CN203131135U - Pressure-limiting valve - Google Patents
Pressure-limiting valve Download PDFInfo
- Publication number
- CN203131135U CN203131135U CN 201320097296 CN201320097296U CN203131135U CN 203131135 U CN203131135 U CN 203131135U CN 201320097296 CN201320097296 CN 201320097296 CN 201320097296 U CN201320097296 U CN 201320097296U CN 203131135 U CN203131135 U CN 203131135U
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- CN
- China
- Prior art keywords
- valve
- valve body
- valve rod
- sealing gasket
- spring
- 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 - Fee Related
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Abstract
The utility model relates to a pressure-limiting valve which is provided with a valve body, a filter plate, a valve rod, a spring, a clamping sleeve, a guide sleeve and a sealing gasket. The valve body is provided with a threaded port, an annular clamping slot is arranged in the valve body, the filter plate is installed in the annular clamping slot, the valve rod and the sealing gasket are assembled into a whole in an attaching mode through clamping, the valve rod penetrates through an inner hole of the valve body to penetrate through the guide sleeve and the spring sequentially, and the tail end of the valve rod is fastened and pressed through the clamping sleeve. Under the effect of the spring, the valve rod is pressed on the sealing gasket so as to press the annular sealing surface of the valve body.
Description
Technical field
The utility model relates to a kind of pressure-limit valve.
Background technique
Pressure-limit valve in the past adopts the mode of diaphragm seal, and concrete structure is that diaphragm coats sealing surface, and sealing contact surface is very big; Use is in the vacuum excrement collector system time, because being rich in the strong steam of corrosivity, salinity, particle etc. in the gaseous environment, and original pressure-limit valve structure build up of dirt easily between sealing surface and diaphragm, and make the metalwork corrosion, cause sealing surface to destroy seal failure.Therefore, be necessary this is improved.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, a kind of novel pressure-limit valve is provided, and the purpose of this utility model realizes by following technical solution: pressure-limit valve of the present utility model is provided with valve body, filter plate, valve rod, spring, cutting ferrule, guide sleeve, sealing gasket; Described valve body is provided with threaded port, is provided with annular screens groove in the valve body, the filter plate of packing in the annular screens groove; Valve rod is fitted by screens and sealing gasket and is assembled into one, and valve rod passes guide sleeve and spring after passing the endoporus of valve body successively, and the valve rod tail end is withheld with cutting ferrule, is pressed on the sealing gasket and compresses the annular sealing surface of valve body at the spring action lower valve rod.
Compared with the prior art, pressure-limit valve structure of the present utility model is changed near linear sealing by the face sealing, sealing contact surface is long-pending to be reduced to original approximately 1/5, has reduced possibility that dirt adheres to, and it is possible to reduce corrosion, and valve rod, cutting ferrule, guide sleeve are nylon injection-molding spare, corrosion-resistant on the material, do not soak into steam, be difficult for build up of dirt, so long service life, stability is better.New pressure-limit valve structure is screens and withholds assembling, and the assembling mode is simply quick, productivity and finished product height, and the moulding cost is low, is conducive to reduce production costs.
Description of drawings
Fig. 1 is structure cross-sectional schematic of the present utility model.
Fig. 2 shows the perspective view of Fig. 1 correspondence.
Fig. 3 is valve body structure schematic representation of the present utility model.
Fig. 4 is stem structure schematic representation of the present utility model.
Represent among the figure:
The 1--valve body, the 2--filter plate, the 3--valve rod, the 4--spring, the 5--cutting ferrule, the 6--guide sleeve,
The 7--sealing gasket, the 8--threaded port, the 9--annular sealing surface, 10--annular screens groove,
The assembling screens of 11--and cutting ferrule, the assembling screens of 12--and sealing gasket.
Embodiment
Specific embodiment below in conjunction with accompanying drawing further specifies the utility model. and (but not being to restriction of the present utility model).
Shown in Fig. 1-2, the utility model is provided with valve body 1, filter plate 2, valve rod 3, spring 4, cutting ferrule 5, guide sleeve 6, sealing gasket 7; Described valve body 1 is provided with threaded port 8, so that external, valve body 1 is established interior annular screens groove 10, the filter plate 2 of packing in the annular screens groove 10, and filter plate 2 blocks valve body 1 inner space, avoids foreign material to fall into valve body; Valve rod 3 is fitted by screens and sealing gasket 7 and is assembled into one, valve rod 3 passes guide sleeve 6 and spring 4 after passing the endoporus of valve body 1 successively, valve rod 3 tail ends are withheld with cutting ferrule 5, are pressed on the sealing gasket 7 and compress the annular sealing surface 9 of valve body 1 at spring 4 effect lower valve rods 3.
Valve rod 3 of the present utility model, cutting ferrule 5, guide sleeve 6 are nylon injection-molding spare.
The action summary: generally, the sealing surface closure in valve rod 3 and sealing gasket 7 and the valve body 1, but when giving 3 one thrusts of valve rod, valve rod 3 can overcome the elasticity of spring 4 and slide along guide sleeve 6, makes unseal.
The function summary: this pressure-limit valve is used for the vacuum excrement collector system, and valve body 1 threaded end partly is connected with system vacuum, and filter plate 2 outsides are barometric pressure.Under the normal working, it is airtight that this valve keeps, to guarantee the intrasystem vacuum of defecate collection device; When abnormal conditions occurring in the defecate collection device system, valve rod 3 and sealing gasket 7 can be opened voluntarily, lay down system's malleation, avoid the defecate collection device phenomenon to occur regurgitating.
More than be specific embodiment of the present utility model, all similar changes of doing according to above-mentioned design ought to belong to scope of the present utility model.
Claims (2)
1. a pressure-limit valve is characterized in that, described pressure-limit valve is provided with valve body, filter plate, valve rod, spring, cutting ferrule, guide sleeve, sealing gasket; Described valve body is provided with threaded port, is provided with annular screens groove in the valve body, the filter plate of packing in the annular screens groove; Valve rod is fitted by screens and sealing gasket and is assembled into one, and valve rod passes guide sleeve and spring after passing the endoporus of valve body successively, and the valve rod tail end is withheld with cutting ferrule, is pressed on the sealing gasket and compresses the annular sealing surface of valve body at the spring action lower valve rod.
2. pressure-limit valve according to claim 1 is characterized in that, described valve rod, cutting ferrule, guide sleeve are nylon injection-molding spare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097296 CN203131135U (en) | 2013-03-04 | 2013-03-04 | Pressure-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097296 CN203131135U (en) | 2013-03-04 | 2013-03-04 | Pressure-limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203131135U true CN203131135U (en) | 2013-08-14 |
Family
ID=48939115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320097296 Expired - Fee Related CN203131135U (en) | 2013-03-04 | 2013-03-04 | Pressure-limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203131135U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015715A (en) * | 2016-07-25 | 2016-10-12 | 金华市宏昌电器有限公司 | Hydraulic control device |
| CN106481870A (en) * | 2016-11-28 | 2017-03-08 | 马鞍山市天睿实业有限公司 | A kind of extinguisher valve plastics push rod and preparation method thereof |
| CN108087600A (en) * | 2017-12-29 | 2018-05-29 | 上海震业机电有限公司 | A kind of anti-explosive valve of the efficient linear sealing structure of bidirectional protective |
| CN109602999A (en) * | 2018-12-04 | 2019-04-12 | 许克璞 | A kind of picc indwelling tube continues feed flow preventing clogging up device and its feed liquid method |
-
2013
- 2013-03-04 CN CN 201320097296 patent/CN203131135U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015715A (en) * | 2016-07-25 | 2016-10-12 | 金华市宏昌电器有限公司 | Hydraulic control device |
| CN106015715B (en) * | 2016-07-25 | 2018-07-17 | 金华市宏昌电器有限公司 | A kind of Waterpower control device |
| CN106481870A (en) * | 2016-11-28 | 2017-03-08 | 马鞍山市天睿实业有限公司 | A kind of extinguisher valve plastics push rod and preparation method thereof |
| CN108087600A (en) * | 2017-12-29 | 2018-05-29 | 上海震业机电有限公司 | A kind of anti-explosive valve of the efficient linear sealing structure of bidirectional protective |
| CN109602999A (en) * | 2018-12-04 | 2019-04-12 | 许克璞 | A kind of picc indwelling tube continues feed flow preventing clogging up device and its feed liquid method |
| CN109602999B (en) * | 2018-12-04 | 2021-04-27 | 许克璞 | Continuous liquid supply anti-blocking device for picc indwelling pipe and liquid supply method thereof |
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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: 20130814 Termination date: 20160304 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |