CN202914846U - Limiting mechanism of mechanically-controlled snorting valve - Google Patents
Limiting mechanism of mechanically-controlled snorting valve Download PDFInfo
- Publication number
- CN202914846U CN202914846U CN 201220603837 CN201220603837U CN202914846U CN 202914846 U CN202914846 U CN 202914846U CN 201220603837 CN201220603837 CN 201220603837 CN 201220603837 U CN201220603837 U CN 201220603837U CN 202914846 U CN202914846 U CN 202914846U
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- cavity
- valve
- flange
- end cap
- valve body
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- Expired - Lifetime
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model relates to a limiting mechanism of a mechanically-controlled snorting valve. The limiting mechanism comprises a valve body and a cavity which is formed in the valve body and used for mounting a valve element. An end cover is arranged at the upper end of the valve element. The end cover extends towards the outer side to form a flange. The lower end face of the flange abuts against the upper end face of the cavity. A sealing ring is arranged on the lower side of the flange and located on the inner wall of the cavity. The end cover extends towards the outer side to form the flange, and the lower end face of the flange abuts against on the upper end face of the cavity. When the snorting valve in the structure is assembled, the phenomenon that the snorting valve is excessively tightened can not occur, and the sealing ring which is arranged on the lower side of the flange and located on the inner wall of the cavity is prevented from being damaged. Consequently, the limiting mechanism improves sealing performance of the valve body and greatly improves the phenomena that the snorting valves are returned to repair due to the sealing problems.
Description
Technical field
The utility model relates to a kind of position-limit mechanism, is specially a kind of position-limit mechanism of mechanically controlled type vent valve.
Background technique
At present, the similar valve of market upper inlet, have shortcoming in its structure, in the process of assembling valve, end cap and valve pocket do not have effective position-limit mechanism, so that excessive phenomenon when it assembles, may occur tightening, then make Sealing compressed very large, although also can work the words of work times more than, sealability can be affected, and also may cause serious gas leak phenomenon; Next tightens the change with opening travel of reducing that excessive meeting caused the gas passage.Above-mentioned structural disadvantages can make valve unstable properties in the course of the work, and phenomenon easily leaks air.Frequent reprocesses, and brings a lot of inconvenience to the user.In view of the foregoing, need to improve existing equipment at present.
The model utility content
Shortcoming for above-mentioned prior art, the utility model provides a kind of position-limit mechanism of mechanically controlled type vent valve, existing mechanical type vent valve structure is carried out again design, namely be designed with by the spacing mechanism of end face at end cap and valve pocket, tighten excessive problem thereby solve it.
The utility model solves the problems of the technologies described above by the following technical solutions:
A kind of position-limit mechanism of mechanically controlled type vent valve, comprise valve body and be molded over the cavity that spool is installed on this valve body, described spool upper end is equipped with end cap, described end cap is extended with flange laterally, this flange lower end surface is resisted against on the upper-end surface of described cavity, is positioned at cavity inner wall at described flange downside and is provided with seal ring.
Further, be positioned at the end cap downside at described spool valve pocket is installed, the valve pocket upper end contacts with the lower end surface of described end cap, and valve pocket lower end periphery wall extends laterally, and the extension part lower end surface that extends to form is resisted against on the step surface of moulding in the cavity.
As preferably, be provided with rubber ring between described extension part and the step surface.
The utility model compared with prior art has following advantage: end cap of the present utility model is extended with flange laterally, this flange lower end surface is resisted against on the upper-end surface of described cavity, when the vent valve of this structure of assembling, excessive phenomenon can not appear tightening, the seal ring of avoiding being positioned at cavity inner wall at the flange downside suffers damage, and has improved the sealing of valve body; Simultaneously, adopt above-mentioned identical structure in the lower end of valve pocket, further improved the sealing of valve body.
Description of drawings
Fig. 1 is the cross-sectional schematic of the utility model optimal way.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, the position-limit mechanism of mechanically controlled type vent valve of the present utility model comprises valve body 13 and is molded over the cavity 14 that spool 7 is installed on this valve body, described spool upper end is equipped with end cap 9, described end cap is extended with flange 11 laterally, this flange lower end surface is resisted against on the upper-end surface of described cavity, is positioned at cavity inner wall at described flange downside and is provided with seal ring 16.When the vent valve of this structure of assembling, the flange that end cap extends has laterally played position-limiting action, can prevent from tightening excessive phenomenon, avoids damaging described seal ring, thereby has improved the sealability of valve body.
In the utility model, be positioned at end cap 9 downsides at described spool valve pocket 10 is installed, the valve pocket upper end contacts with the lower end surface of described end cap, valve pocket lower end periphery wall extends laterally, extension part 12 lower end surfaces that extend to form are resisted against on the step surface of moulding in the cavity, further, between described extension part 12 and step surface, also be provided with rubber ring 15.This structure is the same with the action principle of above-mentioned end cap, has played position-limiting action equally, prevents from further having improved the sealability of valve body because tightening the excessive rubber ring that damages.
Working procedure of the present utility model is such: the air-inlet cavity 6 of vent valve of the present utility model connects pressurized air, work air-inlet cavity 8 external interlocks.When depression bar 1 by cam when pressing down, last item 2 moves downward, when last item 2 and spool 7 connect when just touching, upper gas chamber 3, lower air chamber 4, exhaust cavity 5 all are cut off.Depression bar 1 continues to press down, when last item 2 continues to move downward, and upper gas chamber 3 and lower air chamber 4 conductings, lower air chamber 4 and exhaust cavity 5 not conductings, the pressurized gas that air-inlet cavity 6 places connect is discharged through upper gas chamber 3, lower air chamber 4 and from work air-inlet cavity 8.When depression bar 1 when being recovered by pressure condition, upper gas chamber 3 and lower air chamber 4 cut off, upper gas chamber 3 and exhaust cavity 5 conductings, the unnecessary gas in work air-inlet cavity 8 places is discharged from exhaust cavity 5 through upper gas chamber 3.
Vent valve of the present utility model is because end cap 9 and valve pocket 10 are respectively equipped with flange 11 and extension part 12; so that its position is limited respectively; thereby protected the Sealing that is arranged on its downside; improved the sealability of valve body, so that the depot repair problem that is occurred by sealing problem is much improved.Simultaneously, the sealing of end cap 9 with last item 2 can be improved, make its sealability more reliable.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the position-limit mechanism of a mechanically controlled type vent valve, comprise valve body and be molded over the cavity that spool is installed on this valve body, described spool upper end is equipped with end cap, it is characterized in that: described end cap is extended with flange laterally, this flange lower end surface is resisted against on the upper-end surface of described cavity, is positioned at cavity inner wall at described flange downside and is provided with seal ring.
2. the position-limit mechanism of a kind of mechanically controlled type vent valve according to claim 1, it is characterized in that: be positioned at the end cap downside at described spool valve pocket is installed, the valve pocket upper end contacts with the lower end surface of described end cap, valve pocket lower end periphery wall extends laterally, and the extension part lower end surface that extends to form is resisted against on the step surface of moulding in the cavity.
3. the position-limit mechanism of a kind of mechanically controlled type vent valve according to claim 2 is characterized in that: be provided with rubber ring between described extension part and the step surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603837 CN202914846U (en) | 2012-11-15 | 2012-11-15 | Limiting mechanism of mechanically-controlled snorting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603837 CN202914846U (en) | 2012-11-15 | 2012-11-15 | Limiting mechanism of mechanically-controlled snorting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914846U true CN202914846U (en) | 2013-05-01 |
Family
ID=48163163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603837 Expired - Lifetime CN202914846U (en) | 2012-11-15 | 2012-11-15 | Limiting mechanism of mechanically-controlled snorting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550560A (en) * | 2020-05-11 | 2020-08-18 | 重庆国飞通用航空设备制造有限公司 | Universal control valve |
-
2012
- 2012-11-15 CN CN 201220603837 patent/CN202914846U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550560A (en) * | 2020-05-11 | 2020-08-18 | 重庆国飞通用航空设备制造有限公司 | Universal control valve |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |