Simple sand pouring device for cleaning inside of steel gas cylinder

Abstract

The application provides a simple sand pouring device for cleaning the inside of a steel gas cylinder, and relates to the technical field of steel gas cylinder cleaning. The device comprises a steel support, the top end of the steel support is provided with a turnover frame, the top end of the turnover frame is provided with a conveying mechanism for conveying the steel gas cylinder on one side, the top end of the turnover frame is fixedly connected with a support frame on the other side, the support frame is provided with a positioning assembly for positioning the steel gas cylinder, and a fixing assembly for fixing the body of the steel gas cylinder is arranged between the conveying mechanism and the positioning assembly. The steel gas cylinder is fixed on the turnover frame through the fixing assembly, the stability of the connection between the bottle mouth and the top bowl is ensured, the turnover and pouring of the gas cylinder are realized through the turnover of the turnover frame, the gas cylinder can be kept stable in the state of vertical downward, the situation that the gas cylinder is inclined or collapses after being turned over is avoided, and the residual steel sand in the gas cylinder is stripped by the stripping effect of gravity and uniform vibration provided by the vibration motor.

Description

Technical Field

[0001] This invention relates to the field of steel gas cylinder cleaning technology, and in particular to a simple sand-pouring device for cleaning the inside of steel gas cylinders. Background Technology

[0002] Steel gas cylinders are steel pressure vessels used for storing and transporting compressed gases, liquefied gases, or dissolved gases. They typically have a cylindrical or spherical structure and are usually made of high-strength steel, possessing excellent pressure resistance and capable of withstanding the storage and transportation of high-pressure gases. After the production, processing, or sandblasting processes of steel gas cylinders, a certain amount of steel sand impurities usually remain inside. If not thoroughly cleaned, this will directly affect the safety of subsequent filling and use of the gas cylinder.

[0003] However, existing methods for cleaning steel sand from steel gas cylinders mostly rely on manual pouring and tapping. Since steel gas cylinders are made of high-strength steel, they are quite heavy. Relying solely on manual handling or turning can easily lead to the cylinder tipping over or being bumped. Furthermore, pouring sand from the cylinder upside down cannot ensure its stability when tilted. At the same time, manual tapping makes it difficult to control the amplitude and frequency of vibration, resulting in steel sand residue remaining in the corners of the cylinder's inner wall that cannot be cleaned. Summary of the Invention

[0004] The problem that this invention aims to solve is that relying on manual handling can easily lead to gas cylinders tipping over or being bumped, and it is impossible to ensure the stability of the gas cylinder when it is tipped over. At the same time, it is difficult to control the amplitude and frequency of vibration when manually knocking, resulting in the inability to clean the steel sand remaining in the dead corners of the inner wall of the gas cylinder.

[0005] To solve the above-mentioned technical problems, the present invention provides a simple sand-pouring device for cleaning the inside of steel gas cylinders, including a steel support frame, a flipping frame at the top of the steel support frame, a conveying mechanism for conveying steel gas cylinders on one side of the top of the flipping frame, a support frame fixedly connected to the other side of the top of the flipping frame, a positioning component for positioning steel gas cylinders on the support frame, and a fixing component for fixing the body of steel gas cylinders between the conveying mechanism and the positioning component. The positioning component includes a connecting plate, one end of which is fixedly connected to a top bowl, and the inner wall of the top bowl is fixedly connected to a buffer layer, wherein the inner wall of the top bowl is arc-shaped. The fixing component includes a fixing frame fixedly connected to the top of the flipping frame. A support base is fixedly connected to the middle of the bottom end of the inner cavity of the fixing frame. A top block is movably connected to the top of the inner cavity of the fixing frame. The top end of the support base and the bottom end of the top block are set in an arc shape.

[0006] Preferably, the end of the connecting plate away from the top bowl is fixedly connected to a sand collecting funnel and four spring iron cores, one end of the top bowl passes through the connecting plate and is connected to the sand collecting funnel, and the end of the sand collecting funnel away from the connecting plate passes through the support frame and is fixedly connected to a sand discharge pipe.

[0007] Preferably, the support frame has two adjustment slots, and the inner cavity of each adjustment slot is movably connected to two spring cores. The four spring cores are arranged in a rectangular array, and the ends of the four spring cores away from the connecting plate pass through the adjustment slots and are jointly fixedly connected to the spring base plate.

[0008] Preferably, the surface of the spring core is fitted with two first sleeves and a second sleeve, one end of the connecting plate is fixedly connected with four third sleeves, one end of the spring base plate is fixedly connected with four fourth sleeves, a first compression spring is provided between the first sleeves and the third sleeves, and a second compression spring is provided between the second sleeves and the fourth sleeves.

[0009] Preferably, a fixing cylinder is fixedly installed on both sides of the bottom end of the inner cavity of the fixing frame, and the extended ends of the two fixing cylinders are fixedly connected to the bottom sides of the top block.

[0010] Preferably, the conveying mechanism includes several bearing seats fixedly connected to the top of the tilting frame, and a conveying roller is provided between every two adjacent bearing seats. The surface of the conveying roller is covered with a polyurethane coating layer, and each conveying roller is provided with a driving device.

[0011] Preferably, a tilting cylinder is provided in the middle of the steel bracket, a support plate is fixedly connected to the middle of the tilting frame, a steering knuckle is fixedly connected to the extended end of the tilting cylinder, a fixed bearing is fixedly connected to the bottom end of the support plate, and the steering knuckle is rotatably connected to the surface of the fixed bearing.

[0012] Preferably, one end of the steel bracket is fixedly connected to a flipping shaft, and flipping bearing sleeves are fixedly installed on both sides of the bottom end of the flipping frame. The two flipping bearing sleeves are rotatably connected to the two sides of the surface of the flipping shaft, respectively.

[0013] A vibration motor is installed at the end of the spring base plate away from the support frame, and a collection tray is provided on one side of the steel bracket, with the collection tray corresponding to the position of the sand discharge pipe output end.

[0014] The technical effects and advantages of this invention are as follows: This invention uses a fixing component to clamp and secure the steel gas cylinder. The steel gas cylinder is transported to the top bowl position via a conveying mechanism, eliminating the need for manual handling and effectively improving transportation efficiency. It also significantly increases the accuracy of the connection between the steel gas cylinder and the top bowl. After the cylinder mouth aligns with the through hole in the center of the top bowl, the extension and retraction of the fixed cylinder's extension end causes the top block to move up and down within the fixed frame. When the top block moves downwards, it clamps against the supporting base below, securing the steel gas cylinder and ensuring the stability of the connection between the cylinder mouth and the top bowl. This also prevents the steel gas cylinder from tilting or collapsing under vibration after being flipped over.

[0015] This invention enables the flipping of steel gas cylinders by using a flipping frame, eliminating the need for manual flipping. When flipping is required, a flipping cylinder is activated, and the extension of the cylinder's protruding end pushes the support plate, causing the flipping frame to flip upwards. The flipping frame stops after flipping 90 degrees, ensuring that the steel gas cylinder fixed on the flipping frame remains vertical with its mouth facing downwards. This ensures that residual steel sand impurities inside the cylinder can be discharged, avoiding the need for manual handling during the gas cylinder flipping process, which can lead to the gas cylinder tipping over, being bumped, and being unable to stably position gas cylinders of different specifications.

[0016] This invention utilizes a vibrating motor to provide excitation force. After the tilting frame is tilted, the vibrating motor generates vibration, and the first and second compression springs elastically expand and contract with the excitation force of the vibrating motor, driving the tilting frame and the steel gas cylinder to achieve high-frequency, small-amplitude vibration. The residual steel sand inside the gas cylinder is peeled off by gravity and uniform vibration, falling from the cylinder mouth into the inner cavity of the sand collection funnel connected to the top bowl. Finally, it is discharged into the inner cavity of the collection tray for centralized collection and treatment through the sand discharge pipe connected to the bottom of the sand collection funnel. This avoids the problem of steel sand remaining in the dead corners of the gas cylinder wall being difficult to clean due to the inability to control the vibration amplitude and frequency by manually striking. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the overall flipped state structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the positioning component structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the fixed component structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the overall cross-sectional structure of the present invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0023] Figure 7 This is a schematic cross-sectional view of the fixing component of the present invention.

[0024] The attached figures are labeled as follows: 1. Steel bracket; 2. Tilting frame; 3. Conveying mechanism; 31. Bearing seat; 32. Conveying roller; 33. Polyurethane coating layer; 4. Support frame; 5. Positioning assembly; 51. Connecting plate; 52. Top bowl; 53. Buffer layer; 54. Sand collection funnel; 55. Spring core; 56. Sand discharge pipe; 57. Spring base plate; 58. First sleeve; 59. Second sleeve; 510. Third sleeve; 511. Fourth sleeve; 512. First compression spring; 513. Second compression spring; 514. Vibration motor; 6. Fixing assembly; 61. Fixing frame; 62. Support base; 63. Top block; 64. Fixing cylinder; 7. Adjusting groove; 8. Tilting cylinder; 9. Support plate; 10. Steering knuckle; 11. Fixing bearing; 12. Tilting shaft; 13. Tilting bearing sleeve; 14. Collection tray. Detailed Implementation

[0025] This invention provides a simple sand-pouring device for cleaning the inside of steel gas cylinders, such as... Figure 1 - Figure 7 As shown, it includes a steel support 1, a tilting frame 2 is provided at the top of the steel support 1, a conveying mechanism 3 for conveying steel gas cylinders is provided on one side of the top of the tilting frame 2, a support frame 4 is fixedly connected to the other side of the top of the tilting frame 2, a positioning component 5 for positioning steel gas cylinders is provided on the support frame 4, and a fixing component 6 for fixing the body of steel gas cylinders is provided between the conveying mechanism 3 and the positioning component 5.

[0026] Furthermore, such as Figure 1 and Figure 3 As shown, the positioning component 5 includes a connecting plate 51, one end of which is fixedly connected to a top bowl 52. A buffer layer 53 is fixedly connected to the inner wall of the top bowl 52. The inner wall of the top bowl 52 is arc-shaped. The arc-shaped design of the inner wall of the top bowl 52 enables it to adapt to the nozzle structure of the steel gas cylinder, while the added buffer layer 53 plays a buffering role.

[0027] Furthermore, such as Figure 1 and Figure 4 As shown, the fixing component 6 includes a fixing frame 61 fixedly connected to the top of the flipping frame 2. A support base 62 is fixedly connected to the middle of the bottom end of the inner cavity of the fixing frame 61. A top block 63 is movably connected to the top of the inner cavity of the fixing frame 61. The top end of the support base 62 and the bottom end of the top block 63 are set in an arc shape. The fixing component 6 clamps and fixes the steel gas cylinder body that needs to be flipped. The arc design allows the support base 62 and the top block 63 to fit more closely to the surface of the steel gas cylinder, preventing the steel gas cylinder from being unable to maintain a vertical state after flipping, and thus avoiding tilting or collapsing.

[0028] Furthermore, such as Figure 3 and Figure 6 As shown, a sand-collecting funnel 54 and four spring iron cores 55 are fixedly connected to the end of the connecting plate 51 away from the top bowl 52. One end of the top bowl 52 passes through the connecting plate 51 and is connected to the sand-collecting funnel 54. The end of the sand-collecting funnel 54 away from the connecting plate 51 passes through the support frame 4 and is fixedly connected to the sand discharge pipe 56. After the steel gas cylinder is flipped by the flipping frame 2, the steel sand impurities remaining inside it are discharged from the bottle mouth under the action of gravity, enter the inner cavity of the sand-collecting funnel 54, and are collected and discharged through the sand discharge pipe 56.

[0029] Furthermore, such as Figure 3 and Figure 7 As shown, the support frame 4 has two adjustment slots 7. Each adjustment slot 7 has two spring cores 55 movably connected to its inner cavity. The four spring cores 55 are arranged in a rectangular array. The ends of the four spring cores 55 away from the connecting plate 51 pass through the adjustment slots 7 and are fixedly connected to the spring base plate 57. By adjusting the position of the spring cores 55 in the inner cavity of the adjustment slots 7, the position of the positioning component 5 can be adjusted so that the position of the top bowl 52 corresponds to the position of the mouth of the steel gas cylinder. Furthermore, the device can adjust the position of the top bowl 52 according to the specific specifications and dimensions of different steel gas cylinders to ensure that the mouth of the cylinder can be aligned with the discharge port of the sand collecting funnel 54 to complete the sand pouring operation.

[0030] Furthermore, such as Figure 3 and Figure 7 As shown, two first sleeves 58 and second sleeves 59 are sleeved on the surface of the spring core 55. Four third sleeves 510 are fixedly connected to one end of the connecting plate 51, and four fourth sleeves 511 are fixedly connected to one end of the spring base plate 57. A first compression spring 512 is provided between the first sleeve 58 and the third sleeve 510, and a second compression spring 513 is provided between the second sleeve 59 and the fourth sleeve 511. After the position of the spring core 55 is adjusted, the first sleeves 58 and the second sleeves 59 are rotated to fix the spring core 55 in the inner cavity of the adjusting groove 7. At the same time, the first compression spring 512 and the second compression spring 513 form an elastic support structure to ensure the stability of the position of the spring core 55 and the uniformity of vibration transmission.

[0031] Furthermore, such as Figure 4 and Figure 5As shown, two fixed cylinders 64 are fixedly installed on both sides of the bottom of the inner cavity of the fixed frame 61. The extended ends of the two fixed cylinders 64 are fixedly connected to the bottom sides of the top block 63. The steel gas cylinder is transported to the top bowl 52 position through the conveying mechanism 3. After the bottle mouth is aligned with the through hole in the middle of the top bowl 52, the fixed cylinders 64 are activated. The extension and retraction of the extended ends of the fixed cylinders 64 drive the top block 63 to move up and down on the inner wall of the fixed frame 61. When the top block 63 moves downward, it cooperates with the support base 62 below to form a clamping structure, which fixes the body of the steel gas cylinder, ensuring the stability of the connection between the bottle mouth and the top bowl 52. At the same time, it prevents the steel gas cylinder from tilting or collapsing due to its own weight or vibration after it is overturned.

[0032] Furthermore, such as Figure 1 and Figure 5 As shown, the conveying mechanism 3 includes several bearing seats 31 fixedly connected to the top of the tilting frame 2. A conveying roller 32 is provided between every two adjacent bearing seats 31. The surface of the conveying roller 32 is covered with a polyurethane coating layer 33. Each conveying roller 32 is equipped with a drive device. The polyurethane coating layer 33 increases the friction and anti-slip effect of the conveying roller 32. The drive device is a geared motor. The output shaft of the geared motor is connected to the sprocket of the rotating shaft of each conveying roller 32 through a single row of roller chains, so as to realize the synchronous rotation of several conveying rollers 32. After the steel gas cylinder that needs to be cleaned by sand removal is placed on the conveying roller 32, the drive device is started to realize the synchronous rotation of several conveying rollers 32. With the synchronous rotation of several conveying rollers 32, the conveying operation of the steel gas cylinder is realized. The polyurethane coating layer 33 prevents the steel gas cylinder from slipping on the conveying roller 32, ensuring that the steel gas cylinder can move smoothly on the conveying roller 32.

[0033] Furthermore, such as Figure 2 and Figure 5 As shown, a tilting cylinder 8 is provided in the middle of the steel support 1, a support plate 9 is fixedly connected to the middle of the tilting frame 2, a steering knuckle 10 is fixedly connected to the extended end of the tilting cylinder 8, and a fixed bearing 11 is fixedly connected to the bottom end of the support plate 9. The steering knuckle 10 and the fixed bearing 11 are rotatably connected. The steel gas cylinder is conveyed to the top bowl 52 by the conveying roller 32. After the cylinder body is fixed by the clamping of the support base 62 and the top block 63, the tilting cylinder 8 is activated to control the extension of the extended end of the tilting cylinder 8. The fixed bearing 11 is pushed by the steering knuckle 10. As the extended end of the tilting cylinder 8 continues to extend, the steering knuckle 10 and the fixed bearing 11 rotate relative to each other.

[0034] Furthermore, such as Figure 2As shown, a rotating shaft 12 is fixedly connected to one end of the steel bracket 1, and rotating bearing sleeves 13 are fixedly installed on both sides of the bottom end of the rotating frame 2. The two rotating bearing sleeves 13 are rotatably connected to the two sides of the surface of the rotating shaft 12 respectively. As the extended end of the rotating cylinder 8 continues to extend, the support plate 9 is pushed to move through the fixed bearing 11, and the rotating frame 2 is driven to rotate upward through the support plate 9. When the rotating frame 2 rotates, the rotating shaft 12 rotates between the two rotating bearing sleeves 13. When the rotating frame 2 rotates 90 degrees, it stops, so that the mouth of the steel gas cylinder fixed on the rotating frame 2 remains vertical with the cylinder mouth facing downward, ensuring that the steel sand impurities remaining in the cylinder can be discharged.

[0035] Furthermore, such as Figure 2 and Figure 3 As shown, a vibration motor 514 is installed at the end of the spring base plate 57 away from the support frame 4. A collection tray 14 is provided on one side of the steel bracket 1. The position of the collection tray 14 corresponds to the output end of the sand discharge pipe 56. After the flipping frame 2 flips, the vibration motor 514 is started. The vibration motor 514 generates vibration, and the first compression spring 512 and the second compression spring 513 elastically expand and contract with the excitation force of the vibration motor 514, which drives the flipping frame 2 and the steel gas cylinder to achieve high-frequency small-amplitude vibration. The residual steel sand inside the gas cylinder is peeled off by gravity and uniform vibration, and falls from the mouth of the cylinder into the inner cavity of the sand collection funnel 54 connected to the top bowl 52. In addition, the steel sand remaining in the dead corner of the inner wall of the gas cylinder is detached under uniform and high-frequency vibration. Finally, it is discharged into the inner cavity of the collection tray 14 for centralized collection and treatment through the sand discharge pipe 56 connected to the bottom of the sand collection funnel 54.

[0036] The working principle of this invention is as follows: First, based on the specific dimensions of the steel gas cylinder to be cleaned, the position of the positioning component 5 is adjusted. This is achieved by adjusting the position of the spring core 55 within the adjusting groove 7, ensuring that the position of the top bowl 52 corresponds to the mouth of the steel gas cylinder. This allows the device to be used with steel gas cylinders of different dimensions. After adjustment, the steel gas cylinder to be cleaned is placed on the conveying mechanism 3. Then, the drive device using a geared motor is started. The output shaft of the geared motor is connected to the sprockets of each conveying roller 32 via a single-row roller chain, achieving synchronous rotation of the several conveying rollers 32. The synchronous rotation enables the conveying operation of the steel gas cylinder, and the polyurethane coating layer 33 prevents the steel gas cylinder from slipping on the conveying roller 32, ensuring that the steel gas cylinder can move smoothly on the conveying roller 32. The steel gas cylinder continuously moves towards the top bowl 52 until the mouth of the steel gas cylinder is aligned with the through hole in the middle of the top bowl 52, at which point the conveying stops. After the steel gas cylinder moves to the designated position, the fixing cylinder 64 is activated. The extended end of the fixing cylinder 64 controls the top block 63 to move downward, cooperating with the support base 62 below to form a clamping structure, fixing the body of the steel gas cylinder, ensuring the stability of the connection between the nozzle and the top bowl 52. After fixing is completed, the following steps are taken: The rotating cylinder 8 extends continuously, causing the fixed bearing 11 to push the support plate 9 to move. The support plate 9 then drives the rotating frame 2 to rotate upwards. During rotation, the rotating shaft 12 rotates between the two rotating bearing sleeves 13. The rotating frame 2 stops after rotating 90 degrees, ensuring the steel gas cylinder fixed to it remains vertical with its mouth facing downwards. Simultaneously, the fixing component 6 effectively prevents the steel gas cylinder from tilting or collapsing due to its own weight or vibration after rotation. Even after tilting, the steel gas cylinder remains vertical. The vibration motor 514 is then activated, generating vibration. Furthermore, the first compression spring 512 and the second compression spring 513 elastically extend and retract with the excitation force of the vibration motor 514, driving the tilting frame 2 and the steel gas cylinder to achieve high-frequency, small-amplitude vibration. The residual steel sand inside the gas cylinder is peeled off by gravity and uniform vibration, falling from the bottle mouth into the inner cavity of the sand collection funnel 54 connected to the top bowl 52. In addition, the steel sand remaining in the dead corner of the inner wall of the gas cylinder is detached under uniform, high-frequency vibration. Finally, it is discharged into the inner cavity of the collection tray 14 for centralized collection and treatment through the sand discharge pipe 56 connected to the bottom end of the sand collection funnel 54. After cleaning, the tilting cylinder 8 is restarted again, controlling the extended end of the tilting cylinder 8 to shorten, driving the tilting frame 2 to reset and return to the horizontal state.

[0037] It is understood that the present invention has been described through some embodiments, which are known to those skilled in the art. Various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A simple sand-pouring device for cleaning the inside of steel gas cylinders, comprising a steel support (1), characterized in that: The top of the steel support (1) is provided with a flipping frame (2), and a conveying mechanism (3) for conveying steel gas cylinders is provided on one side of the top of the flipping frame (2). A support frame (4) is fixedly connected to the other side of the top of the flipping frame (2). A positioning component (5) for positioning steel gas cylinders is provided on the support frame (4). A fixing component (6) for fixing the body of steel gas cylinders is provided between the conveying mechanism (3) and the positioning component (5). The positioning component (5) includes a connecting plate (51), one end of which is fixedly connected to a top bowl (52), and the inner wall of the top bowl (52) is fixedly connected to a buffer layer (53), and the inner wall of the top bowl (52) is set to be arc-shaped; The fixing component (6) includes a fixing frame (61) fixedly connected to the top of the flipping frame (2). A support base (62) is fixedly connected to the middle of the bottom end of the inner cavity of the fixing frame (61). A top block (63) is movably connected to the top of the inner cavity of the fixing frame (61). The top end of the support base (62) and the bottom end of the top block (63) are set to be arc-shaped. The end of the connecting plate (51) away from the top bowl (52) is fixedly connected to a sand collecting funnel (54) and four spring iron cores (55). One end of the top bowl (52) passes through the connecting plate (51) and is connected to the sand collecting funnel (54). The end of the sand collecting funnel (54) away from the connecting plate (51) passes through the support frame (4) and is fixedly connected to a sand discharge pipe (56). The support frame (4) has two adjustment slots (7), and the inner cavity of each adjustment slot (7) is movably connected to two spring iron cores (55). The four spring iron cores (55) are arranged in a rectangular array. The end of the four spring iron cores (55) away from the connecting plate (51) passes through the adjustment slot (7) and is fixedly connected to the spring base plate (57). A vibration motor (514) is installed at the end of the spring base plate (57) away from the support frame (4), and a collection tray (14) is provided on one side of the steel bracket (1). The position of the collection tray (14) corresponds to the output end of the sand discharge pipe (56). The surface of the spring core (55) is fitted with two first sleeves (58) and a second sleeve (59). One end of the connecting plate (51) is fixedly connected with four third sleeves (510). One end of the spring base plate (57) is fixedly connected with four fourth sleeves (511). A first compression spring (512) is provided between the first sleeve (58) and the third sleeve (510). A second compression spring (513) is provided between the second sleeve (59) and the fourth sleeve (511). When the flipping frame (2) is flipped 90 degrees and then stopped, the mouth of the steel gas cylinder fixed on the flipping frame (2) is kept vertical with the mouth facing down. At the same time, the vibration motor (514) generates vibration, and the first compression spring (512) and the second compression spring (513) elastically stretch and contract with the excitation force of the vibration motor (514), driving the flipping frame (2) and the steel gas cylinder to achieve high-frequency small-amplitude vibration. The residual steel sand inside the gas cylinder is peeled off by gravity and uniform vibration, falling from the mouth of the cylinder into the inner cavity of the sand collection funnel (54) connected to the top bowl (52).

2. The simple sand-pouring device for cleaning the inside of steel gas cylinders according to claim 1, characterized in that: Fixed cylinders (64) are fixedly installed on both sides of the bottom of the inner cavity of the fixed frame (61), and the extended ends of the two fixed cylinders (64) are fixedly connected to the bottom sides of the top block (63).

3. A simple sand-pouring device for cleaning the inside of steel gas cylinders according to claim 1, characterized in that: The conveying mechanism (3) includes several bearing seats (31) fixedly connected to the top of the tilting frame (2). A conveying roller (32) is provided between every two adjacent bearing seats (31). The surface of the conveying roller (32) is covered with a polyurethane coating layer (33). Each conveying roller (32) is provided with a driving device.

4. A simple sand-pouring device for cleaning the inside of steel gas cylinders according to claim 1, characterized in that: A tilting cylinder (8) is provided in the middle of the steel bracket (1), a support plate (9) is fixedly connected in the middle of the tilting frame (2), a steering knuckle (10) is fixedly connected to the extended end of the tilting cylinder (8), a fixed bearing (11) is fixedly connected to the bottom end of the support plate (9), and the steering knuckle (10) is rotatably connected to the surface of the fixed bearing (11).

5. A simple sand-pouring device for cleaning the inside of steel gas cylinders according to claim 1, characterized in that: One end of the steel bracket (1) is fixedly connected to a flipping shaft (12), and flipping bearing sleeves (13) are fixedly installed on both sides of the bottom end of the flipping frame (2). The two flipping bearing sleeves (13) are rotatably connected to the two sides of the surface of the flipping shaft (12).

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