WO2018058756A1

WO2018058756A1 - Switchover valve

Info

Publication number: WO2018058756A1
Application number: PCT/CN2016/105757
Authority: WO
Inventors: 罗凤玲
Original assignee: 惠州科赛医疗有限公司
Priority date: 2016-09-27
Filing date: 2016-11-14
Publication date: 2018-04-05
Also published as: CN107869600A

Abstract

A switchover valve, comprising valve body (10) and a valve core structure (11); the valve body is provided with a first inlet channel (1011), a second inlet channel (1012), at least one outlet channel (1021) and an accommodating space (1013); the accommodating space is located among the first inlet channel, the second inlet channel and the at least one outlet channel and is communicated with the first inlet channel, the second inlet channel and the at least one outlet channel; the valve core structure is provided in the accommodating space and comprises a first valve core (111) and a second valve core (112); the first valve core corresponds to the first inlet channel, and the second valve core corresponds to the second inlet channel. The switchover valve can shorten the shift motion of valve cores by means of a valve core structure, and promotes the switching efficiency of the switchover valve.

Description

Switching valve

Technical field

The invention relates to the technical field of valves, and in particular to a switching valve.

Background technique

Please refer to FIG. 19, which is a cross-sectional view of a general switching valve 1'. As shown, a general switching valve 1' has a valve body 10' and a single valve body 11'. The valve body 10' has a first inlet passage 101'. The second inlet passage 102', the outlet passage 103', and the accommodating space 104' between the first inlet passage 101', the second inlet passage 102' and the outlet passage 103', and the single spool 11' is disposed in the accommodating space Within 104'. When fluid enters from the first inlet passage 101', the fluid pushes the single spool 11' and the single spool 11' closes the second inlet passage 102'. When the fluid is switched into the second inlet passage 102', the single spool 11' is to be pushed by the fluid and moved from the end close to the accommodating space 104' of the second inlet passage 102' to the capacity close to the first inlet passage 101'. At one end of the space 104', the spool 11' switching stroke is too long, so that the fluid of the outlet passage 103' will flow back to the first inlet passage 101'.

Summary of the invention

In view of the deficiencies in the prior art, it is an object of the present invention to provide a switching valve.

In order to solve the above technical problem, the present application discloses a switching valve, comprising: a valve body having a first inlet passage, a second inlet passage, at least one outlet passage and an accommodating space, wherein the accommodating space is located Between the first inlet passage, the second inlet passage and the at least one outlet passage, and communicating with the first inlet passage, the second inlet passage and the at least one outlet passage; and a valve core structure disposed in the accommodating space And including a first spool corresponding to the first inlet passage and a second spool corresponding to the second inlet passage.

According to an embodiment of the present application, a spring is disposed between the first valve core and the second valve core.

According to an embodiment of the present application, the first valve body, the second valve body, and the spring are separately disposed.

According to an embodiment of the present application, both ends of the spring are connected to the first valve body and the second valve body.

According to an embodiment of the present application, a pre-compression spring is disposed between the first valve core and the second valve core, and both ends of the pre-compression spring abut the first valve core and the second valve core. The first valve core and the second valve core respectively abut against the side wall of the accommodating space around the first inlet passage and the side wall of the accommodating space around the second inlet passage.

According to an embodiment of the present application, the first valve core, the second valve core, and the pre-compression spring are separately disposed.

According to an embodiment of the present application, both ends of the pre-compression spring are connected to the first valve body and the second valve body.

According to an embodiment of the present application, one side of the first valve core corresponding to the first inlet passage is a curved surface, and one side of the second valve core corresponding to the second inlet passage is a curved surface. .

According to an embodiment of the present application, the first valve core and the second valve core are a solid sphere, a hollow sphere, a solid cylinder, a hollow cylinder, a solid shaped body having the curved surface, or a hollow having the curved surface. Alien body.

According to an embodiment of the present application, a sidewall of the accommodating space around the first inlet passage is a slope, the first valve core abuts against the sidewall, the sidewall and the first valve The surface of the core is tangent, the first spool closing the first inlet passage.

According to an embodiment of the present application, a sidewall of the accommodating space around the second inlet passage is a slope, and the second valve core abuts against the sidewall, the sidewall and the second valve The surface of the core is tangent, and the second spool closes the second inlet passage.

According to an embodiment of the present application, one side of the first valve core corresponding to the first inlet passage is a vertical plane, and one side of the second valve core corresponding to the second inlet passage is a vertical plane. .

According to an embodiment of the present application, the first valve core and the second valve core are a solid cylinder, a hollow cylinder, a solid shaped body having the vertical plane, or a hollow shaped body having the vertical plane.

According to an embodiment of the present application, a sidewall of the accommodating space around the first inlet passage is a vertical plane, and the first valve core abuts against the sidewall, the sidewall and the first The vertical plane of the spool is in close contact, and the first spool closes the first inlet passage.

According to an embodiment of the present application, a sidewall of the accommodating space around the second inlet passage is a vertical plane, and the second valve core abuts against the sidewall, the sidewall and the second The vertical plane of the spool is tight, and the second spool closes the second inlet passage.

