CN203395298U - Air check valve - Google Patents
Air check valve Download PDFInfo
- Publication number
- CN203395298U CN203395298U CN201320509491.3U CN201320509491U CN203395298U CN 203395298 U CN203395298 U CN 203395298U CN 201320509491 U CN201320509491 U CN 201320509491U CN 203395298 U CN203395298 U CN 203395298U
- Authority
- CN
- China
- Prior art keywords
- air
- spool
- check valve
- valve
- utility
- 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
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- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The utility model relates an air check valve which comprises a valve body and a valve core, wherein the valve body is internally provided with an air inlet channel and an air outlet channel. The air check valve is characterized in that the valve core is arranged at the communication part between the air inlet channel and the air outlet channel; the air outlet channel is internally provided with a cone-shaped spring capable of enabling the valve core to float; the valve core is a polyurethane round ball. A filter screen is installed at an outlet of the air outlet channel. A circlip for hole is installed at the bottom of the air outlet channel. The air check valve provided by the utility model has the advantages that the wear resistance of the valve core and the cleanability of suction air are improved, and the service life of the air check valve is prolonged.
Description
Technical field
The utility model relates to hydraulic breaking hammer technical field, relates in particular to a kind of air back valve.
Background technique
Quartering hammer is a kind of conventional industrial disintegrating apparatus.Above it, be provided with air back valve, its effect is that main control system and the external world carry out gas exchange.The piston of quartering hammer impacts drill steel, between piston and drill steel, form constantly the cavity of air-breathing and exhaust, when piston promotes, ambient atmos need to enter this cavity by safety check, and when piston impacts downwards, the gas of this cavity is subject to punching press and need to discharges along drill steel.Because quartering hammer frequency of okperation is high, spool in air back valve is constantly opened closure, therefore require spool to there is good wear resistance, the air back valve of prior art has adopted aluminum spool, not only manufacturing process is complicated for it, and wear resistance is also poor, after quartering hammer works long hours, the distortion that is gradually worn of aluminum spool; In addition, because the working environment dust of quartering hammer is large, the wearing and tearing because entering of big dust particle strengthened quartering hammer inside, have also reduced its working stability thus.
Model utility content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of spool wear resistance strong, the air back valve that air flue is more unobstructed.
The technological scheme that the utility model solves the problems of the technologies described above is as follows: a kind of air back valve, comprise valve body and spool, in described valve body, be provided with gas-entered passageway and outlet passageway, it is characterized in that, described gas-entered passageway and the outlet passageway place of being connected are provided with described spool, in described outlet passageway, be provided with the volute spring that can make described spool unsteady, described spool is polyurethane ball.
The beneficial effects of the utility model are, that spool adopts is wear-resisting, oil resistant and the good polyurethane material manufacture of ageing resistance, have extended the working life of valve body; Adopt volute spring to make described spool supporting & stablizing, open and close flexibly.
On the basis of technique scheme, this model utility can also be done following improvement.
Further, the outlet port of described outlet passageway is provided with filter screen.
Adopt the beneficial effect of above-mentioned further scheme to be, filter screen can effectively stop oarse-grained impurity to enter in quartering hammer, has reduced the wearing and tearing to equipment, has guaranteed the unimpeded of air flue.
Further, the bottom of described outlet passageway is provided with circlip for hole.
Adopt the beneficial effect of above-mentioned further scheme to be, adopt the accessories such as circlip fixing spring, filter screen, be convenient to these accessory maintenances and change.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model;
In Fig. 1,1, valve body; 2, spool; 3, volute spring; 4, filter screen; 5, circlip for hole; 6, gas-entered passageway; 7, outlet passageway.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining this model utility, is not intended to limit the scope of this model utility.
As shown in Figure 1, a kind of air back valve, comprise valve body 1 and spool 2, in described valve body 1, be provided with gas-entered passageway 6 and outlet passageway 7, described gas-entered passageway 6 and outlet passageway 7 places of being connected are provided with described spool 2, in described outlet passageway 7, be provided with the volute spring 3 that can make described spool 2 unsteady, described spool 2 is polyurethane ball.
The outlet port of described outlet passageway 7 is provided with filter screen 4.
The bottom of described outlet passageway 7 is provided with circlip for hole 5.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. an air back valve, comprise valve body and spool, in described valve body, be provided with gas-entered passageway and outlet passageway, it is characterized in that, described gas-entered passageway and the outlet passageway place of being connected are provided with described spool, in described outlet passageway, be provided with the volute spring that can make described spool unsteady, described spool is polyurethane ball.
2. air back valve according to claim 1, is characterized in that, the outlet port of described outlet passageway is provided with filter screen.
3. air back valve according to claim 1 and 2, is characterized in that, the bottom of described outlet passageway is provided with circlip for hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320509491.3U CN203395298U (en) | 2013-08-20 | 2013-08-20 | Air check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320509491.3U CN203395298U (en) | 2013-08-20 | 2013-08-20 | Air check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395298U true CN203395298U (en) | 2014-01-15 |
Family
ID=49906831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320509491.3U Expired - Lifetime CN203395298U (en) | 2013-08-20 | 2013-08-20 | Air check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395298U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162248A (en) * | 2017-07-16 | 2017-09-15 | 上海谷奇核孔膜材料科技有限公司 | Built-in cup filter cartridge construction |
| CN107355551A (en) * | 2017-08-29 | 2017-11-17 | 四川固特阀门制造有限公司 | Inverse formula opens and closes cut-out cock |
| CN107869606A (en) * | 2017-12-05 | 2018-04-03 | 博纳斯威阀门股份有限公司 | A kind of micro-exhaust valve for carrying filtering function |
| CN108518508A (en) * | 2017-11-06 | 2018-09-11 | 肇庆市大旺大庆炉具制品企业有限公司 | A kind of gas check valve and gas-fired equipment |
| CN112223365A (en) * | 2020-09-27 | 2021-01-15 | 重庆三创印刷有限公司 | Cutting device of printing machine |
-
2013
- 2013-08-20 CN CN201320509491.3U patent/CN203395298U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162248A (en) * | 2017-07-16 | 2017-09-15 | 上海谷奇核孔膜材料科技有限公司 | Built-in cup filter cartridge construction |
| CN107355551A (en) * | 2017-08-29 | 2017-11-17 | 四川固特阀门制造有限公司 | Inverse formula opens and closes cut-out cock |
| CN108518508A (en) * | 2017-11-06 | 2018-09-11 | 肇庆市大旺大庆炉具制品企业有限公司 | A kind of gas check valve and gas-fired equipment |
| CN107869606A (en) * | 2017-12-05 | 2018-04-03 | 博纳斯威阀门股份有限公司 | A kind of micro-exhaust valve for carrying filtering function |
| CN112223365A (en) * | 2020-09-27 | 2021-01-15 | 重庆三创印刷有限公司 | Cutting device of printing machine |
| CN112223365B (en) * | 2020-09-27 | 2022-03-29 | 重庆三创印刷有限公司 | Cutting device of printing machine |
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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: 20140115 |
|
| CX01 | Expiry of patent term |