CN220891175U - One-way control valve - Google Patents
One-way control valve Download PDFInfo
- Publication number
- CN220891175U CN220891175U CN202322626618.6U CN202322626618U CN220891175U CN 220891175 U CN220891175 U CN 220891175U CN 202322626618 U CN202322626618 U CN 202322626618U CN 220891175 U CN220891175 U CN 220891175U
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- chamber
- piston
- channel
- fluid
- control valve
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- 230000006978 adaptation Effects 0.000 claims 2
- 239000012530 fluid Substances 0.000 abstract description 72
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The utility model relates to the technical field of valves, in particular to a one-way control valve which comprises a valve body, wherein a left chamber, a middle chamber and a right chamber are sequentially formed in the valve body from left to right. The left chamber is internally provided with a piston capable of moving left and right in the left chamber, the right chamber is internally provided with a valve core capable of moving left and right in the right chamber, the right side of the valve core is connected with the right side wall of the right chamber through a return spring, and the piston is connected with the valve core through a connecting rod. The first channel communicated with the outside is formed in the circumferential side wall of the middle chamber, the second channel communicated with the outside is formed in the circumferential side wall of the right part of the left chamber, and the control channel communicated with the outside is formed in the left side wall of the left chamber. The unidirectional control valve disclosed by the utility model not only can enable the fluid to flow forward and backward, but also can limit the fluid to flow backward by means of the fluid pressure. When the control channel is communicated with the outside through the second channel, the one-way control valve can not only realize forward circulation of fluid, but also stop forward flow of fluid when the pressure of the fluid flowing in the reverse direction is increased to a certain degree.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a one-way control valve.
Background
In the prior art, control valves that enable fluid such as gas or hydraulic oil to flow in only one direction are one-way valves and pilot operated one-way valves. The one-way valve can enable the fluid such as gas or hydraulic oil to flow in one direction only, but cannot enable the fluid to flow in the opposite direction; the hydraulic control one-way valve can control the pressure of fluid to realize the reverse circulation of fluid. However, when it is required to realize the forward and reverse circulation of the fluid, and the reverse circulation of the fluid can be limited by the pressure of the fluid, the two valves are not applicable any more. Therefore, the utility model discloses a one-way control valve which can enable fluid to flow in the forward and reverse directions and can limit the reverse circulation of the fluid by means of the fluid pressure.
Disclosure of Invention
The utility model aims to provide a one-way control valve which can enable fluid to flow in the forward and reverse directions and can limit the reverse circulation of the fluid by means of the fluid pressure.
In order to achieve the purpose, the utility model discloses a one-way control valve which comprises a valve body, wherein a left chamber, a right chamber and a middle chamber which is communicated with the left chamber and the right chamber are arranged in the valve body. The left chamber is internally provided with a piston which can move left and right and is matched with the left chamber, the right chamber is internally provided with a valve core which can move left and right and is matched with the right chamber, the right side of the valve core is connected with the right side wall of the right chamber through a reset spring, and the piston is connected with the valve core through a connecting rod. The first channel communicated with the outside is formed in the circumferential side wall of the middle chamber, the second channel communicated with the outside is formed in the circumferential side wall of the right part of the left chamber, and the control channel communicated with the outside is formed in the left side wall of the left chamber. The unidirectional control valve disclosed by the utility model not only can enable the fluid to flow forward and backward, but also can limit the fluid to flow backward by means of the fluid pressure.
Preferably, when the piston moves rightmost to the rightmost end, the valve core is positioned at the rightmost end, and the second channel and the middle chamber are closed by the piston; when the piston moves leftwards to the leftmost end, the valve core is positioned at the leftmost end, and the second channel is communicated with the middle chamber through the left chamber; the first passage is always communicated with the middle chamber. The on-off of the unidirectional control valve to the fluid is realized through the on-off of the fluid between the second channel and the middle chamber.
Preferably, the outer end of the control channel is connected with the second channel, that is, the control channel is communicated with the outside through the second channel. The unidirectional control valve not only can realize forward circulation of fluid, but also can enable partial fluid to flow reversely, and when the pressure of the fluid flowing reversely is increased to the far right end of the piston, the unidirectional control valve stops the forward flow of the fluid.
Preferably, the cross sections of the left chamber, the right chamber and the middle chamber are all circular and are coaxially arranged, and the outer contours of the cross sections of the piston and the valve core are all circular which are respectively matched with the left chamber and the right chamber. So that the structure is more stable.
Preferably, the radius of the middle chamber is smaller than that of the left chamber and the right chamber, so that the right end surface of the left chamber forms a right limit table of the piston and the left end surface of the right chamber forms a left limit table of the valve core. The piston and the valve core can be respectively stably positioned in the left chamber and the right chamber when moving left and right.
Preferably, the connection part of the right end face and the outer side face of the piston is chamfered or beveled to form an inclined face, and when the piston moves rightwards to the rightmost end, the inclined face abuts against the right limiting table. The structure is more reasonable, and the one-way control valve is more stable when the fluid is cut off.
Preferably, when the valve core moves to the rightmost end, a gap is reserved between the right end surface of the valve core and the right side surface of the right cavity. The clearance that leaves can ensure that the thorough butt of piston can be on right spacing bench, has further ensured the stability when the check valve cuts off the fluid.
Preferably, the right side surface of the valve core is provided with a groove coaxial with the valve core, and the left end of the return spring is fixedly connected with the left side surface of the groove. The setting of recess can ensure reset spring job stabilization nature.
In summary, the beneficial effects of the utility model are as follows: the unidirectional control valve disclosed by the utility model not only can enable the fluid to flow forward and backward, but also can limit the fluid to flow backward by means of the fluid pressure. When the control channel is communicated with the outside through the second channel, the one-way control valve can not only realize forward circulation of fluid, but also enable part of fluid to flow reversely, and when the pressure of the fluid to flow reversely is increased to enable the piston to move to the rightmost end, the one-way control valve stops forward flow of the fluid.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present utility model (with the piston at the far left end and in reverse flow communication);
Fig. 2 is a schematic structural view of a one-way control valve (piston is positioned at the rightmost end, and is in a reverse cut-off state) according to the first embodiment of the present utility model;
FIG. 3 is a schematic view of a structure of a check valve according to a second embodiment of the present utility model (the piston is located at the leftmost end, and in a reverse flow state);
FIG. 4 is a schematic view of the structure of the check valve (the piston is located at the rightmost end, and in a reverse cut-off state) according to the second embodiment of the present utility model;
1. Valve body, 2, left cavity, 3, right cavity, 4, middle cavity, 5, piston, 6, case, 7, reset spring, 8, connecting rod, 9, first passageway, 10, second passageway, 11, control channel, 12, right spacing platform, 13, left spacing platform, 14, inclined plane, 15, recess.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The following is a description of preferred embodiments of the utility model, taken in conjunction with the accompanying drawings.
First embodiment:
The utility model discloses a one-way control valve, which is shown in fig. 1 and 2, and comprises a valve body 1, wherein a left chamber 2, a right chamber 3 and a middle chamber 4 communicated with the left chamber 2 and the right chamber 3 are arranged in the valve body 1. The left chamber 2, the right chamber 3 and the middle chamber 4 are all circular in cross section and are all coaxially arranged.
The right chamber 3 is internally provided with a valve core 6 which can move left and right and is matched with the valve core, the right side of the valve core 6 is connected with the right side wall of the right chamber 3 through a return spring 7, the right side surface of the valve core 6 is provided with a groove 15 coaxial with the valve core, and the left end of the return spring 7 is fixedly connected with the left side surface of the groove 15. A piston 5 which can move left and right in the left chamber 2 and is matched with the left chamber is arranged in the left chamber, and the piston 5 and the valve core 6 are connected through a connecting rod 8. The outer contours of the cross sections of the piston 5 and the valve core 6 are round and respectively matched with the left chamber 2 and the right chamber 3.
The first channel 9 communicated with the outside is formed in the circumferential side wall of the middle chamber 4, the second channel 10 communicated with the outside is formed in the circumferential side wall of the right part of the left chamber 2, and the control channel 11 communicated with the outside is formed in the left side wall of the left chamber 2. The radius of the middle chamber 4 is smaller than that of the left chamber 2 and the right chamber 3, so that the right end surface of the left chamber 2 forms a right limit table 12 of the piston 5, and the left end surface of the right chamber 3 forms a left limit table 13 of the valve core 6.
