CN203516862U - Hand brake valve with check valve - Google Patents
Hand brake valve with check valve Download PDFInfo
- Publication number
- CN203516862U CN203516862U CN201320667387.7U CN201320667387U CN203516862U CN 203516862 U CN203516862 U CN 203516862U CN 201320667387 U CN201320667387 U CN 201320667387U CN 203516862 U CN203516862 U CN 203516862U
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- CN
- China
- Prior art keywords
- valve
- return spring
- rubber
- elbow
- valve body
- 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 - Fee Related
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Abstract
The utility model discloses a hand brake valve with a check valve. The hand brake valve comprises a hand valve body (1) with an air inlet passage and an air outlet passage. The air inlet passage is connected with an elbow (3) through a transitional joint (2), and a vent passage (4) is arranged in the elbow joint. The hand brake valve is characterized in that the check valve is arranged at the junction of the transitional joint and the elbow and comprises a rubber valve (5) and a return spring (6), the top of the rubber valve contacts with the bottom of the return spring, and a step (7) matched with the rubber valve is arranged at a vent hole of the vent passage (4); when air intake pressure of the air intake passage is larger than elasticity of the return spring, the rubber valve is separated from the stop so that the valve body is opened; when the air intake pressure of the air intake passage is smaller than the elasticity of the return spring, the rubber valve falls to the step so that the valve body is closed. Since the check valve is added at the elbow of the air inlet, the integration of the check valve, the hand brake valve and the elbow is achieved, the assembling efficiency of the whole vehicle is improved, and resources are saved.
Description
Technical field
The utility model relates to a kind of hand valve, particularly be a kind of hand valve with one-way valve.
Background technique
In the braking system of large vehicle, especially, in the braking system of lorry, conventionally adopt air brake valve to implement braking.The working principle of this brake valve is that the pressure difference that the pressurized air inputted by brake valve entry end forms in atmospheric pressure cavity promotes the motion of the piston in brake valve, thereby reaches braking.Therefore,, in braking process, the problems such as the leakage of gas and backflow will directly have influence on validity and the Security of braking.For this reason, in actual applications, conventionally can adopt the mode of pipe joint connect an one-way valve at the entrance front end of braking hand valve, gas backstreaming when preventing that in gas circuit, air pressure declines, the entry end air pressure of hand valve declines thereupon, causes braking failure.So just need to an one-way valve be installed when hand valve is installed in addition, make installation process complicated, and efficiency of assembling be low.
Summary of the invention
In view of the problem that known technology exists, the technical problems to be solved in the utility model is to be to provide a kind of hand valve with one-way valve.
For solving the problems of the technologies described above, the utility model takes following technological scheme to complete:
A kind of hand valve with one-way valve, comprise valve body, be arranged on mangetic core assembly and the handle of valve inner, described valve body be provided with into, outlet passageway, described gas-entered passageway is connected with elbow connection by transit joint, in described elbow connection, be provided with air vent, it is characterized in that: described transit joint and elbow connection joint are provided with one-way valve, described one-way valve comprises rubber valve and return spring, described rubber valve top contacts with return spring bottom, the ventilating hole place of described air vent is provided with the step matching with rubber valve, when gas-entered passageway suction pressure is greater than the elastic force of return spring, thereby rubber valve and step depart from, valve body is opened, when gas-entered passageway suction pressure is less than the elastic force of return spring, thereby falling into step, rubber valve makes valve body sealing.
The beneficial effects of the utility model are: at the elbow connection position of suction port, increase the structure of one-way valve, realize the integrated of one-way valve, hand valve and elbow connection, make structure compacter, improve the efficiency of assembling of car load, saved resource.
Accompanying drawing explanation
Further describe by reference to the accompanying drawings again embodiment below:
Fig. 1 is the utility model structural representation.
Embodiment
Accompanying drawing has represented structure of the present utility model and embodiment, each details of embodiment is described below more by reference to the accompanying drawings, this is with the hand valve of one-way valve, comprise valve body 1, be arranged on mangetic core assembly and the handle of valve inner, described valve body 1 be provided with into, outlet passageway, described gas-entered passageway is connected with elbow connection 3 by transit joint 2, in described elbow connection 3, be provided with air vent 4, described transit joint 2 is provided with one-way valve with elbow connection 3 joints, described one-way valve comprises rubber valve 5 and return spring 6, described rubber valve 5 tops contact with return spring 6 bottoms, the ventilating hole place of described air vent 4 is provided with the step 7 matching with rubber valve 5, when gas-entered passageway suction pressure is greater than the elastic force of return spring 6, thereby rubber valve 5 departs from valve body is opened with step 7, when gas-entered passageway suction pressure is less than the elastic force of return spring 6, thereby falling into step 7, rubber valve 5 makes valve body sealing, rubber valve 5 is with after step 7 in air vent 4 contacts, rubber valve 5 makes valve body sealing, and elbow connection 3 and transit joint 2 are separated, between described elbow connection 3 and rubber valve 5, just formed A chamber, between described rubber valve 5 and transit joint 2, form B chamber, during the work of hand valve, the pressurized air of suction port is through the A chamber of elbow connection 3, air pressure backs down rubber valve 5 and enters B chamber, pressurized air enters hand valve body by elbow connection 3, when the air pressure of suction port reduces, the pressure in A chamber will be less than the pressure in B chamber, now rubber valve 5 return under the effect of return spring 6 contacts with the step 7 in air vent 4, be that rubber valve 5 is closed, the pressurized air in B chamber just can not reduce with the air pressure in A chamber like this, thereby play single effect, because the working principle of hand valve is prior art, the patent can application reference number 200920148630.8 < < with the hand valve > > of one-way function, at this, do not repeat.Although the utility model simplicity of design, can reach very useful effect, Bi Nenggei enterprise brings better benefit.
Claims (1)
1. the hand valve with one-way valve, comprise valve body (1), be arranged on mangetic core assembly and the handle of valve inner, described valve body (1) be provided with into, outlet passageway, described gas-entered passageway is connected with elbow connection (3) by transit joint (2), in described elbow connection (3), be provided with air vent (4), it is characterized in that: described transit joint (2) is provided with one-way valve with elbow connection (3) joint, described one-way valve comprises rubber valve (5) and return spring (6), described rubber valve (5) top contacts with return spring (6) bottom, the ventilating hole place of described air vent (4) is provided with the step (7) matching with rubber valve (5), when gas-entered passageway suction pressure is greater than the elastic force of return spring (6), rubber valve (5) and step (7) thus depart from valve body opened, when gas-entered passageway suction pressure is less than the elastic force of return spring (6), rubber valve (5) falls into step (7) thereby makes valve body sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667387.7U CN203516862U (en) | 2013-10-28 | 2013-10-28 | Hand brake valve with check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320667387.7U CN203516862U (en) | 2013-10-28 | 2013-10-28 | Hand brake valve with check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516862U true CN203516862U (en) | 2014-04-02 |
Family
ID=50375794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320667387.7U Expired - Fee Related CN203516862U (en) | 2013-10-28 | 2013-10-28 | Hand brake valve with check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516862U (en) |
-
2013
- 2013-10-28 CN CN201320667387.7U patent/CN203516862U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20201028 |