According to an embodiment of the present application, the valve body includes a first tube body and at least one second tube body, and the two ends of the first tube body respectively have the first inlet passage and the second inlet passage, The middle portion of the first pipe body has the accommodating space, each second pipe body has the outlet passage, and the at least one second pipe body connects the middle portion of the first pipe body, each of the second pipes The outlet passage of the body communicates with the accommodating space.

According to an embodiment of the present application, the at least one second pipe body is inclined at an angle with respect to the first pipe body.

According to an embodiment of the present application, the at least one second pipe body is perpendicular to the first pipe body.

According to an embodiment of the present application, the valve body further includes at least one movable connecting tube, and the at least one movable connecting tube is disposed at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage, each of A movable connecting tube has a passage that communicates with the accommodating space.

According to an embodiment of the present application, the at least one movable connecting pipe is inserted into at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage.

According to an embodiment of the present application, the at least one movable connecting pipe is screwed to at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage.

According to an embodiment of the present application, an outer surface of each of the movable connecting tubes has an external thread, and sidewalls of the first inlet passage, the second inlet passage, and the at least one outlet passage have internal threads, and the at least one movable connection An external thread of the tube is threaded to an internal thread of at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage.

According to an embodiment of the present application, the at least one movable connecting pipe and the first inlet passage, At least one of the second inlet passage and the at least one outlet passage is spot welded.

According to an embodiment of the present application, the at least one movable connecting pipe is provided with at least one sealing ring between at least one of the first inlet passage, the second inlet passage and the at least one outlet passage.

Compared with the prior art, the present application can obtain the following technical effects:

The switching valve of the present application can shorten the movement stroke of each valve core through the valve core structure of the two valve cores, and improve the switching efficiency of the switching valve.

The switching valve of the present application can automatically return to the original position by switching the fluid into the direction by having a spring valve core structure, that is, the valve core structure does not need fluid pushing to achieve the resetting effect, and not only prevents the fluid of the outlet passage from flowing back to the first inlet passage. Or the second inlet passage also prevents the valve core structure from being blocked in the first inlet passage or the second inlet passage, reducing energy consumption and enabling the switching valve to achieve rapid switching.

The spring of the valve core structure of the present application can be replaced with a pre-compression spring. Before the switching valve is used, the pre-pressing spring presses the first valve core and the second valve core to the first inlet passage and the second inlet passage, and is closed. The first inlet passage and the second inlet passage prevent a small amount of external fluid from flowing into the switching valve from the first inlet passage and the second inlet passage.

DRAWINGS

Fig. 1 is a cross-sectional view showing a switching valve according to a first embodiment of the present application.

2 is a cross-sectional view of a switching valve according to a second embodiment of the present application.

3 is a first use state diagram of a switching valve according to a second embodiment of the present application.

4 is a second use state diagram of the switching valve of the second embodiment of the present application.

Figure 5 is a cross-sectional view showing a switching valve according to a third embodiment of the present application.

Figure 6 is a cross-sectional view showing a switching valve of a fourth embodiment of the present application.

Figure 7 is a cross-sectional view showing a switching valve according to a fifth embodiment of the present application.

Figure 8 is a cross-sectional view showing a switching valve of a sixth embodiment of the present application.

Figure 9 is a cross-sectional view showing a switching valve of a seventh embodiment of the present application.

Figure 10 is a cross-sectional view showing a switching valve of an eighth embodiment of the present application.

Figure 11 is a cross-sectional view showing a switching valve of a ninth embodiment of the present application.

Figure 12 is a cross-sectional view showing a switching valve of a tenth embodiment of the present application.

Figure 13 is a cross-sectional view showing a switching valve according to an eleventh embodiment of the present application.

Figure 14 is a cross-sectional view showing a switching valve according to a twelfth embodiment of the present application.

Figure 15 is a cross-sectional view showing a switching valve according to a thirteenth embodiment of the present application.

Figure 16 is a cross-sectional view showing a switching valve of a fourteenth embodiment of the present application.

Figure 17 is a cross-sectional view showing a switching valve of a fifteenth embodiment of the present application.

Figure 18 is a cross-sectional view showing a switching valve of a sixteenth embodiment of the present application.

Figure 19 is a cross-sectional view of a general switching valve.

detailed description

In the following, various embodiments of the present application are disclosed in the drawings. For the sake of clarity, the details of the invention are described in the following description. However, it should be understood that these practical details are not intended to limit the application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, some of the conventional structures and components are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

The use of "first", "second", etc., as used herein, does not specifically mean the order or order, and is not intended to limit the application, but merely to distinguish between components or operations described in the same technical terms. .

Embodiment 1

Please refer to FIG. 1 , which is a cross-sectional view of the switching valve 1 according to the first embodiment of the present application. As shown in the figure, the embodiment provides a switching valve 1 including a valve body 10 and a valve core structure 11 . The body 10 has a first tube body 101 and a second tube body 102, and the two ends of the first tube body 101 respectively have a first inlet passage The first inlet channel 1012 has a receiving space 1013. The receiving space 1013 is located between the first inlet channel 1011 and the second inlet channel 1012, and is connected to the first inlet channel 1011 and the second inlet channel 1012. . The width W1 of the accommodating space 1013 is greater than the width W2 of the first inlet passage 1011 and the second inlet passage 1012. The second tube body 102 has an outlet passage 1021, the second tube body 102 is connected to the middle portion of the first tube body 101, and the outlet channel 1021 is in communication with the accommodating space 1013. The width W3 of the outlet channel 1021 is smaller than the width W1 of the accommodating space 1013. The accommodating space 1013 is located between the first inlet passage 1011, the second inlet passage 1012 and the outlet passage 1021, and is a fluid flow space.

The valve core structure 11 has a first valve body 111 and a second valve core 112. The first valve core 111 and the second valve core 112 are located in the accommodating space 1013. The first valve core 111 corresponds to the first inlet passage 1011, and the second valve The core 112 corresponds to the second inlet passage 1012. The first valve core 111 and the second valve core 112 of the embodiment are solid spheres having a diameter smaller than the width W1 of the accommodating space 1013 and larger than the first inlet passage 1011 and the second inlet. The width of the channel 1012 is W2, the first spool 111 blocks the passage between the first inlet passage 1011 and the outlet passage 1021, and the second spool 112 blocks the passage between the second inlet passage 1012 and the outlet passage 1021. When the fluid flows into the accommodating space 1013 from the first inlet passage 1011 or the second inlet passage 1012, the fluid pushes the first spool 111 to move toward the second spool 112, and the first spool 111 pushes the second spool 112 to the first The second inlet passage 1012 moves, so that the second valve core 112 abuts against the side wall 10131 of the accommodating space 1013 around the second inlet passage 1012, and makes the first inlet passage 1011 and the outlet passage 1021 form a passage; when the fluid is from the second When the inlet passage 1012 enters the accommodating space 1013, the fluid pushes the second valve core 112 to move toward the first valve core 111, and the second valve core 112 pushes the first valve core 111 to move toward the first inlet passage 1011, so that the second spool 112 or the first valve core 111 abuts against the sidewall 10131 of the accommodating space 1013 around the second inlet passage 1012 or the first inlet passage 1011, and forms the first inlet passage 1011 or the second inlet passage 1012 and the outlet passage 1021. The passage can shorten the movement stroke of each spool and improve the switching efficiency of the switching valve 1.

Embodiment 2

Please refer to FIG. 2 , which is a cross-sectional view of the switching valve 1 of the second embodiment of the present application; The embodiment is different from the above embodiment in that the valve core structure 11 of the present embodiment is disposed in the accommodating space 1013 and includes a first valve body 111, a second valve body 112 and a spring 113. The first valve core 111 corresponds to the first inlet passage 1011, and the second valve core 112 corresponds to the second inlet passage 1012. The first valve body 111 and the second valve core 112 of the embodiment are The solid sphere has a diameter smaller than the width W1 of the accommodating space 1013 and larger than the width W2 of the first inlet passage 1011 and the second inlet passage 1012, and the first spool 111 blocks the passage between the first inlet passage 1011 and the outlet passage 1021. The second spool 112 blocks the passage between the second inlet passage 1012 and the outlet passage 1021.

Please refer to FIG. 3 and FIG. 4 , which are a first state of use diagram and a second state of use of the switching valve 1 according to the second embodiment of the present application; as shown in the figure, when the switching valve 1 of the embodiment is in use, The fluid is introduced from the first inlet passage 1011, and the fluid flows toward the accommodating space 1013, and pushes the valve core structure 11 to move toward the second inlet passage 1012. The first valve body 111 is pushed by the fluid to compress the spring 113, and the second valve body Before the sidewalls 10131 of the accommodating space 1013 around the second inlet passage 1012 are not abutted, the compressed spring 113 generates a thrust to push the second spool 112 to move toward the second inlet passage 1012. The second valve core 112 abuts against the side wall 10131 of the accommodating space 1013 around the second inlet passage 1012 and closes one end of the second inlet passage 1012 communicating with the accommodating space 1013 to prevent fluid from entering the second inlet passage 1012. At the same time, the fluid continuously pushes the first valve core 111 to move toward the second inlet passage 1012, and the first valve core 111 compresses the spring 113 to approach the second valve core 112, so that the first inlet passage 1011 and the outlet passage 1021 form a passage, the fluid It flows out from the outlet passage 1021 as shown in FIG.

When the supply of the fluid to the first inlet passage 1011 is stopped, the spool structure 11 is not pushed by the fluid, the compressed spring 113 is restored to the original state, and the first spool 111 and the second spool 112 are quickly moved back to the original position, first The spool 111 blocks the passage between the first inlet passage 1011 and the outlet passage 1021, and the second spool 112 blocks the passage between the second inlet passage 1012 and the outlet passage 1021, as shown in FIG. Before the fluid is supplied from the second inlet passage 1012, the spool structure 11 has automatically returned to the original position, that is, the first spool 111 blocks the passage between the first inlet passage 1011 and the outlet passage 1021, and the second spool 112 blocks the passage. a passage between the inlet passage 1012 and the outlet passage 1021, thus preventing passage The fluid exiting the passage 1021 flows back to the first inlet passage 1011 or the second inlet passage 1012 while also preventing the spool structure 11 from becoming clogged with the first inlet passage 1011 or the second inlet passage 1012.

Then, the fluid is introduced from the second inlet passage 1012, and the fluid first pushes the second valve core 112. The second valve core 112 moves the first valve core 111 to the first inlet passage 1011 through the spring 113 until the first valve core 111 abuts. The second valve body 112 continues to be pushed by the fluid and compresses the spring 113 to approach the first valve core 111 to make the second inlet passage 1012 and the outlet passage 1021 to the side wall 10131 of the accommodating space 1013 around the first inlet passage 1011. The passage is formed, and the fluid flows out from the outlet passage 1021 and does not flow out from the first inlet passage 1011 as shown in FIG.

In the above embodiment, the first valve body 111 and the second valve body 112 are solid spheres, and the side wall 10131 of the accommodating space 1013 around the first inlet passage 1011 and the second inlet passage 1012 is a sloped surface, such that the first spool 111 or the first When the two valve cores 112 abut against the side walls 10131 of the accommodating space 1013 around the first inlet passage 1011 or the second inlet passage 1012, the surface of the first valve body 111 or the second valve core 112 is tangent to the side wall 10131. There is no gap between the first valve body 111 or the second valve body 112 and the side wall 10131, and fluid does not flow from the gap between the first valve body 111 or the second valve body 112 and the side wall 10131, so that the fluid does not flow from the gap. The first inlet passage 1011 to be closed by the first spool 111 or the second inlet passage 1012 to be closed by the second spool 112 is leaked to ensure that the fluid completely passes through the passage formed by the first inlet passage 1011 and the outlet passage 1021. The passage formed by the two inlet passages 1012 and the outlet passage 1021 flows out to reduce the fluid loss rate. The first valve body 111 and the second valve body 112 of the above embodiment may also use a solid cylinder, which achieves the same function as described above, and will not be described herein.

It can be seen from the above that the valve core structure 11 of the switching valve 1 of the present embodiment is pushed by the fluid entering through the first inlet passage 1011 or the second inlet passage 1012, and the valve core structure 11 can close the first inlet passage 1011 or the second inlet passage 1012. The second inlet passage 1012 or the first inlet passage 1011 forms a passage with the outlet passage 1021, and the fluid flows out of the outlet passage 1021. The fluid stops entering the first inlet passage 1011 or the second inlet passage 1012, that is, stops pushing the spool structure 11, and the compressed spring 113 in the spool structure 11 is released, and the first spool 111 and the second spool 112 are quickly moved. Returning to the position of blocking the first inlet passage 1011 and the outlet passage 1021, respectively, and blocking the passage of the second inlet passage 1012 and the outlet The position of the track 1021, that is, the spool structure 11 is automatically reset to prevent backflow of fluid within the outlet passage 1021 to the first inlet passage 1011 or the second inlet passage 1012. In addition, it also indicates that the valve core structure 11 can quickly switch state, and after the fluid entering direction is changed, the problem that the valve core structure 11 is blocked does not occur, and the flow or pressure of the fluid needs to be increased, the energy consumption is effectively reduced, and the switching of the switching valve 1 is improved. effectiveness.

Embodiment 3

Please refer to FIG. 5 , which is a cross-sectional view of the switching valve 1 according to the third embodiment of the present invention. As shown in the figure, the switching valve 1 of the present embodiment is different from the switching valve 1 of the second embodiment in the valve core structure of the embodiment. The first valve body 111, the second valve body 112, and the spring 113 of the first valve body 111 are disposed in the accommodating space 1013. The spring 113 is disposed between the first valve body 111 and the second valve body 112. When the fluid enters from the first inlet passage 1011, the fluid first pushes the first valve body 111, then the first valve core 111 pushes one end of the spring 113, the other end of the spring 113 abuts against the second valve core 112, and pushes the first The second spool 112 moves toward the second inlet passage 1012 until the second spool 112 closes the second inlet passage 1012, and the first spool 111 or the second spool 112 is continuously pushed by the fluid, and compresses the spring 113 to the second valve. The core 112 is in close proximity such that a passage is formed between the first inlet passage 1011 and the outlet passage 1021 to allow fluid to flow out of the outlet passage 1021. After the fluid stops entering the first inlet passage 1011, the compressed spring 113 is released, the spring 113 pushes the first spool 111 back to the original position, and the first spool 111 blocks between the first inlet passage 1011 and the outlet passage 1021. path.

When the fluid enters from the second inlet passage 1012, the fluid first pushes the second spool 112, then the second spool 112 pushes one end of the spring 113, the other end of the spring 113 abuts against the first spool 111, and pushes the first A spool 111 moves toward the first inlet passage 1011 until the first spool 111 closes the first inlet passage 1011, the second spool 112 continues to be pushed by the fluid, and compresses the spring 113 to approach the first spool 111, so that the second A passage is formed between the inlet passage 1012 and the outlet passage 1021 to allow fluid to flow out of the outlet passage 1021. After the fluid stops entering the second inlet passage 1012, the compressed spring 113 is released, the spring 113 pushes the second spool 112 back to the original position, and the second spool 112 blocks between the second inlet passage 1012 and the outlet passage 1021. path.

As can be seen from the above, the valve body structure 11 of the present embodiment is different from the valve body structure 11 of the first embodiment, but The same effect as in the first embodiment can also be achieved.

Embodiment 4

Please refer to FIG. 6 , which is a cross-sectional view of the switching valve 1 according to the fourth embodiment of the present invention. As shown in the figure, the switching valve 1 of the present embodiment is different from the switching valve of the second embodiment in that the spring of the second embodiment is replaced with a pre-spring. When the valve core structure 11 of the present embodiment is disposed in the accommodating space 1013 of the valve body 10, the pre-compression spring 113a is deployed to push the first valve body 111 and the second valve body 112 to make the first valve. The core 111 and the second valve core 112 respectively abut against the side wall 10131 of the accommodating space 1013 around the first inlet passage 1011 and the side wall 10131 of the accommodating space 1013 around the second inlet passage 1012. When the switching valve 1 is not in use, the first valve body 111 and the second valve body 112 have completely closed one end of the first inlet passage 1011 and the second inlet passage 1012 that communicate with the accommodating space 1013, and a small amount of fluid cannot be discharged from the first inlet. The channel 1011 and the second inlet channel 1012 enter the accommodating space 1013. The pre-compression spring 113a of this embodiment can also replace the spring of the second embodiment, and details are not described herein again.

Embodiment 5

Please refer to FIG. 7 , which is a cross-sectional view of the switching valve 1 according to the fifth embodiment of the present application. As shown in the figure, the switching valve 1 of the present embodiment is different from the switching valve of the above embodiment in the first valve core of the above embodiment. The first valve body 111 and the second valve body 112 of the present embodiment are hollow spheres, so that the weight of the first valve core 111 and the second valve core 112 are reduced, and the valve core structure 11 is increased. The speed of movement. Of course, the first valve body 111 and the second valve core 112 of the embodiment may also be hollow cylinders, and details are not described herein again.

Embodiment 6 and Embodiment 7

Please refer to FIG. 8 and FIG. 9 , which are cross-sectional views of the switching valve 1 and the sectional view of the switching valve 1 of the seventh embodiment of the present application. As shown in the figure, the switching valve 1 of the sixth embodiment and the seventh embodiment is shown. The difference between the first valve body 111 and the second valve body 112 of the valve body structure 11 of the sixth embodiment and the seventh embodiment is a different-shaped body, and the first valve body 111 and the first embodiment of the sixth embodiment are different from the above-described embodiment. The second valve body 112 is a solid shaped body, and the first valve body 111 and the second valve body 112 of the seventh embodiment are hollow shaped bodies, and the two side surfaces of the embodiment 6 and the seventh embodiment are mutually symmetrical curved surfaces, that is, Solid shaped body with curved surface and empty The heart-shaped body has a curved surface on one side of the first valve body 111 corresponding to the first inlet passage 1011, and a curved surface on one side of the second valve core 112 corresponds to the second inlet passage 1012. Of course, the shaped body can be in other forms, as long as the side close to the first inlet passage 1011 or the second inlet passage 1012 is a curved surface, and can move within the accommodating space 1013.

One side of the first valve body 111 corresponding to one side of the first inlet passage 1011 of the above embodiment is a curved surface, and one side of the second valve core 112 corresponding to the second inlet passage 1012 is a curved surface, and the first valve body 111 The curved surface abuts against the side wall 10131 of the accommodating space 1013 which is slanted, and the curved surface is tangential to the side wall 10131 to close the first inlet passage 1011; similarly, the curved surface of the second valve core 112 abuts on the inclined surface The side wall 10131 of the accommodating space 1013 has a curved surface tangential to the side wall 10131 to close the second inlet passage 1012.

