CN115072644B

CN115072644B - Conveying device and method based on petroleum products

Info

Publication number: CN115072644B
Application number: CN202210859932.6A
Authority: CN
Inventors: 张保海; 张保生; 邓嵩
Original assignee: Jiangsu Yuli New Energy Technology Co ltd
Current assignee: Jiangsu Yuli New Energy Technology Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-03-31
Anticipated expiration: 2042-07-22
Also published as: CN115072644A

Abstract

The invention discloses a conveying device and a conveying method based on petroleum products, which relate to the technical field of petroleum products, and the technical scheme comprises the following key points: the first carrier roller and the second carrier roller are rotatably connected to the conveying platform and are used for conveying the petroleum barrel; the U-shaped opening is formed in the conveying platform; pulling mechanism, set up on the second bearing roller, a petroleum barrel for will carrying stops, through the telescopic roller that sets up, and with the mode of pull formula, pull out in the follow second bearing roller, make conveying platform's area increase, and be used for making the petroleum barrel who remains the oil remove here, rotation through the cleaning piece, at first block adjacent last petroleum barrel, and continue to rotate and promote next petroleum barrel who remains the oil and be close to the L template, make the L template remove the petroleum barrel who remains the oil, and remove to the telescopic roller on, can not influence the transport of last petroleum barrel.

Description

Conveying device and method based on petroleum products

Technical Field

The invention relates to the technical field of petroleum products, in particular to a conveying device and a conveying method based on petroleum products.

Background

Petroleum, one of the main objects of geological exploration, is a viscous, dark brown liquid called industrial blood, the main component of petroleum is a mixture of various alkanes, cycloalkanes and aromatics, and petroleum is mainly used as fuel oil and gasoline, and is also a raw material of many chemical industry products, such as solution, fertilizer, pesticide and plastics.

In order to facilitate the transportation of petroleum products, the sub-packaging operation is generally performed, and tons of petroleum are sub-packaged into a plurality of petroleum barrels, wherein after the sub-packaging operation is completed, the plurality of petroleum barrels need to be conveyed in a centralized manner by virtue of a conveyor.

However, when carrying, the oil that spatters in partial barrel mouth department on the petroleum barrel can appear in partial shipment or transport, when the oil area that spatters in barrel mouth department is great, because the volume of petroleum barrel is great, operating personnel can't get off the petroleum barrel transport from the conveyer, need carry out the shut down operation through operating personnel this moment, makes the transport stop, clears up the oil that spatters. However, this operation delays a certain conveying time and affects the normal operation of the conveying.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a conveying device and a conveying method for petroleum products.

In order to realize the purpose, the invention provides the following technical scheme:

a petroleum-based product delivery device comprising: a conveying platform; the first carrier roller and the second carrier roller are rotatably connected to the conveying platform and are used for conveying the petroleum barrel; the U-shaped opening is formed in the conveying platform; the pulling mechanism is arranged on the second carrier roller and used for stopping the conveyed petroleum barrel; the pulling mechanism comprises a telescopic roller, the telescopic roller is connected in the second carrier roller in a sliding manner, one end of the telescopic roller penetrates through the U-shaped opening and extends to the outside of the U-shaped opening, one end of the telescopic roller extending to the outside of the U-shaped opening is fixedly connected with a pulling plate, and the pulling plate is matched with the U-shaped opening; the driving assembly is arranged on the conveying platform; the driving assembly comprises a motor, the motor is arranged on the conveying platform, a connecting block is fixed on the conveying platform, an electric telescopic rod is rotatably connected onto the connecting block, an output shaft of the motor penetrates through the connecting block and extends to the top of the connecting block, and one end of the output shaft of the motor, which extends to the top of the connecting block, is fixed on the electric telescopic rod; the cleaning mechanism is arranged on the electric telescopic rod and is used for cleaning residual petroleum on the petroleum barrel; the cleaning mechanism comprises a blocking support, the blocking support is arranged on the electric telescopic rod, a U-shaped groove is formed in the blocking support, a rotating shaft is rotatably connected between two sides of the inner part of the U-shaped groove, and a cleaning piece is arranged on the outer surface of the rotating shaft; the magnet piece is arranged on the cleaning piece; the detection assembly is arranged on the conveying platform and is used for detecting petroleum in the petroleum barrel.

Preferably, the one end of pivot is run through U type groove and extend to the outside in U type groove, the pivot extends to the outside pot head in U type groove is equipped with the torsional spring, the one end of torsional spring set up in block on the support.

Preferably, fixedly connected with gear on the motor output shaft, conveying platform's bottom sliding connection has the spur rack, and the outer surface of spur rack and the outer surface of gear break, the sliding tray has been seted up on the conveying platform, be provided with the L template that is used for going forward to the oil barrel filling on the spur rack, the L template runs through the sliding tray extends to the bottom of sliding tray, the L template extends to one side of sliding tray bottom is fixed in on the spur rack.

Preferably, one side of the interior of the cleaning piece is provided with a buffer spring, and one end of the buffer spring is arranged on the magnet sheet.

Preferably, one side of conveying platform is provided with the support frame, be provided with the oil storage tank on the support frame.

Preferably, the other side of support frame is provided with the filling head, the filling head is through connecting pipe and last intercommunication of oil holding vessel.

Preferably, the detection assembly comprises a camera and a controller, and the camera is used for shooting the height of the liquid level in the petroleum barrel.

Preferably, the gear is fitted with the spur gear plate.

Preferably, the conveying platform is fixedly connected with two supporting legs, the two supporting legs are provided with bases, and the bases are arranged in a contact manner in parallel with the ground, so that the conveying platform is in an inclined state, and the petroleum barrel slides on the conveying platform.

The conveying method based on the petroleum product is applied to the conveying device based on the petroleum product, and comprises the following steps:

the method comprises the following steps: by starting the motor, the electric telescopic rod rotates on the connecting block, then the blocking support rotates to the conveying platform, the moving petroleum barrel is pushed rightwards, meanwhile, the previous petroleum barrel is prevented from continuously moving rightwards, the previous petroleum barrel is enabled to impact on the blocking support, and the cleaning piece is caused to generate downward rotating force;

step two: the impact blocks behind the support, makes the buffer spring in the cleaning member compress to cushion impact, later at gear revolve's in-process, through the meshing with between the spur rack, make the L template promote next petroleum bucket and remove, make the dragging plate and the separation of U type opening, follow that the telescopic roller slides out in the second bearing roller, and make the petroleum bucket stop on the telescopic roller, wait for the cleaning of cleaning member.

Compared with the prior art, the invention has the following beneficial effects:

through the arranged telescopic roller and in a pull-out mode, the oil drum is pulled out of the second carrier roller, so that the area of the conveying platform is increased, the oil drum with residual oil is used for moving the oil drum, firstly, the adjacent previous oil drum is stopped through the rotation of the cleaning piece, and the next oil drum with residual oil is continuously driven to be close to the L-shaped plate through the rotation of the cleaning piece, so that the L-shaped plate moves the oil drum with residual oil to the telescopic roller, and the conveying of the previous oil drum cannot be influenced;

and meanwhile, the electric telescopic rod is started to enable the cleaning piece and the petroleum barrel opening to be positioned on the same plane, so that the residual petroleum is cleaned, the trouble of stopping for cleaning is avoided, and continuous conveying can be realized.

Drawings

FIG. 1 is a schematic diagram of a petroleum-based product delivery apparatus of the present invention;

FIG. 2 is a schematic view of a back structure of a conveying platform in the conveying device for petroleum products according to the present invention;

FIG. 3 is a schematic view of a state where a pulling plate is separated from a U-shaped opening in a petroleum product based conveying device according to the present invention;

FIG. 4 is a schematic structural view of the transport platform shown in FIG. 3;

FIG. 5 is a schematic view of a cleaning element of a petroleum product-based delivery device according to the present invention;

FIG. 6 is a schematic view of the cleaning member of FIG. 5 after impact;

FIG. 7 is a cross-sectional schematic view of the cleaning member of FIG. 6;

fig. 8 is a schematic view of the blocking stent in use.

1. A conveying platform; 2. a first carrier roller; 3. a second carrier roller; 4. a U-shaped opening; 51. a telescopic roller; 52. pulling the movable plate; 61. a motor; 62. connecting blocks; 63. an electric telescopic rod; 71. a U-shaped groove; 72. a rotating shaft; 73. a cleaning member; 74. a blocking support; 8. a magnet piece; 9. a detection component; 10. a gear; 11. a spur plate; 12. a sliding groove; 13. an L-shaped plate; 14. a buffer spring; 15. a support frame; 16. a petroleum storage tank; 17. a filling head; 18. supporting legs; 19. a base.

Detailed Description

Referring to fig. 1-8, a petroleum-based product delivery apparatus includes,

a conveying platform 1;

the first carrier roller 2 and the second carrier roller 3 are rotatably connected to the conveying platform 1 and are used for conveying the petroleum barrel;

the U-shaped opening 4 is formed in the conveying platform 1;

the pulling mechanism is arranged on the second carrier roller 3 and used for stopping the conveyed petroleum barrel;

the pulling mechanism comprises an expansion roller 51, the expansion roller 51 is slidably connected in the second carrier roller 3, one end of the expansion roller 51 penetrates through the U-shaped opening 4 and extends to the outside of the U-shaped opening 4, one end of the expansion roller 51 extending to the outside of the U-shaped opening 4 is fixedly connected with a pulling plate 52, and the pulling plate 52 is matched with the U-shaped opening 4.

The driving assembly is arranged on the conveying platform 1;

the driving assembly comprises a motor 61, the motor 61 is arranged on the conveying platform 1, a connecting block 62 is arranged on the conveying platform 1 in a fixed and exercising mode, an electric telescopic rod 63 is connected to the connecting block 62 in a rotating mode, an output shaft of the motor 61 penetrates through the connecting block 62 and extends to the top of the connecting block 62, and an output shaft of the motor 61 extends to one end of the top of the connecting block 62 and is fixed to the electric telescopic rod 63.

The cleaning mechanism is arranged on the electric telescopic rod 63 and is used for cleaning residual petroleum on the petroleum barrel;

clean mechanism is including blockking support 74, block support 74 set up in on the electric telescopic handle 63, and block and seted up U type groove 71 on the support 74, it is connected with pivot 72 to rotate between the inside both sides in U type groove 71, the surface of pivot 72 is provided with cleaning piece 73.

A magnet piece 8, the magnet piece 8 being disposed on the cleaning member 73;

and the detection assembly 9 is arranged on the conveying platform 1 and is used for detecting petroleum in the petroleum barrel.

Referring to fig. 1-2 again, the number of the first support rollers 2 is twelve, and the first support rollers are linearly and uniformly distributed on the conveying platform 1 for the sliding conveyance of the oil drum, and it should be noted that the number of the first support rollers 2 may also be increased or decreased according to specific use requirements;

referring to fig. 1-2 again, the second carrier roller 3 is provided with a cavity therein for extending and retracting the retractable roller 51, wherein when petroleum is found to remain at the mouth of the petroleum barrel during transportation, the retractable roller 51 is pulled out from the second carrier roller 3 in a pulling manner, so that the area of the transportation platform 1 is increased, and the transportation platform is mainly used for placing the petroleum barrel to be cleaned or the petroleum barrel damaged during transportation;

referring again to fig. 1,U, the U-shaped opening 4 and the pulling plate 52 are located on the same horizontal line, and when the petroleum barrel is not required to be processed, the U-shaped opening 4 and the pulling plate 52 are overlapped;

referring again to fig. 3,U, the opening 4 and the pulling plate 52 are in the same horizontal line, and when the petroleum barrel needs to be processed, the opening 4 is separated from the pulling plate 52;

referring to fig. 1 and 8 again, the motor 61 is connected to an external power source and can rotate in a forward and reverse direction to reciprocate the L-shaped plate 13, so as to push the petroleum barrel filled with the petroleum into the telescopic roller 51, and the motor 61 drives the blocking bracket 74 to rotate when operating, wherein the previous oil barrel is blocked and the next oil barrel is pushed to move;

referring to fig. 5-7 again, in the present embodiment, the cleaning member 73 is preferably a sponge pad, and the buffer spring 14 is disposed in the sponge pad, when the petroleum barrel is impacted, since the surface of the petroleum barrel is smooth, when the cleaning member 73 is extruded, the cleaning member 73 rotates downward, so that the torsion spring 20 rotates, and the impact force generated during the impact is buffered, meanwhile, during the rotation, the magnetic attraction is performed between the magnet piece 8 and the U-shaped groove 71, so as to limit the cleaning member 73, at this time, the electric telescopic rod 63 is adjusted, so that the cleaning member 73 and the mouth of the petroleum barrel are located on the same horizontal plane, and the purpose of cleaning petroleum is achieved by the contact friction between the surface of the cleaning member 73, wherein the torsion of the torsion spring 20 does not cause the magnetic attraction separation between the magnet piece and the U-shaped groove.

One end of the rotating shaft 72 penetrates through the U-shaped groove 71 and extends to the outside of the U-shaped groove 71, one end of the rotating shaft 72, which extends to the outside of the U-shaped groove 71, is sleeved with a torsion spring 20, and one end of the torsion spring 20 is arranged on the blocking bracket 74;

referring to fig. 5-6 again, the right end of the torsion spring is fixed to the blocking bracket 74, and the left end is fixed to the rotating shaft 72, and is rotated after being impacted by the blocking bracket 74. The torsion spring 20 is then pulled to absorb the impact force of the impact.

Fixedly connected with gear 10 on the motor 61 output shaft, conveying platform 1's bottom sliding connection has spur rack 11, and spur rack 11's surface and gear 10's surface meshing, sliding tray 12 has been seted up on conveying platform 1, be provided with the L template 13 that is used for going forward to the oil barrel filling on the spur rack 11, L template 13 runs through sliding tray 12 extends to sliding tray 12's bottom, L template 13 extends to one side of sliding tray 12 bottom is fixed in on the spur rack 11.

A buffer spring 14 is arranged on one side of the interior of the cleaning piece 73, and one end of the buffer spring 14 is arranged on the magnet piece 8;

referring to fig. 7 again, the arrangement of the buffer spring 14 not only can buffer, but also can make the cleaning member 73 contact and attach to the barrel mouth all the time through the rebound of the buffer spring in the cleaning process of the cleaning member 73, thereby improving the effect of cleaning oil.

One side of conveying platform 1 is provided with support frame 15, be provided with oil holding vessel 16 on the support frame 15.

The opposite side of support frame 15 is provided with filling head 17, filling head 17 is through connecting pipe and 16 last intercommunications of oil holding vessel.

The detection assembly 9 comprises a camera and a controller, and the camera is used for shooting the height of the liquid level in the petroleum barrel;

a controller for controlling the motor 61 and the electric telescopic rod 63 to start, so that the blocking bracket 74 rotates to drive the cleaning piece 73 to clean the petroleum at the opening of the petroleum barrel, a preset petroleum barrel type-petroleum liquid level height information table is searched to obtain the liquid level height H of the petroleum in the petroleum barrel, the controller calculates the volume V = alpha SH of the petroleum in the petroleum barrel, S is the area value of the bottom of the petroleum barrel, H is the petroleum liquid level height value in the petroleum barrel, alpha is a scale factor, and alpha is larger than 0, and whether V is equal to a preset V is judged ₀ If yes, the signal is a product qualified signal; if not, the product is an unqualified product signal, at the moment, residual oil exists at the oil barrel opening, and then the controller controls the cleaning piece 73 to rotate and clean;

the camera transmits the picture information to the controller, the numerical value of the liquid level in the petroleum barrel is calculated through the controller, when the numerical value is smaller than a preset numerical value, the situation that the petroleum part is splashed out of the barrel opening and remains at the barrel opening in the conveying process is inferred, and therefore the liquid level in the barrel is reduced and is smaller than a standard value.

The gear 10 is matched with the straight tooth plate 11.

The petroleum barrel conveying device is characterized in that two supporting legs 18 are fixedly connected to the conveying platform 1, bases 19 are arranged on the two supporting legs 18, and the bases 19 are arranged in a contact manner in parallel to the ground, so that the conveying platform 1 is in an inclined state, and petroleum barrels slide on the conveying platform 1.

the method comprises the following steps: by starting the motor 61, the electric telescopic rod 63 rotates on the connecting block 62, then the blocking support 74 rotates to the conveying platform 1, the moving petroleum barrel is pushed rightwards, meanwhile, the previous petroleum barrel is prevented from moving rightwards continuously, the previous petroleum barrel is enabled to impact on the blocking support 74, and the cleaning piece 73 is caused to generate downward rotating force;

step two: after the impact on the blocking bracket 74, the buffer spring 14 in the cleaning member 73 is compressed, so that the impact force is buffered, then in the process of rotating the gear 10, the L-shaped plate 13 pushes the next petroleum barrel to move through the meshing with the straight toothed plate 11, so that the pulling plate 52 is separated from the U-shaped opening 4, then the telescopic roller 51 slides out of the second carrier roller 3, and the petroleum barrel stays on the telescopic roller, and the cleaning of the cleaning member 73 is waited.

The working principle is as follows:

the method comprises the following steps: firstly, an empty petroleum barrel is placed on a conveying platform 1, then the empty petroleum barrel slides on a first carrier roller 2 under the action of gravity until the empty petroleum barrel is conveyed to the position right below a filling head 17, and petroleum in an oil storage barrel is conveyed to the filling head 17 by opening a switch on a connecting pipe, flows into the petroleum barrel, is stored in the petroleum barrel and continues to move rightwards through the first carrier roller 2;

step two: when oil remains at the opening of the separately-packaged oil drum, the motor 61 is started, the gear 10 on the output shaft of the motor 61 is rotated to drive the electric telescopic rod 63 to rotate on the connecting block 62, then the blocking support 74 is rotated to the conveying platform 1, the moving oil drum is pushed rightwards (please refer to fig. 1 again), the previous oil drum is prevented from moving rightwards continuously, at the moment, the previous oil drum is impacted on the blocking support 74 (please refer to fig. 8 again) through inertia force, the cleaning piece 73 is rotated downwards, the torsion spring 20 is driven to rotate, and the impact force is buffered;

step three: meanwhile, after the oil drum collides with the blocking bracket 74, the buffer spring 14 in the cleaning piece 73 is compressed, so that the impact force is buffered, the surface of the previous oil drum is prevented from being deformed, then in the process of rotating the gear 10, the L-shaped plate 13 is pushed to slide in the sliding groove 12 through the meshing with the straight toothed plate 11, so that the next oil drum is pushed to move, the pulling plate 52 is separated from the U-shaped opening 4, then the telescopic roller 51 slides out of the second carrier roller 3, the conveying platform is increased in area in a pulling mode, and the oil drum with residual oil is pushed to stay on the telescopic roller 51;

step four: then, the electric telescopic rod 63 is started to enable the cleaning piece 73 to be positioned on the same horizontal plane with the petroleum bucket opening, and the cleaning piece 73 is enabled to contact the petroleum bucket opening by means of rotation of the blocking bracket 74, so that residual petroleum is cleaned.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A petroleum-based product conveying apparatus, comprising:

a conveying platform (1);

the first carrier roller (2) and the second carrier roller (3) are rotatably connected to the conveying platform (1) and are used for conveying the petroleum barrel;

the U-shaped opening (4) is arranged on the conveying platform (1);

the pulling mechanism is arranged on the second carrier roller (3);

the pulling mechanism comprises a telescopic roller (51), the telescopic roller (51) is connected in the second carrier roller (3) in a sliding mode, one end of the telescopic roller (51) penetrates through the U-shaped opening (4) and extends to the outside of the U-shaped opening (4), one end, extending to the outside of the U-shaped opening (4), of the telescopic roller (51) is fixedly connected with a pulling plate (52), and the pulling plate (52) is matched with the U-shaped opening (4);

the driving assembly is arranged on the conveying platform (1);

the driving assembly comprises a motor (61), the motor (61) is arranged on the conveying platform (1), a connecting block (62) is fixedly connected to the conveying platform (1), an electric telescopic rod (63) is rotatably connected to the connecting block (62), an output shaft of the motor (61) penetrates through the connecting block (62) and extends to the top of the connecting block (62), and one end, extending to the top of the connecting block (62), of the output shaft of the motor (61) is fixed to the electric telescopic rod (63);

the cleaning mechanism is arranged on the electric telescopic rod (63) and is used for cleaning residual petroleum on the petroleum barrel;

the cleaning mechanism comprises a blocking support (74), the blocking support (74) is fixedly arranged on the electric telescopic rod (63), a U-shaped groove (71) is formed in the blocking support (74), a rotating shaft (72) is rotatably connected between two sides of the interior of the U-shaped groove (71), and a cleaning piece (73) is arranged on the outer surface of the rotating shaft (72);

a magnet piece (8), the magnet piece (8) being fixed to the cleaning member (73);

the detection assembly (9) is arranged on the conveying platform (1), is used for detecting oil in the oil barrel and comprises a controller; a controller for controlling the motor (61) and the electric telescopic rod (63) to start, so that the blocking bracket (74) rotates to drive the cleaning piece (73) to clean the petroleum at the port of the petroleum barrel, a preset petroleum barrel type-petroleum liquid level height information table is searched to obtain the liquid level height H of the petroleum in the petroleum barrel, and the controller calculates the volume of the petroleum in the petroleum barrel

Wherein S is the area value of the bottom of the petroleum barrel, H is the height value of the petroleum liquid level in the petroleum barrel, and the value is greater than or equal to>

Is a scaling factor and->

Judging whether V is equal to a preset V ₀ Wherein, if yes, thenThe product is a qualified signal; if not, the product is an unqualified product signal, at the moment, residual oil exists at the oil barrel opening, and then the controller controls the cleaning piece (73) to rotate and clean; one end of the rotating shaft (72) penetrates through the U-shaped groove (71) and extends to the outside of the U-shaped groove (71), one end of the rotating shaft (72) extending to the outside of the U-shaped groove (71) is sleeved with a torsion spring (20), and one end of the torsion spring (20) is arranged on the blocking support (74); a gear (10) is fixedly connected to an output shaft of the motor (61), a straight tooth plate (11) is connected to the bottom of the conveying platform (1) in a sliding mode, the outer surface of the straight tooth plate (11) is meshed with the outer surface of the gear (10), a sliding groove (12) is formed in the conveying platform (1), an L-shaped plate (13) used for pushing the petroleum barrel is arranged on the straight tooth plate (11), the L-shaped plate (13) penetrates through the sliding groove (12) and extends to the bottom of the sliding groove (12), and one side, extending to the bottom of the sliding groove (12), of the L-shaped plate (13) is fixed to the straight tooth plate (11); one side inside the cleaning piece (73) is fixedly connected with a buffer spring (14), and one end of the buffer spring (14) is arranged on the magnet piece (8); a support frame (15) is arranged on one side of the conveying platform (1), and an oil storage tank (16) is arranged on the support frame (15); a filling head (17) is arranged on the other side of the support frame (15), and the filling head (17) is communicated with a petroleum storage tank (16) through a connecting pipe; the detection assembly (9) further comprises a camera, and the camera is used for shooting the height of the liquid level in the petroleum barrel; the gear (10) is matched with the straight-tooth plate (11); the oil tank conveying device is characterized in that two supporting legs (18) are fixedly connected to the conveying platform (1), bases (19) are arranged on the two supporting legs (18), the bases (19) are arranged in a contact mode in parallel to the ground, the conveying platform (1) is enabled to be in an inclined state, and an oil tank can slide on the conveying platform (1).

2. A method for conveying a petroleum-based product, which is applied to the conveying device for a petroleum-based product according to claim 1, wherein the method for conveying a petroleum-based product comprises the following steps:

the method comprises the following steps: by starting the motor (61), the electric telescopic rod (63) rotates on the connecting block (62), then the blocking support (74) rotates to the conveying platform (1), the moving petroleum barrel is pushed, meanwhile, the previous petroleum barrel is prevented from continuously moving, the previous petroleum barrel is enabled to impact on the blocking support (74), and the cleaning piece (73) is caused to generate downward rotating force;

step two: after the oil tank collides with the blocking support (74), the buffer spring (14) in the cleaning piece (73) is compressed, so that the impact force is buffered, then in the rotating process of the gear (10), the L-shaped plate (13) pushes the next oil tank to move through the meshing with the straight toothed plate (11), the pulling plate (52) is separated from the U-shaped opening (4), then the telescopic roller (51) slides out of the second carrier roller (3), the oil tank stays on the telescopic roller, and the cleaning of the cleaning piece (73) is waited.