Airflow switching device

Abstract

The utility model relates to an airflow switch device, it includes: a main part, a sliding sleeve and a positioning structure. The main part defines an axial direction and a radial direction, the main part includes a first pipeline, a second pipeline, a blocking part, at least one first through hole, at least one second through hole, the blocking part is transversely arranged between the first pipeline and the second pipeline, the at least one first through hole is connected with the first pipeline along the radial direction, and the at least one second through hole is connected with the second pipeline along the radial direction. The sliding sleeve is movably sleeved on the main part, the sliding sleeve and the main part jointly define a communication space, and the sliding sleeve can move along the axial direction to make the communication space simultaneously communicate the at least one first through hole and the at least one second through hole. The positioning structure includes at least one first positioning part and at least one second positioning part, when the sliding sleeve rotates to a positioning position with the main part as the shaft, the at least one first positioning part and the at least one second positioning part interfere with each other in the axial direction and stop arrangement.

Description

Technical Field

[0001] This utility model relates to airflow switching devices, and in particular to an airflow switching device. Background Technology

[0002] Existing pneumatic systems generally employ a design that combines valve body and control mechanism to control the flow and blockage of compressed air. Common airflow control devices, such as ball valves, needle valves, or slide valves, mostly achieve opening or closing through rotating or pushing components, and prevent leakage through seals.

[0003] However, most of these traditional structures are only suitable for controlling a single pipeline. When used as a master switch between an air source and multiple pneumatic devices, they often suffer from drawbacks such as bulky structure, unintuitive operation, and insufficient switching speed. In addition, existing control valves often require the user to rotate them multiple times or be driven by an external controller when switching on or off, which is not conducive to rapid opening and closing.

[0004] Therefore, it is necessary to provide a novel and advanced airflow switching device to solve the above-mentioned problems. Utility Model Content

[0005] The main purpose of this utility model is to provide an airflow switch device that can quickly block or connect the first pipe and the second pipe through the axial movement of the sliding sleeve, and can maintain the position of the sliding sleeve through the positioning structure to improve the stability and reliability of operation.

[0006] To achieve the above objectives, this utility model provides an airflow switch device, comprising: a main body, a sliding sleeve, and a positioning structure. The main body defines an axial direction and a radial direction, and includes a first pipe, a second pipe, a stop, at least one first through hole, and at least one second through hole. The stop is transversely disposed between the first pipe and the second pipe to block direct axial communication between the first pipe and the second pipe. The at least one first through hole extends radially and communicates with the first pipe, and the at least one second through hole extends radially and communicates with the second pipe. The sliding sleeve is movable along the axial direction and rotatably fitted onto the main body. The sliding sleeve and the main body together define a communication space. When the sliding sleeve moves axially to a blocking position, the communication space only communicates with the at least one first through hole, and the first pipe and the second pipe remain in a non-communicating state. When the sliding sleeve moves axially to a communicating position, the communication space communicates with the at least one first through hole and the at least one second through hole, thereby establishing communication between the first pipe and the second pipe. The positioning structure includes at least one first positioning part and at least one second positioning part. The at least one first positioning part protrudes from the outer wall surface of the main body, and the at least one second positioning part protrudes from the inner wall surface of the sliding sleeve. When the sliding sleeve rotates about the main body as an axis to a positioning position, the at least one first positioning part and the at least one second positioning part are mutually interfered and blocked in the axial direction. When the sliding sleeve rotates about the main body as an axis to a release position, the at least one first positioning part and the at least one second positioning part are misaligned in the axial direction.

[0007] The main body is further defined in a circumferential direction, and the number of the at least one first positioning part is multiple. The multiple first positioning parts are arranged at intervals in the circumferential direction, and the at least one second positioning part can move along the axial direction to the space between any two adjacent first positioning parts.

[0008] The positioning structure further includes at least one first stop and at least one second stop. The at least one first stop protrudes from the main body, and the at least one second stop protrudes from the sliding sleeve. When the sliding sleeve is in the communicating position and rotates along a first direction to switch the positioning position from the release position, the at least one first stop and the at least one second stop interfere with each other in the first direction, preventing the sliding sleeve from rotating along the first direction.

[0009] The main body is further defined in a circumferential direction, and the number of the at least one second positioning part is multiple. The multiple second positioning parts are arranged at intervals in the circumferential direction, so that the at least one first positioning part can move through the space between any two adjacent second positioning parts along the axial direction.

[0010] The airflow switch device further includes two sealing rings, which are disposed on the inner wall surface of the sliding sleeve and move in the same direction. The two sealing rings are located on opposite sides of the communicating space in the axial direction, and each sealing ring abuts against the outer wall surface of the main body.

[0011] The main body is further defined in a circumferential direction, the at least one first positioning part includes a plurality of first teeth arranged along the axial direction, and the at least one second positioning part includes a plurality of second teeth arranged along the axial direction. When the sliding sleeve rotates to the positioning position, the plurality of first teeth and the plurality of second teeth mesh with each other.

[0012] One of the at least one first positioning part and the at least one second positioning part is a spirally extending arc segment, and the other is a protrusion.

[0013] A positioning recess is provided in the arc segment. When the sliding sleeve rotates to the positioning position, part of the protrusion is accommodated in the positioning recess.

[0014] At least one first positioning part is provided on the main body, at least one second positioning part is provided on the sliding sleeve, and at least one third stop part protrudes from the inner wall surface of the sliding sleeve. When the sliding sleeve rotates along a first direction from the release position to the positioning position, the at least one first positioning part and the at least one third stop part abut against each other in the axial direction, so that the sliding sleeve can no longer rotate along the first direction.

[0015] The positioning structure further includes at least one first stop and at least one second stop. The at least one first stop protrudes from the main body, and the at least one second stop protrudes from the sliding sleeve. When the sliding sleeve is in the communicating position and rotates along a first direction to switch the positioning position from the release position, the at least one first stop and the at least one second stop interfere with each other in the first direction, preventing the sliding sleeve from rotating along the first direction. The main body further defines a circumferential direction, and the number of the at least one second positioning part is multiple. The multiple second positioning parts are spaced apart in the circumferential direction, so that each first positioning part can move through the space between any two adjacent second positioning parts along the axial direction. The airflow switch device further includes two sealing rings. The two sealing rings are disposed on the inner wall surface of the sliding sleeve and move in tandem. The two sealing rings are located on opposite sides of the communicating space in the axial direction, and each sealing ring abuts against the outer wall surface of the main body. Each first positioning part includes a multiple first teeth arranged along the axial direction. Each of the second positioning portions includes a plurality of second teeth arranged along the axial direction. When the sliding sleeve rotates to the positioning position, the plurality of first teeth and the plurality of second teeth mesh with each other. The main body includes a first end and a second end opposite to each other, with a first conduit disposed at the first end and a second conduit disposed at the second end. The main body further includes an internal thread section and an external thread section, with the internal thread section disposed at the first end and the external thread section disposed at the second end. The plurality of first positioning portions are disposed on the... The second end, and the plurality of first positioning portions are located between the external thread section and the internal thread section in the axial direction; the number of the at least one first through hole is a plurality of the plurality of first through holes, which are arranged at equal angular intervals; the number of the at least one second through hole is a plurality of the plurality of second through holes, which are arranged at equal angular intervals; at least one of the plurality of first teeth is the first stop portion; when the sliding sleeve is in the blocking position, a sealing ring is located between the plurality of first through holes and the plurality of second through holes in the axial direction.

[0016] The beneficial effects of this utility model are as follows: The airflow switch device of this utility model can quickly block or connect the first pipe and the second pipe through the axial movement of the sliding sleeve, and can maintain the position of the sliding sleeve through the positioning structure, so as to improve the stability and reliability of operation. Attached Figure Description

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0018] Figure 2 for Figure 1 The exploded diagram.

[0019] Figure 3 for Figure 1 A cross-sectional view of the sliding sleeve in the blocking position.

[0020] Figure 4This is a cross-sectional view of the sliding sleeve in the communicating and positioning positions according to an embodiment of the present invention.

[0021] Figure 5 This is a cross-sectional view showing that the first positioning part and the second positioning part are misaligned in the axial direction according to an embodiment of the present invention.

[0022] Figure 6 This is a cross-sectional view of the first positioning part and the second positioning part of an embodiment of the present invention, arranged in an interference-blocking configuration along the axial direction.

[0023] Figure 7 This is an exploded view of another embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram showing the sliding sleeve moving from the release position to the positioning position according to another embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the sliding sleeve in the positioning position according to another embodiment of the present invention.

[0026] 1,1A: Main Body

[0027] 11: First Pipeline

[0028] 12: Second Pipeline

[0029] 13: Block

[0030] 14: First through hole

[0031] 15: Second through hole

[0032] 16: First end

[0033] 17: Second end

[0034] 18: Internal thread section

[0035] 19: External thread section

[0036] 2,2A: Sliding sleeve

[0037] 21: Connected Space

[0038] 3: Sealing ring

[0039] 4: Positioning Structure

[0040] 41, 41A: First positioning part

[0041] 42: First tooth

[0042] 43: Arc segment

[0043] 44: Positioning recess

[0044] 45, 45A: Second positioning part

[0045] 46: Second tooth

[0046] 47: Bump

[0047] 51: First stop section

[0048] 52: Second stop section

[0049] 53: Third stop section

[0050] 61: Axial

[0051] 62: Radial

[0052] 63: Zhou Xiang

[0053] 7: First direction Detailed Implementation

[0054] The following examples illustrate possible implementations of this utility model, but are not intended to limit the scope of protection of this utility model. The prefixes "a" or "at least one" before the terms mentioned herein are not intended to limit the quantity. Depending on the requirements, there may also be "multiple" items. This variation in quantity is also within the scope of protection, and is therefore stated in advance.

[0055] Please refer to Figures 1 to 6 This shows an embodiment of the present invention. The airflow switch device of the present invention includes: a main body 1, a sliding sleeve 2 and a positioning structure 4.

[0056] The main body 1 defines an axial direction 61 and a radial direction 62. The main body 1 includes a first pipe 11, a second pipe 12, a stop 13, at least one first through hole 14, and at least one second through hole 15. The stop 13 is transversely disposed between the first pipe 11 and the second pipe 12 to block the direct communication between the first pipe 11 and the second pipe 12 in the axial direction 61. The at least one first through hole 14 extends along the radial direction 62 and connects to the first pipe 11. The at least one second through hole 15 extends along the radial direction 62 and connects to the second pipe 12.

[0057] In this embodiment, the main body 1 includes a first end 16 and a second end 17 opposite to each other. The first pipe 11 is disposed at the first end 16, and the second pipe 12 is disposed at the second end 17. Furthermore, the main body 1 also includes an internal thread section 18 and an external thread section 19. The internal thread section 18 is disposed at the first end 16, and the external thread section 19 is disposed at the second end 17. Users can connect other devices through the internal thread section 18 and the external thread section 19. The different configurations of the internal thread section 18 and the external thread section 19 facilitate users to quickly identify the connection direction. For example, the internal thread section 18 is used to connect with a pneumatic source, and the external thread section 19 is used to connect with the device to be driven. Furthermore, there are multiple first through holes 14, which are arranged at equal angular intervals, allowing airflow to flow evenly and omnidirectionally through the main body 1. Similarly, there are multiple second through holes 15, which are arranged at equal angular intervals.

[0058] The sliding sleeve 2 is movable along the axis 61 and rotatably fitted onto the main body 1 with the main body 1 as its axis. The sliding sleeve 2 and the main body 1 together define a communicating space 21. When the sliding sleeve 2 moves along the axis 61 to a blocking position, the communicating space 21 only connects to the plurality of first through holes 14, and the first pipe 11 and the second pipe 12 remain in a state of non-communication. Airflow cannot flow from the first pipe 11 to the second pipe 12, so the device to be driven cannot operate. When the sliding sleeve 2 moves along the axis 61 to a communicating position, the communicating space 21 connects the plurality of first through holes 14 and the plurality of second through holes 15, and the first pipe 11 and the second pipe 12 become interconnected. Airflow can flow from the first pipe 11 to the second pipe 12 to drive the device to be driven. As can be seen from the above, the device to be driven can be started or stopped by sliding the sleeve 2 on the axis 61. It is very convenient, intuitive and quick to operate, and is very suitable as a master switch to connect the gas source and multiple devices to be driven.

[0059] Preferably, the airflow switch device further includes two sealing rings 3, which are disposed on the inner wall surface of the sliding sleeve 2 and move in tandem. The two sealing rings 3 are located on opposite sides of the communicating space 21 along the axial direction 61, and each sealing ring 3 abuts against the outer wall surface of the main body 1 to ensure that the communicating space 21 is a closed space. In this embodiment, when the sliding sleeve 2 is in the blocking position, one of the sealing rings 3 is located between the plurality of first through holes 14 and the plurality of second through holes 15 along the axial direction 61, and the sealing ring 3 can effectively block unintended communication.

[0060] The positioning structure 4 includes at least one first positioning part 41 and at least one second positioning part 45. The at least one first positioning part 41 protrudes from the outer wall surface of the main body 1, and the at least one second positioning part 45 protrudes from the inner wall surface of the sliding sleeve 2. When the sliding sleeve 2 rotates about the main body 1 to a positioning position, the at least one first positioning part 41 and the at least one second positioning part 45 are mutually interfered and blocked in the axial direction 61. When the sliding sleeve 2 rotates about the main body 1 to a release position, the at least one first positioning part 41 and the at least one second positioning part 45 are misaligned in the axial direction 61. As can be seen from the above, the positioning structure 4 can strengthen the positioning of the sliding sleeve 2 to prevent the sliding sleeve 2 from moving unintentionally along the axial direction 61, which would cause the driven device to start or stop unexpectedly.

[0061] More specifically, the main body 1 is further defined with a circumferential direction 63, and the number of at least one first positioning part 41 is multiple. The multiple first positioning parts 41 are disposed at the second end 17, and the multiple first positioning parts 41 are located between the external thread section 19 and the internal thread section 18 in the axial direction 61. More specifically, the multiple first positioning parts 41 are spaced apart in the circumferential direction 63, so that the at least one second positioning part 45 can move along the axial direction 61 to the space between any two adjacent first positioning parts 41; similarly, the number of at least one second positioning part 45 is multiple, and the multiple second positioning parts 45 are spaced apart in the circumferential direction 63, so that the first positioning part 41 can move through the space between any two adjacent second positioning parts 45 along the axial direction 61.

[0062] In this embodiment, each of the first positioning portions 41 includes a plurality of first teeth 42 arranged along the axial direction 61, and each of the second positioning portions 45 includes a plurality of second teeth 46 arranged along the axial direction 61. When the sliding sleeve 2 moves along the axial direction 61 to make the plurality of first teeth 42 and the plurality of second teeth 46 correspond on the circumferential direction 63, the user can rotate the sliding sleeve 2 to make the plurality of first teeth 42 enter the tooth grooves of the plurality of second teeth 46 along the circumferential direction 63. Then, when the sliding sleeve 2 rotates to the positioning position, the plurality of first teeth 42 and the plurality of second teeth 46 mesh with each other to stably position the sliding sleeve 2. The design of the plurality of first teeth 42 and the plurality of second teeth 46 can increase the contact area and achieve the purpose of dispersing stress.

