CN203571150U - Air control water draining valve for locomotive air source system filter - Google Patents
Air control water draining valve for locomotive air source system filter Download PDFInfo
- Publication number
- CN203571150U CN203571150U CN201320579339.2U CN201320579339U CN203571150U CN 203571150 U CN203571150 U CN 203571150U CN 201320579339 U CN201320579339 U CN 201320579339U CN 203571150 U CN203571150 U CN 203571150U
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- China
- Prior art keywords
- piston
- draining valve
- water draining
- valve body
- air
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- Expired - Fee Related
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Abstract
The utility model discloses an air control water draining valve for a locomotive air source system filter. The air control water draining valve comprises a shell body. A filtering opening, a sewage storage cavity, a sewage discharging channel, a piston cavity and a heating rod are arranged on the shell body. An air containing cavity capable of air inflation and discharging is formed between a piston and the right end of the piston cavity. The piston is in a dumbbell shape and is divided into a left section piston part, a right section piston part and a middle section pressure bearing part which is provided with a left side stress face and a right side stress face. The area of the left side stress face is smaller than that of the right side stress face. According to the air control water draining valve, the phenomenon of long air exhausting is completely avoided when an electromagnetism water draining valve is used, no elastic elements exist, only air pressure effect is used for pushing a valve element (namely the piston) to move, accordingly the phenomenon of clamping stagnation caused by the fact that an elastic element of an existing air control automatic water draining valve loses efficacy is avoided, the adaptive environment temperature range of the water draining valve is expanded through the design of the heating rod, in addition, the air control water draining valve is simple in structure and low in cost, and using and maintaining cost is lowered.
Description
Technical field
The utility model relates to rail transit locomotive automatic drain valve, specifically locomotive air source system filter Pneumatic draining valve.
Background technique
Air supply system on rail transit locomotive generally all disposes compressed-air filter, on the interface of filter, disposes blowdown valve.Existing filter blowdown valve mostly is solenoid valve, but in actual applications, solenoid valve is usually subject to the restriction of electric parameter, environment and self mechanism, thereby rate of breakdown is higher.For solving the defect of solenoid valve application, some locomotive is used Manual draining valve instead at present, although Manual draining valve has been avoided some drawbacks of using solenoid valve to bring, but Manual draining valve can only operate when stopping, and cannot use when driving, this has not only increased workload, is also virtually increasing locomotive operation maintenance cost simultaneously.Due to solenoid valve and Manual draining valve many restrictions in actual applications, patent CN102734475B discloses a kind of locomotive automatic drain valve, pressurized air when it unloads using air compressor in pipeline drives as controlling wind regime, and carry out drainage dirt, and output wind when unloading from air compressor due to control wind regime, can not increase the added burden of air compressor, in running, reservoir also can not leak a large amount of internal compression air because of draining action.
Although the automatic drain valve that patent CN102734475B provides has been eliminated some defects of solenoid valve and Manual draining valve, but also there is a very important problem simultaneously, be exactly it realizes piston assembly to-and-fro motion by air pressure control, dependence elastic element, if elastic element inefficacy can cause the faults such as the catching phenomenon of drain valve.
Model utility content
The purpose of this utility model is to provide a kind of locomotive air source system filter Pneumatic draining valve, to solve existing Auto-drainage, occurs the problem of catching phenomenon because elastic element lost efficacy.
The purpose of this utility model is to realize by following technological scheme: a kind of locomotive air source system filter Pneumatic draining valve, comprise a housing, on described housing, be provided with filter interface, store up dirty chamber, drain outlet, piston cavity and heating stick, described filter interface, the dirty chamber of described storage and described drain outlet are all opened on described piston cavity; In described piston cavity, piston is installed, between described piston and the right-hand member of described piston cavity, form one can inflation/deflation gas cavity volume;
Described piston is dumbbell shape, is divided into left section of piston portion, right section of piston portion and stage casing pressure-bearing portion: described stage casing pressure-bearing portion is provided with left side stress surface and right side stress surface, and the area of described left side stress surface is less than the area of described right side stress surface;
When described piston is positioned at the left side of described piston cavity, described filter interface is communicated with the dirty chamber of described storage by described piston cavity, and when described piston is positioned at the right side of described piston cavity, the dirty chamber of described storage is communicated with described drain outlet by described piston cavity.
