CN204459307U - Anti-seal circle comes off one-way valve - Google Patents
Anti-seal circle comes off one-way valve Download PDFInfo
- Publication number
- CN204459307U CN204459307U CN201420864930.7U CN201420864930U CN204459307U CN 204459307 U CN204459307 U CN 204459307U CN 201420864930 U CN201420864930 U CN 201420864930U CN 204459307 U CN204459307 U CN 204459307U
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- CN
- China
- Prior art keywords
- seal
- way valve
- comes
- spool
- valve body
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- 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 - Fee Related
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Abstract
The utility model discloses a kind of anti-seal circle to come off one-way valve, comprise valve body, the spool being formed at the circulation passage in valve body and can moving around in valve body, described valve interior wall is provided with the annular boss for an accommodating seal ring with described spool contacting point, is provided with for by spacing for the described seal ring falcon limit on annular boss outside annular boss; Described seal ring is provided with chimb towards side, described falcon limit.This one-way valve in-site installation is convenient, has the latus rectum, the adeciduate advantage of seal ring that adapt to large discharge, solves the problem that can not keep sealing after repeatedly high pressure action test simultaneously.
Description
Technical field
The utility model belongs to fire-fighting domain, especially relates to a kind of anti-seal circle for gaseous extinguishing agent traffic organising and to come off one-way valve.
Background technique
GB25972 " gas extinguishing system and parts " 5.8.4 requirement of strength specifies, after extinguishing agent one-way valve carries out hydraulic pressure strength test, does not answer seepage, distortion or damage." clean agent fire extinguishing system standard " 4.7.1 requires to specify: extinguishing agent one-way valve should stand the action test of 500 circulations under maximum service pressure, and any damage phenomenon can not be produced, and the requirement of Section 4.10 (valve leak test) should be met after this test.Because extinguishing agent is in the process of spurting, the stream pressure of maximum 15MPa can be born, easily cause seal ring to come off.Substantially all can there is similar problem when carrying out action test in extinguishing agent one-way valve domestic at present, be difficult to meet standard-required.
Model utility content
The utility model in order to overcome the deficiencies in the prior art, provide a kind of can under the state of high pressure draught intact form, the anti-seal circle that still can realize sealing after high pressure action test comes off one-way valve.
To achieve these goals, the utility model is by the following technical solutions: a kind of anti-seal circle comes off one-way valve, comprise valve body, the spool being formed at the circulation passage in valve body and can moving around in valve body, described valve interior wall is provided with the annular boss for an accommodating seal ring with described spool contacting point, is provided with for by spacing for the described seal ring falcon limit on annular boss outside annular boss; Described seal ring is provided with chimb towards side, described falcon limit.
Further, be connected with a spring on rear side of described spool, this spring at front end and spool offset, and rear end acts on a spring pedestal.
Further, described spool comprises the seal coordinated with valve seal and the guide rod matched with described spring pedestal, and spring pedestal is provided with the pilot hole slided for guide rod.
Further, described spring pedestal is evenly equipped with the pore of multiple supplied gas circulation.
Described spring pedestal is threaded with described valve interior wall.
Further, described spring pedestal is provided with boss towards spool side.
Further, described seal ring comprises metal frame and is coated on the rubber body outside this metal frame.
The inwall at described valve body two ends is respectively equipped with the seal groove for accommodating seal washer.
Further, the external frame of described valve body is symmetrical hexahedron.
In sum, the utility model has the following advantages: this one-way valve in-site installation is convenient, has the latus rectum, the adeciduate advantage of seal ring that adapt to large discharge, solves the problem that can not keep sealing after repeatedly high pressure action test simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A place partial enlarged drawing one of Fig. 1.
Fig. 3 is the A place partial enlarged drawing two of Fig. 1.
Fig. 4 is the structural representation of the utility model medi-spring base.
Fig. 5 is the side view of Fig. 4.
Embodiment
In order to make those skilled in the art person better understand the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, clear, complete description is carried out to the technological scheme in the utility model embodiment.
As shown in Figure 1, a kind of anti-seal circle comes off one-way valve, and the spool 4 comprising valve body 2, be formed at the circulation passage 21 in valve body and can move around in valve body, is connected with a spring 5 on rear side of spool 4, this spring at front end and spool offset, and rear end acts on a spring pedestal 6; Outer wall on front side of spool and valve interior wall are tightly connected, concrete, valve body 2 inwall is provided with an annular boss 22 with described spool 4 contacting point, annular boss is provided with a seal ring 3, the outside of annular boss 22 is provided with for by spacing for the described seal ring 3 falcon limit 23 on annular boss, described seal ring 3 is provided with chimb 33 towards side, described falcon limit 23, concrete, as shown in Figure 2, for the structural representation before the pressure of rear top installed by seal ring 3, before seal ring is installed, described falcon limit 23 protrudes from spool inwall and arranges; Fig. 3 is the structural representation behind compression set position, seal ring top, seal ring 3 is installed on valve body 2 by the mode of top pressure, concrete, first seal ring is placed in annular boss, spool 4 is installed on valve body 2, by described falcon limit to seal ring sidewall top pressure, seal ring 3 is pressed on annular boss, forms sealing surface with spool.Further, the external frame of described valve body 2 is hexahedron, facilitates the installation and removal of on-the-spot spanner; Seal groove 27, first seal ring 11, second seal ring 17 that threaded connection place on the inwall at described valve body two ends is respectively equipped with for accommodating seal washer is arranged in the seal groove at two ends, forms static seal in use with corresponding pipeline junction.
