CN102889198A - Air compressor air inlet valve for railway locomotive - Google Patents
Air compressor air inlet valve for railway locomotive Download PDFInfo
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- CN102889198A CN102889198A CN2012104400748A CN201210440074A CN102889198A CN 102889198 A CN102889198 A CN 102889198A CN 2012104400748 A CN2012104400748 A CN 2012104400748A CN 201210440074 A CN201210440074 A CN 201210440074A CN 102889198 A CN102889198 A CN 102889198A
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- valve
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- air compressor
- air inlet
- piston
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Abstract
The invention discloses an air compressor air inlet valve for a railway locomotive. The air compressor air inlet valve comprises a valve body and a valve seat, wherein an air inlet is formed on the valve body, and a valve plate body is arranged on the valve body; the valve seat is arranged above the valve body; a piston is arranged in a cavity of the valve seat; a first spring is blocked between the upper top part of the piston and the valve seat; the valve plate body is connected with the piston through a valve rod; and a second spring is blocked between the valve plate body and the valve rod. The air compressor air inlet valve for the railway locomotive is mainly applied to the domestic rail transportation industry, and with the adoption of the air compressor air inlet valve, liquid water is effectively prevented from appearing in an air compressor, the fault rate of the air inlet valve is reduced, the problem of lubricating oil spray leakage caused by the reason that the valve plate body of the air inlet valve is not closed in time is solved at the same time, and a machine is protected against burning loss due to the lack of lubricating oil.
Description
Technical field
The present invention relates to the air inlet technology of air compressor, specifically a kind of inlet valve of air compressor for railway locomotive.
Background technique
For rail traffic vehicles, especially railway locomotive, the locomotive place of arrival, each Climate is different, this may arrive temperature utmost point low country or the high area of humidity of the air so that the air compressor working environment that uses on it can produce very large variation such as railway locomotive.For the extremely low weather conditions of temperature, in the time period of shutting down after air compressor is made wind to train, air compressor may freeze; For the weather conditions of high humidity in summer, the low temperature that compressor shutdown causes may make airborne moisture condense in compressor and cause lubricating oil emulsion, thereby the accident that may cause compressor to be burnt occurs.Solution for the problems referred to above; be under above-mentioned extreme weather conditions, in the situation that the machine that do not have a power failure, keep the compressor small-power and turn round to avoid shutting down the problems such as freezing of may causing; at this moment, suction valve suction port place valve plate body is instant, effectively closure is necessary condition.
The applicant's formerly patent ZL201020115493.0 discloses a kind of inlet valve of air compressor for railway locomotive, this suction valve has satisfied in the situation that the machine that do not have a power failure, valve plate body instant, effectively closed technical need in needed suction valve suction port place when keeping the running of compressor small-power, thus above-mentioned technical problem solved.Yet; this suction valve is when going to outage state by working state; on promote back draught that valve plate body closure plays a major role installed piston cylinder block impact and change the flow direction; cause back draught to impact from the side the suction valve plate body; the situation that then may cause thus the valve plate body to tilt because unbalance stress produces in reseting procedure occurs; when the angle of inclination acquires a certain degree; can cause frictional force between valve plate body and the valve seat excessive and can not be in time closed; can cause thus the lubricant oil spray to let out, machine then may cause scaling loss because lacking lubricant oil.
Summary of the invention
Purpose of the present invention just provides a kind of inlet valve of air compressor for railway locomotive; but both solution effectively closed technical problem of the valve plate body under the outage state never; the valve plate body is effectively closed in the time of can guaranteeing to shut down again, thereby guarantees normal, the safe operation of air compressor on the railway locomotive.
The object of the present invention is achieved like this:
A kind of inlet valve of air compressor for railway locomotive comprises valve body and valve seat, has suction port and the valve plate body is installed at valve body, and described valve seat is arranged at the valve body top, in the cavity of valve seat piston is installed, and is installed with the first spring between the upper top of piston and the valve seat; The valve plate body is connected valve rod with piston and connects, and is installed with the second spring between valve plate body and valve rod.
The present invention adopts this structure, and when outage state, the valve plate body keeps closed condition under the effect of the second spring.It is descending that the suction pressure that is produced by suction port when starting state makes the valve plate body overcome the active force of the second spring, opens suction port, makes the air compressor normal operation.When needs were closed air compressor, back draught is frontal impact valve plate body under the valve plate body, makes its quick closedown, had avoided the hidden danger that back draught side valve plate body causes in the prior art.
Under technique scheme, the present invention can realize like this:
Wall body at valve seat has air intake.Adopt this structure; can be by passing into pressurized air in the air intake; thereby control piston overcomes the elastic force of the first spring and is up; and then the up suction port of closing of drive valve plate body; not shut down be the task of the air inlet closure under the small-power operating condition thereby finish; thus, then can avoid shutting down under the extreme weather generation of the security incident that may cause.
Among the present invention, described valve rod preferably adopts with described piston and is threaded.
Inlet valve of air compressor for railway locomotive provided by the invention is mainly used in domestic track traffic industry, effectively prevented the appearance of liquid water in the air compressor, reduced the rate of fault of suction valve, solve simultaneously the closed untimely lubricant oil spray that causes of suction valve valve plate body and let out problem, avoided machine because lacking lubricant oil generation scaling loss.
Description of drawings
Fig. 1 is structural representation of the present invention under the outage state.
Fig. 2 is the present invention's view when working.
Fig. 3 is that the present invention does not shut down, the view when small-power turns round.
Among the figure: 1, valve seat, 2, valve body, 3, suction port, 4, the valve plate body, the 5, second spring, 6, valve rod, 7, cylinder, 8, piston, the 9, first spring, 10, limiting stopper.
Embodiment
As shown in Figure 1, valve seat 1 two-part that the present invention includes valve body 2 and be arranged at valve body 2 tops offer suction port 3 on the valve body 2.Be provided with valve plate body 4 in the valve body 2, valve plate body 4 has cavity, and a step of limiting, and cross-under has valve rod 6 in the described cavity, and valve rod 6 lower ends are shaped with limiting stopper 10, is installed with the second spring 5, the second springs 5 preferred column springs that adopt between valve plate body 4 and valve rod 6.Valve rod 6 extend upwardly in the valve seat 1 and with the cavity of valve seat 1 in the piston 8 installed be spirally connected, be installed with the first spring 9 between the upper top of piston 8 and the valve seat 1, the first spring 9 preferred volute springs that adopt, wall body at valve seat 1 has air intake (not shown), and the pressurized air up for pushing piston enters.
When the present invention is in outage state; as shown in Figure 1; the first spring 9 makes it descending to the piston applied thrust, peaks at going to the bottom of valve seat 1 until piston nose is propped up; at this moment; the second spring 5 is normal state, and valve plate body 4 is in the situation that without the outside power that applies, the mutual balance of elastic force of himself gravity and the second spring 5; make valve plate body 4 close gas-entered passageway, this moment is without gas flow.
When starting air compressor, as shown in Figure 2, the air-breathing generation vacuum of head, pressurized gas is entered by suction port 3, promotion valve plate body 4 overcomes the elastic force of the second spring 5 and moves downward, until blocked by valve rod 6 front end limiting stoppers 10, this moment, air-flow passed through the path between valve plate body 4 and the valve body 2, entered compressor head.
Shown in Figure 3, when the needs air compressor changes the small-power operating condition over to by starting state, open at the air intake (not shown) that the wall body of valve seat 1 is offered, can be used for the up pressurized air of pushing piston enters in the cylinder 7, it is up that pushing piston 8 overcomes the elastic force of the first spring 9, and it is up to drive the valve plate body by valve rod 6, closes gas-entered passageway, and air compressor enters inner self-loopa state.Thus, in the situation that the machine that do not have a power failure, suction port place valve plate body is instant, effectively closed, thereby the oil gas cylinder pressure of compressor is maintained, and then has avoided shutting down the problem such as freezing of may causing.
When air compressor goes to outage state by small-power operating condition shown in Figure 3, be in barotropic state in the head, back draught frontal impact valve plate body 4 makes its quick closedown.The air intake (not shown) of offering at the wall body of valve seat 1 is simultaneously closed, and piston 8 resets under the effect of the first spring 9, and suction valve returns to outage state shown in Figure 1.
When air compressor went to outage state under by normal starting state shown in Figure 2, head compressed air frontal impact valve plate body 4 made its quick closedown gas-entered passageway, and suction valve returns to outage state shown in Figure 1.
Claims (3)
1. an inlet valve of air compressor for railway locomotive comprises valve body and valve seat, has suction port and the valve plate body is installed at valve body, it is characterized in that, described valve seat is arranged at the valve body top, in the cavity of valve seat piston is installed, and is installed with the first spring between the upper top of piston and the valve seat; The valve plate body is connected valve rod with piston and connects, and is installed with the second spring between valve plate body and valve rod.
2. inlet valve of air compressor for railway locomotive according to claim 1 is characterized in that, has air intake at the wall body of valve seat.
3. inlet valve of air compressor for railway locomotive according to claim 1 is characterized in that, described valve rod is connected with described piston thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440074.8A CN102889198B (en) | 2012-11-07 | 2012-11-07 | Inlet valve of air compressor for railway locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440074.8A CN102889198B (en) | 2012-11-07 | 2012-11-07 | Inlet valve of air compressor for railway locomotive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102889198A true CN102889198A (en) | 2013-01-23 |
| CN102889198B CN102889198B (en) | 2016-01-20 |
Family
ID=47532830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210440074.8A Expired - Fee Related CN102889198B (en) | 2012-11-07 | 2012-11-07 | Inlet valve of air compressor for railway locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102889198B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120258A (en) * | 2017-05-27 | 2017-09-01 | 奉化意格特机械制造有限公司 | A kind of inversion type air compressor gas valve |
| CN109281820A (en) * | 2017-07-21 | 2019-01-29 | 浙江盾安轨道交通设备有限公司 | The intaking valve structure of air compressor machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685489A (en) * | 1984-04-13 | 1987-08-11 | Copeland Corporation | Valve assembly and compressor modulation apparatus |
| US4826134A (en) * | 1987-09-14 | 1989-05-02 | Chapman Walter R | Intake valve for air compressors and the like |
| RU2177576C2 (en) * | 2000-03-21 | 2001-12-27 | Новиков Михаил Иванович | Check valve |
| CN201013559Y (en) * | 2007-03-19 | 2008-01-30 | 上海斯可络压缩机有限公司 | Air-intake lifting valve |
| CN101737304A (en) * | 2010-02-11 | 2010-06-16 | 石家庄嘉祥精密机械有限公司 | Inlet valve of air compressor for railway locomotive |
| CN202326110U (en) * | 2011-11-10 | 2012-07-11 | 何东 | Combined admission valve of air compressor |
-
2012
- 2012-11-07 CN CN201210440074.8A patent/CN102889198B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685489A (en) * | 1984-04-13 | 1987-08-11 | Copeland Corporation | Valve assembly and compressor modulation apparatus |
| US4826134A (en) * | 1987-09-14 | 1989-05-02 | Chapman Walter R | Intake valve for air compressors and the like |
| RU2177576C2 (en) * | 2000-03-21 | 2001-12-27 | Новиков Михаил Иванович | Check valve |
| CN201013559Y (en) * | 2007-03-19 | 2008-01-30 | 上海斯可络压缩机有限公司 | Air-intake lifting valve |
| CN101737304A (en) * | 2010-02-11 | 2010-06-16 | 石家庄嘉祥精密机械有限公司 | Inlet valve of air compressor for railway locomotive |
| CN202326110U (en) * | 2011-11-10 | 2012-07-11 | 何东 | Combined admission valve of air compressor |
Non-Patent Citations (1)
| Title |
|---|
| 罗灯明等: "《汽车构造（下册）——底盘构造》", 31 January 2011, 北京大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120258A (en) * | 2017-05-27 | 2017-09-01 | 奉化意格特机械制造有限公司 | A kind of inversion type air compressor gas valve |
| CN107120258B (en) * | 2017-05-27 | 2019-09-03 | 奉化意格特机械制造有限公司 | A kind of inversion type air compressor gas valve |
| CN109281820A (en) * | 2017-07-21 | 2019-01-29 | 浙江盾安轨道交通设备有限公司 | The intaking valve structure of air compressor machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102889198B (en) | 2016-01-20 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20181107 |