CN211449246U - Reversing valve - Google Patents
Reversing valve Download PDFInfo
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- CN211449246U CN211449246U CN201921927042.4U CN201921927042U CN211449246U CN 211449246 U CN211449246 U CN 211449246U CN 201921927042 U CN201921927042 U CN 201921927042U CN 211449246 U CN211449246 U CN 211449246U
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Abstract
The utility model discloses a reversing valve, which comprises a valve body component, a valve core and a valve core axial movement driving mechanism, wherein the valve body component is provided with a valve cavity, the valve cavity is provided with a plurality of channels in parallel along the axial direction, and the valve body component is provided with a port communicated with the corresponding channel; the valve core is movably arranged in the valve cavity along the axial direction, and the valve core is provided with a plurality of valve clacks which are in contact fit with the wall surface of the valve cavity along the axial direction in parallel so as to seal and separate at least one passage between two adjacent valve clacks and the rest passages outside the two adjacent valve clacks when the valve core moves in place in the valve cavity; the valve core axial movement driving mechanism is connected with the valve core so as to drive the valve core to move to a corresponding position in the valve cavity through the valve core axial movement driving mechanism. The flow direction of the working fluid is changed periodically, and the flow rate is larger under the same pressure difference.
Description
Technical Field
The utility model relates to a reversing valve.
Background
At present, a reversing valve is a directional control valve with more than two flow forms and more than two fluid inlets and outlets, is provided with a multi-directional adjustable channel, can change the flow direction of fluid timely, is a valve for realizing communication, cutting off and reversing of fluid, pressure unloading and sequential action control, and can be divided into a manual reversing valve and an electromagnetic reversing valve. When the valve core is driven by external force to move, different fluid inlets and outlets are connected or disconnected, so that working fluid flows from one group of inlets and outlets and from the other group of inlets and outlets, and the purpose of periodically changing the flow direction is achieved. The two-position five-way reversing valve is an automatic control element for controlling fluid and is not limited to hydraulic or pneumatic control. The existing manual two-position five-way reversing valve mostly adopts a small-size integrated reversing valve and has the defects of small flow, complex structure, high processing difficulty and short service life.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a switching-over valve, it has not only realized the purpose of working fluid's cycle transform flow direction well, and the flow is great under the equal pressure differential moreover.
The utility model provides a technical scheme that above-mentioned technical problem took is: a reversing valve, comprising:
the valve body assembly is provided with a valve cavity, a plurality of channels are arranged in parallel along the axial direction of the valve cavity, and the valve body assembly is provided with ports communicated with the corresponding channels;
the valve core is movably arranged in the valve cavity along the axial direction, and the valve core is provided with a plurality of valve clacks which are in contact fit with the wall surface of the valve cavity along the axial direction in parallel so as to seal and separate at least one passage between two adjacent valve clacks and other passages outside the two adjacent valve clacks when the valve core moves in place in the valve cavity;
the valve core axial movement driving mechanism is connected with the valve core so as to drive the valve core to move to a corresponding position in the valve cavity through the valve core axial movement driving mechanism.
Further, the valve core axial movement driving mechanism comprises a positive direction driving mechanism and a negative direction resetting mechanism which are respectively connected with the valve core and interact with each other to enable the valve core to move axially; wherein the content of the first and second substances,
the positive direction driving mechanism is suitable for being acted to overcome the acting force of the negative direction resetting mechanism so as to drive the valve core to move towards the positive direction in the axial direction;
the reverse direction resetting mechanism is suitable for driving the valve core to axially move in a reverse direction.
Further, the positive direction drive mechanism includes:
the swing rod is hinged on the valve body assembly;
and the ball body is connected in the valve body assembly in a rolling manner and is respectively contacted with the action part of the swing rod and the upper end of the valve core.
Further, the action part of pendulum rod is a contact, the contact includes intrados, back cambered surface and links up the fillet portion of intrados and back cambered surface.
Further, the valve body assembly comprises a valve body and a supporting piece connected to the upper end of the valve body, and the supporting piece is provided with a supporting cavity matched with the size of the ball body and supporting the ball body.
Furthermore, the reverse direction driving mechanism comprises an elastic element of which the upper end part acts on the lower end of the valve core and the lower end part is connected with or abutted against the valve body component.
Furthermore, the valve body assembly comprises a valve body and a plug connected to the lower end part of the valve body, and the lower end part of the elastic element is arranged in the plug.
Furthermore, the number of the channels is 4, and the channels are a first channel, a second channel, a third channel and a fourth channel from top to bottom in sequence;
furthermore, the number of the valve clacks is 4, and the valve clacks are a first valve clack, a second valve clack, a third valve clack and a fourth valve clack from top to bottom in sequence;
the corresponding positions of the valve core in the valve cavity comprise a pressing position and a releasing position; wherein the content of the first and second substances,
when the valve spool is in the depressed position, the first passage is between the first and second lobes, the second and third passages are in communication and are both between the second and third lobes, and the fourth passage is between the third and fourth lobes;
when the valve core is at the release position, the first channel is communicated with the second channel and respectively positioned between the second valve clack and the third valve clack, and the third channel is communicated with the fourth channel and respectively positioned between the third valve clack and the fourth valve clack.
In order to further store lubricating oil in the sealing ring and overcome the defect of short service life caused by long-term opening and closing and taking away of the lubricating oil through gas flow, the valve flap is provided with the sealing ring at the part contacted with the wall surface of the valve cavity; wherein the content of the first and second substances,
the sealing rings on the second valve clack and the third valve clack are star-shaped sealing rings.
Further, the outer wall of the valve body assembly is provided with outer sealing rings at two sides of the air ports in the axial direction so as to seal and separate the adjacent air ports.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
1. the ball body is shifted by the contact at the lower end of the swing rod, and the valve core moves axially under the action of circumferential unloading of the ball body and the guiding action of the valve body, so that the relative position of the valve clack on the valve core and the channel is changed, the air ports are connected or separated, the reversing control of the flow path is realized, and the flow is larger under the same pressure difference.
2. The utility model discloses establish the components of a whole that can function independently setting of valve body, end cap and support piece with the valve body subassembly, can pass through threaded connection between them, greatly reduced the processing degree of difficulty.
3. The valve core is characterized in that two sealing rings and two star-shaped sealing rings are arranged on the valve clack of the valve core, lubricating oil can be stored in grooves in the star-shaped sealing rings, the defect that the service life is short due to the fact that the lubricating oil is taken away by long-term opening and closing and gas flowing can be overcome, and the valve core is used for improving the sealing performance of the valve during reversing.
4. The valve core is in point contact with the ball body, the ball body and the upper end of the valve core are in rolling friction, so that the service life of the reversing valve is prolonged, the diameter of the ball body can be 10mm, the stroke of the valve core is larger, the gap of a reversing flow path between the valve core and the valve body is also larger, and the processing difficulty of the valve core is also greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of the reversing valve of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1, a reversing valve comprises:
the valve body assembly is provided with a valve cavity, four channels are arranged in parallel along the axial direction of the valve cavity, and the valve body assembly is provided with ports communicated with the corresponding channels; in the present embodiment, the number of the channels is not limited to four;
the valve core 12 is movably arranged in the valve cavity along the axial direction, and the valve core is provided with a plurality of valve clacks which are in contact fit with the wall surface of the valve cavity along the axial direction in parallel so as to seal and separate at least one passage between two adjacent valve clacks and other passages outside the two adjacent valve clacks when the valve core 12 moves in place in the valve cavity;
and the valve core axial movement driving mechanism is connected with the valve core 12 and drives the valve core 12 to move to a corresponding position in the valve cavity through the valve core axial movement driving mechanism.
Specifically, as shown in fig. 1, the valve element axial movement driving mechanism includes a positive direction driving mechanism and a negative direction returning mechanism which are respectively connected with the valve element 12 and interact with each other to axially move the valve element 12; wherein the content of the first and second substances,
the positive direction drive mechanism is adapted to be actuated to overcome the force of the negative direction return mechanism to drive the spool 12 in the axial direction to move in the positive direction;
the reverse direction resetting mechanism is suitable for driving the valve core 12 to move in the reverse direction in the axial direction.
Specifically, as shown in fig. 1, the positive direction drive mechanism includes:
the swing rod 1 is hinged to the valve body assembly through a pin 2;
and the ball body 3 is connected in the valve body assembly in a rolling manner and is respectively contacted with the action part of the swing rod 1 and the upper end of the valve core 12.
Specifically, as shown in fig. 1, the action portion of the swing link 1 is a contact, and the contact includes an intrados 1a, a dorsal camber 1b, and a fillet 1c connecting the intrados 1a and the dorsal camber 1 b.
As shown in fig. 1, the valve body assembly includes a valve body 6 and a support member 4 connected to an upper end of the valve body 6, and the support member 4 is provided with a support chamber adapted to the size of the ball 3 and supporting the ball 3.
In addition, a set screw 5 is provided on the support 4.
As shown in fig. 1, the reverse direction driving mechanism includes an elastic element 15 having an upper end portion acting on a lower end of the valve element 12 and a lower end portion connected to or abutted against the valve body assembly. In the present embodiment, the elastic member 15 is a spring.
As shown in fig. 1, the valve body assembly includes a valve body 6 and a plug 16 connected to a lower end portion of the valve body 6, and a lower end portion of the elastic member 15 is disposed in the plug 16.
In this embodiment, the valve body assembly is provided as a split arrangement of the valve body 6, the plug 16 and the support member 4, and they can be connected by screw threads, which greatly reduces the processing difficulty.
As shown in fig. 1, there are 4 channels, which are a first channel, a second channel, a third channel and a fourth channel from top to bottom; in this embodiment, the gas ports corresponding to the first channel, the second channel, the third channel and the fourth channel are a first gas port 8, a second gas port 11, a third gas port 13 and a fourth gas port 14, respectively.
The number of the valve clacks is 4, and the valve clacks are a first valve clack, a second valve clack, a third valve clack and a fourth valve clack from top to bottom in sequence;
the respective positions of the spool 12 within the valve chamber include a depressed position and a released position; wherein the content of the first and second substances,
when the valve spool 12 is in the depressed position, the first passage is between the first and second lobes, the second and third passages are in communication and are both between the second and third lobes, and the fourth passage is between the third and fourth lobes;
when the valve core 12 is at the release position, the first passage and the second passage are communicated and are respectively positioned between the second valve clack and the third valve clack, and the third passage and the fourth passage are communicated and are respectively positioned between the third valve clack and the fourth valve clack.
Specifically, as shown in fig. 1, a sealing ring is arranged at a position where the valve flap contacts with the wall surface of the valve cavity; wherein the content of the first and second substances,
the sealing rings on the second valve clack and the third valve clack can be star-shaped sealing rings 9;
the sealing rings on the first and fourth valve flaps may be O-ring seals 7.
Two O-shaped sealing rings 7 and two star-shaped sealing rings 9 are arranged on the valve clack of the valve core 12, lubricating oil can be stored in grooves in the star-shaped sealing rings 9, the defect that the service life is short due to long-term opening and closing and the fact that the lubricating oil is taken away by gas flow can be overcome, and the valve sealing performance during reversing is improved.
As shown in FIG. 1, the outer wall of the valve body assembly is provided with outer seal rings 10 on both sides of the ports in the axial direction to seal off adjacent ports.
As shown in fig. 1, two sides of the contact are stop end surfaces 1d which are connected with the inner arc surface 1a or the back arc surface 1b and are provided with chamfers.
As shown in fig. 1, the upper end of the valve element 12 is in point contact with the ball.
The valve core 12 is in point contact with the ball 3, the ball 3 and the upper end of the valve core 12 form rolling friction, so that the service life of the reversing valve is prolonged, the diameter of the ball 3 can be 10mm, the stroke of the valve core 12 is larger, the gap of a reversing flow path between the valve core 12 and the valve body 6 is also larger, and the processing difficulty of the valve core 12 is also greatly reduced.
In the embodiment, the pin 2 is used as a rotating shaft of the oscillating bar 1, so that when the oscillating bar 1 is toggled to perform a reversing action, a push-pull force is generated on the oscillating bar 1, and the oscillating bar 1 overcomes a friction moment between the oscillating bar 1 and the ball 3 and a spring force generated by compressing the spring, thereby driving the valve core 12 to axially move. When the valve core 12 is pressed down by the swing rod 1, namely the valve core 12 is in a pressing position, the O-shaped sealing ring 7 and the star-shaped sealing ring 9 are matched with the valve cavity of the valve body 6 to achieve a sealing effect, and the second air port 11 is communicated with the third air port 13; conversely, the direction valve is closed, the first port 8 is connected to the second port 11, and the third port 13 is connected to the fourth port 14.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements 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.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
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 the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A reversing valve, comprising:
the valve body assembly is provided with a valve cavity, a plurality of channels are arranged in parallel along the axial direction of the valve cavity, and the valve body assembly is provided with ports communicated with the corresponding channels;
the valve core (12) is movably arranged in the valve cavity along the axial direction, and the valve core is provided with a plurality of valve clacks which are in contact fit with the wall surface of the valve cavity along the axial direction in parallel so as to seal and separate at least one passage between two adjacent valve clacks and other passages outside the two adjacent valve clacks when the valve core (12) moves in place in the valve cavity;
the valve core axial movement driving mechanism is connected with the valve core (12) so as to drive the valve core (12) to move to a corresponding position in the valve cavity through the valve core axial movement driving mechanism.
2. The reversing valve of claim 1,
the valve core axial movement driving mechanism comprises a positive direction driving mechanism and a negative direction resetting mechanism which are respectively connected with the valve core (12) and interact with each other to enable the valve core (12) to move axially; wherein the content of the first and second substances,
the positive direction driving mechanism is suitable for being acted to overcome the acting force of the negative direction resetting mechanism so as to drive the valve core (12) to move towards the positive direction in the axial direction;
the reverse direction resetting mechanism is suitable for driving the valve core (12) to move in the reverse direction in the axial direction.
3. The reversing valve of claim 2,
the positive direction drive mechanism includes:
the swing rod (1) is hinged to the valve body assembly;
and the ball body (3) is connected in the valve body assembly in a rolling manner and is respectively contacted with the action part of the swing rod (1) and the upper end of the valve core (12).
4. The reversing valve of claim 3,
the action part of the swing rod (1) is a contact, and the contact comprises an inner arc surface (1 a), a back arc surface (1 b) and a fillet part (1 c) connected with the inner arc surface (1 a) and the back arc surface (1 b).
5. The reversing valve of claim 3,
the valve body assembly comprises a valve body (6) and a supporting piece (4) connected to the upper end of the valve body (6), wherein the supporting piece (4) is provided with a supporting cavity matched with the size of the ball body (3) and supporting the ball body (3).
6. The reversing valve of claim 2,
the reverse direction driving mechanism comprises an elastic element (15) of which the upper end part acts on the lower end of the valve core (12) and the lower end part is connected with or propped against the valve body component.
7. The reversing valve of claim 6,
the valve body assembly comprises a valve body (6) and a plug (16) connected to the lower end part of the valve body (6), and the lower end part of the elastic element (15) is arranged in the plug (16).
8. The reversing valve of claim 1,
the number of the channels is 4, and the channels are a first channel, a second channel, a third channel and a fourth channel from top to bottom in sequence;
the number of the valve clacks is 4, and the valve clacks are a first valve clack, a second valve clack, a third valve clack and a fourth valve clack from top to bottom in sequence;
the corresponding positions of the valve core (12) in the valve cavity comprise a pressing position and a releasing position; wherein the content of the first and second substances,
when the valve spool (12) is in the depressed position, the first passage is between the first and second lobes, the second and third passages are in communication and are both between the second and third lobes, and the fourth passage is between the third and fourth lobes;
when the valve core (12) is at the release position, the first channel is communicated with the second channel and respectively positioned between the second valve clack and the third valve clack, and the third channel is communicated with the fourth channel and respectively positioned between the third valve clack and the fourth valve clack.
9. The reversing valve of claim 8,
the valve clack is provided with a sealing ring at the position contacted with the wall surface of the valve cavity; wherein the content of the first and second substances,
the sealing rings on the second valve clack and the third valve clack are star-shaped sealing rings (9).
10. The reversing valve of claim 1,
and outer sealing rings (10) are arranged on the outer wall of the valve body assembly and positioned on two sides of the air ports in the axial direction to seal and separate the adjacent air ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927042.4U CN211449246U (en) | 2019-11-08 | 2019-11-08 | Reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927042.4U CN211449246U (en) | 2019-11-08 | 2019-11-08 | Reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211449246U true CN211449246U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921927042.4U Active CN211449246U (en) | 2019-11-08 | 2019-11-08 | Reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211449246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217493A (en) * | 2021-04-15 | 2021-08-06 | 浙大城市学院 | Zero-adjustable electro-hydraulic proportional valve |
-
2019
- 2019-11-08 CN CN201921927042.4U patent/CN211449246U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217493A (en) * | 2021-04-15 | 2021-08-06 | 浙大城市学院 | Zero-adjustable electro-hydraulic proportional valve |
| CN113217493B (en) * | 2021-04-15 | 2023-08-04 | 浙大城市学院 | Zero-position-adjustable electro-hydraulic proportional valve |
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