CN213332959U - Pneumatic rotary joint - Google Patents
Pneumatic rotary joint Download PDFInfo
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- CN213332959U CN213332959U CN202021287280.6U CN202021287280U CN213332959U CN 213332959 U CN213332959 U CN 213332959U CN 202021287280 U CN202021287280 U CN 202021287280U CN 213332959 U CN213332959 U CN 213332959U
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Abstract
The utility model discloses a pneumatic rotary joint, which comprises a gas transmission part and a rotary table, wherein the gas transmission part is rotationally connected with the rotary table, and the rotary table can rotate relative to the gas transmission part; the gas conveying part comprises a plurality of mutually independent gas conveying areas, a plurality of first gas holes and a plurality of second gas holes are formed in the rotary table, and the rotary table is opposite to the gas conveying part in the rotating process, and each gas conveying area can be correspondingly communicated with the first gas holes and the second gas holes in preset quantity. The utility model discloses a pneumatic rotary joint can select different modes of breathing in or blowing according to the user demand of difference.
Description
Technical Field
The utility model relates to a pneumatic control technical field, more specifically the utility model relates to a pneumatic rotary joint that says so.
Background
The pneumatic rotary joint is a series of products specially suitable for pneumatic control equipment, has the advantages of small volume, light weight, small friction torque and the like, and is widely applied to various industries such as metallurgical machinery, papermaking machinery, building machinery, solar cell manufacturing and the like.
The conventional pneumatic rotary joint generally includes a gas transfer portion and a rotary table, in which the gas transfer portion is generally provided with a plurality of air holes communicated with a vacuum generator, and the rotary table is provided with a plurality of air holes communicated with the air holes of the transfer portion for performing suction or blowing. However, in the process of implementing the invention, the inventor finds that the following problems exist in the prior art: the existing pneumatic rotary joint only has one air suction or blowing mode, and different air suction or blowing modes can not be selected according to different use requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pneumatic rotary joint, the utility model discloses a pneumatic rotary joint can select the different modes of breathing in or blowing according to the user demand of difference.
The technical scheme is as follows:
the pneumatic rotary joint comprises a gas transmission part and a rotary table, wherein the gas transmission part is rotationally connected with the rotary table, and the rotary table can rotate relative to the gas transmission part; the gas conveying part comprises a plurality of mutually independent gas conveying areas, a plurality of first gas holes and a plurality of second gas holes are formed in the rotary table, and the rotary table is opposite to the gas conveying part in the rotating process, and each gas conveying area can be correspondingly communicated with the first gas holes and the second gas holes in preset quantity.
The gas transmission part is provided with a plurality of third gas holes and a plurality of fourth gas holes, and each gas transmission area is at least communicated with one third gas hole and one fourth gas hole.
The quantity of the first air holes and the quantity of the second air holes are eight, the eight first air holes are uniformly distributed on the outer peripheral surface of the rotary table, and the eight second air holes are uniformly distributed at the bottom of the rotary table.
The gas transmission part is arranged to be a cylindrical sleeve, the cylindrical sleeve comprises an outer wall and an inner wall, and the gas transmission parts are located between the outer wall and the inner wall respectively.
The vacuum generator is characterized in that the inner wall is provided with a plurality of fifth air holes, each gas conveying area at least corresponds to one fifth air hole, the vacuum generator is communicated with the gas conveying areas through the third air holes and the fourth air holes, the gas conveying areas are communicated with the first air holes and the second air holes in preset quantity through the fifth air holes, a plurality of airflow channels are formed between the fifth air holes and the first air holes and the second air holes in preset quantity, and each gas conveying area is correspondingly provided with at least one airflow channel.
The diameter of the airflow channel is larger than the distance between two adjacent first air holes, and/or the diameter of the airflow channel is larger than the distance between two adjacent second air holes.
And the air flow channels are sealed by oil films.
The gas delivery zones are sequentially distributed along the axial direction of the cylindrical sleeve.
The gas delivery zones are distributed in sequence along the circumference of the cylindrical sleeve.
The carousel is connected the pivot, cylindrical sleeve locates in the pivot, cylindrical sleeve with the pivot is sealed to be cooperated, the pivot drives the carousel is to relative gas delivery portion is rotatory.
The advantages or principles of the invention are explained below:
1. the utility model discloses a pneumatic rotary joint includes gaseous conveying portion and carousel, and gaseous conveying portion is equipped with mutually independent gaseous conveying district, is equipped with a plurality of first gas pockets and a plurality of second gas pocket on the carousel. When the pneumatic rotary joint works, the plurality of first air holes and the plurality of second air holes are connected with the vacuum generator through the plurality of air conveying areas of the air conveying part, and the pneumatic rotary joint performs air suction or air blowing through the plurality of first air holes or the plurality of second air holes. The utility model discloses a pneumatic rotary joint can select a plurality of first gas pockets or select a plurality of second gas pockets execution to breathe in or blow according to the effect position of difference, different user demands when using.
2. The gas transmission part is provided with a plurality of third gas holes and a plurality of fourth gas holes, and the third gas holes and the fourth gas holes are respectively connected with the vacuum generator. When the pneumatic rotary joint is used, a plurality of third air holes or a plurality of fourth air holes can be selected and used according to different use requirements.
3. The quantity in first gas pocket, second gas pocket is eight, and current pneumatic rotary joint's first gas pocket generally is twelve, the utility model discloses a reduce the quantity in first gas pocket, can effectively reduce pneumatic rotary joint's external diameter, the external diameter can be reduced to 38mm by 50 mm.
Drawings
FIG. 1 is a perspective view of the pneumatic rotary joint of the present embodiment;
FIG. 2 is another perspective view of the pneumatic rotary joint of the present embodiment;
FIG. 3 is a schematic view of a gas delivery portion in an embodiment of the present application;
FIG. 4 is a schematic view of a gas delivery unit according to another embodiment of the present application;
description of reference numerals:
1. a gas delivery section; 2. a turntable; 11. a gas delivery zone; 21. a first air hole; 22. a second air hole; 12. a third air hole; 13. a fourth air hole; 14. an outer wall; 15. an inner wall; 3. a rotating shaft; 4. and (5) sealing rings.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "center", "inner", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
The embodiment provides a pneumatic rotary joint, which is a novel transitional connection sealing device for inputting a gas medium from a static system to a dynamic rotary system, and can be used in various industries such as metallurgical machinery, rolling machinery, papermaking machinery, construction machinery and the like.
As shown in fig. 1 and fig. 2, the present embodiment discloses a pneumatic rotary joint, which includes a gas transmission part 1 and a turntable 2, wherein the gas transmission part 1 is rotatably connected to the turntable 2, and the turntable 2 is capable of rotating relative to the gas transmission part 1; the gas delivery section 1 comprises a plurality of mutually independent gas delivery zones 11. The turntable 2 is provided with a plurality of first air holes 21 and a plurality of second air holes 22, and each gas transmission area 11 can be correspondingly communicated with a preset number of first air holes 21 and second air holes 22 in the process that the turntable 2 rotates relative to the gas transmission part 1.
Wherein, the gas transmission part 1 is connected with a vacuum generator, the turntable 2 is connected with a dynamic rotation system, a gas medium is input into the turntable 2 through the gas transmission part 1, and suction force or blowing force is generated at the first air hole 21 and the second air hole 22.
In this embodiment, the number of the first air holes 21 and the number of the second air holes 22 are eight, the eight first air holes 21 are uniformly distributed on the outer peripheral surface of the turntable 2, and the eight second air holes 22 are uniformly distributed at the bottom of the turntable 2. Preferably, a preset number of the first air holes 21 are communicated with a preset number of the second air holes 22. The number of the first air holes 21 of the existing pneumatic rotary joint is generally twelve, and the outer diameter of the pneumatic rotary joint can be effectively reduced by reducing the number of the first air holes 21, wherein the outer diameter can be reduced from 50mm to 38 mm. The present embodiment can also make the pneumatic rotary joint suitable for different use requirements by reducing the hole distance between the adjacent first air holes 21.
In one embodiment, the gas transfer part 1 includes three mutually independent gas transfer areas 11, namely a first transfer area, a second transfer area and a third transfer area, the first transfer area can correspondingly communicate with three first gas holes 21 and three second gas holes 22 which are sequentially arranged, the three first gas holes 21 communicate with the three second gas holes 22, and the three first gas holes 21 and the three second gas holes 22 form a first working area. The second transfer area may be correspondingly communicated with three first air holes 21 and three second air holes 22 which are sequentially arranged, the three first air holes 21 are communicated with the three second air holes 22, and the three first air holes 21 and the three second air holes 22 form a second operation area. The third transfer area may be correspondingly communicated with two first air holes 21 and two second air holes 22 which are sequentially arranged, the two first air holes 21 are communicated with the two second air holes 22, and the two first air holes 21 and the two second air holes 22 form a third operation area.
In another embodiment, the gas delivery section 1 includes gas delivery zones 11 that are independent of each other, namely a first delivery zone, a second delivery zone, and a third delivery zone. The first conveying area can be correspondingly communicated with two first air holes 21 and two second air holes 22 which are sequentially arranged, the two first air holes 21 are communicated with the two second air holes 22, and the two first air holes 21 and the two second air holes 22 form a first operation area. The second transfer area can correspondingly communicate two first air holes 21 and two second air holes 22 which are sequentially arranged, the two first air holes 21 are communicated with the two second air holes 22, and the two first air holes 21 and the two second air holes 22 form a second operation area. The third transfer area may be correspondingly communicated with four first air holes 21 and four second air holes 22 which are sequentially arranged, the four first air holes 21 are communicated with the four second air holes 22, and the four first air holes 21 and the four second air holes 22 constitute a third operation area.
It is understood that, in other embodiments, the number of the gas transfer sections 11 and the number of the first gas holes 21 and the second gas holes 22 correspondingly connected to each of the gas transfer sections 11 can be flexibly changed according to actual production requirements.
In another embodiment, the number of the gas transmission areas 11 is four, each of the gas transmission areas 11 may correspondingly communicate with two first gas holes 21 and two second gas holes 22 which are sequentially arranged, the two first gas holes 21 communicate with the two second gas holes 22, and the two first gas holes 21 and the two second gas holes 22 form a working area.
In operation of the pneumatic rotary joint of the present embodiment, the plurality of first air holes 21 and the plurality of second air holes 22 are connected to the vacuum generator through the plurality of gas transfer sections 11 of the gas transfer part 1, and the pneumatic rotary joint performs suction or blowing through the plurality of first air holes 21 or the plurality of second air holes 22. When the pneumatic rotary joint is used, the first air hole 21 or the second air hole 22 of each operation area can be selected to suck or blow air according to different action positions and different use requirements, and the unused first air hole 21 or second air hole 22 can be blocked by a plug.
In the embodiment, the gas transmission part 1 is provided with a plurality of third gas holes 12 and a plurality of fourth gas holes 13, and each of the gas transmission regions 11 is at least communicated with one third gas hole 12 and one fourth gas hole 13.
And the third air hole 12 and the fourth air hole 13 which are communicated with the same gas conveying area 11 are communicated, and the communicated third air hole 12 and the communicated fourth air hole 13 can be correspondingly connected with the same vacuum generator, so that the number of the vacuum generators is reduced, the connecting structure of a pneumatic rotary joint is simplified, the gas consumption is greatly reduced, and the production cost is reduced.
When the pneumatic rotary joint is used, the third air hole 1212 or the fourth air hole 13 can be selected according to the use requirement, and the unused air holes can be blocked by plugs.
The gas transfer section 1 of this embodiment is provided as a cylindrical sleeve comprising an outer wall 14 and an inner wall 15, a plurality of the gas transfer zones 11 being located between the outer wall 14 and the inner wall 15, respectively. It will be understood that each of the gas transfer sections 11 is hermetically sealed, and each of the gas transfer sections 11 is hermetically connected to the turntable 2.
Furthermore, a plurality of fifth air holes are formed in the inner wall 15, each gas transfer area 11 corresponds to at least one fifth air hole, the vacuum generator is communicated with the gas transfer areas 11 through the third air holes 12 and the fourth air holes, the gas transfer areas 11 are communicated with a preset number of the first air holes 21 and the second air holes 22 through the fifth air holes, a plurality of air flow channels are formed between the fifth air holes and the preset number of the first air holes 21 and the preset number of the second air holes 22, and each gas transfer area 11 is correspondingly provided with at least one air flow channel.
Further, the air flow channel extends along the axial direction of the cylindrical sleeve, and the diameter of the air flow channel is larger than the distance between two adjacent first air holes 21, and/or the diameter of the air flow channel is larger than the distance between two adjacent second air holes 22.
Specifically, a certain distance exists between two adjacent first air holes 21 and two adjacent second air holes 22 on the rotary table 2, and the air flow channel extends along the axial direction of the cylindrical sleeve, that is, the gas medium flows into the rotary table 2 along the axial direction of the cylindrical sleeve, so that, in the process of rotating the rotary table 2, when the air flow channel is in butt joint with a part between the two first air holes 21 or the two second air holes 22, a condition that a predetermined number of the first air holes 21 or the second air holes 22 on a certain operation area are disconnected from the corresponding air paths of the gas conveying area 11 may occur, and the predetermined number of the first air holes 21 and the second air holes 22 in the operation area lose suction force or blowing force.
In view of the above problem, in this embodiment, the diameter of the airflow channel is set to be larger than the distance between two adjacent first air holes 21 or two adjacent second air holes 22, so that it is ensured that the airflow channel can be communicated with at least one air hole of the first air holes 21 and the second air holes 22 in a preset number in each working area during the rotation of the turntable 2, thereby meeting the requirements of suction force and blowing force and ensuring normal production.
Furthermore, the air flow channels are sealed through oil films, so that air leakage among the air flow channels is effectively prevented.
Further, carousel 2 is connected pivot 3, carousel 2 is connected the first end of pivot 3, cylindrical sleeve locates in the pivot 3, cylindrical sleeve with 3 sealed cooperations of pivot, 3 drives of pivot 2 to relative gas delivery portion 1 is rotatory.
It will be appreciated that the plurality of air flow passages are provided between the cylindrical sleeve and the spindle 3. Further, the fit tolerance between the cylindrical sleeve and the rotating shaft 3 is 0mm to 0.02mm, and a sealing oil film is formed between the cylindrical sleeve and the rotating shaft 3, so that sealing between the cylindrical sleeve and the rotating shaft 3 and between the air flow channels is ensured, and the rotation resistance of the rotating shaft 3 is reduced. In addition, a sealing ring 4 is embedded at the matching position of the end part of the cylindrical sleeve and the rotating shaft 3 so as to ensure the sealing of each airflow channel with the outside atmosphere.
Furthermore, a shaft head is arranged at a second end part, opposite to the first end part, of the rotating shaft 3, and the shaft head and the rotating shaft 3 are of an integrated structure. Compared with the existing rotating shaft 3 and shaft head which are connected through threads, the rotating shaft 3 and the shaft head which are integrally structured can reduce the rotating resistance of the rotating shaft 3, and realize large torque transmission.
In one embodiment of the present embodiment, as shown in fig. 3, a plurality of mutually independent gas delivery zones 11 are distributed in sequence along the axial direction of the cylindrical sleeve. Only three of the gas transfer zones 11 are illustrated and three of the gas transfer zones 11 are evenly distributed along the cylindrical sleeve. It is understood that in other embodiments, the plurality of connected independent gas transfer zones 11 is not limited to three, and each gas transfer zone 11 may be unevenly distributed along the axial direction of the cylindrical sleeve.
In another embodiment, as shown in fig. 4, a plurality of mutually independent gas transfer zones 11 are distributed in sequence along the circumference of the cylindrical sleeve. Only three gas transfer zones 11 are exemplified in fig. 4, and the three gas transfer zones 11 are evenly distributed along the axial direction of the cylindrical sleeve. It will be understood that in other embodiments, the plurality of mutually independent gas transfer zones 11 are not limited to three, and each of the gas transfer zones 11 may be unevenly distributed along the axial direction of the cylindrical sleeve.
The embodiment of the present invention is not limited to this, according to the above-mentioned content of the present invention, the common technical knowledge and the conventional means in the field are utilized, without departing from the basic technical idea of the present invention, the present invention can also make other modifications, replacements or combinations in various forms, all falling within the protection scope of the present invention.
Claims (7)
1. The pneumatic rotary joint is characterized by comprising a gas conveying part and a rotary table, wherein the gas conveying part is rotationally connected with the rotary table, and the rotary table can rotate relative to the gas conveying part; the gas conveying part comprises a plurality of mutually independent gas conveying areas, a plurality of first gas holes and a plurality of second gas holes are formed in the rotary disc, and each gas conveying area can be correspondingly communicated with a preset number of first gas holes and second gas holes in the process that the rotary disc rotates relative to the gas conveying part; the gas conveying part is provided with a plurality of third gas holes and a plurality of fourth gas holes, and each gas conveying area is at least communicated with one third gas hole and one fourth gas hole; the gas conveying part is arranged to be a cylindrical sleeve, the cylindrical sleeve comprises an outer wall and an inner wall, the gas conveying part is located between the outer wall and the inner wall, a plurality of fifth air holes are formed in the inner wall, each gas conveying part at least corresponds to one fifth air hole, a vacuum generator is communicated with the gas conveying part through the third air holes and the fourth air holes, the gas conveying part is communicated with the first air holes and the second air holes in preset quantity through the fifth air holes, a plurality of gas flow channels are formed between the fifth air holes and the first air holes and the second air holes in preset quantity, and each gas conveying part is correspondingly provided with at least one gas flow channel.
2. The pneumatic rotary joint as claimed in claim 1, wherein the number of the first air holes and the second air holes is eight, the eight first air holes are uniformly distributed on the outer circumferential surface of the rotary plate, and the eight second air holes are uniformly distributed at the bottom of the rotary plate.
3. The pneumatic rotary joint according to claim 1, wherein the diameter of the air flow passage is larger than the distance between two adjacent first air holes and/or the diameter of the air flow passage is larger than the distance between two adjacent second air holes.
4. The pneumatic rotary union of claim 3, wherein the air flow passages are sealed by an oil film.
5. A pneumatic rotary union as set forth in claim 1 wherein said gas transfer zones are sequentially distributed along the axial direction of said cylindrical sleeve.
6. A pneumatic rotary joint as set forth in claim 1 wherein said gas transfer zones are sequentially distributed along the circumference of said cylindrical sleeve.
7. The pneumatic rotary joint as claimed in claim 1, wherein said rotary plate is connected to a rotary shaft, said cylindrical sleeve is disposed on said rotary shaft, said cylindrical sleeve is in sealing engagement with said rotary shaft, and said rotary shaft drives said rotary plate to rotate relative to said gas delivery portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021287280.6U CN213332959U (en) | 2020-07-05 | 2020-07-05 | Pneumatic rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021287280.6U CN213332959U (en) | 2020-07-05 | 2020-07-05 | Pneumatic rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213332959U true CN213332959U (en) | 2021-06-01 |
Family
ID=76082898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021287280.6U Active CN213332959U (en) | 2020-07-05 | 2020-07-05 | Pneumatic rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213332959U (en) |
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2020
- 2020-07-05 CN CN202021287280.6U patent/CN213332959U/en active Active
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