[0063] Preferably, the positioning structure 4 further includes at least one first stop portion 51 and at least one second stop portion 52. The at least one first stop portion 51 protrudes from the main body 1, and the at least one second stop portion 52 protrudes from the sliding sleeve 2. When the sliding sleeve 2 is in the communicating position and rotates along a first direction 7 to switch from the release position to the positioning position, the at least one first stop portion 51 and the at least one second stop portion 52 mutually block and interfere with each other in the first direction 7, preventing the sliding sleeve 2 from rotating further along the first direction 7, thus informing the user that it has been rotated to the correct position. In this embodiment, at least one of the plurality of first teeth 42 is the first stop portion 51.

[0064] Please refer to further information. Figures 7 to 9 Another embodiment differs from this embodiment in that: one of the at least one first positioning part 41A and the at least one second positioning part 45A is a spirally extending arc segment 43 and the other is a protrusion 47. This design structure allows the sliding sleeve 2A to move along the axis 61 during the rotation process.

[0065] Preferably, a positioning recess 44 is recessed in the arc segment 43. When the sliding sleeve 2A rotates to the positioning position, part of the protrusion 47 is accommodated in the positioning recess 44 to position the protrusion 47 so that it will not move arbitrarily.

[0066] At least one first positioning part 41A is provided on the main body 1A, at least one second positioning part 45A is provided on the sliding sleeve 2A, and at least one third stop part 53 protrudes from the inner wall surface of the sliding sleeve 2A. When the sliding sleeve 2A rotates along a first direction 7 from the release position to the positioning position, the at least one first positioning part 41A and the at least one third stop part 53 abut against each other on the axis 61, so that the sliding sleeve 2A can no longer rotate along the first direction 7, so that the user knows that it has been rotated into place.

Claims

1. An airflow switching device, characterized in that: include: A main body is defined with an axial direction and a radial direction, including a first pipe, a second pipe, a stop, at least a first through hole, and at least a second through hole. The stop is transversely disposed between the first pipe and the second pipe to block the direct communication between the first pipe and the second pipe in the axial direction. The at least one first through hole extends radially and communicates with the first pipe. The at least one second through hole extends radially and communicates with the second pipe. A sliding sleeve, movable along the axial direction and rotatable around the main body, is fitted onto the main body. The sliding sleeve and the main body together define a communicating space. When the sliding sleeve moves along the axial direction to a blocking position, the communicating space only connects to the at least one first through hole, and the first pipe and the second pipe remain in a non-communicating state. When the sliding sleeve moves along the axial direction to a communicating position, the communicating space connects the at least one first through hole and the at least one second through hole, thereby making the first pipe and the second pipe mutually connected. A positioning structure includes at least one first positioning part and at least one second positioning part. The at least one first positioning part protrudes from the outer wall surface of the main body, and the at least one second positioning part protrudes from the inner wall surface of the sliding sleeve. When the sliding sleeve rotates about the main body as an axis to a positioning position, the at least one first positioning part and the at least one second positioning part are mutually interfered and blocked in the axial direction. When the sliding sleeve rotates about the main body as an axis to a release position, the at least one first positioning part and the at least one second positioning part are misaligned in the axial direction.

2. The airflow switch device as described in claim 1, characterized in that: The main body is further defined in a circumferential direction, and the number of the at least one first positioning part is multiple. The multiple first positioning parts are arranged at intervals in the circumferential direction, and the at least one second positioning part can move along the axial direction to the space between any two adjacent first positioning parts.

3. The airflow switch device as described in claim 1, characterized in that: The positioning structure further includes at least one first stop and at least one second stop. The at least one first stop protrudes from the main body, and the at least one second stop protrudes from the sliding sleeve. When the sliding sleeve is in the communicating position and rotates along a first direction to switch the positioning position from the release position, the at least one first stop and the at least one second stop interfere with each other in the first direction, preventing the sliding sleeve from rotating along the first direction.

4. The airflow switch device as described in claim 1, characterized in that: The main body is further defined in a circumferential direction, and the number of the at least one second positioning part is multiple. The multiple second positioning parts are arranged at intervals in the circumferential direction, so that the at least one first positioning part can move through the space between any two adjacent second positioning parts along the axial direction.

5. The airflow switch device as described in claim 1, characterized in that: It also includes two sealing rings, which are disposed on the inner wall surface of the sliding sleeve and move in tandem. The two sealing rings are located on opposite sides of the communicating space in the axial direction, and each sealing ring abuts against the outer wall surface of the main body.

6. The airflow switching device according to any one of claims 1 to 5, characterized in that: The main body is further defined in a circumferential direction, the at least one first positioning part includes a plurality of first teeth arranged along the axial direction, and the at least one second positioning part includes a plurality of second teeth arranged along the axial direction. When the sliding sleeve rotates to the positioning position, the plurality of first teeth and the plurality of second teeth mesh with each other.

7. The airflow switch device as claimed in claim 1, characterized in that: One of the at least one first positioning part and the at least one second positioning part is a spirally extending arc segment, and the other is a protrusion.

8. The airflow switching device as described in claim 7, characterized in that: A positioning recess is provided in the arc segment. When the sliding sleeve rotates to the positioning position, part of the protrusion is accommodated in the positioning recess.

9. The airflow switching device as described in claim 7, characterized in that: At least one first positioning part is provided on the main body, at least one second positioning part is provided on the sliding sleeve, and at least one third stop part protrudes from the inner wall surface of the sliding sleeve. When the sliding sleeve rotates along a first direction from the release position to the positioning position, the at least one first positioning part and the at least one third stop part abut against each other in the axial direction, so that the sliding sleeve can no longer rotate along the first direction.

10. The airflow switching device as described in claim 2, characterized in that: The positioning structure further includes at least one first stop and at least one second stop. The at least one first stop protrudes from the main body, and the at least one second stop protrudes from the sliding sleeve. When the sliding sleeve is in the communicating position and rotates along a first direction to switch the positioning position from the release position, the at least one first stop and the at least one second stop interfere with each other in the first direction, preventing the sliding sleeve from rotating along the first direction. The main body further defines a circumferential direction, and the number of the at least one second positioning part is multiple. The multiple second positioning parts are spaced apart in the circumferential direction, so that each first positioning part can move through the space between any two adjacent second positioning parts along the axial direction. The airflow switch device further includes two sealing rings. The two sealing rings are disposed on the inner wall surface of the sliding sleeve and move in tandem. The two sealing rings are located on opposite sides of the communicating space in the axial direction, and each sealing ring abuts against the outer wall surface of the main body. Each first positioning part includes a multiple first teeth arranged along the axial direction. Each of the second positioning portions includes a plurality of second teeth arranged along the axial direction. When the sliding sleeve rotates to the positioning position, the plurality of first teeth and the plurality of second teeth mesh with each other. The main body includes a first end and a second end opposite to each other, with a first conduit disposed at the first end and a second conduit disposed at the second end. The main body further includes an internal thread section and an external thread section, with the internal thread section disposed at the first end and the external thread section disposed at the second end. The plurality of first positioning portions are disposed on the... The second end, and the plurality of first positioning portions are located between the external thread section and the internal thread section in the axial direction; the number of the at least one first through hole is a plurality of the plurality of first through holes, which are arranged at equal angular intervals; the number of the at least one second through hole is a plurality of the plurality of second through holes, which are arranged at equal angular intervals; at least one of the plurality of first teeth is the first stop portion; when the sliding sleeve is in the blocking position, a sealing ring is located between the plurality of first through holes and the plurality of second through holes in the axial direction.

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