication packing layers 31 remove top layer
And outside lowest level, the cross section of remainder layer is inverted V-shaped structure, top layer and undermost cross section respectively with inverted V-shaped structure phase
It adapts to；The lubrication packing layer 31 of the utility model is in addition to top layer and lowest level, and the cross section of remainder layer is inverted V-shaped structure, most
Upper layer and undermost cross section are adapted with inverted V-shaped structure respectively, compared to ordinary construction, can more be stopped outside valve body 1
Impurity enters inside valve body 1, pollutes the fluid inside valve body 1, therefore its sealing effect is better than using ordinary construction packing layer
Sealing structure.
On the basis of the technical solution of last embodiment, further, multiple high temperature resistant packing layers 41 it is transversal
Face is rectangular configuration；The cross section of high temperature resistant packing layer 41 uses rectangular configuration, and processing easy to produce, manufacturing cost is lower, and
And good dustproof effect.
On the basis of the technical solution of last embodiment, further, first packing area 3 and the second packing area 4
Between be provided with filler spacer 5 at interval location；The region setting filler spacer 5 of filler is not set outside valve rod 2, it is on the one hand available
In the gap and the precompression that adjust the first packing area 3 and the second packing area 4, on the other hand valve rod 2 can be protected not receive damage.
On the basis of the technical solution of last embodiment, further, first packing area 3, second packing area 4
Lower section is provided with filler gasket 6；Filler gasket 6 can prevent the medium in valve body 1 from leaking outside, filling packing area and adjacent component it
Between all uneven places, prevent medium from being revealed by faying face.
On the basis of the technical solution of last embodiment, further, the lubrication packing layer 31 is polytetrafluoroethylene (PTFE)
Packing layer；This material has the characteristics that antiacid alkali resistant, resists various organic solvents, is practically insoluble in all solvents, meanwhile, gather
The coefficient of friction of tetrafluoroethene is extremely low, and resistance is small when use, and sealing effect is good.
On the basis of the technical solution of last embodiment, further, the high temperature resistant packing layer 41 is graphite packing
Layer；The high temperature resistance of graphite packing layer is good, is able to take the acute variation of temperature and will not destroy, intensity is mentioned with temperature
It is high and reinforce.
Those skilled in the art can carry out various modifications to the utility model embodiment and modification, if these are modified
With modification within the scope of the claims of the present invention and its equivalent technology, then these modifications and variations are also practical new at this
Within the protection scope of type.
The prior art that the content being not described in detail in specification is known to the skilled person.
Claims (7)
1. a kind of valve rod leak-proof structure, including valve body (1), valve rod (2), it is characterised in that:
Upper and lower side in the valve body (1) with the valve rod (2) cooperation is respectively arranged with the first packing area (3), the second filler
Area (4)；
It is equipped with multiple lubrication packing layers (31) in first packing area (3), lubrication packing layer (31) top is provided with the
One gland (32)；
Multiple high temperature resistant packing layers (41), setting below the high temperature resistant packing layer (41) are equipped in second packing area (4)
There are the second gland (42).
2. a kind of valve rod leak-proof structure as described in claim 1, it is characterised in that: multiple lubrication packing layers (31) are except most
Outside upper layer and lowest level, the cross section of remainder layer is inverted V-shaped structure, top layer and undermost cross section respectively with inverted V-shaped knot
Structure is adapted.
3. a kind of valve rod leak-proof structure as described in claim 1, it is characterised in that: multiple high temperature resistant packing layers (41)
Cross section is rectangular configuration.
4. a kind of valve rod leak-proof structure as described in claim 1, it is characterised in that: first packing area (3) is filled out with second
Filler spacer (5) are provided at interval location between material area (4).
5. a kind of valve rod leak-proof structure as described in claim 1, it is characterised in that: first packing area (3), the second filler
Filler gasket (6) are provided with below area (4).
6. a kind of valve rod leak-proof structure as described in claim 1, it is characterised in that: the lubrication packing layer (31) is polytetrafluoro
Ethylene packing layer.
7. a kind of valve rod leak-proof structure as described in claim 1, it is characterised in that: the high temperature resistant packing layer (41) is graphite
Packing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820957966.8U CN208397427U (en) | 2018-06-20 | 2018-06-20 | A kind of valve rod leak-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820957966.8U CN208397427U (en) | 2018-06-20 | 2018-06-20 | A kind of valve rod leak-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208397427U true CN208397427U (en) | 2019-01-18 |
Family
ID=65133119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820957966.8U Active CN208397427U (en) | 2018-06-20 | 2018-06-20 | A kind of valve rod leak-proof structure |
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| Country | Link |
|---|---|
| CN (1) | CN208397427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591600A (en) * | 2018-06-20 | 2018-09-28 | 武汉汉德阀门股份有限公司 | A kind of valve rod leak-proof structure |
-
2018
- 2018-06-20 CN CN201820957966.8U patent/CN208397427U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591600A (en) * | 2018-06-20 | 2018-09-28 | 武汉汉德阀门股份有限公司 | A kind of valve rod leak-proof structure |
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