A shot blasting machine for the inner wall of a steel cylinder

Abstract

The present invention discloses a shot blasting cleaning machine for the inner wall of a steel cylinder, which includes a steel cylinder bearing device, a spray gun driving device, a collection device, a separator and a dust removal system. The steel cylinder bearing device includes a movable support, a support mechanism, a restraint mechanism and a slewing bearing. An oil cylinder is provided below the movable support, and the oil cylinder can drive the movable support to rotate around the bearing seat. There are two spray gun driving devices, which are symmetrically arranged at the left and right ends of the steel cylinder bearing device. A first dust suction box is provided between the spray gun driving device on the right side and the movable support, and a second dust suction box is provided on the movable support. The second dust suction box is connected and communicated with the dust removal system through a movable dust suction device. The collection device includes a collection box and an elevator. The collection box is located below the movable support. The lower end of the elevator is connected to the collection box, and the upper end is connected to the separator. The structure of the present invention is ingenious. The frame can drive the steel cylinder to tilt and pour out the steel sand, without manual assistance, with a high degree of automation, time-saving and labor-saving, low production cost, high production efficiency and good safety.

Description

Technical Field

[0001] The present invention relates to the technical field of shot blasting machinery and equipment, and particularly relates to a shot blasting cleaning machine for the inner wall of a steel cylinder. Background Art

[0002] A shot blasting machine is a mechanical device that uses high-speed projectiles thrown by a shot blasting device to clean or strengthen the surface of workpieces. The shot blasting machine can simultaneously perform sand falling, core removal, and cleaning on castings, and can also be used for surface treatment of forgings, aluminum-magnesium alloy parts, sheet weldments, etc. In some regions, it is also called a sand blasting machine or a sand spraying machine verbally. There is already a shot blasting machine for shot blasting the inner wall of steel pipes in the prior art. Its working principle is to horizontally arrange the steel pipe on a frame, and the spray gun of the shot blasting machine extends into the steel pipe for operation. After shot blasting, the steel sand remaining inside the steel pipe is blown out by high-pressure air flow to complete the cleaning.

[0003] Since the steel cylinder has a structure with a thick middle and a thin end opening, after shot blasting with a shot blasting machine for cleaning the inner wall of a steel pipe, it is difficult to clean the steel sand inside the steel cylinder completely by high-pressure air flow. Currently, the method adopted is to unload the steel cylinder from the shot blasting machine, and manually or with the aid of a crane to raise one end of the steel cylinder to pour out the steel sand. The existing operation is time-consuming and laborious, the steel sand cleaning is difficult, manual assistance is required, the production efficiency is low, the labor cost is increased, and there are certain safety hazards. Therefore, the prior art needs to be further improved and enhanced. Summary of the Invention

[0004] Aiming at the deficiencies of the above prior art, the purpose of the present invention is to provide a shot blasting cleaning machine for the inner wall of a steel cylinder, which solves the problems that after shot blasting of the steel cylinder by the existing shot blasting machine, the steel sand inside the steel cylinder is difficult to clean, time-consuming and laborious, high in labor cost, low in automation degree, low in production efficiency, and there are safety hazards in manual cleaning.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A shot blasting cleaning machine for the inner wall of a steel cylinder includes a steel cylinder bearing device, a spray gun driving device, a collection device, a separator, a movable dust suction device, and a dust removal system. The steel cylinder bearing device includes a movable bracket, and a support mechanism, a restraint mechanism, and a slewing bearing arranged above the movable bracket. The movable bracket is horizontally arranged along its length direction, and its middle part is rotationally matched with a bearing seat arranged on the ground.

[0007] An oil cylinder is arranged below the movable bracket, and the oil cylinder can drive the movable bracket to rotate around the bearing seat.

[0008] There are two spray gun driving devices, symmetrically arranged at the left and right ends of the steel cylinder bearing device. Each spray gun driving device is provided with a spray gun, and the two spray guns face each other directly. The spray gun driving device can drive the spray gun to move horizontally.

[0009] A first dust suction box is arranged between the spray gun driving device and the movable bracket on the right side, a second dust suction box is arranged on the movable bracket, and the second dust suction box is connected and communicated with the dust removal system through a movable dust suction device.

[0010] The collecting device comprises a collecting box and an elevator. The collecting box is arranged below the movable bracket and is equipped with a screw conveyor. The lower end of the elevator is connected to one end of the collecting box, and the upper end thereof is connected to a separator.

[0011] Furthermore, the movable bracket is a rectangular structure, and the front and rear sides thereof respectively have mounting rails integrally formed therewith, and the mounting rails are provided with a plurality of groups of bolt holes.

[0012] There are two supporting mechanisms, which are fixedly installed above the movable bracket at intervals. The restraining mechanism is located between the two supporting mechanisms and is fixedly installed above the movable bracket.

[0013] Furthermore, the supporting mechanism includes a base frame and two supporting wheels. The base frame is detachably mounted on the top of the movable bracket. The two supporting wheels are arranged front and back relative to each other, and the wheel axles of the supporting wheels are rotatably matched with the base frame.

[0014] The two support wheels of one support mechanism are equipped with a motor, which is connected to the wheel axle end of the support wheel through a reducer to drive the two support wheels to rotate in the same direction.

[0015] Furthermore, the restraint mechanism includes a clamp bracket and a clamp, and the clamp bracket is fixedly installed on the top of the movable bracket, and a V-shaped groove is opened on the upper part of the clamp bracket.

[0016] The clamp is a semicircular arc structure and is located above the clamp bracket. The two ends of the clamp bracket are detachably connected to the front and rear sides of the V-shaped groove respectively.

[0017] The slewing bearing is located above the right end of the movable bracket, and its fixed part is installed on the top of the movable bracket. A central hole for the bottleneck of the steel bottle to pass through is opened at the central position of the rotating part.

[0018] Furthermore, the first dust collection box is a box structure with an open bottom, and an N-shaped notch is provided on one side close to the movable bracket. A first rubber sealing plate is arranged inside the N-shaped notch, and the first rubber sealing plate has a gap with vertical rubber penetrating to the bottom end.

[0019] A first guide sleeve is provided on the side of the first dust suction box away from the movable bracket. The spray gun guide sleeve is arranged horizontally, one end of which is connected to the first dust suction box and the other end of which can be inserted into the end of the spray gun.

[0020] A connecting pipe is provided on the top of the first dust collection box, one end of the connecting pipe is connected to the top of the first dust collection box, and the other end is connected to the dust removal system.

[0021] Furthermore, the second dust collection box is a square box body, which is located on the left side of the supporting mechanism and installed on the top of the movable bracket.

[0022] A mounting hole is provided on one side of the second dust collecting box close to the supporting mechanism, a second rubber sealing plate is arranged inside the mounting hole, and a cross-shaped gap is provided in the middle of the first rubber sealing plate.

[0023] A second guide sleeve is arranged on the side of the second dust suction box away from the supporting mechanism. The second guide sleeve is directly opposite to the mounting hole, one end of the second guide sleeve is connected and communicated with the second dust suction box, and the other end is for the end of the spray gun to penetrate.

[0024] A first right-angle elbow is arranged at the rear side of the second dust suction box, one end of the first right-angle elbow is fixedly connected to the rear side wall of the second dust suction box, and the other end is opened downward and is provided with a first flange.

[0025] Furthermore, the movable dust collection device includes a fixed box and a movable box, wherein the fixed box is a long strip box with a U-shaped cross-section, and the opening at the top thereof is covered with a rubber belt, and the left and right ends of the rubber belt are connected to the fixed box.

[0026] One end of the fixed box is provided with a transition pipe communicated with the interior thereof, and the fixed box is connected to the dust removal system through the transition pipe.

[0027] The moving box is a box body with an open bottom, and a running wheel is arranged at the lower part thereof. The moving box is located above the fixed box, and a rubber belt passes through the inside of the moving box, so that the moving box can run along the fixed box.

[0028] A second right-angle bend is provided on the front side of the mobile box, one end of the second right-angle bend is connected to the front side wall of the mobile box, and the other end can be opened upward and provided with a second flange. The second right-angle bend can be sealed and connected to the first right-angle bend, and the second dust collection box can be connected to the fixed box through the mobile box.

[0029] Furthermore, a steering roller group for supporting the rubber belt is provided inside the moving box, and the steering roller group includes two supporting rollers and two pressing rollers.

[0030] Two support rollers are arranged relatively parallel on the left and right sides of the upper part of the moving box, and two pressure rollers are arranged relatively parallel on the left and right sides of the bottom of the moving box. The front and rear ends of the support rollers and the pressure rollers are rotatably matched with the side walls of the moving box.

[0031] The rubber belt passes through the bottom of one side of the moving box and passes around the bottom of one of the pressure rollers, passes around the tops of the two support rollers in turn, passes around the bottom of the other pressure roller downward and passes out from the bottom of the other side of the moving box.

[0032] Further, the spray gun driving device includes a fixing frame, slide rails, and a sliding seat. There are two slide rails, which are horizontally arranged in parallel, one in front and the other behind, at the top of the fixing frame. The sliding seat is located above the slide rails and is in transverse sliding cooperation with the slide rails.

[0033] At the top of one end of the fixing frame close to the cylinder bearing device, there is a supporting roller, which is longitudinally horizontally arranged and is rotationally matched with the fixing frame. One end of the spray gun is fixed on the sliding seat, and the other end is placed thereon.

[0034] A first sprocket is respectively provided at both ends of the fixing frame, and a tensioning sprocket is provided at the lower part of the fixing frame. The two first sprockets are connected to the tensioning sprocket through a chain.

[0035] A speed reducer is configured on one of the first sprockets. The output end of the speed reducer is connected to the sliding seat through a chain and drives the sliding seat to move transversely along the slide rails.

[0036] Further, the collection box is a strip-shaped box body with an open top, and the screw conveyor is arranged at its bottom along the length direction of the collection box.

[0037] An inclined chute is provided above the collection box. The lower end of the chute is connected to the collection box, and its upper end corresponds to the bottom of the first dust collection box. A dust removal cover in the shape of a flared opening is provided on one side of the chute, and the dust removal cover is connected to the dust removal system through a first dust suction pipe.

[0038] By adopting the above technical solutions, the beneficial technical effects of the present invention are as follows: The structure of the present invention is ingenious. The frame can drive the cylinder to tilt and pour out the steel sand, without manual assistance, with a high degree of automation, time-saving and labor-saving, low production cost, improved production efficiency, high safety, and a movable dust suction device is adopted, which is simple to adjust, has a good dust suction effect, and reduces environmental pollution. Description of the Drawings

[0039] Figure 1 It is a schematic structural principle diagram of a certain state of a steel cylinder inner wall shot blasting cleaning machine of the present invention.

[0040] Figure 2 It is a schematic structural principle diagram of another state of a steel cylinder inner wall shot blasting cleaning machine of the present invention.

[0041] Figure 3 It is a schematic combined structure diagram of the cylinder bearing device, the first dust collection box, and the second dust collection box of the present invention.

[0042] Figure 4 It is a schematic combined structure diagram of the movable dust suction device and the second dust collection box of the present invention.

[0043] Figure 5 is Figure 4 a schematic structural diagram of a certain part in, showing the movable dust suction device.

[0044] Figure 6 It is a schematic diagram of the combined structure of the movable dust suction device, dust removal hood and dust removal system of the present invention. Specific embodiments

[0045] The present invention will be described in detail below with reference to the accompanying drawings:

[0046] Combined with Figures 1 to 6 , a shot blasting cleaning machine for the inner wall of a steel cylinder, comprising a steel cylinder carrying device 1, a spray gun driving device 2, a collecting device 3, a separator 4, a movable dust suction device 5 and a dust removal system 6. The steel cylinder carrying device 1 includes a movable bracket 11 and a support mechanism 12, a restraint mechanism 14 and a slewing bearing 15 arranged above the movable bracket 11. The movable bracket 11 is horizontally arranged along its length direction, and its middle part is rotatably matched with a bearing seat 13 arranged on the ground. An oil cylinder 16 is arranged below the movable bracket 11, and the oil cylinder 16 can drive the movable bracket 11 to rotate around the bearing seat 13.

[0047] The movable bracket 11 is of a rectangular structure. Installation guide rails 111 integrally formed with it are respectively arranged on the front and rear sides of the movable bracket 11, and a plurality of groups of bolt holes are formed in the installation guide rails 111. There are two support mechanisms 12, which are fixedly installed above the movable bracket 11 at intervals. The restraint mechanism 14 is located between the two support mechanisms 12 and is fixedly installed above the movable bracket 11.

[0048] The support mechanism 12 includes a chassis 121 and two support wheels 122. The chassis 121 is detachably installed on the top of the movable bracket 11. The two support wheels 122 are arranged opposite to each other front and back. The wheel axle of the support wheel 122 is rotatably matched with the chassis 121. One of the two support wheels 122 of one support mechanism 12 is respectively configured with a motor 123, and the motor 123 is connected to the end of the wheel axle of the support wheel 122 through a reducer 124 to drive the two support wheels 122 to rotate in the same direction.

[0049] The restraint mechanism 14 includes a clamp bracket 141 and a clamp 142. The clamp bracket 141 is fixedly installed on the top of the movable bracket 11, and a V-shaped groove is formed in its upper part. The clamp 142 is of a semi-circular arc structure and is located above the clamp bracket 141. The two ends of the clamp bracket 141 are respectively detachably connected to the front and rear sides of the V-shaped groove.

[0050] The slewing bearing 15 is located above the right end of the movable bracket 11. Its fixed part is installed on the top of the movable bracket 11, and a central hole 151 through which the neck of the steel cylinder can pass is formed at the central position of the rotating part.

[0051] There are two spray gun driving devices 2, which are symmetrically arranged at the left and right ends of the steel cylinder carrying device 1. A spray gun 7 is arranged on each spray gun driving device 2. The two spray guns 7 face each other directly, and the spray gun driving device 2 can drive the spray gun 7 to move horizontally.

[0052] A first dust box 8 is provided between the spray gun driving device 2 on the right side and the movable bracket 11. The first dust box 8 is a box structure with an open bottom, and an N-shaped notch is provided on the side close to the movable bracket 11. A first rubber sealing plate 81 is arranged on the inner side of the N-shaped notch. The first rubber sealing plate 81 vertically penetrates the rubber to the gap at the bottom.

[0053] A first guide sleeve is provided on the side of the first dust box 8 facing away from the movable bracket 11. The guide sleeve of the spray gun 7 is arranged horizontally, one end of which is connected to the first dust box 8 and the other end of which can be inserted into the end of the spray gun 7. A connecting pipe is provided on the top of the first dust box 8, one end of which is connected to the top of the first dust box 8 and the other end is connected to the dust removal system 6.

[0054] The movable bracket 11 is provided with a second dust collecting box 9, which is connected to the dust removal system 6 through a movable dust collecting device 5. The second dust collecting box 9 is a square box, located on the left side of the support mechanism 12 and installed on the top of the movable bracket 11.

[0055] A mounting hole is provided on the side of the second dust box 9 close to the support mechanism 12, a second rubber sealing plate is disposed inside the mounting hole, and a cross-shaped gap is provided in the middle of the first rubber sealing plate 81. A second guide sleeve 93 is provided on the side of the second dust box 9 away from the support mechanism 12, the second guide sleeve is directly opposite to the mounting hole, one end of the second guide sleeve is connected to the second dust box 9, and the other end is for the end of the spray gun 7 to penetrate.

[0056] A first right-angle elbow 91 is provided at the rear side of the second dust suction box 9 , one end of the first right-angle elbow 91 is fixedly connected to the rear side wall of the second dust suction box 9 , and the other end is open downward and provided with a first flange 92 .

[0057] The movable dust collecting device 5 includes a fixed box 51 and a movable box 52. The fixed box 51 is a long strip box with a U-shaped cross section, and the opening at the top is covered with a rubber belt 53. The left and right ends of the rubber belt 53 are connected to the fixed box 51. One end of the fixed box 51 is provided with a transition pipe 54 communicating with the interior thereof, and the fixed box 51 is connected to the dust removal system 6 through the transition pipe 54.

[0058] The moving box 52 is a box body with an open bottom, and a running wheel is provided at the lower part thereof. The moving box 52 is located above the fixed box 51 , and the rubber belt 53 passes through the inside of the moving box 52 , and the moving box 52 can run along the fixed box 51 .

[0059] A second right-angled elbow pipe 55 is provided on the front side of the mobile box 52. One end of the second right-angled elbow pipe 55 is connected to the front side wall of the mobile box 52, and the other end is provided with a second flange 56 facing upward. The second right-angled elbow pipe 55 can be hermetically docked with the first right-angled elbow pipe 91, and the second dust collection box 9 can communicate with the fixed box 51 through the mobile box 52.

[0060] Specifically, a turning roller group for supporting the rubber belt 53 is provided inside the mobile box 52. The turning roller group includes two support rollers 57 and two pressure rollers 58. The two support rollers 57 are arranged relatively parallel to each other on the left and right sides of the upper part of the mobile box 52, and the two pressure rollers 58 are arranged relatively parallel to each other on the left and right sides of the bottom of the mobile box 52. The front and rear ends of the support rollers 57 and the pressure rollers 58 are rotatably matched with the side walls of the mobile box 52.

[0061] The rubber belt 53 penetrates into the bottom on one side of the mobile box 52 and bypasses the bottom of one of the pressure rollers 58, then bypasses the tops of the two support rollers 57 upward in sequence, and then bypasses the bottom of the other pressure roller 58 downward and exits from the bottom on the other side of the mobile box 52.

[0062] The spray gun driving device 2 includes a fixed frame 21, a slide rail 22, and a sliding seat 23. There are two slide rails 22, which are horizontally arranged in parallel, one in front and the other behind, on the top of the fixed frame 21. The sliding seat 23 is located above the slide rail 22 and is horizontally slidably matched with the slide rail 22.

[0063] At the top of one end of the fixed frame 21 close to the cylinder loading device 1, a supporting roller 24 is provided. The supporting roller 24 is longitudinally horizontally arranged and is rotatably matched with the fixed frame 21. One end of the spray gun 7 is fixed on the sliding seat 23, and the other end is placed on it.

[0064] A first sprocket 25 is provided at each end of the fixed frame 21, and a tensioning sprocket 26 is provided at the lower part of the fixed frame 21. The two first sprockets 25 are connected to the tensioning sprocket 26 through a chain. Both ends of the chain are fixedly connected to the sliding seat 23. A speed reducer 27 is configured on one of the first sprockets 25. The output end of the speed reducer 27 is connected to the sliding seat 23 through a chain and drives the sliding seat 23 to move horizontally along the slide rail 22.

[0065] The collection device 3 includes a collection box 31 and a hoist 32. The collection box 31 is arranged below the movable bracket 11 and is configured with a screw conveyor. The lower end of the hoist 32 is connected to one end of the collection box 31, and its upper end is connected to the separator 4. Specifically, the collection box 31 is a long strip-shaped box body with an open top, and the screw conveyor is arranged along the length direction of the collection box 31 at its bottom.

[0066] Above the collection box 31, there is an inclined chute 33. The lower end of the chute 33 is connected to the collection box 31, and its upper end corresponds to the bottom of the first dust collection box 8. On one side of the chute 33, there is a dust removal cover 10 in the shape of a flared opening. The dust removal cover 10 is connected to the dust removal system 6 through a first dust suction pipe 101. The steel sand poured out from the steel cylinder falls into the bottom of the collection box 31 through the chute 33. The screw conveyor sends the steel sand into the elevator 32. The dust generated during the process of pouring the steel sand is sucked away by the dust removal cover 10 and sent into the dust removal system 6 for sedimentation and collection.

[0067] For the parts not described in the present invention, the existing technologies can be adopted or referred to for implementation.

[0068] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0069] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0070] Of course, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A steel cylinder inner wall shot blasting cleaning machine, comprising a steel cylinder carrying device, a spray gun driving device, a collecting device, a separator, a movable dust suction device and a dust removal system, It is characterized in that The cylinder bearing device includes a movable bracket and a supporting mechanism, a restraining mechanism and a slewing bearing arranged above the movable bracket. The movable bracket is arranged transversely along its length direction, and the middle part thereof is rotatably matched with a bearing seat arranged on the ground. An oil cylinder is provided below the movable bracket, and the oil cylinder can drive the movable bracket to rotate around the bearing seat; There are two spray gun driving devices, which are symmetrically arranged at the left and right ends of the cylinder carrying device. Each spray gun driving device is equipped with a spray gun, and the two spray guns are facing each other. The spray gun driving device can drive the spray gun to move horizontally. A first dust suction box is provided between the spray gun driving device and the movable bracket on the right side, a second dust suction box is provided on the movable bracket, and the second dust suction box is connected to the dust removal system through a movable dust suction device; The collecting device comprises a collecting box and an elevator. The collecting box is arranged below the movable bracket and is equipped with a screw conveyor. The lower end of the elevator is connected to one end of the collecting box, and the upper end thereof is connected to a separator. The first dust collecting box is a box structure with an open bottom, and an N-shaped notch is provided on one side of the box close to the movable bracket, and a first rubber sealing plate is arranged inside the N-shaped notch, and the first rubber sealing plate is vertically rubber-pierced to a gap at the bottom; A first guide sleeve is provided on the side of the first dust suction box away from the movable bracket, and the spray gun guide sleeve is arranged horizontally, one end of which is connected to the first dust suction box and the other end of which is for the end of the spray gun to penetrate; A connecting pipe is provided on the top of the first dust collection box, one end of the connecting pipe is connected to the top of the first dust collection box, and the other end is connected to the dust removal system; The second dust collection box is a square box, located on the left side of the support mechanism and installed on the top of the movable bracket; A mounting hole is provided on one side of the second dust collecting box close to the supporting mechanism, a second rubber sealing plate is arranged inside the mounting hole, and a cross-shaped gap is provided in the middle of the first rubber sealing plate; A second guide sleeve is provided on the side of the second dust suction box away from the support mechanism. The second guide sleeve is directly opposite to the mounting hole, one end of the second guide sleeve is connected to the second dust suction box, and the other end is for the end of the spray gun to penetrate; A first right-angle elbow is arranged at the rear side of the second dust suction box, one end of the first right-angle elbow is fixedly connected to the rear side wall of the second dust suction box, and the other end is opened downward and is provided with a first flange.

2. A cylinder inner wall shot blasting cleaning machine according to claim 1, It is characterized in that The movable bracket is a rectangular structure, and the front and rear sides thereof are respectively provided with mounting rails of an integral structure therewith, and the mounting rails are provided with a plurality of sets of bolt holes; There are two supporting mechanisms, which are fixedly installed above the movable bracket at intervals. The restraining mechanism is located between the two supporting mechanisms and is fixedly installed above the movable bracket.

3. A cylinder inner wall shot blasting cleaning machine according to claim 2, It is characterized in that The supporting mechanism includes a base frame and two supporting wheels. The base frame is detachably mounted on the top of the movable bracket. The two supporting wheels are arranged front and back relative to each other. The wheel axles of the supporting wheels are rotatably matched with the base frame. Two support wheels of one of the support mechanisms are configured with motors, and the motors are connected to the axle ends of the support wheels through speed reducers to drive the two support wheels to rotate in the same direction.

4. A shot blasting cleaning machine for the inner wall of a steel cylinder according to claim 1 or 2, characterized in that the constraint mechanism includes a clamp bracket and a clamp. The clamp bracket is fixedly installed on the top of the movable bracket, and a V-shaped groove is formed in its upper part; The clamp is of a semi-circular arc structure and is located above the clamp bracket. The two ends of the clamp bracket are respectively detachably connected to the front and rear sides of the V-shaped groove; The slewing bearing is located above the right end of the movable bracket. Its fixed part is installed on the top of the movable bracket, and a central hole through which the neck of the steel cylinder can pass is formed at the central position of the rotating part.

5. A shot blasting cleaning machine for the inner wall of a steel cylinder according to claim 1, characterized in that The movable dust suction device includes a fixed box and a movable box. The fixed box is a long box with a U-shaped cross-section. The opening at the top is covered with a rubber belt, and the left and right ends of the rubber belt are connected to the fixed box; One end of the fixed box is provided with a transition pipe communicating with its interior, and the fixed box is connected and communicated with the dust removal system through the transition pipe; The movable box is a box with an open bottom. It is provided with walking wheels at its lower part. The movable box is located above the fixed box, and the rubber belt passes through the interior of the movable box. The movable box can walk along the fixed box; A second right-angle elbow is provided on the front side of the movable box. One end of the second right-angle elbow is connected to the front side wall of the movable box, and the other end is provided with a second flange facing upward. The second right-angle elbow can be hermetically docked with the first right-angle elbow, and the second dust suction box can communicate with the fixed box through the movable box.

6. A shot blasting cleaning machine for the inner wall of a steel cylinder according to claim 5, characterized in that A turning roller group for supporting the rubber belt is arranged inside the movable box. The turning roller group includes two support rollers and two pressure rollers; The two support rollers are arranged relatively parallel on the left and right sides of the upper part of the movable box, and the two pressure rollers are arranged relatively parallel on the left and right sides of the bottom of the movable box. The front and rear ends of the support rollers and the pressure rollers are rotatably matched with the side walls of the movable box; The rubber belt penetrates into the bottom of one side of the movable box and bypasses the bottom of one of the pressure rollers, then passes upward around the tops of the two support rollers in sequence, and then passes downward around the bottom of the other pressure roller and exits from the bottom of the other side of the movable box.

7. A shot blasting cleaning machine for the inner wall of a steel cylinder according to claim 1, characterized in that The spray gun driving device includes a fixed frame, slide rails, and a sliding seat. There are two slide rails, which are horizontally arranged in parallel, one in front and one behind, on the top of the fixed frame. The sliding seat is located above the slide rails and is horizontally slidably matched with the slide rails; A supporting roller is provided at the top of one end of the fixed frame close to the steel cylinder bearing device. The supporting roller is longitudinally horizontally arranged and is rotatably matched with the fixed frame. One end of the spray gun is fixed on the sliding seat, and the other end is placed on it; A first sprocket is provided at each end of the fixed frame, and a tensioning sprocket is provided at the lower part of the fixed frame. The two first sprockets are connected to the tensioning sprocket through a chain; One of the first sprockets is configured with a speed reducer. The output end of the speed reducer is connected to the sliding seat through a chain and drives the sliding seat to move horizontally along the slide rails.

8. A shot blasting cleaning machine for the inner wall of a steel cylinder according to claim 1, It is characterized in that the collection box is a long strip-shaped box body with an open top, and the screw conveyor is arranged at its bottom along the length direction of the collection box; a chute is arranged above the collection box in an inclined manner. The lower end of the chute is connected to the collection box, and its upper end corresponds to the bottom of the first dust collection box. A dust removal hood in the shape of a flared opening is arranged on one side of the chute, and the dust removal hood is connected to the dust removal system through a first dust suction pipe.

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