Described housing comprises upper valve body and the lower valve body of sealing docking; The dirty chamber of described filter interface and described storage is located on described upper valve body, and described drain outlet and described piston cavity are located on described lower valve body.
The diameter of described left section of piston portion is less than the diameter of described right section of piston portion.
Upper valve body and the lower valve body of described sealing docking are to be connected by screw, and with O RunddichtringO, seal between described upper valve body and described lower valve body.
The right-hand member of described piston cavity is to seal by a closing cap.
On left section of piston portion of described piston and right section of piston portion, be provided with this special seal ring.
The utlity model has following beneficial effect: 1. inelastic component in structural design of the present utility model, the only simple gas pressure that relies on, the pressure reduction that difference by lifting surface area produces promotes spool (being piston) action, thereby has eliminated existing gas control automatic drain valve due to the elastic element catching phenomenon causing that lost efficacy; 2. the utility model in use, guaranteed extraneous with pressurized air all the time in state of isolation, thoroughly stopped the generation of long air draft phenomenon; 3. the utility model is designed with heating stick, when drain valve is worked under low-temperature condition, heating stick can guarantee that the liquid water of collecting in drain valve there will not be icing phenomenon, thereby has ensured the service behaviour of drain valve, has also expanded the suitable environment temperature range of drain valve simultaneously; 4. the utility model is simple in structure, with low cost, has reduced operation and maintenance cost.
Accompanying drawing explanation
Fig. 1 is the utility model structure and collects dirty process schematic diagram.
Fig. 2 is the utility model blowdown process schematic diagram.
Fig. 3 is piston structure schematic diagram.
In figure: 1, upper valve body, 2, lower valve body, 3, filter interface, 4, store up dirty chamber, 5, piston, 6, drain outlet, 7, closing cap, 8, heating stick, 9, O RunddichtringO, 10, this special seal ring, 11, gas cavity volume, 12, piston cavity.
Embodiment
Below by embodiment, the utility model is described further.
As shown in Figure 1 and Figure 2, agent structure of the present utility model is to consist of the upper valve body 1 of fixing by fastening screw trip bolt and be docking together and lower valve body 2, and with O RunddichtringO 9, seals between upper valve body 1 and lower valve body 2; On upper valve body 1, be provided with filter interface 3 and the dirty chamber 4 of storage, on lower valve body 2, be provided with drain outlet 6 and piston cavity 12, filter interface 3, store up dirty chamber 4 and drain outlet 6 is all opened on piston cavity 12; The right-hand member of piston cavity 12 seals by a closing cap 7 being fixed on lower valve body 2, in piston cavity 12, be provided with shown in a dumbbell shape piston 5(Fig. 3), between piston 5 and closing cap 7, form gas cavity volume 11, and to have external gas source (not shown) be that gas cavity volume 11 is inflated.
When the left side of piston 5 in piston cavity 12, filter interface 3 is communicated with the dirty chamber 4 of storage by piston cavity 12, and drain outlet 6 is closed (as shown in Figure 1); When piston 5 is during in piston cavity 12 right side, store up dirty chamber 4 and be communicated with (as shown in Figure 2) by piston cavity 12 with drain outlet 6, filter interface 3 is closed.
Above filter interface 3 connects filter, stores up the liquid water that dirty chamber 4 leaches for stored filter device, and drain outlet 6 is for getting rid of the liquid water that stores up dirty chamber 4.
As shown in Figure 3, in the utility model, piston 5 can be divided into left section of piston portion, right section of piston portion and stage casing pressure-bearing portion: the diameter of left section of piston portion is less than the diameter of right section of piston portion, on left section of piston portion and right section of piston portion, be respectively arranged with this special seal ring 10 simultaneously, stage casing pressure-bearing portion be respectively equipped with the left side stress surface A corresponding with left section of piston portion, with the right section of right side stress surface B that piston portion is corresponding, and the area of left side stress surface A is less than the area of right side stress surface B.
In addition, drain valve of the present utility model is designed with heating stick 8, and when drain valve is worked under low-temperature condition, heating stick 8 can guarantee that the liquid water in drain valve there will not be icing phenomenon.
