CN216179701U - Rubber roll sand blasting equipment - Google Patents

Abstract

The utility model discloses rubber roller sand blasting equipment which comprises a sand blasting box, wherein a sealing plate is fixedly connected to the right part of the upper end surface of the sand blasting box, one side of the sealing plate is provided with a sealing groove, the upper end surface of the sand-blasting box is connected with a sealing frame in a sliding way, the lower parts of both sides of the sealing frame are fixedly connected with a locking mechanism, the middle part of the upper end surface of the sand-blasting box is provided with a sand-blasting cavity, the middle part of the inner cavity of the sand blasting cavity is fixedly connected with a magnetic filter disc, the upper part of the inner cavity of the sand blasting cavity is provided with a rotating mechanism, the lower part of the inner cavity of the sand blasting cavity is connected with an impurity bearing plate in a sliding way, the lower part of the inner cavity of the sand blasting cavity and below the impurity bearing plate are connected with an iron sand bearing plate in a sliding way, the utility model relates to the technical field of rubber roll production, and discloses a sand blasting device. This rubber roll sand blasting equipment has solved the inconvenient sand blasting of retrieving of current rubber roll sand blasting unit, has polished the problem of not enough even and lack protection machanism to the rubber roll.

Description

Rubber roll sand blasting equipment

Technical Field

The utility model relates to the technical field of rubber roller production, in particular to rubber roller sand blasting equipment.

Background

The rubber roller is a roller product which is made by taking metal or other materials as a core and coating rubber outside and vulcanizing, is mainly applied to the aspects of papermaking, printing and dyeing, printing, grain processing, metallurgy, plastic processing and the like, and the processing comprises the working procedures of roller core sand blasting, bonding treatment, rubberizing forming, cloth wrapping, iron wire winding, vulcanizing in a vulcanizing tank, surface processing and the like, wherein the roller core sand blasting is a first working procedure, and the production quality directly influences the operation of subsequent working procedures. When the existing rubber roll sand blasting device is used, sand blasting is often splashed out, and surrounding workers are injured. Meanwhile, when a part of the rubber roller sand blasting devices clamp the rubber roller, the rubber roller cannot rotate, so that the grinding of the rubber roller is not uniform enough. In addition, some rubber roll sand blasting units do not have a sand blasting recovery mechanism. In view of this, we propose a rubber roll blasting apparatus.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides rubber roller sand blasting equipment, which solves the problems that the existing rubber roller sand blasting device is inconvenient to recycle sand blasting, cannot polish rubber rollers uniformly and is lack of a protection mechanism.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a rubber roll sand blasting equipment, includes the sandblast case, sandblast case up end right part fixedly connected with closing plate, closing plate one side is provided with the seal groove, sandblast case up end sliding connection has sealed frame, sealed frame both sides lower part fixedly connected with latched device, sandblast case up end middle part is provided with the sandblast chamber, the hydrophilic magnetic filter dish of sandblast intracavity chamber middle part fixedly connected with, sandblast intracavity chamber upper portion is provided with slewing mechanism, sandblast intracavity chamber lower part sliding connection has impurity to accept the board, sandblast intracavity chamber lower part just is located impurity and accepts board below sliding connection have iron sand to accept the board, sandblast case up end just is close to the position fixedly connected with electric telescopic handle in sandblast chamber, electric telescopic handle output end fixedly connected with sandblast mechanism.

Preferably, transparent observation windows are arranged in the middle of two sides of the sealing frame, and hooks are fixedly connected to the lower portions of two sides of the sealing plate.

Preferably, the locking mechanism comprises a support frame, a rotating plate, a sliding plate, a hanging ring and a locking spring, the rotating plate is rotatably connected to the middle of the inner side of the support frame, the sliding plate is slidably connected to the right of the inner side of the support frame, the hanging ring is rotatably connected to the two ends of the sliding plate, the locking spring is fixedly connected to the middle of one side of the sliding plate, one end of the locking spring is fixedly connected with the support frame, one side of the support frame is fixedly connected with the sealing frame, and one end of the rotating plate and one end of the sliding plate are both arc-shaped.

Preferably, slewing mechanism includes driving motor, action wheel, gear belt, follows driving wheel, semi-wheel, impact bar, fixed plate, thread bush, threaded rod, pressure strip, driving motor output fixed connection action wheel, action wheel one side fixedly connected with threaded rod, threaded rod surface threaded connection has the thread bush, threaded rod one end fixedly connected with pressure strip, the inboard sliding connection of pressure strip has the roller core, the action wheel surface rotates through gear belt and is connected with from the driving wheel, from semi-wheel of driving wheel one side fixedly connected with, sandblast intracavity and lie in the semi-wheel and the hydrophilic fixedly connected with fixed plate between the magnetic filter dish, the fixed plate up end has the impact bar through hole sliding connection, the impact bar lower extreme is connected with semi-wheel sliding connection.

Preferably, the pressure strip is the elasticity material, thread bush inner chamber and pressure strip sliding connection, terminal surface and sandblast case fixed connection under the driving motor, striker rod one end and the mutual contact of parent magnetic filter dish, roller core both ends and thread bush sliding connection, the inside place that just is close to parent magnetic filter dish of sandblast case is provided with the electro-magnet, the equal fixedly connected with handle of terminal surface before impurity accepts the board and iron sand accepts the board, sandblast intracavity chamber one side just is located impurity and accepts and is provided with the vent intercommunication between board and the parent magnetic filter dish outside, vent entrance point fixedly connected with filter screen, vent inner chamber middle part is provided with the air exhauster.

Preferably, the sand blasting mechanism comprises a supporting plate, a sand collecting box, a high-pressure air tank, an air inlet pipe, a sand outlet pipe and a sand outlet nozzle, the high-pressure air tank is fixedly connected to the left part of the upper end surface of the supporting plate, the output end of the high-pressure air tank is communicated with the sand collecting box through the air inlet pipe, the lower part of one side of the sand collecting box is communicated with the sand outlet nozzle through the sand outlet pipe, the lower end surface of the sand collecting box is fixedly connected with the supporting plate, the middle part of the lower end surface of the supporting plate is fixedly connected with the sand outlet nozzle, the upper end surface of the sand blasting box is slidably connected with the supporting plate, electromagnetic valves are arranged on the outer surface of the air inlet pipe and the outer surface of the sand outlet pipe, and a check valve is arranged in the inner cavity of the air inlet pipe

(III) advantageous effects

The utility model provides rubber roller sand blasting equipment. The method has the following beneficial effects:

(1) this rubber roll sand blasting equipment, through support frame one side and sealed frame fixed connection, when fixing the roller core on the pressure strip, can promote sealed frame and remove, and laminate with the seal groove on the closing plate, rotate rotor plate extrusion sliding plate forward slip after that, and then make the link move forward, and fix it on the couple, rotate the rotor plate after that, reset, the slider moves backward under locking spring's effect, and then fix the link on the couple, play the effect of fixed sealed frame, at the during operation simultaneously, still can observe the roller core condition of polishing through transparent observation window.

(2) The rubber roll sand blasting equipment is fixedly connected with a sand blasting box through the lower end face of a driving motor, when the rubber roll sand blasting equipment starts to work, a thread sleeve can be unscrewed to enlarge the space inside a pressing plate, then two ends of a roll core are placed inside the pressing plate, the thread sleeve is screwed to tightly press the roll core by the pressing plate, then the roll core is fixed on the pressing plate, an electromagnet is electrified to magnetize a hydrophilic magnetic filter disc by the electromagnet, falling iron sand is adsorbed on the hydrophilic magnetic filter disc, then an electric telescopic rod is started to drive a sand blasting mechanism to move above the roll core, then electromagnetic valves arranged on an air inlet pipe and a sand outlet pipe are started, iron sand in a high-pressure air well in a high-pressure air tank is sprayed out from a sand outlet nozzle to polish the roll core, meanwhile, the driving motor can be started to drive a driving wheel to rotate, and the driving wheel drives the roll core to rotate through the threaded rod matched with the pressing plate, and then can carry out the omnidirectional and polish to the roller core, the action wheel passes through the gear belt and drives from the driving wheel rotation in addition, from the driving wheel through the hydrophilic magnetic filter dish of striking that half round drive impact bar does not stop, can make impurity break away from hydrophilic magnetic filter dish, can start the air exhauster simultaneously and accelerate the whereabouts speed of iron sand and impurity, after polishing the completion, close the solenoid valve on air-supply line and the play sand pipe, pulling impurity receiving plate after that, clear away impurity, can stop to supply power to the electro-magnet after that, make magnetism on the hydrophilic magnetic filter dish disappear, and then lead to the iron sand to fall into in the iron sand receiving plate, and then accomplish the recovery to the sandblast.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a half-section structure of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is an enlarged schematic view of the area B;

FIG. 5 is a schematic view of the installation structure of the threaded rod, the threaded sleeve and the pressing plate of the present invention;

FIG. 6 is a schematic view of a latch mechanism according to the present invention;

FIG. 7 is a schematic top view of the present invention.

In the figure: 1. a sand blasting box; 2. a sealing plate; 3. a sealing groove; 4. a sealing frame; 5. a transparent viewing window; 6. a latch mechanism; 61. a support frame; 62. a rotating plate; 63. a sliding plate; 64. hanging a ring; 65. a locking spring; 7. hooking; 8. a sand blasting cavity; 9. an impurity receiving plate; 10. a sand receiving plate; 11. a handle; 12. a vent; 13. a filter screen; 14. an electric telescopic rod; 15. a sand blasting mechanism; 151. a support plate; 152. a sand collection box; 153. a high pressure air tank; 154. an air inlet pipe; 155. a sand outlet pipe; 156. a sand outlet nozzle; 16. a rotating mechanism; 161. a drive motor; 162. a driving wheel; 163. a gear belt; 164. a driven wheel; 165. a half-edge wheel; 166. a striker bar; 167. a fixing plate; 168. a threaded sleeve; 169. a threaded rod; 1610. a compression plate; 17. a roll core; 18. a magnetic filter disk.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution:

the first embodiment is as follows: a rubber roll sand blasting device comprises a sand blasting box 1, a sealing plate 2 is fixedly connected to the right part of the upper end face of the sand blasting box 1, a sealing groove 3 is arranged on one side of the sealing plate 2, a sealing frame 4 is slidably connected to the upper end face of the sand blasting box 1, locking mechanisms 6 are fixedly connected to the lower parts of two sides of the sealing frame 4, a sand blasting cavity 8 is arranged in the middle of the upper end face of the sand blasting box 1, a hydrophilic magnetic filter disc 18 is fixedly connected to the middle of the inner cavity of the sand blasting cavity 8, a rotating mechanism 16 is arranged on the upper part of the inner cavity of the sand blasting cavity 8, an impurity receiving plate 9 is slidably connected to the lower part of the inner cavity of the sand blasting cavity 8 and below the impurity receiving plate 9, an electric telescopic rod 14 is fixedly connected to the upper end face of the sand blasting box 1 and a position close to the sand blasting cavity 8, a sand blasting mechanism 15 is fixedly connected to the output end of the electric telescopic rod 14, and transparent observation windows 5 are arranged in the middle parts of two sides of the sealing frame 4, sealing plate 2 both sides lower part fixedly connected with couple 7, latched device 6 includes support frame 61, rotor plate 62, sliding plate 63, link 64, locking spring 65, support frame 61 inboard middle part is rotated and is connected with rotor plate 62, support frame 61 inboard right part sliding connection has sliding plate 63, sliding plate 63 both ends are rotated and are connected with link 64, sliding plate 63 one side middle part fixedly connected with locking spring 65, locking spring 65 one end and support frame 61 fixed connection, support frame 61 one side and 4 fixed connection of sealed frame, rotor plate 62 one end and sliding plate 63 one end all set up to the arc form. Because support frame 61 one side and sealing frame 4 fixed connection, when fixing roller core 17 on pressure strip 1610, can promote sealing frame 4 and remove, and laminate with seal groove 3 on the closing plate 2, rotate rotating plate 62 and extrude the sliding plate 63 and slide forward after that, and then make link 64 move forward, and fix it on couple 7, rotate rotating plate 62 after that, reset, sliding plate 63 moves backward under locking spring 65's effect, and then fix link 64 on couple 7, play the effect of fixed sealing frame 4, simultaneously at the during operation, still can observe the condition of polishing of roller core 17 through transparent observation window 5.

The second embodiment is different from the first embodiment in that the rotating mechanism 16 includes a driving motor 161, a driving wheel 162, a gear belt 163, a driven wheel 164, a half wheel 165, a striking rod 166, a fixing plate 167, a threaded sleeve 168, a threaded rod 169 and a pressing plate 1610, the output end of the driving motor 161 is fixedly connected with the driving wheel 162, one side of the driving wheel 162 is fixedly connected with the threaded rod 169, the outer surface of the threaded rod 169 is connected with the threaded sleeve 168 in a threaded manner, one end of the threaded rod 169 is fixedly connected with the pressing plate 1610, the inner side of the pressing plate 1610 is slidably connected with a roller core 17, the outer surface of the driving wheel 162 is rotatably connected with the driven wheel 164 through the gear belt 163, one side of the driven wheel 164 is fixedly connected with the half wheel 165, the fixing plate 167 is fixedly connected between the half wheel 165 and the magnetophilic filter disc 18 and the inner cavity 8, the upper end surface of the fixing plate 167 is slidably connected with the striking rod 166 through a hole, the lower end of the striking rod 166 is slidably connected with the half wheel 165, the pressing plate 1610 is made of elastic material, the inner cavity of the threaded sleeve 168 is connected with the pressing plate 1610 in a sliding way, the lower end surface of the driving motor 161 is fixedly connected with the sand-blasting box 1, one end of the striking rod 166 is contacted with the magnetic filter disc 18, the two ends of the roller core 17 are connected with the threaded sleeve 168 in a sliding way, the electromagnet is arranged in the sand-blasting box 1 and close to the magnetic filter disc 18, the front end surface of the impurity bearing plate 9 and the front end surface of the iron sand bearing plate 10 are both fixedly connected with the handle 11, the ventilation opening 12 is arranged at one side of the inner cavity of the sand-blasting cavity 8 and positioned between the impurity bearing plate 9 and the magnetic filter disc 18 and communicated with the outside, the inlet end of the ventilation opening 12 is fixedly connected with the filter screen 13, the middle part of the inner cavity of the ventilation opening 12 is provided with the exhaust fan, the sand-blasting mechanism 15 comprises a supporting plate 151, a sand collecting box 152, a high-pressure air tank 153, an air inlet pipe 154, a sand outlet 155 and a sand-spraying nozzle 156, the left part of the upper end surface of the supporting plate 151 is fixedly connected with the high-pressure air tank 153, the output end of the high-pressure air tank 153 is communicated with the sand collection box 152 through the air inlet pipe 154, the lower part of one side of the sand collection box 152 is communicated with the sand outlet nozzle 156 through the sand outlet pipe 155, the lower end surface of the sand collection box 152 is fixedly connected with the support plate 151, the middle part of the lower end surface of the support plate 151 is fixedly connected with the sand outlet nozzle 156, the upper end surface of the sand blasting box 1 is slidably connected with the support plate 151, the outer surface of the air inlet pipe 154 and the outer surface of the sand outlet pipe 155 are respectively provided with an electromagnetic valve, and the inner cavity of the air inlet pipe 154 is provided with a check valve. Because the lower end face of the driving motor 161 is fixedly connected with the sand-blasting box 1, when the work is started, the threaded sleeve 168 can be unscrewed to enlarge the space inside the pressing plate 1610, then the two ends of the roller core 17 are placed inside the pressing plate 1610, then the threaded sleeve 168 is screwed to press the roller core 17 tightly, then the roller core 17 is fixed on the pressing plate 1610, then the electromagnet is electrified to magnetize the hydrophilic magnetic filter disc 18, so that the falling iron sand is adsorbed on the hydrophilic magnetic filter disc 18, then the electric telescopic rod 14 is started to drive the sand-blasting mechanism 15 to move above the roller core 17, then the electromagnetic valves arranged on the air inlet pipe 154 and the sand outlet pipe 155 are started, the iron sand in the high-pressure air well in the high-pressure air tank 153 is sprayed out from the sand-blasting nozzle 156 to polish the roller core 17, meanwhile, the driving wheel 162 can be driven to rotate by starting the driving motor 161, the driving wheel 162 drives the roller core 169 to rotate through the threaded rod 1610 matching with the pressing plate, and then can carry out the omnidirectional to roller core 17 and polish, action wheel 162 drives through toothed belt 163 and rotates from driving wheel 164 in addition, from driving wheel 164 through half wheel 165 drive striking pole 166 impact parent magnetic filter dish 18 that does not stop, can make impurity break away from parent magnetic filter dish 18, can start the air exhauster simultaneously and accelerate the falling speed of iron sand and impurity, after polishing the completion, close the solenoid valve on air-supply line 154 and the play sand pipe 155, pulling impurity accepting plate 9 in succession, clear away impurity, can stop supplying power to the electro-magnet in succession, make magnetism on the parent magnetic filter dish 18 disappear, and then lead to the iron sand to fall into in iron sand accepting plate 10, and then accomplish the recovery to the sandblast.

When the grinding machine starts to work, the threaded sleeve 168 can be loosened to enlarge the space inside the pressing plate 1610, then the two ends of the roller core 17 are placed inside the pressing plate 1610, the threaded sleeve 168 is screwed to enable the pressing plate 1610 to press the roller core 17 tightly, then the roller core 17 is fixed on the pressing plate 1610, then the electromagnet is electrified to enable the electromagnet to magnetize the magnetic filter disc 18, so that falling iron sand is adsorbed on the magnetic filter disc 18, then the electric telescopic rod 14 is started to drive the sand blasting mechanism 15 to move above the roller core 17, then the electromagnetic valves arranged on the air inlet pipe 154 and the sand outlet pipe 155 are started, the high-pressure air well iron sand in the high-pressure air tank 153 is sprayed out from the sand outlet nozzle 156 to grind the roller core 17, meanwhile, the driving motor 161 can be started to drive the driving wheel 162 to rotate, the driving wheel 162 drives the roller core 17 to rotate through the threaded rod 169 in cooperation with the pressing plate 1610, so that the roller core 17 can be ground in all directions, in addition, the driving wheel 162 drives the driven wheel 164 to rotate through the gear belt 163, the driven wheel 164 drives the impact rod 166 to continuously impact the magnetic filter disc 18 through the half wheel 165, so that impurities can be separated from the magnetic filter disc 18, meanwhile, the exhaust fan can be started to accelerate the falling speed of iron sand and impurities, after polishing is completed, the electromagnetic valves on the air inlet pipe 154 and the sand outlet pipe 155 are closed, then the impurity receiving plate 9 is pulled to remove the impurities, then power supply to the electromagnet can be stopped, so that magnetism on the magnetic filter disc 18 disappears, and then the iron sand falls into the iron sand receiving plate 10, so that recovery of sand blasting is completed, because one side of the supporting frame 61 is fixedly connected with the sealing frame 4, when the roller core 17 is fixed on the pressing plate 1610, the sealing frame 4 can be pushed to move and be attached to the sealing groove 3 on the sealing plate 2, then the rotating plate 62 is rotated to extrude the sliding plate 63 to slide forwards, and then make the link 64 move forward, and fix it on couple 7, rotate the rotating plate 62, reset, slide plate 63 moves backward under the effect of locking spring 65, and then fix link 64 on couple 7, play the effect of fixed seal frame 4, at the same time, can also observe the condition of polishing of roller core 17 through transparent observation window 5 at work.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Claims (6)

1. The utility model provides a rubber roll sand blasting equipment, includes sand blasting box (1), its characterized in that: the right part of the upper end face of the sand blasting box (1) is fixedly connected with a sealing plate (2), one side of the sealing plate (2) is provided with a sealing groove (3), the upper end face of the sand blasting box (1) is slidably connected with a sealing frame (4), the lower parts of the two sides of the sealing frame (4) are fixedly connected with a locking mechanism (6), the middle part of the upper end face of the sand blasting box (1) is provided with a sand blasting cavity (8), the middle part of the inner cavity of the sand blasting cavity (8) is fixedly connected with a magnetic filter disc (18), the upper part of the inner cavity of the sand blasting cavity (8) is provided with a rotating mechanism (16), the lower part of the inner cavity of the sand blasting cavity (8) is slidably connected with an impurity receiving plate (9), the lower part of the inner cavity of the sand blasting cavity (8) is positioned below the impurity receiving plate (9) and is slidably connected with an iron sand receiving plate (10), the upper end face of the sand blasting box (1) is fixedly connected with an electric telescopic rod (14) at a position close to the sand blasting cavity (8), the output end of the electric telescopic rod (14) is fixedly connected with a sand blasting mechanism (15).

2. The rubber roll blasting apparatus according to claim 1, wherein: transparent observation windows (5) are arranged in the middle of two sides of the sealing frame (4), and hooks (7) are fixedly connected to the lower portions of two sides of the sealing plate (2).

3. The rubber roll blasting apparatus according to claim 2, wherein: the locking mechanism (6) comprises a support frame (61), a rotating plate (62), a sliding plate (63), a hanging ring (64) and a locking spring (65), the middle of the inner side of the support frame (61) is rotatably connected with the rotating plate (62), the right of the inner side of the support frame (61) is slidably connected with the sliding plate (63), the two ends of the sliding plate (63) are rotatably connected with the hanging ring (64), the middle of one side of the sliding plate (63) is fixedly connected with the locking spring (65), one end of the locking spring (65) is fixedly connected with the support frame (61), one side of the support frame (61) is fixedly connected with a sealing frame (4), and one end of the rotating plate (62) and one end of the sliding plate (63) are both arranged to be arc-shaped.

4. The rubber roll blasting apparatus according to claim 3, wherein: the rotating mechanism (16) comprises a driving motor (161), a driving wheel (162), a gear belt (163), a driven wheel (164), a half wheel (165), a striking rod (166), a fixed plate (167), a thread bush (168), a threaded rod (169) and a pressing plate (1610), wherein the output end of the driving motor (161) is fixedly connected with the driving wheel (162), one side of the driving wheel (162) is fixedly connected with the threaded rod (169), the outer surface of the threaded rod (169) is in threaded connection with the thread bush (168), one end of the threaded rod (169) is fixedly connected with the pressing plate (1610), the inner side of the pressing plate (1610) is slidably connected with a roller core (17), the outer surface of the driving wheel (162) is rotatably connected with the driven wheel (164) through the gear belt (163), one side of the driven wheel (164) is fixedly connected with the half wheel (165), an inner cavity of the sand spraying cavity (8) is fixedly connected with the fixed plate (167) and is positioned between the half wheel (165) and the magnetic filter disc (18), the upper end face of the fixing plate (167) is connected with a striking rod (166) through a hole in a sliding mode, and the lower end of the striking rod (166) is connected with a half wheel (165) in a sliding mode.

5. The rubber roll blasting apparatus according to claim 4, wherein: the pressing plate (1610) is made of elastic material, the inner cavity of the threaded sleeve (168) is connected with the pressing plate (1610) in a sliding way, the lower end surface of the driving motor (161) is fixedly connected with the sand-blasting box (1), one end of the impact rod (166) is contacted with the magnetic filter disc (18), the two ends of the roller core (17) are connected with the threaded sleeve (168) in a sliding way, an electromagnet is arranged in the sandblasting box (1) and close to the magnetic filter disc (18), the front end surface of the impurity receiving plate (9) and the front end surface of the iron sand receiving plate (10) are both fixedly connected with a handle (11), a ventilation opening (12) is arranged at one side of the inner cavity of the sand-blasting cavity (8) and positioned between the impurity receiving plate (9) and the magnetic filter disc (18) to be communicated with the outside, the filter screen (13) is fixedly connected with the inlet end of the vent (12), and an exhaust fan is arranged in the middle of the inner cavity of the vent (12).

6. The rubber roll blasting apparatus according to claim 5, wherein: the sand blasting mechanism (15) comprises a supporting plate (151), a sand collecting box (152), a high-pressure air tank (153), an air inlet pipe (154), a sand outlet pipe (155) and a sand outlet nozzle (156), the left part of the upper end surface of the supporting plate (151) is fixedly connected with a high-pressure air tank (153), the output end of the high-pressure air tank (153) is communicated with the sand collection box (152) through an air inlet pipe (154), the lower part of one side of the sand collecting box (152) is communicated with a sand outlet nozzle (156) through a sand outlet pipe (155), the lower end surface of the sand collecting box (152) is fixedly connected with a supporting plate (151), the middle part of the lower end surface of the supporting plate (151) is fixedly connected with a sand outlet nozzle (156), the upper end surface of the sand-blasting box (1) is in sliding connection with the supporting plate (151), electromagnetic valves are arranged on the outer surface of the air inlet pipe (154) and the outer surface of the sand outlet pipe (155), and check valves are arranged in the inner cavity of the air inlet pipe (154).

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