A grinding device for a pressure vessel

Abstract

The present invention relates to the technical field of container grinding, and specifically discloses a grinding device for a pressure vessel, which includes a machine body and a grinding mechanism. Defining the axial direction of the pressure vessel as the left-right direction, the machine body is provided with a first driving component for driving the grinding mechanism to move in the left-right direction and a second driving component for driving the grinding mechanism to rotate around the central axis of the pressure vessel. The grinding mechanism includes a mounting block and a grinding component. The grinding component includes a mounting part rotatably connected to the mounting block, a support wheel provided on the mounting part, and a grinding belt surrounding the support wheel. The mounting block is provided with a third driving component for driving the mounting part to rotate. The support wheel is slidably connected to the mounting part through a sliding rod, and the mounting part is provided with a fourth driving component for driving the sliding rod to drive the support wheel to move. The grinding device for the pressure vessel of the present invention can comprehensively grind the inner wall of the pressure vessel at one time, saving manpower and material resources while improving the grinding efficiency and reducing the probability of the grinding device colliding with the pressure vessel.

Description

Technical Field

[0001] The present invention relates to the technical field of container grinding, and particularly relates to a grinding device for a pressure vessel. Background Art

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

[0003] Chinese Patent with Publication No. CN218363704U discloses a grinding device for processing the inner wall of a pressure vessel, including a workbench, an installation frame fixedly connected to the workbench, a vertically downward driving assembly fixedly connected to the lower side of the installation frame, a threaded sleeve rod arranged at the lower end of the driving assembly, an inner threaded rod threadedly connected to the threaded sleeve rod, fixing blocks threadedly connected to both the bottom end and the upper end of the inner threaded sleeve rod, symmetrically arranged electric cylinders fixed on the fixing blocks, telescopic rods arranged on the electric cylinders, and a grinding head fixedly connected to the outer end of the telescopic rod.

[0004] Through the cooperation of the threaded sleeve rod and the inner threaded rod, the total length of the inner threaded rod and the threaded sleeve rod is adjusted to drive the grinding head to move axially along the pressure vessel. By changing the length of the telescopic rod extended by the electric cylinder, the grinding head is driven 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, during the actual manufacturing process of a pressure vessel, the bottom wall inside the pressure vessel also needs to be ground, and the intersection of the side wall and the bottom of the pressure vessel is usually an arc structure. The technical solution in the above patent cannot grind the bottom wall and the arc structure of the pressure vessel. After the inner side wall of the pressure vessel is ground, it is necessary to replace other grinding mechanisms or perform manual grinding. When replacing the grinding mechanism or performing manual grinding, it is not only time-consuming and laborious, resulting in low grinding efficiency, but also increases the probability of collision between the grinding mechanism and the pressure vessel, which is likely to affect the production quality of the pressure vessel.

[0006] Therefore, there is a need in the art for 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;

[0009] 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;

[0010] 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.

[0011] 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.

[0012] Preferably, the fourth driving component includes a filling liquid and a receiving cavity formed in the mounting portion. The mounting portion is provided with a chute for receiving the sliding rod, and the chute communicates with the receiving cavity. The filling liquid fills the chute and the receiving cavity. During the process that the third driving component drives the mounting portion to drive the grinding component to rotate towards the bottom wall of the pressure vessel, the support wheel pressed by the inner wall of the pressure vessel, and the corresponding sliding rod moves towards the receiving cavity to squeeze the filling liquid to push the other support wheels to abut against the inner wall of the pressure vessel.

[0013] By providing the receiving cavity and the filling liquid, the activities between the support wheels can be associated. When the filling liquid in the receiving cavity is squeezed, the filling liquid will move into the chute corresponding to the support wheel that is not squeezed or is less squeezed, so as to push the support wheel that is not squeezed or is less squeezed to push the grinding belt to abut against the inner wall of the pressure vessel, and make the grinding belt supported by the support wheels all contact the inner wall of the pressure vessel as much as possible to ensure the grinding effect.

[0014] Preferably, the sliding rod is an elastic telescopic rod. The grinding belt covers the side of the support wheel close to the inner wall of the pressure vessel, and both ends of the grinding belt are respectively connected to the mounting portion. When the support wheel is not extruded by external force, the elastic telescopic rod is in a contracted state.

[0015] When the support wheels move due to different extrusion forces, the elastic telescopic rod can quickly respond to tension the grinding belt, so as to ensure that the grinding belt will not slip off the support wheel due to slack.

[0016] Preferably, a U-shaped seat is fixedly connected to the end of the elastic telescopic rod located outside the chute. The support wheel is rotatably connected to the U-shaped seat. A winding roller, an unwinding roller and a driving member 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. When the driving member drives the winding roller to wind, it synchronously drives the unwinding roller to unwind.

[0017] By providing the unwinding roller and the winding roller, the grinding belt can be replaced to ensure the grinding performance of the grinding belt.

[0018] 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. The support wheel, the sliding rod and the receiving cavity are arranged on the mounting plate.

[0019] By setting the mounting portion as an automatic telescopic rod that can change in length, when the grinding mechanism enters the interior of the pressure vessel, the distance between the grinding belt and the inner side wall of the pressure vessel can be controlled by the automatic telescopic rod, so that the grinding mechanism can smoothly enter the interior of the pressure vessel.

[0020] Preferably, two sets of grinding components are provided, and the two sets of grinding components are centrosymmetric about the central axis of the pressure vessel. A grinding plate is provided on one side of the mounting block facing the bottom wall of the pressure vessel, and the grinding plate cooperates with the two sets of grinding components to comprehensively grind the bottom wall of the pressure vessel.

[0021] Preferably, the third driving component includes a motor three fixedly installed on the mounting block, a first gear rotatably connected to the mounting block, and a second gear fixedly connected to the mounting portion. The output end of the motor three is in transmission connection with the first gear through a transmission belt, the second gear meshes with the first gear, the motor three drives the first gear to rotate through the transmission belt, and the first gear drives the second gear and the mounting portion to rotate.

[0022] Preferably, the first driving component includes a motor one fixedly installed on the machine body, a lead screw fixedly connected to the output end of the motor one, and a mounting seat slidably connected to the machine body in the left-right direction. The lead screw extends in the left-right direction and is rotatably connected to the machine body. The mounting seat is in threaded cooperation with the lead screw. The motor one drives the lead screw to rotate, and the lead screw drives the mounting seat to move in the left-right direction;

[0023] The second driving component includes a motor two fixedly installed on the mounting seat and a support rod fixedly connected to the output end of the motor two. The mounting block is arranged on the support rod, and the motor two drives the support rod to drive the mounting block to rotate.

[0024] Preferably, a mounting disc is fixedly connected to the support rod. An outer sleeve rod sleeved on the outer periphery of the support rod is rotatably connected to the mounting disc. An inner sleeve rod is slidably connected to the outer sleeve rod in the left-right direction, and the inner sleeve rod is in non-rotating cooperation with the outer sleeve rod. The inner sleeve rod is in threaded cooperation with the support rod. The mounting block is fixedly connected to the inner sleeve rod. A motor four is fixedly connected to the mounting disc, and a driving gear is fixedly connected to the output end of the motor four. A toothed ring meshing with the driving gear is fixedly connected to the outer periphery of the outer sleeve rod.

[0025] By driving the outer sleeve rod and the inner sleeve rod to rotate through the motor four to drive the mounting block to move away from the bottom wall of the pressure vessel, not only can the speed of the mounting block moving away from the bottom wall be adjusted according to the actual grinding situation, but also this driving structure is separately provided for the mounting block, which can improve the stability during the operation of the overall equipment.

[0026] Preferably, a dirt collection box, a suction port, and a dust suction pump are arranged on the mounting block. The dust suction pump is fixedly installed on the mounting block, and the air inlet of the dust suction pump is communicated with the suction port, and the air outlet is communicated with the dirt collection box;

[0027] The supporting wheel is made of a flexible material, and the interior of the supporting wheel is a hollow structure.

[0028] When the supporting wheel supports the grinding belt against the inner wall of the pressure vessel, the supporting wheel can elastically deform according to the pressure received, so as to ensure the fitting state between the grinding belt and the pressure vessel.

[0029] The beneficial effect of the present invention is that by driving the rotation of the driving installation part, the angle between the grinding assembly and the inner side wall of the pressure vessel can be changed, so as to adapt to the bottom wall of the pressure vessel and the arc part at the intersection of the inner side wall and the bottom wall;

[0030] By driving the supporting wheel to move, the supporting wheel supports the grinding belt to abut against the inner wall of the pressure vessel as much as possible, so as to realize the grinding of the arc part and the bottom wall of the pressure vessel, so that the present invention can, after the grinding mechanism enters the pressure vessel, grind the inner side wall, the inner bottom wall of the pressure vessel and the arc part at the intersection of the inner side wall and the inner bottom wall 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. Description of the Drawings

[0031] Figure 1 is a top view of a grinding device for a pressure vessel of the present invention when grinding the pressure vessel.

[0032] Figure 2 is a schematic diagram of a grinding device for a pressure vessel of the present invention from a first perspective.

[0033] Figure 3 is a schematic diagram of a grinding device for a pressure vessel of the present invention from a second perspective.

[0034] Figure 4 is a schematic structural diagram of a grinding mechanism of a grinding device for a pressure vessel of the present invention.

[0035] Figure 5 is a schematic structural diagram of a grinding assembly of a grinding device for a pressure vessel of the present invention.

[0036] Figure 6 is a cross-sectional view of a grinding assembly of a grinding device for a pressure vessel of the present invention.

[0037] Figure 7 is a cross-sectional view of a supporting wheel and a mounting plate of a grinding device for a pressure vessel of the present invention.

[0038] Reference Signs:

[0039] 1. Body; 11. Support base; 12. Lead screw; 13. Mounting base; 14. Second motor; 15. Support rod; 16. Mounting plate; 17. Outer sleeve rod; 171. Gear ring; 18. Inner sleeve rod; 2. Mounting block; 20. Grinding plate; 21. Sleeve; 3. Mounting part; 31. Automatic telescopic rod; 32. Mounting plate; 33. Accommodation cavity; 34. Slide groove; 35. Take-up roller; 36. Pay-off roller; 37. Third gear; 38. Fourth gear; 39. Fifth gear; 4. Support wheel; 41. Slide bar; 42. U-shaped seat; 5. Grinding belt; 6. Dust collection box; 61. Suction port; 7. Clamping plate; 71. Electric push cylinder; 8. Fourth motor; 81. Driving gear; 9. Third motor; 91. First gear; 92. Second gear; 10. Pressure vessel. Detailed implementation mode

[0040] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, but should not be construed as a limitation of the present invention.

[0041] As Figures 1 to 7 shown, a grinding device for a pressure vessel of the present invention includes a body 1 and a grinding mechanism. Defining the axial direction of the pressure vessel 10 as the left-right direction, a clamping mechanism for clamping the pressure vessel 10, a first driving assembly for driving the grinding mechanism to move in the left-right direction, and a second driving assembly for driving the grinding mechanism to rotate around the central axis of the pressure vessel 10 are provided on the body 1.

[0042] The grinding mechanism includes a mounting block 2 and a grinding assembly. The grinding assembly includes a mounting part 3 rotatably connected to the mounting block 2, a plurality of support wheels 4 provided on the mounting part 3, and a grinding belt 5 surrounding the support wheels 4. The rotating shaft at the rotation connection of the mounting part 3 and the mounting block 2 extends in the front-back direction, and a third driving assembly for driving the mounting part 3 to rotate is provided on the mounting block 2. The plurality of support wheels 4 are evenly spaced in the left-right direction and are slidably connected to the mounting part 3 through slide bars 41. A fourth driving assembly for driving the slide bars 41 to drive the support wheels 4 to move is provided in the mounting part 3.

[0043] During grinding, the pressure vessel 10 is clamped and fixed by using the clamping mechanism, and then the first driving assembly is controlled to drive the grinding mechanism to move towards the inside of the pressure vessel 10, and the second driving assembly is controlled to drive the grinding mechanism to rotate around the central axis of the pressure vessel 10. At this time, the mounting part 3 of the grinding mechanism is in a state perpendicular to the inner wall of the pressure vessel 10.

[0044] After the grinding mechanism enters the interior of the pressure vessel 10, the grinding belt 5 abuts against the inner wall of the pressure vessel 10. As the grinding mechanism advances and rotates, the grinding belt 5 grinds the inner wall of the pressure vessel 10. When the grinding mechanism moves to the arc portion at the intersection of the inner wall and the inner bottom wall of the pressure vessel 10, the third driving assembly drives the mounting portion 3 to rotate towards the bottom wall of the pressure vessel 10. During the rotation process, the fourth driving assembly drives the sliding rod 41 to drive the supporting wheel 4 to move, so as to adapt to the change in the distance between the supporting wheel 4 and the inner wall of the pressure vessel 10 during the rotation of the mounting portion 3, so that the supporting wheel 4 supports the grinding belt 5 to abut against the inner wall of the pressure vessel 10 as much as possible, realizing the grinding of the arc portion of the inner wall of the pressure vessel 10.

[0045] When the mounting portion 3 rotates until the grinding belt 5 contacts the bottom wall of the pressure vessel 10, the first driving assembly drives the grinding mechanism to move a preset distance outward from 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. Thus, during the rotation of the grinding mechanism, the grinding belt 5 can grind the bottom wall of the pressure vessel 10, thereby realizing that the present invention can grind the inner wall, the inner bottom wall and the arc portion at the intersection of the inner wall and the inner bottom wall of 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.

[0046] As Figure 4 shown, to ensure the grinding effect and improve the grinding efficiency, in this embodiment, two sets of grinding assemblies are provided, and the two sets of grinding assemblies are centrosymmetric about the central axis of the pressure vessel 10. A grinding plate 20 is provided on one side of the mounting block 2 facing the bottom wall of the pressure vessel 10, and the grinding plate 20 cooperates with the two sets of grinding assemblies to comprehensively grind the bottom wall of the pressure vessel 10.

[0047] As Figures 1 to 3 shown, the clamping mechanism includes clamping plates 7 symmetrically arranged on the machine body 1 in the front-rear direction and an electric push cylinder 71 for driving the clamping plates 7 to move. The electric push cylinder 71 is fixedly installed on the machine body 1. The clamping plates 7 are slidably connected to the machine body 1 in the front-rear direction and are fixedly connected to the corresponding electric push cylinder 71. A support seat 11 is arranged on the machine body 1 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 plates 7 to move towards the pressure vessel 10 or drives the clamping plates 7 to move away from the pressure vessel 10, realizing the clamping or loosening of the pressure vessel 10.

[0048] The first driving assembly includes a first motor (not shown in the figure) fixedly installed on the machine body 1, a lead screw 12 fixedly connected to the output end of the first motor, 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. The mounting seat 13 is in threaded cooperation with the lead screw 12. The first motor drives the lead screw 12 to rotate, and the lead screw 12 drives the mounting seat 13 to move in the left-right direction.

[0049] The second driving assembly includes a second motor 14 fixedly installed on the mounting seat 13 and a support rod 15 fixedly connected to the output end of the second motor 14. An installation disk 16 is fixedly connected to the support rod 15. An outer sleeve rod 17 sleeved on the outer periphery of the support rod 15 is rotatably connected to the installation disk 16. An inner sleeve rod 18 is slidably connected to the outer sleeve rod 17 in the left-right direction. A convex strip (not shown in the figure) extends on the inner sleeve rod 18. A sliding groove (not shown in the figure) adapted to the convex strip is provided 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 rotationally stopped through the cooperation of the convex strip and the sliding groove.

[0050] As Figure 4 shown, the inner sleeve rod 18 is in threaded cooperation with the support rod 15. The installation block 2 is fixedly connected to the inner sleeve rod 18. A fourth motor 8 is fixedly connected to the installation disk 16. A driving gear 81 is fixedly connected to the output end of the fourth motor 8. A gear ring 171 meshing with the driving gear 81 is fixedly connected to the outer periphery of the outer sleeve rod 17.

[0051] When the first motor drives the lead screw 12 to drive the mounting seat 13 to move in the left-right direction, the second driving assembly, the installation 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. During the process of entering the pressure vessel 10, the second motor 14 drives the support rod 15 to rotate. The support rod 15 drives the installation block 2 and the grinding assembly to rotate around the central axis of the pressure vessel 10 through the installation disk 16, the outer sleeve rod 17 and the inner sleeve rod 18, so as to drive the grinding assembly to grind the inner side wall of the pressure vessel 10.

[0052] Continue to refer to Figure 4 , the third driving assembly includes a third motor 9 fixedly installed on the installation block 2, a first gear 91 rotatably connected to the installation block 2, and a second gear 92 fixedly connected to the installation part 3. The output end of the third motor 9 is in transmission connection with the first gear 91 through a transmission belt. The second gear 92 meshes with the first gear 91. The third motor 9 drives the first gear 91 to rotate through the transmission belt, and the first gear 91 drives the second gear 92 and the installation part 3 to rotate.

[0053] The installation part 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 wheels 4 and the sliding rods 41 are arranged on the mounting plate 32. As an example, the automatic telescopic rod 31 is an electric telescopic rod. On one side of the mounting block 2 facing the bottom wall of the pressure vessel 10, a sleeve 21 is elastically connected. The sleeve 21 is slidably connected to the outer periphery of the inner sleeve rod 18 in the left-right direction and is in anti-rotation cooperation 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.

[0054] 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 into the pressure vessel 10 until 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 a preset distance, the distance sensor transmits a signal to the first motor, the third motor 9, and the fourth motor 8. The first motor controls the lead screw 12 to stop rotating. The third motor 9 controls the installation part 3 to rotate towards the bottom wall of the pressure vessel 10. The fourth motor 8 drives the driving gear 81 to rotate. The driving 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 in threaded cooperation with the support rod 15, during the rotation of the inner sleeve rod 18, the mounting block 2 will be driven to slowly move 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, realizing the grinding of the arc part and the bottom wall of the pressure vessel 10 by the grinding belt 5. At the same time, during the process of the mounting block 2 moving 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, avoiding interference of the grinding plate 20 with the two sets of grinding assemblies.

[0055] As Figures 5 to 7 shown, the fourth driving component includes a filling liquid (not shown in the figure) and a receiving cavity 33 opened in the mounting plate 32. The mounting plate 32 is provided with a sliding groove 34 for receiving the sliding rod 41. The sliding groove 34 communicates with the receiving cavity 33. The filling liquid is filled in the sliding groove 34 and the receiving cavity 33. During the process of the third driving component driving the installation part 3 to drive the grinding assembly to rotate towards the bottom wall of the pressure vessel 10, the support wheel 4 pressed by the inner wall of the pressure vessel 10, and its corresponding sliding rod 41 will move towards the receiving cavity 33. The filling liquid in the receiving cavity 33 is squeezed and will move into the sliding groove 34 corresponding to the support wheel 4 that is not squeezed or is less squeezed, thereby pushing the support wheel 4 that is not squeezed or is less squeezed to push the grinding belt 5 against the inner wall of the pressure vessel 10, making all the grinding belts 5 supported by the support wheels 4 contact the inner wall of the pressure vessel 10 as much as possible to ensure the grinding effect.

[0056] The sliding rod 41 is an elastic telescopic rod. One end of the elastic telescopic rod located outside the sliding groove 34 is fixedly connected with 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 inside 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 vessel 10, the support wheel 4 can elastically deform according to the pressure received, so as to ensure the fitting state between the grinding belt 5 and the pressure vessel 10.

[0057] Continue to refer to Figure 7 , a winding roller 35, an unwinding roller 36 and a driving member are arranged in the installation part 3. The grinding belt 5 is sleeved 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 around the unwinding roller 36, and the other end is wound around the winding roller 35. When the driving member drives the winding roller 35 to wind, it synchronously drives the unwinding roller 36 to unwind. When the support wheel 4 is not extruded by external force, the elastic telescopic rod is in a contracted state. When the support wheel 4 moves due to different extrusion forces, the elastic telescopic rod can quickly respond and tension the grinding belt 5, so as to ensure that the grinding belt 5 will not slip off the support wheel 4 due to slack. Moreover, 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.

[0058] The driving member includes a motor five (not shown in the figure) fixedly installed on the mounting plate 32 and a gear three 37 rotatably connected to the mounting plate 32. The output end of the motor five is in transmission connection with the gear three 37 through a transmission belt. The winding roller 35 is fixedly connected with a coaxially arranged gear four 38, and the unwinding roller 36 is fixedly connected with a coaxially arranged gear five 39. The gear four 38 and the gear five 39 are symmetrically arranged on both sides of the gear three 37 and meshed with the gear three 37. The motor five drives the gear three 37 to rotate, and the gear three 37 drives the gear four 38 to rotate, so that the winding roller 35 winds the grinding belt 5. At the same time, the gear three 37 drives the gear five 39 to rotate synchronously, so that the unwinding roller 36 winds the grinding belt 5.

[0059] As Figure 2 and Figure 4 shown, in order to avoid the influence of the debris ground off on the grinding effect, in this embodiment, a dirt collection box 6, a suction port 61 and a dust suction pump (not shown in the figure) are arranged on the mounting block 2. The dust suction pump is fixedly installed on the mounting block 2, and the air inlet of the dust suction pump is communicated with the suction port 61, and the air outlet is communicated with the dirt collection box 6. During the grinding process of the grinding belt 5, the dust suction pump operates, and the grinding debris is sucked through the suction port 61. 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 for cleaning.

[0060] The specific working process of a grinding device for a pressure vessel according to the present invention is as follows: In the initial state, the automatic telescopic rod 31 is perpendicular to the support rod 15. Place the pressure vessel 10 on the support seat 11 of the machine body 1, and control the electric push cylinder 71 to drive the clamping plate 7 to move towards the pressure vessel 10 to clamp and fix the pressure vessel 10.

[0061] Control the first motor to drive the lead screw 12 to drive the mounting seat 13 to move towards the pressure vessel 10. The mounting seat 13 drives the mounting block 2 and the grinding assembly to move into the pressure vessel 10. When the grinding assembly enters the pressure vessel 10, control the automatic telescopic rod 31 to extend so that the grinding belt 5 fits against the inner wall of the pressure vessel 10.

[0062] Control the second motor 14 to drive the support rod 15 to rotate. 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 disc 16, the outer sleeve rod 17 and the inner sleeve rod 18, so as to realize the grinding of the inner wall of the pressure vessel 10 by the grinding belt 5.

[0063] 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 first motor, the third motor 9 and the fourth motor 8.

[0064] The first motor controls the lead screw 12 to stop rotating, and the mounting seat 13 stops advancing. The third motor 9 controls the mounting part 3 to rotate towards the bottom wall of the pressure vessel 10. The fourth motor 8 drives the driving gear 81 to rotate. The driving 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 in threaded cooperation with the support rod 15, during the rotation of the inner sleeve rod 18, it drives the mounting block 2 and the grinding head to move 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, realizing the grinding of the arc part and the bottom wall of the pressure vessel 10 by the grinding belt 5. Moreover, during the movement of the mounting block 2, it will drive the grinding plate 20 away from the bottom wall of the pressure vessel 10 through the sleeve 21, avoiding interference of the grinding plate 20 on the two grinding assemblies, so as to achieve the effect that the grinding device comprehensively grinds the inner wall, the inner bottom wall and the arc part at the intersection of the inner wall and the inner bottom wall of the pressure vessel 10 at one time.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to 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 includes a mounting block and a grinding assembly, wherein the grinding assembly includes 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 of the rotation connection between the mounting part and the mounting block extends in the front-to-back direction, and a driving component 3 for driving the mounting part to rotate is provided on the mounting block, a plurality of supporting wheels are evenly spaced in the left-right direction, and are slidably connected to the mounting part through a sliding rod, and a driving component 4 for driving the sliding rod to drive the supporting wheels to move is provided in the mounting part; When the drive assembly 3 driving mounting portion drives the grinding assembly to rotate toward the bottom wall of the pressure vessel, the drive assembly 4 driving sliding rod drives the supporting wheel to move, so that the supporting wheel pushes the grinding belt to fit the arc portion where the inner wall and the bottom wall of the pressure vessel meet; The drive assembly 4 includes a filling liquid and a receiving cavity provided in the mounting portion, the mounting portion is provided with a slide groove for receiving a slide rod, the slide groove is communicated with the receiving cavity, the filling liquid is filled in the slide groove and the receiving cavity, and in the process that the drive assembly 3 drives the mounting portion to drive the grinding assembly 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 moves toward the receiving cavity to squeeze the filling liquid to push the other supporting wheels against the inner wall of the pressure vessel; 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; 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 arranged 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.

2. The grinding device for a pressure vessel according to claim 1, 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.

3. The grinding device for a pressure vessel according to claim 1, 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.

4. The grinding device for a pressure vessel according to claim 1 or 3, 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.

5. 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.

6. The grinding device for a pressure vessel according to claim 5, 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.

7. 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.

Images