Working procedure of the present utility model is:
Collect dirty process: as shown in Figure 1, connecting external gas source is that gas cavity volume 11 is filled with pressurized air, promotion piston 5 moves to the left side of piston cavity 12, at this moment the filter interface 3 on upper valve body 1 and the dirty chamber 4 of storage are communicated with, drain outlet 6 is in closed state, the liquid water that filter leaches in the course of the work enters the dirty chamber 4 of storage by filter interface 3 under the effect of air pressure, completes thus the dirty process of collection.
Blowdown process: as shown in Figure 2, cut off external gas source, then by the pressurized air emptying in gas cavity volume 11, the pressure difference now producing because lifting surface area is different with right side stress surface B due to left side stress surface A in the stage casing pressure-bearing portion of piston 5, promoting piston 5 moves right, when piston 5 moves to low order end, be closed and cover 7 and withstand, now storing up dirty chamber 4 is communicated with drain outlet 6, filter interface 3 is in closed state, the liquid water of collecting in the dirty process of collection is discharged in external environment by drain outlet 6, completes thus blowdown process.
After liquid water discharge, again connect external gas source, restart to collect dirty process, so reciprocally periodic duty, has realized the continuous function to filter draining.
The utility model, in the dirty process of collection and blowdown process, can make respectively drain outlet and filter interface in gastight closed state, has avoided the phenomenon of long air draft to occur.
Claims (6)
1. a locomotive air source system filter Pneumatic draining valve, it is characterized in that, comprise a housing, on described housing, be provided with filter interface, store up dirty chamber, drain outlet, piston cavity and heating stick, described filter interface, the dirty chamber of described storage and described drain outlet are all opened on described piston cavity; In described piston cavity, piston is installed, between described piston and the right-hand member of described piston cavity, form one can inflation/deflation gas cavity volume; Described piston is dumbbell shape, is divided into left section of piston portion, right section of piston portion and stage casing pressure-bearing portion: described stage casing pressure-bearing portion is provided with left side stress surface and right side stress surface, and the area of described left side stress surface is less than the area of described right side stress surface.
2. locomotive air source system filter Pneumatic draining valve according to claim 1, is characterized in that, described housing comprises upper valve body and the lower valve body of sealing docking; The dirty chamber of described filter interface and described storage is located on described upper valve body, and described drain outlet and described piston cavity are located on described lower valve body.
3. locomotive air source system filter Pneumatic draining valve according to claim 1 and 2, is characterized in that, the diameter of described left section of piston portion is less than the diameter of described right section of piston portion.
4. locomotive air source system filter Pneumatic draining valve according to claim 2, is characterized in that, upper valve body and the lower valve body of described sealing docking are to be connected by screw, and with O RunddichtringO, seal between described upper valve body and described lower valve body.
5. locomotive air source system filter Pneumatic draining valve according to claim 1 and 2, is characterized in that, the right-hand member of described piston cavity is to seal by a closing cap.
6. locomotive air source system filter Pneumatic draining valve according to claim 1 and 2, is characterized in that, on left section of piston portion of described piston and right section of piston portion, is provided with this special seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320579339.2U CN203571150U (en) | 2013-09-18 | 2013-09-18 | Air control water draining valve for locomotive air source system filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320579339.2U CN203571150U (en) | 2013-09-18 | 2013-09-18 | Air control water draining valve for locomotive air source system filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203571150U true CN203571150U (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320579339.2U Expired - Fee Related CN203571150U (en) | 2013-09-18 | 2013-09-18 | Air control water draining valve for locomotive air source system filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203571150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453166A (en) * | 2013-09-18 | 2013-12-18 | 石家庄嘉祥精密机械有限公司 | Pneumatic draining valve for locomotive air source system filter |
-
2013
- 2013-09-18 CN CN201320579339.2U patent/CN203571150U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453166A (en) * | 2013-09-18 | 2013-12-18 | 石家庄嘉祥精密机械有限公司 | Pneumatic draining valve for locomotive air source system filter |
| CN103453166B (en) * | 2013-09-18 | 2015-12-09 | 石家庄嘉祥精密机械有限公司 | Locomotive air source system filters Pneumatic draining valve |
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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: 20140430 Termination date: 20180918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |