An internal sandblasting device for a quartz tube

Abstract

The present invention relates to the technical field of quartz tubes, and discloses a sandblasting device inside a quartz tube. The device includes an airbag, a sandblasting assembly, a fixed bearing plate and a driving motor. Through the mutual cooperation of the airbag, the fixed bearing plate, the driving motor and the rubber cover plate, the device can perform axial automatic sandblasting operations inside the quartz tube. After evenly sandblasting the inner wall surface of the quartz tube, it can also suck out the residues during the advancing process, ensuring that the device performs sandblasting operations in a closed space. It can make the sandblasting operations completely enclosed inside the device, preventing the sprayed abrasive from splashing everywhere and polluting the working environment. Through the mutual cooperation of the fixed bearing plate, the internal suction pipe and the external suction pipe, it can suck out the residues during the sandblasting process, ensuring uniform sandblasting quality of each part of the quartz tube, improving the sandblasting quality and recovering the abrasive, and reducing the abrasive cost.

Description

Technical Field

[0001] The present invention relates to the technical field of quartz tubes, and specifically to a sandblasting device inside a quartz tube. Background Art

[0002] The sandblasting device inside a quartz tube plays an important role in industrial production. It is mainly used to spray sand grains inside the quartz tube to remove dirt, residues, or change the surface characteristics of the quartz tube. The quartz tube is a material with excellent high-temperature resistance, corrosion resistance, and good light transmittance, and is widely used in the fields of chemical industry, optoelectronics, electronics, etc. However, during use, dirt or residues are likely to accumulate inside the quartz tube, affecting its performance and service life. Therefore, in order to clean and improve the internal state of the quartz tube, people began to develop sandblasting devices inside the quartz tube. Initially, the sandblasting device inside the quartz tube adopted traditional pneumatic sandblasting technology, and removed dirt by spraying particulate matter with sand grains in a high-speed air flow inside the quartz tube. However, this method has some problems, such as being prone to secondary pollution and difficult to control the sand grains. With the continuous progress of technology, the sandblasting device inside the quartz tube has gradually adopted more efficient and precise sandblasting technologies. For example, by combining compressed air and magnetron sputtering technology, a uniform and regular sand grain distribution can be formed inside the quartz tube, improving the cleaning effect. The introduction of laser sandblasting technology has further improved the control accuracy and efficiency of sandblasting. In addition, with the development of automation technology, the sandblasting device inside the quartz tube has also achieved fully automated production, improving production efficiency and consistency. At the same time, the structure and materials of the device have also been improved to adapt to quartz tubes of different sizes and shapes.

[0003] For traditional sandblasting devices inside quartz tubes, traditional pneumatic sandblasting technology is adopted, and dirt is removed by spraying particulate matter with sand grains in a high-speed air flow inside the quartz tube. There are the following problems with this sandblasting method: First, this sandblasting method works in a relatively open space, and the high-speed ejected abrasive is very easy to diffuse in the surrounding space, polluting the working environment; second, in this sandblasting method, after the quartz tube is placed horizontally, sandblasting is carried out inside it, which will cause the ejected sand and removed impurities to deposit at the bottom of the quartz tube. When sandblasting the bottom of the quartz tube, due to the influence of residues, the sandblasting quality will be reduced and the sandblasting effect will be poor; finally, the traditional sandblasting device for quartz tubes lacks the recycling of sandblasting, reducing the utilization rate of the abrasive and increasing the sandblasting cost. Summary of the Invention

[0004] (1) Technical problem to be solved: In view of the deficiencies of the prior art, the present invention provides a sandblasting device for the interior of a quartz tube, which has the advantages of enabling the sandblasting operation to be carried out in a relatively enclosed space, preventing the ejected abrasive from scattering everywhere and polluting the working environment; during the sandblasting process, cleaning the residues deposited at the bottom of the quartz tube, improving the sandblasting quality of this part of the quartz tube, recovering the abrasive, and reducing the sandblasting cost, and solving the problems that the traditional sandblasting method will cause the abrasive to fly everywhere and pollute the working environment; when sandblasting the bottom of the quartz tube, due to the deposition of residues, the sandblasting effect is poor, the ejected abrasive cannot be recovered, and the sandblasting cost is high.

[0005] (2) Technical solution: To achieve the above-mentioned purpose of enabling the sandblasting operation to be carried out in a relatively enclosed space, preventing the ejected abrasive from scattering everywhere and polluting the working environment, and during the sandblasting process, cleaning the residues deposited at the bottom of the quartz tube, improving the sandblasting quality of this part of the quartz tube, recovering the ejected abrasive, and reducing the sandblasting cost, the present invention provides the following technical solution: A sandblasting device for the interior of a quartz tube, comprising an airbag, a sandblasting assembly, and a fixed bearing plate.

[0006] The sandblasting assembly includes a central turntable. Feed pipes and drive shafts are respectively processed at both ends of the central turntable. Fixed bearing plates are fixedly installed at both ends of the feed pipe and the drive shaft. A drive motor is installed at one end of the drive shaft, and the drive shaft is fixedly connected to the motor shaft.

[0007] A motor mounting seat is installed on the outer contour of the fixed bearing plate. The motor mounting seat is connected to the fixed bearing plate through a cylindrical bearing. A rolling motor is installed on the motor mounting seat. A suction hole is processed on the fixed bearing plate. An internal suction pipe is installed at one end of the suction hole close to the sandblasting assembly, and an external suction pipe is installed at the other end. An installation hole is processed at the central position of the fixed bearing plate, and the feed pipe and the drive shaft are fixedly installed in the installation hole.

[0008] When not installed, the airbag is in a sealed circular ring shape. When the airbag is installed on the fixed bearing plate, the cross-section of the airbag is in a crescent shape with the interior compressed inward. Two annular rolling rings are installed inside the airbag. The two annular rolling rings are respectively located in the downward protrusions of the crescent shape of the airbag. The concave part of the airbag is installed around the outer contour of the fixed bearing plate. The annular rolling rings are respectively buckled on both sides of the fixed bearing plate, pressing the airbag tightly on the rolling motor, and the non-notch part of the airbag is closely attached to the inner wall of the quartz tube to be sandblasted.

[0009] Preferably, the internal suction pipe is a bent hollow pipe and is installed in the suction hole by means of threads. The external suction pipe includes a main pipe and a four-way pipe. The branch pipes are installed in the suction hole by pressing, and threads are processed on the inner surface of the outer port of the main pipe.

[0010] Preferably, threaded holes are machined on the outer contour of the central turntable. The sandblasting head is fixedly connected to the central assembly by threads. The sand inlet pipe is communicated with the sand distribution pipe, and the sand distribution pipe is communicated with the threaded holes.

[0011] Preferably, there is a bend at the end of the sand inlet pipe. The bend is located in the airspace of the external suction pipe, and threads are machined inside the bend.

[0012] Preferably, the rolling motor is radially installed on the motor mounting seat.

[0013] Preferably, bumps for increasing friction are machined on the surface of the rolling motor, and the rolling motors are interlinked with each other.

[0014] Preferably, a rubber cover plate is installed on the surface of the fixed bearing plate located outside.

[0015] Preferably, the airbag can be inflated manually or by an automatic inflation device.

[0016] (III) Beneficial effects: Compared with the prior art, the present invention provides a sandblasting device for the inside of a quartz tube, having the following beneficial effects:

[0017] 1. For this sandblasting device for the inside of a quartz tube, through the combined use of the airbag, the fixed bearing plate and the rubber cover plate. When sandblasting the inside of the quartz tube is required, the device is placed inside the quartz tube, the airbag is filled with gas, so that the device is tightened inside the quartz tube by the airbag, and then the pipes of each part are connected to perform sandblasting operations. At this time, due to the air-filled airbags at both ends of the device and the rubber cover plate installed on the fixed bearing plate, the sandblasting operation can be completely enclosed inside the device, and the sprayed abrasive will not fly everywhere, polluting the working environment.

[0018] 2. For this sandblasting device for the inside of a quartz tube, through the combined use of the fixed bearing plate, the internal suction pipe and the external suction pipe. During the sandblasting process, the sprayed abrasive and the removed impurities will deposit at the bottom of the quartz tube, resulting in a problem that when sandblasting the bottom of the quartz tube, due to the presence of the deposition layer, the sandblasting effect on this part of the quartz tube is worse than that on other parts of the quartz tube. For this reason, during the slow advancement of the device, the rotating internal suction pipe sucks out the residues deposited at the bottom, and then the external suction pipe is used for subsequent treatment. It can achieve sucking out the residues during the sandblasting process, ensuring uniform sandblasting quality for each part of the quartz tube and improving the sandblasting quality.

[0019] 3. This internal sandblasting device for quartz tubes uses the internal and external suction pipes in cooperation to suck out the residues deposited at the bottom of the quartz tube, and then through subsequent separation operations, realizes the recycling of the abrasive sand. It achieves the effect of recycling the abrasive sand and reducing the sandblasting cost. Description of the Drawings

[0020] Figure 1 Schematic diagram of the suction end structure of this internal sandblasting device for quartz tubes;

[0021] Figure 2 Schematic diagram of the drive end structure of this internal sandblasting device for quartz tubes;

[0022] Figure 3 Schematic diagram of the sandblasting component structure of this internal sandblasting device for quartz tubes;

[0023] Figure 4 Schematic diagram of the fixed bearing plate structure of this internal sandblasting device for quartz tubes;

[0024] Figure 5 Schematic diagram of the installation structure of the fixed bearing plate of this internal sandblasting device for quartz tubes;

[0025] Figure 6 Schematic diagram of the airbag structure of this internal sandblasting device for quartz tubes;

[0026] Figure 7 Cross-sectional view of the airbag of this internal sandblasting device for quartz tubes;

[0027] Figure 8 Schematic diagram of the installation and discharge end structure of the airbag and the fixed bearing plate of this internal sandblasting device for quartz tubes;

[0028] Figure 9 Schematic diagram of the installation and suction end structure of the airbag and the fixed bearing plate of this internal sandblasting device for quartz tubes;

[0029] Figure 10 Cross-sectional view of the installation of the airbag and the fixed bearing plate of this internal sandblasting device for quartz tubes;

[0030] Figure 11 Radial cross-sectional view of the installation of the airbag and the rolling motor of this internal sandblasting device for quartz tubes;

[0031] Figure 12 Schematic diagram of the movement state of this internal sandblasting device for quartz tubes;

[0032] Figure 13 Schematic diagram of the rubber cover plate of this internal sandblasting device for quartz tubes.

[0033] In the figure: 1 airbag, 11 annular rolling ring, 2 sandblasting assembly, 21 sandblasting head, 22 central turntable, 221 sand inlet pipe, 222 drive shaft, 223 threaded hole, 224 sand distribution pipe, 3 fixed bearing plate, 31 motor mounting seat, 32 rolling motor, 33 material suction hole, 34 internal material suction pipe, 35 external material suction pipe, 351 main pipe, 352 branch pipe, 36 mounting hole, 4 rubber cover plate, 5 quartz tube to be sandblasted, 6 drive motor. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-3, A sandblasting device inside a quartz tube, comprising an airbag 1, a sandblasting assembly 2 and a fixed bearing plate 3. The main function of the airbag 1 is to create a closed environment inside the quartz tube to store and control the sand grains ejected by the sandblasting assembly 2. The fixed bearing plate 3 is connected to the sand inlet pipe 221 and the drive shaft 222, and the other end is connected to the drive motor 6. Its main role is to provide stable support and guidance to maintain the stable rotation of the drive shaft 222, and at the same time effectively transmit the power of the drive motor 6 to the drive shaft 222. The sandblasting assembly 2 includes a central turntable 22. The two ends of the central turntable 22 are respectively processed with a sand inlet pipe 221 and a drive shaft 222. Fixed bearing plates 3 are fixedly installed at both ends of the sand inlet pipe 221 and the drive shaft 222. A drive motor 6 is installed at one end of the drive shaft 222, and the drive shaft 222 is fixedly connected to the motor shaft. This fixed connection realizes the synchronous rotation of the drive shaft 222 and the motor shaft. When the motor shaft rotates, through this fixed connection, the drive shaft 222 will also rotate accordingly, thereby driving the central turntable 22 to rotate, that is, the rotary sandblasting operation on the inner wall surface of the quartz tube 5 to be sandblasted can be realized. The sandblasting assembly 2 consists of a central turntable 22. The two ends of the central turntable 22 are respectively processed with a sand inlet pipe 221 and a drive shaft 222. The sand inlet pipe 221 is responsible for introducing the sand grains into the central turntable 22, and the drive shaft 222 drives the central turntable 22 to rotate. The design of the central turntable 22 can evenly eject the introduced sand grains on the inner wall of the quartz tube. The main function of this sandblasting device inside the quartz tube is to drive the central turntable 22 to rotate through the motor, and evenly spray the sand grains on the inner wall surface of the quartz tube to achieve the purpose of cleaning, polishing and other treatments on the inner surface of the quartz tube. This design can make the operation simpler and more efficient, and at the same time reduce the damage to the surface of the quartz tube. The internal suction pipe 34 is a bent hollow pipe, which is installed in the suction hole 33 by thread. The external suction pipe 35 includes a main pipe 351 and a four-way pipe 352. The four-way pipe 352 is installed in the suction hole 33 by pressing. The inner surface of the outer port of the main pipe 351 is processed with threads. The main role of the internal suction pipe 34 is to suck out the residues inside the device. Its bent hollow design can increase the fluidity of the sand and gravel and improve the suction efficiency. Through the threaded installation, the tight connection between the suction pipe and other components is ensured. The external suction pipe 35 includes a main pipe 351 and a four-way pipe 352. The operator can install the external suction pipe 35 on the fixed bearing plate 3 by pressing the four-way pipe 352. The design of the main pipe 351 can prevent the winding of each pipeline during the rotation process and achieve a better suction purpose. Threaded holes 223 are processed on the outer contour of the central turntable 22. The sandblasting head 21 is fixedly connected to the central assembly by thread. The sand inlet pipe 221 is communicated with the sand distribution pipe 224, and the sand distribution pipe 224 is mutually communicated with the threaded hole 223. The central turntable 22 is connected to the sandblasting head 21 through the threaded hole 223, which can make the sandblasting head 21 rotate on the central turntable 22 to realize all-round sandblasting treatment.The sandblasting head 21 is fixedly connected to the central component through threads and ejects sand and gravel to achieve the purpose of sand and gravel treatment. The sand inlet pipe 221 is communicated with the sand distributing pipe 224, so that sand and gravel can be transported from the sand inlet pipe 221 to the sand distributing pipe 224, and then the sand and gravel are sandblasted on the quartz tube 5 to be sandblasted through the sandblasting head 21 via the sand distributing pipe 224. One end of the sand inlet pipe 221 has a bend, which is located in the airspace of the external suction pipe 35, and threads are machined inside the bend. The end of the sand inlet pipe 221 has a bend design, which can better adapt to the structural requirements of the equipment and effectively prevent the blockage of sand and gravel in the pipeline. Threads are machined inside the bend, and during installation, the external sandblasting pipe can be installed on it through threads for sandblasting, which is convenient for installation.

[0036] Please refer to Figures 4-5 , a motor mounting seat 31 is installed on the outer contour of the fixed bearing plate 3, and the motor mounting seat 31 is connected to the fixed bearing plate 3 through a cylindrical bearing. In this structure, the motor mounting seat 31 is connected to the fixed bearing plate 3 through a cylindrical bearing. The cylindrical bearing serves as a medium, enabling the motor mounting seat 31 and the fixed bearing plate 3 to rotate relative to each other while providing stable support. This design can make the rotation of the drive shaft 222 more stable and avoid jamming caused by load changes. A rolling motor 32 is installed on the motor mounting seat 31. The rolling motor 32 installed on the motor mounting seat 31 is a small motor that can provide powerful power. A suction hole 33 is machined on the fixed bearing plate 3. An internal suction pipe 34 is installed at one end of the suction hole 33 close to the sandblasting component 2, and an external suction pipe 35 is installed at the other end. Four suction holes 33 are machined on the fixed bearing plate 3. An internal suction pipe 34 is installed at one end of the suction hole 33 close to the sandblasting component 2, and an external suction pipe 35 is installed at the other end. This structure can effectively suck out the residues deposited at the bottom of the quartz tube from the inside of the device and then transport them to the outside of the device through the external suction pipe 35 for subsequent treatment. In this way, during the slow advancement of the device, the residues deposited at the bottom can be sucked out through the rotating internal suction pipe 34 and then undergo subsequent treatment through the external suction pipe 35. It can achieve sucking out the residues during the sandblasting process, ensuring uniform sandblasting quality for all parts of the quartz tube and improving the sandblasting quality. An installation hole 36 is machined at the central position of the fixed bearing plate 3, and the sand inlet pipe 221 and the drive shaft 222 are fixedly installed in the installation hole 36. An installation hole 36 is machined at the central position of the fixed bearing plate 3, and the sand inlet pipe 221 and the drive shaft 222 are fixedly installed on the fixed bearing plate 3 through this installation hole 36. This design improves the stability of the device and simplifies the assembly process.

[0037] Please refer to Figures 6-12, when the airbag 1 is not installed on the fixed bearing plate 3, the shape of the airbag 1 is a sealed circular ring. When the airbag is installed on the fixed bearing plate 3, the cross-section of the airbag 1 will be in the shape of a crescent moon with the inside compressed inward due to the radial compression of the fixed bearing plate 3. The cross-section of the airbag 1 being in the shape of a crescent moon with the inside compressed inward can provide a stronger squeezing effect. The airbag 1 at the notch position can wrap the fixed bearing plate 3 in the middle of the airbag 1, and the airbag 1 at the non-notch position can tightly adhere to the inner wall of the quartz tube 5 to be sandblasted, enabling the device to be fully tightened inside the quartz tube 5 to be sandblasted for sandblasting operations and also forming a sealed space, which is beneficial to the adsorption and collection of sand. Its material is usually made of high-elasticity, high-pressure-resistant rubber or silica gel to ensure airtightness and durability. Two annular rolling rings 11 are installed inside the airbag 1, and the two annular rolling rings 11 are respectively located in the downward protrusions of the crescent moon shape of the airbag 1. The material of the annular rolling ring 11 is usually metal or hard plastic, which can provide strong support and friction to prevent the airbag 1 from sliding or shifting during the sandblasting process, and the annular rolling ring 11 can provide support for the rolling of the airbag 1 inside the quartz tube 5 to be sandblasted, ensuring the stable rolling of the airbag 1. The concave part of the airbag 1 is installed around the outer contour of the fixed bearing plate 3, and the annular rolling rings 11 are respectively buckled on both sides of the fixed bearing plate 3, pressing the airbag 1 tightly on the rolling motor 32. The non-notch part of the airbag 1 closely adheres to the inner wall of the quartz tube 5 to be sandblasted. The notch of the airbag 1 fits on the surface of the rolling motor 32. When the device needs to move inside the quartz tube 5 to be sandblasted, the rolling motor 32 is turned on. Since the notch part of the airbag 1 tightly fits on the surface of the rolling motor 32, a large frictional force will be generated between the rolling motor 32 and the airbag 1. When the rolling motor 32 rotates, because the rolling motor 32 is radially installed, when the rolling motor 32 rotates, the protrusions on the surface will have a huge frictional force with the airbag 1 pressed on the surface of the rolling motor 32. At this time, the concave part of the airbag 1 will be driven to rotate, and the whole airbag 1 will have friction with the inner surface of the quartz tube 5 to be sandblasted and will move forward due to the frictional force, thereby driving the entire device to slowly move forward inside the quartz tube 5 to be sandblasted, so that all inner walls of the quartz tube 5 to be sandblasted can be evenly sandblasted. The rolling motor 32 is radially installed on the motor mounting seat 31. This installation method can enable the rolling motor 32 to drive the airbag 1 to axially roll inside the quartz tube 5 to be sandblasted during rotation. The surface of the rolling motor 32 is processed with friction-increasing protrusions, and the rolling motors 32 are interlinked with each other. The surface of the rolling motor 32 is processed with friction-increasing protrusions: the main function of these protrusions is to increase the frictional force between the rolling motor 32 and the airbag 1, enabling the airbag 1 to roll better on the rolling motor 32. At the same time, these protrusions can also prevent the airbag 1 from slipping or shifting during the rolling process. A rubber cover plate 4 is installed on the outer surface of the fixed bearing plate 3.The rubber cover plate 4 can seal the unsealed parts at both ends of the device, forming a sealed sandblasting space inside the device, preventing the ejected abrasive from splashing everywhere and polluting the working environment. The airbag 1 can be inflated manually or by an automatic inflation device. The airbag 1 can be inflated manually or by an automatic inflation device to provide sufficient pressure to tightly hold the device against the inner surface of the quartz tube 5 to be sandblasted. At the same time, the airbag 1 can also roll on the inner surface of the quartz tube 5 to be sandblasted through the friction force generated by the rolling motor 32, which can not only evenly sandblast the quartz tube 5 to be sandblasted but also suck out the residues during the formation process.

[0038] Working principle: Fix and install the central turntable 22, the sand inlet pipe 221, and the drive shaft 222 onto the fixed bearing plate 3. Ensure that the sand inlet pipe 221 communicates with the sand distribution pipe 224, and the sandblasting head 21 is fixedly connected to the central turntable 22 through threads. Buckle the crescent shape of the airbag 1 downward onto the fixed bearing plate 3, and respectively clamp the two annular rolling rings 11 in the protrusions of the airbag 1 to ensure that the airbag 1 is pressed tightly against the rolling motor 32. The non-notch part of the airbag 1 closely adheres to the inner wall of the quartz tube 5 to be sandblasted. Install the internal suction pipe 34 onto the suction hole 33 through threads, and then install the external suction pipe 35 onto the suction hole 33 by pressing. Turn on the power switch to start the sandblasting operation. The drive motor 6 drives the drive shaft 222 to rotate, and the drive shaft 222 drives the central turntable 22 to rotate, so that the sand and gravel in the sand inlet pipe 221 and the sand distribution pipe 224 are evenly distributed onto the inner wall of the quartz tube 5 to be sandblasted, evenly sandblasting the inner wall of the quartz tube 5 to be sandblasted. At the same time, the airbag 1 rolls along the inner wall of the quartz tube 5 to be sandblasted under the drive of the rolling motor 32, driving the sandblasting assembly 2 to move axially inside the quartz tube 5 to be sandblasted, realizing the entire sandblasting operation on the inner surface of the quartz tube 5 to be sandblasted. Connect the external suction pipe 35 to an external suction device. During the process of the device moving forward for sandblasting, the internal suction pipe 34 sucks out the residues to ensure the smooth progress of the device, improve the sandblasting quality, and recycle the abrasive. The rubber cover plate 4 can make the device form a sealed space during sandblasting, preventing the ejected abrasive from splashing everywhere and polluting the working environment.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quartz tube internal sandblasting device, comprising an air bag (1), a sandblasting assembly (2) and a fixed bearing plate (3), characterized in that: The sandblasting assembly (2) comprises a central rotating disk (22), and both ends of the central rotating disk (22) are respectively processed with a sand feeding pipe (221) and a driving shaft (222), and fixed bearing discs (3) are fixedly installed at both ends of the sand feeding pipe (221) and the driving shaft (222), and a driving motor (6) is installed at one end of the driving shaft (222), and the driving shaft (222) is fixedly connected to the motor shaft; A motor mounting seat (31) is mounted on the outer contour of the fixed bearing disc (3), the motor mounting seat (31) is connected to the fixed bearing disc (3) via a cylindrical bearing, a rolling motor (32) is mounted on the motor mounting seat (31), a suction hole (33) is machined on the fixed bearing disc (3), an internal suction pipe (34) is mounted on one end of the suction hole (33) close to the sandblasting component (2), and an external suction pipe (35) is mounted on the other end, a mounting hole (36) is machined at the center of the fixed bearing disc (3), and the sand inlet pipe (221) and the drive shaft (222) are fixedly mounted in the mounting hole (36); When the airbag (1) is not installed, it is in the shape of a sealed annular ring. When the airbag (1) is installed on the fixed bearing disk (3), the cross-section of the airbag (1) is in the shape of a waning moon with the interior compressed inwardly. Two annular rolling rings (11) are installed inside the airbag (1). The two annular rolling rings (11) are respectively located in the downward protrusions of the waning moon shape of the airbag (1). The concave part of the airbag (1) is installed around the outer contour of the fixed bearing disk (3). The annular rolling rings (11) are respectively fastened on both sides of the fixed bearing disk (3) to press the airbag (1) onto the rolling motor (32). The non-notch part of the airbag (1) is in close contact with the inner wall of the quartz tube (5) to be sandblasted.

2. A quartz tube internal sandblasting device according to claim 1, characterized in that: The internal suction pipe (34) is a bent hollow pipe and is installed in the suction hole (33) by means of threads. The external suction pipe (35) comprises a main pipe (351) and four branch pipes (352). The branch pipes (352) are installed in the suction hole (33) by pressing. The inner surface of the outer end of the main pipe (351) is processed with threads.

3. A quartz tube internal sandblasting device according to claim 1, characterized in that: A threaded hole (223) is machined on the outer contour of the central rotating disk (22); the sandblasting head (21) is fixedly connected to the central component via threads; the sand inlet pipe (221) is connected to the sand distribution pipe (224); and the sand distribution pipe (224) is connected to the threaded hole (223).

4. A quartz tube internal sandblasting device according to claim 1, characterized in that: The end of the sand feeding pipe (221) has a bend, the bend is located in the air gap of the external suction pipe (35), and the inside of the bend is processed with a thread.

5. The quartz tube internal sandblasting device according to claim 1, characterized in that: The rolling motor (32) is radially mounted on the motor mounting seat (31).

6. A quartz tube internal sandblasting device according to claim 1, characterized in that: The surfaces of the rolling motors (32) are processed with protruding points for increasing friction, and the rolling motors (32) are linked to each other.

7. The quartz tube internal sandblasting device according to claim 1, characterized in that: A rubber cover plate (4) is installed on the outer surface of the fixed bearing disc (3).

8. The quartz tube internal sandblasting device according to claim 1, characterized in that: The airbag (1) can be inflated by manual inflation or automatic inflation equipment.

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