CN213512216U - Single pneumatic control reversing valve - Google Patents
Single pneumatic control reversing valve Download PDFInfo
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- CN213512216U CN213512216U CN202022178115.3U CN202022178115U CN213512216U CN 213512216 U CN213512216 U CN 213512216U CN 202022178115 U CN202022178115 U CN 202022178115U CN 213512216 U CN213512216 U CN 213512216U
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Abstract
The utility model discloses a single pneumatic-control reversing valve, which comprises a valve body, one side of valve body is provided with the control end cover, the opposite side of valve body is provided with the end cover that resets, the lateral wall of control end cover runs through and is provided with the control end air inlet, the inside wall of control end cover and be provided with first piston in one side of control end air inlet, the lateral wall of first piston is provided with first U type sealing washer, another lateral wall of first piston is provided with the case, the lateral wall of case is provided with the sealing washer, the lateral wall both ends of case are provided with the guide ring, another lateral wall of case is provided with the second piston, the lateral wall of second piston is provided with second U type sealing washer, the inside wall of valve body just is provided with the air flue in one side of case. The utility model discloses in, the control end of single pneumatic control switching-over valve is controlled by pulse air pressure signal and need not worry the problem of leaking, has enlarged the application range of this type of valve member.
Description
Technical Field
The utility model relates to an engineering machine tool technical field especially relates to a single pneumatic reversing valve.
Background
Compared with a double-pneumatic control reversing valve, the single-pneumatic control reversing valve has the advantages that the movement of the valve core in two directions can be realized only through one control end air inlet, however, due to the leakage problem of the valve core, the control air can only be in two states of continuous ventilation or disconnection ventilation and deflation when the valve core is reversed, the diversity of control modes of the pneumatic control system is greatly limited, in many pneumatic control systems, the signal for controlling the pneumatic control reversing valve can only be a pulse signal, namely the control signal is only connected at one instant, and the control signal can be interrupted after the reversing valve is reversed.
The pulse control mode greatly limits the application range of the single pneumatic control reversing valve, so that the single pneumatic control reversing valve for controlling the leakage of the air inlet end to be extremely small or even not to be leaked needs to be developed and can be controlled by a pulse control signal.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a single pneumatic control reversing valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the single pneumatic control reversing valve comprises a valve body, wherein a control end cover is arranged on one side of the valve body, a reset end cover is arranged on the other side of the valve body, a control end air inlet is formed in the side wall of the control end cover in a penetrating mode, a first piston is arranged on the inner side wall of the control end cover and on one side of the control end air inlet, a first U-shaped sealing ring is arranged on the side wall of the first piston, a valve core is arranged on the other side wall of the first piston, a sealing ring is arranged on the side wall of the valve core, guide rings are arranged at two ends of the side wall of the valve core, a second piston is arranged on the other side wall of the valve core, a second U-shaped sealing ring is arranged on the side wall of.
As a further description of the above technical solution:
the side wall of the valve body is provided with a port P, a port A, a port B, a port R and a port S in a penetrating way.
As a further description of the above technical solution:
the first piston has a larger volume than the second piston.
As a further description of the above technical solution:
the first U-shaped sealing ring is attached to the first piston.
As a further description of the above technical solution:
the second U-shaped sealing ring is attached to the second piston.
As a further description of the above technical solution:
one end of the air passage penetrates through the inner side wall of the reset end cover.
As a further description of the above technical solution:
and an arrow is arranged at the joint of the sealing ring and the inner side wall of the valve body.
The utility model discloses following beneficial effect has:
1. compared with the prior art, the first U-shaped sealing ring and the first piston are additionally arranged in the control end cover, the air source pulse control signal controls the first piston to act, and the first piston controls the valve core to act again, so that the control end of the single pneumatic control reversing valve can be controlled by the pulse air pressure signal without worrying about the leakage problem, and the application range of the valve is expanded.
2. Compared with the prior art, the single pneumatic control reversing valve has the advantages that the leakage amount of the air inlet end is controlled to be extremely small, and even the leakage is avoided.
Drawings
Fig. 1 is a left side sectional view of a valve core of a single pneumatic directional control valve according to the present invention;
fig. 2 is a sectional view of the valve core of the single pneumatic directional control valve of the present invention on the right side;
fig. 3 is a cross-sectional view of a conventional single pneumatic control directional valve of the present invention.
Illustration of the drawings:
1. a control end cap; 2. a first U-shaped seal ring; 3. a first piston; 4. a seal ring; 5. a valve core; 6. a valve body; 7. a guide ring; 8. a second piston; 9. a second U-shaped seal ring; 10. resetting the end cover; 11. a control end air inlet; 12. an airway; 13. arrows.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: a single pneumatic control reversing valve comprises a valve body 6, a P port, an A port, a B port, an R port and an S port are arranged on the side wall of the valve body 6 in a penetrating manner, a control end cover 1 is arranged on one side of the valve body 6, a reset end cover 10 is arranged on the other side of the valve body 6, a control end air inlet 11 is arranged on the side wall of the control end cover 1 in a penetrating manner, a first piston 3 is arranged on the inner side wall of the control end cover 1 and on one side of the control end air inlet 11, a first U-shaped sealing ring 2 is arranged on the side wall of the first piston 3, a valve core 5 is arranged on the other side wall of the first piston 3, a sealing ring 4 is arranged on the side wall of the valve core 5, guide rings 7 are arranged at two ends of the side wall of the valve core 5, the guide rings 7 play a role in supporting and guiding for the piston, a second piston 8 is arranged on the other, the air duct 12 communicates with the air inlet so that the compressed air always acts on the second piston 8.
