CN113458947A

CN113458947A - Pressure vessel rapid polishing and rust removing device and using method thereof

Info

Publication number: CN113458947A
Application number: CN202111035303.3A
Authority: CN
Inventors: 李福栋
Original assignee: Shandong Haoyang Testing Co ltd
Current assignee: Yantai Pengbo Trading Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-10-01
Anticipated expiration: 2041-09-06
Also published as: CN113458947B

Abstract

The invention discloses a pressure vessel rapid polishing and rust removing device and a using method thereof, and the device comprises a fixed disk fixedly connected on a support, wherein one side of the fixed disk is rotatably connected with a rotating plate, the other side of the fixed disk is fixedly provided with a motor in driving connection with the rotating plate, two polishing pieces capable of synchronously moving towards or back to each other are slidably mounted on the rotating plate, a dust hood at the top of each polishing piece is connected with a dust collector fixed on the fixed disk through a hose, a plurality of first through holes communicated with the dust hood are formed in the polishing pieces in parallel along the vertical direction, a plurality of air bags are fixedly connected at the bottom of the inner side of each first through hole, a plurality of movable cavities are formed below the inner parts of the polishing pieces, and contact pieces are slidably connected in the movable cavities. The invention uses the sound change and whether the sound disappears to indicate whether the grinding piece is contacted with the inner wall of the container, thereby avoiding using the traditional circuit element and improving the durability of the rust removing device.

Description

Pressure vessel rapid polishing and rust removing device and using method thereof

Technical Field

The invention relates to the technical field of polishing, in particular to a pressure container rapid polishing and rust removing device and a using method thereof.

Background

The pressure vessel can generate rust after long-time use, so that the rust removal maintenance needs to be carried out on the pressure vessel at regular time, the prior rust removal method generally adopts a grinding device to be in contact with the rust, the rust is removed through the friction force generated by the grinding device and the rust, however, when the inside of the pipe or the container is polished, a person cannot directly observe the distance between the polishing apparatus and the inner wall of the pipe or the container, therefore, the polishing thickness cannot be accurately controlled, the Chinese patent with the application number of 201911245670.9 discloses a pipeline mouth polishing device for pipeline processing, when the scheme is used, the heights of the two adjusting plates are adjusted, the two adjusting plates are inserted into the pipeline, and by screwing the two knobs, and then adjust the position of two regulating plates, the third piece of polishing receives the extrusion to promote the vertical removal of rectangle slider, the pilot lamp lights, explains that first piece of polishing is complete with the contact of pipeline inner wall. The device utilizes the cooperation of conducting block, pilot lamp to explain whether polishing piece contacts with the container inner wall, and the light is lighted and is explained the contact. However, the circuit components utilized by the device are easily damaged by corrosion and other reasons in the container polishing environment, and are not durable.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, one object of the present invention is to provide a pressure vessel rapid polishing and rust removing device and a use method thereof, which utilize sound change and whether sound disappears to indicate whether a polishing member is in contact with the inner wall of the vessel, and solve the technical problem that circuit elements adopted in the prior art are easily corroded.

The invention provides a rapid polishing and rust removing device for a pressure container, which comprises a fixed disk fixedly connected to a support, wherein a rotating plate is rotatably connected to one side of the fixed disk, a motor which is in driving connection with the rotating plate is fixed to the other side of the fixed disk, two polishing pieces which can synchronously move towards each other or back to back are slidably mounted on the rotating plate, a dust hood at the top of each polishing piece is connected with a dust collector fixed on the fixed disk through a hose, a plurality of first through holes communicated with the dust hoods are formed in the polishing pieces in parallel along the vertical direction, a plurality of air bags are fixedly connected to the bottoms of the inner sides of the first through holes, a plurality of movable cavities are formed in the lower portion of the inner portion of each polishing piece, and contact pieces are slidably connected to the inner portions of the movable cavities.

The first transmission mechanism is linked with the contact piece, slides upwards along the movable cavity through the contact piece to drive the air bag to expand to form a fold structure, so that whistle is generated in the first through hole when air flow passes through the air bag.

Preferably, a plurality of mounting grooves are formed in the grinding piece and positioned on the periphery of the contact piece, the first transmission mechanism comprises a fixed cylinder fixed at the top of the inner side of the mounting groove, a piston is connected in the fixed cylinder in a sliding manner, fluid is contained between the piston and a cavity at the top of the fixed cylinder, the bottom of the piston is connected with a piston rod, the bottom of the piston rod is connected with a connecting plate, the inner side of the movable cavity is provided with a vertical chute communicated with the mounting groove, one end of the connecting plate extends into the movable cavity along the vertical sliding groove and is fixedly connected with the contact element, and the connecting plate is connected with the vertical sliding groove in a sliding mode, annular pipes communicated with the air bags are arranged on the outer sides of the first through holes in the polishing piece, and the fixing barrel is communicated with the annular pipes through pipelines.

Preferably, a plurality of second through holes are formed in the two sides of the first through hole, valves are arranged on the inner sides of the second through holes, and chip suction pipes communicated with the grinding pieces are connected to the two sides of each grinding piece at positions corresponding to the second through holes.

Preferably, the chip suction device further comprises a second transmission mechanism which is linked with the contact piece, the contact piece slides along the inner part of the movable cavity and completely enters the movable cavity, and the second transmission mechanism drives the valve to act so as to enable the chip suction pipe to be communicated with the second through hole.

Preferably, second drive mechanism is including a plurality of setups polish an inside and be located the valve slide of second through-hole top, the valve is located correspondingly in the valve slide and be connected with its sliding fit, the annular spout that is linked together with it is seted up to the top of valve slide, and the inside of annular spout has an annular connecting plate along vertical direction sliding connection, annular connecting plate and all the equal fixed connection of valve, the spout has been seted up to the both sides in activity chamber, second drive mechanism still including slide set up in the inside L shape connecting plate of spout, the top of L shape connecting plate with annular connecting plate fixed connection, the bottom of L shape connecting plate with contact fixed connection.

Preferably, two adjacent first through holes are communicated with each other through a movable groove, two transmission blocks are connected to the inside of each movable groove in a sliding mode, a third transmission mechanism linked with the contact element is further arranged inside the polishing piece, and the third transmission mechanism drives the transmission blocks to slide into the first through holes through the contact element in an upward sliding mode along the movable cavity so as to change the volume of the first through holes.

Preferably, the third drive mechanism is including seting up the recess of activity groove top both sides and bottom both sides, every the inside of recess all is connected with the dead lever along its length direction, the top and the bottom of transmission piece slide respectively to cup joint in corresponding on the dead lever, and the spring has been cup jointed in the outside of dead lever, the third drive mechanism still including along vertical direction fixed connection in transfer line on the contact, the top of transfer line upwards passes extend to behind the activity chamber the activity inslot portion, and the top of transfer line is connected with the second inclined plane piece, one side of transmission piece be formed with the first inclined plane piece of second inclined plane piece sliding fit.

Preferably, the inner side of the rotating plate is rotatably connected with a bidirectional threaded rod, one end of the bidirectional threaded rod is fixedly connected with a handle, limiting rods are arranged on two sides of the bidirectional threaded rod, two ends of each limiting rod are fixedly connected with the rotating plate respectively, a connecting frame is sleeved on the bidirectional threaded rod in a threaded manner and is connected with the limiting rods in a sliding manner, and the polishing piece is fixedly installed on the connecting frame.

The invention also provides a use method of the pressure vessel rapid polishing and rust removing device, which comprises the following steps: the two polishing pieces are placed on the inner side of a pressure container and close to the inner wall of the container, the dust collector is started, the contact piece is firstly contacted with the inside of the container, the contact piece moves towards the inner side of the movable cavity and drives the first transmission mechanism to act to enable the air bag to expand to form a fold structure, air vortex with multiple frequencies is formed when air flow passes through the edge of the air bag in the fold shape, standing waves are formed in the first through hole by the air flow to generate whistle, when the contact piece completely enters the movable cavity, the first through hole is blocked by the inner wall of the container when the polishing pieces are contacted with the inner wall of the container, the whistle disappears at the moment, the motor is started, and the motor drives the polishing pieces to rotate through the rotating plate to polish the inner wall of the container.

The beneficial effects of the invention are as follows: the device is characterized in that the bottom of a first through hole in a polishing piece is connected with a plurality of air bags, a first transmission mechanism enables the air bags to expand to form a fold structure through the movement of a contact piece in a movable cavity, airflow entering the first through hole from the bottom of the air bags generates whistle, meanwhile, a third transmission mechanism drives a transmission block to slide in the first through hole through the upward sliding of the contact piece along the movable cavity, so that the volume of the first through hole is reduced, the whistle is changed from bass to treble, when the contact piece completely slides into the movable cavity, the first through hole is blocked, and the whistle disappears. When the whistle changes from low to high, the grinding member is about to contact the inner wall of the container. When the whistle disappears, the polishing piece is completely contacted with the inner wall of the container, and the situation that whether the polishing piece is contacted with the container or not is judged by using a traditional circuit element is avoided, so that the durability of the rust removing device is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic overall structure diagram of a rapid polishing and rust removing device for a pressure vessel, which is disclosed by the invention;

FIG. 2 is a schematic view of a first state of the air bag of the present invention;

FIG. 3 is a schematic structural view of an airbag in a second state according to the present invention;

FIG. 4 is a first cross-sectional view of the connecting frame of the present invention;

FIG. 5 is a second cross-sectional view of the connecting frame of the present invention;

FIG. 6 is an enlarged view of a portion of the structure shown at A in FIG. 4;

FIG. 7 is a schematic view of a portion of the enlarged structure at B in FIG. 4;

FIG. 8 is a first schematic sectional top view of the connecting frame of the present invention;

FIG. 9 is a first side cross-sectional view of the connecting frame of the present invention;

FIG. 10 is a second side cross-sectional view of the connecting frame of the present invention;

FIG. 11 is a second top cross-sectional view of the connecting frame of the present invention;

fig. 12 is a partially enlarged schematic view of a portion C in fig. 11.

In the figure: 1. fixing the disc; 2. a support; 3. a rotating plate; 4. a motor; 5. a bidirectional threaded rod; 6. a limiting rod; 7. a vacuum cleaner; 8. a connecting frame; 9. polishing the workpiece; 10. a first through hole; 11. a dust hood; 12. a hose; 13. a second through hole; 14. a scrap suction pipe; 15. a valve; 16. a valve slide; 17. an annular chute; 18. an annular connecting plate; 19. an L-shaped connecting plate; 20. a movable groove; 21. a groove; 22. fixing the rod; 23. a transmission block; 24. a first bevel block; 25. a spring; 26. a second bevel block; 27. a transmission rod; 28. a movable cavity; 29. a contact member; 30. a chute; 31. an air bag; 32. an annular tube; 33. mounting grooves; 34. a fixed cylinder; 35. a piston; 36. a piston rod; 37. a connecting plate; 38. a vertical chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment discloses a pressure vessel rapid polishing and rust removing device, as shown in fig. 1-12, the device comprises a fixed disk 1 fixedly connected to a support 2, one side of the fixed disk 1 is rotatably connected with a rotating plate 3, the other side of the fixed disk 1 is fixedly provided with a motor 4 in driving connection with the rotating plate 3, two polishing pieces 9 capable of synchronously moving towards each other or moving towards the back are slidably mounted on the rotating plate 3, a dust hood 11 at the top of each polishing piece 9 is connected with a dust collector 7 fixed on the fixed disk 1 through a hose 12, a plurality of first through holes 10 communicated with the dust hood 11 are formed in the polishing pieces 9 in parallel along the vertical direction, a plurality of air bags 31 are fixedly connected to the bottom of the inner sides of the first through holes 10, a plurality of movable cavities 28 are formed below the inner part of each polishing piece 9, and contact pieces 29 are slidably connected to the inner parts of the movable cavities 28. The polishing device further comprises a first transmission mechanism which is linked with the contact element 29, the first transmission mechanism drives the air bag 31 to expand to form a fold structure through the upward sliding of the contact element 29 along the movable cavity 28, so that whistle is generated in the first through hole 10 when air flow passes through the air bag 31, when the contact element 29 completely enters the movable cavity 28 and the polishing element 9 is in contact with the inner wall of the container, the first through hole 10 can be blocked by the inner wall of the container, the whistle disappears at the moment, and whether the polishing element 9 is attached to the inner wall of the pressure container or not is judged through the generation and disappearance of the whistle in the first through hole 10.

Specifically, as shown in fig. 5, a plurality of mounting grooves 33 are formed in the polishing member 9 at the periphery of the contact member 29, the first transmission mechanism includes a fixed cylinder 34 fixed at the top of the inner side of the mounting groove 33, a piston 35 is slidably connected inside the fixed cylinder 34, fluid is contained between the piston 35 and a cavity at the top of the fixed cylinder 34, a piston rod 36 is connected to the bottom of the piston 35, a connecting plate 37 is connected to the bottom of the piston rod 36, a vertical sliding groove 38 communicated with the mounting groove 33 is formed in the inner side of the movable cavity 28, one end of the connecting plate 37 extends into the movable cavity 28 along the vertical sliding groove 38 and is fixedly connected with the contact member 29, the connecting plate 37 is slidably connected with the vertical sliding groove 38, an annular tube 32 communicated with the air bag 31 is arranged outside each first through hole 10 in the polishing member 9, the fixed cylinder 34 is communicated with the annular tube 32 through a pipeline, the contact element 29 drives the piston rod 36 to move upwards through the connecting plate 37, the piston rod 36 pushes the piston 35 to press liquid into the air bag 31 through the annular pipe 32, the air bag 31 is expanded to change from a first state (shown in figure 2) to a second state (shown in figure 3), a plurality of air bags 31 in the second state form a shape similar to a fold, when air flow passes through the vicinity of the edge of the fold, air vortexes with various frequencies are formed, and standing waves are formed in the first through hole 10 by the air flow to generate whistling.

As shown in fig. 4, in this embodiment, a plurality of second through holes 13 are formed on both sides of the first through hole 10, a valve 15 is disposed inside each second through hole 13, a dust suction pipe 14 communicated with each second through hole 13 is connected to both sides of the polishing member 9 at a position corresponding to each second through hole 13, and waste dust generated by polishing when the polishing member 9 contacts with the inner wall of the pressure container is sucked into the vacuum cleaner 7 through the dust suction pipe 14.

Further, a second transmission mechanism linked with the contact element 29 is further arranged inside the polishing element 9, in the process that the contact element 29 slides along the inside of the movable cavity 28 and completely enters the movable cavity 28, the second transmission mechanism drives the valve 15 to act so as to enable the chip suction pipe 14 to be communicated with the second through hole 13, when the valve 15 is in an initial state, the valve 15 is in a closed state, the first through hole 10 is in an air-permeable state, air flow enters the movable cavity 28 from the first through hole 10 to generate whistle, when the contact element 29 completely enters the movable cavity 28, the first through hole 10 is blocked, the whistle disappears, the polishing element 9 is shown to be completely contacted with the inner wall of the container, the second transmission mechanism drives the valve 15 so as to enable the chip suction pipe 14 to be communicated with the second through hole 13, and the polishing element 9 is in a working state.

Specifically, the second transmission mechanism in this embodiment includes a plurality of valve slideways 16 disposed inside the polishing member 9 and located above the second through holes 13, the valves 15 are disposed inside the corresponding valve slideways 16 and connected with the valve slideways in a sliding fit manner, an annular chute 17 communicated with the valve slideways 16 is disposed above the valve slideways 16, an annular connecting plate 18 is slidably connected inside the annular chute 17 along the vertical direction, the annular connecting plate 18 is fixedly connected with all the valves 15, the chutes 30 are disposed on two sides of the movable cavity 28, the second transmission mechanism further includes an L-shaped connecting plate 19 slidably disposed inside the chute 30, the top end of the L-shaped connecting plate 19 is fixedly connected with the annular connecting plate 18, the bottom end of the L-shaped connecting plate 19 is fixedly connected with the contact member 29, the contact member 29 drives the annular connecting plate 18 to move upward through the L-shaped connecting plate 19, the annular connecting plate 18 drives the valves 15 to move upward, the second through hole 13 is vented.

As a preferred embodiment, the two adjacent first through holes 10 are communicated through the opened movable grooves 20, two transmission blocks 23 are connected inside each movable groove 20 in a sliding mode, a third transmission mechanism linked with the contact member 29 is further arranged inside the grinding member 9, and the third transmission mechanism drives the transmission blocks 23 to slide into the first through holes 10 through the upward sliding of the contact member 29 along the movable cavity 28 so as to change the volume of the first through holes 10.

Further, as shown in fig. 6, the third transmission mechanism includes grooves 21 formed on both sides of the top end and both sides of the bottom end of the movable slot 20, the inside of each groove 21 is connected with a fixed rod 22 along the length direction thereof, the top end and the bottom end of the transmission block 23 are respectively slidably sleeved on the corresponding fixed rods 22, and the outside of the fixed rod 22 is sleeved with a spring 25, the third transmission mechanism further includes a transmission rod 27 fixedly connected to the contact member 29 along the vertical direction, the top end of the transmission rod 27 extends into the movable slot 20 after passing through the movable cavity 28, and the top of the transmission rod 27 is connected with a second inclined block 26, one side of the transmission block 23 is formed with a first inclined block 24 slidably engaged with the second inclined block 26, the contact member 29 drives the second inclined block 26 to move upward through the transmission rod 27, the second inclined block 26 pushes the first inclined block 24 to move the transmission block 23 outward, the movement of the driving block 23 makes the volume of the first through hole 10 smaller, and then the tone becomes higher, and the volume of the first through hole 10 becomes smaller, so that the whistle sound changes from low tone to high tone, indicating that the polishing member 9 is about to contact the inner wall of the container.

As shown in fig. 1, the inboard of rotor plate 3 is rotated and is connected with two-way threaded rod 5, the one end fixedly connected with handle of two-way threaded rod 5, the both sides of two-way threaded rod 5 all are equipped with gag lever post 6, and the both ends of gag lever post 6 respectively with rotor plate 3 fixed connection, threaded sleeve has link 8 on two-way threaded rod 5, link 8 and gag lever post 6 sliding connection, 9 fixed mounting of polishing is on link 8, when polishing pressure vessel's mouth of pipe, put into the container inboard with two pieces of polishing 9, adjust the distance between two pieces of polishing 9 and the container inner wall through rotatory two-way threaded rod 5.

The invention provides a pressure vessel rapid polishing and rust removing device, which has the detailed working principle that: putting two grinding members 9 into the pressure container, wherein the valve 15 is in a closed state, the first through hole 10 is in a ventilation state, the air bag 31 is in a first state (as shown in figure 2), no sound is generated, starting the dust collector 7, rotating the two-way threaded rod 5 to enable the two grinding members 9 to move outwards to be close to the inner wall of the container, the contact member 29 firstly contacts with the inside of the container, the contact member 29 drives the piston rod 36 to move upwards through the connecting plate 37 while the contact member 29 moves towards the inner side of the movable cavity 28, the piston rod 36 pushes the piston 35 to press liquid into the air bag 31 through the annular pipe 32, the air bag 31 is expanded, and airflow passes through the air bag 31 and forms standing waves in the first through hole 10 to generate whistling; the contact member 29 drives the second inclined block 26 to move upwards through the transmission rod 27, the second inclined block 26 pushes the first inclined block 24 to enable the transmission block 23 to move outwards, and the volume of the first through hole 10 is reduced due to the movement of the transmission block 23, so that the tone is increased; the contact element 29 drives the annular connecting plate 18 to move upwards through the L-shaped connecting plate 19, the annular connecting plate 18 drives the valve 15 to move upwards, the second through hole 13 is ventilated, when the contact element 29 completely enters the movable cavity 28, the grinding element 9 is contacted with the inner wall of the container, the first through hole 10 is blocked by the inner wall of the container, the whistle disappears, the bidirectional threaded rod 5 stops rotating, the valve 15 is opened, the second through hole 13 and the scrap suction pipe 14 are ventilated, the motor 4 is started, the motor 4 drives the grinding element 9 to rotate through the rotating plate 3 to grind the inner wall of the container, and grinding scraps can be collected into the dust collector 7 through the scrap suction pipe 14; after polishing, the motor 4 and the dust collector 7 are turned off, and the bidirectional threaded rod 5 is rotated reversely, so that the polishing piece 9 moves inwards to be separated from the inner wall of the container. Under the elasticity of the spring 25, the driving block 23 is restored, the contact member 29 is moved downwards to restore the initial state through the cooperation of the first inclined plane block 24 and the second inclined plane block 26, and further the air bag 31 is changed from the second state (as shown in fig. 3) to the first state (as shown in fig. 2), so that the valve 15 is moved to the original position, and the second through hole 13 is blocked.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A pressure vessel rapid polishing and rust removing device comprises a fixed disk (1) fixedly connected on a support (2), wherein a rotating plate (3) is rotatably connected to one side of the fixed disk (1), and a motor (4) in driving connection with the rotating plate (3) is fixed to the other side of the fixed disk (1), and is characterized in that two polishing pieces (9) capable of synchronously moving towards each other or moving towards the back are slidably mounted on the rotating plate (3), a dust hood (11) at the top of each polishing piece (9) is connected with a dust collector (7) fixed on the fixed disk (1) through a hose (12), a plurality of first through holes (10) communicated with the dust hood (11) are arranged in the polishing pieces (9) in parallel along the vertical direction, a plurality of air bags (31) are fixedly connected to the bottom of the inner side of the first through holes (10), and a plurality of movable cavities (28) are arranged below the inner part of each polishing piece (9), a contact member (29) is connected inside the movable cavity (28) in a sliding manner;

the whistle noise generator further comprises a first transmission mechanism which is linked with the contact piece (29), and the first transmission mechanism drives the air bag (31) to expand to form a folded structure by sliding the contact piece (29) upwards along the movable cavity (28) so that whistle is generated in the first through hole (10) when air flows pass through the air bag (31).

2. The pressure vessel rapid grinding and rust removing device as claimed in claim 1, wherein a plurality of mounting grooves (33) are formed in the periphery of the contact member (29) inside the grinding member (9), the first transmission mechanism comprises a fixed cylinder (34) fixed on the top of the inner side of the mounting groove (33), a piston (35) is connected inside the fixed cylinder (34) in a sliding manner, fluid is contained between the piston (35) and a cavity on the top of the fixed cylinder (34), a piston rod (36) is connected to the bottom of the piston (35), a connecting plate (37) is connected to the bottom of the piston rod (36), a vertical sliding groove (38) communicated with the mounting groove (33) is formed in the inner side of the movable cavity (28), and one end of the connecting plate (37) extends into the movable cavity (28) along the vertical sliding groove (38) and is fixedly connected with the contact member (29), and the connecting plate (37) is connected with the vertical sliding groove (38) in a sliding manner, an annular pipe (32) communicated with the air bag (31) is arranged inside the grinding piece (9) and positioned on the outer side of each first through hole (10), and the fixed cylinder (34) is communicated with the annular pipe (32) through a pipeline.

3. The rapid grinding and rust removing device for the pressure vessels as claimed in claim 1 or 2, wherein a plurality of second through holes (13) are formed in both sides of the first through hole (10), a valve (15) is arranged on the inner side of each second through hole (13), and a scrap suction pipe (14) communicated with each second through hole (13) is connected to both sides of the grinding member (9) at a position corresponding to the second through hole (13).

4. The pressure vessel rapid grinding and rust removing device as claimed in claim 3, further comprising a second transmission mechanism linked with the contact member (29), wherein the second transmission mechanism drives the valve (15) to operate to conduct the scrap suction pipe (14) and the second through hole (13) in the process that the contact member (29) slides along the inside of the movable cavity (28) and completely enters the movable cavity (28).

5. The pressure vessel rapid grinding and rust removing device according to claim 4, wherein the second transmission mechanism comprises a plurality of valve slideways (16) which are arranged inside the grinding member (9) and are positioned above the second through holes (13), the valves (15) are positioned in the corresponding valve slideways (16) and are connected with the valve slideways in a sliding fit manner, an annular sliding chute (17) communicated with the valve slideways is arranged above the valve slideways (16), an annular connecting plate (18) is connected inside the annular sliding chute (17) in a sliding manner along the vertical direction, the annular connecting plate (18) is fixedly connected with all the valves (15), sliding chutes (30) are arranged on two sides of the movable cavity (28), and the second transmission mechanism further comprises an L-shaped connecting plate (19) which is arranged inside the sliding chute (30) in a sliding manner, the top end of the L-shaped connecting plate (19) is fixedly connected with the annular connecting plate (18), and the bottom end of the L-shaped connecting plate (19) is fixedly connected with the contact element (29).

6. The quick grinding and rust removing device for the pressure vessels as claimed in claim 5, wherein two adjacent first through holes (10) are communicated with each other through an opened movable groove (20), two transmission blocks (23) are connected to the inside of each movable groove (20) in a sliding manner, a third transmission mechanism linked with the contact member (29) is further arranged inside the grinding member (9), and the third transmission mechanism drives the transmission blocks (23) to slide into the first through holes (10) through the upward sliding of the contact member (29) along the movable cavity (28) so as to change the volume of the first through holes (10).

7. The pressure vessel rapid grinding and rust removing device as claimed in claim 6, wherein the third transmission mechanism comprises grooves (21) formed on two sides of the top end and two sides of the bottom end of the movable groove (20), each groove (21) is connected with a fixed rod (22) along the length direction thereof, the top end and the bottom end of each transmission block (23) are respectively sleeved on the corresponding fixed rods (22) in a sliding manner, a spring (25) is sleeved on the outer side of each fixed rod (22), the third transmission mechanism further comprises a transmission rod (27) fixedly connected to the contact member (29) along the vertical direction, the top end of the transmission rod (27) upwards penetrates through the movable cavity (28) and then extends into the movable groove (20), and the top of the transmission rod (27) is connected with a second inclined block (26), and a first inclined plane block (24) in sliding fit with the second inclined plane block (26) is formed on one side of the transmission block (23).

8. The pressure vessel rapid grinding and rust removing device as claimed in any one of claims 1, 2 and 4-7, wherein a bidirectional threaded rod (5) is rotatably connected to the inner side of the rotating plate (3), a handle is fixedly connected to one end of the bidirectional threaded rod (5), limiting rods (6) are respectively arranged on two sides of the bidirectional threaded rod (5), two ends of each limiting rod (6) are respectively and fixedly connected with the rotating plate (3), a connecting frame (8) is sleeved on the bidirectional threaded rod (5) in a threaded manner, the connecting frame (8) is in sliding connection with the limiting rods (6), and the grinding member (9) is fixedly mounted on the connecting frame (8).

9. The use method of the rapid grinding and rust removing device for the pressure vessel as claimed in claim 8 is characterized by comprising the following steps: placing two of said sanding elements (9) inside the pressure vessel close to the inner wall of the vessel, activating said vacuum cleaner (7), said contact element (29) first coming into contact with the interior of the vessel, and while the contact member (29) is moving to the inside of the movable chamber (28), the first transmission mechanism is driven to act to expand the air bag (31) to form a folded structure, when the air flow passes through the edge of the air bag (31) in the folded shape, forming air swirls of various frequencies, the air flow forming standing waves in the first through-hole (10) to generate whistling, when the contact member (29) is completely inserted into the movable cavity (28) and the grinding member (9) is in contact with the inner wall of the container, the first through hole (10) is blocked by the inner wall of the container, the whistle disappears at the moment, the motor (4) is started, the motor (4) drives the grinding piece (9) to rotate through the rotating plate (3) to grind the inner wall of the container.