CN205504019U - External pressure bellows control valve - Google Patents
External pressure bellows control valve Download PDFInfo
- Publication number
- CN205504019U CN205504019U CN201620217971.6U CN201620217971U CN205504019U CN 205504019 U CN205504019 U CN 205504019U CN 201620217971 U CN201620217971 U CN 201620217971U CN 205504019 U CN205504019 U CN 205504019U
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- corrugated tube
- valve
- airtight
- bellows
- spool
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Abstract
The utility model discloses an external pressure bellows control valve, pass through the thread tightening on the valve body including the disk seat, the case is airtight fixed with the bellows lower extreme, fitting with a contraceptive ring with the bellows in the bellows upper end, the lower extreme is airtight to be fixed, with airtight the fixing in bellows jecket section of thick bamboo upper end on the bellows is fitted with a contraceptive ring, bellows jecket section of thick bamboo lower extreme is airtight fixed with the guide holder, the lower extreme screw thread of valve rod is fixed with the case, and fasten once more through the round pin, case and disk seat linear sealing, the valve rod upper end is through packing, gland, the clamp plate seals on the valve gap, the valve gap lower extreme is through saw dental pad piece and body seals. The utility model discloses a case, bellows, bellows are fitted with a contraceptive ring, seal up totally between the bellows jecket section of thick bamboo, guide holder, have formed an inclosed external pressure inner chamber, and sealing performance is good, prevent that any medium from getting into the bellows inner chamber, and the bellows is according to there being most the design of the scaling of stretching example, long service life, and can reach does not have outer the leakage more than 100, 000 times, satisfy the harsh operational environment occasion that the valve forbade the outer hourglass in any point.
Description
This practicality of technical field belongs to pressure pipeline equipment technical field, relates to a kind of control valve, particularly to
A kind of external pressure corrugated tube control valve.
Background technology control valve, as the terminal performance element of robot control system(RCS), is extensively applied in all trades and professions.With
Automatic control field constantly to develop to high-end technology, the requirement to control valve is more and more higher, as field instrument
The working environment residing for control valve is harsher, control object characteristic complicated.Control valve is carried out mechanism and connects
By source of the gas (or electricity, liquid) signal, valve hole part is driven to pump in valve body, to reach pipe
In road, the regulation of processing medium controls.During the up and down motion of spool, medium can enter valve along valve rod
In lid, leaking outside from valve rod upper end, the valve stem seal of general control valve, is the position at valve gap top stuffing-box,
Realize with tetrafluoro or graphite packing.This structure be only suitable for general medium (nontoxic, leaking outside on a small quantity will not be right
Personnel and environment work the mischief).The sealing of common corrugated tube control valve valve rod, is at general control valve valve rod
On the basis of sealing, under guide holder and corrugated tube, on ring, corrugated tube and corrugated tube, between ring and valve rod, form envelope
Closing inner chamber, long-time inner chamber pressurized, corrugated tube is easily rupturable, and severe toxicity and chance air can be produced chemical reaction,
Thus the processing medium causing environmental pollution even to set off an explosion, it is not allow for any point and leaks outside.Above-mentioned control
Valve processed is difficult to reach requirement.
This practical purpose of summary of the invention is aiming at the deficiencies in the prior art, it is provided that a kind of it can be to valve rod
Make strict sealing, prevent medium from leaking outside, be resistant to again special media, simplify manufacturing process simple, use
Life-span is the external pressure corrugated tube control valve of more than 10 times of common corrugated tube control valve life-span.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of external pressure corrugated tube control valve, is threadedly secured on valve body including valve seat, spool and corrugated tube
Lower end is airtight fixing, and corrugated tube upper end is airtight with ring lower end on corrugated tube fixing, ring upper end and ripple on corrugated tube
Stricture of vagina pipe box cylinder upper end is airtight fixing, and corrugated-pipe sleeve lower end is airtight with guide holder fixing, the lower end screw thread of valve rod
Fixing with spool, and again fastened by pin, spool and valve seat linear sealing, valve rod upper end is passed through filler, is filled out
Material gland, pressing plate for sealing are on valve gap, and toothed pad and valve seal are passed through in valve gap lower end.
Owing to have employed technique scheme, ring, corrugated-pipe sleeve, guiding on spool, corrugated tube, corrugated tube
Fully seal between Zuo, define an airtight external pressure inner chamber, it is ensured that corrugated tube inner chamber airtight
Property, therefore medium does not leaks outside, and sealing property is reliable, this structure substantially increases the using effect of valve and makes
Use the life-span.
Preferably, described spool is airtight with the argon arc welding of corrugated tube lower end to be welded, corrugated tube upper end and ripple
The airtight welding of Guan Shanghuan lower end argon arc welding, on corrugated tube, ring upper end is close with the argon arc welding of corrugated-pipe sleeve upper end
Closing welding, corrugated-pipe sleeve lower end is airtight with guide holder argon arc welding welds, and forms external pressure inner chamber.
Preferably, described valve rod is threadeded with spool, is again fastened by pin, and pin is welded in spool
Upper formation concave surface, it is ensured that external pressure inner chamber.
Preferably, being provided with stroke L between described valve seat, spool and guide holder, corrugated tube design controls elongation
30%, compress 70%, control stroke L.
Preferably, described toothed pad, its anti-loosening property is stable, using effect is notable, reusability
Good, valve gap lower end and valve body are sealed by toothed pad, improve sealing property.
Preferably, described guide holder and spool coaxial line also coordinate with spool, improve spool and valve seat
Sealing property.
Preferably, described spool and valve seat, by grinding, form linear sealing.
Above-mentioned external pressure corrugated tube control valve medium flows to low in and high out, Applicable temperature-196 DEG C～566 DEG C, switch
More than 100000 times without external leakage.
This utility patent external pressure corrugated tube control valve provides the benefit that, ring on spool, corrugated tube, corrugated tube,
Fully seal between corrugated-pipe sleeve, guide holder, define an airtight external pressure inner chamber, sealing
Can be good, prevent any medium from entering corrugated tube inner chamber, corrugated tube by most having scaling to design, service life
Long, up to more than 100,000 times without external leakage, meet valve and be not allow for the harsh building ring that any point leaks outside
Border occasion.
Description of drawings 1 is the structural representation of the present invention；
Fig. 2 is A portion partial enlarged drawing in Fig. 1；
Fig. 3 is B sectional structure schematic diagram in Fig. 1；
Fig. 4 is C-C sectional structure schematic diagram in Fig. 3；
The present invention is further illustrated below in conjunction with the accompanying drawings for detailed description of the invention, but the most therefore will send out
Bright it is limited among described scope of embodiments.
See Fig. 1, Fig. 2, external pressure corrugated tube control valve, be threadedly secured on valve body 1 including valve seat 2,
Spool 3 is airtight with corrugated tube 7 lower end fixing, and corrugated tube 7 upper end is airtight with ring 8 lower end on corrugated tube fixing,
On corrugated tube, ring 8 upper end is airtight with corrugated-pipe sleeve 6 upper end fixing, corrugated-pipe sleeve 6 lower end and guide holder 4
Airtight fixing, the lower end screw thread of valve rod 14 is fixed with spool 3, and is again fastened by pin 14.1, spool 3
With valve seat 2 linear sealing, filler baffle ring 10, filler 11, gland 12, pressing plate are passed through in valve rod 14 upper end
13 are sealed on valve gap 9, and valve gap 9 lower end is sealed with valve body 1 by toothed pad 5.
Seeing Fig. 1, Fig. 2, described spool 3 is airtight with corrugated tube 7 lower end argon arc welding to be welded, corrugated tube
7 upper ends are airtight with ring on corrugated tube 8 lower end argon arc welding welds, ring 8 upper end and corrugated-pipe sleeve on corrugated tube
The 6 airtight welding of upper end argon arc welding, corrugated-pipe sleeve 6 lower end welds with argon arc welding is airtight with guide holder 4, shape
Become external pressure inner chamber.
Seeing Fig. 3, Fig. 4, described valve rod 14 is threadeded with spool 3, is again fastened by pin 14.1,
And pin 14.1 is welded on spool 3 formation concave surface, it is ensured that external pressure inner chamber.
See Fig. 1, between described valve seat 2, spool 3 and guide holder 4, be provided with stroke L, corrugated tube design control
Elongation 30% processed, compresses 70%, controls stroke L.
Seeing Fig. 1, described toothed pad 5, valve gap 9 lower end is sealed by toothed pad 5 with valve body 1,
Improve sealing property.
Seeing Fig. 1, described guide holder 4 coordinates with spool 3 coaxial line and with spool 3.Spool 3 and valve seat
2, by grinding, form linear sealing.
Although combining accompanying drawing to describe the embodiment of this practicality, but those of ordinary skill in the art being permissible
Make various deformation or amendment within the scope of the appended claims.
Claims (7)
1. an external pressure corrugated tube control valve, it is threadedly secured on valve body (1) including valve seat (2), spool (3) is airtight with corrugated tube (7) lower end fixing, corrugated tube (7) upper end is airtight with ring (8) lower end on corrugated tube fixing, on corrugated tube, ring (8) upper end is airtight with corrugated-pipe sleeve (6) upper end fixing, corrugated-pipe sleeve (6) lower end is airtight with guide holder (4) fixing, the lower end screw thread of valve rod (14) is fixed with spool (3), and again fastened by pin (14.1), spool (3) and valve seat (2) linear sealing, filler (11) is passed through in valve rod (14) upper end, gland (12), pressing plate (13) is sealed on valve gap (9), valve gap (9) lower end is sealed with valve body (1) by toothed pad (5).
2. according to the external pressure corrugated tube control valve described in claim 1, it is characterized in that: described spool (3) is airtight with corrugated tube (7) lower end argon arc welding to be welded, corrugated tube (7) upper end is airtight with ring on corrugated tube (8) lower end argon arc welding welds, on corrugated tube, ring (8) upper end is airtight with corrugated-pipe sleeve (6) upper end argon arc welding welds, corrugated-pipe sleeve (6) lower end is welded with argon arc welding is airtight with guide holder (5), forms external pressure inner chamber.
External pressure corrugated tube control valve the most according to claim 1 and 2, it is characterized in that: described valve rod (14) is threadeded with spool (3), again fastened by pin (14.1), and pin (14.1) is welded on spool formation concave surface.
External pressure corrugated tube control valve the most according to claim 1 and 2, it is characterized in that: between described valve seat (2), spool (3) and guide holder (4), be provided with stroke L, corrugated tube design controls elongation 30%, compresses 70%, controls stroke L.
External pressure corrugated tube control valve the most according to claim 1 and 2, it is characterized in that: described toothed pad (5), its anti-loosening property is stable, using effect is notable, reusability is good, and valve gap (9) lower end is sealed by toothed pad (5) with valve body (1).
External pressure corrugated tube control valve the most according to claim 1 and 2, it is characterised in that: described guide holder (4) coordinates with spool (3) coaxial line and with spool (3).
External pressure corrugated tube control valve the most according to claim 1 and 2, it is characterised in that: described spool (3) and valve seat (2), by grinding, form linear sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217971.6U CN205504019U (en) | 2016-03-21 | 2016-03-21 | External pressure bellows control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217971.6U CN205504019U (en) | 2016-03-21 | 2016-03-21 | External pressure bellows control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504019U true CN205504019U (en) | 2016-08-24 |
Family
ID=56733306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620217971.6U Active CN205504019U (en) | 2016-03-21 | 2016-03-21 | External pressure bellows control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205504019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715809A (en) * | 2016-03-21 | 2016-06-29 | 重庆嘉凯捷仪器仪表有限公司 | External pressure corrugated pipe control valve |
-
2016
- 2016-03-21 CN CN201620217971.6U patent/CN205504019U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715809A (en) * | 2016-03-21 | 2016-06-29 | 重庆嘉凯捷仪器仪表有限公司 | External pressure corrugated pipe control valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |