CN208057963U - High leakproofness low temperature butterfly valve - Google Patents
High leakproofness low temperature butterfly valve Download PDFInfo
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- CN208057963U CN208057963U CN201721923101.1U CN201721923101U CN208057963U CN 208057963 U CN208057963 U CN 208057963U CN 201721923101 U CN201721923101 U CN 201721923101U CN 208057963 U CN208057963 U CN 208057963U
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Abstract
The utility model is related to butterfly valve technical field more particularly to a kind of high leakproofness low temperature butterfly valves, including valve body, lower valve shaft, valve seat, valve plate pressing plate, valve plate, upper valve shaft, valve plate sealing ring and filling body；The lower valve shaft is mounted on the lower part of the valve body by short sleeve, it is sealed and is fixed by rear blanking cover, institute's lower valve shaft is connect with the lower part of the valve plate, one side ring week of the valve plate is equipped with the all-metal sealing circle, the valve plate pressing plate is fixed on by fillister head screw on the valve plate, the all-metal sealing circle is fixed by valve plate pressing plate, the valve seat is fixed on the valve body and coordinates with the metal o-ring, the top of the valve plate and institute's upper valve axis connection, filling body are mounted between the valve body and gone up valve shaft.It is designed using all-metal sealing circle, all-metal sealing circle replaces metal to be designed with nonmetallic interlayer sealing ring, can effectively reduce the leakage problem for the sealing surface brought that expands with heat and contract with cold.Valve body extension bar uses inner cavity hollow design.
Description
Technical field
The utility model is related to butterfly valve technical field more particularly to a kind of high leakproofness low temperature butterfly valves.
Background technology
In the prior art, the butterfly valve to work under room temperature is frequently with metal-non-metal sealing pair.But under low-temperature condition, by
It is much bigger compared with metal material in the coefficient of expansion of nonmetallic materials so that shrinkage and metal sealing, valve body when its low temperature etc.
The shrinkage of counterpart differs greatly, and is seriously reduced so as to cause seal pressure, is as a result easy to cause the result of seal failure.Separately
Outside, most of nonmetallic materials are hardened, become fragile at cryogenic temperature, lose toughness, so as to cause cold flow and stress relaxation.
Utility model content
Purpose of the utility model is to overcome the shortcomings of the above technology, and to provide a kind of high leakproofness low temperature butterfly valves.
The utility model to achieve the above object, using following technical scheme：
A kind of high leakproofness low temperature butterfly valve, it is characterised in that：Including valve body, lower valve shaft, valve seat, valve plate pressing plate, valve plate, on
Valve shaft, valve plate sealing ring and filling body；The lower valve shaft is mounted on the lower part of the valve body by short sleeve, by rear stifled
Lid sealing is fixed, and institute's lower valve shaft is connect with the lower part of the valve plate, and a side ring week of the valve plate is equipped with the all-metal sealing
Circle, the valve plate pressing plate are fixed on by fillister head screw on the valve plate, and valve plate pressing plate compresses the all-metal sealing circle
Fixed, the valve seat is fixed on the valve body and coordinates with the metal o-ring, the top of the valve plate and gone up valve shaft
Connection, filling body are mounted between the valve body and gone up valve shaft.
Preferably, filling body includes Packing seat, filler, the filler in the stuffing-box being sequentially arranged on valve body extension bar
Pressing sleeve, hold-down grid.
The utility model has the beneficial effects that:Using all-metal sealing circle design, all-metal sealing circle replace metal with it is non-
Metal sandwich sealing ring designs, and can effectively reduce the leakage problem for the sealing surface brought that expands with heat and contract with cold.In valve body extension bar uses
Chamber hollow design.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the mounting structure schematic diagram of all-metal sealing circle and valve plate in the utility model；
Fig. 3 is the enlarged drawing at A in Fig. 1.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment of the present utility model is described in detail in preferred embodiment.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
Novel limitation.
As Figure 1-Figure 2, a kind of high leakproofness low temperature butterfly valve, including valve body 1, lower valve shaft 2, valve seat 3, all-metal sealing
Circle 4, valve plate pressing plate 5, valve plate 6, upper valve shaft 7, valve plate sealing ring 8 and filling body；The lower valve shaft is installed by short sleeve
It in the lower part of the valve body, is sealed and is fixed by rear blanking cover 9, institute's lower valve shaft is connect with the lower part of the valve plate, the valve plate
One side ring week was equipped with the all-metal sealing circle, and the valve plate pressing plate 5 is fixed on by fillister head screw 10 on the valve plate, valve
The all-metal sealing circle is fixed by plate pressing plate, and the valve seat is fixed on the valve body and matches with the metal o-ring
It closing, valve plate sealing ring is mounted between the metal o-ring and the valve plate, top and the institute's upper valve axis connection of the valve plate,
Filling body is mounted between the valve body and gone up valve shaft.Filling body includes the filler being sequentially arranged on valve body extension bar
Filler pressing sleeve box filler is fixed on and fills out by Packing seat 11, filler 12, filler pressing sleeve 13, hold-down grid 14 in letter, hold-down grid
Expect in letter, holder 15 is fixed on the top of valve body extension bar.
It is designed using all-metal sealing circle, all-metal sealing circle replaces metal to be designed with nonmetallic interlayer sealing ring, can have
Effect reduces the leakage problem for the sealing surface brought that expands with heat and contract with cold.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (2)
1. a kind of high leakproofness low temperature butterfly valve, it is characterised in that：Including valve body, lower valve shaft, valve seat, all-metal sealing circle, valve plate
Pressing plate, valve plate, upper valve shaft, valve plate sealing ring and filling body；The lower valve shaft is mounted on the valve body by short sleeve
Lower part is sealed by rear blanking cover and is fixed, and institute's lower valve shaft is connect with the lower part of the valve plate, and a side ring week of the valve plate is equipped with institute
All-metal sealing circle is stated, the valve plate pressing plate is fixed on by fillister head screw on the valve plate, and valve plate pressing plate is by the full gold
Belong to sealing ring be fixed, the valve seat be fixed on the valve body and with the metal o-ring coordinate, the valve plate it is upper
Portion and institute's upper valve axis connection, filling body are mounted between the valve body and gone up valve shaft.
2. high leakproofness low temperature butterfly valve according to claim 1, it is characterised in that：Filling body includes being sequentially arranged at valve
The Packing seat in stuffing-box, filler, filler pressing sleeve, hold-down grid on body extension bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923101.1U CN208057963U (en) | 2017-12-31 | 2017-12-31 | High leakproofness low temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923101.1U CN208057963U (en) | 2017-12-31 | 2017-12-31 | High leakproofness low temperature butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057963U true CN208057963U (en) | 2018-11-06 |
Family
ID=63995313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721923101.1U Active CN208057963U (en) | 2017-12-31 | 2017-12-31 | High leakproofness low temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737208A (en) * | 2019-02-01 | 2019-05-10 | 天津富赛克流体控制设备有限公司 | A kind of heat distribution pipe network butterfly valve |
-
2017
- 2017-12-31 CN CN201721923101.1U patent/CN208057963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737208A (en) * | 2019-02-01 | 2019-05-10 | 天津富赛克流体控制设备有限公司 | A kind of heat distribution pipe network butterfly valve |
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