CN206943515U - A kind of safety valve with dual-seal function - Google Patents
A kind of safety valve with dual-seal function Download PDFInfo
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- CN206943515U CN206943515U CN201720923334.5U CN201720923334U CN206943515U CN 206943515 U CN206943515 U CN 206943515U CN 201720923334 U CN201720923334 U CN 201720923334U CN 206943515 U CN206943515 U CN 206943515U
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- valve
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- sealing ring
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Abstract
The utility model discloses a kind of safety valve with dual-seal function, including emergency valve seat and valve body, the emergency valve seat links together with valve body, pressure air through hole is provided with the emergency valve seat, in the valve body, the exit of pressure air through hole is provided with valve block, the valve block is connected with the guide rod being arranged in valve body, adjustment spring is socketed with the guide rod, the row's of being provided with gross blow hole on the valve body, in row's gross blow hole and valve body, valve block upper chambers connect, pass through valve block control pressure air hole and the break-make of chamber, the sealing ring that end face seal and self sealing structure are cooperatively formed with valve block is provided with the exit of the pressure air through hole.The utility model has the effect of dual-seal at valve port, the sealing reliability of safety valve is effectively increased, and safety valve of the present utility model, in exhaust, the pressure air into valve block upper chambers can be such that valve block faster closes, the closing presure at valve port is improved, saves pressure air.
Description
Technical field
The utility model belongs to safety valve technical field, more particularly to a kind of double for limiting having for air pressure size
The safety valve of resealing function.
Background technology
Safety valve is mainly used in limiting the size of air pressure, and the pressure more than setting value is arranged to air, makes pressure drop
It is low in range of set value, and setting value can adjust.
Existing safety valve mainly has metal grinding face and metal valve port rubber parts to seal two kinds of forms.Wherein, metal grinding
The band that face is formed, after certain time uses, cut occurs in abradant surface, sews safety valve, endurance quality
It is not high；And metal valve port rubber parts sealing structure is when pressure is close to gas vent pressure of safety valve, sealing property can reduce, and work as
When having foreign matter between metal valve port and rubber parts, safety valve, which can produce, sews.
Utility model content
Goal of the invention of the present utility model is：For above-mentioned problem, there is provided one kind has double sealing effect,
The high safety valve of sealing reliability.
What the technical solution of the utility model was realized in：A kind of safety valve with dual-seal function, including peace
Full valve seat and valve body, the emergency valve seat are linked together with valve body, and pressure air through hole is provided with the emergency valve seat,
It is characterized in that：In the valve body, the exit of pressure air through hole be provided with valve block, the valve block and be arranged in valve body
Guide rod connection, adjustment spring is socketed with the guide rod, the row's of being provided with gross blow hole on the valve body, the row is big
Stomata is interior with valve body, valve block upper chambers connect, by valve block control pressure air hole and the break-make of chamber, in the pressure
The exit of air hole is provided with the sealing ring that end face seal and self sealing structure are cooperatively formed with valve block.
Safety valve described in the utility model with dual-seal function, it is provided with outer ring convex on the sealing ring
Portion and inner ring lip are played, the outer shroud lug boss of the sealing ring forms end face seal structure with the end face compression fit of valve block,
The inner ring lip of the sealing ring is pressed on valve block lower surface in the presence of pressure air and forms self sealing structure, the sealing
The outer shroud lug boss and inner ring lip of circle seal to the end face of valve block.
Safety valve described in the utility model with dual-seal function, it is provided with top on the emergency valve seat
Annular groove and lower annular recess, the superstructure of the sealing ring are placed in the upper, annular groove of emergency valve seat, the sealing
The bottom annulus stop ledge of circle is placed in the lower annular recess of emergency valve seat.
Safety valve described in the utility model with dual-seal function, its described sealing ring in its natural state, its
Outer shroud boss is in outside the upper, annular groove of emergency valve seat, and the raised height of outer shroud lug boss is higher than the end of emergency valve seat
Face, when valve block compresses the outer shroud lug boss of sealing ring, the outer shroud lug boss of the sealing ring produces certain deformation and pressed
It is attached in the upper, annular groove of emergency valve seat.
Safety valve described in the utility model with dual-seal function, the outer shroud lug boss of its sealing ring is in circle
Arcuate structure, the outer shroud lug boss are clamped to form end face seal structure by the step of valve block and emergency valve seat, the inner ring lip
Mouth is pressed on valve block end face by pressure air and forms self sealing structure, and the end face seal structure and self sealing structure are separate
It is independent of each other, and is the double sealing structure formed to same seal face.
Safety valve described in the utility model with dual-seal function, its described row's gross blow hole on valve body obliquely
Set.
Safety valve described in the utility model with dual-seal function, it is provided between the valve block and valve body
Guide sleeve.
Safety valve described in the utility model with dual-seal function, its described guide rod one end are pressed on valve block
On, its other end slip cap is connected to adjustment swivel nut, and the adjustment swivel nut periphery is threadedly coupled with valve interior wall, the adjustment bullet
Spring one end is resisted against the step end face of guide rod, and its other end is resisted against the end face of adjustment swivel nut, by adjusting swivel nut in valve body
Interior axial location, the preload pressure of spring is adjusted with adjustment.
Safety valve described in the utility model with dual-seal function, its it is described adjustment swivel nut above be provided with
The nut of valve body connection, is provided with the spiracle connected with the spring housing on valve body top on the valve body.
The utility model can form the sealing ring of end face seal and self sealing structure by being set at valve port with valve block,
Make the effect at valve port with dual-seal, so as to effectively increase the sealing reliability of safety valve, avoid safety valve generation
The problem of sewing, and safety valve of the present utility model, in exhaust, the pressure air into valve block upper chambers can make valve block
Faster close, improve the closing presure at valve port, save pressure air.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of sealing ring in the utility model.
Marked in figure：1 is emergency valve seat, and 1a is upper, annular groove, and 1b is lower annular recess, and 2 be valve body, and 3 be that pressure is empty
Vent hole, 4 be valve block, and 5 be guide rod, and 6 be adjustment spring, and 7 be row's gross blow hole, and 8 be chamber, and 9 be sealing ring, and 9a is outer ring convex
The portion of rising, 9b are inner ring lip, and 10 be adjustment swivel nut, and 11 be nut, and 12 be spiracle, and 13 be guide sleeve.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in figure 1, a kind of safety valve with dual-seal function, including emergency valve seat 1 and valve body 2, the safety
Valve seat 1 is linked together with valve body 2, and pressure air through hole 3 is provided with the emergency valve seat 1, in the valve body 2, pressure
The exit of power air hole 3 is provided with valve block 4, and guide sleeve 13, the valve block 4 are provided between the valve block 4 and valve body 2
It is connected with the guide rod 5 being arranged in valve body 2, adjustment spring 6 is socketed with the guide rod 5, is set on the valve body 2
There is row's gross blow hole 7, row's gross blow hole 7 is set obliquely on valve body 2, makes it have certain dust-proof, waterproof effect, the row
In gross blow hole 7 and valve body 2, the upper chambers 8 of valve block 4 connect, by the control pressure air hole 3 of valve block 4 and the break-make of chamber 8,
The sealing ring that end face seal and self sealing structure are cooperatively formed with valve block 4 is provided with the exit of the pressure air through hole 3
9, impulsive force when valve block is beated will not have a damaging influence to the sealing property of sealing ring, and endurance quality is more preferable.
As shown in Fig. 2 outer shroud lug boss 9a and inner ring lip 9b, the sealing ring 9 are provided with the sealing ring 9
The end face compression fit of outer shroud lug boss 9a and valve block 4 form end face seal structure, the inner ring lip 9b of the sealing ring 9 exists
The lower surface of valve block 4 is pressed in the presence of pressure air and forms self sealing structure, the outer shroud lug boss 9a of the sealing ring 9 and interior
Ring lip 9b seals to the end face of valve block 4.
Wherein, upper, annular groove 1a and lower annular recess 1b, the sealing ring 9 are provided with the emergency valve seat 1
Superstructure be placed in the upper, annular groove 1a of emergency valve seat 1, the bottom annulus stop ledge of the sealing ring 9 is placed in safety
In the lower annular recess 1b of valve seat 1, in its natural state, its outer shroud lug boss 9a is located at the upper of emergency valve seat 1 to the sealing ring 9
Outside portion annular groove 1a, and the height of outer shroud lug boss 9a projections is higher than the end face of emergency valve seat 1, when valve block 4 is by outside sealing ring 9
When ring lug boss 9a is compressed, the outer shroud lug boss 9a of the sealing ring 9 produces certain deformation and overlayed in the upper of emergency valve seat 1
In portion annular groove 1a.
In the present embodiment, the outer shroud lug boss 9a of the sealing ring 9 is in arc-shaped structure, the outer shroud lug boss 9a quilts
The step of valve block 4 and emergency valve seat 1 clamps to form end face seal structure, and the inner ring lip 9b is pressed on valve block by pressure air
4 end faces form self sealing structure, and the end face seal structure and self sealing structure are independent of each other, and are to same close independently of each other
The double sealing structure that end-blocking face is formed, if that is, end face seal structure fails, enter in pressure air fashionable, made by pressure air
Sealing structure, the feelings for effectively avoiding pressure air from sewing are formed with inner ring lip, making inner ring lip be pressed on valve block end face
Condition.
Wherein, described one end of guide rod 5 is pressed on valve block 4, and its other end slip cap is connected to adjustment swivel nut 10, described
The adjustment periphery of swivel nut 10 is connected with the inner thread of valve body 2, and described adjustment spring 6 one end is resisted against the step end face of guide rod 5, its
The other end is resisted against the end face of adjustment swivel nut 10, by adjusting axial location of the swivel nut 10 in valve body 2, to adjust adjustment spring
6 preload pressure, the nut 11 being connected with valve body 2 is provided with above the adjustment swivel nut 10, can prevented in foreign matter intrusion valve
Portion, the spiracle 12 connected with the spring housing on the top of valve body 2 is provided with the valve body 2.
Operation principle of the present utility model is：Pressure air enters from pressure air through hole, and sealing ring has inner ring lip
Mouthful, be fitted in valve block bottom surface, when pressure air through hole has pressure, be here formed as a self sealing structure, while sealing ring
Outer shroud is an arc-shaped convex portion, compresses to form end face seal by valve block, so as to form dual-seal band sealing structure.Work as pressure
When power exceedes setting value, pressure air pushes away movable valve block and overcomes adjustment spring resistance and move up, the sealing of sealing ring and valve block composition
Band failure, pressure air flow to valve block upper chamber, then the row of flow direction gross blow hole row from valve port of the pressure air through hole through opening
To air.The pressure air for flowing into valve block upper chamber forms back pressure above valve block, valve block is closed in time, improves valve port
Locate closing presure, save pressure air.
When needing to adjust initial set value, adjustment swivel nut is screwed in into valve body, setting value gradually increases, if swivel nut will be adjusted
Valve body is screwed out, then setting value is gradually reduced, and after setting value is adjusted in place, is locked by nut, is prevented set point change.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of safety valve with dual-seal function, including emergency valve seat（1）And valve body（2）, the emergency valve seat（1）With
Valve body（2）Link together, in the emergency valve seat（1）On be provided with pressure air through hole（3）, it is characterised in that：Described
Valve body（2）Interior, pressure air through hole（3）Exit be provided with valve block（4）, the valve block（4）With being arranged on valve body（2）Interior
Guide rod（5）Connection, in the guide rod（5）On be socketed with adjustment spring（6）, in the valve body（2）On the row's of being provided with air
Hole（7）, row's gross blow hole（7）With valve body（2）Interior, valve block（4）Upper chambers（8）Connection, passes through valve block（4）Control pressure is empty
Vent hole（3）With chamber（8）Break-make, in the pressure air through hole（3）Exit be provided with and valve block（4）Cooperatively form
End face seal and the sealing ring of self sealing structure（9）.
2. the safety valve according to claim 1 with dual-seal function, it is characterised in that：In the sealing ring（9）
On be provided with outer shroud lug boss（9a）And inner ring lip（9b）, the sealing ring（9）Outer shroud lug boss（9a）With valve block（4）
End face compression fit form end face seal structure, the sealing ring（9）Inner ring lip（9b）In the presence of pressure air
It is pressed on valve block（4）Lower surface forms self sealing structure, the sealing ring（9）Outer shroud lug boss（9a）With inner ring lip（9b）
To valve block（4）End face sealed.
3. the safety valve according to claim 2 with dual-seal function, it is characterised in that：In the emergency valve seat
（1）On be provided with upper, annular groove（1a）And lower annular recess（1b）, the sealing ring（9）Superstructure be placed in safety valve
Seat（1）Upper, annular groove（1a）It is interior, the sealing ring（9）Bottom annulus stop ledge be placed in emergency valve seat（1）Bottom
Annular groove（1b）It is interior.
4. the safety valve according to claim 3 with dual-seal function, it is characterised in that：The sealing ring（9）
Under nature, its outer shroud lug boss（9a）Positioned at emergency valve seat（1）Upper, annular groove（1a）Outside, and outer shroud lug boss（9a）
Raised height is higher than emergency valve seat（1）End face, when valve block（4）By sealing ring（9）Outer shroud lug boss（9a）During compression, institute
State sealing ring（9）Outer shroud lug boss（9a）Produce certain deformation and overlayed in emergency valve seat（1）Upper, annular groove（1a）
It is interior.
5. the safety valve according to claim 2 with dual-seal function, it is characterised in that：The sealing ring（9）'s
Outer shroud lug boss（9a）In arc-shaped structure, the outer shroud lug boss（9a）By valve block（4）And emergency valve seat（1）Step clamp
Form end face seal structure, the inner ring lip（9b）Valve block is pressed on by pressure air（4）End face forms self sealing structure, institute
State end face seal structure and self sealing structure is independent of each other independently of each other, and be the dual-seal knot formed to same seal face
Structure.
6. the safety valve according to claim 1 with dual-seal function, it is characterised in that：Row's gross blow hole（7）
In valve body（2）On set obliquely.
7. the safety valve according to claim 1 with dual-seal function, it is characterised in that：In the valve block（4）With
Valve body（2）Between be provided with guide sleeve（13）.
8. the safety valve as claimed in any of claims 1 to 7 with dual-seal function, it is characterised in that：Institute
State guide rod（5）One end is pressed on valve block（4）On, its other end slip cap is connected to adjustment swivel nut（10）, the adjustment swivel nut
（10）Periphery and valve body（2）Inner thread connects, the adjustment spring（6）One end is resisted against guide rod（5）Step end face, its
The other end is resisted against adjustment swivel nut（10）End face, by adjusting swivel nut（10）In valve body（2）Interior axial location, to adjust
Whole spring（6）Preload pressure.
9. the safety valve according to claim 8 with dual-seal function, it is characterised in that：In the adjustment swivel nut
（10）Top is provided with and valve body（2）The nut of connection（11）, in the valve body（2）On be provided with and valve body（2）The bullet on top
The spiracle of spring room connection（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720923334.5U CN206943515U (en) | 2017-07-27 | 2017-07-27 | A kind of safety valve with dual-seal function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720923334.5U CN206943515U (en) | 2017-07-27 | 2017-07-27 | A kind of safety valve with dual-seal function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206943515U true CN206943515U (en) | 2018-01-30 |
Family
ID=61371729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720923334.5U Active CN206943515U (en) | 2017-07-27 | 2017-07-27 | A kind of safety valve with dual-seal function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206943515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178637A (en) * | 2017-07-27 | 2017-09-19 | 眉山中车制动科技股份有限公司 | A kind of safety valve with dual-seal function |
-
2017
- 2017-07-27 CN CN201720923334.5U patent/CN206943515U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178637A (en) * | 2017-07-27 | 2017-09-19 | 眉山中车制动科技股份有限公司 | A kind of safety valve with dual-seal function |
| CN107178637B (en) * | 2017-07-27 | 2018-08-31 | 眉山中车制动科技股份有限公司 | A kind of safety valve with dual-seal function |
| WO2019019523A1 (en) * | 2017-07-27 | 2019-01-31 | 眉山中车制动科技股份有限公司 | Safety valve having double-sealing function |
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