CN220727190U - Switching valve based on compressed air - Google Patents

Abstract

The utility model discloses a switching valve based on compressed air, which comprises a shell and a valve core, wherein the shell is provided with a cavity, an air pressure port, an air inlet, a first air outlet and a second air outlet, the air pressure port, the air inlet, the first air outlet and the second air outlet are communicated with the cavity, the air pressure port is suitable for introducing compressed air into the cavity, the first air outlet and the second air outlet are arranged at intervals along a first direction, the air inlet and the first air outlet and the second air outlet are arranged at intervals along a second direction, the second direction is orthogonal to the first direction, the valve core is arranged in the cavity and extends along the first direction, the compressed air introduced into the cavity by the air pressure port can drive the valve core to move in the first direction relative to the shell in the cavity, the valve core is provided with a first position and a second position, when the valve core is positioned at the first position, the air inlet is communicated with the first air outlet, and when the valve core is positioned at the second position, the air inlet is communicated with the second air outlet. The switching valve based on the compressed air can realize automatic switching of the air path.

Description

Switching valve based on compressed air

Technical Field

The utility model relates to the technical field of switching valves, in particular to a switching valve based on compressed air.

Background

The switching valve is a pneumatic switching valve arranged at the hot end of the switching heat exchanger (or cold accumulator).

In the related art, a switching valve for switching the air passage is an electromagnetic valve, the air passage switching is realized through an electrified coil or manual operation, and automatic switching cannot be realized based on air pressure.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the utility model provides a switching valve based on compressed air, which can realize automatic switching of air paths.

The switching valve based on compressed air of the embodiment of the utility model comprises:

the shell is provided with a cavity, an air pressure port, an air inlet, a first air outlet and a second air outlet, wherein the air pressure port, the air inlet, the first air outlet and the second air outlet are communicated with the cavity, the air pressure port is suitable for introducing compressed air into the cavity, the first air outlet and the second air outlet are arranged at intervals along a first direction, the air inlet, the first air outlet and the second air outlet are arranged at intervals along a second direction, and the second direction is orthogonal to the first direction;

the valve core is arranged in the cavity and extends along the first direction, compressed air in the cavity is introduced into the air pressure port to drive the valve core to move along the first direction relative to the shell in the cavity, the valve core is provided with a first position and a second position, when the valve core is positioned at the first position, the air inlet is communicated with the first air outlet, and when the valve core is positioned at the second position, the air inlet is communicated with the second air outlet.

According to the switching valve based on the compressed air, disclosed by the embodiment of the utility model, the valve core moves between the first position and the second position in the cavity by controlling the air pressure of the compressed air introduced into the cavity, so that the automatic switching of the air path is realized.

In some embodiments, the compressed air-based switching valve further includes an elastic member disposed within the chamber, the elastic member and the pneumatic port being spaced apart along the first direction, the valve spool being located between the pneumatic port and the elastic member.

In some embodiments, the resilient member is a spring, the resilient member extending in the first direction.

In some embodiments, the valve cartridge includes a body having a first chamber and a second chamber spaced apart along the first direction and extending along the second direction,

when the valve core is positioned at the first position, the air inlet, the first cavity and the first air outlet are communicated, and when the valve core is positioned at the second position, the air inlet, the second cavity and the second air outlet are communicated.

In some embodiments, the valve cartridge further comprises seals disposed around a circumference of the body, the seals being three, the three seals being spaced apart along the first direction, the seals alternating with the first and second chambers.

In some embodiments, the inner wall surface of the seal is in contact with the outer wall surface of the body and the outer wall surface of the seal is in contact with the inner wall surface of the chamber.

In some embodiments, the body is cylindrical.

In some embodiments, when the air pressure of the compressed air in the air pressure port is high, the air pressure pushes the body to move towards the direction of the elastic piece so that the body is positioned at the second position, the second chamber is communicated with the air inlet and the second air outlet,

when the air pressure of the compressed air in the air pressure port is smaller, the elastic piece pushes the body to move towards the direction of the air pressure port, so that the body is located at the first position, and the first cavity is communicated with the air inlet and the first air outlet.

In some embodiments, the air inlet is located between the first air outlet and the second air outlet, and the air inlet, the first air outlet, and the second air outlet extend in the second direction, the air pressure port extending in the first direction.

In some embodiments, the air pressure port, the air inlet, the first air outlet, and the second air outlet are the same size as the interface.

Drawings

Fig. 1 is a schematic view of a compressed air-based switching valve according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a housing of a compressed air based switching valve according to an embodiment of the present utility model.

Fig. 3 is a schematic view of a spool of a compressed air based switching valve according to an embodiment of the present utility model.

Reference numerals: 1. a housing; 11. a chamber; 12. an air pressure port; 13. an air inlet; 14. a first air outlet; 15. a second air outlet; 2. a valve core; 21. a body; 211. a first chamber; 212. a second chamber; 22. a seal; 3. an elastic member.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 to 3, the compressed air-based switching valve of the embodiment of the present utility model includes a housing 1 and a valve body 2. The casing 1 has a chamber 11, an air pressure port 12, an air inlet 13, a first air outlet 14 and a second air outlet 15, the air pressure port 12, the air inlet 13, the first air outlet 14 and the second air outlet 15 are communicated with the chamber 11, the air pressure port 12 is suitable for introducing compressed air into the chamber 11, the first air outlet 14 and the second air outlet 15 are arranged at intervals along a first direction (left-right direction as shown in fig. 1), the air inlet 13 and the first air outlet 14 and the second air outlet 15 are arranged at intervals along a second direction, and the second direction is orthogonal to the first direction.

Specifically, the housing 1 extends in the first direction, and the chamber 11 also extends in the first direction. The air pressure port 12 is located at the left end of the housing 1.

The valve core 2 is arranged in the chamber 11 and extends along the first direction, compressed air introduced into the chamber 11 through the air pressure port 12 can drive the valve core 2 to move along the first direction relative to the housing 1 in the chamber 11, the valve core 2 has a first position and a second position, when the valve core 2 is positioned at the first position, the air inlet 13 is communicated with the first air outlet 14, and when the valve core 2 is positioned at the second position, the air inlet 13 is communicated with the second air outlet 15. Specifically, the left end of the valve spool 2 is disposed opposite to the air pressure port 12 so that compressed air introduced into the chamber 11 through the air pressure port 12 can push the valve spool 2 to move in the left-right direction.

According to the switching valve based on the compressed air, the valve core 2 moves between the first position and the second position in the cavity 11 by controlling the air pressure of the compressed air which is introduced into the cavity 11, so that the automatic switching of an air path is realized.

In some embodiments, the compressed air-based switching valve further includes an elastic member 3, the elastic member 3 is disposed in the chamber 11, the elastic member 3 is spaced from the air pressure port 12 along the first direction, and the valve core 2 is located between the air pressure port 12 and the elastic member 3.

Specifically, the elastic member 3 is located at the chamber 11 and at the right end of the valve spool 2, and the compressed air can drive the valve spool 2 to move in the left-right direction with respect to the housing 1. When the air pressure of the compressed air is large, the compressed air can drive the valve core 2 to move rightwards, the elastic piece 3 compresses and generates elastic force, and when the air pressure of the compressed air is small and smaller than the elastic force, the elastic force can drive the valve core 2 to move leftwards, so that the valve body can be automatically switched between a first position and a second position through the arrangement of the elastic piece 3.

In some embodiments, the elastic member 3 is a spring, and the elastic member 3 extends in the first direction. In particular, the elastic member 3 has a simple structure, and saves cost.

In some embodiments, the right end of the elastic member 3 is connected to the right end surface of the chamber 11, the left end of the elastic member 3 is connected to the left end surface of the valve core 2, and/or the right end of the elastic member 3 is connected to the right end surface of the chamber 11, the left end of the elastic member 3 is in contact with the left end surface of the valve core 2, and/or the right end of the elastic member 3 is in contact with the right end surface of the chamber 11, and the left end of the elastic member 3 is connected to the left end surface of the valve core 2.

In some embodiments, the valve cartridge 2 includes a body 21, the body 21 having a first chamber 211 and a second chamber 212, the first chamber 211 and the second chamber 212 being spaced apart along a first direction and extending along a second direction. Specifically, the first chamber 211 and the second chamber 212 penetrate the body 21 in the second direction. The valve core 2 has simple structure, easy manufacture and cost saving.

When the valve core 2 is positioned at the first position, the air inlet 13, the first chamber 211 and the first air outlet 14 are communicated, and when the valve core 2 is positioned at the second position, the air inlet 13, the second chamber 212 and the second air outlet 15 are communicated. Specifically, when the body 21 is in the first position, the elastic member 3 is in an extended state. When the body 21 is in the second position, the elastic member 3 is in a compressed state.

In some embodiments, the valve cartridge 2 further includes seals 22, the seals 22 being disposed around the circumference of the body 21, the seals 22 being three, the three seals 22 being spaced apart along the first direction, the seals 22 being alternately disposed with the first and second chambers 211, 212.

Specifically, three seals 22 are arranged at intervals in the left-right direction on the outer wall surface of the body 21, a first chamber 211 is located between the middle seal 22 and the left seal 22, and a second chamber 212 is located between the middle seal 22 and the right seal 22. The seal 22 is provided so that the gas in the first chamber 211 and the second chamber 212 is less likely to overflow from the inner wall surfaces of the body 21 and the chamber 11.

In some embodiments, the inner wall surface of the seal 22 is in contact with the outer wall surface of the body 21, and the outer wall surface of the seal 22 is in contact with the inner wall surface of the chamber 11, so that the gas flowing into the first chamber 211 and the second chamber 212 is not likely to overflow into the chamber 11.

In some embodiments, the body 21 is cylindrical.

Specifically, the body 21 has a cylindrical shape such that a frictional force between the body 21 and the inner wall surface of the chamber 11 is small when the body 21 moves in the chamber 11, thereby making it easier for the body 21 to move in the chamber 11 under the action of compressed air and elastic force. Further, the body 21 has a cylindrical shape, so that the contact effect between the inner wall surface of the seal 22 and the outer wall surface of the body 21 is better.

In some embodiments, when the air pressure of the compressed air in the air pressure port 12 is greater, the air pressure pushes the body 21 to move toward the elastic member 3, so that the body 21 is located at the second position, and the second chamber 212 is in communication with the air inlet 13 and the second air outlet 15. Specifically, when the air pressure of the compressed air in the air pressure port 12 is larger and larger than the elastic force generated by the elastic member 3, the compressed air can push the body 21 to move rightward, and the elastic member 3 is extruded and generates elastic force.

When the air pressure of the compressed air in the air pressure port 12 is small, the elastic member 3 pushes the body 21 to move toward the air pressure port 12 so that the body 21 is located at the first position, and the first chamber 211 communicates with the air inlet 13 and the first air outlet 14.

Specifically, when the air pressure of the compressed air introduced through the air pressure port 12 is smaller and smaller than the elastic force generated by the elastic member 3, the elastic member 3 is restored from the compressed state, and the elastic member 3 applies a leftward force to the body 21, so that the body 21 moves leftward, and the first chamber 211 is communicated with the air inlet 13 and the first air outlet 14, thereby switching of the air path can be controlled by the air pressure of the compressed air in the air pressure port 12.

In some embodiments, the air inlet 13 is located between the first air outlet 14 and the second air outlet 15, and the air inlet 13, the first air outlet 14, and the second air outlet 15 extend in the second direction, and the air pressure port 12 extends in the first direction.

Specifically, the air inlet 13 is located between the first air outlet 14 and the second air outlet 15, so that the air path can be switched without excessively large moving amplitude of the body 21 in the chamber 11. The air pressure port 12 extends in the first direction so that the compressed air introduced into the chamber 11 through the air pressure port 12 can better control the body 21 to move in the left-right direction.

In some embodiments, the air pressure port 12, the air inlet 13, the first air outlet 14 and the second air outlet 15 have the same interface size, so that the air pressure port 12, the air inlet 13, the first air outlet 14 and the second air outlet 15 are convenient and efficient to manufacture.

Specifically, the interface size of the air pressure port 12, the air inlet 13, the first air outlet 14 and the second air outlet 15 is 1/4NPT.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a 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 at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (9)

1. A compressed air-based switching valve, comprising:

a housing (1), the housing (1) having a chamber (11), an air pressure port (12), an air inlet (13), a first air outlet (14) and a second air outlet (15), the air pressure port (12), the air inlet (13), the first air outlet (14) and the second air outlet (15) being in communication with the chamber (11), the air pressure port (12) being adapted to introduce compressed air into the chamber (11), the first air outlet (14) and the second air outlet (15) being arranged at intervals along a first direction, the air inlet (13) being arranged at intervals along a second direction with the first air outlet (14) and the second air outlet (15), the second direction being orthogonal to the first direction;

the valve core (2) is arranged in the cavity (11) and extends along the first direction, compressed air introduced into the cavity (11) through the air pressure port (12) can drive the valve core (2) to move in the first direction relative to the shell (1) in the cavity (11), the valve core (2) has a first position and a second position, when the valve core (2) is positioned at the first position, the air inlet (13) is communicated with the first air outlet (14), and when the valve core (2) is positioned at the second position, the air inlet (13) is communicated with the second air outlet (15);

still include elastic component (3), elastic component (3) are established in cavity (11), elastic component (3) with atmospheric pressure mouth (12) are followed first direction interval arrangement, case (2) are located atmospheric pressure mouth (12) with elastic component (3) between.

2. Compressed air-based switching valve according to claim 1, characterized in that the elastic member (3) is a spring, the elastic member (3) extending in the first direction.

3. The compressed air-based switching valve according to claim 1, wherein the valve spool (2) comprises a body (21), the body (21) having a first chamber (211) and a second chamber (212), the first chamber (211) and the second chamber (212) being spaced apart along the first direction and extending along the second direction,

when the valve core (2) is located at the first position, the air inlet (13), the first chamber (211) and the first air outlet (14) are communicated, and when the valve core (2) is located at the second position, the air inlet (13), the second chamber (212) and the second air outlet (15) are communicated.

4. A compressed air based switching valve according to claim 3, wherein the valve cartridge (2) further comprises seals (22), the seals (22) being arranged around the circumference of the body (21), the seals (22) being three, the three seals (22) being arranged at intervals along the first direction, the seals (22) and the first and second chambers (211, 212) being alternately arranged.

5. The compressed air-based switching valve according to claim 4, wherein an inner wall surface of the seal (22) is in contact with an outer wall surface of the body (21), and an outer wall surface of the seal (22) is in contact with an inner wall surface of the chamber (11).

6. A compressed air based switching valve according to claim 3, characterized in that the body (21) is cylindrical.

7. A compressed air-based switching valve according to claim 3, wherein when the air pressure of the compressed air in the air pressure port (12) is large, the air pressure pushes the body (21) to move toward the elastic member (3) so that the body (21) is located at the second position, the second chamber (212) communicates with the air inlet port (13) and the second air outlet port (15),

when the air pressure of the compressed air in the air pressure port (12) is smaller, the elastic piece (3) pushes the body (21) to move towards the direction of the air pressure port (12), so that the body (21) is located at the first position, and the first cavity (211) is communicated with the air inlet (13) and the first air outlet (14).

8. The compressed air-based switching valve according to claim 1, wherein the air inlet (13) is located between the first air outlet (14) and the second air outlet (15), and the air inlet (13), the first air outlet (14) and the second air outlet (15) extend in the second direction, the air pressure port (12) extending in the first direction.

9. The compressed air-based switching valve according to claim 1, wherein the air pressure port (12), the air inlet port (13), the first air outlet port (14) and the second air outlet port (15) are of the same interface size.