CN203730857U - Elastic sealing safety valve - Google Patents
Elastic sealing safety valve Download PDFInfo
- Publication number
- CN203730857U CN203730857U CN201420073668.4U CN201420073668U CN203730857U CN 203730857 U CN203730857 U CN 203730857U CN 201420073668 U CN201420073668 U CN 201420073668U CN 203730857 U CN203730857 U CN 203730857U
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing surface
- sealing face
- flap
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 238000012856 packing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to an elastic sealing safety valve comprising a valve body, a valve seat, a valve flap, a valve rod, a valve cover and a spring. The upper side of the outer circle of the sealing face of the valve flap is provided with a dovetail groove structure, the inner side of the sealing face of the valve flap is provided with an arc groove, the inner side of the arc groove is provided with an annular sealing face, and the plane of the annular sealing face corresponding to the plane of the sealing face of the valve flap is far from the sealing face of the valve seat. When the compressing force of the spring is applied to the sealing face of the valve flap, the sealing face of the valve flap is deformed elastically and form a slope outwardly, and the sealing face of the valve flap contacts with the sealing face of the valve seat in line and face manners while the annular sealing face moves downwardly to contact with the sealing face of the valve seat so as to prevent the sealing face of the valve flap from deforming continuously; in the increasing process of the working pressure of medium, the sealing specific pressure between the sealing faces of the valve flap and valve seat is retained in a required sealing specific pressure range, and the elastic sealing safety valve has the advantages that tightness is fine and the set pressure is accurate.
Description
Technical field
The utility model relates to valve field, especially relates to a kind of elastic packing safety valve.
Background technique
Existing safety valve, sealing surface of seat and valve clack sealing surface are all the sealing of face and surface structure, in the process that the working pressure of medium rises, the seal pressure between valve seat and valve clack sealing surface is more and more less, easily causes and leaks and produce the phenomenon of opening in advance.
Summary of the invention
The utility model is the defect existing for prior art, and a kind of good airproof performance, Set pressure elastic packing safety valve is accurately provided.
The utility model is realized by following technical solution:
This elastic packing safety valve comprises valve body, valve seat, flap, valve rod, valve gap, spring, valve seat is installed on body cavity, valve seat upper end is plane sealing surface, moving cooperation of the flap back side is installed in guide sleeve, flap lower end surface is provided with the sealing surface cooperatively interacting with valve seat, mainly that valve clack sealing surface cylindrical upside is shaped with oat tail groove structure, valve clack sealing surface inner side is shaped with circular groove, in circular groove inner side, form annular sealing surface, the plane of this annular sealing surface with respect to the plane of valve clack sealing surface away from sealing surface of seat.
In above technological scheme, on guide sleeve periphery, be threaded connection a Disc holder Adjusting ring, the periphery of this Disc holder Adjusting ring is shaped with adjusting screw thread, regulates screw thread and is fixed on adjusting screw on valve body and cooperatively interacts and be connected.
The utility model has the advantages that: when valve clack sealing surface is subject to used time of doing of spring-compressed power, the oat tail groove structure of valve clack sealing surface cylindrical upside, make valve clack sealing surface produce elasticity modification, outwards produce a gradient, valve clack sealing surface forms contacting of line and face with sealing surface of seat, annular sealing surface moves down with sealing surface of seat and contacts simultaneously, prevent that valve clack sealing surface from producing further distortion, in the process that the working pressure of medium rises, within seal pressure between valve clack sealing surface and valve seat surface opposite remains on the seal pressure scope of requirement, good airproof performance, Set pressure is accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structure enlarged view that in the utility model Fig. 1, I portion sealing surface is not subject to the spring-compressed masterpiece used time.
Fig. 3 is the structure enlarged view that in the utility model Fig. 1, I portion sealing surface is subject to the spring-compressed masterpiece used time.
Embodiment
Elastic packing safety valve as shown in Figure 1, comprise valve body 1, valve seat 2, flap 3, valve rod 4, valve gap 6, spring 5, valve seat 2 is installed on valve body 1 inner chamber, valve seat 2 upper ends are plane sealing surface, moving cooperation of flap 3 back sides is installed in guide sleeve 7, flap 3 lower end surfaces are provided with the sealing surface cooperatively interacting with valve seat 2, flap 3 sealing surface cylindrical upsides are shaped with oat tail groove structure, when this oat tail groove structure makes flap 3 be subject to spring 5 pressure, make valve clack sealing surface 9 easily produce elasticity modification, outwards produce a gradient.Valve clack sealing surface 9 inner sides are shaped with circular groove 10, in circular groove 10 inner sides, form annular sealing surfaces 8, the plane of this annular sealing surface 8 with respect to the plane of valve clack sealing surface 9 away from valve seat 2 sealing surfaces.When flap 3 is not when being subject to spring 5 compressive force, valve clack sealing surface 9 is plane contact with valve seat 2 sealing surfaces, has gap, as shown in Figure 2 between annular sealing surface 8 and valve seat 2 sealing surfaces; When valve clack sealing surface 9 is subject to spring 5 compressive force, valve clack sealing surface 9 produces elasticity modification, outwards produce a gradient, contacting for line and face between valve clack sealing surface 9 and valve seat 2 sealing surfaces, annular sealing surface 8 moves down with valve seat 2 sealing surfaces and contacts simultaneously, prevent that valve clack sealing surface 9 from producing further distortion, make valve clack sealing surface 9 and valve seat 2 sealing surfaces keep the seal pressure requiring, as shown in Figure 3.
On guide sleeve 7 peripheries, be threaded connection a Disc holder Adjusting ring 11, the periphery of this Disc holder Adjusting ring 11 is shaped with adjusting screw thread, regulate screw thread and be fixed on adjusting screw on valve body 1 and cooperatively interact and be connected, by adjusting screw, adjust the relative position of Disc holder Adjusting ring 11 and valve clack sealing surface 9, realize the Lift of adjusting flap 3.
Claims (2)
1. an elastic packing safety valve, comprise valve body (1), valve seat (2), flap (3), valve rod (4), valve gap (6), spring (5), valve seat (2) is installed on valve body (1) inner chamber, valve seat (2) upper end is plane sealing surface, moving cooperation of flap (3) back side is installed in guide sleeve (7), flap (3) lower end surface is provided with the sealing surface cooperatively interacting with valve seat (2), it is characterized in that flap (3) sealing surface cylindrical upside is shaped with oat tail groove structure, valve clack sealing surface (9) inner side is shaped with circular groove (10), in circular groove (10) inner side, form annular sealing surface (8), the plane of this annular sealing surface (8) with respect to the plane of valve clack sealing surface (9) away from valve seat (2) sealing surface.
2. elastic packing safety valve according to claim 1, it is characterized in that being threaded connection a Disc holder Adjusting ring (11) on guide sleeve (7) periphery, the periphery of this Disc holder Adjusting ring (11) is shaped with adjusting screw thread, regulates screw thread and is fixed on adjusting screw on valve body (1) and cooperatively interacts and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073668.4U CN203730857U (en) | 2014-02-18 | 2014-02-18 | Elastic sealing safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073668.4U CN203730857U (en) | 2014-02-18 | 2014-02-18 | Elastic sealing safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730857U true CN203730857U (en) | 2014-07-23 |
Family
ID=51200932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420073668.4U Expired - Lifetime CN203730857U (en) | 2014-02-18 | 2014-02-18 | Elastic sealing safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730857U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180033A (en) * | 2014-08-01 | 2014-12-03 | 浙江恒华阀门有限公司 | Piston balanced type pressure releasing valve |
| CN104482261A (en) * | 2014-12-08 | 2015-04-01 | 章华 | High-temperature and high-pressure spring safety valve with heat compensation and elastic compensation sealing surface |
-
2014
- 2014-02-18 CN CN201420073668.4U patent/CN203730857U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180033A (en) * | 2014-08-01 | 2014-12-03 | 浙江恒华阀门有限公司 | Piston balanced type pressure releasing valve |
| CN104482261A (en) * | 2014-12-08 | 2015-04-01 | 章华 | High-temperature and high-pressure spring safety valve with heat compensation and elastic compensation sealing surface |
| CN104482261B (en) * | 2014-12-08 | 2017-07-18 | 章华 | HTHP spring safety valve with thermal compensation and elastic compensating sealing surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |