Polishing device for pressure container

Abstract

The invention relates to the technical field of container polishing, and particularly discloses a pressure container polishing device which comprises a machine body and a polishing mechanism, the axial direction of a pressure container is defined as the left-right direction, and the machine body is provided with a first driving assembly for driving the polishing mechanism to move in the left-right direction and a second driving assembly for driving the polishing mechanism to rotate around the central axis of the pressure container. The grinding mechanism comprises a mounting block and a grinding assembly. The grinding assembly comprises a mounting part rotationally connected to the mounting block, a supporting wheel arranged on the mounting part and a grinding belt arranged on the supporting wheel in a surrounding mode. A third driving assembly for driving the mounting part to rotate is arranged on the mounting block, the supporting wheel is slidably connected with the mounting part through a sliding rod, and a fourth driving assembly for driving the sliding rod to drive the supporting wheel to move is arranged in the mounting part. According to the polishing device for the pressure container, the inner wall of the pressure container can be comprehensively polished at a time, manpower and material resources are saved, meanwhile, the polishing efficiency is improved, and the probability that the polishing device collides with the pressure container is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of container polishing, and in particular to a polishing device for a pressure container. Background Art

[0002] Pressure vessels refer to closed devices that contain gas or liquid and can bear a certain pressure. During the manufacturing process of pressure vessels, various defects may occur on the inner wall of the pressure vessel, such as scratches, scale, rust, etc. These defects not only affect the aesthetics of the container, but more importantly, they may cause stress concentration during use and increase the risk of container rupture. Therefore, it is necessary to grind the inner wall of the pressure vessel with a grinding device to effectively remove these surface defects.

[0003] A Chinese patent with announcement number CN218363704U discloses a grinding device for processing the inner wall of a pressure vessel, comprising a workbench, a mounting frame is fixedly connected to the workbench, a vertical downward driving assembly is fixedly connected to the lower side of the mounting frame, a threaded sleeve is provided at the lower end of the driving assembly, an internal threaded rod is connected to the internal thread of the threaded sleeve, a fixing block is threadedly connected to the bottom end of the internal threaded sleeve and the upper end of the threaded sleeve, a symmetrical electric cylinder is fixed to the fixing block, a telescopic rod is provided on the electric cylinder, and a grinding head is fixedly connected to the outer end of the telescopic rod.

[0004] The above patent adjusts the total length of the internal threaded rod and the threaded sleeve rod through the cooperation of the threaded sleeve rod and the internal threaded rod, thereby driving the grinding head to move axially along the pressure vessel, and changing the extended length of the telescopic rod through the electric cylinder to drive the grinding head to move radially along the pressure vessel, so that the technical solution in the above patent can adapt to pressure vessels of different sizes.

[0005] However, in the actual process of manufacturing pressure vessels, the bottom wall inside the pressure vessel also needs to be polished, and the intersection of the side wall and the bottom of the pressure vessel is usually an arc-shaped structure. The technical solution in the above patent cannot polish the bottom wall and the arc-shaped structure of the pressure vessel. After the inner wall of the pressure vessel is polished, it is necessary to replace another polishing mechanism or perform manual polishing. Replacing the polishing mechanism or manual polishing is not only time-consuming and labor-intensive, resulting in low polishing efficiency, but also increases the probability of collision between the polishing mechanism and the pressure vessel, which is likely to affect the production quality of the pressure vessel.

[0006] Therefore, the art needs a grinding device for a pressure vessel to solve the above problems. Summary of the invention

[0007] The present invention provides a grinding device for a pressure vessel, aiming to solve the problem that the grinding device in the related art cannot grind the bottom wall of the pressure vessel and the arc-shaped part where the bottom wall and the side wall meet, and needs to be replaced with other grinding mechanisms or manual grinding, resulting in low grinding efficiency and the pressure vessel being easily bumped.

[0008] A grinding device for a pressure vessel of the present invention comprises a body and a grinding mechanism, wherein the axial direction of the pressure vessel is defined as the left-right direction, the body is provided with a driving component 1 for driving the grinding mechanism to move in the left-right direction and a driving component 2 for driving the grinding mechanism to rotate around the central axis of the pressure vessel, the grinding mechanism comprises a mounting block and a grinding component, the grinding component comprises a mounting portion rotatably connected to the mounting block, a plurality of supporting wheels arranged on the mounting portion, and a grinding belt arranged around the supporting wheels; The rotating shaft at the rotational connection between the mounting portion and the mounting block extends in the front-to-back direction, and the mounting block is provided with a driving component three for driving the mounting portion to rotate, a plurality of the supporting wheels are evenly spaced in the left-right direction, and are slidably connected to the mounting portion through a sliding rod, and a driving component four is provided in the mounting portion for driving the sliding rod to drive the supporting wheels to move; When the drive component three drives the mounting portion to drive the grinding component to rotate toward the bottom wall of the pressure vessel, the drive component four drives the slide rod to drive the support wheel to move, so that the support wheel pushes the grinding belt to fit the arc-shaped portion where the inner wall and the bottom wall of the pressure vessel meet.

[0009] The present invention drives the mounting portion to rotate so that the angle between the grinding assembly and the inner wall of the pressure vessel can be changed, thereby adapting to the bottom wall of the pressure vessel and the arc-shaped portion where the inner wall and the bottom wall meet. By driving the supporting wheel to move, the supporting wheel supports the grinding belt to rest as completely as possible against the inner wall of the pressure vessel, thereby achieving grinding of the arc-shaped portion and the bottom wall of the pressure vessel. After the grinding mechanism enters the pressure vessel, the present invention can grind the inner wall, the inner bottom wall and the arc-shaped portion where the inner wall and the inner bottom wall meet at one time, saving manpower and material resources while improving the grinding efficiency and reducing the probability of collision between the grinding device and the pressure vessel.

[0010] Preferably, the driving component four includes a filling liquid and a accommodating chamber provided in the mounting portion, the mounting portion is provided with a slide groove for accommodating the slide rod, the slide groove is communicated with the accommodating chamber, the filling liquid is filled in the slide groove and the accommodating chamber, and in the process that the driving component three drives the mounting portion to drive the grinding component to rotate toward the bottom wall of the pressure vessel, the supporting wheel squeezed by the inner wall of the pressure vessel and its corresponding slide rod move toward the accommodating chamber to squeeze the filling liquid and push the other supporting wheels against the inner wall of the pressure vessel.

[0011] By providing a accommodating chamber and a filling liquid, the activities of the supporting wheels can be linked. When the filling liquid in the accommodating chamber is squeezed, the filling liquid will flow into the slide groove corresponding to the supporting wheel that is not squeezed or is subjected to less squeezing pressure, thereby pushing the supporting wheel that is not squeezed or is subjected to less squeezing pressure to push the grinding belt against the inner wall of the pressure vessel, so as to make the grinding belt supported by the supporting wheels contact the inner wall of the pressure vessel as much as possible, thereby ensuring the grinding effect.

[0012] Preferably, the sliding rod is an elastic telescopic rod, the grinding belt cover is arranged on the side of the supporting wheel close to the inner wall of the pressure vessel, and the two ends of the grinding belt are respectively connected to the mounting part, and when the supporting wheel is not squeezed by external force, the elastic telescopic rod is in a contracted state.

[0013] When the supporting wheel moves due to different squeezing forces, the elastic telescopic rod can react quickly to tighten the grinding belt, thereby ensuring that the grinding belt will not slip off the supporting wheel due to relaxation.

[0014] Preferably, one end of the elastic telescopic rod located outside the slide groove is fixedly connected to a U-shaped seat, the support wheel is rotatably connected to the U-shaped seat, and a winding roller, an unwinding roller and a driving component are provided in the mounting portion. One end of the grinding belt is wound around the unwinding roller, and the other end is wound around the winding roller. When the driving component drives the winding roller to rewind, it synchronously drives the unwinding roller to unwind.

[0015] By setting the unwinding roller and the rewinding roller, the grinding belt can be replaced to ensure the grinding performance of the grinding belt.

[0016] Preferably, the mounting portion includes an automatic telescopic rod and a mounting plate, one end of the automatic telescopic rod is rotatably connected to the mounting block, and the other end is fixedly connected to the mounting plate, and the support wheel, the slide rod and the accommodating cavity are arranged on the mounting plate.

[0017] By setting the mounting portion as an automatically retractable rod with variable length, when the grinding mechanism enters the interior of the pressure vessel, the distance between the grinding belt and the inner wall of the pressure vessel can be controlled by the automatically retractable rod, so that the grinding mechanism can smoothly enter the interior of the pressure vessel.

[0018] Preferably, two groups of the grinding assemblies are provided, and the two groups of the grinding assemblies are symmetrical about the central axis of the pressure vessel, and a grinding plate is provided on the side of the mounting block facing the bottom wall of the pressure vessel, and the grinding plate cooperates with the two groups of the grinding assemblies to fully grind the bottom wall of the pressure vessel.

[0019] Preferably, the driving component three includes a motor three fixedly mounted on the mounting block, a gear one rotatably connected to the mounting block, and a gear two fixedly connected to the mounting portion, the output end of the motor three is transmission-connected to the gear one through a transmission belt, the gear two is meshed with the gear one, the motor three drives the gear one to rotate through the transmission belt, and the gear one drives the gear two and the mounting portion to rotate.

[0020] Preferably, the driving assembly 1 comprises a motor 1 fixedly mounted on the machine body, a lead screw fixedly connected to the output end of the motor 1, and a mounting seat slidably connected to the machine body along the left-right direction, the lead screw extends along the left-right direction and is rotatably connected to the machine body, the mounting seat is threadedly matched with the lead screw, the motor 1 drives the lead screw to rotate, and the lead screw drives the mounting seat to move along the left-right direction; The second driving component includes a second motor fixedly mounted on the mounting seat and a support rod fixedly connected to the output end of the second motor. The mounting block is arranged on the support rod. The second motor drives the support rod to drive the mounting block to rotate.

[0021] Preferably, the support rod is fixedly connected with a mounting plate, and an outer rod sleeved on the outer circumference of the support rod is rotatably connected to the mounting plate, an inner rod is slidably connected to the inner side of the outer rod along the left and right directions, and the inner rod is anti-rotationally engaged with the outer rod, the inner rod is threadedly engaged with the support rod, the mounting block is fixedly connected to the inner rod, a motor four is fixedly connected to the mounting plate, a driving gear is fixedly connected to the output end of the motor four, and a gear ring meshing with the driving gear is fixedly connected to the outer circumference of the outer rod.

[0022] By driving the outer sleeve rod and the inner sleeve rod to rotate through the four-motor drive, the mounting block is driven to move in the direction away from the bottom wall of the pressure vessel. Not only can the speed of the mounting block away from the bottom wall be adjusted according to the actual grinding situation, but also this driving structure is set separately for the mounting block, which can improve the stability of the overall equipment during operation.

[0023] Preferably, a dirt collecting box, a suction port and a dust pump are provided on the mounting block, the dust pump is fixedly mounted on the mounting block, and the air inlet of the dust pump is connected to the suction port, and the air outlet is connected to the dirt collecting box; The supporting wheel is made of a flexible material, and the interior of the supporting wheel is a hollow structure.

[0024] When the support wheel supports the grinding belt against the inner wall of the pressure container, the support wheel can undergo elastic deformation according to the pressure received, thereby ensuring the fitting state between the grinding belt and the pressure container.

[0025] The beneficial effects of the present invention are as follows: the present invention drives the mounting portion to rotate, so that the angle between the grinding assembly and the inner wall of the pressure vessel can be changed, thereby adapting to the bottom wall of the pressure vessel and the arc portion where the inner wall and the bottom wall meet; By driving the support wheel to move, the support wheel supports the grinding belt to rest against the inner wall of the pressure vessel as much as possible, thereby achieving the grinding of the arc-shaped portion and the bottom wall of the pressure vessel. After the grinding mechanism enters the pressure vessel, the present invention can grind the inner wall, the inner bottom wall and the arc-shaped portion at the intersection of the inner wall and the inner bottom wall of the pressure vessel at one time, saving manpower and material resources, improving the grinding efficiency, and reducing the probability of collision between the grinding device and the pressure vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The invention is a top view of a pressure vessel grinding device when grinding the pressure vessel.

[0027] Figure 2 It is a schematic diagram of a grinding device for a pressure vessel of the present invention from a first viewing angle.

[0028] Figure 3 It is a schematic diagram of a grinding device for a pressure vessel of the present invention from a second viewing angle.

[0029] Figure 4 The invention discloses a structural schematic diagram of a grinding mechanism of a grinding device for a pressure vessel.

[0030] Figure 5 The invention discloses a structural schematic diagram of a grinding assembly of a grinding device for a pressure vessel.

[0031] Figure 6 It is a cross-sectional view of a grinding component of a grinding device for a pressure vessel of the present invention.

[0032] Figure 7 The present invention is a cross-sectional view of a support wheel and a mounting plate of a grinding device for a pressure vessel.

[0033] Reference numerals: 1. Machine body; 11. Support seat; 12. Lead screw; 13. Mounting seat; 14. Motor 2; 15. Support rod; 16. Mounting plate; 17. Outer rod; 171. Gear ring; 18. Inner rod; 2. Mounting block; 20. Grinding plate; 21. Casing; 3. Mounting part; 31. Automatic telescopic rod; 32. Mounting plate; 33. Accommodating chamber; 34. Slide; 35. Winding roller; 36. Unwinding roller; 37. Gear 3; 38. Gear 4; 39. Gear 5; 4. Support wheel; 41. Slide rod; 42. U-shaped seat; 5. Grinding belt; 6. Dirt collection box; 61. Suction port; 7. Clamping plate; 71. Electric push cylinder; 8. Motor 4; 81. Driving gear; 9. Motor 3; 91. Gear 1; 92. Gear 2; 10. Pressure vessel. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] like Figures 1 to 7 As shown, a grinding device for a pressure vessel of the present invention includes a body 1 and a grinding mechanism. The axial direction of the pressure vessel 10 is defined as the left-right direction. The body 1 is provided with a clamping mechanism for clamping the pressure vessel 10, a driving component 1 for driving the grinding mechanism to move along the left-right direction, and a driving component 2 for driving the grinding mechanism to rotate around the central axis of the pressure vessel 10.

[0036] The grinding mechanism includes a mounting block 2 and a grinding assembly, and the grinding assembly includes a mounting portion 3 rotatably connected to the mounting block 2, a plurality of supporting wheels 4 arranged on the mounting portion 3, and a grinding belt 5 arranged around the supporting wheels 4. The rotating shaft at the rotational connection between the mounting portion 3 and the mounting block 2 extends in the front-to-back direction, and a driving assembly 3 for driving the mounting portion 3 to rotate is arranged on the mounting block 2. The plurality of supporting wheels 4 are evenly spaced in the left-right direction and are slidably connected to the mounting portion 3 through a sliding rod 41, and a driving assembly 4 for driving the sliding rod 41 to drive the supporting wheels 4 to move is arranged in the mounting portion 3.

[0037] During grinding, the pressure vessel 10 is clamped and fixed using a clamping mechanism, and then the drive component 1 is controlled to drive the grinding mechanism to move toward the inside of the pressure vessel 10, and the drive component 2 is controlled to drive the grinding mechanism to rotate around the central axis of the pressure vessel 10. At this time, the mounting portion 3 of the grinding mechanism is in a state perpendicular to the inner wall of the pressure vessel 10.

[0038] After the grinding mechanism enters the pressure vessel 10, the grinding belt 5 abuts against the inner wall of the pressure vessel 10. As the grinding mechanism moves forward and rotates, the grinding belt 5 grinds the inner wall of the pressure vessel 10. When the grinding mechanism moves to the arc-shaped portion where the inner wall and the inner bottom wall of the pressure vessel 10 meet, the drive component 3 drives the mounting part 3 to rotate toward the bottom wall of the pressure vessel 10. During the rotation, the drive component 4 drives the slide bar 41 to drive the support wheel 4 to move to adapt to the change in the distance between the support wheel 4 and the inner wall of the pressure vessel 10 during the rotation of the mounting part 3, so that the support wheel 4 supports the grinding belt 5 to abut against the inner wall of the pressure vessel 10 as much as possible, thereby achieving the grinding of the arc-shaped portion of the inner wall of the pressure vessel 10.

[0039] When the mounting portion 3 rotates until the grinding belt 5 contacts the bottom wall of the pressure vessel 10, the driving component drives the grinding mechanism to move a preset distance outside the pressure vessel 10, so that the mounting portion 3 can rotate to a state perpendicular to the bottom wall of the pressure vessel 10, so that during the rotation of the grinding mechanism, the grinding belt 5 can grind the bottom wall of the pressure vessel 10, thereby realizing the present invention of grinding the inner side wall, the inner bottom wall and the arc-shaped portion where the inner side wall and the inner bottom wall meet the pressure vessel 10 at one time, saving manpower and material resources while improving the grinding efficiency and reducing the probability of collision between the grinding device and the pressure vessel 10.

[0040] like Figure 4 As shown, in order to ensure the grinding effect and improve the grinding efficiency, in this embodiment, two groups of grinding assemblies are provided, and the two groups of grinding assemblies are symmetrical about the central axis of the pressure vessel 10. A grinding plate 20 is provided on the side of the mounting block 2 facing the bottom wall of the pressure vessel 10, and the grinding plate 20 cooperates with the two groups of grinding assemblies to fully grind the bottom wall of the pressure vessel 10.

[0041] like Figures 1 to 3 As shown, the clamping mechanism includes a clamping plate 7 symmetrically arranged on the machine body 1 along the front-to-back direction and an electric push cylinder 71 for driving the clamping plate 7 to move. The electric push cylinder 71 is fixedly installed on the machine body 1. The clamping plate 7 is slidably connected to the machine body 1 along the front-to-back direction and is fixedly connected to the corresponding electric push cylinder 71. The machine body 1 is provided with a support seat 11 between the two clamping plates 7. After the pressure vessel 10 is placed on the support seat 11, the electric push cylinder 71 drives the clamping plate 7 to move in a direction close to the pressure vessel 10 or drives the clamping plate 7 to move in a direction away from the pressure vessel 10, so as to clamp or release the pressure vessel 10.

[0042] The driving assembly 1 includes a motor 1 (not shown) fixedly mounted on the machine body 1, a lead screw 12 fixedly connected to the output end of the motor 1, and a mounting seat 13 slidably connected to the machine body 1 in the left-right direction. The lead screw 12 extends in the left-right direction and is rotatably connected to the machine body 1, and the mounting seat 13 is threadedly matched with the lead screw 12. The motor 1 drives the lead screw 12 to rotate, and the lead screw 12 drives the mounting seat 13 to move in the left-right direction.

[0043] The second driving assembly includes a second motor 14 fixedly mounted on the mounting seat 13 and a support rod 15 fixedly connected to the output end of the second motor 14. A mounting plate 16 is fixedly connected to the support rod 15, and an outer sleeve rod 17 sleeved on the outer periphery of the support rod 15 is rotatably connected to the mounting plate 16. An inner sleeve rod 18 is slidably connected in the outer sleeve rod 17 along the left and right directions. A convex strip (not shown in the figure) extends from the inner sleeve rod 18. A sliding groove (not shown in the figure) adapted to the convex strip is opened on the inner periphery of the outer sleeve rod 17. The inner sleeve rod 18 and the outer sleeve rod 17 are slidably connected and locked by the cooperation of the convex strip and the sliding groove.

[0044] like Figure 4 As shown, the inner sleeve rod 18 and the support rod 15 are threadedly matched, and the mounting block 2 is fixedly connected to the inner sleeve rod 18. The mounting plate 16 is fixedly connected to the motor 48, the output end of the motor 48 is fixedly connected to the driving gear 81, and the outer periphery of the outer sleeve rod 17 is fixedly connected to the gear ring 171 meshing with the driving gear 81.

[0045] When the motor 1 drives the lead screw 12 to drive the mounting seat 13 to move in the left and right directions, the driving assembly 2, the mounting block 2 and the grinding assembly on the mounting seat 13 move synchronously, so as to drive the grinding assembly to enter or exit the pressure vessel 10. In the process of entering the pressure vessel 10, the motor 2 14 drives the support rod 15 to rotate, and the support rod 15 drives the mounting block 2 and the grinding assembly to rotate around the central axis of the pressure vessel 10 through the mounting plate 16, the outer rod 17 and the inner rod 18, so as to drive the grinding assembly to grind the inner wall of the pressure vessel 10.

[0046] Continue reading Figure 4 The driving assembly 3 includes a motor 3 9 fixedly mounted on the mounting block 2, a gear 1 91 rotatably connected to the mounting block 2, and a gear 2 92 fixedly connected to the mounting portion 3. The output end of the motor 3 9 is connected to the gear 1 91 through a transmission belt, and the gear 2 92 is meshed with the gear 1 91. The motor 3 9 drives the gear 1 91 to rotate through the transmission belt, and the gear 1 91 drives the gear 2 92 and the mounting portion 3 to rotate.

[0047] The mounting portion 3 includes an automatic telescopic rod 31 and a mounting plate 32. One end of the automatic telescopic rod 31 is rotatably connected to the mounting block 2, and the other end is fixedly connected to the mounting plate 32. The support wheel 4 and the slide bar 41 are arranged on the mounting plate 32. As an example, the automatic telescopic rod 31 is an electric telescopic rod. The mounting block 2 is elastically connected to a sleeve 21 on one side facing the bottom wall of the pressure vessel 10. The sleeve 21 is slidably connected to the outer periphery of the inner sleeve rod 18 in the left-right direction and is anti-rotationally matched with the inner sleeve rod 18. The grinding plate 20 is fixedly connected to one end of the sleeve 21 facing the pressure vessel 10.

[0048] A distance sensor (not shown in the figure) is provided at the end of the inner sleeve rod 18. When the support rod 15 drives the mounting block 2 and the grinding assembly to enter the pressure vessel 10, and the distance sensor detects that the distance between the end of the inner sleeve rod 18 and the bottom wall of the pressure vessel 10 is less than the preset distance, the distance sensor transmits a signal to the motor 1, the motor 3 9 and the motor 4 8. The motor 1 controls the screw 12 to stop rotating, the motor 3 9 controls the mounting part 3 to rotate toward the bottom wall of the pressure vessel 10, and the motor 4 8 drives the driving gear 81 to rotate. The driving gear 81 drives the outer sleeve rod 17 and the inner sleeve rod through the ring gear 171. 18 rotates. Since the inner sleeve rod 18 is threadedly matched with the support rod 15, during the rotation of the inner sleeve rod 18, the mounting block 2 will be driven to move slowly in the direction away from the bottom wall of the pressure vessel 10, so that the automatic telescopic rod 31 can slowly rotate to a state perpendicular to the bottom wall of the pressure vessel 10, so that the grinding belt 5 can grind the arc-shaped portion and the bottom wall of the pressure vessel 10. At the same time, during the movement of the mounting block 2 in the direction away from the bottom wall of the pressure vessel 10, the grinding plate 20 will be driven away from the bottom wall of the pressure vessel 10 through the sleeve 21, so as to avoid interference between the grinding plate 20 and the two sets of grinding components.

[0049] like Figures 5 to 7 As shown, the drive assembly 4 includes a filling liquid (not shown in the figure) and a receiving chamber 33 opened in the mounting plate 32. The mounting plate 32 is provided with a slide groove 34 for receiving a slide rod 41. The slide groove 34 is connected with the receiving chamber 33, and the filling liquid is filled in the slide groove 34 and the receiving chamber 33. In the process of the drive assembly 3 driving the grinding assembly to rotate toward the bottom wall of the pressure vessel 10, the supporting wheel 4 squeezed by the inner wall of the pressure vessel 10, and its corresponding slide rod 41 will move toward the receiving chamber 33. The filling liquid in the receiving chamber 33 is squeezed and will move into the slide groove 34 corresponding to the supporting wheel 4 that is not squeezed or is squeezed with less pressure, thereby pushing the supporting wheel 4 that is not squeezed or is squeezed with less pressure to push the grinding belt 5 against the inner wall of the pressure vessel 10, so as to make the grinding belt 5 supported by the supporting wheel 4 contact with the inner wall of the pressure vessel 10 as much as possible, so as to ensure the grinding effect.

[0050] The slide bar 41 is an elastic telescopic rod, and one end of the elastic telescopic rod outside the slide slot 34 is fixedly connected to a U-shaped seat 42, and the support wheel 4 is rotatably connected to the U-shaped seat 42. The support wheel 4 is made of a flexible material, and the interior of the support wheel 4 is a hollow structure. As an example, the flexible material is rubber. When the support wheel 4 supports the grinding belt 5 against the inner wall of the pressure container 10, the support wheel 4 can be elastically deformed according to the pressure received, thereby ensuring the fitting state between the grinding belt 5 and the pressure container 10.

[0051] Continue reading Figure 7 A winding roller 35, an unwinding roller 36 and a driving member are arranged in the mounting portion 3. The grinding belt 5 is covered on one side of the support wheel 4 close to the inner wall of the pressure vessel 10. One end of the grinding belt 5 is wound on the unwinding roller 36, and the other end is wound on the winding roller 35. When the driving member drives the winding roller 35 to wind, the unwinding roller 36 is synchronously driven to unwind. When the support wheel 4 is not squeezed by an external force, the elastic telescopic rod is in a contracted state. When the support wheel 4 moves due to different squeezing forces, the elastic telescopic rod can react quickly to tighten the grinding belt 5, thereby ensuring that the grinding belt 5 will not slip off the support wheel 4 due to relaxation. In addition, by arranging the unwinding roller 36 and the winding roller 35, the grinding belt 5 can be replaced to ensure the grinding performance of the grinding belt 5.

[0052] The driving member includes a motor 5 (not shown in the figure) fixedly mounted on the mounting plate 32 and a gear 3 37 rotatably connected to the mounting plate 32. The output end of the motor 5 is connected to the gear 3 37 through a transmission belt. The winding roller 35 is fixedly connected to a coaxially arranged gear 4 38. The unwinding roller 36 is fixedly connected to a coaxially arranged gear 5 39. The gear 4 38 and the gear 5 39 are symmetrically arranged on both sides of the gear 3 37 and mesh with the gear 3 37. The motor 5 drives the gear 3 37 to rotate, and the gear 3 37 drives the gear 4 38 to rotate, so that the winding roller 35 rewinds the grinding belt 5. At the same time, the gear 3 37 drives the gear 5 39 to rotate synchronously, so that the unwinding roller 36 rewinds the grinding belt 5.

[0053] like Figure 2 and Figure 4 As shown, in order to prevent the grinding debris from affecting the grinding effect, in this embodiment, a dirt collection box 6, a suction port 61 and a dust pump (not shown in the figure) are provided on the mounting block 2. The dust pump is fixedly mounted on the mounting block 2, and the air inlet of the dust pump is connected to the suction port 61, and the air outlet is connected to the dirt collection box 6. During the grinding process of the grinding belt 5, the dust pump is running, and the grinding debris is sucked through the suction port 61, and the debris will be concentrated in the dirt collection box 6. After the grinding is completed, the debris in the dirt collection box 6 can be taken out and cleaned.

[0054] The specific working process of the grinding device for a pressure vessel of the present invention is as follows: in the initial state, the automatic telescopic rod 31 is in a state perpendicular to the support rod 15, the pressure vessel 10 is placed on the support seat 11 of the machine body 1, and the electric push cylinder 71 is controlled to drive the clamping plate 7 to move in a direction close to the pressure vessel 10, so as to clamp and fix the pressure vessel 10; The motor 1 is controlled to drive the lead screw 12 to drive the mounting seat 13 to move toward the direction close to the pressure vessel 10, and the mounting seat 13 drives the mounting block 2 and the grinding assembly to move toward the inside of the pressure vessel 10. When the grinding assembly enters the inside of the pressure vessel 10, the automatic telescopic rod 31 is controlled to extend so that the grinding belt 5 is attached to the inner wall of the pressure vessel 10; The control motor 2 14 drives the support rod 15 to rotate, and the support rod 15 drives the mounting block 2 and the grinding assembly to rotate around the central axis of the pressure vessel 10 through the mounting plate 16, the outer sleeve rod 17 and the inner sleeve rod 18, so that the grinding belt 5 grinds the inner wall of the pressure vessel 10; When the grinding plate 20 on the sleeve 21 contacts the bottom wall of the pressure vessel 10, the central part of the bottom wall of the pressure vessel 10 is ground. As the mounting seat 13 continues to move, the distance between the inner sleeve rod 18 and the bottom wall of the pressure vessel 10 gradually decreases. When the distance sensor detects that the distance between the end of the inner sleeve rod 18 and the bottom wall of the pressure vessel 10 is less than the preset distance, the distance sensor transmits a signal to the motor 1, the motor 3 9 and the motor 4 8; The motor 1 controls the lead screw 12 to stop rotating, and the mounting seat 13 stops moving forward. The motor 3 9 controls the mounting part 3 to rotate toward the bottom wall of the pressure vessel 10. The motor 4 8 drives the active gear 81 to rotate. The active gear 81 drives the outer sleeve rod 17 and the inner sleeve rod 18 to rotate through the gear ring 171. Since the inner sleeve rod 18 is threadedly matched with the support rod 15, during the rotation of the inner sleeve rod 18, the mounting block 2 and the grinding head are driven to move in a direction away from the bottom wall of the pressure vessel 10 until the automatic telescopic rod 31 rotates to a state perpendicular to the bottom wall of the pressure vessel 10, so that the grinding belt 5 can grind the arc-shaped portion and the bottom wall of the pressure vessel 10. In addition, during the movement of the mounting block 2, the grinding plate 20 will be driven away from the bottom wall of the pressure vessel 10 through the sleeve 21 to avoid interference between the grinding plate 20 and the two sets of grinding components, thereby achieving the effect of the grinding device fully grinding the inner side wall, the inner bottom wall and the arc-shaped portion where the inner side wall and the inner bottom wall meet at one time.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A grinding device for a pressure vessel, comprising a body and a grinding mechanism, wherein the axial direction of the pressure vessel is defined as the left-right direction, and the body is provided with a driving component 1 for driving the grinding mechanism to move in the left-right direction and a driving component 2 for driving the grinding mechanism to rotate around the central axis of the pressure vessel, characterized in that: The grinding mechanism comprises a mounting block and a grinding assembly, wherein the grinding assembly comprises a mounting portion rotatably connected to the mounting block, a plurality of supporting wheels arranged on the mounting portion, and a grinding belt arranged around the supporting wheels; The rotating shaft at the rotational connection between the mounting portion and the mounting block extends in the front-to-back direction, and the mounting block is provided with a driving component three for driving the mounting portion to rotate, a plurality of the supporting wheels are evenly spaced in the left-right direction, and are slidably connected to the mounting portion through a sliding rod, and a driving component four is provided in the mounting portion for driving the sliding rod to drive the supporting wheels to move; When the drive component three drives the mounting portion to drive the grinding component to rotate toward the bottom wall of the pressure vessel, the drive component four drives the slide rod to drive the support wheel to move, so that the support wheel pushes the grinding belt to fit the arc-shaped portion where the inner wall and the bottom wall of the pressure vessel meet.

2. The grinding device for a pressure vessel according to claim 1, characterized in that: The driving component four includes a filling liquid and a accommodating chamber opened in the mounting portion, the mounting portion is provided with a slide groove for accommodating the slide rod, the slide groove is communicated with the accommodating chamber, the filling liquid is filled in the slide groove and the accommodating chamber, and in the process of the driving component three driving the mounting portion to drive the grinding component to rotate toward the bottom wall of the pressure vessel, the supporting wheel squeezed by the inner wall of the pressure vessel and its corresponding slide rod move toward the accommodating chamber to squeeze the filling liquid to push the other supporting wheels against the inner wall of the pressure vessel.

3. The grinding device for a pressure vessel according to claim 2, characterized in that: The sliding rod is an elastic telescopic rod, the grinding belt cover is arranged on the side of the supporting wheel close to the inner wall of the pressure vessel, and the two ends of the grinding belt are respectively connected to the mounting part. When the supporting wheel is not squeezed by external force, the elastic telescopic rod is in a contracted state.

4. The grinding device for a pressure vessel according to claim 3, characterized in that: One end of the elastic telescopic rod located outside the slide groove is fixedly connected to a U-shaped seat, the supporting wheel is rotatably connected to the U-shaped seat, a winding roller, an unwinding roller and a driving component are arranged in the mounting portion, one end of the grinding belt is wound around the unwinding roller, and the other end is wound around the winding roller, and when the driving component drives the winding roller to rewind, the unwinding roller is synchronously driven to unwind.

5. The grinding device for a pressure vessel according to claim 3, characterized in that: The mounting portion comprises an automatic telescopic rod and a mounting plate, one end of the automatic telescopic rod is rotatably connected to the mounting block, and the other end is fixedly connected to the mounting plate, and the supporting wheel, the sliding rod and the accommodating cavity are arranged on the mounting plate.

6. The grinding device for a pressure vessel according to claim 1 or 5, characterized in that: There are two groups of grinding assemblies, and the two groups of grinding assemblies are symmetrical about the central axis of the pressure vessel. A grinding plate is provided on the side of the mounting block facing the bottom wall of the pressure vessel. The grinding plate cooperates with the two groups of grinding assemblies to fully grind the bottom wall of the pressure vessel.

7. The grinding device for a pressure vessel according to claim 6, characterized in that: The driving component three includes a motor three fixedly mounted on the mounting block, a gear one rotatably connected to the mounting block, and a gear two fixedly connected to the mounting portion. The output end of the motor three is transmission-connected to the gear one through a transmission belt, the gear two is meshed with the gear one, the motor three drives the gear one to rotate through the transmission belt, and the gear one drives the gear two and the mounting portion to rotate.

8. The grinding device for a pressure vessel according to claim 1, characterized in that: The driving assembly 1 includes a motor 1 fixedly mounted on the body, a lead screw fixedly connected to the output end of the motor 1, and a mounting seat slidably connected to the body in the left-right direction, the lead screw extends in the left-right direction and is rotatably connected to the body, the mounting seat is threadedly matched with the lead screw, the motor 1 drives the lead screw to rotate, and the lead screw drives the mounting seat to move in the left-right direction; The second driving component includes a second motor fixedly mounted on the mounting seat and a support rod fixedly connected to the output end of the second motor. The mounting block is arranged on the support rod. The second motor drives the support rod to drive the mounting block to rotate.

9. The grinding device for a pressure vessel according to claim 8, characterized in that: The support rod is fixedly connected with a mounting plate, and an outer rod sleeved on the outer periphery of the support rod is rotatably connected to the mounting plate, an inner rod is slidably connected to the inner side of the outer rod along the left and right directions, and the inner rod is anti-rotatingly matched with the outer rod, and the inner rod is threadedly matched with the support rod, the mounting block is fixedly connected to the inner rod, a motor four is fixedly connected to the mounting plate, a driving gear is fixedly connected to the output end of the motor four, and a gear ring meshing with the driving gear is fixedly connected to the outer periphery of the outer rod.

10. The grinding device for a pressure vessel according to claim 1, characterized in that: The mounting block is provided with a dirt collecting box, a suction port and a dust suction pump, the dust suction pump is fixedly mounted on the mounting block, and the air inlet of the dust suction pump is connected to the suction port, and the air outlet is connected to the dirt collecting box; The supporting wheel is made of a flexible material, and the interior of the supporting wheel is a hollow structure.

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