CN201961301U - Pneumatic pressure maintaining valve - Google Patents
Pneumatic pressure maintaining valve Download PDFInfo
- Publication number
- CN201961301U CN201961301U CN 201120011319 CN201120011319U CN201961301U CN 201961301 U CN201961301 U CN 201961301U CN 201120011319 CN201120011319 CN 201120011319 CN 201120011319 U CN201120011319 U CN 201120011319U CN 201961301 U CN201961301 U CN 201961301U
- Authority
- CN
- China
- Prior art keywords
- position control
- valve body
- deflation hole
- hole
- control cover
- 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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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a pneumatic pressure maintaining valve which comprises a valve body. A through three-position control sleeve which can rotate in the valve body is arranged in the valve body. The upper end of the three-position control sleeve is connected with a handle. The three-position control sleeve is provided with three vent holes. A piston is arranged in the three-position control sleeve. A sealing element is arranged between the piston and the three-position control sleeve. A jacket is arranged between the three-position control sleeve and the valve body. The jacket is respectively provided with through holes correspondingly communicated with the three vent holes on the three-position control sleeve. The handle is rotated to drive the three-position control sleeve in the valve body to rotate so as to control the states that the three vent holes on the three-position control sleeve are respectively communicated with vent holes on the valve body, realize three different exhaust modes according to the actual conditions and effectively control a pressure of a brake cylinder when a train runs on a long steep grade, thereby reducing the fault rate of the train. Meanwhile, the valve can also be used for a mechanism which needs to be subjected to control of a pressure of an air pipeline.
Description
Technical field
The utility model relates to valve, the Pneumatic pressure hold-off valve in particularly a kind of brake system.
Background technology
When train during at long heavy down grade, if do not control train braking cylinder pressure, allow train slowly move, can cause the higher fault rate of train.
The utility model content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of pressure that can effectively control train driving brake cylinder when long steep grade, thereby reduce the Pneumatic pressure hold-off valve of train fault rate.
The technical solution of the utility model is achieved in that a kind of Pneumatic pressure hold-off valve, comprise valve body, it is characterized in that: in described valve body, be provided with up/down perforation, the three-position control cover that can in valve body, rotate, the upper end of described three-position control cover is connected with handgrip, described three-position control cover is provided with first deflation hole, second series pore and the 3rd deflation hole, the aperture of described the 3rd deflation hole is less than the aperture of first deflation hole, described second series pore is positioned at first deflation hole and the 3rd deflation hole top, in described three-position control cover, be provided with piston, the lower end of described piston and the round pin that is arranged on bottom in the three-position control cover against, in described piston, be provided with elastomeric element, described elastomeric element one end and piston abuts, its other end is resisted against the boss place in the three-position control cover, between described piston and three-position control cover, be provided with sealing member, described sealing member is positioned at the below of second series pore, the top of first deflation hole and the 3rd deflation hole, between described three-position control cover and valve body, be provided with sheath, described sheath and valve body do not have relative motion, on described sheath, be respectively arranged with and described first deflation hole, the corresponding through hole that is communicated with of second series pore and the 3rd deflation hole, described and deflation hole corresponding be communicated with of the cooresponding through hole of first deflation hole, describedly be communicated with the cooresponding through hole of first deflation hole by groove with second series pore and the cooresponding through hole of the 3rd deflation hole respectively with valve body.
Pneumatic pressure hold-off valve described in the utility model, its described first deflation hole and the 3rd deflation hole are on same horizontal surface.
Pneumatic pressure hold-off valve described in the utility model, its described sheath is made up of two sections, is provided with seal ring between described two sections.
Pneumatic pressure hold-off valve described in the utility model, it is in described three-position control cover, be provided with dirt filtrating screen below the round pin.
The utility model drives the interior three-position control cover rotation of valve body by rotating handgrip, thereby the control three-position control puts the state that three deflation holes are communicated with the valve body upper air-vent respectively, according to actual conditions, realize three kinds of different exhaust modes, effectively control the pressure of train driving brake cylinder when long steep grade, thereby reduce the train fault rate; This valve needing also to can be used for the mechanism of control air line pressure simultaneously.The utility model is simple in structure, easy to operate, simple installation.
Description of drawings
Structural representation when Fig. 1 is the EX of being in of the present utility model position.
Fig. 2 is the section drawing that three-position control puts EX position first deflation hole in the utility model.
Fig. 3 is the section drawing that three-position control puts HP position second series pore in the utility model.
Fig. 4 is the section drawing that three-position control puts SD position the 3rd deflation hole in the utility model.
Fig. 5 is the expansion scheme drawing of epimere sheath in the utility model.
Mark among the figure: 1 is valve body, and 2 is the three-position control cover, and 3 is handgrip, 4 is piston, and 5 is round pin, and 6 is elastomeric element, 7 is boss, and 8 is sealing member, and 9 is sheath, 10a, 10b, 10c are through hole, and 11 is deflation hole, and 12 is groove, 13 is dirt filtrating screen, and 14 is seal ring, and 15 is base, EX is first deflation hole, and HP is the second series pore, and SD is the 3rd deflation hole.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As Fig. 1,2, shown in 3 and 4, a kind of Pneumatic pressure hold-off valve, comprise valve body 1, described valve body 1 is connected with base 15, in described valve body 1, be provided with up/down perforation, the three-position control cover 2 that can in valve body 1, rotate, the upper end of described three-position control cover 2 is connected with handgrip 3, described three-position control cover 2 is provided with the first deflation hole EX, second series pore HP and the 3rd deflation hole SD, the aperture of described the 3rd deflation hole SD is less than the aperture of the first deflation hole EX, described first deflation hole EX and the 3rd deflation hole SD are on same horizontal surface, described second series pore HP is positioned at the first deflation hole EX and the 3rd deflation hole SD top, in described three-position control cover 2, be provided with piston 4, the lower end of described piston 4 and the round pin 5 that is arranged on bottoms in the three-position control cover 2 against, in described piston 4, be provided with elastomeric element 6, described elastomeric element is a spring, described spring lower end and piston 4 against, its upper end is resisted against boss 7 places in the three-position control cover 2, in described three-position control cover 2, round pin 5 belows are provided with dirt filtrating screen 13.
Wherein, between described piston 4 and three-position control cover 2, be provided with sealing member 8, described sealing member 8 is positioned at the top of below, the first deflation hole EX and the 3rd deflation hole SD of second series pore HP, between described three-position control cover 2 and valve body 1, be provided with sheath 9, described sheath 9 and valve body 1 no relative motion, described sheath 9 is made up of two sections, is provided with seal ring 14 between described two sections; As shown in Figure 5, on described sheath 9, be respectively arranged with through hole 10a, 10b, 10c with the described first deflation hole EX, second series pore HP and the corresponding connection of the 3rd deflation hole SD, the deflation hole 11 corresponding connections of described through hole 10a and valve body 1, described through hole 10b, 10c are communicated with through hole 10a by groove 12.
During use, rotation by handgrip, drive three-position control and be enclosed within the valve inner rotation, the control three-position control puts the state that three deflation holes are communicated with the valve body upper air-vent respectively, thereby according to the different efflux time of pressure air in the different position control brake cylinders.
Is the EX position when rotating handgrip when driving first deflation hole that three-position control puts with the corresponding connection of through hole 10a, the EX position is a feed-through locations, as shown in Figure 1, when this position, piston in the three-position control cover to first deflation hole without any control action, EX potential energy fast speed has been arranged pressure air, can not produce other extra control.
Is the HP position when rotating handgrip when driving second series pore that three-position control puts with the corresponding connection of through hole 10b, the HP position is the high pressure suppression, when initial condition, because the second series pore is positioned at the below of piston back seal spare, this moment, the second series pore was not communicated with brake cylinder, when the beginning exhaust, air pressure in the brake cylinder is greater than the elastic force of piston inner spring and downward friction drag, then pressure air makes the piston upward movement, after the sealing member on the piston is crossed second series pore position, the second series pore is communicated with brake cylinder, this moment, pressure air was discharged by through hole 10a through groove by the second series pore, the brake cylinder inner air pressure reduces gradually, and when brake cylinder internal pressure and friction drag upwards during less than the reset response power of spring, piston moves down under the application force of spring, sealing member on the piston moves to second series pore below once more, exhaust stops, thereby has realized that valve closing is exhaust no longer when pressure air is discharged to certain pressure slowly.
Is the SD position when rotating handgrip when driving the 3rd deflation hole that three-position control puts with the corresponding connection of through hole 10c, the SD position is slow exhaust position, when this position, piston in the three-position control cover to the 3rd deflation hole without any control action, the SD potential energy has been arranged pressure air in specific time slowly, can not produce other extra control.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. Pneumatic pressure hold-off valve, comprise valve body (1), it is characterized in that: in described valve body (1), be provided with up/down perforation, the three-position control cover (2) that can in valve body (1), rotate, the upper end of described three-position control cover (2) is connected with handgrip (3), described three-position control cover (2) is provided with first deflation hole (EX), second series pore (HP) and the 3rd deflation hole (SD), the aperture of described the 3rd deflation hole (SD) is less than the aperture of first deflation hole (EX), described second series pore (HP) is positioned at first deflation hole (EX) and the 3rd deflation hole (SD) top, in described three-position control cover (2), be provided with piston (4), the lower end of described piston (4) and the round pin (5) that is arranged on the interior bottom of three-position control cover (2) against, in described piston (4), be provided with elastomeric element (6), described elastomeric element (6) one ends and piston (4) against, the boss (7) that its other end is resisted against in the three-position control cover (2) is located, between described piston (4) and three-position control cover (2), be provided with sealing member (8), described sealing member (8) is positioned at the below of second series pore (HP), the top of first deflation hole (EX) and the 3rd deflation hole (SD), between described three-position control cover (2) and valve body (1), be provided with sheath (9), described sheath (9) and the no relative motion of valve body (1), on described sheath (9), be respectively arranged with and described first deflation hole (EX), corresponding through hole (the 10a that is communicated with of second series pore (HP) and the 3rd deflation hole (SD), 10b, 10c), the corresponding connection of deflation hole (11) of described through hole (10a) and valve body (1), described through hole (10b, 10c) be communicated with through hole (10a) by groove (12).
2. Pneumatic pressure hold-off valve according to claim 1 is characterized in that: described first deflation hole (EX) and the 3rd deflation hole (SD) are on same horizontal surface.
3. Pneumatic pressure hold-off valve according to claim 1 and 2 is characterized in that: described sheath (9) is made up of two sections, is provided with seal ring (14) between described two sections.
4. Pneumatic pressure hold-off valve according to claim 3 is characterized in that: in described three-position control cover (2), round pin (5) below is provided with dirt filtrating screen (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120011319 CN201961301U (en) | 2011-01-14 | 2011-01-14 | Pneumatic pressure maintaining valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120011319 CN201961301U (en) | 2011-01-14 | 2011-01-14 | Pneumatic pressure maintaining valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201961301U true CN201961301U (en) | 2011-09-07 |
Family
ID=44523832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120011319 Expired - Lifetime CN201961301U (en) | 2011-01-14 | 2011-01-14 | Pneumatic pressure maintaining valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201961301U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407440A (en) * | 2013-08-22 | 2013-11-27 | 瑞立集团瑞安汽车零部件有限公司 | Lever valve |
| CN107314002A (en) * | 2016-04-26 | 2017-11-03 | 罗伯特·博世有限公司 | Pressure holding valve device for the flush loop of the hydraulic circuit of closure |
-
2011
- 2011-01-14 CN CN 201120011319 patent/CN201961301U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103407440A (en) * | 2013-08-22 | 2013-11-27 | 瑞立集团瑞安汽车零部件有限公司 | Lever valve |
| CN103407440B (en) * | 2013-08-22 | 2016-03-16 | 瑞立集团瑞安汽车零部件有限公司 | Lever valve |
| CN107314002A (en) * | 2016-04-26 | 2017-11-03 | 罗伯特·博世有限公司 | Pressure holding valve device for the flush loop of the hydraulic circuit of closure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee after: Meisha Zhongke Brake Technology Co., Ltd. Address before: Three road 620010 Meishan province Sichuan City Dongpo District of Meishan science and Technology Industrial Park No. 68 Patentee before: Sichuan Brake Science and Technology Co. Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |