CN106979362B - Pneumatic control reversing valve capable of automatically compensating air pressure - Google Patents
Pneumatic control reversing valve capable of automatically compensating air pressure Download PDFInfo
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- CN106979362B CN106979362B CN201710267730.1A CN201710267730A CN106979362B CN 106979362 B CN106979362 B CN 106979362B CN 201710267730 A CN201710267730 A CN 201710267730A CN 106979362 B CN106979362 B CN 106979362B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/184—Combined check valves and actuated valves
- F16K15/1848—Check valves combined with valves having a rotating tap or cock
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a pneumatic control reversing valve capable of automatically compensating air pressure, which comprises a valve body, a valve seat, a valve rod and a spring, wherein the spring and the valve rod are sequentially inserted into the valve body; in addition, the valve comprises a one-way assembly, wherein the one-way assembly is assembled and connected with a valve seat groove of the valve seat, the valve seat groove is connected with the second working port through a valve body channel, the valve seat groove is connected with the control port through a valve seat channel, the one-way assembly comprises a valve core and a Y-shaped ring, the valve core is a T-shaped annular cylinder, and the annular cylinder of the valve core is provided with a support ring protruding in the radial direction; the Y-shaped ring is a hollow annular body, the Y-shaped ring is sleeved with the valve core, and a supporting pin of the Y-shaped ring is connected with the supporting ring. The invention has simple and compact structure, low failure rate, capability of realizing air pressure self-compensation and longer service life.
Description
Technical Field
The invention relates to a vehicle gear shifting system, in particular to a pneumatic control reversing valve for automatically compensating air pressure of a vehicle transmission.
Background
With the continuous standardization of the management of the road transportation industry in China, the era of high-efficiency and lean operation comes, and the requirement is that the industry realizes higher profit level by measures of improving the transportation efficiency, reducing the self weight of a vehicle body, reducing the fuel consumption level of unit freight volume and the like. The heavy truck is required by highway freight users to have the properties of high speed, heavy load, light weight, good fuel economy, high attendance rate and the like, and the product demand gradually shifts to high-end. Heavy duty products carrying high horsepower, higher gear transmissions are expected to become more prevalent, such as 16-, 20-, and 24-gear transmissions.
The existing pneumatic control reversing valve is an element which changes the gas flow direction by using gas pressure to make the valve rod and the valve body move relatively. The pneumatic control reversing valve structure mainly comprises a valve body, a valve seat, a valve rod and a spring, wherein the valve body is provided with an air inlet, two working ports (a first working port and a second working port), a control port and two exhaust ports. The on-off air of the control port is used for switching the ventilation of the two working ports of the valve. The specific working principle of the pneumatic control reversing valve is as follows: due to the action of the spring, the pneumatic control reversing valve is in an initial state that the air inlet is communicated with the first working port, when air enters the air inlet, the air flows out of the first working port, and a load connected with the first working port is started; when the control port is ventilated, the air pressure overcomes the spring force when reaching a certain value due to the action of the air pressure, the valve rod is pushed to move, the state of the air control reversing valve is changed, the air inlet is communicated with the second working port, and when the air inlet is ventilated, the air flows out from the second working port, so that a load connected with the second working port is started; when the control port is in air relief, the valve rod returns to the initial state under the action of the spring and is continuously communicated with the first working port. Therefore, the on-off of the control port can control which working port is ventilated, and the purpose of reversing is achieved. However, in practical use, the stability of the air source at the control port, the insufficiency of the air pressure and the leakage of the air can cause unsmooth reversing and failed reversing, so that the whole air path system is paralyzed to stop working.
Therefore, the pneumatic control reversing valve in the prior art has some technical problems which need to be solved urgently.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the pneumatic reversing valve which is simple in structure, prolongs the service life of a product and reduces the failure rate so as to solve the problems in the prior art.
In order to realize the purpose, the invention adopts the following technical scheme:
a pneumatic control reversing valve capable of automatically compensating air pressure comprises a valve body, a valve seat, a valve rod and a spring, wherein the spring and the valve rod are sequentially inserted and connected with the valve body, two ends of the spring are respectively connected with the inner wall of the valve body and the valve rod, the valve seat is connected with the opening end of the valve body, an air inlet, a first working port, a second working port and two air outlets are formed in the valve body, and a control port is formed in the valve seat; the one-way assembly is assembled and connected with a valve seat groove of the valve seat, the valve seat groove is connected with the second working port through a valve body channel, the valve seat groove is connected with the control port through a valve seat channel, the one-way assembly comprises a valve core and a Y-shaped ring, wherein the valve core is a T-shaped annular cylinder, two ends of the valve core are both provided with a groove, and the annular cylinder of the valve core is provided with a support ring protruding in the radial direction; the Y-shaped ring is a hollow annular body, the valve core is sleeved and connected with the Y-shaped ring, and a supporting pin of the Y-shaped ring is connected with the supporting ring.
According to the pneumatic control reversing valve capable of automatically compensating air pressure, the one-way assembly further comprises a supporting seat, the supporting seat is an annular body, the supporting seat is provided with a throttling hole, one side of the supporting seat is connected with the valve body, and the other side of the supporting seat is connected with the valve core.
According to the pneumatic control reversing valve capable of automatically compensating air pressure, the one-way assembly further comprises a fixed seat, the fixed seat is an annular body, one side of the fixed seat is connected with the straight part of the valve core, and the other side of the fixed seat is connected with the Y-shaped ring.
According to the pneumatic control reversing valve capable of automatically compensating air pressure, disclosed by the embodiment of the invention, the one-way assembly further comprises an O-shaped ring, and the O-shaped ring is assembled and connected with the supporting seat.
The design idea of this application is, develops a section and is superior to original gas accuse switching-over valve from structure and principle, and the gas accuse switching-over valve of this structure can enough guarantee traditional gas accuse switching-over valve's all functions, can better pressurize again, can automatic compensation when atmospheric pressure is not enough, makes product property ability more reliable, and the life-span is longer.
Compared with the prior art, the invention has the following advantages and positive effects due to the adoption of the technical scheme:
firstly, the air pressure self-compensation device has a simple and compact structure, not only can realize the reversing function, but also can realize the air pressure self-compensation, and prevents the reversing failure caused by insufficient air pressure at a control port or air pressure leakage at the control port;
secondly, this application product reliability is high, long service life, does not influence the outward appearance moreover.
Of course, it is not necessary for any particular embodiment of the inventive concept to have all of the above technical effects at the same time.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
fig. 2 is an enlarged schematic view of the unidirectional assembly of fig. 1.
Detailed Description
Several preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The invention is intended to cover alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, and so forth have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
Referring to fig. 1 and 2, the pneumatic control reversing valve capable of automatically compensating air pressure comprises a valve body 10, a valve seat 20, a valve rod 30 and a spring 40, wherein the spring 40 and the valve rod 30 are sequentially inserted and connected with the valve body 10, two ends of the spring 40 are respectively connected with the inner wall of the valve body 10 and the valve rod 30, the spring 40 is a compression spring, the valve seat 20 is connected with an opening end of the valve body 10, the valve body 10 is provided with an air inlet 11, a first working port 12, a second working port 13 and two air outlets, and the valve seat 20 is provided with a control port 22.
The pneumatic control reversing valve further comprises a one-way assembly 50, the one-way assembly 50 is assembled in a valve seat groove 23 of the valve seat 20, the valve seat groove 23 is connected with the second working port 13 through a valve body channel 14, the valve seat groove 23 is connected with the control port 22 through a valve seat channel 21, the one-way assembly 50 comprises a valve core 51 and a Y-shaped ring 52, wherein the valve core 51 is a T-shaped annular cylinder, namely the valve core 51 comprises a straight part and an annular cylinder which are combined to form a T shape, two ends of the valve core 51 are provided with a groove, the groove is used for facilitating ventilation, and a protruding radial support ring 511 is arranged at the annular cylinder of the valve core 51; the Y-shaped ring 52 is a hollow annular body, the Y-shaped ring 52 is sleeved and connected with the valve core 51, a leg of the Y-shaped ring 52 is connected with the supporting ring 511, and the supporting ring 511 is used for resisting against the Y-shaped ring 52 to prevent the Y-shaped ring 52 from moving and influencing the gas passing.
In addition, the check assembly 50 further includes a support seat 53, the support seat 53 is an annular body, the support seat 53 has an orifice 531, one side of the support seat 53 is connected to the valve body 10, and the other side of the support seat 53 is connected to the valve plug 51. As shown, at the orifice 531 of the support base 53, a support base groove connected to the valve body passage 14 may be formed for facilitating the flow of gas, and the gas flows into the support base groove first and then overflows from the orifice 531.
In addition, the one-way assembly 50 further includes a fixing seat 54 and an O-ring 55, the fixing seat 54 is an annular body, the fixing seat 54 is sleeved on the valve core 51, one side of the fixing seat 54 is connected with the straight portion of the valve core 51, and the other side of the fixing seat 54 is connected with the Y-ring 52. The function of the fixing seat 54 is to reinforce the strength of the Y-ring 52, and if the length of the Y-ring 52 is too long, the rigidity is reduced, so that the fixing seat 54 is used for transition to improve the strength of the Y-ring 52, and as shown in the figure, the fixing seat 54 is stepped to protect the movable leg of the Y-ring 52. The O-ring 55 is assembled with the support base 53 and located at the connection position of the valve body 10 and the valve seat 20, so as to prevent gas from leaking.
The working principle of the application is as follows: when the control port 22 of the pneumatic control reversing valve is ventilated, the air inlet 11 is communicated with the second working port 13, and after the air pressure of the second working port 13 flows to a rear load, a small part of the air pressure enters the one-way assembly 50 through the valve body channel 14. The Y-ring 52 of the one-way assembly 50 is a one-way sealing ring and air pressure cannot enter only. When the air pressure of the control port 22 is insufficient or air leaks, the air pressure of the one-way component 50 enters the control port 22 through the valve seat channel 21 to compensate the insufficient air pressure of the control port 22, so that the function of the pneumatic control reversing valve is maintained to be normal. When the pressure in the control port 22 is sufficient, the Y-shaped ring 52 of the one-way assembly 50 is in a closed state, and the pressure cannot flow backwards, so that the pressure maintaining state is realized.
In summary, due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
firstly, the air pressure self-compensation device has a simple and compact structure, not only can realize the reversing function, but also can realize the air pressure self-compensation, and prevents the reversing failure caused by insufficient air pressure at a control port or air pressure leakage at the control port;
secondly, the product has high reliability and long service life, and does not influence the appearance.
The preferred embodiments of the invention are provided solely to aid in the illustration of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents. The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and it is intended that all equivalent variations and modifications of the present invention as those skilled in the art can be made without departing from the spirit and scope of the present invention.
Claims (4)
1. A pneumatic control reversing valve capable of automatically compensating air pressure comprises a valve body, a valve seat, a valve rod and a spring, wherein the spring and the valve rod are sequentially inserted and connected with the valve body, two ends of the spring are respectively connected with the inner wall of the valve body and the valve rod, the valve seat is connected with the opening end of the valve body, an air inlet, a first working port, a second working port and two air outlets are formed in the valve body, and a control port is formed in the valve seat; it is characterized by also comprising a one-way component, wherein the one-way component is assembled and connected with a valve seat groove of the valve seat, the valve seat groove is connected with the second working port through a valve body channel, the valve seat groove is connected with the control port through a valve seat channel, the one-way component comprises a valve core and a Y-shaped ring, the Y-shaped ring is arranged on the valve core,
the valve core is a T-shaped annular cylinder, two ends of the valve core are both provided with a groove, and the annular cylinder of the valve core is provided with a support ring protruding in the radial direction;
the Y-shaped ring is a hollow annular body, the valve core is sleeved and connected with the Y-shaped ring, and a supporting pin of the Y-shaped ring is connected with the supporting ring.
2. The pneumatic-control reversing valve capable of automatically compensating air pressure according to claim 1, wherein the one-way assembly further comprises a support seat, the support seat is an annular body, the support seat is provided with an orifice, one side of the support seat is connected with the valve body, and the other side of the support seat is connected with the valve core.
3. The pneumatic control reversing valve capable of automatically compensating air pressure according to claim 2, wherein the one-way assembly further comprises a fixed seat, the fixed seat is an annular body, one side of the fixed seat is connected with the straight part of the valve core, and the other side of the fixed seat is connected with the Y-shaped ring.
4. The pneumatic operated directional valve for automatically compensating air pressure according to claim 3, wherein the one-way assembly further comprises an O-ring, and the O-ring is assembled and connected with the supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267730.1A CN106979362B (en) | 2017-04-21 | 2017-04-21 | Pneumatic control reversing valve capable of automatically compensating air pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267730.1A CN106979362B (en) | 2017-04-21 | 2017-04-21 | Pneumatic control reversing valve capable of automatically compensating air pressure |
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| Publication Number | Publication Date |
|---|---|
| CN106979362A CN106979362A (en) | 2017-07-25 |
| CN106979362B true CN106979362B (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710267730.1A Active CN106979362B (en) | 2017-04-21 | 2017-04-21 | Pneumatic control reversing valve capable of automatically compensating air pressure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7137161B2 (en) * | 2018-08-02 | 2022-09-14 | Smc株式会社 | Seal structure in spool type switching valve and its spool type switching valve |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA771041B (en) * | 1976-05-06 | 1977-12-28 | Commercial Shearing | Control valves |
| JPH09200478A (en) * | 1996-01-16 | 1997-07-31 | Canon Inc | Facsimile equipment |
| CN1360156A (en) * | 2001-12-30 | 2002-07-24 | 深圳商巨自动化有限公司 | Composite valve |
| CN101943277A (en) * | 2010-08-13 | 2011-01-12 | 陆桂义 | Pneumatic two-position four-way slide valve |
| CN202017792U (en) * | 2011-04-28 | 2011-10-26 | 浙江欧瑞泰汽配有限公司 | Pneumatic reversal valve for automobile gearbox |
| CN103672068B (en) * | 2013-12-05 | 2016-09-07 | 吴忠仪表有限责任公司 | Reversal valve |
| CN204004562U (en) * | 2014-07-17 | 2014-12-10 | 浙江亿日气动科技有限公司 | The double air controlled selector valve of air pressure self-locking |
| CN205243997U (en) * | 2015-12-18 | 2016-05-18 | 黄培华 | Hydraulic pressure lock speed governing combination switching -over valve |
| CN205534375U (en) * | 2016-01-29 | 2016-08-31 | 河南骏通车辆有限公司 | Meso position throttle type gas accuse switching -over valve |
| CN206637066U (en) * | 2017-04-21 | 2017-11-14 | 浙江亿日气动科技有限公司 | The Pneumatic reversal valve of automatic compensation air pressure |
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2017
- 2017-04-21 CN CN201710267730.1A patent/CN106979362B/en active Active
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