Concrete, in the present embodiment, described spool comprises the seal 41 coordinated with valve seal and the guide rod 42 matched with described spring pedestal, spring pedestal is provided with the pilot hole 62 slided for guide rod, pilot hole 62 pairs of guide rods play a leading role, make guide rod do straight line motion along pilot hole.Spring pedestal is provided with boss 66, and this boss protrudes towards spool side and arranges, and facilitates location during spring fitting; Described spring pedestal is evenly equipped with the pore 61 of multiple supplied gas circulation, avoids producing the excessive generation body distortion of local pressure, meet the demand of system to flow simultaneously.
Further, described spring pedestal is threaded with described valve interior wall, is carried out the size of control spring 5 pretightening force by the stroke of control spring base 6, thus reaches the effect of opening force control.
In order to better positioning seal ring, in the present embodiment, described seal ring is made up of metal frame and the rubber body be coated on outside this metal frame, and the seal ring locating effect with metal frame is better, more difficult drop-off.
During use, air-flow backs down spool 4, and discharge from the pore of spring pedestal 6, as shown in Figure 4,5, seal ring 3 and valve body 2 kill bonding, thus ensure not blown off under the condition of high gas flow, spool 4 is coordinated with the mode of pilot hole by guide rod with spring pedestal 6, guarantees that spool can normal reset after opening.
Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Claims (9)
1. an anti-seal circle comes off one-way valve, comprise valve body (2), the spool (4) being formed at the circulation passage (21) in valve body and can moving around in valve body, it is characterized in that: described valve body (2) inwall is provided with the annular boss (22) for an accommodating seal ring (3) with described spool contacting point, be provided with for by spacing for described seal ring (3) the falcon limit (23) on annular boss outside annular boss; Described seal ring (3) is provided with chimb (33) towards side, described falcon limit.
2. anti-seal circle according to claim 1 comes off one-way valve, it is characterized in that: described spool (4) rear side is connected with a spring (5), and this spring at front end and spool offset, and rear end acts on a spring pedestal (6).
3. anti-seal circle according to claim 2 comes off one-way valve, it is characterized in that: described spool comprises the seal (41) coordinated with valve seal and the guide rod (42) matched with described spring pedestal, spring pedestal is provided with the pilot hole (62) slided for guide rod.
4. anti-seal circle according to claim 3 comes off one-way valve, it is characterized in that: the pore (61) described spring pedestal being evenly equipped with the circulation of multiple supplied gas.
5. anti-seal circle according to claim 2 comes off one-way valve, it is characterized in that: described spring pedestal is threaded with described valve interior wall.
6. anti-seal circle according to claim 2 comes off one-way valve, it is characterized in that: described spring pedestal is provided with boss (66) towards spool side.
7. anti-seal circle according to claim 1 comes off one-way valve, it is characterized in that: described seal ring comprises metal frame and is coated on the rubber body outside this metal frame.
8. anti-seal circle according to claim 1 comes off one-way valve, it is characterized in that: the inwall at described valve body two ends is respectively equipped with the seal groove (27) for accommodating seal washer.
9. anti-seal circle according to claim 1 comes off one-way valve, it is characterized in that: the external frame of described valve body (2) is symmetrical hexahedron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864930.7U CN204459307U (en) | 2014-12-31 | 2014-12-31 | Anti-seal circle comes off one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864930.7U CN204459307U (en) | 2014-12-31 | 2014-12-31 | Anti-seal circle comes off one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459307U true CN204459307U (en) | 2015-07-08 |
Family
ID=53666192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420864930.7U Expired - Fee Related CN204459307U (en) | 2014-12-31 | 2014-12-31 | Anti-seal circle comes off one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204459307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369207A (en) * | 2016-08-30 | 2017-02-01 | 兰州空间技术物理研究所 | Micro flow proportional control valve |
-
2014
- 2014-12-31 CN CN201420864930.7U patent/CN204459307U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369207A (en) * | 2016-08-30 | 2017-02-01 | 兰州空间技术物理研究所 | Micro flow proportional control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20191231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |