Rotary gas distribution structure and gas distribution system

Abstract

The utility model relates to the technical field of gas distribution, and discloses a rotary type gas distribution structure and a gas distribution system.The rotary type gas distribution structure comprises a fixed part and a rotary part, the fixed part is provided with a first mounting hole, a first through hole and a second through hole which communicate with the first mounting hole are formed in the circumferential wall of the fixed part in the radial direction of the fixed part, and a second through hole is formed in the circumferential wall of the fixed part in the axial direction of the fixed part; the first through hole and the second through hole are spaced, the first through hole and the second through hole are staggered in the circumferential direction of the fixed part, part of the rotating part is rotatably arranged in the first mounting hole in the axial direction of the rotating part, the outer circumferential surface of the rotating part located in the first mounting hole is attached to the hole wall of the first mounting hole, and the rotating part is provided with a gas channel; the rotating part is further provided with a first air hole, a second air hole and a third air hole which are communicated with the air channel, and when the rotating part rotates relative to the fixed part, the first air hole is intermittently communicated with the first through hole, and the second air hole is intermittently communicated with the second through hole. Intermittent distribution of vacuum and compressed gas is achieved, the structure is simple, and cost is low.

Description

Technical Field

[0001] This application relates to the field of gas distribution technology, and in particular to a rotary gas distribution structure and gas distribution system. Background Technology

[0002] Currently, when labeling products, the label paper needs to be picked up and put down at a specified time and rhythm. For example, vacuum adsorption is used to pick up the paper, and compressed air is used to blow it off and put it down. This requires air mixing within a certain time or rhythm.

[0003] In related technologies, solenoid valves are typically used to control the switching between vacuum and compressed gas. This not only reduces the utilization rate of vacuum and compressed gas, but also results in high cost and complex structure for solenoid valve control. Utility Model Content

[0004] This application provides a rotary gas distribution structure and system. By rotating the rotating component relative to the fixed component, intermittent gas distribution of vacuum and compressed gas can be achieved, which not only improves the utilization rate of vacuum and compressed gas, but also has a simple structure and low cost.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide a rotary valve distribution structure, including:

[0007] The fastener has a ring structure and surrounds a first mounting hole. Along the radial direction of the fastener, the peripheral wall of the fastener has a first through hole and a second through hole that communicate with the first mounting hole.

[0008] A rotating component, along its axial direction, is rotatably disposed in a first mounting hole, and the outer peripheral surface of the rotating component located in the first mounting hole is in contact with the hole wall of the first mounting hole. The rotating component has a gas channel, and the rotating component also has a first air hole, a second air hole and a third air hole that are all connected to the gas channel. Along the axial direction of the rotating component, the first air hole and the second air hole are arranged alternately on the peripheral wall of the rotating component, and the first air hole and the second air hole are both located in the first mounting hole. The third air hole is located on the end face of one side of the rotating component.

[0009] Along the axial direction of the fixing member, the first through hole and the second through hole are spaced apart. Along the circumferential direction of the fixing member, the first through hole and the second through hole are staggered. Along the circumferential direction of the rotating member, the size of the first vent and the size of the second vent are both smaller than the staggered distance between the first through hole and the second through hole. When the rotating member rotates relative to the fixing member, the first vent selectively faces the first through hole so that the first vent and the first through hole are intermittently connected. The second vent selectively faces the second through hole so that the second vent and the second through hole are intermittently connected.

[0010] According to the rotary gas distribution structure proposed in the first aspect of this application, the intermittent gas distribution of vacuum and compressed gas can be achieved by rotating the rotating part relative to the fixed part. This not only improves the utilization rate of vacuum and compressed gas, but also has a simple structure and low cost.

[0011] Optionally, there are multiple gas channels, and the multiple gas channels are arranged sequentially at intervals along the circumference of the rotating component.

[0012] There are multiple first vents, multiple second vents and multiple third vents, and each of the multiple first vents, multiple second vents and multiple third vents is set to correspond one-to-one with multiple gas channels;

[0013] Along the circumference of the rotating component, multiple first air holes are arranged at intervals, multiple second air holes are arranged at intervals, and multiple third air holes are arranged at intervals.

[0014] Optionally, it further includes: a first sealing element, wherein the wall of the first mounting hole has a first sealing groove, and along the axial direction of the fixing element, at least one first sealing groove is provided on each side of the first through hole, and at least one first sealing groove is provided on each side of the second through hole, and the first sealing element is disposed in the first sealing groove.

[0015] Optionally, it further includes: a base, the base being an annular structure and surrounding a second mounting hole, a fastener being fixed in the second mounting hole, and the outer peripheral surface of the fastener being in contact with the hole wall of the second mounting hole; along the radial direction of the base, the peripheral wall of the base has a third through hole and a fourth through hole communicating with the second mounting hole, at least a portion of the first through hole communicating with the third through hole, and at least a portion of the second through hole communicating with the fourth through hole.

[0016] Optionally, it further includes: a second sealing element, wherein the outer peripheral surface of the fixing element has a second sealing groove, and along the axial direction of the fixing element, at least one second sealing groove is provided on each side of the first through hole, and at least one second sealing groove is provided on each side of the second through hole, and the second sealing element is disposed in the second sealing groove.

[0017] Optionally, it also includes: a flange, the flange including a flange body and a first annular protrusion, along the axial direction of the base, the flange body is fixed to the end face of the base away from the third vent, and the first annular protrusion is inserted into the second mounting hole;

[0018] Along the axial direction of the fastener, the end face of the fastener near the first annular protrusion has a first snap-fit ​​protrusion, the first annular protrusion has a first snap-fit ​​groove that mates with the first snap-fit ​​protrusion, and the first snap-fit ​​protrusion snaps into the first snap-fit ​​groove.

[0019] Optionally, it further includes: a cover plate, the cover plate including a cover plate body and a second annular protrusion, along the axial direction of the base, the cover plate body is fixed to the end face of the base near the third air hole, the cover plate body has a clearance hole, the second annular protrusion surrounds the clearance hole, when the rotating part rotates relative to the fixed part, the third air hole forms a virtual annular area, wherein, along the axial direction of the base, the virtual annular area is arranged opposite to the clearance hole, and the second annular protrusion is inserted into the second mounting hole.

[0020] Optionally, along the axial direction of the fastener, the end face of the fastener near the second annular protrusion has a second snap-fit ​​protrusion, the second annular protrusion has a second snap-fit ​​groove that mates with the second snap-fit ​​protrusion, and the second snap-fit ​​protrusion snaps into the second snap-fit ​​groove.

[0021] Optionally, it further includes: a bearing housing, which is abutted between the flange and the rotating component along the radial direction of the rotating component, and / or, which is abutted between the cover plate and the rotating component along the radial direction of the rotating component.

[0022] Secondly, embodiments of this application provide a gas distribution system, including the rotary gas distribution structure in the first aspect embodiment.

[0023] According to the gas distribution system proposed in the second aspect of this application, by providing the above-mentioned rotary gas distribution structure, the intermittent gas distribution of vacuum and compressed gas can be realized by rotating the rotating part relative to the fixed part. This not only improves the utilization rate of vacuum and compressed gas, but also has a simple structure and low cost. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 An exploded view of a rotary valve distribution structure provided in one embodiment of this application;

[0026] Figure 2 This is an assembly diagram of a rotary valve distribution structure provided in one embodiment of this application;

[0027] Figure 3 This is a front view of a rotary valve distribution structure provided in one embodiment of this application;

[0028] Figure 4 yes Figure 3 Sectional view at point AA;

[0029] Figure 5A schematic diagram of a fastener provided in one embodiment of this application;

[0030] Figure 6 yes Figure 5 Sectional view at point BB;

[0031] Figure 7 yes Figure 5 Sectional view at point CC.

[0032] [Explanation of Labels in the Attached Image]

[0033] Rotary valve distribution structure 100;

[0034] Fastener 1; First mounting hole 11; First sealing groove 111; First through hole 12; Second through hole 13; Second sealing groove 14; First snap-fit ​​protrusion 15; Second snap-fit ​​protrusion 16;

[0035] Rotating component 2; Gas channel 21; First vent 22; Second vent 23; Third vent 24;

[0036] First sealing element 3;

[0037] Base 4; Second mounting hole 41; Third through hole 42; Fourth through hole 43;

[0038] Second sealing element 5;

[0039] Flange 6; Flange body 61; First annular protrusion 62; First snap-fit ​​groove 621;

[0040] Cover plate 7; Cover plate body 71; Clearance hole 711; Second annular protrusion 72; Second snap-fit ​​groove 721;

[0041] Bearing housing 8;

[0042] Connector 9;

[0043] 10 screws. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0046] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0049] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0050] It should be noted that currently, when labeling products, the label paper needs to be picked up and put down at a specified time and rhythm. For example, vacuum adsorption is used to pick up the paper, and compressed air is used to blow it off and put it down. This requires air mixing within a certain time or rhythm.

[0051] In related technologies, solenoid valves are typically used to control the switching between vacuum and compressed gas. This not only reduces the utilization rate of vacuum and compressed gas, but also results in high cost and complex structure for solenoid valve control.

[0052] Based on this, this application proposes a rotary gas distribution structure 100 and a gas distribution system. By rotating the rotating component 2 relative to the fixed component 1, intermittent gas distribution of vacuum and compressed gas can be achieved, which not only improves the utilization rate of vacuum and compressed gas, but also has a simple structure and low cost.

[0053] The rotary gas distribution structure 100 and gas distribution system proposed in this application are described below with reference to the accompanying drawings.

[0054] like Figures 1-7 As shown, the rotary gas distribution structure 100 according to the first aspect embodiment of this application includes: a fixing member 1 and a rotating member 2. The fixing member 1 is constructed as an annular structure and surrounds a first mounting hole 11. Along the radial direction of the fixing member 1, the peripheral wall of the fixing member 1 has a first through hole 12 and a second through hole 13 communicating with the first mounting hole 11. Along the axial direction of the rotating member 2, a portion of the rotating member 2 is rotatably disposed within the first mounting hole 11, and the outer peripheral surface of the rotating member 2 located within the first mounting hole 11 is in contact with the hole wall of the first mounting hole 11. The rotating member 2 has a gas channel 21, and the rotating member 2 also has a first air hole 22, a second air hole 23 and a third air hole 24 communicating with the gas channel 21. Along the axial direction of the rotating member 2, the first air hole 22 and the second air hole 23 are sequentially spaced apart. The circumferential wall of the rotating component 2 has a first air hole 22 and a second air hole 23 located within the first mounting hole 11, and a third air hole 24 located on one end face of the rotating component 2. Along the axial direction of the fixing component 1, the first through hole 12 and the second through hole 13 are spaced apart. Along the circumferential direction of the fixing component 1, the first through hole 12 and the second through hole 13 are offset. Along the circumferential direction of the rotating component 2, the size of the first air hole 22 and the size of the second air hole 23 are both smaller than the offset distance between the first through hole 12 and the second through hole 13. When the rotating component 2 rotates relative to the fixing component 1, the first air hole 22 is selectively opposite to the first through hole 12 so that the first air hole 22 and the first through hole 12 are intermittently connected. The second air hole 23 is selectively opposite to the second through hole 13 so that the second air hole 23 and the second through hole 13 are intermittently connected.

[0055] Specifically, such as Figure 1 and Figure 5 As shown, the fastener 1 is constructed as a ring, that is, the fastener 1 is circular in shape. Along the radial direction of the fastener 1, the central region of the fastener 1 encloses the first mounting hole 11. Further, as... Figure 6 and Figure 7 As shown, along the radial direction of the fastener 1, the peripheral wall of the fastener 1 is provided with a first through hole 12 and a second through hole 13. It can be understood that the first through hole 12 and the second through hole 13 are both constructed as through holes so that the first through hole 12 and the second through hole 13 are connected to the first mounting hole 11.

[0056] like Figure 1As shown, the rotating member 2 is constructed as a cylindrical structure, and along the axial direction of the rotating member 2, a portion of the rotating member 2 is rotatably disposed within the first mounting hole 11. For example, along the axial direction of the rotating member 2, one end of the rotating member 2 may be disposed within the first mounting hole 11, and the other end may extend out of the first mounting hole 11, or, as... Figure 4 As shown, along the axial direction of the rotating member 2, the middle region of the rotating member 2 is disposed within the first mounting hole 11, and both ends of the rotating member 2 extend out of the first mounting hole 11. Simultaneously, the portion of the rotating member 2 located within the first mounting hole 11 is rotatable relative to the fixed member 1. Specifically, as shown... Figure 2 and Figure 3 As shown, along the axial direction of the rotating component 2, the rotating component 2 has connecting holes symmetrically arranged with respect to the center of symmetry. The rotating component 2 is fixedly connected to the output shaft of the motor through the connecting holes. When the output shaft of the motor rotates, the motor drives the rotating component 2 to rotate along the axial direction of the rotating component 2.

[0057] It should be noted that the outer peripheral surface of the rotating part 2 located in the first mounting hole 11 is in contact with the hole wall of the first mounting hole 11. That is to say, the rotating part 2 must ensure that the outer peripheral surface of the rotating part 2 located in the first mounting hole 11 is in contact with the hole wall of the first mounting hole 11, and also ensure that the part of the rotating part 2 located in the first mounting hole 11 can rotate relative to the fixed part 1. For example, the outer peripheral surface of the rotating part 2 and the hole wall of the first mounting hole 11 can be configured as a clearance fit. With this setting, the rotating part 2 and the fixed part 1 can rotate relative to each other, and the outer peripheral surface of the rotating part 2 located in the first mounting hole 11 is in contact with the hole wall of the first mounting hole 11.

[0058] The rotating component 2 has an internal gas channel 21, and also has a first vent 22, a second vent 23, and a third vent 24 that are all connected to the gas channel 21. For example... Figure 1 and Figure 4 As shown, along the axial direction of the rotating component 2, the first air hole 22 and the second air hole 23 are sequentially and spaced apart on the peripheral wall of the rotating component 2. This arrangement ensures that the line connecting the center of the first air hole 22 and the center of the second air hole 23 is parallel to the axial direction of the rotating component 2. After the rotating component 2 and the fixing component 1 are assembled, the first air hole 22 and the second air hole 23 are both located within the first mounting hole 11. Furthermore, along the axial direction of the rotating component 2, the third air hole 24 is located on one end face of the rotating component 2. Preferably, as shown... Figure 4 As shown, the third vent 24 is located on one end face outside the first mounting hole 11.

[0059] like Figures 5-7As shown, along the axial direction of the fastener 1, the first through hole 12 and the second through hole 13 are spaced apart. Along the circumferential direction of the fastener 1, the first through hole 12 and the second through hole 13 are offset. That is, along the axial direction of the fastener 1, the first through hole 12 and the second through hole 13 are not in the same plane, and along the circumferential direction of the fastener 1, the first through hole 12 and the second through hole 13 are offset by a certain distance. For example, the first through hole 12 can be constructed as a first waist-shaped hole, and the second through hole 13 can be constructed as a second waist-shaped hole. Along the circumferential direction of the fastener 1, the first waist-shaped hole has a first end and a second end, and the second waist-shaped hole has a third end and a fourth end. The first end is close to the third end, and along the circumferential direction of the fastener 1, the first end and the third end are offset, and a first offset distance is formed between the first end and the third end. Similarly, the second end is close to the fourth end, and along the circumferential direction of the fastener 1, the second end and the fourth end are offset, and a second offset distance is formed between the second end and the fourth end.

[0060] Furthermore, along the circumference of the rotating component 2, the dimensions of the first vent 22 and the second vent 23 are both smaller than the offset distance between the first through hole 12 and the second through hole 13. For example, assuming that the first vent 22 and the second vent 23 are both constructed as circular holes, then along the circumference of the rotating component 2, the diameters of the first vent 22 and the second vent 23 are both smaller than the first offset distance between the first end and the third end, and also smaller than the second offset distance between the second end and the fourth end.

[0061] It is understandable that, such as Figure 1 As shown, the first vent 22 and the second vent 23 are both disposed on the peripheral wall of the rotating member 2 located within the first mounting hole 11, and along the axial direction of the fixing member 1. At least a portion of the first through hole 12 is in the same plane as the first vent 22, and at least a portion of the second through hole 13 is in the same plane as the second vent 23. With this arrangement, when the rotating member 2 rotates relative to the fixing member 1, the first vent 22 selectively aligns with the first through hole 12, and when the first vent 22 aligns with the first through hole 12, the first vent 22 communicates with the first through hole 12. When the first vent 22 is not opposite to the first through hole 12, the first vent 22 is not connected to the first through hole 12, thus achieving intermittent connection between the first vent 22 and the first through hole 12. Similarly, when the rotating member 2 rotates relative to the fixed member 1, the second vent 23 is also selectively opposite to the second through hole 13. When the second vent 23 is opposite to the second through hole 13, the second vent 23 is connected to the second through hole 13. When the second vent 23 is not opposite to the second through hole 13, the second vent 23 is not connected to the second through hole 13, thus achieving intermittent connection between the second vent 23 and the second through hole 13.

[0062] Furthermore, to enable those skilled in the art to better understand this solution, as a specific example, this application uses the first through hole 12 for conveying compressed gas, the second through hole 13 for vacuuming, and the third air hole 24 connected to the gas pipeline of the external labeling device via connector 9 for illustration. The compressed gas conveyed by the first through hole 12 is uninterrupted, and the vacuuming by the second through hole 13 is also uninterrupted. As the rotating component 2 rotates relative to the fixed component 1, when the rotating component 2 rotates to the point where the first air hole 22 is opposite to the first through hole 12, the first air hole 22 connects with the first through hole 12, and the first through hole 12 conveys compressed gas to the first air hole 22. Simultaneously, due to the axial direction of the first air hole 22 and the second air hole 23... The spaced-out arrangement, along the circumference of the rotating component 2, ensures that the size of the first air hole 22 and the second air hole 23 are smaller than the offset distance between the first through hole 12 and the second through hole 13. This ensures that when the first air hole 22 is connected to the first through hole 12, the second air hole 23 is not connected to the second through hole 13. Furthermore, since the outer circumferential surface of the rotating component 2 located inside the first mounting hole 11 is in contact with the hole wall of the first mounting hole 11, the second air hole 23 will also be sealed by the hole wall of the first mounting hole 11. Moreover, the compressed gas supplied from the first through hole 12 to the first air hole 22 will not leak much. With this arrangement, the compressed gas input into the first air hole 22 flows out through the gas channel 21 inside the rotating component 2 from the third air hole 24, thereby realizing the blowing off and releasing of paper by the external labeling device.

[0063] Similarly, when the rotating component 2 rotates to the point where the second vent 23 is opposite to the second through hole 13, the second vent 23 communicates with the second through hole 13, and the second through hole 13 is evacuated through the second vent 23. Simultaneously, since the first vent 22 and the second vent 23 are spaced apart along the axial direction of the rotating component 2, and along the circumference of the rotating component 2, the dimensions of the first vent 22 and the second vent 23 are both smaller than the offset distance between the first through hole 12 and the second through hole 13, it is ensured that when the second vent 23 communicates with the second through hole 13, the first vent 23... The air hole 22 is not connected to the first through hole 12, and since the outer peripheral surface of the rotating part 2 located in the first mounting hole 11 is in contact with the hole wall of the first mounting hole 11, the first air hole 22 will also be sealed by the hole wall of the first mounting hole 11. Furthermore, the second through hole 13 will not leak when vacuuming through the second air hole 23. With this configuration, the second through hole 13 can sequentially draw vacuum from the pipe of the external labeling device through the second air hole 23, the gas channel 21, and the third air hole 24, thereby realizing the vacuum adsorption and paper removal of the external labeling device.

[0064] Therefore, as the rotating component 2 continues to rotate, the intermittent distribution of vacuum and compressed gas in the rotary gas distribution structure 100 is achieved through the coordinated use of the first through hole 12, the second through hole 13, the first air hole 22, and the second air hole 23. The compressed gas delivered by the first through hole 12 can be uninterrupted, and the vacuuming by the second through hole 13 can also be uninterrupted. Compared with using a solenoid valve to control the switching of vacuum and compressed gas, the utilization rate of vacuum and compressed gas is greatly improved. Moreover, the rotary gas distribution structure 100 is relatively compact, which is conducive to reducing costs.

[0065] In some embodiments of this application, compressed gas can also be delivered through the second through hole 13 while the first through hole 12 is used for vacuuming. For specific implementation details, please refer to the above description, which will not be repeated here. Therefore, when compressed gas is delivered through the first air hole 22 and the second through hole 13 is used for vacuuming, along the circumferential direction of the fixing member 1, such as... Figure 6 and Figure 7 As shown, since the vacuum adsorption time of the external labeling device is usually longer than the blowing time of the paper, the extension length of the second through hole 13 is longer than the extension length of the first through hole 12. When the second air hole 23 is used to deliver compressed gas and the first through hole 12 is used to draw a vacuum, the extension length of the first through hole 12 is longer than the extension length of the second through hole 13 along the circumference of the fixing member 1. At the same time, since the extension lengths of the second through hole 13 and the first through hole 12 are fixed, the production cycle can be easily controlled by adjusting the rotation speed of the rotating member 2.

[0066] In some embodiments of this application, such as Figures 1-4 As shown, there are multiple gas channels 21, and the multiple gas channels 21 are arranged sequentially at intervals along the circumference of the rotating member 2. There are multiple first air holes 22, multiple second air holes 23 and multiple third air holes 24, and each of the multiple first air holes 22, multiple second air holes 23 and multiple third air holes 24 is arranged in a one-to-one correspondence with the multiple gas channels 21. Among them, along the circumference of the rotating member 2, the multiple first air holes 22 are arranged sequentially at intervals, the multiple second air holes 23 are arranged sequentially at intervals, and the multiple third air holes 24 are arranged sequentially at intervals.

[0067] Specifically, such as Figures 1-4As shown, the rotating component 2 has four gas channels 21, which are arranged sequentially at intervals along the circumference of the rotating component 2. It can be understood that the four gas channels 21 are not interconnected. Furthermore, the rotating component 2 also has four first air holes 22, four second air holes 23, and four third air holes 24. Each gas channel 21 corresponds to one first air hole 22, one second air hole 23, and one third air hole 24. Along the circumference of the rotating component 2, the four first air holes 22 are all located on the peripheral wall of the rotating component 2 and are arranged sequentially at intervals. Along the circumference of the rotating component 2, the four second air holes 23 are all located on the peripheral wall of the rotating component 2 and are arranged sequentially at intervals. Along the circumference of the rotating component 2, the four third air holes 24 are located on one end face of the rotating component 2 and are arranged sequentially at intervals.

[0068] Furthermore, as described above, along the circumference of the rotating member 2, the dimensions of the first vent 22 and the second vent 23 are both smaller than the offset distance between the first through hole 12 and the second through hole 13. This application continues to illustrate with the example of the first through hole 12 being used to transport compressed gas, the second through hole 13 being used to evacuate, and the third vent 24 being connected to the gas pipeline of the external labeling device through the connector 9. When the rotating member 2 rotates relative to the fixed member 1, the first vent 22 corresponding to each gas channel 21 is selectively opposite to the first through hole 12, so that the first vent 22 and the first through hole 12 are intermittently connected. The second vent 23 corresponding to each gas channel 21 is selectively opposite to the second through hole 13, so that the second vent 23 and the second through hole 13 are intermittently connected. In this way, each gas channel 21 can realize the intermittent distribution of vacuum and compressed gas, thereby greatly improving the gas distribution efficiency of the rotary gas distribution structure 100.

[0069] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, it also includes: a first sealing member 3, the hole wall of the first mounting hole 11 has a first sealing groove 111, and along the axial direction of the fixing member 1, at least one first sealing groove 111 is provided on each side of the first through hole 12, and at least one first sealing groove 111 is provided on each side of the second through hole 13, and the first sealing member 3 is provided in the first sealing groove 111.

[0070] Specifically, in order to improve the sealing performance between the rotating part 2 located in the first mounting hole 11 and the first mounting hole 11, a first sealing element 3 is provided between the outer peripheral surface of the rotating part 2 located in the first mounting hole 11 and the hole wall of the first mounting hole 11, such as... Figure 1 and Figure 4As shown, the wall of the first mounting hole 11 is provided with a first sealing groove 111, and along the axial direction of the fixing member 1, at least one first sealing groove 111 is provided on each side of the first through hole 12, and at least one first sealing groove 111 is provided on each side of the second through hole 13. A first sealing element 3 is provided in the first sealing groove 111. The first sealing element 3 can be constructed as a sealing ring or as a Glyd ring. With this configuration, when the first through hole 12 delivers compressed air or the second through hole 13 draws a vacuum, it can further prevent the compressed air or the drawn air from leaking from the gap between the outer peripheral surface of the rotating member 2 and the wall of the first mounting hole 11. At the same time, it can also further prevent the phenomenon of air leakage between the first through hole 12 and the second through hole 13, which is beneficial to improving the sealing performance of the rotary air distribution structure 100 during air distribution.