The volume of the first piston 3 is larger than that of the second piston 8, so that the action area of the air source acting on the second piston 8 is smaller than that of the air source acting on the first piston 3, when the air inlet 11 of the control end has a pressure signal, the valve core 5 can overcome the action force of the second piston 8 to move rightwards, if the control air pressure acting on the left end of the valve core 5 disappears, the valve core 5 can move leftwards under the action of the second piston 8, the first U-shaped sealing ring 2 is mutually attached to the first piston 3, the second U-shaped sealing ring 9 is mutually attached to the second piston 8, one end of the air passage 12 penetrates through the inner side wall of the reset end cover 10, so that the action surface of the second piston 8 can be subjected to thrust, and an arrow 13 is arranged at the joint of the sealing ring 4 and the inner side wall of the valve body 6.
The working principle is as follows: the traditional single pneumatic control reversing valve is shown in figure 3: the air source enters the valve body 6 from the control end air inlet 11 and acts on the valve core 5, the valve core 5 can be jacked to the position shown in the figure by compressed air, at the moment, the port P is communicated with the port A, the port B is communicated with the port S, the port P is a main air inlet of the valve and is communicated with the air source all the time, the air passage 12 is communicated with the air inlet so that the compressed air acts on the second piston 8 all the time, because the acting area of the air source acting on the second piston 8 is smaller than that of the air source acting on the valve core 5, the valve core 5 can move to the right against the acting force of the second piston 8 when the control end air inlet 11 has a pressure signal, if the control air pressure acting on the left end of the valve core 5 disappears, the valve core 5 can move to the left, the port P is communicated with the port B after the valve core 5 moves to the left, the port A is communicated with the port R, the air source enters and pushes the valve core 5 to move, then, because the air pressure acting on the valve core 5 does not disappear, the valve core 5 is kept motionless for a short time, the valve core 5 is reset by the second piston 8 after the air pressure leaks from the arrow 13 direction gradually, and because of the uncontrollable leakage, the air must be continuously supplied to the control end air inlet 11 if the valve core 5 is kept motionless.
The single pneumatic control reversing valve is shown in figure 1: increase first U type sealing washer 2 and first piston 3 in control end cover 1, the action of first piston 3 of air supply pulse control signal control, the action of first piston 3 second control case 5, make case 5 locate the position of figure 2, because first U type sealing washer 2 is that the single action is sealed and sealed effect is higher than sealing washer 4 far away, consequently can not take place to leak after the switching-over of pulse control signal control case 5, only after releasing the atmospheric pressure initiative that will act on first piston 3, case 5 just can be automatic re-setting under the effect of second piston 8, case 5 locates the position of figure 1 after reseing.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. A single pneumatic reversing valve comprises a valve body (6), and is characterized in that: a control end cover (1) is arranged on one side of the valve body (6), a reset end cover (10) is arranged on the other side of the valve body (6), a control end air inlet (11) penetrates through the side wall of the control end cover (1), a first piston (3) is arranged on the inner side wall of the control end cover (1) and on one side of the control end air inlet (11), a first U-shaped sealing ring (2) is arranged on the side wall of the first piston (3), the other side wall of the first piston (3) is provided with a valve core (5), the side wall of the valve core (5) is provided with a sealing ring (4), two ends of the side wall of the valve core (5) are provided with guide rings (7), the other side wall of the valve core (5) is provided with a second piston (8), a second U-shaped sealing ring (9) is arranged on the side wall of the second piston (8), an air channel (12) is arranged on the inner side wall of the valve body (6) and on one side of the valve core (5).
2. A single pneumatically controlled reversing valve according to claim 1, wherein: the side wall of the valve body (6) is provided with a port P, a port A, a port B, a port R and a port S in a penetrating way.
3. A single pneumatically controlled reversing valve according to claim 1, wherein: the volume of the first piston (3) is larger than the volume of the second piston (8).
4. A single pneumatically controlled reversing valve according to claim 1, wherein: the first U-shaped sealing ring (2) is attached to the first piston (3) mutually.
5. A single pneumatically controlled reversing valve according to claim 1, wherein: and the second U-shaped sealing ring (9) is attached to the second piston (8).
6. A single pneumatically controlled reversing valve according to claim 1, wherein: one end of the air channel (12) penetrates through the inner side wall of the reset end cover (10).
7. A single pneumatically controlled reversing valve according to claim 1, wherein: an arrow (13) is arranged at the joint of the sealing ring (4) and the inner side wall of the valve body (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022178115.3U CN213512216U (en) | 2020-09-28 | 2020-09-28 | Single pneumatic control reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022178115.3U CN213512216U (en) | 2020-09-28 | 2020-09-28 | Single pneumatic control reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213512216U true CN213512216U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022178115.3U Active CN213512216U (en) | 2020-09-28 | 2020-09-28 | Single pneumatic control reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213512216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
-
2020
- 2020-09-28 CN CN202022178115.3U patent/CN213512216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
| CN114321439B (en) * | 2021-12-29 | 2023-10-03 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
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Address after: 212113 Shima, Gaozi Town, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu Jianglin Technology Co.,Ltd. Address before: 212113 Shima, Gaozi Town, Dantu District, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU JIANGLIN MACHINERY Co.,Ltd. |