CN206845907U - A kind of fast row's formula cut-off blowoff valve - Google Patents
A kind of fast row's formula cut-off blowoff valve Download PDFInfo
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- CN206845907U CN206845907U CN201720435575.5U CN201720435575U CN206845907U CN 206845907 U CN206845907 U CN 206845907U CN 201720435575 U CN201720435575 U CN 201720435575U CN 206845907 U CN206845907 U CN 206845907U
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- valve
- plunger
- medium
- valve body
- plunger bushing
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Abstract
The utility model provides a kind of fast row's formula cut-off blowoff valve, including valve body, valve seat, valve rod, bonnet, plunger and plunger are set in valve body inlet passage, plunger bushing is vertically connected above valve seat, plunger bushing is cylindrical structure, and the medium through hole of a rectangle is offered by same intervals on the outer wall of plunger bushing bottom, medium through hole upper end rises to position flush during top with plunger, medium through hole lower end is higher than the valve body inlet channel bottom to be leant with valve seat, when row's formula cut-off blowoff valve is opened soon, medium flows into valve outlet passage from valve body inlet passage through plunger bushing side wall, the utility model has blowdown speed fast, seal the advantages that service life is long.
Description
Technical field
The utility model is related to valve technology field, more specifically for, more particularly to a kind of fast row's formula cut-off blowdown
Valve.
Background technology
Valve is widely used in oil, natural gas, coal gas, oil liquefied gas and oil refining, airport, chemical industry, Oil ＆ Gas Storage
Deng pipeline on make closed circuit device.
With reference to existing patent (application number：201410656634.2), disclose a kind of low noise throttle cut-off blowoff valve, category
In valve field.Low noise throttle stop emptying valve valve body, valve rod, support, bonnet should be included, noise-reducing group is provided with valve body
Part and flap component, noise-reducing component include valve pocket, sleeve；The valve pocket is tubular, is vertically installed at and the same axis of valve rod
On, valve pocket lower circumference is provided with least one set of throttling channel different in size；The bottom of the throttling channel is on the same axis, each to save
Chute is distributed in periodic symmetry；The bush whorl is connected in valve body inlet passage, and sleeve inner is waveform.
Although above-mentioned existing patent is improved the noise reduction of valve, in actual applications, choke stop evacuation valve
It can be applied in blow-off line, so that also referred to as blowoff valve.It is insufficient below existing blowoff valve generally existing：
1st, because medium is entered from valve pocket bottom, then flowed out from throttling channel, be either turned on and off valve body mistake
Cheng Zhong, medium can wash away to body base for a long time, and then be unfavorable for the service life of valve pocket；
2nd, used sealing ring contacts with valve sleeving inner wall, and after being used for a while, sealing effectiveness can decline；
3, although employing the structure of throttling channel to reduce noise, but the flow of medium is also sacrificed simultaneously, actual use
During, blowdown speed is slower.
Utility model content
Technical problem
The utility model is used to solve above-mentioned to point out in the prior art, to take into account noise and flow velocity of the medium in blowoff valve
The problem of undesirable, and above-mentioned the problem of may not pointing out other.
Technical scheme
A kind of fast row's formula cut-off blowoff valve, it includes valve body, valve seat, valve rod, bonnet, and plunger and plunger are set on valve body
In access road, plunger bushing is vertically connected above valve seat, and plunger bushing is cylindrical structure, and is pressed on the outer wall of plunger bushing bottom
Same intervals offer the medium through hole of a rectangle, and medium through hole upper end rises to position flush during top with plunger, is situated between
Matter through hole lower end is higher than the valve body inlet channel bottom that is leant with valve seat, when row's formula cut-off blowoff valve is opened soon, medium from
Valve body inlet passage flows into valve outlet passage through plunger bushing side wall.
Preferably, the bottom of valve body inlet passage concaves to form circular arc.
Beneficial effect
Because the utility model has advantages below：1st, valve pocket surrounding improves valve using the rectangular flow road junction being evenly arranged
The opening feature of door, reach the purpose of valve quick drain；2nd, the flow passage structure of medium upper entering and lower leaving, medium is avoided to sealing surface
Directly wash away, improve the valve seal life-span.
Brief description of the drawings
, below will be to required described in specific embodiment in order to illustrate more clearly of the scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those skilled in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is that a kind of fast row's formula of the utility model ends the structure principle chart of blowoff valve in one embodiment.
Fig. 2 is that a kind of fast row's formula of the utility model ends the structure principle chart of blowoff valve in another embodiment.
Fig. 3 is shown as in Fig. 2 the partial enlarged drawing at A.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on embodiment of the present utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained all other embodiment, belong to the scope of the utility model protection.
It refer to figure
See Fig. 1, there is provided a kind of fast row's formula cut-off blowoff valve, it includes valve body 1, valve seat 2, valve rod 5, bonnet 6, wherein,
Plunger 3 and plunger bushing 4 are arranged in valve body inlet passage, and plunger bushing 4 is vertically connected above valve seat, and plunger bushing 4 is cylinder knot
Structure, and the medium through hole 7 of 4 rectangles, medium through hole upper end and post are offered on the outer wall of the bottom of plunger bushing 4 by same intervals
Plug 3 rises to position flush during top, and the lower end of medium through hole 7 is higher than the valve body inlet channel bottom to be leant with valve seat,
When row's formula cut-off blowoff valve is opened soon, medium flows into valve outlet passage from valve body inlet passage through the side wall of plunger bushing 4.
The operation principle of fast row's formula cut-off blowoff valve is：Blowoff valve, which is connected on pipeline, plays blowdown, rotates hand
Valve rod lifting is taken turns, valve rod drives plunger lifting to reach valve opening and the function of closing.
In valve opening, due to medium from valve body inlet passage entrance after with the surrounding wall contacts of plunger bushing 4, then lead to
The medium through hole crossed on plunger bushing 4 enters in plunger bushing 4 and enters valve outlet passage from seat bottom portion, because medium through hole is square
Shape, aperture is big, and medium can be flowed rapidly into valve pocket by the medium through hole, forms eddy flow, and then flowing into valve body from valve seat goes out
Mouth passage, the noise of blowoff valve so both can be effectively reduced, the effect of rapid pollution discharging can be realized again.
When valve is closed, due to medium from valve body inlet passage entrance after with plunger 3 and the contacts side surfaces of plunger bushing 4, no
Plunger seal face can be directly washed away, so as to greatly prolong the service life of valve seal.
As a kind of preferred embodiment, the bottom of valve body inlet passage concaves to form circular arc, so as to form one
Have acclive bottom faces, there can be certain cushioning effect to the medium of entrance, avoid the lateral forces of plunger bushing 4 excessive.
Further, in order to improve the sealing of blowoff valve in the utility model, Fig. 2 and Fig. 3 are seen, the utility model also carries
Another fast row's formula cut-off blowoff valve is supplied, it has unique plunger sealing structure, and the sealing mechanism includes plunger sealing washer 9
With sealing ring trim ring 8, wherein, plunger base inwardly has a continuous step from edge, and the section of plunger sealing washer 9 is ladder
Shape, the plunger sealing washer 9 are arranged at the intermediate step for the bottom of step, and the section at the edge of sealing ring trim ring 8 is also ladder
Plunger sealing washer 9 is pressed at intermediate step by shape, the edge of sealing ring trim ring 8, and sealing ring trim ring 8 is fixedly connected with plunger.
By said structure, contact of the plunger sealing washer 9 with plunger bushing can be avoided, while plunger sealing washer 9 uses ladder
The structure of shape, preferable closed type, therefore, sealing can all be played on horizontal and vertical by the cooperation of sealing ring trim ring 8
Compared with general sealing mechanism more preferably.
In summary, because valve mechanism of the present utility model is using the circulation style of medium upper entering and lower leaving and unique post
Combined sealing structure is filled in, therefore it has advantages below：
1st, valve pocket surrounding is improved the opening feature of valve, is reached valve and quickly arranged using the rectangular flow road junction being evenly arranged
The purpose put；
2nd, the flow passage structure of medium upper entering and lower leaving, medium directly washing away to sealing surface is avoided, improves the valve seal longevity
Life.
Claims (2)
1. a kind of fast row's formula cut-off blowoff valve, it includes valve body, valve seat, valve rod, bonnet, it is characterised in that：Plunger and plunger bushing
It is arranged in valve body inlet passage, plunger bushing is vertically connected above valve seat, and plunger bushing is cylindrical structure, and in plunger bushing bottom
Outer wall on the medium through hole of rectangle is offered by same intervals, medium through hole upper end rises to position during top with plunger
Flush, medium through hole lower end are higher than the valve body inlet channel bottom to be leant with valve seat, are opened in row's formula cut-off blowoff valve soon
When, medium flows into valve outlet passage from valve body inlet passage through plunger bushing side wall.
2. fast row's formula cut-off blowoff valve according to claim 1, it is characterised in that：The bottom of valve body inlet passage concaves
Form circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435575.5U CN206845907U (en) | 2017-04-25 | 2017-04-25 | A kind of fast row's formula cut-off blowoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435575.5U CN206845907U (en) | 2017-04-25 | 2017-04-25 | A kind of fast row's formula cut-off blowoff valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845907U true CN206845907U (en) | 2018-01-05 |
Family
ID=60793100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720435575.5U Active CN206845907U (en) | 2017-04-25 | 2017-04-25 | A kind of fast row's formula cut-off blowoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845907U (en) |
-
2017
- 2017-04-25 CN CN201720435575.5U patent/CN206845907U/en active Active
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