CN108940434B

CN108940434B - Sanding device for paint processing

Info

Publication number: CN108940434B
Application number: CN201810728296.7A
Authority: CN
Inventors: 卿能
Original assignee: Wenzhou Aoding Building Materials Co Ltd
Current assignee: Heze Xinyi new energy Co., Ltd
Priority date: 2018-07-05
Filing date: 2018-07-05
Publication date: 2020-06-16
Anticipated expiration: 2038-07-05
Also published as: CN108940434A

Abstract

The invention belongs to the field of chemical engineering, and particularly relates to a sanding device for paint processing. The invention aims to provide a sanding device for paint processing, which can separate unqualified paint and perform secondary treatment. Provided is a sanding device for paint processing. The grinding component and the conveying component can be conveniently driven to operate through the driving component; the paint can be ground by the grinding part; unqualified paint can be conveyed into the second collecting frame through the conveying component to be collected so as to be ground again; the invention can strip off unqualified paint to carry out grinding treatment again, thereby achieving the effect of accelerating the grinding speed.

Description

Sanding device for paint processing

Technical Field

The invention belongs to the field of chemical engineering, and particularly relates to a sanding device for paint processing.

Background

In the course of working of paint, because the precision problem of raw materials, there are tiny granule often in the paint that the preparation was accomplished, if paint of this type can cause the unevenness of applying paint the surface with a brush with wall or furniture surface with a brush, make the surface unsmooth, cause the reflection of light face unevenness, not only influence the impression on surface, touch the burr sense moreover occasionally, influence product quality. Therefore, after the existing paint is prepared, a last grinding process is needed, and the paint is guided into a sand mill for further grinding, so that granular substances are removed, and the fineness of the paint is improved. The existing processing equipment generally uses simple grinding equipment, paint is poured into the grinding equipment and poured out after processing or discharged through a valve, the processing mode cannot continuously grind a large batch of paint, the next batch of paint can be ground only after unqualified paint in a batch of paint in a cylinder is completely ground, and the processing efficiency is greatly influenced; there is therefore a need to develop a sanding device for paint processing that is capable of separating out the defective paint for further processing.

Disclosure of Invention

The invention aims to overcome the defects that the existing processing equipment can not continuously carry out abrasive processing on a large batch of paint, the next batch of paint can be ground only by grinding all unqualified paint in a batch of paint in a cylinder, and the processing efficiency is greatly influenced.

The invention is achieved by the following specific technical means:

a sanding device for paint processing comprises a grinding box, a paint conveying frame, a driving part, a grinding part, a conveying part, a first paint conveying pipe, a paint inlet pipe, a paint storage frame, a water pump, a first collecting frame, a first mounting plate, a support rod, a second collecting frame, a second mounting plate, a valve and a paint outlet pipe; the paint storage frame is fixedly connected to the top of the first mounting plate, and the grinding box is fixedly connected to the top of the first mounting plate through a support rod; the paint conveying frame is embedded at the top of the grinding box and is communicated with the inside of the grinding box through a first through hole; the water pump is fixedly connected to the top of the first mounting plate and is positioned between the paint storage frame and the support rod; one end of the paint inlet pipe is fixedly connected with the water inlet end of the water pump, and the other end of the paint inlet pipe extends to the bottom in the paint storage frame; one end of the first paint conveying pipe is fixedly connected with the water outlet end of the water pump, and the other end of the first paint conveying pipe is fixedly connected with the top of the paint conveying frame; the paint outlet pipe is fixedly connected to the bottom of the grinding box and penetrates through the grinding box; the valve is arranged in the paint outlet pipe; the first collecting frame is placed at the top of the first mounting plate and is positioned below the paint outlet pipe; the driving part is fixedly connected to the rear part of the grinding box, the grinding part is fixedly connected into the grinding box and is in transmission connection with the driving part, the conveying part is fixedly connected into the grinding box and is in transmission connection with the driving part, the second mounting plate is fixedly connected to the side part of the paint storage box along the horizontal direction, and the second collecting frame is placed at the top of the second mounting plate;

the driving part comprises a motor, a third mounting plate, a first bearing seat, a fixing plate, a first belt pulley, a first gear, a second bearing seat and a first rotating shaft; the third mounting plate is fixedly connected to the rear part of the grinding box, the second bearing seat is embedded in the rear part of the grinding box, the fixed plate is fixedly connected to the top of the third mounting plate, the first bearing seat is fixedly connected to the top of the fixed plate, and the motor is fixedly connected to the top of the third mounting plate; one end of the first rotating shaft is pivoted with the first bearing seat and penetrates through the first bearing seat to be in transmission connection with the output end of the motor, and the other end of the first rotating shaft is pivoted with the second bearing seat and penetrates through the second bearing seat to be in transmission connection with the grinding part; the first belt pulley is fixedly connected to the first rotating shaft and is positioned between the first bearing block and the second bearing block; the first gear is fixedly connected to the first rotating shaft and is positioned between the first belt pulley and the second bearing seat; the first belt pulley is in transmission connection with the conveying part, and the first gear is in transmission connection with the grinding part;

the grinding component comprises a second rotating shaft, a third bearing seat, a first L-shaped plate, a second gear, a fourth bearing seat, a first grinding cylinder, a fifth bearing seat, a third rotating shaft, a fourth rotating shaft, a sixth bearing seat and a second grinding cylinder; the first rotating shaft is pivoted with the second bearing seat and penetrates through the second bearing seat to be fixedly connected with the second grinding cylinder, and the sixth bearing seat is embedded in the front part in the grinding box; one end of the fourth rotating shaft is pivoted with the sixth bearing seat, and the other end of the fourth rotating shaft is fixedly connected with the second grinding cylinder; the first L-shaped plate is fixedly connected to the rear part of the grinding box, the third bearing seat is fixedly connected to the end part of the first L-shaped plate, and the fourth bearing seat is embedded in the rear part of the grinding box; one end of the second rotating shaft is pivoted with the third bearing seat, and the other end of the second rotating shaft is pivoted with the fourth bearing seat and penetrates through the fourth bearing seat to be fixedly connected with the first grinding cylinder; the fifth bearing seat is embedded in the front part in the grinding box; one end of the third rotating shaft is pivoted with the fifth bearing seat, and the other end of the third rotating shaft is fixedly connected with the first grinding cylinder; the second gear is fixedly connected to the second rotating shaft and is positioned between the third bearing seat and the fourth bearing seat; the first gear is meshed with the second gear;

the conveying part comprises a second belt pulley, a first flat belt, a fifth rotating shaft, a third belt pulley, a seventh bearing seat, a first bevel gear, a second bevel gear, a fourth belt pulley, an eighth bearing seat, a sixth rotating shaft, a second flat belt, a second L-shaped plate, a first arc-shaped plate, a ninth bearing seat, a tenth bearing seat, a screen, a conveying rod, a conveying pipe, a connecting plate and an eleventh bearing seat; the second L-shaped plate is fixedly connected to the rear part of the grinding box, the eighth bearing seat is fixedly connected to the end part of the second L-shaped plate, and the ninth bearing seat is embedded in the rear part of the grinding box; one end of the sixth rotating shaft is pivoted with the eighth bearing seat, and the other end of the sixth rotating shaft is pivoted with the ninth bearing seat; the fourth belt pulley is fixedly connected to the sixth rotating shaft, the second bevel gear is fixedly connected to the sixth rotating shaft, the fourth belt pulley is in transmission connection with the first belt pulley through a second flat belt, and the seventh bearing seat is fixedly connected to the rear part of the grinding box; one end of the fifth rotating shaft is fixedly connected with the third belt pulley, and the other end of the fifth rotating shaft is pivoted with the seventh bearing seat and penetrates through the seventh bearing seat to be fixedly connected with the first bevel gear; the first bevel gear is meshed with the second bevel gear, and a second through hole is formed in the side part of the grinding box; the conveying pipe is fixedly connected to the side part of the grinding box and is communicated with the inside of the grinding box through a second through hole; the connecting plate is fixedly connected to the inner side wall of the conveying pipe, the eleventh bearing seat is fixedly connected to the end part of the connecting plate, the tenth bearing seat is embedded in the inner side wall, far away from the second through hole, of the grinding box, one end of the conveying rod is pivoted with the tenth bearing seat and penetrates through the tenth bearing seat to be fixedly connected with the second belt pulley, and the other end of the conveying rod is pivoted with the eleventh bearing seat; the second belt pulley is in transmission connection with the third belt pulley through a first flat belt, the arc-shaped plate is embedded in the inner side wall of the grinding box, and the screen is embedded at the bottom of the arc-shaped plate and is positioned below the conveying rod;

the second paint conveying pipe is also included; one end of the second paint conveying pipe is communicated with the paint storage frame, and the other end of the second paint conveying pipe penetrates through the second mounting plate and is communicated with the bottom in the second collecting frame.

Furthermore, the sanding device for paint processing also comprises a handle and a baffle plate; the handle is fixedly connected to the side part of the first collecting frame; the baffle is fixedly connected to the top of the first mounting plate along the vertical direction, and the first mounting plate abuts against the first collecting frame.

Furthermore, the sanding device for paint processing also comprises a shielding plate and a cover plate; the cover plate is hinged to the top of the paint storage frame; the shielding plate is fixedly connected to the side part of the grinding box and is positioned above the conveying pipe.

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

the grinding component and the conveying component can be conveniently driven to operate through the driving component; the paint can be ground by the grinding part; unqualified paint can be conveyed into the second collecting frame through the conveying component to be collected so as to be ground again; the invention can strip off unqualified paint to carry out grinding treatment again, thereby achieving the effect of accelerating the grinding speed.

Drawings

Fig. 1 is a first front view structure diagram of the present invention.

Fig. 2 is a first right-view structural diagram of the present invention.

Fig. 3 is a left side view structural diagram of the present invention.

Fig. 4 is a schematic top view of the present invention.

Fig. 5 is a schematic top view of the driving member of the present invention.

FIG. 6 is a schematic top view of an abrasive article according to the present invention.

Fig. 7 is a schematic top view of the conveying member of the present invention.

Fig. 8 is a second front view structure diagram of the present invention.

Fig. 9 is a third schematic view of the present invention.

Fig. 10 is a second right-view structural diagram of the present invention.

Fig. 11 is a schematic diagram of a fourth front view structure according to the present invention.

The labels in the figures are: 1-grinding box, 2-paint conveying frame, 3-first through hole, 4-driving part, 41-motor, 42-third mounting plate, 43-first bearing seat, 44-fixing plate, 45-first belt pulley, 46-first gear, 47-second bearing seat, 48-first rotating shaft, 5-grinding part, 51-second rotating shaft, 52-third bearing seat, 53-first L-shaped plate, 54-second gear, 55-fourth bearing seat, 56-first grinding cylinder, 57-fifth bearing seat, 58-third rotating shaft, 59-fourth rotating shaft, 510-sixth bearing seat, 511-second grinding cylinder, 6-conveying part, 61-second belt pulley, 62-first flat belt, 63-fifth rotating shaft, 64-a third belt pulley, 65-a seventh bearing seat, 66-a first bevel gear, 67-a second bevel gear, 68-a fourth belt pulley, 69-an eighth bearing seat, 610-a sixth rotating shaft, 611-a second flat belt, 612-a second L-shaped plate, 613-an arc-shaped plate, 614-a ninth bearing seat, 615-a tenth bearing seat, 616-a screen, 617-a conveying rod, 618-a second through hole, 619-a conveying pipe, 620-a connecting plate, 621-an eleventh bearing seat, 7-a first paint conveying pipe, 8-a paint inlet pipe, 9-a paint storage frame, 10-a water pump, 11-a first collection frame, 12-a first mounting plate, 13-a supporting rod, 14-a second collection frame, 15-a second mounting plate, 16-a valve and 17-a paint outlet pipe, 18-a second paint conveying pipe, 19-a handle, 20-a baffle, 21-a shielding plate and 22-a cover plate.

Detailed Description

The invention is further described below with reference to the figures and examples.

Examples

A sanding device for paint processing is shown in figures 1-11 and comprises a grinding box 1, a paint conveying frame 2, a driving part 4, a grinding part 5, a conveying part 6, a first paint conveying pipe 7, a paint inlet pipe 8, a paint storage frame 9, a water pump 10, a first collection frame 11, a first mounting plate 12, a support rod 13, a second collection frame 14, a second mounting plate 15, a valve 16 and a paint outlet pipe 17; the paint storage frame 9 is fixedly connected to the top of the first mounting plate 12, and the grinding box 1 is fixedly connected to the top of the first mounting plate 12 through a support rod 13; the paint conveying frame 2 is embedded in the top of the grinding box 1 and is communicated with the inside of the grinding box 1 through a first through hole 3; the water pump 10 is fixedly connected to the top of the first mounting plate 12 and is positioned between the paint storage frame 9 and the support rod 13; one end of the paint inlet pipe 8 is fixedly connected with the water inlet end of the water pump 10, and the other end extends to the bottom in the paint storage frame 9; one end of the first paint conveying pipe 7 is fixedly connected with the water outlet end of the water pump 10, and the other end of the first paint conveying pipe is fixedly connected with the top of the paint conveying frame 2; the paint outlet pipe 17 is fixedly connected to the bottom of the grinding box 1 and penetrates through the grinding box 1; the valve 16 is arranged in the paint outlet pipe 17; the first collecting frame 11 is placed on the top of the first mounting plate 12 and is positioned below the paint outlet pipe 17; the driving part 4 is fixedly connected to the rear part of the grinding box 1, the grinding part 5 is fixedly connected to the grinding box 1 and is in transmission connection with the driving part 4, the conveying part 6 is fixedly connected to the grinding box 1 and is in transmission connection with the driving part 4, the second mounting plate 15 is fixedly connected to the side part of the paint storage box along the horizontal direction, and the second collecting frame 14 is placed on the top of the second mounting plate 15.

Adding paint to be ground into a paint storage frame 9, then controlling a driving part 4 to operate, driving the grinding part 5 and a conveying part 6 to operate by operating the driving part 4, then driving a water pump 10 to operate, operating the water pump 10 to convey the paint into a paint conveying frame 2 through a paint inlet pipe 8 and a first paint conveying pipe 7, then flowing onto the grinding part 5 through a first through hole 3 on the paint conveying frame 2 to grind, dropping the ground paint onto the conveying part 6, allowing the qualified paint to flow into the bottom of a grinding box 1, conveying the unqualified paint into a second collecting frame 14 by the conveying part 6 to be collected so as to be ground again, opening a valve 16, and allowing the qualified paint stored in the grinding box 1 to flow into the first collecting frame 11 from a paint outlet pipe 17 so as to be collected and packaged.

As shown in fig. 5, the driving part 4 includes a motor 41, a third mounting plate 42, a first bearing seat 43, a fixing plate 44, a first belt pulley 45, a first gear 46, a second bearing seat 47, and a first rotating shaft 48; the third mounting plate 42 is fixedly connected to the rear part of the grinding box 1, the second bearing seat 47 is embedded in the rear part of the grinding box 1, the fixing plate 44 is fixedly connected to the top of the third mounting plate 42, the first bearing seat 43 is fixedly connected to the top of the fixing plate 44, and the motor 41 is fixedly connected to the top of the third mounting plate 42; one end of the first rotating shaft 48 is pivoted with the first bearing seat 43 and penetrates through the first bearing seat 43 to be in transmission connection with the output end of the motor 41, and the other end of the first rotating shaft is pivoted with the second bearing seat 47 and penetrates through the second bearing seat 47 to be in transmission connection with the grinding part 5; the first belt pulley 45 is fixedly connected to the first rotating shaft 48 and located between the first bearing seat 43 and the second bearing seat 47; the first gear 46 is fixedly connected to the first rotating shaft 48 and located between the first belt pulley 45 and the second bearing block 47; the first pulley 45 is in driving connection with the conveying member 6 and the first gear 46 is in driving connection with the grinding member 5.