When the piston 5 moves rightmost to the right, the valve core 6 is positioned at the rightmost end, and at the moment, the second channel 10 and the middle chamber 4 are closed by the piston 5; when the piston 5 moves leftwards to the leftmost end, the valve core 6 is positioned at the leftmost end, and the second channel 10 is communicated with the middle chamber 4 through the left chamber 2; the first passage 9 communicates all the way to the intermediate chamber 4. The connection part of the right end face and the outer side face of the piston 5 is chamfered or beveled to form an inclined face 14, and when the piston 5 moves rightwards to the rightmost end, the inclined face 14 abuts against the right limiting table 12. When the valve core 6 moves to the rightmost end, a gap is reserved between the right end surface of the valve core 6 and the right side surface of the right cavity 3.
In the present embodiment, it is set that the direction of the fluid such as the gas or the hydraulic oil flowing from the second passage 10 to the first passage 9 is the reverse direction from the rear to the front, and the direction of the fluid flowing from the first passage 9 to the second passage 10 is the forward direction from the front to the rear. The initial state of the one-way control valve disclosed by the utility model is that the piston 5 and the valve core 6 are positioned at the leftmost end.
When the fluid passes in the opposite direction, the fluid enters the second channel 10 from the outer end of the second channel 10 and then passes through the right part of the left chamber 2, the middle chamber 4 and the first channel 9 in sequence to the pipeline or other parts located in front of the one-way control valve and connected to the outer end of the first channel 9. At this time, when fluid enters from the outer end in the control channel 11, the fluid enters the left part of the left chamber 2, presses the piston 5 to move rightward, compresses the return spring 7 on the right side of the valve core 6, when the fluid entering the left part of the left chamber 2 from the control channel 11 presses the piston 5 to the rightmost end, the inclined surface 14 is abutted to the right limiting table 12, the fluid in the second channel 10 can not enter the middle chamber 4 through the left chamber 2 any more, and the unidirectional control valve interrupts the transmission of the fluid. That is, when the fluid is transferred in the opposite direction, if the fluid enters from the outer end of the control channel 11 and the fluid pressure increases to move the piston 5 to the right, the one-way control valve stops the forward transfer of the fluid.
When the fluid is transferred in the positive direction, the fluid enters the first channel 9 from the outer end of the first channel 9, and then directly enters a pipeline or other components connected with the outer end of the second channel 10 and positioned behind the one-way control valve through the middle chamber 4, the right part of the left chamber 2 and the second channel 10 in sequence.
Second embodiment:
On the basis of the first embodiment, as shown in fig. 3 and 4, the outer end of the control passage 11 is connected to the second passage 10, i.e., the control passage 11 communicates with the outside through the second passage 10.
In the present embodiment, it is set that the direction of the fluid such as the gas or the hydraulic oil flowing from the second passage 10 to the first passage 9 is the reverse direction from the rear to the front, and the direction of the fluid flowing from the first passage 9 to the second passage 10 is the forward direction from the front to the rear. The initial state of the one-way control valve disclosed by the utility model is that the piston 5 and the valve core 6 are positioned at the leftmost end.
When the fluid is transferred in the opposite direction, the fluid enters the second channel 10 from the outer end of the second channel 10, and a part of the fluid sequentially passes through the right part of the left chamber 2, the middle chamber 4 and the first channel 9 to reach a pipeline or other parts positioned in front of the one-way control valve and connected with the outer end of the first channel 9; the other part enters the left part of the left chamber 2 from the control channel 11, presses the piston 5 to move rightwards, simultaneously compresses the return spring 7 on the right side of the valve core 6, when the fluid entering the left part of the left chamber 2 from the control channel 11 presses the piston 5 to the rightmost end, the inclined surface 14 is abutted to the right limiting table 12, the fluid in the second channel 10 can not enter the middle chamber 4 through the left chamber 2 any more, and the one-way control valve interrupts the forward transmission of the fluid. That is, when the fluid is transferred in the opposite direction, a small amount of fluid or fluid with smaller pressure can enter the pipeline or other parts connected in front of the valve through the one-way control valve, and when the fluid pressure is increased to enable the piston 5 to move rightmost, the one-way control valve stops the forward transfer of the fluid.
The size of the whole one-way control valve and the size of each part can be designed and adjusted according to actual demands, so that when the fluid is transferred in the opposite direction, the fluid pressure of the fluid which needs to be blocked can move the piston 5 to the rightmost end to disconnect the one-way control valve, the fluid which does not need to be blocked can directly pass through the one-way control valve in the opposite direction, and the size of the whole one-way control valve and the size of each part are not particularly limited.
When the fluid is transferred in the forward direction, the fluid enters the first channel 9 from the outer end of the first channel 9, and then passes through the middle chamber 4, the right part of the left chamber 2 and the second channel 10 directly into a pipeline or other components connected behind the one-way control valve.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (8)
1. The utility model provides a one-way control valve, its characterized in that, including valve body (1), left cavity (2), right cavity (3) and intercommunication left cavity (2) and middle cavity (4) of right cavity (3) have been seted up in valve body (1), be equipped with in left cavity (2) can be in wherein control the removal and rather than the piston (5) of looks adaptation, be equipped with in right cavity (3) can be in wherein control the removal and with case (6) of looks adaptation, case (6) right side passes through reset spring (7) and connects the right side wall of right cavity (3), piston (5) are connected through connecting rod (8) with case (6), first passageway (9) outside the intercommunication have been seted up on middle cavity (4) circumference lateral wall, set up second passageway (10) outside the intercommunication on the circumference lateral wall on left cavity (2) right part, set up control passageway (11) outside the intercommunication on the left cavity (2) left side wall.
2. A one-way control valve according to claim 1, characterized in that when the piston (5) moves to the right to the rightmost end, the valve spool (6) is located at the rightmost end, at which time the second channel (10) and the intermediate chamber (4) are closed by the piston (5); when the piston (5) moves leftwards to the leftmost end, the valve core (6) is positioned at the leftmost end, and the second channel (10) is communicated with the middle chamber (4) through the left chamber (2); the first channel (9) is always connected with the middle chamber (4).
3. A one-way control valve according to claim 1, characterized in that the outer end of the control channel (11) is connected to the second channel (10), i.e. the control channel (11) communicates with the outside through the second channel (10).
4. The unidirectional control valve according to claim 2, characterized in that the cross sections of the left chamber (2), the right chamber (3) and the middle chamber (4) are circular and are coaxially arranged, and the outer contours of the cross sections of the piston (5) and the valve core (6) are circular which are respectively matched with the left chamber (2) and the right chamber (3).
5. The unidirectional control valve of claim 4, characterized in that the radii of the intermediate chambers (4) are smaller than the radii of the left and right chambers (2, 3) such that the right end surface of the left chamber (2) forms the right stop (12) of the piston (5) and the left end surface of the right chamber (3) forms the left stop (13) of the spool (6).
6. A one-way control valve according to claim 5, characterized in that the connection of the right end face and the outer side face of the piston (5) is chamfered or beveled to form an inclined face (14), said inclined face (14) abutting against the right stop table (12) when the piston (5) is moved to the right-most end.
7. A one-way control valve according to claim 6, characterized in that a gap is left between the right end face of the valve element (6) and the right side face of the right chamber (3) when the valve element (6) is moved to the rightmost end.
8. The unidirectional control valve according to claim 1, characterized in that the right side surface of the valve core (6) is provided with a groove (15) coaxial with the valve core, and the left end of the return spring (7) is fixedly connected with the left side surface of the groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322626618.6U CN220891175U (en) | 2023-09-27 | 2023-09-27 | One-way control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322626618.6U CN220891175U (en) | 2023-09-27 | 2023-09-27 | One-way control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891175U true CN220891175U (en) | 2024-05-03 |
Family
ID=90841557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322626618.6U Active CN220891175U (en) | 2023-09-27 | 2023-09-27 | One-way control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891175U (en) |
-
2023
- 2023-09-27 CN CN202322626618.6U patent/CN220891175U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |