CN207830571U - Low temperature butterfly valve - Google Patents
Low temperature butterfly valve Download PDFInfo
- Publication number
- CN207830571U CN207830571U CN201721923103.0U CN201721923103U CN207830571U CN 207830571 U CN207830571 U CN 207830571U CN 201721923103 U CN201721923103 U CN 201721923103U CN 207830571 U CN207830571 U CN 207830571U
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- valve
- valve body
- extension bar
- body extension
- plate
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Abstract
The utility model is related to butterfly valve technical field more particularly to a kind of low temperature butterfly valves, it is characterised in that：Including valve body, lower valve shaft, valve seat, all-metal sealing circle, valve plate pressing plate, valve plate, valve body extension bar, 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, the top of the valve body is fixed with valve body extension bar, the centre of the valve body extension bar is equipped with hollow cavity, the lower part of valve body extension bar is fixed by the top of cylindrical screw and the valve body, long axle sleeve is equipped between the upper valve shaft and the valve body, the top of long axle sleeve is equipped with spacer, the top of the spacer extends in the valve body extension bar, upper valve shaft passes through the valve body extension bar, filling body to be mounted between the valve body extension bar and gone up valve shaft.Cryogenic gas buffering area can be used as using hollow design, effectively avoid freezing situation appearance.
Description
Technical field
The utility model is related to butterfly valve technical field more particularly to a kind of 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 low temperature butterfly valves.
The utility model to achieve the above object, using following technical scheme：
A kind of 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, valve body extension bar, upper valve shaft, valve plate sealing ring and filling body；The lower valve shaft is mounted on the valve by short sleeve
The lower part of body 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 sets
There are the all-metal sealing circle, the valve plate pressing plate to be fixed on the valve plate by fillister head screw, valve plate pressing plate will be described
All-metal sealing circle is fixed, and the valve seat is fixed on the valve body and coordinates with the metal o-ring, the valve plate
Top and institute's upper valve axis connection, the top of the valve body is fixed with valve body extension bar, and the centre of the valve body extension bar is equipped with
The lower part of hollow cavity, valve body extension bar is fixed by the top of cylindrical screw and the valve body, the upper valve shaft with it is described
Long axle sleeve is equipped between valve body, the top of long axle sleeve is equipped with spacer, and the top of the spacer extends in the valve body extension bar,
Upper valve shaft passes through the valve body extension bar, filling body to be mounted between the valve body extension bar 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.
Preferably, the top of the valve body extension bar is connect by bolt with holder.
The utility model has the beneficial effects that:Cryogenic gas buffering area can be used as using hollow design, effectively avoid freezing
Situation occurs.All-metal sealing circle designs, and all-metal sealing circle replaces metal to be designed with nonmetallic interlayer sealing ring, can effectively drop
The leakage problem of the low sealing surface brought that expands with heat and contract with cold.Valve body extension bar uses inner cavity hollow design.Extension bar can be by filler
And executing agency is effectively protected filler and actuator from low temperature effect far from low-temperature region；
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the structural schematic diagram of valve body extension bar in the utility model；
Fig. 4 is the mounting structure schematic diagram of all-metal sealing circle and valve plate in the utility model；
Fig. 5 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 5, a kind of 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 mounted on the valve by short sleeve
The lower part of body is sealed by rear blanking cover 9 and is fixed, and institute's lower valve shaft is connect with the lower part of the valve plate, the side ring week of the valve plate
Equipped with the all-metal sealing circle, the valve plate pressing plate is fixed on by fillister head screw on the valve plate, and valve plate pressing plate is by institute
It states all-metal sealing circle to be fixed, the valve seat is fixed on the valve body and with the metal o-ring coordinates, and valve plate is close
Seal is mounted between the metal o-ring and the valve plate, top and the institute's upper valve axis connection of the valve plate, the valve body
Top be fixed with valve body extension bar 10, the centre of the valve body extension bar is equipped with hollow cavity 11, the lower part of valve body extension bar
It is fixed by cylindrical screw 12 and the top of the valve body, long axle sleeve 13 is equipped between the upper valve shaft and the valve body, it is long
The top of axle sleeve is equipped with spacer 14, and the top of the spacer extends in the valve body extension bar, and upper valve shaft passes through the valve body
Extension bar, filling body are mounted between the valve body extension bar and gone up valve shaft.
Filling body includes Packing seat 15 in the stuffing-box being sequentially arranged on valve body extension bar, filler 16, filler pressure
Filler pressing sleeve box filler is fixed in stuffing-box, is fixed on the top of valve body extension bar by set 17, hold-down grid 18, hold-down grid
There is holder 19.
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.Valve body extension bar uses inner cavity hollow design.Extension bar can incite somebody to action
Filler and executing agency are effectively protected filler and actuator from low temperature effect far from low-temperature region；Hollow design can be used as
Cryogenic gas buffering area effectively avoids freezing situation appearance.
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 (3)
1. a kind of 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, valve body extension bar, upper valve shaft, valve plate sealing ring and filling body；The lower valve shaft is mounted on the valve by short sleeve
The lower part of body 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 sets
There are the all-metal sealing circle, the valve plate pressing plate to be fixed on the valve plate by fillister head screw, valve plate pressing plate will be described
All-metal sealing circle is fixed, and the valve seat is fixed on the valve body and coordinates with the metal o-ring, the valve plate
Top and institute's upper valve axis connection, the top of the valve body is fixed with valve body extension bar, and the centre of the valve body extension bar is equipped with
The lower part of hollow cavity, valve body extension bar is fixed by the top of cylindrical screw and the valve body, the upper valve shaft with it is described
Long axle sleeve is equipped between valve body, the top of long axle sleeve is equipped with spacer, and the top of the spacer extends in the valve body extension bar,
Upper valve shaft passes through the valve body extension bar, filling body to be mounted between the valve body extension bar and gone up valve shaft.
2. low temperature butterfly valve according to claim 1, it is characterised in that：Filling body includes being sequentially arranged at valve body extension bar
On stuffing-box in Packing seat, filler, filler pressing sleeve, hold-down grid.
3. low temperature butterfly valve according to claim 1, it is characterised in that：The top of the valve body extension bar passes through bolt and branch
Frame connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923103.0U CN207830571U (en) | 2017-12-31 | 2017-12-31 | Low temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721923103.0U CN207830571U (en) | 2017-12-31 | 2017-12-31 | Low temperature butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830571U true CN207830571U (en) | 2018-09-07 |
Family
ID=63391229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721923103.0U Active CN207830571U (en) | 2017-12-31 | 2017-12-31 | Low temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990010A (en) * | 2017-12-31 | 2018-05-04 | 天津富赛克流体控制设备有限公司 | Low temperature butterfly valve |
-
2017
- 2017-12-31 CN CN201721923103.0U patent/CN207830571U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990010A (en) * | 2017-12-31 | 2018-05-04 | 天津富赛克流体控制设备有限公司 | Low temperature butterfly valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |