CN204553965U - A kind of safety valve - Google Patents
A kind of safety valve Download PDFInfo
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- CN204553965U CN204553965U CN201520254091.1U CN201520254091U CN204553965U CN 204553965 U CN204553965 U CN 204553965U CN 201520254091 U CN201520254091 U CN 201520254091U CN 204553965 U CN204553965 U CN 204553965U
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Abstract
A kind of safety valve, comprise valve body, valve gap, piston and valve rod, the cavity that valve body and valve gap are formed is divided into piston upper chamber body and piston lower chamber by described piston, described piston is provided with shrinkage cavity A, valve seat is provided with in described valve body, the described valve rod the other end and valve seat coordinate piston lower chamber are divided into the cavity A be communicated with regulator and the cavity B be communicated with exhaust valve, described valve rod is provided with shrinkage cavity B, in described valve body, be provided with spring below valve rod, the aperture of described shrinkage cavity B is less than the inflation aperture of exhaust valve.The utility model is arranged between the regulator of anti-skid device and exhaust valve, when system is normal, if wheel slides, regulator can normally generation effect, play normal anti-skidding effect, when the flexible pipe of connection adjustor breaks, the pressure balance of exhaust valve can be made to be maintained, make master cylinder maintain closedown to the path of air, the master cylinder controlled by this regulator still normally can implement braking.
Description
Technical field
The utility model belongs to rolling stock technology field, particularly a kind of safety valve for being arranged between the regulator of anti-skid device and exhaust valve.
Background technique
In the anti-skid device of existing rail truck, exhaust valve is all directly be connected with regulator by flexible pipe, like this, when the flexible pipe of connection adjustor breaks, in exhaust valve, the pressure air of respective cavities can be revealed fast, thus the pressure balance in exhaust valve cannot be maintained, and causes exhaust valve inside brake cylinder to be opened to the path of air, thus make normally to implement braking by the master cylinder of this regulator, cause potential safety hazard.
Model utility content
Goal of the invention of the present utility model is: for above-mentioned Problems existing, provides a kind of when the flexible pipe of connection adjustor breaks, and makes the master cylinder controlled by this regulator still normally can implement the safety valve braked.
The technical solution of the utility model is achieved in that a kind of safety valve, comprise valve body, valve gap and be arranged on valve body and valve gap form piston in cavity and valve rod, described valve rod one end is connected with piston, the cavity that valve body and valve gap are formed is divided into piston upper chamber body and piston lower chamber by described piston, it is characterized in that: on described piston, be provided with shrinkage cavity A, valve seat is provided with in described valve body, the described valve rod the other end and valve seat coordinate piston lower chamber are divided into the cavity A be communicated with regulator and the cavity B be communicated with exhaust valve, described valve rod is provided with shrinkage cavity B, in described valve body, spring is provided with below valve rod, described valve rod makes the valve port of valve seat be in closed condition under the action of the spring, described piston upper chamber body is communicated with cavity A by shrinkage cavity A, described cavity A is communicated with cavity B by shrinkage cavity B, the aperture of described shrinkage cavity B is less than the inflation aperture of exhaust valve.
Safety valve described in the utility model, it is provided with at described piston circumference the lamina membranacea fitted tightly with it, and described lamina membranacea is pressed on valve body by valve gap, by coordinating of piston and lamina membranacea, piston upper chamber body is communicated with cavity A by means of only shrinkage cavity A.
Safety valve described in the utility model, it is provided with O RunddichtringO on described valve seat, between valve seat and valve body, sealing gasket is provided with on described valve rod, with valve seat corresponding part, by coordinating of valve rod and valve seat, the valve port making valve seat in off position time, described cavity A is communicated with cavity B by means of only shrinkage cavity B.
Safety valve described in the utility model, it is provided with filter dirt sheet at the suction port end of described valve stem end, shrinkage cavity B.
Safety valve described in the utility model, shrinkage cavity B described in it forms by the axial direction part path arranged along valve rod axle center and along the radial section path that valve rod radial direction is arranged.
The utility model is arranged between the regulator of anti-skid device and exhaust valve, when system is normal, if wheel slides, regulator can normally generation effect, plays normal anti-skidding effect, when the flexible pipe of connection adjustor breaks, by the setting of safety valve, the pressure balance of exhaust valve can be made to be maintained, and make master cylinder maintain closedown to the path of air, the master cylinder controlled by this regulator still normally can implement braking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of piston in the utility model.
Fig. 3 is the structural representation of valve rod in the utility model.
Mark in figure: 1 is valve body, and 2 is valve gap, and 3 is piston, 4 is valve rod, and 5 is piston upper chamber body, and 6 is piston lower chamber, 7 is shrinkage cavity A, and 8 is valve seat, and 9 is cavity A, 10 is cavity B, 11 for shrinkage cavity B, 11a be axial direction part path, 11b is radial section path, and 12 is spring, and 13 is lamina membranacea, 14 is O RunddichtringO, and 15 is sealing gasket, and 16 is filter dirt sheet.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As Fig. 1, shown in 2 and 3, a kind of safety valve, comprise valve body 1, valve gap 2 and be arranged on valve body 1 and valve gap 2 form piston 3 in cavity and valve rod 4, described valve rod 4 one end is connected with piston 3, the cavity that valve body 1 and valve gap 2 are formed is divided into piston upper chamber body 5 and piston lower chamber 6 by described piston 3, described piston 3 is provided with shrinkage cavity A7, valve seat 8 is provided with in described valve body 1, described valve rod 4 the other end and valve seat 8 coordinate piston lower chamber 6 are divided into the cavity A9 be communicated with regulator and the cavity B10 be communicated with exhaust valve, described valve rod 4 is provided with shrinkage cavity B11, in described valve body 1, spring 12 is provided with below valve rod 4, described valve rod 4 makes the valve port of valve seat 4 be in closed condition under the effect of spring 12, described piston 3 circumference is provided with the lamina membranacea 13 fitted tightly with it, described lamina membranacea 13 is pressed on valve body 1 by valve gap 2, by coordinating of piston 3 and lamina membranacea 13, piston upper chamber body 5 is communicated with cavity A9 by means of only shrinkage cavity A7, on described valve seat 8, O RunddichtringO 14 is provided with between valve seat 8 and valve body 1, on described valve rod 4, valve seat 8 corresponding part is provided with sealing gasket 15, by coordinating of valve rod 4 and valve seat 8, the valve port making valve seat 8 in off position time, described cavity A9 is communicated with cavity B10 by means of only shrinkage cavity B11, the aperture of described shrinkage cavity B11 is less than the inflation aperture of exhaust valve, structure content disclosed in Chinese utility model patent 201410630556.9 of described exhaust valve.
Wherein, the suction port end of described valve rod 4 end, shrinkage cavity B11 is provided with filter dirt sheet 16, described shrinkage cavity B11 to form by the axial direction part path 11a arranged along valve rod 4 axle center and along the radial section path 11b that valve rod 4 radial direction is arranged.
Working principle of the present utility model is:
As shown in Figure 1, exhaust valve enters in cavity B by the pressure air that air-filled pore pours, now the valve port of valve seat is in closed condition under valve rod effect, pressure air in cavity B enters in cavity A via shrinkage cavity B, pressure air in cavity A enters in piston upper chamber body via shrinkage cavity A again, till the pressure balance in piston upper chamber body, cavity A and cavity B.
When system is normal, if wheel slides, regulator generation effect, namely the path be communicated with air opened by regulator, air pressure in cavity A discharges fast, due to the restriction by shrinkage cavity A on piston, pressure air in piston upper chamber body can not disappear very soon, thus make piston upper and lower cavity body form pressure reduction, pressure reduction promotes piston and moves down fast, in moving process, piston and template remain the sealing state fitted tightly, by the movement of piston, promote valve rod and open valve port, pressure air in cavity B is discharged fast, discharge fast by the cavity indoor pressure air be communicated with cavity B in exhaust valve, exhaust valve action, produce normal anti-skidding effect.
When the flexible pipe of connection adjustor breaks, air pressure in cavity A is leaked, the air pressure of piston upper chamber body is also leaked together by shrinkage cavity A simultaneously, along with the prolongation of time, pressure air in piston upper chamber body and cavity A is substantially emptying and pressure is tending towards equal, valve rod makes valve port be in closed condition under the action of the spring, although the pressure air now in cavity A still can enter into cavity A through shrinkage cavity B, but the aperture of shrinkage cavity B is less than the inflation aperture of exhaust valve, therefore the pressure balance of exhaust valve still can be maintained, master cylinder is made to maintain closedown to the path of air, the master cylinder controlled by this regulator still normally can implement braking.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a safety valve, comprise valve body (1), valve gap (2) and be arranged on valve body (1) and valve gap (2) form piston (3) in cavity and valve rod (4), described valve rod (4) one end is connected with piston (3), the cavity that valve body (1) and valve gap (2) are formed is divided into piston upper chamber body (5) and piston lower chamber (6) by described piston (3), it is characterized in that: on described piston (3), be provided with shrinkage cavity A(7), valve seat (8) is provided with in described valve body (1), described valve rod (4) the other end coordinate with valve seat (8) piston lower chamber (6) is divided into the cavity A(9 be communicated with regulator) and the cavity B(10 that is communicated with exhaust valve), described valve rod (4) is provided with shrinkage cavity B(11), in described valve body (1), valve rod (4) below is provided with spring (12), described valve rod (4) makes the valve port of valve seat (4) be in closed condition under the effect of spring (12), described piston upper chamber body (5) is by shrinkage cavity A(7) with cavity A(9) be communicated with, described cavity A(9) by shrinkage cavity B(11) with cavity B(10) be communicated with, described shrinkage cavity B(11) aperture be less than the inflation aperture of exhaust valve.
2. safety valve according to claim 1, it is characterized in that: be provided with the lamina membranacea (13) fitted tightly with it at described piston (3) circumference, described lamina membranacea (13) is pressed on valve body (1) by valve gap (2), by coordinating of piston (3) and lamina membranacea (13), make piston upper chamber body (5) by means of only shrinkage cavity A(7) with cavity A(9) be communicated with.
3. safety valve according to claim 1, it is characterized in that: on described valve seat (8), between valve seat (8) and valve body (1), be provided with O RunddichtringO (14), above, with valve seat (8) corresponding part sealing gasket (15) is provided with at described valve rod (4), by coordinating of valve rod (4) and valve seat (8), the valve port making valve seat (8) in off position time, described cavity A(9) by means of only shrinkage cavity B(11) with cavity B(10) be communicated with.
4. safety valve according to claim 3, is characterized in that: at described valve rod (4) end, shrinkage cavity B(11) suction port end be provided with filter dirt sheet (16).
5. safety valve as claimed in any of claims 1 to 4, is characterized in that: described shrinkage cavity B(11) form by the axial direction part path (11a) arranged along valve rod (4) axle center and along the radial section path (11b) that valve rod (4) radial direction is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520254091.1U CN204553965U (en) | 2015-04-24 | 2015-04-24 | A kind of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520254091.1U CN204553965U (en) | 2015-04-24 | 2015-04-24 | A kind of safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553965U true CN204553965U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520254091.1U Active CN204553965U (en) | 2015-04-24 | 2015-04-24 | A kind of safety valve |
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| Country | Link |
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| CN (1) | CN204553965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763831A (en) * | 2015-04-24 | 2015-07-08 | 四川制动科技股份有限公司 | Safety valve |
-
2015
- 2015-04-24 CN CN201520254091.1U patent/CN204553965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763831A (en) * | 2015-04-24 | 2015-07-08 | 四川制动科技股份有限公司 | Safety valve |
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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. |