Shot blasting machine for inner wall of steel bottle

Abstract

The application discloses a steel bottle inner wall shot blasting cleaning machine, which comprises a sand blasting chamber, a screw conveyor, an elevator, a separator, a shot supply system, a shot blasting system, a dust removal system, an electric control system and a maintenance platform. A shot sand collecting hopper in the sand blasting chamber is communicated with the screw conveyor, the discharge end of the screw conveyor is communicated with the pipeline end of the elevator, the discharge port of the elevator is communicated with the feeding port of the separator, the lower end of the separator is fixedly installed with and communicated with the shot supply system, the discharge end of the shot supply system is connected to the shot blasting system, the shot blasting system supplies the shot to the sand blasting pipe of the sand blasting chamber through the pipeline, the dust removal system is arranged behind the sand blasting chamber, the maintenance platform is arranged above the sand blasting chamber and the dust removal system, and the electric control system is arranged beside the sand blasting chamber. The sand blasting chamber comprises a general support, a shot blasting mechanism, a self-rotation mechanism and a bottle supporting mechanism. The application mainly aims at the cleaning of the inner wall of the steel bottle, realizes the simultaneous cleaning of multiple stations, can bring better cleaning effect, and is high in cleaning efficiency and low in labor intensity.

Description

Technical Field

[0001] This invention relates to the field of shot peening machine technology, and specifically to a shot peening machine for the inner wall of a steel cylinder. Background Technology

[0002] Shot blasting machines are devices that use high-speed shot jets ejected by shot blasters to clean or strengthen metal surfaces. Due to their high efficiency, economy, and environmental friendliness, shot blasting has gradually replaced older manual grinding or pickling processes, becoming an indispensable procedure in metal processing. Shot blasting machines are mainly used to treat the internal cavities of complex castings and complex steel structures (areas that traditional shot blasting cannot reach), primarily removing adhering sand, rust, scale, and dirt. Traditional manual shot blasting machines place the workpiece in the blasting chamber before blasting; however, this equipment has a limitation: it can only blast the top and sides of the workpiece. When cleaning the inner walls of objects like liquefied gas cylinders or oxygen cylinders, whose length may be several times their diameter and whose opening diameter is small, the rebounding shot cannot enter the cylinder, resulting in the inability to remove rust from the inner walls and affecting the cleaning effect. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a shot blasting machine for cleaning the inner wall of a steel cylinder.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a shot blasting cleaning machine for the inner wall of a steel cylinder, comprising a shot blasting chamber, a screw conveyor, an elevator, a separator, a shot supply system, a shot blasting system, a dust removal system, an electrical control system, and a maintenance platform. The shot collection hopper in the shot blasting chamber is connected to the screw conveyor. The discharge end of the screw conveyor is connected to the end of the elevator's pipe. The discharge port of the elevator is connected to the inlet of the separator. The lower end of the separator is fixedly installed with and connected to the shot supply system. The discharge end of the shot supply system is connected to the shot blasting system. The shot blasting system supplies shot to the shot blasting pipe of the shot blasting chamber through a pipe. The dust removal system is located behind the shot blasting chamber, and a dust removal pipe is provided between it and the separator. The maintenance platform is mounted above the shot blasting chamber and the dust removal system via a fixed bracket. The electrical control system is located beside the shot blasting chamber, and its circuitry controls the operation of each system. The sandblasting chamber includes a main support frame, a shot blasting mechanism, a rotation mechanism, and a bottle support mechanism. The main support frame includes a base, supporting columns, a crossbeam, a guide bracket, a shot collection hopper, and a working platform. The supporting columns are vertically fixed on the base, and the crossbeam is mounted on the top of the supporting columns. The working platform is fixed in the middle of the main support frame, and the shot collection hopper is fixed below the working platform. The guide brackets are fixed at an inclined angle on both sides of the main support frame, symmetrical to each other.

[0005] The shot peening mechanism includes a shot gun bracket, a pulley system, a pulley power unit, and several sandblasting pipes. The pulley system comprises two symmetrical sets of carriages, each with guide wheels installed on its inner side. The two sets of carriages are slidably mounted on corresponding guide supports. The shot gun bracket is fixedly mounted on the two sets of carriages. The several sandblasting pipes are vertically fixed to the shot gun bracket via shot gun holders, and their lower ends are connected to the shot peening system via flexible hoses. A tensioning bracket is also fixedly installed on the inner side of each carriage. The pulley power unit includes a reduction motor, a drive shaft, a drive sprocket, a driven sprocket, a transmission sprocket, and a chain. The reduction motor is fixedly mounted on the main support. On the base, a transverse drive shaft is rotatably mounted at the bottom of the guide bracket. Driven sprockets are coaxially fixed at both ends of the drive shaft, and a drive sprocket is coaxially fixed at the end near the installation position of the reduction motor. A rotating drive sprocket is fixedly mounted in the middle of the guide bracket, near the outer side of the work platform. A motor sprocket is coaxially fixed at the end of the shaft of the reduction motor. The motor sprocket is connected to the drive sprocket via a first chain. The driven sprocket is connected to the drive sprocket via a second chain. The two ends of the second chain are fixedly connected to the tensioning frame of the slide after wrapping around the driven sprocket and the drive sprocket once, which can drive the sandblasting pipe to be inserted into the steel cylinder from bottom to top.

[0006] Furthermore, the rotation mechanism includes a rotation power unit and several rotation supports for each workstation. The work platform has multiple mounting holes, each corresponding to a rotation support. Each rotation support includes a support base, a bearing, a turntable, and a driven pulley. The support base is fixedly mounted on the work platform via a connecting flange and is hollow inside, with the bearing coaxially fixed therein. The lower half of the turntable is inserted into the bearing, and its upper half is positioned above the support base. The driven pulley is coaxially fitted onto the upper middle part of the turntable. The rotation power unit includes multiple power motors, which are fixed to a support beam mounted on the upper middle part of the guide bracket via motor brackets. A drive pulley is coaxially fixed to the output end of each power motor, and the drive pulley is connected to the driven pulley on the rotation support via a belt drive.

[0007] Furthermore, the bottle-supporting mechanism includes a guide rod, an upper bottle-supporting device, and a lower bottle-supporting device. The guide rod is fixedly installed between the top crossbeam of the guide bracket and the working platform. Both the upper and lower bottle-supporting devices are slidably installed on the guide rod. The upper bottle-supporting device includes an upper bracket, several cylinders, and pressure caps corresponding to the ends of the cylinder telescopic rods. A sliding bushing is fixedly installed on the rear side of the upper bracket and coaxially fitted onto the guide rod. The cylinders are vertically fixed on the upper bracket, and their telescopic rods pass downward through the upper bracket and are rotatably mounted with pressure caps. The lower bottle-supporting device includes a fixed frame, a sliding frame, several support rollers, and a handwheel. The fixed frame is fixedly installed on the front side of the sliding frame and has several transverse sliding grooves. The support rollers are slidably installed in the corresponding sliding grooves through support roller supports. Each pair of support rollers forms a group, allowing adjustment of the distance between adjacent support rollers. The sliding frame is slidably installed on the guide rod. The handwheel is rotatably installed behind the sliding frame, allowing adjustment and fixing of the position of the sliding frame relative to the guide rod.

[0008] Furthermore, the main support frame includes four support columns, two long and two short, which are vertically fixed at the four corners of the base. The two short support columns are located on the front side of the base, and the two long support columns are located on the rear side of the base. The working platform is fixedly mounted on the top of the short support columns and the middle of the long support columns.

[0009] Furthermore, the lower side wall of the shot collection hopper is provided with a sandblasting pipe insertion hole corresponding to the rotating support. The sandblasting pipe can pass through the corresponding sandblasting pipe insertion hole. A rubber sealing plate is fixedly installed on the outside of the sandblasting pipe insertion hole, and a corresponding wear-resistant conical guide is installed on the inside of the sandblasting pipe insertion hole, which is coaxially arranged with the turntable in the rotating support. The bottom of the shot collection hopper is also provided with multiple maintenance windows, and each maintenance window is equipped with a maintenance cover plate on its outside.

[0010] Furthermore, the included angle between the guide bracket and the base is 84°, and the sandblasting pipe, the central axis of the rotating support, the guide rod, the center line of the roller shaft, the cylinder telescopic rod, and the guide bracket are all parallel to each other.

[0011] Furthermore, the sandblasting pipe is made of steel pipe and comes in various lengths, allowing for easy disassembly and replacement according to actual production needs.

[0012] Furthermore, the turntable includes an upper half and a lower half, which are sequentially and fixedly connected and integrally formed. The upper half is funnel-shaped and has a steel cylinder insertion hole inside. A sealing cone support is provided on the side wall of the funnel. The lower half is hollow cylindrical and has a sandblasting pipe channel inside. A protective sleeve is installed inside the sandblasting pipe channel, and its inner diameter is larger than the outer diameter of the sandblasting pipe.

[0013] Furthermore, the top crossbeam of the guide bracket is also equipped with a fall prevention device, including a support arm and a suspension chain. The top of the support arm is provided with a connecting lug, the upper end of the suspension chain is hung on the connecting lug, and the lower end of the suspension chain is connected to the upper bracket of the upper bottle support device.

[0014] Furthermore, each power motor in the self-rotating power unit is capable of pulling at least one self-rotating support.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention is mainly aimed at cleaning the inner wall of steel cylinders, realizing simultaneous cleaning of multiple stations, which can bring better cleaning effect, high cleaning efficiency and low labor intensity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a left view of the overall structure of the present invention;

[0019] Figure 3 This is a top view of the overall structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the overall structure of the sandblasting chamber in this invention;

[0021] Figure 5 This is a front view of the sandblasting chamber in this invention;

[0022] Figure 6 This is a schematic diagram of the overall support structure in the sandblasting chamber of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the slide in the sandblasting chamber of the present invention;

[0024] Figure 8 This is a schematic diagram of the rotating support in the sandblasting chamber of the present invention;

[0025] Figure 9 for Figure 8 Longitudinal sectional view of the middle structure;

[0026] Figure 10 This is a schematic diagram of the bottle-supporting mechanism in the sandblasting chamber of the present invention;

[0027] Figure 11 for Figure 10 Top view of the structure;

[0028] Figure 12 for Figure 10 A cross-sectional view along the AA direction;

[0029] In the diagram: 1. Sandblasting chamber, 2. Screw conveyor, 3. Elevator, 4. Separator, 5. Shot supply system, 6. Shot peening system, 7. Dust removal system, 7. Dust removal pipeline, 8. Maintenance platform, 9. Electrical control system, 10. Foundation, 11. Main support, 12. Shot peening mechanism, 13. Rotation mechanism, 14. Bottle support mechanism, 15. Sprocket cover, 16. Sealing cover, 17. Fall protection device;

[0030] 110. Base, 111. Long support column, 112. Short support column, 113. Guide bracket, 114. Working platform, 115. Shot and sand collection hopper, 116. Mounting hole, 117. Support beam, 118. Rubber sealing plate, 119. Inspection cover plate, 121. Spray gun bracket, 122. Slide, 123. Gear motor, 124. Drive shaft, 125. Drive sprocket, 126. Driven sprocket, 127. Transmission sprocket, 128. Sandblasting pipe, 129. Spray gun holder, 1221. Guide wheel, 1222. Tensioner, 130. Rotating support, 131 132. Support base, 133. Turntable, 134. Driven pulley, 135. Bearing, 136. Cylinder insertion hole, 137. Sandblasting pipe channel, 138. Sheath, 139. Connecting flange, 140. Power motor, 141. Guide rod, 142. Upper bottle support device, 143. Lower bottle support device, 144. Upper bracket, 145. Cylinder, 146. Cap, 147. Sliding bushing, 148. Fixed frame, 149. Sliding frame, 150. Support roller, 151. Handwheel, 152. Sliding groove, 153. Support roller support, 171. Rod end bearing connector, 18. Support arm. Detailed Implementation

[0031] It should be noted that in the description of this invention, terms such as "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components of this invention and do not specifically mean that any component in this invention must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this invention.

[0032] Furthermore, in this invention, the terms "first," "second," "number one," and "number two," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of those features.

[0033] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings:

[0035] like Figures 1 to 3 As shown, a shot blasting machine for cleaning the inner wall of a steel cylinder is installed on a foundation 10 and includes a shot blasting chamber 1, a screw conveyor 2, an elevator 3, a separator 4, a shot supply system 5, a shot blasting system 6, a dust removal system 7, an electrical control system 9, and a maintenance platform 8. The shot blasting chamber 1 can be equipped with multiple machine positions at the same time according to actual processing needs, which are fixed in sequence and arranged in parallel. The bottom end of the shot collection hopper in the sandblasting chamber 1 is connected to the screw conveyor 2 located below it, and the discharge end of the screw conveyor 2 is connected to the end of the pipe of the elevator 3. The elevator 3 is vertically located behind the sandblasting chamber 1, and its upper discharge port is connected to the inlet of the separator 4. The lower end of the separator 4 is fixedly installed with and connected to the shot supply system 5. The discharge end of the shot supply system 5 is connected to the shot peening system 6. The shot peening system 6 supplies shot to the sandblasting pipe of the sandblasting chamber 1 through a flexible pipe. The dust removal system 7 is located behind the elevator 3, and a dust removal pipe 71 is provided between it and the separator 4. The maintenance platform 8 is located above the sandblasting chamber 1 and the dust removal system 7 through a fixed bracket. The electrical control system 9 is located on the side of the sandblasting chamber 1 and controls the operation of each system through wiring.

[0036] Combination Figures 4 to 6As shown, the sandblasting chamber 1 includes a main support 11, a shot peening mechanism 12, a rotation mechanism 13, and a bottle-supporting mechanism 14. The main support 11 includes a base 110, two long support columns 111, two short support columns 112, a crossbeam, two guide supports 113, a working platform 114, and a shot collection hopper 115. The base 110 is a frame structure formed by welding square tubing. Four support columns are vertically fixed at the four corners of the base 110. Two short support columns 112 are located at the front of the base 110, and two long support columns 111 are located at the rear of the base 110. Crossbeams are fixedly installed at the top of the two long support columns 111 to increase stability. The working platform 114 is fixedly installed at the top of the short support columns 112. The long support column 111 is inclined and located at the middle height of the main support 11. The angle between the working platform 114 and the base 110 is 6°. The working platform 114 is also provided with multiple mounting holes 116, which are equally spaced and arranged in a straight line. The shot collection hopper 115 is fixedly installed directly below the working platform 114. Two guide supports 113 are fixed at an inclined angle on the left and right sides of the working platform 114, extending from the base 110 to the top of the long support column 111, symmetrical to each other. A top crossbeam is fixedly mounted on the top of the support column 111. The angle between the guide supports 113 and the base 110 is 84°. At the same time, a support crossbeam 117 is fixedly installed in the upper middle part of the two guide supports 113, located above the working platform 114.

[0037] The shot peening mechanism 12 includes a shot gun support 121, a pulley system, a pulley power unit, and several sandblasting pipes 128. The pulley system includes two sets of symmetrically arranged carriages 122. Figure 7As shown, each set of slides 122 has guide wheels 1221 installed at the four corners of its inner side via a pivot. The two sets of slides 122 are slidably mounted on the guide brackets 113 on the corresponding sides via the guide wheels 1221. A tensioning bracket 1222 is also fixedly installed on the inner side of the slide 122. The upper and lower ends of the tensioning bracket 1222 are respectively provided with hanging holes. The spray gun bracket 121 is horizontally mounted on the two sets of slides 122 and fixed thereto. Several sandblasting pipes 128 are vertically fixed on the spray gun bracket 121 via corresponding spray gun seats 129. The lower end of the sandblasting pipe 128 is connected to the shot peening system 6 via a hose. The pulley power unit includes a reduction motor 123, a drive shaft 124, a drive sprocket 125, a driven sprocket 126, a drive sprocket 127, and multiple chains. The reduction motor 123 is fixedly mounted on the base 110 of the main support 11 via a motor bracket, and the end of its output shaft is coaxially fixed to a motor sprocket via a key. The bottom ends of the two guide supports 113 are rotatably mounted with a transversely penetrating drive shaft 124 via bearings. The two ends of the drive shaft 124 are coaxially fixed with driven sprockets 126, and the end near the installation position of the reduction motor 123 is coaxially fixed with a drive sprocket 125. The outer middle part of the two guide supports 113 and the two ends near the working platform 114 are all equipped with rotatable drive sprockets 127 via seated bearings and shafts. The aforementioned motor sprocket is connected to the drive sprocket 125 via a first chain. The driven sprocket 126 is connected to the transmission sprocket 127 on the same side via a second chain. The two ends of the second chain, after wrapping around the driven sprocket 126 and the transmission sprocket 127 once, are fixedly connected to the tension bracket 1222 of the slide 122 to ensure the synchronous parallel lifting and lowering of the spray gun bracket 121. The reduction motor 123 drives the drive sprocket 125 to rotate, which in turn drives the driven sprocket 126 to rotate via the transmission shaft 124. This, in turn, allows the sandblasting pipe 128 on the spray gun bracket 121 to be inserted from bottom to top into the inverted steel cylinder workpiece, enabling the shot to be sprayed while moving upwards. A sprocket cover 15 is installed on the outside of the aforementioned chains to ensure safety during operation and prevent accidents.

[0038] Combination Figure 8 and Figure 9As shown, the self-rotating mechanism 13 includes a self-rotating power unit and several self-rotating support 130s for each workstation. Each self-rotating support 130 is fixedly installed in a corresponding mounting hole 116 on the work platform 114. Each support 130 includes a support base 131, a bearing 134, a turntable 132, and a driven pulley 133. The support base 131 is columnar and hollow inside. A connecting flange 138 is fixedly installed on its outer side wall and integrally formed with it. A reinforcing rib is added between the support base 131 and the connecting flange 138. The support base 131 is coaxially interference-fitted with a deep groove ball bearing 134, and bearing caps are fixedly installed at both ends. The turntable 132 is inserted into the bearing 134 and includes an upper half and a lower half, which are sequentially fixed and integrally formed. The upper half of the turntable is funnel-shaped and protrudes above the support base 131. It has a cylinder insertion hole 135 inside. The inner side wall of the funnel-shaped turntable is provided with a sealing cone support, which can adapt to the insertion of cylinders of different sizes and ensure relative sealing. The lower half of the turntable is columnar and is interference-fitted into the inner ring of the bearing 134. It has a sandblasting pipe channel 136 inside. The inner diameter of the sandblasting pipe channel 136 is larger than the outer diameter of the sandblasting pipe 128. The cylinder insertion hole 135 and the inner side of the sandblasting pipe channel 136 are fixedly installed with a protective sleeve 137. The driven pulley 133 is coaxially fixed to the upper middle part of the turntable 132 and integrally formed with it. The self-rotating power unit includes multiple power motors 139, each vertically fixed to the rear side of the support beam 117 via a corresponding motor bracket. Each power motor 139 has a drive pulley coaxially fixed to its output end. The drive pulley is connected to the driven pulley 133 in the self-rotating support 130 via a belt drive. According to actual design requirements, each power motor 139 can drive one or more adjacent self-rotating supports 130 to rotate. To ensure shot peening sealing, a sealing cover 16 is installed on the outside of the multi-station self-rotating support 130.

[0039] Combination Figures 10 to 12As shown, the bottle-holding mechanism 14 includes two guide rods 140, an upper bottle-holding device 141, and a lower bottle-holding device 142. The two guide rods 140 are fixedly installed between the top crossbeam of the guide bracket and the working platform 114, and are parallel to each other. The upper bottle-holding device 141 and the lower bottle-holding device 142 are both slidably installed on the guide rods 140. The upper bottle support device 141 includes an upper support 143, several cylinders 144, and pressure caps 145 correspondingly installed at the ends of the cylinder telescopic rods. A sliding bushing 146 is fixedly installed on the rear side of the upper support 143. The sliding bushing 146 is coaxially fitted on two guide rods 140 and can slide up and down along them. The cylinders 144 are fixed vertically on the upper support 143 at equal intervals and aligned with the work position of the self-rotating support 130. The cylinder telescopic rod passes downward through the upper support 143 and the pressure cap 145 is rotatably installed at its end through the rod end bearing connector 153. The longitudinal section of the pressure cap 145 is V-shaped, which corresponds to wrapping the bottom of the steel cylinder workpiece. The lower bottle support device 142 includes a fixed frame 147, a sliding frame 148, multiple support rollers 149, and a handwheel 150. The fixed frame 147 is fixedly installed on the front side of the sliding frame 148 and has several parallel horizontal sliding grooves 151. Each support roller 149 is slidably installed in the corresponding sliding groove 151 through a support roller support 152. Every two adjacent support rollers 149 form a group, and the distance between two adjacent support rollers 149 can be adjusted horizontally along the sliding groove 151 to support the corresponding steel cylinder workpiece. The sliding frame 148 is slidably installed on two guide rods 140. The handwheel 150 is rotatably installed directly behind the sliding frame 148 and can adjust and fix the height position of the sliding frame 148 relative to the guide rods 140.

[0040] The guide support is also equipped with a fall prevention device 17 on the top crossbeam, which includes a support arm 171 and a hand-operated suspension chain. The top of the support arm 171 is fixedly provided with a connecting lug. The upper end of the hand-operated suspension chain is hung on the connecting lug, and the lower end of the hand-operated suspension chain is connected to the upper bracket 143 in the above-mentioned upper bottle support device 141. This device prevents the bottle support device 141 from falling suddenly while it is raised and lowered.

[0041] Furthermore, combined Figure 5 As shown, the lower side wall of the shot collection hopper 115 is provided with multiple sandblasting pipe insertion holes corresponding to the rotating support 130. The sandblasting pipe 128 can pass through the corresponding sandblasting pipe insertion hole. A rubber sealing plate 118 is fixedly installed on the outside of the sandblasting pipe insertion hole to ensure the sealing of the shot collection hopper 115 and prevent shot from splashing out. The inside of the sandblasting pipe insertion hole is provided with a corresponding wear-resistant conical guide, which is coaxially arranged with the turntable 132 in the rotating support 130, for supporting and guiding the sandblasting pipe 128. The bottom of the shot collection hopper 115 is also provided with multiple maintenance windows, and each maintenance window is equipped with an openable and closable maintenance cover 119 on its outside.

[0042] Furthermore, the central axis of the aforementioned sandblasting pipe 128, the rotating support 130, the guide rod 140, the center line of the rotating shaft of the support roller 149, the telescopic rod of the cylinder 144, and the guide bracket 113 are all relatively parallel.

[0043] Preferably, the aforementioned sandblasting pipe 128 is made of steel pipe and comes in various lengths, allowing for disassembly and replacement according to actual production needs to meet the requirements for cleaning the inner walls of steel cylinder workpieces of different lengths.

[0044] The technical features not described or mentioned in the above embodiments can be achieved by adopting or referencing relevant technical solutions in the prior art.

[0045] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A shot blasting machine for cleaning the inner wall of a steel cylinder, comprising a blasting chamber, a screw conveyor, an elevator, a separator, a shot supply system, a shot blasting system, a dust removal system, an electrical control system, and a maintenance platform. The shot collection hopper in the blasting chamber is connected to the screw conveyor; the discharge end of the screw conveyor is connected to the end of the elevator's pipe; the discharge port of the elevator is connected to the inlet of the separator; the lower end of the separator is fixedly installed with and connected to the shot supply system; the discharge end of the shot supply system is connected to the shot blasting system; the shot blasting system supplies shot to the blasting pipe of the blasting chamber through a pipe; the dust removal system is located behind the blasting chamber, and a dust removal pipe is provided between it and the separator; the maintenance platform is mounted above the blasting chamber and the dust removal system via a fixed bracket; the electrical control system is located beside the blasting chamber, and the circuit controls the operation of each system. Its features are: The sandblasting chamber includes a main support frame, a shot blasting mechanism, a rotation mechanism, and a bottle support mechanism. The main support frame includes a base, supporting columns, a crossbeam, guide supports, a shot collection hopper, and a working platform. The supporting columns are vertically fixed on the base, and the crossbeam is mounted on the top of the supporting columns. The working platform is fixed in the middle of the main support frame, and the shot collection hopper is fixed below the working platform. The guide supports are fixed at an inclined angle on both sides of the main support frame, symmetrical to each other. The shot peening mechanism includes a shot gun bracket, a pulley system, a pulley power unit, and several sandblasting pipes. The pulley system comprises two symmetrical sets of carriages, each with guide wheels installed on its inner side. The two sets of carriages are slidably mounted on corresponding guide supports. The shot gun bracket is fixedly mounted on the two sets of carriages. The several sandblasting pipes are vertically fixed to the shot gun bracket via shot gun holders, and their lower ends are connected to the shot peening system via flexible hoses. A tensioning bracket is also fixedly installed on the inner side of each carriage. The pulley power unit includes a reduction motor, a drive shaft, a drive sprocket, a driven sprocket, a transmission sprocket, and a chain. The reduction motor is fixedly mounted on the main support. On the base, a transverse drive shaft is rotatably mounted at the bottom of the guide bracket. Driven sprockets are coaxially fixed at both ends of the drive shaft, and a drive sprocket is coaxially fixed at the end near the installation position of the reduction motor. A rotating drive sprocket is fixedly mounted in the middle of the guide bracket, near the outer side of the work platform. A motor sprocket is coaxially fixed at the end of the shaft of the reduction motor. The motor sprocket is connected to the drive sprocket through a first chain. The driven sprocket is connected to the drive sprocket through a second chain. The two ends of the second chain are fixedly connected to the tensioning frame of the slide after wrapping around the driven sprocket and the drive sprocket once, which can drive the sandblasting pipe to be inserted into the steel cylinder from bottom to top. The bottle-supporting mechanism includes a guide rod, an upper bottle-supporting device, and a lower bottle-supporting device. The guide rod is fixedly installed between the top crossbeam of the guide bracket and the working platform. Both the upper and lower bottle-supporting devices are slidably installed on the guide rod. The upper bottle-supporting device includes an upper bracket, several cylinders, and pressure caps corresponding to the ends of the cylinder telescopic rods. A sliding bushing is fixedly installed on the rear side of the upper bracket and coaxially fitted onto the guide rod. The cylinders are vertically fixed on the upper bracket, and their telescopic rods pass downward through the upper bracket and are rotatably mounted with pressure caps. The lower bottle-supporting device includes a fixed frame, a sliding frame, several support rollers, and a handwheel. The fixed frame is fixedly installed on the front side of the sliding frame and has several transverse sliding grooves. The support rollers are slidably installed in the corresponding sliding grooves through support roller supports. Every two support rollers form a group, allowing adjustment of the distance between adjacent support rollers. The sliding frame is slidably installed on the guide rod. The handwheel is rotatably installed behind the sliding frame, allowing adjustment and fixing of the position of the sliding frame relative to the guide rod.

2. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 1, characterized in that: The self-rotating mechanism includes a self-rotating power unit and several self-rotating supports at various workstations. The work platform has multiple mounting holes, each corresponding to a self-rotating support. Each self-rotating support includes a support base, bearings, a turntable, and a driven pulley. The support base is fixedly mounted on the work platform via a connecting flange and is hollow inside, with bearings coaxially fixed therein. The lower half of the turntable is inserted into the bearing, and its upper half is positioned above the support base. The driven pulley is coaxially fitted onto the upper middle part of the turntable. The self-rotating power unit includes multiple power motors. Each power motor is fixed to a support beam mounted on the upper middle part of the guide support via a motor bracket. A drive pulley is coaxially fixed to the output end of each power motor, and the drive pulley is connected to the driven pulley on the self-rotating support via a belt drive.

3. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 1, characterized in that: The main support frame includes four support columns, two long and two short, which are vertically fixed at the four corners of the base. The two short support columns are located on the front side of the base, and the two long support columns are located on the rear side of the base. The working platform is fixedly mounted on the top of the short support columns and the middle of the long support columns.

4. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 2, characterized in that: The lower side wall of the shot collection hopper is provided with a sandblasting pipe insertion hole corresponding to the rotating support. The sandblasting pipe can pass through the corresponding sandblasting pipe insertion hole. A rubber sealing plate is fixedly installed on the outside of the sandblasting pipe insertion hole, and a corresponding wear-resistant conical guide is installed on the inside of the sandblasting pipe insertion hole, which is coaxially arranged with the turntable in the rotating support. The bottom of the shot collection hopper is also provided with multiple maintenance windows, and each maintenance window is equipped with a maintenance cover plate on its outside.

5. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 1, characterized in that: The included angle between the guide bracket and the base is 84°, and the sandblasting pipe, the central axis of the rotating support, the guide rod, the center line of the roller shaft, the cylinder telescopic rod, and the guide bracket are all parallel to each other.

6. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 1, characterized in that: The sandblasting pipe is made of steel pipe and comes in various lengths, allowing for easy disassembly and replacement according to actual production needs.

7. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 2, characterized in that: The turntable comprises an upper half and a lower half, which are sequentially and fixedly connected as a single piece. The upper half is funnel-shaped and has a steel cylinder insertion hole inside. A sealing cone support is provided on the side wall of the funnel. The lower half is hollow cylindrical and has a sandblasting pipe channel inside. A protective sleeve is installed inside the sandblasting pipe channel, and its inner diameter is larger than the outer diameter of the sandblasting pipe.

8. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 1, characterized in that: The guide support is also equipped with a fall prevention device on the top crossbeam, including a support arm and a suspension chain. The top of the support arm is provided with a connecting lug, the upper end of the suspension chain is hung on the connecting lug, and the lower end of the suspension chain is connected to the upper support of the upper bottle holder.

9. The shot blasting machine for cleaning the inner wall of a steel cylinder according to claim 2, characterized in that: Each motor in the self-rotating power unit can pull at least one self-rotating support.

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