CN201844075U - Combined unloading valve - Google Patents
Combined unloading valve Download PDFInfo
- Publication number
- CN201844075U CN201844075U CN2010205649434U CN201020564943U CN201844075U CN 201844075 U CN201844075 U CN 201844075U CN 2010205649434 U CN2010205649434 U CN 2010205649434U CN 201020564943 U CN201020564943 U CN 201020564943U CN 201844075 U CN201844075 U CN 201844075U
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- CN
- China
- Prior art keywords
- filter screen
- filter
- valve
- valve body
- unloading valve
- 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 discloses a combined unloading valve, and relates to an unloading valve. The utility model provides a combined unloading valve which can prevent impurities from entering the inner side of the unloading valve, avoid air leakage, work reliably, and can greatly prolong the service life of the unloading valve. The combined unloading valve comprises an upper valve body, a lower valve body, a valve rod, a valve core and a sealed membrane. The combined unloading valve is characterized in that a pipeline filter is arranged on an air inlet of the valve body; the pipeline filter is provided with a shell, a filter screen, a filter core and a safety device; the shell is provided with an air inlet, an air outlet and a discharge opening; the filter core is arranged in the filter screen; the safety device is arranged in the shell; an elastic filter body is also arranged between the sealed membrane and the upper valve body; the upper surface of the elastic filter body is contacted with the bottom part of the upper valve body; and the lower surface of the elastic filter body is contacted with the upper surface of the sealed membrane.
Description
Technical field
The utility model relates to a kind of unloading valve, especially relates to the combination unloading valve that a kind of pressurized air that is mainly used in the motor vehicle braking system carries out Regulation Control.
Background technique
Existing be mainly used in the motor vehicle braking system the unloading valve conventional structure as shown in Figure 2.Wherein, the inner circle wall of the periphery wall of seal membrane 3 and pressure regulating cavity 2 forms sealing.Exist between the upper-end surface of seal membrane 3 and upper valve body 1 bottom end and can make diaphragm 3 produce the deformation space of distortion.The major defect that such unloading valve exists is: when between the inner circle wall of the periphery wall of seal membrane 3 and pressure regulating cavity 2 during poor sealing, will leak gas.The basic reason of gas leakage is because impurity enters between the sealed faying face, has destroyed sealing.And impurity can enter in the valve body, causes the destruction to other sealing positions, causes gas leakage, thereby unloading valve was lost efficacy, and brings potential safety hazard.
Summary of the invention
The purpose of this utility model is to provide a kind of impurity that prevents to enter unloading valve inside, avoids gas leakage, reliable operation, and can prolong the combination unloading valve of unloading valve operating life greatly.
The utility model comprises upper valve body, following valve body, valve rod, spool and seal membrane; Its characteristics are to be provided with in-line filter on the suction port of valve body, and in-line filter is provided with housing, filter screen, filter core and safety installations, and housing is provided with suction port, relief opening and relief port, and filter core is located in the filter screen, and safety installations is located in the housing; Also be provided with the elasticity filter between seal membrane and upper valve body, the upper surface of elasticity filter and upper valve body bottom touch, and the lower surface of elasticity filter and the upper surface of seal membrane touch.
Described safety installations can be provided with spring, discharge orifice and discharge orifice door, and spring one end supports filter screen, the spring the other end discharge orifice door that bears down on one, and the shutoff of discharge orifice door is on discharge orifice, and discharge orifice is located at the housing bottom.
Described filter screen preferably is provided with upper filter screen and lower filter screen, upper filter screen is the tubular filter screen, and lower filter screen is tabular filter screen, and the upper filter screen opening end is provided with the flange that turns up, the lower filter screen edge is provided with the invagination groove, and the flange that turns up of upper filter screen opening end is embedded in the invagination groove at lower filter screen edge.
Compare with existing conventional unloading valve, the beneficial effects of the utility model are:
Owing to be provided with the in-line filter of built-in safety valve, therefore the gas that enters unloading valve can be filtered earlier, can be first the most of impurity of elimination, make the gas that enters unloading valve clean with respect to the gas of braking system gas circuit, reduce infringement to the Sealing in the unloading valve.Owing between seal membrane and upper valve body, be provided with the elasticity filter, the elasticity filter is positioned at the deformation space of seal membrane, because of the elasticity filter easily produces elastic strain, therefore both can fully ensure the deformation space of diaphragm, can take precautions against again between the periphery wall and pressure regulating cavity inwall that impurity enters seal membrane, thereby be in good sealing state between the periphery wall of assurance seal membrane and the pressure regulating cavity inwall, can significantly improve the functional reliability of unloading valve.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the structural representation of existing conventional unloading valve.
Embodiment
Referring to Fig. 1, the utility model embodiment comprises upper valve body 11, following valve body 12, valve rod 13, spool 14 and seal membrane 15.On the suction port 16 of valve body, be provided with in-line filter.In-line filter is provided with housing 21, filter screen (comprising upper filter screen 22 and lower filter screen 23), filter core 24 (but multilayer) and safety installations, housing 21 is provided with suction port 211 and relief opening 212, filter core 24 is located in the filter screen, upper filter screen 22 is the tubular filter screen, lower filter screen 23 is tabular filter screen, the opening end of upper filter screen 22 is provided with the flange 221 that turns up, and lower filter screen 23 edges are provided with the invagination groove, and the flange 221 that turns up of upper filter screen 22 opening ends is embedded in the invagination groove at lower filter screen 23 edges.Safety installations is provided with spring 26, discharge orifice 27 and discharge orifice door 28, and the top filter screen is propped up in spring 26 upper ends, the spring 26 lower ends discharge orifice door 28 that bears down on one, and 28 shutoff of discharge orifice door are on discharge orifice 27, and discharge orifice 27 is located at the housing bottom.(being the deformation space of seal membrane 15) also is provided with elasticity filter 30 between seal membrane 15 and upper valve body 11, the shape of elasticity filter 30 is ring, the upper surface of elasticity filter 30 and upper valve body 11 bottoms touch, and the upper surface of the lower surface of elasticity filter 30 and seal membrane 15 touches.
Claims (3)
1. the combination unloading valve comprises upper valve body, following valve body, valve rod, spool and seal membrane; It is characterized in that being provided with in-line filter on the suction port of valve body, in-line filter is provided with housing, filter screen, filter core and safety installations, and housing is provided with suction port, relief opening and relief port, and filter core is located in the filter screen, and safety installations is located in the housing; Also be provided with the elasticity filter between seal membrane and upper valve body, the upper surface of elasticity filter and upper valve body bottom touch, and the lower surface of elasticity filter and the upper surface of seal membrane touch.
2. combination unloading valve as claimed in claim 1, it is characterized in that described safety installations is provided with spring, discharge orifice and discharge orifice door, spring one end supports filter screen, the spring the other end discharge orifice door that bears down on one, the shutoff of discharge orifice door is on discharge orifice, and discharge orifice is located at the housing bottom.
3. combination unloading valve as claimed in claim 1, it is characterized in that described filter screen is provided with upper filter screen and lower filter screen, upper filter screen is the tubular filter screen, lower filter screen is tabular filter screen, the upper filter screen opening end is provided with the flange that turns up, the lower filter screen edge is provided with the invagination groove, and the flange that turns up of upper filter screen opening end is embedded in the invagination groove at lower filter screen edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205649434U CN201844075U (en) | 2010-10-15 | 2010-10-15 | Combined unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205649434U CN201844075U (en) | 2010-10-15 | 2010-10-15 | Combined unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844075U true CN201844075U (en) | 2011-05-25 |
Family
ID=44038967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205649434U Expired - Fee Related CN201844075U (en) | 2010-10-15 | 2010-10-15 | Combined unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201844075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299890A (en) * | 2017-07-06 | 2017-10-27 | 浙江超超安全阀制造有限公司 | A kind of petrol and diesel oil power combination valve |
| CN107387375A (en) * | 2017-08-14 | 2017-11-24 | 厦门金利业科技有限公司 | Air pressure manager |
-
2010
- 2010-10-15 CN CN2010205649434U patent/CN201844075U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299890A (en) * | 2017-07-06 | 2017-10-27 | 浙江超超安全阀制造有限公司 | A kind of petrol and diesel oil power combination valve |
| CN107387375A (en) * | 2017-08-14 | 2017-11-24 | 厦门金利业科技有限公司 | Air pressure manager |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20131015 |