Embodiment 8 and Embodiment 9

10 and FIG. 11 are cross-sectional views of the switching valve 1 and the cross-sectional view of the switching valve 1 of the ninth embodiment of the present application; as shown, the switching valve 1 of the eighth embodiment and the ninth embodiment Different from the switching valve 1 of the above embodiment, the first valve body 111 and the second valve body 112 of the valve body structure 11 of the eighth embodiment and the ninth embodiment are respectively a cylinder, the first valve body 111 of the eighth embodiment and The second valve body 112 is a solid cylinder, and the first valve body 111 and the second valve body 112 of the ninth embodiment are hollow cylinders. In the eighth embodiment and the ninth embodiment, the side of the first valve body 111 corresponding to the first inlet passage 1011 is a vertical plane, so that the side wall 10131 corresponding to the accommodating space 1013 on the side of the first valve body 111 is also a vertical plane. When the first valve body 111 abuts against the side wall 10131 of the accommodating space 1013, the first valve body 111 and the side wall 10131 of the accommodating space 1013 are completely closed to achieve the function of closing the first inlet passage 1011; In the eighth embodiment and the ninth embodiment, the side of the second valve body 112 corresponding to the second inlet passage 1012 is also a vertical plane, and the side wall 10131 corresponding to the accommodating space 1013 on the side of the second valve body 112 is also In the vertical plane, when the second valve core 112 abuts against the side wall 10131 of the accommodating space 1013, the second valve body 112 and the side wall 10131 of the accommodating space 1013 are completely in contact with each other to seal the second inlet passage 1012. The first valve core 111 and the second valve core 112 of the eighth embodiment and the ninth embodiment of the first embodiment can be an alien body, as long as one side of the first valve core 111 corresponding to the first inlet passage 1011 and the second corresponding inlet passage 1012 are corresponding. One side of the two spools 112 is a vertical plane, that is, the first spool 111 and the second spool 112 may have a vertical The first solid body 111 and the second valve body 112 are movable in the accommodating space 1013.

The fifth embodiment to the ninth embodiment of the present invention disclose various forms of the first valve body 111 and the second valve body 112, which can be applied to the switching valves of the first embodiment to the fourth embodiment, and details are not described herein again.

Example ten

Please refer to FIG. 12, which is a cross-sectional view of the switching valve 1 of the tenth embodiment of the present invention. As shown in the figure, the switching valve 1 of the present embodiment is different from the switching valve of the above embodiment in the second tube of the above embodiment. 102 is perpendicular to the first pipe body 101, and the second pipe body 102 of the valve body 10 of the present embodiment is inclined at an angle with respect to the first pipe body 101.

Embodiment 11

Please refer to FIG. 13 , which is a cross-sectional view of the switching valve 1 of the eleventh embodiment of the present application. As shown, the valve body 10 of the present embodiment has two second tubes 102 and two second tubes 102 respectively. The two outlet channels 1021 of the two second tubes 102 communicate with the accommodating space 1013. When the switching valve 1 of the present embodiment is in use, fluid enters from the first inlet passage 1011, and the fluid pushes the spool structure 11 toward the second inlet passage 1012 to abut the second spool 112 adjacent to the second inlet passage 1012. The second inlet passage 1012 is closed by the side wall 10131 of the accommodating space 1013 around the second inlet passage 1012. At the same time, the first valve core 111 is continuously pressed by the fluid thrust to the second valve core 112, so that the first inlet passage 1011 and the two outlet passages 1021 form a passage, and the fluid flows out from the two outlet passages 1021. Similarly, the fluid enters from the second inlet passage 1012, the spool structure 11 moves toward the first inlet passage 1011, and closes the first inlet passage 1011, and allows the second inlet passage 1012 and the two outlet passages 1021 to form a passage. The fluid entering the second inlet passage 1012 flows out of the two outlet passages 1021 so that the fluid can flow out from the two outlet passages 1021 at the same time to increase the fluid output rate.

The two second tubes 102 of the present embodiment are respectively perpendicular to the first tube body 101. Of course, the two second tube bodies 101 can also be inclined at an angle with respect to the first tube body 101, and details are not described herein.

Example twelve

Referring to FIG. 14, which is a cross-sectional view of the switching valve 1 of the twelfth embodiment of the present application; as shown, the valve body 10 of the present embodiment further includes a movable connecting tube 103, and the movable connecting tube 103 is disposed on the first tube body. The first inlet passage 1011 of the 101, the passage 1031 of the movable connecting tube 103 forms a new inlet passage, and the passage 1031 communicates with the accommodating space 1013. The movable connecting tube 103 can be assembled to the first inlet passage 1011 of the first tubular body 101 according to the needs of the user. For example, the user needs a passage having a smaller width. At this time, the movable connecting tube 103 that meets the user's needs can be assembled. The first inlet passage 1011 of the first pipe body 101; when the user wants to use the original first inlet passage 1011, the user directly detaches the movable connecting pipe 103 from the first inlet passage 1011 of the first pipe body 101. The user wants to change the width of the second inlet passage 1012 or the outlet passage 1021, and may also select the second inlet passage 1012 of the first tubular body 101 or the outlet passage 1021 of the second tubular body 102 to provide the movable connecting tube 103.

Example thirteen

Referring to FIG. 15, which is a cross-sectional view of the switching valve 1 of the thirteenth embodiment of the present invention; as shown, the valve body 10 of the present embodiment further includes two movable connecting tubes 103, and the two movable connecting tubes 103 are respectively disposed. The first inlet passage 1011 and the second inlet passage 1012 of the first pipe body 101. Of course, the two movable connecting tubes 103 can be disposed on the first inlet passage 1011 of the first tubular body 101 and the outlet passage 1021 of the second tubular body 102 or the second inlet disposed in the first tubular body 101 according to the needs of the user. The passage 1011 and the outlet passage 1021 of the second tubular body 102.

Embodiment 14

Referring to FIG. 16, which is a cross-sectional view of the switching valve 1 of the fourteenth embodiment of the present application; as shown, the valve body 10 of the present embodiment further includes three movable connecting tubes 103, and three movable connecting tubes 103 are respectively disposed. The first inlet passage 1011 of the first pipe body 101, the second inlet passage 1012 of the first pipe body 101, and the outlet passage 1021 of the second pipe body 102.

Example fifteen

Referring to FIG. 17, which is a cross-sectional view of the switching valve 1 of the fifteenth embodiment of the present application; as shown in the figure, the movable connecting tube 103 of the above-mentioned Embodiments 12 to 14 is directly inserted into the first inlet passage 1011. a second inlet passage 1012 or an outlet passage 1021. Of course, the movable connecting tube 103 can also pass The other manner is disposed in the first inlet channel 1011, the second inlet channel 1012 or the outlet channel 1021. In the embodiment, the movable connecting tube 103 is screwed to the first inlet channel 1011, the second inlet channel 1012 or the outlet channel 1021. connection. For example, the outer surface of the movable connecting tube 103 has an external thread 1032, and the side wall of the first inlet passage 1011, the second inlet passage 1012 or the outlet passage 1021 has an internal thread 104, and when the movable connecting tube 103 is disposed at the first inlet passage 1011, the second inlet passage 1012 or the outlet passage 1021, the external thread 1032 of the movable connecting tube 103 is screwed with the internal thread 104 of the first inlet passage 1011, the second inlet passage 1012 or the outlet passage 1021, so that the movable connecting tube 103 The first inlet passage 1011, the second inlet passage 1012 or the outlet passage 1021 are not detached by the fluid, and the movable connecting tube 103 can still be detached from the first inlet passage 1011, the second inlet passage 1012 or the outlet passage 1021.

Referring to FIG. 14 to FIG. 17 , after the movable connecting tube 103 is inserted or screwed into the first inlet channel 1011 , the second inlet channel 1012 or the outlet channel 1021 , the movable connecting tube 103 can be directly fixed to the first inlet channel 1011 . The second inlet passage 1012 or the outlet passage 1021, wherein the movable connecting pipe 103 is welded to the first inlet passage 1011, the second inlet passage 1012 or the outlet passage 1021 by spot welding.

Example sixteen

Referring to FIG. 18, it is a cross-sectional view of the switching valve 1 of the sixteenth embodiment of the present application. As shown in the figure, the sealing ring 105 is further disposed between the movable connecting tube 103 and the first inlet passage 1011. 105 is filled between the outer side surface of the movable connecting pipe 103 and the side wall of the first inlet passage 101, effectively preventing fluid from leaking from the gap between the movable connecting pipe 103 and the first inlet passage 1011, reducing the fluid loss rate. Of course, the sealing ring 105 of the present embodiment can be applied between the second inlet passage 1012 and the movable connecting tube 103 in the fourteenth embodiment and the fifteenth embodiment, or between the outlet passage 1021 and the movable connecting tube 103, and details are not described herein.

Referring to FIG. 14 to FIG. 18 , the end surface of one end of the movable connecting tube 103 that communicates with the accommodating space 1013 is determined according to the shape of the first valve body 111 and the second valve body 112 of the valve core structure 11 , for example, the first valve The core 111 and the second valve core 112 are solid spheres, hollow spheres, solid cylinders, hollow circles a cylindrical body, a solid shaped body having a curved surface or a hollow shaped body having a curved surface, and an end surface of one end of the movable connecting pipe 103 that communicates with the accommodating space 1013 is a sloped surface that can be opposite to the surface of the first valve body 111 or the second valve body 112 Tangentially, when the first spool 111 or the second spool 112 abuts against the end surface of the movable connecting pipe 103, the passage 1031 of the movable connecting pipe 103 is closed. If the first valve body 111 and the second valve body 112 are solid cylinders, hollow cylinders, solid shaped bodies having vertical planes or hollow shaped bodies having vertical planes, one end of the movable connecting tube 103 that communicates with the accommodating space 1013 The end surface is a vertical plane that can be closely adhered to a vertical plane on the side of the first valve body 111 or the second valve body 112, and is closed when the first valve body 111 or the second valve body 112 abuts against the end surface of the movable connecting tube 103. The channel 1031 of the movable connection pipe 103.

In summary, the present application provides a switching valve characterized by a valve core structure. The valve core structure of the present application includes a first valve core and a second valve core, which can shorten the movement stroke of each valve core and improve the switching valve. Switching efficiency. The valve core structure of the present application can further provide a spring between the first valve core and the second valve core, and the spring valve core structure can automatically return to the original position before switching the fluid entering direction, that is, the valve core structure does not need fluid pushing to reach The function of the reset not only prevents the fluid of the outlet passage from flowing back to the first inlet passage or the second inlet passage, but also prevents the valve core structure from being blocked in the first inlet passage or the second inlet passage, reducing energy consumption and enabling the switching valve to reach The role of fast switching. The spring of the valve core structure can be replaced with a pre-compression spring. Before the switching valve is used, the pre-pressing spring presses the first valve core and the second valve core to the first inlet passage and the second inlet passage to close the first inlet. The passage and the second inlet passage prevent a small amount of external fluid from flowing into the switching valve from the first inlet passage and the second inlet passage.

The above description is only for the embodiments of the present application and is not intended to limit the application. Various changes and modifications can be made to the present application by those skilled in the art. Any modifications, equivalents, improvements, etc. made within the spirit and principles of the present application are intended to be included within the scope of the appended claims.

Claims

A switching valve, comprising:

The valve body has a first inlet passage, a second inlet passage, at least one outlet passage and an accommodating space, and the accommodating space is located between the first inlet passage, the second inlet passage and the at least one outlet passage, and communicates with the Said first inlet passage, second inlet passage and at least one outlet passage;

a valve core structure, disposed in the accommodating space, and including a first valve core and a second valve core, the first valve core corresponding to the first inlet passage, and the second valve core corresponding to the second Import channel.
The switching valve according to claim 1, wherein a spring is disposed between the first valve core and the second valve core.
The switching valve according to claim 2, wherein said first spool, said second spool, and a spring are disposed separately.
The switching valve according to claim 2, wherein both ends of the spring are coupled to the first spool and the second spool.
The switching valve according to claim 1, wherein a pre-compression spring is disposed between the first valve core and the second valve core, and both ends of the pre-compression spring abut the first valve core And the second valve core, the first valve core and the second valve core respectively abut the side wall of the accommodating space around the first inlet passage and the accommodating around the second inlet passage The side walls of the space.
The switching valve according to claim 5, wherein said first spool, said second spool, and said preloading spring are separately provided.
The switching valve according to claim 5, wherein both ends of the pre-compression spring are coupled to the first spool and the second spool.
The switching valve according to any one of claims 1 to 7, wherein one side of the first valve core corresponding to the first inlet passage is a curved surface corresponding to the second inlet passage One side of the second spool is a curved surface.
The switching valve according to claim 8, wherein the first valve core and the second valve core are solid spheres, hollow spheres, solid cylinders, hollow cylinders, solid shaped bodies having the curved faces or a hollow shaped body having the curved surface.
The switching valve according to claim 9, wherein a side wall of the accommodating space around the first inlet passage is a slope, and the first valve core abuts against the side wall, the side The wall is tangential to a surface of the first spool, the first spool closing the first inlet passage.
The switching valve according to claim 9, wherein a side wall of the accommodating space around the second inlet passage is a slope, and the second valve core abuts against the side wall, the side The wall is tangential to a surface of the second spool, the second spool closing the second inlet passage.
The switching valve according to any one of claims 1 to 7, wherein one side of the first spool corresponding to the first inlet passage is a vertical plane corresponding to the second inlet passage One side of the second spool is a vertical plane.
The switching valve according to claim 12, wherein the first valve core and the second valve core are solid cylinders, hollow cylinders, solid shaped bodies having the vertical plane or having the vertical plane Hollow shaped body.
The switching valve according to claim 13, wherein a side wall of the accommodating space around the first inlet passage is a vertical plane, and the first valve core abuts against the side wall, A sidewall is in close contact with a vertical plane of the first spool, the first spool closing the first inlet passage.
The switching valve according to claim 13, wherein a side wall of the accommodating space around the second inlet passage is a vertical plane, and the second valve core abuts against the side wall, The side wall is in close contact with a vertical plane of the second spool, and the second spool closes the second inlet passage.
The switching valve according to any one of claims 1 to 7, wherein the valve body comprises a first pipe body and at least one second pipe body, and both ends of the first pipe body respectively have a a first inlet passage and a second inlet passage, wherein the middle portion of the first tubular body has the accommodating space, each second tubular body has the outlet passage, and the at least one second tubular body connects the first In the middle of a tube body, the outlet passage of each of the second tubes communicates with the accommodating space.
The switching valve of claim 16 wherein said at least one second tubular body is inclined at an angle relative to said first tubular body.
The switching valve of claim 16 wherein said at least one second tubular body is perpendicular to said first tubular body.
The switching valve according to claim 16, wherein the valve body further comprises at least one movable connecting pipe, the at least one movable connecting pipe being disposed at the first inlet passage, the second inlet passage, and at least one outlet At least one of the channels, each of the movable connecting tubes having a channel, the channel and the The space is connected to the space.
The switching valve of claim 19, wherein the at least one movable connecting tube is inserted into at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage.
The switching valve of claim 19, wherein the at least one movable connecting tube is threaded to at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage.
The switching valve according to claim 21, wherein an outer side surface of each of the movable connecting tubes has an external thread, and sidewalls of the first inlet passage, the second inlet passage, and the at least one outlet passage have internal threads The external thread of the at least one movable connecting tube is screwed to an internal thread of at least one of the first inlet passage, the second inlet passage, and the at least one outlet passage.
The switching valve according to claim 19, wherein said at least one movable connecting pipe is spot welded to at least one of said first inlet passage, said second inlet passage, and at least one outlet passage.
The switching valve according to claim 19, wherein said at least one movable connecting pipe is provided with at least one sealing ring between at least one of said first inlet passage, said second inlet passage and said at least one outlet passage.