High-speed spring shot blasting equipment and shot blasting process

Abstract

The invention provides high-speed spring shot blasting equipment and a shot blasting process. A support surrounds the inner wall of a shot blasting chamber, the lower end of the support is rotationally connected with a rotating bearing, the upper end and the lower end of the rotating bearing are each provided with an outer ring, the rotating bearing rotates by 360 degrees at the lower end of the support, the support and the rotating bearing are arranged in a matched mode, and the support surrounds the inner wall of the shot blasting chamber; rails are arranged at the two ends of the outer side of the outer ring and are in a circular ring shape, when the rotating bearing rotates, the outer ring synchronously rotates, protruding blocks are distributed on the inner sides of the rails of the outer ring, sliding rods are slidably connected into the rails of the outer ring, and deformation plates are arranged at the two ends of the sliding rods; the sliding rod can continuously extrude to one side of the protruding block, at the moment, the deformation plate is integrally compressed and deformed, the lengths of the two ends of the sliding rod are shortened through deformation of the deformation plate, and then the sliding rod can continuously slide on the outer side of the outer ring through one side of the protruding block.

Description

Technical Field

[0001] The invention relates to the technical field of abrasive or particle material spraying, in particular to a high-speed spring shot blasting device and a shot blasting process. Background Art

[0002] After the spring is processed by shot blasting equipment, it can eliminate the internal stress of the produced spring, improve its durability, increase its strength, remove the rust, scale and dirt on the surface of the workpiece, and make the surface of the spring workpiece present the original color of metal. The shot blasting equipment mainly uses the high-speed rotating shot blasting machine to spray the shot blasting medium at high speed onto the metal surface to achieve the effect of cleaning, rust removal and strengthening. Technical enlightenment for shot blasting equipment; Research on shot blasting equipment found the following problems: The shot blasting equipment can only drive the shot blasting medium and spring friction cleaning through high-speed rotation. Due to the randomness of the friction between the spring and the shot blasting medium, the shot blasting equipment needs to rotate the spring and the shot blasting medium for a long time, making it impossible for the shot blasting equipment to further assist the shot blasting medium and spring in squeezing and friction while driving the shot blasting medium and spring at high speed, thereby shortening the spring processing time; At present, CN202410384107.4 in the prior art discloses a spring shot blasting machine, which, by arranging a screen plate inside a processing box, firstly causes the projectiles to fall into the highest position of the upper screen plate after shot blasting, and since the screen plate is of inclined design, the projectiles roll down from the highest position to the lowest position along its inclined surface, and then fall on the highest position of the lower screen plate, and finally roll down from the highest position to the lowest position, and in the process of rolling down, the projectiles are screened, and at the same time, the rotating elliptical disk continuously pushes up the screen plate to make it vibrate up and down continuously, and the continuously vibrating screen plate can not only make the projectiles roll down from the screen plate more quickly for screening, but also make the impurities falling into the screen holes be shaken off more quickly, thereby preventing the problem of material blockage; The present invention can mainly solve the problem that the shot blasting equipment cannot further assist the extrusion friction between the shot blasting medium and the spring while driving the shot blasting medium and the spring in high-speed rotation. Summary of the invention

[0003] The object of the present invention is to provide a high-speed spring shot blasting equipment and a shot blasting process.

[0004] To achieve the above object, the present invention provides the following technical solutions: A high-speed spring shot blasting equipment and a shot blasting process, comprising a shot blasting chamber, the top of which is movably nested and connected with a top cover, the side of which is hinged with a side cover through a hinge, the upper end of the shot blasting chamber is penetrated and docked with a pipeline, the pipeline is in turn penetrated and docked with a dust removal chamber and a suction pump through the pipeline, and the interior of the shot blasting chamber is rotatably connected with an impeller.

[0005] As a further solution of the present invention: a motor and a discharge port are provided at the lower end of the shot blasting chamber, the discharge port is equipped with a valve, the motor and the suction pump are connected to the power supply circuit through a power line, and the motor drives the impeller to rotate inside the shot blasting chamber.

[0006] As a further solution of the present invention: the side cover is hinged to the side of the shot blasting chamber and swings at 90 degrees, and the pipeline runs through the interior of the top cover.

[0007] As a further solution of the present invention: a dust filter bag is arranged inside the dust removal chamber, and a suction pump drives the air and dust inside the shot blasting chamber into the dust removal chamber through a pipeline.

[0008] As a further solution of the present invention: the impeller is arranged vertically as a whole, and the interior of the shot blasting chamber is filled with springs and sand grains.

[0009] As a further solution of the present invention: the inner wall of the shot blasting chamber is surrounded by a bracket, the lower end of the bracket is rotatably connected to a rotary bearing, and the upper and lower ends of the rotary bearing are both provided with outer rings.

[0010] As a further solution of the present invention: the rotary bearing is rotatable 360° at the lower end of the bracket, the bracket and the rotary bearing are matched with each other, and the bracket surrounds the inner wall of the shot blasting chamber.

[0011] As a further solution of the present invention: tracks are provided at both ends of the outer side of the outer ring, and the tracks are in a circular ring shape. When the rotary bearing rotates, the outer ring rotates synchronously.

[0012] As a further solution of the present invention: there are protrusions distributed on the inner side of the track of the outer ring, a sliding rod is slidably connected inside the track of the outer ring, deformation plates are inlaid at both ends of the sliding rod, a side plate is slidably connected to the side of the sliding rod away from the outer ring, and an extension plate is provided between the side plates.

[0013] As a further solution of the present invention: there are four evenly distributed protrusions, the protrusions and the outer ring are matched with each other, the protrusions are semicircular arc-shaped, and the radius of the protrusions is 0.5-1 cm.

[0014] As a further solution of the present invention, the sliding rods are grouped into two each, each group of sliding rods is located between the protrusions, and the sliding rods slide 360 ​​degrees on the inner side of the track of the outer ring.

[0015] As a further solution of the present invention: the deformable plate is wavy in shape as a whole, the interior of the deformable plate is hollow, and the deformable plate is made of rubber.

[0016] As a further solution of the present invention: the extension plate passes through one side of the rotary bearing, the side plates are located at both ends of the extension plate, the extension plates are arranged vertically, and each two extension plates are distributed on the outside of the rotary bearing in a group.

[0017] As a further solution of the present invention: the shot blasting process comprises the following steps: S1: Open the top cover, fill the spring and sand inside the shot blasting chamber, close the top cover, and then the motor drives the impeller to rotate at high speed, and the impeller sprays the sand at high speed onto the surface of the spring; S2: The impeller drives the spring and sand to rotate at high speed inside the shot blasting chamber. The spring and sand impact one side of the extension plate. The extension plate drives the slide bar to slide through the side plate. The slide bar slides 360° on the inner side of the outer ring. S3: Since there are bumps on the inner side of the outer ring, when the slide bar slides to one side of the bump, the protrusion of the bump can be used to intercept and stop the slide bar; S4: The sliding bar on the other side of the outer ring can impact one side of the sliding bar, and the distance between the extension plates on one side of the sliding bar is shortened; S5: When one side of the extension plate is continuously impacted by the spring and the sand, the slide bar can be continuously squeezed to one side of the protrusion. At this time, the deformation plate is compressed and deformed as a whole. Through the deformation of the deformation plate, the lengths of both ends of the slide bar are shortened; S6: Then the slide rod can pass through one side of the protrusion and continue to slide on the outer side of the outer ring, repeating the above steps, and the extension plates can repeatedly squeeze and clean the spring and sand during the rotation of the impeller; S7: The dust generated after the spring is cleaned enters the dust removal chamber through the pipeline. The suction pump drives the air and dust inside the shot blasting chamber into the dust removal chamber through the pipeline. The dust is filtered through the dust filter bag inside the dust removal chamber.

[0018] Beneficial Effects 1. The impeller drives the spring and sand to rotate at high speed inside the shot blasting chamber. The spring and sand impact one side of the extension plate. The extension plate drives the slide bar to slide through the side plate. The slide bar slides 360° on the inner side of the outer ring. Since there are bumps on the inner side of the outer ring, when the slide bar slides to one side of the bump, the bump can be used to intercept and stop the slide bar. 2. At this time, the slide bar on the other side of the outer ring can impact one side of the slide bar, and the distance between the extension plates on one side of the slide bar is shortened. Through the extrusion between the extension plates, the spring and sand can be further squeezed and cleaned, so that the shot blasting equipment can use the impact generated by the impeller driving the spring and sand to further squeeze and blast the spring and sand, thereby reducing the overall shot blasting time of the spring; 3. Deformation plates are provided at both ends of the slide bar. When one side of the extension plate is continuously impacted by the spring and sand, the slide bar can be continuously squeezed to one side of the protrusion. At this time, the deformable plate is compressed and deformed as a whole. Through the deformation of the deformable plate, the length of both ends of the slide bar is shortened, and then the slide bar can pass through one side of the protrusion and continuously slide on the outside of the outer ring. Repeat the above steps, so that the extension plates can repeatedly squeeze and clean the spring and sand during the rotation of the impeller; 4. Through the above steps, during the high-speed rotation of the spring and the sand particles, the impact force generated by the movement of the spring and the sand particles can be used to drive the extension plate and the slide rod to slide. At the same time, the protrusion can cause the slide rod and the deformation plate to stop temporarily, so that the extension plates can squeeze the spring to form shot blasting, thereby shortening the spring shot blasting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the shot blasting chamber structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the interior of the shot blasting chamber of the present invention.

[0022] Figure 4 It is a partial schematic diagram of the interior of the shot blasting chamber of the present invention.

[0023] Figure 5 It is a schematic diagram of a rotary bearing assembly of the present invention.

[0024] Figure 6 It is a schematic diagram of the outer ring structure of the present invention.

[0025] Figure 7 It is a schematic diagram of the side structure of the outer ring of the present invention.

[0026] Figure 8 It is a schematic diagram of the sliding rod structure of the present invention.

[0027] Figure 1-8 Middle: 1-shot blasting chamber, 101-pipeline, 102-dust removal chamber, 103-suction pump, 104-top cover, 105-impeller, 106-side cover, 2-bracket, 201-rotating bearing, 3-outer ring, 301-bump, 302-slide rod, 303-deformation plate, 4-side plate, 401-extension plate. DETAILED DESCRIPTION

[0028] See also Figure 1-8 In the embodiment of the present invention, Embodiment 1: A high-speed spring shot blasting device and a shot blasting process, comprising a shot blasting chamber 1, the top of the shot blasting chamber 1 is movably nested and connected with a top cover 104, the side of the shot blasting chamber 1 is hinged with a side cover 106, the upper end of the shot blasting chamber 1 is penetrated and docked with a pipe 101, the pipe 101 is sequentially connected with a dust removal chamber 102 and a suction pump 103 through the pipe 101, and the interior of the shot blasting chamber 1 is rotatably connected with an impeller 105; Wherein: a shot blasting chamber 1, a motor and a discharge port are provided at the lower end of the shot blasting chamber 1, a valve is provided at the discharge port, the motor and the suction pump 103 are connected to the power supply circuit through a power line, and the motor drives the impeller 105 to rotate inside the shot blasting chamber 1; The discharge port is equipped with a valve, which is used to close and open the discharge port, so that the spring inside the shot blasting chamber 1 can fall to the bottom of the shot blasting chamber 1; The side cover 106 is hinged to the side of the shot blasting chamber 1 to swing at 90 degrees, and the pipeline 101 runs through the interior of the top cover 104; A dust removal chamber 102 is provided with a dust filter bag inside the dust removal chamber 102, and a suction pump 103 drives the air and dust inside the shot blasting chamber 1 into the dust removal chamber 102 through the pipeline 101; The suction pump 103 drives the air and dust inside the shot blasting chamber 1 into the dust removal chamber 102 through the pipeline 101, and the dust is filtered by the dust filter bag inside the dust removal chamber 102; The impeller 105 is vertically arranged as a whole, and the interior of the shot blasting chamber 1 is filled with springs and sand particles; Wherein: the top cover 104 is opened, the spring and sand are filled in the shot blasting chamber 1, the top cover 104 is closed, and then the motor drives the impeller 105 to rotate at a high speed, and the impeller 105 sprays the sand at a high speed onto the surface of the spring to achieve the effects of cleaning, rust removal and strengthening, and then the dust generated after the spring is cleaned enters the interior of the dust removal chamber 102 through the pipe 101, and the suction pump 103 drives the air and dust inside the shot blasting chamber 1 into the interior of the dust removal chamber 102 through the pipe 101, and the dust is filtered through the dust filter bag inside the dust removal chamber 102; Example 2: Refer to the attached manual Figure 3-6 It can be seen that the difference between Example 2 and Example 1 is that the inner wall of the shot blasting chamber 1 is surrounded by a bracket 2, the lower end of the bracket 2 is rotatably connected to a rotary bearing 201, and the upper and lower ends of the rotary bearing 201 are provided with outer rings 3; Among them: the bracket 2 and the rotating bearing 201, the rotating bearing 201 is 360° rotatable at the lower end of the bracket 2, the bracket 2 and the rotating bearing 201 are matched, and the bracket 2 surrounds the inner wall of the shot blasting chamber 1; The outer ring 3 has tracks at both ends of the outer side of the outer ring 3. The tracks are in a circular ring shape. When the rotary bearing 201 rotates, the outer ring 3 rotates synchronously. Among them: the bracket 2 and the rotating bearing 201 are distributed around the outer side of the impeller 105, and the impeller 105 drives the sand and the spring to move at high speed inside the shot blasting chamber 1. At this time, the sand and the spring synchronously impact the outer side of the outer ring 3, and the outer ring 3 drives the rotating bearing 201 to rotate 360° at the lower end of the bracket 2; Example 3: Refer to the attached manual Figure 5-8 It can be seen that the difference between Example 3 and Example 1-2 is that a protrusion 301 is distributed on the inner side of the track of the outer ring 3, a slide bar 302 is slidably connected inside the track of the outer ring 3, both ends of the slide bar 302 are inlaid with a deformation plate 303, the side of the slide bar 302 away from the outer ring 3 is slidably connected to the side plate 4, and an extension plate 401 is provided between the side plates 4; Among them: convex block 301, 4 convex blocks 301 are evenly distributed, convex blocks 301 and outer ring 3 are matched, convex blocks 301 are semicircular arc-shaped, and the radius of convex blocks 301 is 0.5-1cm; The bump 301 is semicircular, and the radius of the bump 301 is 0.5-1 cm, so as to avoid the situation where the slide bar 302 cannot slide on one side of the bump 301 due to the large radius of the bump 301; Slide bars 302, each two slide bars 302 form a group, each group of slide bars 302 is located between the protrusions 301, and the slide bars 302 slide 360 ​​degrees on the inner side of the track of the outer ring 3; Each pair of slide bars 302 is a group, and each group of slide bars 302 is located between the protrusions 301. Figure 7 As shown; Each group of the sliding bars 302 is located between the protrusions 301 , and when one group of the sliding bars 302 is stopped due to the resistance of the protrusions 301 , the other group of the sliding bars 302 can quickly impact to one side of the sliding bar 302 ; The deformable plate 303 is wavy in shape as a whole, and the interior of the deformable plate 303 is hollow. The deformable plate 303 is made of rubber; The deformable plate 303 is wavy in shape as a whole, and the interior of the deformable plate 303 is hollow. Figure 8 As shown; When the slide bar 302 is stopped by the arc-shaped setting of the protrusion 301, since the deformable plate 303 is wavy as a whole and hollow inside, the deformable plate 303 can be compressed and deformed as a whole as the slide bar 302 continues to slide. Through the deformation of the deformable plate 303, the lengths of both ends of the slide bar 302 are shortened, and the slide bar 302 can pass through one side of the protrusion 301 and continue to slide on the outside of the outer ring 3. The side plate 4 and the extension plate 401, the extension plate 401 passes through one side of the rotating bearing 201, the side plate 4 is located at both ends of the extension plate 401, the extension plates 401 are arranged vertically, and each two extension plates 401 are distributed on the outer side of the rotating bearing 201; The extension plates 401 are arranged vertically, and each two extension plates 401 are distributed on the outer side of the rotating bearing 201 in a group. Figure 5 As shown; Wherein: the impeller 105 drives the spring and the sand to rotate and move at a high speed inside the shot blasting chamber 1, and the spring and the sand impact one side of the extension plate 401, and the extension plate 401 drives the slide bar 302 to slide through the side plate 4, and the slide bar 302 slides 360° on the inner side of the outer ring 3. Since the inner side of the outer ring 3 is provided with a protrusion 301, when the slide bar 302 slides to one side of the protrusion 301, the protrusion of the protrusion 301 can be used to intercept and stop the slide bar 302; At this time, the slide bar 302 on the other side of the outer ring 3 can impact one side of the slide bar 302, and the distance between the extension plates 401 on one side of the slide bar 302 is shortened. Through the extrusion between the extension plates 401, the spring and the sand can be further squeezed and cleaned, so that the shot blasting equipment can use the impact generated by the rotation of the spring and the sand driven by the impeller 105 to further squeeze and blast the spring and the sand, thereby reducing the overall shot blasting time of the spring; Deformation plates 303 are provided at both ends of the slide bar 302. When one side of the extension plate 401 is continuously impacted by the spring and sand, the slide bar 302 can be continuously squeezed to one side of the protrusion 301. At this time, the deformable plate 303 is compressed and deformed as a whole. Through the deformation of the deformable plate 303, the length of both ends of the slide bar 302 is shortened, and then the slide bar 302 can pass through one side of the protrusion 301 and continuously slide on the outside of the outer ring 3. Repeat the above steps, so that the extension plates 401 can repeatedly squeeze and clean the spring and sand during the rotation of the impeller 105. Embodiment 4: The shot blasting process includes the following steps: S1: Open the top cover 104, fill the spring and sand inside the shot blasting chamber 1, close the top cover 104, and then the motor drives the impeller 105 to rotate at high speed, and the impeller 105 sprays the sand onto the surface of the spring at high speed; S2: The impeller 105 drives the spring and the sand to rotate and move at a high speed inside the shot blasting chamber 1. The spring and the sand impact one side of the extension plate 401. The extension plate 401 drives the slide bar 302 to slide through the side plate 4. The slide bar 302 slides 360° on the inner side of the outer ring 3. S3: Since there are protrusions 301 on the inner side of the outer ring 3, when the slide bar 302 slides to one side of the protrusion 301, the protrusion of the protrusion 301 can be used to intercept and stop the slide bar 302; S4: the sliding bar 302 on the other side of the outer ring 3 can impact one side of the sliding bar 302, and the distance between the extension plates 401 on one side of the sliding bar 302 is shortened; S5: When one side of the extension plate 401 is continuously impacted by the spring and the sand, the slide bar 302 can be continuously squeezed to one side of the protrusion 301. At this time, the deformation plate 303 is compressed and deformed as a whole. Through the deformation of the deformation plate 303, the lengths of both ends of the slide bar 302 are shortened; S6: Then the slide bar 302 can pass through one side of the protrusion 301 and continue to slide on the outer side of the outer ring 3, and the above steps are repeated. The extension plates 401 can repeatedly squeeze and clean the spring and sand during the rotation of the impeller 105; S7: The dust generated after the spring cleaning enters the dust removal chamber 102 through the pipe 101, and the suction pump 103 drives the air and dust inside the shot blasting chamber 1 into the dust removal chamber 102 through the pipe 101, and the dust is filtered by the dust filter bag inside the dust removal chamber 102; Through the above steps, during the high-speed rotation of the spring and the sand, the impact force generated by the movement of the spring and the sand can be used to drive the extension plate 401 and the slide bar 302 to slide. At the same time, the protrusion 301 can cause the slide bar 302 and the deformation plate 303 to stop briefly, so that the extension plates 401 can form squeeze shot blasting on the spring, thereby shortening the spring shot blasting time.

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A high-speed spring shot blasting equipment, characterized in that: include A shot blasting chamber (1), wherein a top cover (104) is movably nested and connected to the top of the shot blasting chamber (1), and a side cover (106) is hingedly connected to the side of the shot blasting chamber (1) via a hinge; A dust removal chamber (102) and a pipe (101) are connected to the upper ends of the shot blasting chamber (1), and the pipe (101) is connected to the dust removal chamber (102) and the suction pump (103) in sequence through the pipe (101). An impeller (105) is rotatably connected to the interior of the shot blasting chamber (1); A dust filter bag is provided inside the dust removal chamber (102), and a suction pump (103) drives the air and dust inside the shot blasting chamber (1) into the dust removal chamber (102) through the pipeline (101).

2. A high-speed spring shot blasting equipment according to claim 1, characterized in that: A motor and a discharge port are provided at the lower end of the shot blasting chamber (1), and a valve is provided at the discharge port. The motor and the suction pump (103) are connected to a power supply circuit via a power line, and the motor drives the impeller (105) to rotate inside the shot blasting chamber (1).

3. A high-speed spring shot blasting equipment according to claim 1, characterized in that: The inner wall of the shot blasting chamber (1) is surrounded by a bracket (2), the lower end of the bracket (2) is rotatably connected to a rotary bearing (201), and the upper and lower ends of the rotary bearing (201) are both provided with outer rings (3).

4. A high-speed spring shot blasting equipment according to claim 3, characterized in that: The rotating bearing (201) rotates 360 degrees at the lower end of the bracket (2); the bracket (2) and the rotating bearing (201) are arranged in a matching manner; the bracket (2) surrounds the inner wall of the shot blasting chamber (1).

5. The high-speed spring shot blasting equipment according to claim 3, characterized in that: Tracks are provided at both ends of the outer side of the outer ring (3), and the tracks are in a circular ring shape. When the rotary bearing (201) rotates, the outer ring (3) rotates synchronously.

6. A high-speed spring shot blasting equipment according to any one of claims 1 or 3, characterized in that: The inner side of the track of the outer ring (3) is provided with protrusions (301), the inner side of the track of the outer ring (3) is slidably connected with a slide bar (302), both ends of the slide bar (302) are inlaid with deformation plates (303), the side of the slide bar (302) away from the outer ring (3) is slidably connected with a side plate (4), and an extension plate (401) is provided between the side plates (4).

7. A high-speed spring shot blasting equipment according to claim 6, characterized in that: There are four evenly distributed protrusions (301), the protrusions (301) and the outer ring (3) are matched with each other, the protrusions (301) are semicircular in shape, and the radius of the protrusions (301) is 0.5-1 cm.

8. The high-speed spring shot blasting equipment according to claim 6, characterized in that: The sliding rods (302) are grouped in pairs. Each group of sliding rods (302) is located between the protrusions (301). The sliding rods (302) slide 360 ​​degrees on the inner side of the track of the outer ring (3).

9. The high-speed spring shot blasting equipment according to claim 6, characterized in that: The deformable plate (303) is wavy in shape as a whole, and the interior of the deformable plate (303) is hollow; The side plate (4) and the extension plate (401) are arranged in a vertical direction. The extension plate (401) is arranged in a group of two and is distributed outside the rotation bearing (201).

10. A shot blasting process of a high-speed spring shot blasting device, characterized in that: The high-speed spring shot blasting equipment according to claims 1-9, the shot blasting process comprises the following steps: S1: Open the top cover (104), fill the spring and sand inside the shot blasting chamber (1), close the top cover (104), and then drive the impeller (105) to rotate at high speed, so that the impeller (105) sprays the sand at high speed onto the surface of the spring; S2: The impeller (105) drives the spring and the sand particles to rotate and move at a high speed inside the shot blasting chamber (1), and the spring and the sand particles impact one side of the extension plate (401). The extension plate (401) drives the slide bar (302) to slide through the side plate (4), and the slide bar (302) slides 360° on the inner side of the outer ring (3); S3: Since the inner side of the outer ring (3) is provided with a protrusion (301), when the slide bar (302) slides to one side of the protrusion (301), the protrusion of the protrusion (301) can be used to intercept and stop the slide bar (302); S4: the sliding bar (302) on the other side of the outer ring (3) can impact one side of the sliding bar (302), and the distance between the extension plates (401) on one side of the sliding bar (302) is shortened; S5: When one side of the extension plate (401) is continuously impacted by the spring and the sand, the slide bar (302) can be continuously squeezed to one side of the protrusion (301), and the deformation plate (303) is compressed and deformed as a whole. Through the deformation of the deformation plate (303), the lengths of both ends of the slide bar (302) are shortened; S6: Then the slide bar (302) can pass through one side of the protrusion (301) and continue to slide on the outer side of the outer ring (3), and the above steps are repeated. The extension plates (401) can repeatedly squeeze and clean the spring and sand particles during the rotation of the impeller (105); S7: Dust generated after the spring is cleaned enters the interior of the dust removal chamber (102) through the pipe (101), and the suction pump (103) drives the air and dust inside the shot blasting chamber (1) into the interior of the dust removal chamber (102) through the pipe (101), and the dust is filtered through the dust filter bag inside the dust removal chamber (102).

Images