[0071] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, it also includes: a base 4, which is constructed as an annular structure and surrounds a second mounting hole 41. A fastener 1 is fixed in the second mounting hole 41, and the outer peripheral surface of the fastener 1 is in contact with the hole wall of the second mounting hole 41. Along the radial direction of the base 4, the peripheral wall of the base 4 has a third through hole 42 and a fourth through hole 43 that communicate with the second mounting hole 41. At least a portion of the first through hole 12 communicates with the third through hole 42, and at least a portion of the second through hole 13 communicates with the fourth through hole 43.

[0072] Specifically, the base 4 is constructed as a ring, meaning that the base 4 is entirely circular. Along the radial direction of the base 4, the central region of the base 4 encloses a second mounting hole 41. Further, as... Figure 1 and Figure 4 As shown, along the radial direction of the base 4, the peripheral wall of the base 4 is provided with a third through hole 42 and a fourth through hole 43. It can be understood that the third through hole 42 and the fourth through hole 43 are both constructed as through holes so that the third through hole 42 and the fourth through hole 43 are connected to the second mounting hole 41.

[0073] For example, suppose the third through hole 42 is connected to an external pipeline for supplying compressed gas via connector 9, and the fourth through hole 43 is connected to an external pipeline for evacuation via connector 9. Since at least a portion of the first through hole 12 is connected to the third through hole 42, and at least a portion of the second through hole 13 is connected to the fourth through hole 43, and the outer peripheral surface of the fastener 1 is in contact with the wall of the second mounting hole 41, for example, the contact structure between the outer peripheral surface of the fastener 1 and the wall of the second mounting hole 41 is a transition fit or an interference fit. In this way, the first through hole 12 can supply compressed gas and the second through hole 13 can evacuate, and the gap between the first through hole 12 and the second through hole 13 through the gap between the outer peripheral surface of the fastener 1 and the wall of the second mounting hole 41 can be avoided.

[0074] It is understandable that, assuming the third through hole 42 is connected to the external vacuuming pipeline through connector 9, and the fourth through hole 43 is connected to the external compressed gas delivery pipeline through connector 9, the second through hole 13 can deliver compressed gas and the first through hole 12 can be vacuumed, which will not be elaborated here.

[0075] In some embodiments of this application, the second sealing member 5 is further included. The outer peripheral surface of the fixing member 1 has a second sealing groove 14, and along the axial direction of the fixing member 1, at least one second sealing groove 14 is provided on both sides of the first through hole 12, and at least one second sealing groove 14 is provided on both sides of the second through hole 13. The second sealing member 5 is disposed in the second sealing groove 14.

[0076] Specifically, in order to improve the sealing performance between the fixing member 1 and the second mounting hole 41, a second sealing member 5 is provided between the outer peripheral surface of the fixing member 1 and the hole wall of the second mounting hole 41, such as... Figure 1 and Figure 4 As shown, the outer peripheral surface of the fixing member 1 has a second sealing groove 14, and along the axial direction of the fixing member 1, at least one second sealing groove 14 is provided on each side of the first through hole 12, and at least one second sealing groove 14 is provided on each side of the second through hole 13. A second sealing element 5 is provided in the second sealing groove 14. The second sealing element 5 can be constructed as a sealing ring or as a Glyd ring. With this configuration, when the third through hole 42 supplies compressed air to the first through hole 12 or the fourth through hole 43 draws a vacuum through the second through hole 13, it can further prevent the compressed air or the drawn air from leaking from the gap between the outer peripheral surface of the fixing member 1 and the hole wall of the second mounting hole 41. At the same time, it also further prevents the phenomenon of air leakage between the first through hole 12 and the second through hole 13, which is beneficial to improving the sealing performance of the rotary air distribution structure 100 during air distribution.

[0077] In some embodiments of this application, such as Figures 1-4 As shown, it also includes: a flange 6, which includes a flange body 61 and a first annular protrusion 62. Along the axial direction of the base 4, the flange body 61 is fixed to the end face of the base 4 on the side away from the third air hole 24. The first annular protrusion 62 is inserted into the second mounting hole 41. Along the axial direction of the fastener 1, the end face of the fastener 1 near the first annular protrusion 62 has a first snap-fit ​​protrusion 15. The first annular protrusion 62 has a first snap-fit ​​groove 621 that mates with the first snap-fit ​​protrusion 15. The first snap-fit ​​protrusion 15 snaps into the first snap-fit ​​groove 621.

[0078] Specifically, such as Figure 4As shown, along the axial direction of the base 4, the flange body 61 is located on the end face of the base 4 away from the third vent 24, and the flange body 61 is fixedly connected to the base 4 by screws 10. The first annular protrusion 62 protrudes towards the second mounting hole 41, and the outer peripheral surface of the first annular protrusion 62 fits against the hole wall of the second mounting hole 41, thereby realizing the insertion and engagement of the first annular protrusion 62 and the second mounting hole 41. At the same time, along the axial direction of the fixing member 1, the end of the fixing member 1 near the first annular protrusion 62... The first mounting part 62 has a first snap-fit ​​protrusion 15 protruding outwards, and a first snap-fit ​​groove 621 that mates with the first snap-fit ​​protrusion 15. It can be understood that the first snap-fit ​​groove 621 is constructed as an arc-shaped groove. When the first annular protrusion 62 is inserted into the second mounting hole 41, the first snap-fit ​​protrusion 15 snaps into the first snap-fit ​​groove 621. This arrangement realizes the snap-fit ​​fixation between the fastener 1 and the flange 6, thereby preventing mutual rotation between the fastener 1 and the flange 6.

[0079] In some embodiments of this application, the flange body 61 is provided with an elongated hole, so that the installation angle of the flange 6 can be adjusted during installation to meet different usage requirements.

[0080] In some embodiments of this application, such as Figures 1-4 As shown, it also includes: a cover plate 7, which includes a cover plate body 71 and a second annular protrusion 72. Along the axial direction of the base 4, the cover plate body 71 is fixed to the end face of the base 4 near the third air hole 24. The cover plate body 71 has a clearance hole 711. The second annular protrusion 72 surrounds the clearance hole 711. When the rotating member 2 rotates relative to the fixed member 1, the third air hole 24 forms a virtual annular area. Along the axial direction of the base 4, the virtual annular area is opposite to the clearance hole 711. The second annular protrusion 72 is inserted into the second mounting hole 41.

[0081] Specifically, such as Figure 4As shown, along the axial direction of the base 4, the cover plate body 71 is disposed on the end face of the base 4 near the third air hole 24, and the cover plate body 71 is fixedly connected to the base 4 by screws 10. The cover plate body 71 has a clearance hole 711, and a second annular protrusion 72 surrounds the clearance hole 711. The second annular protrusion 72 protrudes towards the second mounting hole 41, and the outer peripheral surface of the second annular protrusion 72 fits against the hole wall of the second mounting hole 41, thereby realizing the insertion and engagement of the second annular protrusion 72 with the second mounting hole 41. It should be noted that when the rotating part 2 rotates relative to the fixed part 1, the third air hole 24 forms a virtual annular area. In order to reserve connection space between the third air hole 24 and the external connection pipeline, the virtual annular area is arranged opposite to the clearance hole 711 along the axial direction of the base 4. With this arrangement, the third air hole 24 can be connected to the external device through the connector 9, and when the rotating part 2 rotates, the connector 9 connected to the third air hole 24 will not interfere with the cover plate 7, thus ensuring the normal rotation of the rotating part 2.

[0082] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, along the axial direction of the fastener 1, the end face of the fastener 1 near the second annular protrusion 72 has a second snap-fit ​​protrusion 16, and the second annular protrusion 72 has a second snap-fit ​​groove 721 that is fitted and assembled with the second snap-fit ​​protrusion 16. The second snap-fit ​​protrusion 16 is snapped into the second snap-fit ​​groove 721.

[0083] Specifically, along the axial direction of the fastener 1, the end face of the fastener 1 near the second annular protrusion 72 has an outwardly protruding second snap-fit ​​protrusion 16, and the second annular protrusion 72 has a second snap-fit ​​groove 721 that mates with the second snap-fit ​​protrusion 16. It can be understood that the second snap-fit ​​groove 721 is constructed as an arc-shaped groove. When the second annular protrusion 72 is inserted into the second mounting hole 41, the second snap-fit ​​protrusion 16 snaps into the second snap-fit ​​groove 721. In this way, the fastener 1 and the cover plate 7 are snapped together, thereby preventing mutual rotation between the fastener 1 and the cover plate 7.

[0084] In some embodiments of this application, such as Figure 1 and Figure 4 As shown, it also includes: a bearing housing 8, which is installed abutting between the flange 6 and the rotating part 2 along the radial direction of the rotating part 2, and / or, which is installed abutting between the cover plate 7 and the rotating part 2 along the radial direction of the rotating part 2.

[0085] Specifically, when one end of the rotating part 2 is disposed within the first mounting hole 11 and the other end extends out of the first mounting hole 11, and the portion of the rotating part 2 extending out of the first mounting hole 11 along the axial direction of the rotating part 2 is located between the flange 6 and the rotating part 2, then a bearing seat 8 is abutted between the flange 6 and the rotating part 2 along the radial direction of the rotating part 2. Alternatively, when one end of the rotating part 2 is disposed within the first mounting hole 11 and the other end extends out of the first mounting hole 11, and the portion of the rotating part 2 extending out of the first mounting hole 11 along the axial direction of the rotating part 2 is located between the cover plate 7 and the rotating part 2, then along the radial direction of the rotating part 2... A bearing seat 8 is installed radially between the cover plate 7 and the rotating part 2, or, along the axial direction of the rotating part 2, the middle area of ​​the rotating part 2 is located in the first mounting hole 11, and both ends of the rotating part 2 extend out of the first mounting hole 11. In this configuration, the bearing seat 8 is installed radially between the flange 6 and the rotating part 2, and also between the cover plate 7 and the rotating part 2. This configuration helps to reduce wear when the rotating part 2 rotates relative to the fixed part 1, thereby improving the service life of the rotary valve distribution structure 100.

[0086] The gas distribution system according to a second aspect of this application includes the rotary gas distribution structure 100 of the first aspect embodiment.

[0087] According to the gas distribution system proposed in the second aspect of this application, by providing the above-mentioned rotary gas distribution structure 100, the rotation of the rotating member 2 relative to the fixed member 1 can realize the intermittent gas distribution of vacuum and compressed gas, which not only improves the utilization rate of vacuum and compressed gas, but also has a simple structure and low cost.

[0088] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0089] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0090] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0091] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A rotary valve distribution structure, characterized in that, include: The fastener is constructed as an annular structure and surrounds a first mounting hole. Along the radial direction of the fastener, the peripheral wall of the fastener has a first through hole and a second through hole communicating with the first mounting hole. A rotating component, along its axial direction, is partially rotatably disposed within the first mounting hole, and the outer peripheral surface of the rotating component located within the first mounting hole is in contact with the hole wall of the first mounting hole. The rotating component has a gas channel, and the rotating component also has a first air hole, a second air hole, and a third air hole that are all connected to the gas channel. Along the axial direction of the rotating component, the first air hole and the second air hole are sequentially spaced on the peripheral wall of the rotating component, and the first air hole and the second air hole are both located within the first mounting hole. The third air hole is located on the end face of one side of the rotating component. Along the axial direction of the fixing member, the first through hole and the second through hole are spaced apart. Along the circumferential direction of the fixing member, the first through hole and the second through hole are offset. Along the circumferential direction of the rotating member, the size of the first air hole and the size of the second air hole are both smaller than the offset distance between the first through hole and the second through hole. When the rotating member rotates relative to the fixing member, the first air hole is selectively opposite to the first through hole so that the first air hole and the first through hole are intermittently connected. The second air hole is selectively opposite to the second through hole so that the second air hole and the second through hole are intermittently connected.

2. The rotary valve distribution structure according to claim 1, characterized in that, There are multiple gas channels, and the multiple gas channels are arranged sequentially at intervals along the circumference of the rotating component; There are multiple first air holes, multiple second air holes, and multiple third air holes, and each of the multiple first air holes, multiple second air holes, and multiple third air holes is provided in a one-to-one correspondence with a multiple gas channel; Along the circumference of the rotating component, a plurality of first air holes are arranged at intervals, a plurality of second air holes are arranged at intervals, and a plurality of third air holes are arranged at intervals.

3. The rotary valve distribution structure according to claim 1, characterized in that, Also includes: The first sealing element has a first sealing groove in the wall of the first mounting hole, and at least one first sealing groove is provided on each side of the first through hole along the axial direction of the fixing element, and at least one first sealing groove is provided on each side of the second through hole, and the first sealing element is disposed in the first sealing groove.

4. The rotary valve distribution structure according to claim 1, characterized in that, Also includes: The base is constructed as an annular structure and surrounds a second mounting hole. The fastener is fixed in the second mounting hole, and the outer peripheral surface of the fastener is in contact with the hole wall of the second mounting hole. Along the radial direction of the base, the peripheral wall of the base has a third through hole and a fourth through hole communicating with the second mounting hole. At least a portion of the first through hole communicates with the third through hole, and at least a portion of the second through hole communicates with the fourth through hole.

5. The rotary valve distribution structure according to claim 4, characterized in that, Also includes: The second sealing element has a second sealing groove on the outer peripheral surface of the fixing element, and at least one second sealing groove is provided on each side of the first through hole along the axial direction of the fixing element, and at least one second sealing groove is provided on each side of the second through hole, and the second sealing element is disposed in the second sealing groove.

6. The rotary valve distribution structure according to claim 4, characterized in that, Also includes: A flange, comprising a flange body and a first annular protrusion, wherein along the axial direction of the base, the flange body is fixed to the end face of the base away from the third vent, and the first annular protrusion is inserted into the second mounting hole; Along the axial direction of the fastener, the end face of the fastener near the first annular protrusion has a first snap-fit ​​protrusion, the first annular protrusion has a first snap-fit ​​groove that mates with the first snap-fit ​​protrusion, and the first snap-fit ​​protrusion snaps into the first snap-fit ​​groove.

7. The rotary valve distribution structure according to claim 6, characterized in that, Also includes: A cover plate, comprising a cover plate body and a second annular protrusion, is fixed to the end face of the base near the third air hole along the axial direction of the base. The cover plate body has a clearance hole, and the second annular protrusion surrounds the clearance hole. When the rotating member rotates relative to the fixed member, the third air hole forms a virtual annular area, wherein the virtual annular area is disposed opposite to the clearance hole along the axial direction of the base, and the second annular protrusion is inserted into the second mounting hole.

8. The rotary valve distribution structure according to claim 7, characterized in that, Along the axial direction of the fastener, the end face of the fastener near the second annular protrusion has a second snap-fit ​​protrusion, the second annular protrusion has a second snap-fit ​​groove that mates with the second snap-fit ​​protrusion, and the second snap-fit ​​protrusion snaps into the second snap-fit ​​groove.

9. The rotary valve distribution structure according to claim 8, characterized in that, Also includes: A bearing housing is mounted abutting between the flange and the rotating component along the radial direction of the rotating component, and / or, along the radial direction of the rotating component, the bearing housing is mounted abutting between the cover plate and the rotating component.

10. A gas distribution system, characterized in that, Includes the rotary valve distribution structure according to any one of claims 1-9.

Images