Rotary air connector and sand blasting machine

Abstract

The utility model discloses a rotary air joint and a sand blasting machine. The rotary air joint comprises a first connector, a second connector, a first crimping sleeve, a second crimping sleeve and a plurality of sealing rings, one end of the first connector is communicated with an external air source, and a first abutting part is arranged on the first connector; the second connector is rotationally butted with the other end of the first connector and is provided with a second butting part; the first crimping sleeve is arranged on the first connector in a sleeving manner and is propped against the first propping part; the second crimping sleeve is arranged on the second connector in a sleeving manner and abuts against the second abutting part, and the second crimping sleeve is connected with the first crimping sleeve; the sealing ring is arranged between the first connector and the second connector; by means of the structure, the rotary air connector can be connected between the external air source and the sand blasting gun and is driven by the driving device to rotate, sand blasting operation is carried out on workpieces in the mode that the workpieces are not moved and the sand blasting gun rotates, the treatment requirements of the workpieces of different sizes are met, and very good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of sandblasting machines, in particular to a rotary air joint and a sandblasting machine. Background Art

[0002] A sandblasting machine is a mechanical cleaning device that uses gas power to transport sand particles to perform work. It has very important applications in various fields. A sandblasting machine usually includes a sandblasting tank, a gas pipeline, a sandblasting pipeline, a valve and other structures. With the improvement of the automation level of the sandblasting machine, a sandblasting machine is equipped with multiple sandblasting guns to perform sandblasting operations on different positions of the workpiece. This sandblasting machine adopts a method in which the sandblasting gun is stationary and the workpiece rotates. However, when processing some large workpieces, it is not suitable for processing large workpieces because it is impossible to rotate the large workpiece at a higher speed. Therefore, a rotating gas joint and a sandblasting machine are urgently needed to solve the above problems. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a rotary air joint and a sandblasting machine.

[0004] The technical solution adopted by an embodiment of the utility model to solve the technical problem is: a rotary gas joint, including a first connector, a second connector, a first crimping sleeve, a second crimping sleeve and a plurality of sealing rings;

[0005] One end of the first connector is connected to an external gas source and is provided with a first abutment portion;

[0006] The second connector is rotatably connected to the other end of the first connector and is provided with a second abutting portion, and air inlet grooves are formed on the first connector and the second connector;

[0007] The first crimping sleeve is sleeved on the first connector and abuts against the first abutting portion;

[0008] The second crimping sleeve is sleeved on the second connector and abuts against the second abutting portion, and the second crimping sleeve is connected to the first crimping sleeve to limit the axial movement between the first connector and the second connector;

[0009] The sealing ring is arranged between the first connecting head and the second connecting head.

[0010] As one of the preferred embodiments of the utility model, a first thrust ball bearing is arranged between the first crimping sleeve and the first connecting head, the upper retaining frame of the first thrust ball bearing abuts against the first crimping sleeve, and the lower retaining frame of the first thrust ball bearing abuts against the upper end surface of the first abutting portion.

[0011] As one of the preferred embodiments of the utility model, a second thrust ball bearing is arranged between the second crimping sleeve and the second connecting head, the upper retaining frame of the second thrust ball bearing abuts against the lower end surface of the second abutting portion, and the lower retaining frame of the second thrust ball bearing abuts against the second crimping sleeve.

[0012] As one of the preferred embodiments of the utility model, a third thrust ball bearing is arranged between the first abutting portion and the second abutting portion, the upper retaining frame of the third thrust ball bearing abuts against the lower end surface of the first abutting portion, and the lower retaining frame of the third thrust ball bearing abuts against the upper end surface of the second abutting portion.

[0013] As one of the preferred embodiments of the utility model, the first crimping sleeve is connected to the second crimping sleeve via a detachable structure.

[0014] As one of the preferred embodiments of the present utility model, the detachable structure is configured as a threaded connection structure.

[0015] As one of the preferred embodiments of the present utility model, the detachable structure is configured as a bolt connection structure.

[0016] A sandblasting machine comprises the rotary air joint.

[0017] The beneficial effects of the utility model include: a rotary air joint and a sandblasting machine, the rotary air joint comprising a first connector, a second connector, a first crimping sleeve, a second crimping sleeve and a plurality of sealing rings; one end of the first connector is connected to an external air source and a first abutting portion is arranged on it; the second connector is rotatably docked with the other end of the first connector and a second abutting portion is arranged on it, and air inlet grooves are formed on the first connector and the second connector; the first crimping sleeve is sleeved on the first connector and abuts with the first abutting portion; the second crimping sleeve is sleeved on the second connector and abuts with the second abutting portion, and the second crimping sleeve is connected to the first crimping sleeve to limit the axial movement between the first connector and the second connector; the sealing ring is arranged between the first connector and the second connector; through the above structure, the rotary air joint can be connected between the external air source and the sandblasting gun, and rotated under the drive of the driving device, so that the workpiece is sandblasted in a manner that the workpiece is stationary and the sandblasting gun rotates, thereby meeting the processing requirements of workpieces of different sizes and having very good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of a rotary gas joint;

[0020] Figure 2 A cross-sectional view of a rotary gas joint. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0025] Reference Figure 1 to Figure 2 , a rotary gas joint, comprising a first connector 10, a second connector 20, a first crimping sleeve 30, a second crimping sleeve 40 and a plurality of sealing rings 50;

[0026] One end of the first connector 10 is connected to an external gas source and a first abutting portion 11 is disposed thereon;

[0027] The second connector 20 is rotatably connected to the other end of the first connector 10 and is provided with a second abutting portion 21 . The first connector 10 and the second connector 20 are formed with an air inlet groove 60 .

[0028] The first crimping sleeve 30 is sleeved on the first connector 10 and abuts against the first abutting portion 11;

[0029] The second crimping sleeve 40 is sleeved on the second connector 20 and abuts against the second abutting portion 21. The second crimping sleeve 40 is connected to the first crimping sleeve 30 to limit the axial movement between the first connector 10 and the second connector 20.

[0030] The sealing ring 50 is disposed between the first connector 10 and the second connector 20 .

[0031] In the present invention, a rotary gas joint is connected between an external gas source and a sandblasting gun. Specifically, a rotary seat is connected to the second connector 20, and a sand distribution chamber and a gas distribution chamber connected to the air inlet groove 60 are provided on the rotary seat. The external sand source conveys sand to the sand distribution chamber, and the external gas source conveys high-pressure gas to the gas distribution chamber through the air inlet groove 60. A plurality of sandblasting guns connected to the gas distribution chamber through a first pipeline and to the sand distribution chamber through a second pipeline are installed on the rotary seat. Sand and high-pressure gas are mixed in the sandblasting gun and ejected at high speed. Furthermore, the driving device drives the second connector 20 or the rotary seat to rotate relative to the first connector 10, and the sealing ring 50 plays a sealing role to prevent gas from escaping from the gap between the first connector 10 and the second connector 20, and the first crimping sleeve 30 and the second crimping sleeve 40 cooperate with each other to limit the axial movement between the first connector 10 and the second connector 20, and prevent the two from being separated while realizing the rotation of the two. The advantage of the utility model is that: through the above structure, the rotary gas joint can be connected between the external gas source and the sandblasting gun, and rotated under the drive of the driving device, so that the workpiece is kept stationary and the sandblasting gun is rotated to perform sandblasting operation on the workpiece, which meets the processing requirements of workpieces of different sizes and has very good practicality.

[0032] In one embodiment, a first thrust ball bearing 71 is arranged between the first crimping sleeve 30 and the first connecting head 10, the upper retaining frame of the first thrust ball bearing 71 abuts against the first crimping sleeve 30, and the lower retaining frame of the first thrust ball bearing 71 abuts against the upper end surface of the first abutting portion 11; the first thrust ball bearing 71 is arranged to ensure smooth rotation between the first crimping sleeve 30 and the first connecting head 10.

[0033] In one embodiment, a second thrust ball bearing 72 is arranged between the second crimping sleeve 40 and the second connecting head 20, the upper retaining frame of the second thrust ball bearing 72 abuts against the lower end surface of the second abutting portion 21, and the lower retaining frame of the second thrust ball bearing 72 abuts against the second crimping sleeve 40; the second thrust ball bearing 72 is arranged to ensure smooth rotation between the second crimping sleeve 40 and the second connecting head 20.

[0034] In one embodiment, a third thrust ball bearing 73 is arranged between the first abutting portion 11 and the second abutting portion 21, and the upper retaining frame of the third thrust ball bearing 73 abuts against the lower end surface of the first abutting portion 11, and the lower retaining frame of the third thrust ball bearing 73 abuts against the upper end surface of the second abutting portion 21; the third thrust ball bearing 73 is arranged to ensure smoothness of rotation between the first connecting head 10 and the second connecting head 20.

[0035] The first crimping sleeve 30 is connected to the second crimping sleeve 40 via a detachable structure 80 .

[0036] As a first embodiment of the detachable structure 80 , the detachable structure 80 is configured as a threaded connection structure.

[0037] As a second embodiment of the detachable structure 80 , the detachable structure 80 is configured as a bolt connection structure.

[0038] A sandblasting machine comprises the rotary air joint.

[0039] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rotary gas joint, characterized in that: It comprises a first connector (10), a second connector (20), a first crimping sleeve (30), a second crimping sleeve (40) and a plurality of sealing rings (50); One end of the first connector (10) is in communication with an external gas source and is provided with a first abutment portion (11); The second connecting head (20) is rotatably connected to the other end of the first connecting head (10) and is provided with a second abutting portion (21); and the first connecting head (10) and the second connecting head (20) are formed with air inlet grooves (60); The first crimping sleeve (30) is sleeved on the first connector (10) and abuts against the first abutting portion (11); The second crimping sleeve (40) is sleeved on the second connector (20) and abuts against the second abutting portion (21); the second crimping sleeve (40) is connected to the first crimping sleeve (30) to limit axial movement between the first connector (10) and the second connector (20); The sealing ring (50) is arranged between the first connecting head (10) and the second connecting head (20).

2. A rotary gas joint according to claim 1, characterized in that: A first thrust ball bearing (71) is arranged between the first crimping sleeve (30) and the first connecting head (10); an upper retaining frame of the first thrust ball bearing (71) abuts against the first crimping sleeve (30); and a lower retaining frame of the first thrust ball bearing (71) abuts against the upper end surface of the first abutting portion (11).

3. A rotary gas joint according to claim 1, characterized in that: A second thrust ball bearing (72) is provided between the second crimping sleeve (40) and the second connecting head (20); an upper retaining frame of the second thrust ball bearing (72) abuts against a lower end surface of the second abutting portion (21); and a lower retaining frame of the second thrust ball bearing (72) abuts against the second crimping sleeve (40).

4. A rotary gas joint according to claim 1, characterized in that: A third thrust ball bearing (73) is provided between the first abutting portion (11) and the second abutting portion (21); an upper retaining frame of the third thrust ball bearing (73) abuts against a lower end surface of the first abutting portion (11); and a lower retaining frame of the third thrust ball bearing (73) abuts against an upper end surface of the second abutting portion (21).

5. A rotary gas joint according to claim 1, characterized in that: The first crimping sleeve (30) is connected to the second crimping sleeve (40) via a detachable structure (80).

6. A rotary gas joint according to claim 5, characterized in that: The detachable structure (80) is configured as a threaded connection structure.

7. A rotary gas joint according to claim 5, characterized in that: The detachable structure (80) is configured as a bolt connection structure.

8. A sandblasting machine, characterized in that: A rotary gas joint comprising any one of claims 1 to 7.

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