The operation of driving motor 41, motor 41 operate and drive first pivot 48 and rotate, and first pivot 48 rotates and drives first belt pulley 45, first gear 46 and rotate, and then drives grinding part 5 and conveying part 6 operation, so just can drive grinding part 5 and conveying part 6 operation simultaneously through motor 41 to reach the effect of energy saving.

As shown in fig. 6, the grinding component 5 includes a second rotating shaft 51, a third bearing seat 52, a first L-shaped plate 53, a second gear 54, a fourth bearing seat 55, a first grinding cylinder 56, a fifth bearing seat 57, a third rotating shaft 58, a fourth rotating shaft 59, a sixth bearing seat 510, and a second grinding cylinder 511; the first rotating shaft 48 is pivoted with the second bearing seat 47 and penetrates through the second bearing seat 47 to be fixedly connected with the second grinding cylinder 511, and the sixth bearing seat 510 is embedded in the front part in the grinding box 1; one end of the fourth rotating shaft 59 is pivotally connected to the sixth bearing seat 510, and the other end is fixedly connected to the second grinding cylinder 511; the first L-shaped plate 53 is fixedly connected to the rear part of the grinding box 1, the third bearing seat 52 is fixedly connected to the end part of the first L-shaped plate 53, and the fourth bearing seat 55 is embedded in the rear part of the grinding box 1; one end of the second rotating shaft 51 is pivotally connected to the third bearing seat 52, and the other end is pivotally connected to the fourth bearing seat 55 and passes through the fourth bearing seat 55 to be fixedly connected to the first grinding cylinder 56; the fifth bearing seat 57 is embedded in the front part in the grinding box 1; one end of the third rotating shaft 58 is pivoted with the fifth bearing seat 57, and the other end is fixedly connected with the first grinding cylinder 56; the second gear 54 is fixedly connected to the second rotating shaft 51 and located between the third bearing seat 52 and the fourth bearing seat 55; the first gear 46 meshes with the second gear 54.

The first rotating shaft 48 rotates to drive the second grinding cylinder 511 to rotate on the one hand, and drives the second rotating shaft 51 to rotate reversely through the first gear 46 and the second gear 54 on the other hand, so as to drive the first grinding cylinder 56 to rotate reversely, so that the paint is ground through mutual grinding and friction between the first grinding cylinder 56 and the second grinding cylinder 511, and the paint with large particles can be ground into fine paint.

As shown in fig. 7, the conveying member 6 includes a second pulley 61, a first flat belt 62, a fifth rotating shaft 63, a third pulley 64, a seventh bearing seat 65, a first bevel gear 66, a second bevel gear 67, a fourth pulley 68, an eighth bearing seat 69, a sixth rotating shaft 610, a second flat belt 611, a second L-shaped plate 612, a first arc-shaped plate 613, a ninth bearing seat 614, a tenth bearing seat 615, a screen 616, a conveying rod 617, a conveying pipe 619, a connecting plate 620 and an eleventh bearing seat 621; the second L-shaped plate 612 is fixedly connected to the rear part of the grinding box 1, the eighth bearing seat 69 is fixedly connected to the end part of the second L-shaped plate 612, and the ninth bearing seat 614 is embedded in the rear part of the grinding box 1; one end of the sixth rotating shaft 610 is pivotally connected to the eighth bearing seat 69, and the other end is pivotally connected to the ninth bearing seat 614; the fourth belt pulley 68 is fixedly connected to the sixth rotating shaft 610, the second bevel gear 67 is fixedly connected to the sixth rotating shaft 610, the fourth belt pulley 68 is in transmission connection with the first belt pulley 45 through a second flat belt 611, and the seventh bearing seat 65 is fixedly connected to the rear part of the grinding box 1; one end of the fifth rotating shaft 63 is fixedly connected with the third belt pulley 64, and the other end of the fifth rotating shaft is pivoted with the seventh bearing seat 65 and penetrates through the seventh bearing seat 65 to be fixedly connected with the first bevel gear 66; the first bevel gear 66 is meshed with the second bevel gear 67, and a second through hole 618 is formed in the side part of the grinding box 1; the delivery pipe 619 is fixedly connected to the side of the grinding box 1 and is communicated with the inside of the grinding box 1 through a second through hole 618; the connecting plate 620 is fixedly connected to the inner side wall of the conveying pipe 619, the eleventh bearing seat 621 is fixedly connected to the end of the connecting plate 620, the tenth bearing seat 615 is embedded in the inner side wall of the grinding box 1 far away from the second through hole 618, one end of the conveying rod 617 is pivotally connected with the tenth bearing seat 615 and penetrates through the tenth bearing seat 615 to be fixedly connected with the second belt pulley 61, and the other end of the conveying rod 617 is pivotally connected with the eleventh bearing seat 621; the second pulley 61 is connected with the third pulley 64 through the first flat belt 62, the arc plate 613 is embedded in the inner side wall of the grinding box 1, and the screen 616 is embedded in the bottom of the arc plate 613 and is located below the conveying rod 617.

The ground paint flows onto the curved plate 613 and from the curved plate 613 to the screen 616, the acceptable paint flows through the screen 616 to the bottom of the grinding chamber 1 and the unacceptable paint is retained on the screen 616.

The first belt pulley 45 rotates to drive the fourth belt pulley 68 to rotate through the transmission action of the second flat belt 611, and further drives the sixth rotating shaft 610 and the second bevel gear 67 on the sixth rotating shaft 610 to rotate, because the second bevel gear 67 is meshed with the first bevel gear 66, the second bevel gear 67 rotates to drive the first bevel gear 66 to rotate, and further drives the fifth rotating shaft 63 and the third belt pulley 64 on the fifth rotating shaft 63 to rotate, under the transmission action of the first flat belt 62, the third belt pulley 64 rotates to drive the second belt pulley 61 to rotate, and further drives the conveying rod 617 to rotate to convey unqualified paint on the screen 616 to the second collecting frame 14, so that the grinding is performed again.

As shown in fig. 8, the sanding device for paint processing further comprises a second paint conveying pipe 18; one end of the second paint conveying pipe 18 is communicated with the interior of the paint storage frame 9, and the other end of the second paint conveying pipe penetrates through the second mounting plate 15 and is communicated with the bottom of the interior of the second collection frame 14.

The collected paint which is not qualified can be directly added into the paint storage frame 9 through the second paint conveying pipe 18 for carrying out the grinding treatment again.

As shown in fig. 9 and 10, the sanding device for paint processing further comprises a handle 19 and a baffle 20; the handle 19 is fixedly connected with the side part of the first collecting frame 11; the baffle 20 is fixed on top of the first mounting plate 12 in the vertical direction, and the first mounting plate 12 abuts against the first collecting frame 11.

The first collecting frame 11 can be conveniently taken and placed by the handle 19, and the first collecting frame 11 can be quickly placed at an accurate position by the baffle 20.

As shown in fig. 11, the sanding device for paint processing further includes a cover plate 21 and a cover plate 22; the cover plate 22 is hinged on the top of the paint storage frame 9; the shutter 21 is fixed to the side of the grinding box 1 and is located above the delivery pipe 619.

The cover plate 22 can prevent other substances from falling into the paint storage frame 9 to block the paint inlet pipe 8, and the shielding plate 21 can prevent other substances from falling into the second collecting frame 14 to block the opening of the second paint conveying pipe 18.

The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A sanding device for paint processing is characterized by comprising a grinding box (1), a paint conveying frame (2), a driving part (4), a grinding part (5), a conveying part (6), a first paint conveying pipe (7), a paint inlet pipe (8), a paint storage frame (9), a water pump (10), a first collecting frame (11), a first mounting plate (12), a support rod (13), a second collecting frame (14), a second mounting plate (15), a valve (16) and a paint outlet pipe (17); the paint storage frame (9) is fixedly connected to the top of the first mounting plate (12), and the grinding box (1) is fixedly connected to the top of the first mounting plate (12) through a support rod (13); the paint conveying frame (2) is embedded in the top of the grinding box (1) and is communicated with the inside of the grinding box (1) through a first through hole (3); the water pump (10) is fixedly connected to the top of the first mounting plate (12) and is positioned between the paint storage frame (9) and the support rod (13); one end of the paint inlet pipe (8) is fixedly connected with the water inlet end of the water pump (10), and the other end of the paint inlet pipe extends to the bottom in the paint storage frame (9); one end of the first paint conveying pipe (7) is fixedly connected with the water outlet end of the water pump (10), and the other end of the first paint conveying pipe is fixedly connected with the top of the paint conveying frame (2); the paint outlet pipe (17) is fixedly connected to the bottom of the grinding box (1) and penetrates through the grinding box (1); the valve (16) is arranged in the paint outlet pipe (17); the first collecting frame (11) is placed at the top of the first mounting plate (12) and is positioned below the paint outlet pipe (17); the driving part (4) is fixedly connected to the rear part of the grinding box (1), the grinding part (5) is fixedly connected into the grinding box (1) and is in transmission connection with the driving part (4), the conveying part (6) is fixedly connected into the grinding box (1) and is in transmission connection with the driving part (4), the second mounting plate (15) is fixedly connected to the side part of the paint storage box along the horizontal direction, and the second collecting frame (14) is placed at the top of the second mounting plate (15);

the driving part (4) comprises a motor (41), a third mounting plate (42), a first bearing seat (43), a fixing plate (44), a first belt pulley (45), a first gear (46), a second bearing seat (47) and a first rotating shaft (48); the third mounting plate (42) is fixedly connected to the rear part of the grinding box (1), the second bearing seat (47) is embedded in the rear part of the grinding box (1), the fixing plate (44) is fixedly connected to the top part of the third mounting plate (42), the first bearing seat (43) is fixedly connected to the top part of the fixing plate (44), and the motor (41) is fixedly connected to the top part of the third mounting plate (42); one end of the first rotating shaft (48) is pivoted with the first bearing seat (43) and penetrates through the first bearing seat (43) to be in transmission connection with the output end of the motor (41), and the other end of the first rotating shaft is pivoted with the second bearing seat (47) and penetrates through the second bearing seat (47) to be in transmission connection with the grinding part (5); the first belt pulley (45) is fixedly connected to the first rotating shaft (48) and is positioned between the first bearing block (43) and the second bearing block (47); the first gear (46) is fixedly connected to the first rotating shaft (48) and is positioned between the first belt pulley (45) and the second bearing seat (47); the first belt pulley (45) is in transmission connection with the conveying part (6), and the first gear (46) is in transmission connection with the grinding part (5);

the grinding component (5) comprises a second rotating shaft (51), a third bearing seat (52), a first L-shaped plate (53), a second gear (54), a fourth bearing seat (55), a first grinding cylinder (56), a fifth bearing seat (57), a third rotating shaft (58), a fourth rotating shaft (59), a sixth bearing seat (510) and a second grinding cylinder (511); the first rotating shaft (48) is pivoted with the second bearing seat (47) and penetrates through the second bearing seat (47) to be fixedly connected with the second grinding cylinder (511), and the sixth bearing seat (510) is embedded in the front part in the grinding box (1); one end of the fourth rotating shaft (59) is pivoted with the sixth bearing seat (510), and the other end of the fourth rotating shaft is fixedly connected with the second grinding cylinder (511); the first L-shaped plate (53) is fixedly connected to the rear part of the grinding box (1), the third bearing seat (52) is fixedly connected to the end part of the first L-shaped plate (53), and the fourth bearing seat (55) is embedded in the rear part of the grinding box (1); one end of the second rotating shaft (51) is pivoted with the third bearing seat (52), and the other end of the second rotating shaft is pivoted with the fourth bearing seat (55) and penetrates through the fourth bearing seat (55) to be fixedly connected with the first grinding cylinder (56); the fifth bearing seat (57) is embedded in the front part in the grinding box (1); one end of the third rotating shaft (58) is pivoted with the fifth bearing seat (57), and the other end of the third rotating shaft is fixedly connected with the first grinding cylinder (56); the second gear (54) is fixedly connected to the second rotating shaft (51) and is positioned between the third bearing seat (52) and the fourth bearing seat (55); the first gear (46) is meshed with the second gear (54);

the conveying part (6) comprises a second belt pulley (61), a first flat belt (62), a fifth rotating shaft (63), a third belt pulley (64), a seventh bearing seat (65), a first bevel gear (66), a second bevel gear (67), a fourth belt pulley (68), an eighth bearing seat (69), a sixth rotating shaft (610), a second flat belt (611), a second L-shaped plate (612), a first arc-shaped plate (613), a ninth bearing seat (614), a tenth bearing seat (615), a screen (616), a conveying rod (617), a conveying pipe (619), a connecting plate (620) and an eleventh bearing seat (621); the second L-shaped plate (612) is fixedly connected to the rear part of the grinding box (1), the eighth bearing seat (69) is fixedly connected to the end part of the second L-shaped plate (612), and the ninth bearing seat (614) is embedded in the rear part of the grinding box (1); one end of the sixth rotating shaft (610) is pivoted with the eighth bearing seat (69), and the other end of the sixth rotating shaft is pivoted with the ninth bearing seat (614); the fourth belt pulley (68) is fixedly connected with the sixth rotating shaft (610), the second bevel gear (67) is fixedly connected with the sixth rotating shaft (610), the fourth belt pulley (68) is in transmission connection with the first belt pulley (45) through a second flat belt (611), and the seventh bearing seat (65) is fixedly connected with the rear part of the grinding box (1); one end of a fifth rotating shaft (63) is fixedly connected with the third belt pulley (64), and the other end of the fifth rotating shaft is pivoted with the seventh bearing seat (65) and penetrates through the seventh bearing seat (65) to be fixedly connected with the first bevel gear (66); the first bevel gear (66) is meshed with the second bevel gear (67), and a second through hole (618) is formed in the side part of the grinding box (1); the conveying pipe (619) is fixedly connected to the side part of the grinding box (1) and is communicated with the inside of the grinding box (1) through a second through hole (618); the connecting plate (620) is fixedly connected to the inner side wall of the conveying pipe (619), the eleventh bearing seat (621) is fixedly connected to the end portion of the connecting plate (620), the tenth bearing seat (615) is embedded in the inner side wall, far away from the second through hole (618), of the grinding box (1), one end of the conveying rod (617) is pivoted with the tenth bearing seat (615) and penetrates through the tenth bearing seat (615) to be fixedly connected with the second belt pulley (61), and the other end of the conveying rod is pivoted with the eleventh bearing seat (621); the second belt pulley (61) is in transmission connection with the third belt pulley (64) through a first flat belt (62), the arc-shaped plate (613) is embedded in the inner side wall of the grinding box (1), and the screen (616) is embedded at the bottom of the arc-shaped plate (613) and is positioned below the conveying rod (617);

also comprises a second paint conveying pipe (18); one end of the second paint conveying pipe (18) is communicated with the interior of the paint storage frame (9), and the other end of the second paint conveying pipe penetrates through the second mounting plate (15) and is communicated with the bottom of the interior of the second collection frame (14).

2. The sanding device for paint working according to claim 1, characterised in that it further comprises a handle (19) and a flap (20); the handle (19) is fixedly connected with the side part of the first collecting frame (11); the baffle (20) is fixedly connected to the top of the first mounting plate (12) along the vertical direction, and the first mounting plate (12) abuts against the first collecting frame (11).

3. The sanding device for paint working according to claim 2, characterized in that it further comprises a cover plate (22) and a cover plate (21); the cover plate (22) is hinged to the top of the paint storage frame (9); the shielding plate (21) is fixedly connected to the side part of the grinding box (1) and is positioned above the conveying pipe (619).