CN206592553U - Ultra micro control valve for small flows - Google Patents
Ultra micro control valve for small flows Download PDFInfo
- Publication number
- CN206592553U CN206592553U CN201720128963.9U CN201720128963U CN206592553U CN 206592553 U CN206592553 U CN 206592553U CN 201720128963 U CN201720128963 U CN 201720128963U CN 206592553 U CN206592553 U CN 206592553U
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- valve
- bonnet
- valve body
- micro control
- ultra micro
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Abstract
It is threadedly secured to the utility model discloses a kind of ultra micro control valve for small flows, including bonnet on valve body, lower end screw thread and the valve element of valve rod are fixed, and are fastened again by pin；Valve element is placed in valve pocket with valve body linear sealing, and poppet head uses Hardmetal materials, and valve body linear sealing contact position uses Hardmetal materials, and anti-wear performance is good, while only valve core head and valve body linear sealing face uses hard alloy, production cost is low；Bonnet uses multi-sealed, and bonnet lower end passes through interior O-ring and seal spool by outer O-ring and valve seal, bonnet lower end, it is ensured that bonnet, valve body and valve element have very outstanding sealing property, it is ensured that the sealing effectiveness and service life of valve.
Description
Technical field
The utility model is related to a kind of ultra micro control valve for small flows, and it is widely used in the occasion of various Small Flow Controls.
Background technology
Ultra micro control valve for small flows as robot control system(RCS) terminal execution unit, in all trades and professions extensive use.With certainly
Control field is constantly developed to high-end technology, the also more and more higher of the requirement to control valve, as residing for the control valve of field instrument
Working environment is harsher, control object characteristic complicated.Control valve is that executing agency receives source of the gas (or electricity, liquid) signal, is driven
Valve hole part pumps in valve body, is controlled with the regulation for reaching processing medium in pipeline.In the fortune up and down of valve element
During dynamic, medium can enter in bonnet along valve rod, from the leakage of valve rod upper end.The valve stem seal of common control valve for small flows,
It is, in the position of bonnet top stuffing-box, to be realized with tetrafluoro or graphite packing.The valve hole part of common control valve for small flows is in valve
When pumping in vivo, it is easily broken off in the high occasion valve element of the big flow velocity of pressure difference, core print seat sealing surface wearability is poor, makes
Use short life.
Utility model content
The purpose of this utility model makees strict sealing to bonnet aiming at the deficiencies in the prior art there is provided a kind of, prevents
Only medium leaks outside, and poppet head shape is tiny, and poppet head is good with valve body sealing surface anti-wear performance, and service life is long, simultaneously raw
Produce the low ultra micro control valve for small flows of cost.
To achieve the above object, the utility model is adopted the following technical scheme that：
A kind of ultra micro control valve for small flows, including bonnet are threadedly secured on valve body, the lower end screw thread and valve of valve rod
Core is fixed, and is fastened again by pin；Valve element is placed in valve pocket with valve body linear sealing, and poppet head uses Hardmetal materials,
Valve body linear sealing contact position uses Hardmetal materials, reduces in the high medium of the big flow velocity of pressure difference to the destruction of valve element and its right
The abrasion of valve body linear sealing, while only valve core head and valve body linear sealing face uses hard alloy, production cost is low；Under bonnet
End improves the sealing of stuffing-box by exterior seal ring and valve seal, bonnet lower end by inner seal ring and seal spool,
The sealing effectiveness and service life of valve are ensure that, sealing ring can be O-ring seal or other kinds of reciprocation sealing
Circle is general to meet requirement using O-ring seal；Valve rod upper end passes through lower liner, filler, gland, pressing plate, bolt spiral shell
Mother is fastened on bonnet.
It is preferred that, the valve rod is threadedly coupled with valve element, is fastened again by pin, and pin is welded on valve element forms recessed
Face.
It is preferred that, the valve element is with being 60 ° of linear metal sealing surfaces at valve body contact.
It is preferred that, stroke L is provided between the valve element and bonnet.
It is preferred that, the bonnet is provided with interior O-ring and outer O-ring.
It is preferred that, the valve body is provided with Tetrafluoro spacer with bonnet.
It is preferred that, the bonnet coordinates with valve element coaxial line and with valve element.
It is preferred that, by packing box seal between the valve rod and bonnet, filler, lower liner are by filler pressure in stuffing-box
Lid, pressing plate, bolt and nut are compressed, and are sealed on bonnet.
