A shot blasting machine for stainless steel workpieces

Abstract

The present invention belongs to the technical field of abrasive material jetting, and specifically is a stainless steel workpiece shot blasting machine, comprising a supporting base; a shot storage box is fixedly connected to the top of the supporting base; a first supporting frame is fixedly connected to the inside of the supporting base; a shot blaster is fixedly connected to the side wall of the first supporting frame; the shot blaster is multiple and annularly symmetrically distributed on both sides of the first supporting frame; the shot blaster is connected to the shot storage box through a hose; this step can screen the shot and impurities by providing a first screen, thereby reducing the adhesion of impurities on the surface of the shot, affecting the shot blasting treatment of the stainless steel workpiece by the shot, and by providing a circulation groove, a first conveyor belt and a push plate, the screened shot can be redirected back to the inside of the shot storage box, thereby realizing automatic separation of the shot and impurities, and circulating the shot back to the inside of the shot storage box, thereby reducing the workload of the staff during the shot blasting treatment of the stainless steel workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of abrasive material jetting, in particular to a stainless steel workpiece shot blasting machine. Background Art

[0002] Stainless steel workpieces are products of various shapes and sizes made of stainless steel materials. These products are widely used in industries including but not limited to construction, manufacturing, medical equipment, food processing, and the automotive industry. Stainless steel workpieces can be made through a variety of processing methods such as casting, forging, welding, cutting, and bending. The main feature of stainless steel workpieces is that they are not easy to rust because they contain a certain proportion of chromium, which allows them to form a protective chromium oxide film in a dry environment to prevent further corrosion. In addition, stainless steel workpieces also have good mechanical properties and heat resistance, so they are widely used in occasions that require these characteristics.

[0003] In the prior art, after the stainless steel workpiece is shot blasted, impurities such as oxide layer and welding slag will be removed, but these impurities will adhere to the surface of the projectile, affecting the next shot blasting of the stainless steel workpiece. In the prior art, after the stainless steel workpiece is shot blasted, the projectile and impurities need to be screened, which increases the workload of the staff.

[0004] To this end, the present invention provides a stainless steel workpiece shot blasting machine. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a shot blasting machine for stainless steel workpieces is proposed.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a stainless steel workpiece shot blasting machine described in the present invention comprises a support base; a shot storage box is fixedly connected to the top of the support base; a first support frame is fixedly connected to the inside of the support base; a shot blaster is fixedly connected to the side wall of the first support frame; the shot blaster is multiple and annularly symmetrically distributed on both sides of the first support frame; the shot blaster is connected to the shot storage box through a hose; a guide groove is provided at the bottom of the support base; a first guide groove is fixedly connected to the bottom of the guide groove; a circulation groove is fixedly connected to the side wall of the support base; the bottom end of the first guide groove is connected to the feeding port of the circulation groove; a first conveyor belt is provided in the middle of the circulation groove; a push plate is fixedly connected to the side wall of the first conveyor belt; the push plates are multiple and evenly distributed on the side wall of the first conveyor belt; a first screen is fixedly connected to the bottom of the circulation groove; The aperture of the first screen is smaller than the diameter of the projectile; a second guide groove is provided between the discharge port of the circulation trough and the projectile storage box; a driving assembly is provided inside the support base; this step can perform shot blasting on the stainless steel workpiece by providing a support base, a projectile storage box, a first support frame and a shot blaster, and then remove the oxide layer, welding slag and other impurities on the surface of the stainless steel workpiece; by providing the first screen, the projectile and impurities can be screened, thereby reducing the adhesion of impurities on the surface of the projectile, affecting the shot blasting of the stainless steel workpiece by the projectile; by providing the circulation trough, the first conveyor belt and the push plate, the screened projectile can be redirected back to the projectile storage box, thereby realizing automatic separation of the projectile and impurities, and circulating the projectile back to the projectile storage box, thereby reducing the workload of the staff during the shot blasting of the stainless steel workpiece.

[0007] Preferably, a second screen is fixedly connected to the middle of the push plate; the second screen is consistent with the aperture of the second guide groove; this step, by providing the second screen, can further screen the projectiles and impurities when the first conveyor belt and the push plate guide the projectiles back to the projectile storage box, further reduce the adhesion of impurities on the surface of the projectiles, affect the shot blasting of the stainless steel workpiece by the projectiles, and improve the shot blasting effect on the stainless steel workpiece.

[0008] Preferably, the driving assembly includes a second conveyor belt; the second conveyor belt is installed inside the supporting base; a sliding groove is opened in the middle of the supporting base; a second support frame is slidably connected to the middle of the sliding groove; a supporting roller is rotatably connected to the middle of the second support frame; the second conveyor belt is a pair and is symmetrically distributed on both sides of the first support frame; this step can transport the stainless steel workpiece by providing a second conveyor belt, and by providing a sliding groove, a second support frame and a supporting roller, the stainless steel workpiece can be supported when the second conveyor belt transports the stainless steel workpiece, thereby improving the stability of the shot blasting machine during shot blasting of the stainless steel workpiece, and further improving the shot blasting effect of the shot blasting machine on the stainless steel workpiece.

[0009] Preferably, the support roller is hollow; a first air pump is installed on the side wall of the second support frame; the second support frame is connected to the first air pump; an air guide hole is opened in the middle of the support roller; there are multiple air guide holes and they are evenly distributed in the middle of the support roller; this step can jet and decelerate the projectiles that hit the support roller by providing the first air pump and the air guide holes, thereby reducing the situation where the projectiles hit the support roller at high speed and cause damage to the support roller, thereby increasing the service life of the support roller.

[0010] Preferably, a cleaning scraper is fixedly connected to the end of the pushing plate; the end of the cleaning scraper is in contact with the inner wall of the circulation groove; in this step, by providing a cleaning scraper, impurities adhered to the inner wall of the circulation groove can be scraped off when the pushing plate pushes the projectile, thereby reducing the accumulation of impurities inside the circulation groove and adhering to the surface of the projectile, further reducing the adhesion of impurities to the surface of the projectile, affecting the shot blasting of the stainless steel workpiece by the projectile, and further improving the shot blasting effect on the stainless steel workpiece.

[0011] Preferably, the bottom of the second support frame is rotatably connected to rollers; the rollers are symmetrically distributed on both sides of the bottom of the second support frame; this step, by providing rollers, can change the sliding contact between the bottom of the second support frame and the bottom of the inner side wall of the support base into a rolling contact between the roller surface and the bottom of the inner side wall of the support base, thereby reducing the friction force when the bottom of the second support frame contacts the bottom of the inner side wall of the support base, thereby reducing the wear when the bottom of the second support frame contacts the bottom of the inner side wall of the support base, and improving the stability of the second support frame when it moves along the inner side wall of the support base.

[0012] Preferably, a second air pump is installed on the side wall of the circulation tank; an air duct is fixedly connected to the air outlet end of the second air pump; the other end of the air duct is connected to the top of the circulation tank; this step, by providing a second air pump and an air duct, can blow air into the inside of the circulation tank when the first conveyor belt and the push plate are transporting, thereby further cleaning impurities adhered to the surface of the projectile, further reducing the adhesion of impurities on the surface of the projectile, affecting the shot blasting of the stainless steel workpiece by the projectile, and further improving the shot blasting effect on the stainless steel workpiece.

[0013] Preferably, an elastic barrier curtain is fixed inside the support base; the elastic barrier curtain is multiple and symmetrically distributed on both sides of the first support frame; the elastic barrier curtain is arranged between the second conveyor belt and the first support frame; this step is provided with an elastic barrier curtain, which can block the flying projectiles and impurities when the shot blasting machine is shot blasting the stainless steel workpiece, thereby reducing the situation where the projectiles and impurities are splashed to the surroundings and pollute the surrounding environment, and reducing the loss of projectiles when the projectiles are shot blasting the stainless steel workpiece.

[0014] Preferably, a support seat is fixedly connected to the bottom of the first guide groove; a collection box is slidably connected to the middle of the support seat; the first screen is arranged above the collection box; this step can collect impurities sieved by the first screen and the second screen by providing a support seat and a collection box, thereby facilitating the staff to collect and transport the impurities and further reducing the workload of the staff.

[0015] Preferably, a third guide groove is provided in the middle of the pellet storage box; the third guide groove is arranged corresponding to the hose; this step can guide the pellets inside the pellet storage box by providing the third guide groove, thereby making it easier for the pellets to enter the hose.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The stainless steel workpiece shot blasting machine described in the present invention can perform shot blasting on the stainless steel workpiece by providing a supporting base, a shot storage box, a first supporting frame and a shot blaster, thereby removing impurities such as an oxide layer and welding slag on the surface of the stainless steel workpiece; by providing a first screen, the shot and impurities can be screened, thereby reducing the adhesion of impurities on the surface of the shot, thereby reducing the situation where impurities adhere to the surface of the shot and affect the shot blasting of the stainless steel workpiece by the shot; by providing a circulation groove, a first conveyor belt and a push plate, the screened shot can be redirected back into the shot storage box, thereby realizing automatic separation of the shot and impurities, and circulating the shot back into the shot storage box, thereby reducing the workload of the staff during the shot blasting of the stainless steel workpiece.

[0018] 2. The stainless steel workpiece shot blasting machine described in the present invention is provided with a second screen, which can further screen the shots and impurities when the first conveyor belt and the push plate guide the shots back to the shot storage box, thereby further reducing the adhesion of impurities on the shot surface, affecting the shot blasting of the stainless steel workpiece, and improving the shot blasting effect on the stainless steel workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a stereogram in the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 is a side cross-sectional view of the present invention;

[0023] Figure 4 is a schematic structural diagram of the second support frame in the present invention;

[0024] Figure 5 It is a structural schematic diagram of the circulation tank in the present invention;

[0025] Legend:

[0026] 1. Support base; 11. Shot storage box; 12. First support frame; 13. Shot blaster; 14. Lead-out slot; 15. First guide slot; 16. Circulation slot; 17. First conveyor belt; 18. Push plate; 19. First screen; 110. Second guide slot; 111. Hose; 2. Second screen; 3. Slide slot; 31. Second support frame; 32. Support roller; 33. Second conveyor belt; 4. First air pump; 41. Air guide hole; 5. Cleaning scraper; 6. Roller; 7. Second air pump; 71. Air guide pipe; 8. Elastic curtain; 9. Support seat; 91. Collection box; 10. Third guide slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Specific examples are given below.

[0029] like Figures 1 to 5As shown, a stainless steel workpiece shot blasting machine according to an embodiment of the present invention comprises a support base 1; a shot storage box 11 is fixedly connected to the top of the support base 1; a first support frame 12 is fixedly connected to the inside of the support base 1; a shot blaster 13 is fixedly connected to the side wall of the first support frame 12; the shot blaster 13 is multiple and annularly symmetrically distributed on both sides of the first support frame 12; the shot blaster 13 is connected to the shot storage box 11 through a hose 111; a guide groove 14 is provided at the bottom of the support base 1; a first guide groove 15 is fixedly connected to the bottom of the guide groove 14; a circulation groove 16 is fixedly connected to the side wall of the support base 1; the bottom end of the first guide groove 15 is connected to the circulation groove 16 The feeding port of the circulation groove 16 is connected; a first conveyor belt 17 is provided in the middle of the circulation groove 16; a pushing plate 18 is fixedly connected to the side wall of the first conveyor belt 17; the pushing plates 18 are multiple and evenly distributed on the side wall of the first conveyor belt 17; a first screen 19 is fixedly connected to the bottom of the circulation groove 16; the aperture of the first screen 19 is smaller than the diameter of the projectile; a second guide groove 110 is provided between the discharge port of the circulation groove 16 and the projectile storage box 11; a driving assembly is provided inside the support base 1; when working, the staff will use the driving assembly to transport the stainless steel workpiece that needs to be shot blasted inside the support base 1, and at this time the shot blaster 13 will push the projectiles inside the projectile storage box 11 The shot is sprayed onto the surface of the stainless steel workpiece, and then the stainless steel workpiece is shot blasted. At this time, the shot will fall downward, and then move along the guide groove 14 and the first guide groove 15, and enter the circulation groove 16. At this time, the first screen 19 will screen the shot and the oxide layer, welding slag and other debris-like impurities. The shot larger than the aperture of the first screen 19 will remain on the first screen 19, and the oxide layer, welding slag and other debris-like impurities smaller than the aperture of the first screen 19 will fall downward. The first conveyor belt 17 and the push plate 18 will push the shot, and then re-guide it from the second guide groove 110 to the inside of the shot storage box 11. This step is provided by providing a support base 1, a shot storage box 1 1. The first support frame 12 and the shot blaster 13 can perform shot blasting on the stainless steel workpiece, and then remove the oxide layer, welding slag and other impurities on the surface of the stainless steel workpiece. By providing a first screen 19, the projectiles and impurities can be screened, thereby reducing the adhesion of impurities on the surface of the projectiles, which affects the shot blasting of the stainless steel workpiece by the projectiles. By providing a circulation groove 16, a first conveyor belt 17 and a push plate 18, the screened projectiles can be redirected back to the projectile storage box 11, thereby realizing automatic separation of projectiles and impurities, and circulating the projectiles back to the projectile storage box 11, thereby reducing the workload of the staff during the shot blasting of the stainless steel workpiece.

[0030] Further, such as Figure 3 and Figure 5As shown, a second screen 2 is fixedly connected to the middle of the push plate 18; the second screen 2 is consistent with the aperture of the second guide groove 110; in this step, by providing the second screen 2, the projectiles and debris impurities can be further screened when the first conveyor belt 17 and the push plate 18 guide the projectiles back to the projectile storage box 11, thereby further reducing the adhesion of impurities on the surface of the projectiles, affecting the shot blasting of the stainless steel workpiece by the projectiles, and improving the shot blasting effect on the stainless steel workpiece.

[0031] Further, such as Figures 1 to 4 As shown, the driving assembly includes a second conveyor belt 33; the second conveyor belt 33 is installed inside the support base 1; a sliding groove 3 is opened in the middle of the support base 1; a second support frame 31 is slidably connected in the middle of the sliding groove 3; a support roller 32 is rotatably connected in the middle of the second support frame 31; the second conveyor belt 33 is a pair and symmetrically distributed on both sides of the first support frame 12; when working, the staff uses the second conveyor belt 33 to transport the stainless steel workpiece, and when the end of the stainless steel workpiece does not contact the other second conveyor belt 33, the staff uses the support roller 32 to support the stainless steel workpiece, and when the end of the stainless steel workpiece contacts the other second conveyor belt 33, the staff uses the support roller 32 to support the stainless steel workpiece. After the two conveyor belts 33 come into contact, the staff pulls the second support frame 31 outward, thereby moving the second support frame 31 along the sliding groove 3, and pulls the support roller 32 out from the inside of the support base 1, so that the other side of the second support frame 31 closes the sliding groove 3. In this step, the second conveyor belt 33 is provided to transport the stainless steel workpiece. The sliding groove 3, the second support frame 31 and the support roller 32 are provided to support the stainless steel workpiece when the second conveyor belt 33 transports the stainless steel workpiece, thereby improving the stability of the shot blasting machine 13 during the shot blasting of the stainless steel workpiece, and further improving the shot blasting effect of the shot blasting machine 13 on the stainless steel workpiece.

[0032] Further, such as Figures 2 to 4 As shown, the support roller 32 is hollow; the first air pump 4 is installed on the side wall of the second support frame 31; the second support frame 31 is connected to the first air pump 4; an air guide hole 41 is opened in the middle of the support roller 32; there are multiple air guide holes 41 and they are evenly distributed in the middle of the support roller 32; during operation, when the shot blaster 13 performs shot blasting on the stainless steel workpiece, the staff starts the first air pump 4 to inflate the support roller 32, and then sprays air outward from the air guide hole 41, thereby jetting and decelerating the projectiles that collide with the support roller 32. This step can jet and decelerate the projectiles that collide with the support roller 32 by providing the first air pump 4 and the air guide holes 41, thereby reducing the situation where the projectiles collide with the support roller 32 at high speed and cause damage to the support roller 32, thereby increasing the service life of the support roller 32.

[0033] Further, such as Figure 5As shown, a cleaning scraper 5 is fixedly connected to the end of the pushing plate 18; the end of the cleaning scraper 5 is in contact with the inner wall of the circulation groove 16; in this step, by providing the cleaning scraper 5, impurities adhering to the inner wall of the circulation groove 16 can be scraped off when the pushing plate 18 pushes the projectile, thereby reducing the accumulation of impurities inside the circulation groove 16 and adhering to the surface of the projectile, further reducing the adhesion of impurities to the surface of the projectile, affecting the shot blasting of the stainless steel workpiece by the projectile, and further improving the shot blasting effect on the stainless steel workpiece.

[0034] Further, such as Figure 3 to Figure 4 As shown, the bottom of the second support frame 31 is rotatably connected to a roller 6; the rollers 6 are symmetrically distributed on both sides of the bottom of the second support frame 31; this step, by providing the rollers 6, can change the sliding contact between the bottom of the second support frame 31 and the bottom of the inner wall of the support base 1 into a rolling contact between the surface of the roller 6 and the bottom of the inner wall of the support base 1, thereby reducing the friction force when the bottom of the second support frame 31 contacts the bottom of the inner wall of the support base 1, thereby reducing the wear when the bottom of the second support frame 31 contacts the bottom of the inner wall of the support base 1, and improving the stability of the second support frame 31 when moving along the inner wall of the support base 1.

[0035] Further, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a second air pump 7 is installed on the side wall of the circulation groove 16; an air guide pipe 71 is fixedly connected to the air outlet end of the second air pump 7; the other end of the air guide pipe 71 is connected to the top of the circulation groove 16; this step is provided with a second air pump 7 and an air guide pipe 71, so that the inside of the circulation groove 16 can be blown when the first conveyor belt 17 and the push plate 18 are transporting, thereby further cleaning the impurities adhered to the surface of the projectile, further reducing the impurities adhering to the surface of the projectile, affecting the shot blasting of the stainless steel workpiece by the projectile, and further improving the shot blasting effect on the stainless steel workpiece.

[0036] Further, such as Figures 2 to 3 As shown, an elastic curtain 8 is fixedly connected to the inside of the support base 1; the elastic curtain 8 is multiple and symmetrically distributed on both sides of the first support frame 12; the elastic curtain 8 is arranged between the second conveyor belt 33 and the first support frame 12; this step is provided with an elastic curtain 8, which can block the flying projectiles and impurities when the shot blasting machine 13 performs shot blasting on the stainless steel workpiece, thereby reducing the projectiles and impurities from splashing to the surroundings and polluting the surrounding environment, and reducing the loss of projectiles when the projectiles are shot blasting on the stainless steel workpiece.

[0037] Further, such as Figures 1 to 3As shown, a support seat 9 is fixedly connected to the bottom of the first guide groove 15; a collecting box 91 is slidably connected to the middle of the support seat 9; the first screen 19 is arranged above the collecting box 91; this step can collect impurities sieved by the first screen 19 and the second screen 2 by providing the support seat 9 and the collecting box 91, thereby facilitating the staff to collect and transport the impurities, further reducing the workload of the staff.

[0038] Further, such as Figures 1 to 3 As shown, a third guide groove 10 is provided in the middle of the pellet storage box 11; the third guide groove 10 is provided corresponding to the hose 111; in this step, by providing the third guide groove 10, the pellets inside the pellet storage box 11 can be guided, thereby making it easier for the pellets to enter the hose 111.

[0039] Working principle: The staff will use the driving assembly to transport the stainless steel workpiece that needs to be shot blasted inside the support base 1. At this time, the shot blaster 13 will spray the shot in the shot storage box 11 onto the surface of the stainless steel workpiece, and then the stainless steel workpiece will be shot blasted. At this time, the shot will fall downward, and then move along the guide groove 14 and the first guide groove 15, and enter the circulation groove 16. At this time, the first screen 19 will screen the shot and impurities such as the oxide layer and welding slag. The first conveyor belt 17 and the push plate 18 will push the shot, and then guide it back to the shot storage box 11 from the second guide groove 110. The staff uses the second conveyor belt 33 to blast the stainless steel workpiece. When the end of the stainless steel workpiece does not contact the other second conveyor belt 33, the staff uses the support roller 32 to support the stainless steel workpiece. When the end of the stainless steel workpiece contacts the other second conveyor belt 33, the staff pulls the second support frame 31 outward, thereby moving the second support frame 31 along the sliding groove 3, and pulls the support roller 32 out from the inside of the support base 1, so that the other side of the second support frame 31 closes the sliding groove 3. When the shot blaster 13 performs shot blasting on the stainless steel workpiece, the staff starts the first air pump 4 to inflate the support roller 32, and then sprays it outward from the air guide hole 41, thereby jetting and decelerating the projectiles that collide with the support roller 32.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stainless steel workpiece shot blasting machine, comprising a support base (1); characterized in that: The top of the support base (1) is fixedly connected to a shot storage box (11); a first support frame (12) is fixedly connected inside the support base (1); a shot blaster (13) is fixedly connected to the side wall of the first support frame (12); the shot blasters (13) are multiple and annularly symmetrically distributed on both sides of the first support frame (12); the shot blasters (13) are connected to the shot storage box (11) via a hose (111); a guide groove (14) is provided at the bottom of the support base (1); a first guide groove (15) is fixedly connected to the bottom of the guide groove (14); a circulation groove (16) is fixedly connected to the side wall of the support base (1) ; The bottom end of the first guide groove (15) is connected to the feeding port of the circulation groove (16); a first conveyor belt (17) is provided in the middle of the circulation groove (16); a push plate (18) is fixedly connected to the side wall of the first conveyor belt (17); the push plates (18) are multiple and evenly distributed on the side wall of the first conveyor belt (17); a first screen (19) is fixedly connected to the bottom of the circulation groove (16); the aperture of the first screen (19) is smaller than the diameter of the shot; a second guide groove (110) is provided between the discharging port of the circulation groove (16) and the shot storage box (11); a driving assembly is provided inside the support base (1); The driving assembly comprises a second conveyor belt (33); the second conveyor belt (33) is installed inside the support base (1); a sliding groove (3) is provided in the middle of the support base (1); a second support frame (31) is slidably connected in the middle of the sliding groove (3); a support roller (32) is rotatably connected in the middle of the second support frame (31); the second conveyor belt (33) is a pair and is symmetrically distributed on both sides of the first support frame (12); The support roller (32) is hollow; a first air pump (4) is installed on the side wall of the second support frame (31); the second support frame (31) is connected to the first air pump (4); an air guide hole (41) is opened in the middle of the support roller (32); there are a plurality of air guide holes (41) evenly distributed in the middle of the support roller (32).

2. A stainless steel workpiece shot blasting machine according to claim 1, characterized in that: A second screen (2) is fixedly connected to the middle of the push plate (18); the second screen (2) has the same aperture as the second guide groove (110).

3. A stainless steel workpiece shot blasting machine according to claim 2, characterized in that: The end of the push plate (18) is fixedly connected to a cleaning scraper (5); the end of the cleaning scraper (5) is in contact with the inner wall of the circulation groove (16).

4. A stainless steel workpiece shot blasting machine according to claim 3, characterized in that: The bottom of the second support frame (31) is rotatably connected to rollers (6); the rollers (6) are symmetrically distributed on both sides of the bottom of the second support frame (31).

5. A stainless steel workpiece shot blasting machine according to claim 4, characterized in that: A second air pump (7) is installed on the side wall of the circulation groove (16); an air guide pipe (71) is fixedly connected to the air outlet end of the second air pump (7); and the other end of the air guide pipe (71) is in communication with the top of the circulation groove (16).

6. A stainless steel workpiece shot blasting machine according to claim 5, characterized in that: An elastic barrier curtain (8) is fixedly connected inside the support base (1); the elastic barrier curtain (8) is in multiple pieces and symmetrically distributed on both sides of the first support frame (12); the elastic barrier curtain (8) is arranged between the second conveyor belt (33) and the first support frame (12).

7. A stainless steel workpiece shot blasting machine according to claim 6, characterized in that: A support seat (9) is fixedly connected to the bottom of the first guide groove (15); a collection box (91) is slidably connected to the middle of the support seat (9); and the first screen (19) is arranged above the collection box (91).

8. A stainless steel workpiece shot blasting machine according to claim 7, characterized in that: A third guide groove (10) is provided in the middle of the projectile storage box (11); the third guide groove (10) is arranged corresponding to the hose (111).

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