CN207569230U - A kind of low leakage cage type regulating valve of high temperature - Google Patents
A kind of low leakage cage type regulating valve of high temperature Download PDFInfo
- Publication number
- CN207569230U CN207569230U CN201721707590.7U CN201721707590U CN207569230U CN 207569230 U CN207569230 U CN 207569230U CN 201721707590 U CN201721707590 U CN 201721707590U CN 207569230 U CN207569230 U CN 207569230U
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- China
- Prior art keywords
- valve
- sealing ring
- briquetting
- butterfly spring
- plug
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Abstract
The utility model discloses a kind of low leakage cage type regulating valves of high temperature, including valve body, sleeve, valve plug, valve rod, valve deck, gland, pressing plate and spill-proof assembly, plug tip is equipped with installation step, spill-proof assembly is arranged on installation step and includes sealing ring from bottom to up, trapezoidal graphite pads, briquetting, butterfly spring and pressure ring, seal ring set is located on valve plug and positioned at installation step bottom, trapezoidal graphite pads are set on sealing ring and wrap up exterior plug surface, briquetting is set on sealing ring and inside holds out against trapezoidal graphite pads, butterfly spring is set on briquetting, pressure ring is located on butterfly spring and is fastened by bolts；Graphite pads prevent medium at sealing ring in leak, greatly reduce leakage rate, the fixed range of metal to metal is sealed by butterfly spring become elastic controllable distance sealing again, sealing effect is good, leakage rate is further reduced, meets worst hot case requirement, requirement on machining accuracy is low, processing is simple efficient, using more convenient.
Description
Technical field
The utility model belongs to pipeline valve body field, more particularly to a kind of cage small suitable for worst hot case, leakage rate
Regulating valve.
Background technology
Valve uses widely in pipeline, and valve classification is very a variety of, and regulating valve is also using very extensive
, regulating valve is typically used in big pressure difference occasion because of the particularity of its structure, big pressure difference using when will appear leakage rate
The problem of big, and this is also the standard that meets the requirements in national standard, although meeting national standard, is used in some worst hot cases
When, the bad control of sealing interplanar distance of valve plug and sleeve, as long as there is a point tolerance to will result in very big leakage during processing, processing
Required precision is high, in order to reduce leakage rate, is formed mostly using attrition process at present, grinds and improve in precision,
But there is also it is larger the defects of, difficulty of processing is big, and processing efficiency is low, and labor intensity is big, and precision is also unable to reach requirement.
Sealing effect is not ideal enough, leakage rate or bigger than normal.Very big inconvenience is brought to using.
The technical problem to be solved by the present invention is to provide it is a kind of processing it is simple and convenient, high in machining efficiency, to precision will
It asks not high and also meets that requirement, sealing effect are good, leakage rate is few, the low leakage cage type regulating valve of new type high temperature easy to use.
Utility model content
To solve, above-mentioned prior art requirement on machining accuracy is high, difficulty of processing is big, processing efficiency is low, labor intensity is big, close
The problems such as effect is undesirable, leakage rate is big, inconvenient to use is sealed, the utility model adopts the following technical solution：
The utility model provides a kind of high temperature low leakage cage type regulating valve, including valve body, sleeve, valve plug, valve rod, valve deck,
Gland, pressing plate and spill-proof assembly, the valve body is interior to be equipped with first chamber and second chamber, and the sleeve is set on valve body
Interior, the valve rod is set at valve body inner axes, and the valve plug is set in valve body and is connected with valve stem end, and the plug tip is set
There is installation step, the spill-proof assembly is arranged on installation step and includes sealing ring, trapezoidal graphite pads, pressure from bottom to up
Block, butterfly spring and pressure ring, the seal ring set are located on valve plug and positioned at installation step bottoms, and the trapezoidal graphite pads are set on
On sealing ring and exterior plug surface is wrapped up, the briquetting is set on sealing ring and inside holds out against trapezoidal graphite pads, the butterfly bullet
Spring is set on briquetting, and the pressure ring is located on butterfly spring and is fastened by bolts, and the valve deck is set at body top axle center,
Packing spring is equipped in the valve deck, the gland is set at the top of valve deck and withstands compression packing spring, and the pressing plate is tight
Admittedly it is arranged on body top.
The beneficial effects of the utility model are：By the graphite pads in spill-proof assembly prevent medium at sealing ring in
Leakage, greatly reduces leakage rate, then by butterfly spring seal the fixed range of metal to metal to become elastic controllable distance close
Envelope, sealing effect is good, is further reduced leakage rate, meets worst hot case requirement, and requirement on machining accuracy is low, processes simple effect
Rate is high, using more convenient.
Description of the drawings
Fig. 1 is a kind of structure diagram of embodiment of the utility model.
Fig. 2 is the close-up schematic view of spill-proof assembly in the utility model.
Specific embodiment
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of low leakage cage type regulating valve of high temperature, including valve body 1, sleeve 2, valve plug 3, valve rod 4, valve deck 5,
Gland 6, pressing plate 7 and spill-proof assembly 8, the valve body 1 is interior to be equipped with first chamber 11 and second chamber 12, the sleeve 2
In valve body 1, the valve rod 4 is set at 1 inner axes of valve body, and the valve plug 3 is set in valve body 1 and is connected with 4 end of valve rod,
3 top of valve plug is equipped with installation step 31, and the spill-proof assembly 8 is arranged on installation step 31 and includes from bottom to up close
Seal ring 81, trapezoidal graphite pads 82, briquetting 83, butterfly spring 84 and pressure ring 85（As shown in Figure 2）, the sealing ring 81 is set in valve
On plug 3 and positioned at 31 bottom of installation step, the trapezoidal graphite pads 82 are set on sealing ring 81 and wrap up 3 outer surface of valve plug, institute
Briquetting 83 is stated on sealing ring 81 and inside holds out against trapezoidal graphite pads 82, the butterfly spring 84 is set on briquetting, the pressure
Ring 85 is located on butterfly spring 84 and is fastened by bolts, and the valve deck 5 is set at 1 top axle center of valve body, is set in the valve deck 5
There is packing spring 51, the gland 6, which is set on 5 top of valve deck and withstands, compresses packing spring 51, the fastening of pressing plate 7 setting
At 1 top of valve body, prevent medium from generating interior leakage at sealing ring by the trapezoidal graphite pads in spill-proof assembly, greatly reduce and let out
Leakage quantity, then seal the fixed range of metal to metal by butterfly spring and become elastic controllable distance sealing, sealing effect is good,
Leakage rate is further reduced, meets worst hot case requirement, requirement on machining accuracy is low, and processing is simple efficient, and use is more square
Just.
The product form and style of above-described embodiment and schema and non-limiting the utility model, any technical field
The appropriate variation or modification that those of ordinary skill does it all should be regarded as not departing from the patent category of the utility model.
Claims (1)
1. a kind of low leakage cage type regulating valve of high temperature, it is characterised in that：Including valve body（1）, sleeve（2）, valve plug（3）, valve rod
（4）, valve deck（5）, gland（6）, pressing plate（7）And spill-proof assembly（8）, the valve body（1）It is interior to be equipped with first chamber（11）
And second chamber（12）, the sleeve（2）Set on valve body（1）It is interior, the valve rod（4）Set on valve body（1）At inner axes, the valve
Plug（3）Set on valve body（1）Interior and and valve rod（4）End is connected, the valve plug（3）Top is equipped with installation step（31）, it is described anti-
Leak component（8）It is arranged on installation step（31）Include above and from bottom to up sealing ring（81）, trapezoidal graphite pads（82）, briquetting
（83）, butterfly spring（84）And pressure ring（85）, the sealing ring（81）It is set in valve plug（3）Above and positioned at installation step（31）Bottom
Portion, the trapezoidal graphite pads（82）Set on sealing ring（81）It goes up and wraps up valve plug（3）Outer surface, the briquetting（83）Set on sealing
Ring（81）Upper and inside holds out against trapezoidal graphite pads（82）, the butterfly spring（84）Set on briquetting（83）On, the pressure ring（85）
Positioned at butterfly spring（84）It goes up and is fastened by bolts, the valve deck（5）Set on valve body（1）At the axle center of top, the valve deck（5）
It is interior to be equipped with packing spring（51）, the gland（6）Set on valve deck（5）Top and withstand compression packing spring（51）, it is described
Pressing plate（7）Fastening is arranged on valve body（1）Top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721707590.7U CN207569230U (en) | 2017-12-11 | 2017-12-11 | A kind of low leakage cage type regulating valve of high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721707590.7U CN207569230U (en) | 2017-12-11 | 2017-12-11 | A kind of low leakage cage type regulating valve of high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207569230U true CN207569230U (en) | 2018-07-03 |
Family
ID=62687470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721707590.7U Active CN207569230U (en) | 2017-12-11 | 2017-12-11 | A kind of low leakage cage type regulating valve of high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207569230U (en) |
-
2017
- 2017-12-11 CN CN201721707590.7U patent/CN207569230U/en active Active
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| GR01 | Patent grant |