Multifunctional sand blasting testing machine

By designing a multi-functional sandblasting tester, the problem of traditional equipment being unable to detect and handle abrasives is solved, and the position adjustment of the detection plate and the efficient collection and cooling of abrasives are achieved.

CN119574359APending Publication Date: 2025-03-07ZHENGZHOU YEDA HIGH TECH MATERIAL
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Patent Information

Application Number
CN202411739637.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-03-07

AI Technical Summary

Technical Problem

Traditional sandblasting test machines cannot conduct directional testing of items sprayed by the sandblasting machine, the position of the detection plate is difficult to adjust, and the abrasive collection and cooling treatment are inconvenient, which affects the later use.

Method used

A multifunctional sandblasting tester is designed, including a detection plate with adjustable position, aggregate trough and spiral duct system, as well as a cooler and direct vibration equipment for convenient collection, cooling and processing of abrasives.

Benefits of technology

It realizes directional detection of the performance of the sandblaster and efficient collection and cooling treatment of abrasives, improving the comprehensiveness and efficiency of the performance detection of the sandblaster.

✦ Generated by Eureka AI based on patent content.

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Abstract

The multifunctional sand blasting testing machine mainly comprises a base, the lower portion of the base is hollow, the front side of the base is not closed, an outer cover is installed above the top face of the base, a collecting box is installed in the lower portion of the base in a sliding mode, the top face of the base is concaved inwards to form a material collecting groove, and the bottom groove face of the material collecting groove inclines towards the middle position. The device has the advantages that the upper portion of the base is sealed through the outer cover, the lifting base driven by the air cylinder to do vertical reciprocating motion is installed on one side in the outer cover, the moving frame capable of doing left-right reciprocating motion is installed on one side outside the outer cover, and the adsorption base capable of doing front-back reciprocating motion is installed on one side outside the moving frame; when the sand blasting machine is used, a worker places the sand blasting machine body on the other side of the outer cover, the detection plate is attracted to the outside of the electromagnet, the position of the detection plate can be adjusted according to actual conditions, and the impact and grinding conditions of the sand blasting machine body on the detection plate at different positions can be conveniently tested.
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Description

Technical Field

[0001] The invention relates to the technical field of sandblasting machines, in particular to a multifunctional sandblasting testing machine. Background Art

[0002] The sand blasting machine uses compressed air to transport powdered granular materials from one place to another in a pipeline. In the process of converting kinetic energy into potential energy, the high-speed moving sand particles scour the surface of the object, thereby improving the surface quality of the object.

[0003] During the production and processing of sandblasting machines, in order to better test the performance of the sandblasting machines, the sandblasting machines are tested by sandblasting test machines; however, during the testing process, the traditional sandblasting test machines cannot perform directional testing on the objects sprayed by the sandblasting machines, and the position of the testing plate cannot be conveniently adjusted, which will lead to the inability to fully test the performance of the sandblasting machines, and the sprayed abrasives are not convenient for collection and cooling, which affects the later use. Based on this, the present application proposes a multifunctional sandblasting test machine, in which the staff can adjust the position and direction of the testing plate according to the actual situation, and facilitate the collection and cooling of the abrasives, which well solves the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a multifunctional sandblasting tester to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] (II) Technical solution

[0007] In order to solve the above-mentioned related problems and achieve the desired purpose, the present invention provides the following technical solutions: a multifunctional sandblasting test machine, including a base, the bottom of the base is hollow and the front side is not closed, an outer cover is installed above the top surface of the base, a collection box is slidably installed inside the bottom of the base, the top surface of the base is concave to form a collection trough, the bottom trough surface is inclined to the middle position, and a plurality of sieve holes are opened on the bottom trough surface, a cylinder is installed on one side above the outer cover, a lifting seat is installed on the output end, and a movable frame that can reciprocate left and right is installed on one side outside the lifting seat An adsorption seat that can reciprocate back and forth is installed on the outer side of the movable frame, an electromagnet is installed on the outer side of the adsorption seat, and a detection plate is adsorbed on the outer side thereof, a sandblasting machine body is installed on the side of the outer cover away from the outside of the lifting seat, a plurality of spiral air ducts in a uniform array are installed inside the collecting box, a plurality of equipment placement slots are opened on both sides of the outside of the collecting box, and air coolers are installed inside the plurality of equipment placement slots, and their positions correspond to the plurality of spiral air ducts one by one, and the two are connected, a plurality of installation slots are opened at the lower part of the outside of the collecting box, and direct vibration equipment is installed inside each of them.

[0008] Preferably, a U-shaped assembly groove is provided at the edge of the top surface of the base, and the lower portion of the outer cover is inserted into the assembly groove.

[0009] Preferably, a plurality of spring plates in a uniform array are installed below the outside of the base, all of which are inclined upward, and rollers are installed at the outer ends of the plurality of spring plates. A plurality of limit grooves are opened on one side of the bottom surface of the collection box, and their positions correspond one-to-one to the plurality of rollers, and a plurality of wheels are installed on the bottom surfaces of the plurality of spring plates.

[0010] Preferably, a plurality of ventilation holes are provided on both sides of the outer surface of the base, and the positions of the plurality of ventilation holes correspond to the positions of the air coolers respectively.

[0011] Preferably, the outer cover has an opening on one side of its exterior, and a pull-out groove is provided on the exterior of the outer cover near the opening, and a cover door is slidably installed inside the groove.

[0012] Preferably, an assembly through hole is opened on one side of the outer cover, and a plurality of threaded columns in a circumferential array are installed on the outer surface of the outer cover close to the assembly through hole. A flange plate is installed on the outside of the sandblasting machine body, and the plurality of threaded columns all penetrate the flange plate.

[0013] Preferably, a through groove is provided on one side of the outer cover away from the outside of the assembly through hole, a plurality of uniformly arrayed limit columns are installed on both sides of the outer side of the through groove, a rubber sealing plate for sealing is installed outside the through groove, slots are provided on both sides of the outer surface of the rubber sealing plate, and a plurality of the limit columns pass through the two slots respectively.

[0014] Preferably, a first gear driven by a motor to rotate is installed on the lifting seat, and a first rack is installed on one side of the outside of the moving frame. The two are in a T shape, which passes through the lifting seat and meshes with the first gear. A fixed plate is installed on one side of the outside of the moving frame, and a second gear driven by a motor to rotate is installed on one side of the outside of the moving frame. External brackets are installed on both sides of the outside of the adsorption seat, and a second rack is installed between the two external brackets. It is slidably installed in the moving frame and meshes with the second gear.

[0015] Preferably, both sides of the inner wall of the collecting box are inclined toward the middle position, and a plurality of assembly holes are opened at the middle position of the bottom wall thereof, and discharge valves are installed in the plurality of assembly holes.

[0016] Preferably, a square hole is opened at the middle position of the exterior of the rubber sealing plate, and the first rack passes through the through groove and the square hole.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a multifunctional sandblasting test machine, which has the following beneficial effects:

[0019] 1. The multifunctional sandblasting test machine uses a base as the main body of the device, which is closed with an outer cover on the top. A lifting seat driven by a cylinder to reciprocate up and down is installed on one side inside the outer cover, and a moving frame that can reciprocate left and right is installed on one side outside the outer cover. An adsorption seat that can reciprocate forward and backward is installed on one side outside the moving frame, and an electromagnet is installed on the outside. When in use, the staff places the sandblasting machine body on the other side of the outer cover and adsorbs the detection plate to the outside of the electromagnet. The detection plate can adjust its position according to actual conditions, which is convenient for testing the impact and grinding of the sandblasting machine body on the detection plate at different positions.

[0020] 2. The multifunctional sandblasting test machine has a collecting box placed under the base. The top surface of the base is concave, and a through hole is opened on the concave surface. The abrasive falls on the concave surface and can be collected in the collecting box. At the same time, a direct vibration device is installed under the collecting box to allow the device to vibrate slightly to avoid abrasive accumulation. A spiral air duct is installed inside the collecting box, and air coolers are installed on both sides of the outside of the collecting box. The positions of the air coolers correspond to those of the spiral air duct, so that cold air passes through the spiral air duct to cool the abrasive in the collecting box and avoid the high temperature of the abrasive affecting its use.

[0021] Among them, a plurality of spring plates in a uniform array are installed under the base, a roller is installed at the front end thereof, and a plurality of limit grooves are opened on the front side of the bottom surface of the collection box. When the collection box is received into the base, the roller will be stuck in the limit groove for limiting the retention. When the collection box is pulled out, the roller will reduce the friction between the components and facilitate pulling.

[0022] Among them, wheels are installed on both sides of the bottom surface of multiple spring plates to facilitate the staff to push the entire equipment to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0024] Figure 2 A second perspective schematic diagram of the overall structure of the present invention;

[0025] Figure 3 A third perspective schematic diagram of the overall structure of the present invention;

[0026] Figure 4 For the present invention Figure 1 Schematic diagram of the internal structure;

[0027] Figure 5 It is a schematic diagram of the overall structure of the base from a first viewing angle in the present invention;

[0028] Figure 6 A second perspective schematic diagram of the overall structure of the base in the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the base in the present invention;

[0030] Figure 8 It is a schematic diagram of the overall structure of the outer cover in the present invention from a first viewing angle;

[0031] Fig. 9 A second viewing angle schematic diagram of the overall structure of the outer cover in the present invention;

[0032] Fig.10 It is a schematic diagram of the overall structure of the collection box in the present invention;

[0033] Fig.11 It is a schematic diagram of the internal structure of the collection box in the present invention;

[0034] Fig.12 It is a schematic diagram of the overall structure of the lifting seat and the moving frame in the combined state of the present invention;

[0035] Fig.13 It is a schematic diagram of the overall structure of the second rack and the adsorption seat in the combined state in the present invention;

[0036] Fig.14 It is a schematic diagram of the overall structure of the rubber sealing plate in the present invention.

[0037] In the figure: 1-base, 2-outer cover, 3-collection box, 4-cover door, 5-cylinder, 6-lifting seat, 7-detection plate, 8-flange plate, 9-sandblasting machine body, 10-wheel, 11-cooling fan, 12-spiral air duct, 13-direct vibration equipment, 14-discharge valve, 15-roller, 16-collection trough, 17-sieve hole, 18-assembly trough, 19-ventilation hole, 20-spring plate, 21-through slot, 22-group Through hole, 23-threaded column, 24-pull-out groove, 25-limiting column, 26-equipment placement groove, 27-installation groove, 28-assembly hole, 29-first gear, 30-movable frame, 31-first rack, 32-fixed plate, 33-second rack, 34-second gear, 35-adsorption seat, 36-electromagnet, 37-external bracket, 38-rubber sealing plate, 39-square hole, 40-notch, 41-limiting groove. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figure 1-14A multifunctional sandblasting test machine includes a base 1, the bottom of the base 1 is hollow and the front side is not closed, an outer cover 2 is installed above the top surface of the base 1, a collecting box 3 is slidably installed inside the bottom of the base 1, the top surface of the base 1 is concave to form a collecting trough 16, the bottom trough surface of which is inclined to the middle position, and a plurality of sieve holes 17 are opened on the bottom trough surface, a cylinder 5 is installed on one side above the outer cover 2, a lifting seat 6 is installed on the output end, a moving frame 30 that can reciprocate left and right is installed on one side outside the lifting seat 6, and an adsorption device that can reciprocate forward and backward is installed on the outer side of the moving frame 30 The outer side of the adsorption seat 35 is provided with an electromagnet 36, and a detection plate 7 is adsorbed on the outer side thereof; a sandblasting machine body 9 is installed on the side of the outer cover 2 away from the outside of the lifting seat 6; a plurality of spiral air ducts 12 in a uniform array are installed inside the collecting box 3; a plurality of equipment placement slots 26 are provided on both sides of the outside of the collecting box 3; air coolers 11 are installed inside the plurality of equipment placement slots 26, and their positions correspond one by one to the plurality of spiral air ducts 12, and the two are connected; a plurality of installation slots 27 are provided at the lower part of the outside of the collecting box 3, and direct vibration equipment 13 is installed inside each of them.

[0040] As an optional technical solution of the present invention:

[0041] A U-shaped assembly groove 18 is provided at the edge of the top surface of the base 1, and the lower part of the outer cover 2 is inserted into the assembly groove 18. The size of the assembly groove 18 is adapted to the material thickness of the outer cover 2 to ensure that the outer cover 2 can be firmly mounted.

[0042] As an optional technical solution of the present invention:

[0043] A plurality of spring plates 20 in a uniform array are installed below the outside of the base 1, all of which are tilted upward. Rollers 15 are installed at the outer ends of the plurality of spring plates 20. A plurality of limiting grooves 41 are opened on one side of the bottom surface of the collection box 3, and their positions correspond one to one with the plurality of rollers 15. A plurality of wheels 10 are installed on the bottom surfaces of the plurality of spring plates 20. The upwardly tilted spring plates 20 can support the collection box 3 to ensure that the collection box 3 is compactly combined with the base 1, and the presence of the rollers 15 can reduce the friction between the components. When the collection box 3 is received in the base 1, the rollers 15 can be inserted into the limiting grooves 41 to limit the collection box 3. At the same time, the installation of the plurality of wheels 10 must ensure that their heights are consistent so that the equipment moves smoothly.

[0044] As an optional technical solution of the present invention:

[0045] A plurality of ventilation holes 19 are provided on both sides of the outer surface of the base 1. The positions of the plurality of ventilation holes 19 correspond to the positions of the air coolers 11, respectively, so as to ensure good ventilation effect at each position and enable the cold air to flow smoothly.

[0046] As an optional technical solution of the present invention:

[0047] An opening on one side of the outer cover 2 is provided with a pull-out groove 24 on the outer side of the outer cover 2 near the opening, and a cover door 4 is slidably installed inside the cover door 4. The size of the cover door 4 is adapted to the size of the pull-out groove 24 to ensure that the cover door 4 does not shake when being pulled.

[0048] As an optional technical solution of the present invention:

[0049] An assembly through hole 22 is opened on one side of the outer cover 2, and a plurality of threaded columns 23 in a circumferential array are installed on the outer surface of the outer cover 2 near the assembly through hole 22. A flange plate 8 is installed on the outside of the sandblasting machine body 9, and the plurality of threaded columns 23 all penetrate the flange plate 8. By using the flange plate 8, sandblasting machine bodies 9 of different sizes can be conveniently installed on the outer cover 2.

[0050] As an optional technical solution of the present invention:

[0051] A through slot 21 is provided on one side of the outer cover 2 away from the outside of the assembly through hole 22, and a plurality of uniformly arrayed limit columns 25 are installed on both sides of the outer side of the through slot 21. A rubber sealing plate 38 for sealing is installed on the outside of the through slot 21, and slots 40 are provided on both sides of the outer surface of the rubber sealing plate 38. A plurality of limit columns 25 respectively pass through the two slots 40, and the outer ends of the plurality of limit columns 25 can be round heads, which are used to limit the rubber sealing plate 38 and prevent the rubber sealing plate 38 from falling off.

[0052] As an optional technical solution of the present invention:

[0053] A first gear 29 driven by a motor to rotate is installed on the lifting seat 6, and a first rack 31 is installed on one side of the outside of the moving frame 30. The two are in a T shape, which passes through the lifting seat 6 and meshes with the first gear 29. A fixing plate 32 is installed on one side of the outside of the moving frame 30, and a second gear 34 driven by a motor to rotate is installed on one side of the outside. External brackets 37 are installed on both sides of the outside of the adsorption seat 35, and a second rack 33 is installed between the two external brackets 37. It is slidably installed in the moving frame 30 and meshes with the second gear 34. By using the rack and gear assembly, the self-locking position of each component can be achieved to avoid shaking. Using this mechanism, the normal movement of each component can be achieved.

[0054] As an optional technical solution of the present invention:

[0055] Both sides of the inner wall of the collecting box 3 are inclined toward the middle position, and a plurality of assembly holes 28 are opened in the middle position of the bottom wall thereof. Discharge valves 14 are installed in the plurality of assembly holes 28 , and the collected abrasive can be discharged through the discharge valves 14 .

[0056] As an optional technical solution of the present invention:

[0057] A square hole 39 is opened at the middle of the outer portion of the rubber sealing plate 38 , and the first rack 31 passes through the through slot 21 and the square hole 39 . The rubber sealing plate 38 can seal the through slot 21 to prevent the abrasive from flying out.

[0058] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0059] When in use, the nozzle of the sandblasting machine body 9 is installed on the outer cover 2. The staff adjusts the position of the detection plate 7 according to the actual situation so that the nozzle can spray onto the detection plate 7 to detect the sandblasting condition of the abrasive. At the same time, the abrasive can fall onto the base 1 and finally fall into the collection box 3. The abrasive accumulation can be avoided by the direct vibration device 13. The cooling fan 11 works to reduce the temperature of the abrasive. After the collection box 3 is pulled out, the abrasive can be discharged from the discharge valve 14.

[0060] In summary, the characteristics, assembly methods, use processes and functions realized by each component of the multifunctional sandblasting test machine are as follows: a base 1 is used as the main body of the device, and an outer cover 2 is used to close it on the top. A lifting seat 6 driven by a cylinder 5 to reciprocate up and down is installed on one side inside the outer cover 2, and a moving frame 30 that can reciprocate left and right is installed on one side outside the outer cover 2. An adsorption seat 35 that can reciprocate back and forth is installed on one side outside the moving frame 30, and an electromagnet 36 is installed on the outside. When in use, the staff places the sandblasting machine body 9 on the other side of the outer cover 2, and adsorbs the detection plate 7 to the outside of the electromagnet 36. The detection plate 7 can adjust its position according to actual conditions, so as to facilitate the testing of the impact and grinding of the sandblasting machine body 9 on the detection plate 7 at different positions. A collecting box 3 is placed under the base 1, and the top surface of the base 1 is concave, and a through hole is opened on the concave surface. The abrasive falls onto the concave surface and can be collected in the collecting box 3 At the same time, a direct vibration device 13 is installed under the collecting box 3, so that the device can vibrate slightly to avoid abrasive accumulation, and a spiral air duct 12 is installed inside the collecting box 3, and air coolers 11 are installed on both sides of the outside of the collecting box 3, and their positions correspond to the positions of the spiral air duct 12, so that cold air can pass through the spiral air duct 12 to cool the abrasive in the collecting box 3 to avoid the high temperature of the abrasive affecting its use. A plurality of spring plates 20 in a uniform array are installed under the base 1, and a roller 15 is installed at the front end thereof. A plurality of limiting grooves 41 are opened on the front side of the bottom surface of the collecting box 3. When the collecting box 3 is received in the base 1, the roller 15 will be stuck in the limiting groove 41 for limiting the fixation. When the collecting box 3 is pulled out, the roller 15 will reduce the friction between the components for easy pulling. Wheels 10 are installed on both sides of the bottom surfaces of the plurality of spring plates 20 to facilitate the staff to push the entire equipment to move.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional sandblasting test machine, characterized in that: The invention comprises a base (1), wherein the lower part of the base (1) is hollow and the front side is not closed, an outer cover (2) is installed above the top surface of the base (1), a collecting box (3) is slidably installed inside the lower part of the base (1), the top surface of the base (1) is concave to form a collecting trough (16), the bottom trough surface of which is inclined toward the middle position, and a plurality of sieve holes (17) are opened on the bottom trough surface, a cylinder (5) is installed on one side above the outer cover (2), a lifting seat (6) is installed on the output end, a movable frame (30) capable of reciprocating left and right is installed on one side outside the lifting seat (6), an adsorption seat (35) capable of reciprocating front and back is installed on the outer side of the movable frame (30), and the An electromagnet (36) is installed on the outer side of the adsorption seat (35), and a detection plate (7) is adsorbed on the outer side thereof; a sandblasting machine body (9) is installed on the side of the outer cover (2) away from the outside of the lifting seat (6); a plurality of spiral air ducts (12) in a uniform array are installed inside the collection box (3); a plurality of equipment placement slots (26) are opened on both sides of the outside of the collection box (3); a cooling fan (11) is installed inside each of the plurality of equipment placement slots (26), and the positions of the cooling fans (11) correspond to the plurality of spiral air ducts (12) one by one, and the two are connected; a plurality of installation slots (27) are opened at the lower part of the outside of the collection box (3), and a direct vibration device (13) is installed inside each of the installation slots.

2. A multifunctional sandblasting testing machine according to claim 1, characterized in that: A U-shaped assembly groove (18) is provided at the edge of the top surface of the base (1), and the lower part of the outer cover (2) is inserted into the assembly groove (18).

3. A multifunctional sandblasting testing machine according to claim 1, characterized in that: A plurality of spring plates (20) are installed in a uniform array below the outside of the base (1), and are all inclined upward. Rollers (15) are installed at the outer ends of the plurality of spring plates (20). A plurality of limit grooves (41) are opened on one side of the bottom surface of the collection box (3), and the positions of the limit grooves correspond to the plurality of rollers (15) one by one. A plurality of wheels (10) are installed on the bottom surfaces of the plurality of spring plates (20).

4. A multifunctional sandblasting testing machine according to claim 1, characterized in that: A plurality of ventilation holes (19) are provided on both sides of the outer surface of the base (1), and the positions of the plurality of ventilation holes (19) respectively correspond to the positions of the cooling fans (11).

5. The multifunctional sandblasting testing machine according to claim 1, characterized in that: An opening is provided on one side of the outer cover (2), and a drawer slot (24) is provided on the outer side of the outer cover (2) near the opening, and a cover door (4) is slidably installed inside the outer cover.

6. A multifunctional sandblasting testing machine according to claim 1, characterized in that: An assembly through hole (22) is provided on one side of the outer cover (2), and a plurality of threaded columns (23) in a circumferential array are installed on the outer surface of the outer cover (2) near the assembly through hole (22). A flange plate (8) is installed on the outside of the sandblasting machine body (9), and the plurality of threaded columns (23) all penetrate the flange plate (8).

7. The multifunctional sandblasting testing machine according to claim 1, characterized in that: A through slot (21) is provided on one side of the outer cover (2) away from the outside of the assembly through hole (22); a plurality of uniformly arrayed limiting columns (25) are installed on both sides of the outer side of the through slot (21); a rubber sealing plate (38) for sealing is installed outside the through slot (21); notches (40) are provided on both sides of the outer surface of the rubber sealing plate (38); and a plurality of limiting columns (25) respectively pass through the two notches (40).

8. A multifunctional sandblasting testing machine according to claim 7, characterized in that: The lifting seat (6) is provided with a first gear (29) driven to rotate by a motor, and a first rack (31) is provided on one side of the outside of the moving frame (30). The two are in a T shape, which passes through the lifting seat (6) and meshes with the first gear (29). A fixing plate (32) is provided on one side of the outside of the moving frame (30), and a second gear (34) driven to rotate by a motor is provided on one side of the outside of the fixing plate (32). External brackets (37) are provided on both sides of the outside of the adsorption seat (35), and a second rack (33) is provided between the two external brackets (37). The second rack (33) is slidably installed in the moving frame (30) and meshes with the second gear (34).

9. The multifunctional sandblasting testing machine according to claim 1, characterized in that: Both sides of the inner wall of the collection box (3) are inclined toward the middle position, and a plurality of assembly holes (28) are opened at the middle position of the bottom wall, and discharge valves (14) are installed in the plurality of assembly holes (28).

10. The multifunctional sandblasting testing machine according to claim 8, characterized in that: A square hole (39) is provided at the middle position of the exterior of the rubber sealing plate (38), and the first rack (31) passes through the through groove (21) and the square hole (39).