Above-mentioned ultra micro control valve for small flows medium it is low enter side go out, -196 DEG C of Applicable temperature~566 DEG C, bonnet is using multiple close
Envelope, it is ensured that bonnet, valve body and valve element have a very outstanding sealing property, the design of sealing surface special substance, it is ensured that valve element with
The anti-wear performance of valve body sealing surface, improves valve operation stability, and service life is long, reduces production cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is A portions partial enlargement cross section structure diagram in Fig. 1；
Fig. 3 is B-B cross section structure diagrams in Fig. 2.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Fixed referring to Fig. 1, Fig. 2, Fig. 3 ultra micro control valve for small flows, including bonnet 5 by bonnet screw thread 5 and Tetrafluoro spacer 4
On valve body 1, lower end screw thread and the valve element 2 of valve rod 3 are fixed, and are fastened again by pin 13；Valve element 2 is put with the linear sealing of valve body 1
In in valve pocket, the head of valve element 2 uses Hardmetal materials, and the linear sealing contact position of valve body 1 uses Hardmetal materials；Under bonnet 5
End is sealed by outer O-ring 11 with valve body 1, and the lower end of bonnet 5 is sealed by interior O-ring 12 and valve element 2；The upper end of valve rod 3 is under
Pad 6, filler 7, gland 8, pressing plate 9, bolt and nut 10 are fastened on bonnet 5.
Referring to Fig. 1, Fig. 2, Fig. 3, the valve rod 3 is threadedly coupled with valve element 2, is fastened again by pin 13, and pin 13 is welded
Concave surface is formed on valve element 2.
Referring to Fig. 1, the valve element 2 is 60 ° of linear metal sealing surfaces with the contact position of valve body 1.
Referring to Fig. 1, stroke L is provided between the valve element 2 and bonnet 5.
Referring to Fig. 1, Fig. 2, the bonnet 5 is provided with interior O-ring 12 and outer O-ring 11.
Referring to Fig. 1, the valve body 1 is provided with Tetrafluoro spacer 4 with bonnet 5.
Referring to Fig. 1, Fig. 2, the bonnet 5 coordinates with the coaxial line of valve element 2 and with valve element 2.
Referring to Fig. 1, gland 8 is placed on the lower liner 6, filler 7, is compressed by pressing plate 9, it is ensured that valve rod 3 and valve
Packing box seal between lid 5.
Although combining accompanying drawing describes embodiment of the present utility model, one of ordinary skill in the art can be
Various deformations or amendments are made in scope of the following claims.
Claims (7)
1. a kind of ultra micro control valve for small flows, including bonnet (5) are fixed on valve body (1) by bonnet screw thread and Tetrafluoro spacer (4)
On, the lower end screw thread and valve element (2) of valve rod (3) are fixed, and are fastened again by pin (13)；Valve element (2) and valve body (1) linear sealing
It is placed in valve pocket, valve element (2) head uses Hardmetal materials, valve body (1) linear sealing contact position uses Hardmetal materials；Valve
Cover (5) lower end to seal by outer O-ring (11) and valve body (1), bonnet (5) lower end is close by interior O-ring (12) and valve element (2)
Envelope；Valve rod (3) upper end is fastened on valve by lower liner (6), filler (7), gland (8), pressing plate (9), bolt and nut (10)
Cover on (5).
2. according to the ultra micro control valve for small flows described in claim 1, it is characterised in that：The valve element (2) and valve body (1) contact position
For 60 ° of linear metal sealing surfaces.
3. according to the ultra micro control valve for small flows described in claim 1, it is characterised in that：Set between the valve element (2) and bonnet (5)
There is stroke L.
4. according to the ultra micro control valve for small flows described in claim 1, it is characterised in that：The bonnet (5) is provided with interior O-ring (12)
With outer O-ring (11).
5. according to the ultra micro control valve for small flows described in claim 1, it is characterised in that：The valve body (1) is provided with four with bonnet (5)
Fluorine pad (4).
6. according to the ultra micro control valve for small flows described in claim 1, it is characterised in that：The bonnet (5) and valve element (2) coaxial line
And coordinate with valve element (2).
7. according to the ultra micro control valve for small flows described in claim 1, it is characterised in that：The lower liner (6), filler are put on (7)
Gland (8) is put, is compressed by pressing plate (9), it is ensured that the packing box seal between valve rod (3) and bonnet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128963.9U CN206592553U (en) | 2017-02-13 | 2017-02-13 | Ultra micro control valve for small flows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128963.9U CN206592553U (en) | 2017-02-13 | 2017-02-13 | Ultra micro control valve for small flows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206592553U true CN206592553U (en) | 2017-10-27 |
Family
ID=60128272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720128963.9U Active CN206592553U (en) | 2017-02-13 | 2017-02-13 | Ultra micro control valve for small flows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206592553U (en) |
-
2017
- 2017-02-13 CN CN201720128963.9U patent/CN206592553U/en active Active
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| GR01 | Patent grant |