CN213222951U - Paint spraying device for powder feeding box - Google Patents

Abstract

The utility model provides a send whitewashed paint spraying apparatus for case, relate to paint spraying apparatus technical field, including the box that sprays paint, the preceding terminal surface of the box that sprays paint is the opening form, the rear end face outside of the box that sprays paint is provided with the paint bucket of taking the paint spraying pump, be provided with the paint spraying pipe on the paint bucket of taking the paint spraying pump, top in the box that sprays paint sets up the paint sprayer, the one end and the paint bucket of taking the paint spraying pump of paint spraying pipe are connected, the other end and the paint sprayer of paint spraying pipe are connected, all be provided with dust collector on the inner wall of the both ends face about the box that sprays paint, dust collector includes the shell body, the shell body is fixed respectively on the inner wall of setting both ends face about the box that sprays paint, the shell body is cavity rectangle tubular structure, a lateral wall of shell body is the opening form, and the opening lateral wall. The utility model has the advantages of can spray paint the operation automatically, avoid the human body contact, and improve the quality after spraying paint.

Description

Paint spraying device for powder feeding box

Technical Field

The utility model relates to a paint spraying apparatus technical field, concretely relates to send whitewashed case to use paint spraying apparatus.

Background

The powder feeding box can play a role in guiding and conveying materials before cement powder selection, so that cement powder raw materials can better enter a cement powder selecting machine for powder selection operation, the powder feeding box needs to perform paint spraying treatment on the surface after welding is completed, and paint spraying is a necessary process step so as to form a paint film on the surface of the powder feeding box and play roles in protection, marking and other purposes.

At present, manual paint spraying is mostly adopted for operation, because the paint contains more substances harmful to human bodies, people can generate great damage to human bodies after contacting the paint for a long time, and when workers spray paint by using spray guns, the uniformity of the paint sprayed on the surface of the powder feeding box is different due to different personal experiences, the quality of the paint sprayed completely depends on the operation of the workers, and meanwhile, the efficiency of manual paint spraying is lower.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can spray paint the operation automatically, avoid human contact, and improved the paint spraying apparatus for powder feeding box of the quality after spraying paint.

In order to solve the technical problem, the utility model provides a paint spraying device for powder feeding box, which comprises a paint spraying box body, wherein the front end surface of the paint spraying box body is in an open shape, a paint barrel with a paint spraying pump is arranged outside the rear end surface of the paint spraying box body, a paint spraying pipe is arranged on the paint barrel with the paint spraying pump, a paint sprayer is arranged at the top in the paint spraying box body, one end of the paint spraying pipe is connected with the paint barrel with the paint spraying pump, the other end of the paint spraying pipe is connected with the paint sprayer, dust removing devices are arranged on the inner walls of the left and right end surfaces of the paint spraying box body, each dust removing device comprises an outer shell, the outer shells are respectively and fixedly arranged on the inner walls of the left and right end surfaces of the paint spraying box body, each outer shell is in a hollow rectangular tubular structure, one side wall of each outer shell is in an open shape, the open side wall of each outer shell, the air-out shower nozzle all is linked together with the main tuber pipe, the outside of the box that sprays paint still is provided with the air pump, be provided with a plurality of gas-supply pipes with main tuber pipe one-to-one on the air pump, and the air pump is linked together through gas-supply pipe and main tuber pipe, be provided with a plurality of exhaust fans on the rear end face of the box that sprays paint side by side, be provided with the constant head tank on the bottom surface of the box that sprays paint, the one end of constant head tank is the opening form, and the opening of constant head tank flushes with the preceding terminal surface opening of.

Preferably, the paint sprayer comprises a guide frame, the guide frame is of a rectangular frame structure, the rear end of the guide frame is fixedly arranged on the inner wall of the rear end face of the paint spraying box body, the front end of the guide frame is flush with the front end face of the paint spraying box body, a first guide groove and a second guide groove are respectively arranged on the front end face and the rear end face of the guide frame along the length direction, the first guide groove and the second guide groove are of through groove structures, a first paint spraying hanging rod and a second paint spraying hanging rod are respectively arranged on the first guide groove and the second guide groove in a sliding manner, an intermediate seat is fixedly arranged between the first paint spraying hanging rod and the second paint spraying hanging rod, the first paint spraying hanging rod, the second paint spraying hanging rod and the intermediate seat are of hollow structures, the other end of the paint spraying pipe is communicated with the intermediate seat, a first paint spraying conduit and a second paint spraying conduit are respectively arranged in the first paint spraying hanging rod and the second paint spraying hanging rod, the first paint spraying conduit and the second paint spraying conduit are communicated with the intermediate seat, the outer walls of the first paint spraying guide pipe and the second paint spraying guide pipe are respectively provided with a plurality of first paint spraying nozzles and a plurality of second paint spraying nozzles along the length direction, the side walls of the first paint spraying hanging rod and the second paint spraying hanging rod are respectively provided with a first open slot and a second open slot, the first paint spraying nozzles and the second paint spraying nozzles respectively correspond to the first open slot and the second open slot, the inner wall of the guide frame is fixedly provided with a toothed plate along the length direction, the outer wall of the middle seat is fixedly provided with a driving motor with a gear, the gear on the driving motor with the gear is meshed with the toothed plate, the driving motor with the gear is meshed with the toothed plate through gear rotation to drive the middle seat, the first paint spraying hanging rod and the second paint spraying hanging rod to move on the guide frame, paint in a paint bucket with a paint spraying pump enters the middle seat through a paint spraying pipe and then sequentially enters the first paint spraying guide pipe and the second paint spraying guide pipe through the paint guide pipe, and finally, the first paint spraying nozzle and the second paint spraying nozzle on the outer walls of the first paint spraying guide pipe and the second paint spraying guide pipe are sprayed out, so that paint spraying operation is simultaneously completed on two side surfaces of the powder feeding box which is placed in the positioning groove in the bottom surface of the paint spraying box body.

Preferably, the lower extreme of first pipe and the second pipe that sprays paint rotates respectively and sets up on the bottom surface in first guide way and second guide way, the upper end of first pipe and the second pipe that sprays paint is fixed respectively and is provided with first bull stick and second bull stick, and first bull stick and second bull stick activity respectively run through the top of first guide way and second guide way to the outside of first guide way and second guide way, when not carrying out the operation of spraying paint, through rotating first bull stick and second bull stick, can make the position of first paint spraying mouth and second paint spraying mouth stagger with first open slot and second open slot respectively, reduce the pollution of the external world to first paint spraying mouth and second paint spraying mouth, be favorable to protecting first paint spraying mouth and second paint spraying mouth.

Preferably, the first paint spraying hanging rod, the second paint spraying hanging rod and the middle seat are in an inverted U shape, openings of the first open slot and the second open slot are opposite, the first paint spraying hanging rod and the second paint spraying hanging rod are perpendicular to the bottom surface of the paint spraying box body, a first sliding rod and a first connecting rod are sequentially and fixedly arranged on the side wall of the first paint spraying hanging rod from top to bottom, the first sliding rod is slidably arranged in the first guide slot, the first paint spraying hanging rod is fixedly connected with the middle seat through the first connecting rod, a second sliding rod and a second connecting rod are sequentially and fixedly arranged on the side wall of the second paint spraying hanging rod from top to bottom, the second sliding rod is slidably arranged in the second guide slot, the second paint spraying hanging rod is fixedly connected with the middle seat through the second connecting rod, the driving motor with the gear is meshed with the toothed plate through gear rotation, the middle seat, the first paint spraying hanging rod and the second paint spraying hanging rod can be driven to move on the guide frame, the first slide bar can slide in the first guide groove and the second slide bar can slide in the second guide groove at the same time.

Preferably, the first peg that sprays paint and the second distance of spraying paint between the peg is less than the width of constant head tank, the driving motor of the tape drive gear of being convenient for drives the middle seat, first peg and the second of spraying paint move on the leading truck when spraying paint the operation, can set up the length of first peg and the second of spraying paint peg and can stretch into to the constant head tank as required, be favorable to increasing the area of spraying paint, first peg and the second of spraying paint simultaneously the peg can not and the bottom surface of the box that sprays paint interfere between.

Preferably, transparent observation windows are further arranged on the left end face and the right end face of the paint spraying box body, so that the state of paint spraying of the powder feeding box in the paint spraying box body can be observed conveniently through the transparent observation windows.

The utility model has the advantages that:

(1) the dust removal device is arranged, so that surface dust removal can be carried out before the powder feeding box is subjected to paint spraying, the labor amount is reduced, the adhesion of paint is facilitated, and the quality of the paint after the paint spraying is improved;

(2) the first paint spraying conduit and the second paint spraying conduit can realize the paint spraying operation while moving under the drive of the drive motor with the gear, the manual paint spraying operation is not needed, the harm to the human body is reduced, and the uniform paint spraying effect is favorably kept;

(3) air-out shower nozzle, first paint spraying nozzle and second paint spraying nozzle can be accomodate respectively to the shell body, first peg and the second of spraying paint in the peg that sprays paint, be favorable to when not spraying paint the operation pollution abatement and avoid damaging, avoid producing the influence to follow-up operation of spraying paint.

Drawings

The accompanying drawings are included to provide a preferred understanding of the present 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 structural view of a paint spraying apparatus for a powder feeding box according to the present invention;

fig. 2 is a schematic diagram of the position of a toothed plate of the paint spraying device for the powder feeding box of the present invention;

FIG. 3 is a schematic view of a first spray nozzle of the paint spraying apparatus for powder feeding box according to the present invention;

FIG. 4 is a schematic view of a second paint nozzle of the paint spraying apparatus for powder feeding box of the present invention;

the reference signs are: 1. a paint spraying box body; 11. positioning a groove; 12. a roller; 2. a paint bucket with a paint spraying pump; 3. a paint spray pipe; 4. a paint sprayer; 41. a guide frame; 411. a first guide groove; 412. a second guide groove; 42. a first spray painting hanging rod; 421. a first spray painting conduit; 422. a first paint spray nozzle; 423. a first open slot; 424. a first slide bar; 425. a first connecting rod; 43. a second spray painting hanging rod; 431. a second spray painting conduit; 432. a second paint spray nozzle; 433. a second open slot; 434. a second slide bar; 435. a second connecting rod; 44. a middle seat; 45. a paint conduit; 46. a drive motor with a gear; 461. a toothed plate; 5. a dust removal device; 51. an outer housing; 52. a main air duct; 53. an air outlet nozzle; 54. an air pump; 541. a gas delivery pipe; 6. an exhaust fan; 7. a first rotating lever; 8. a second rotating rod; 9. a transparent viewing window.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-4, a paint spraying apparatus for a powder feeding box according to the present embodiment includes a paint spraying box 1, a front end surface of the paint spraying box 1 is open, a paint barrel 2 with a paint spraying pump is disposed outside a rear end surface of the paint spraying box 1, a paint spraying pipe 3 is disposed on the paint barrel 2 with the paint spraying pump, a paint sprayer 4 is disposed at a top portion inside the paint spraying box 1, one end of the paint spraying pipe 3 is connected to the paint barrel 2 with the paint spraying pump, the other end of the paint spraying pipe 3 is connected to the paint sprayer 4, a dust removing device 5 is disposed on inner walls of left and right end surfaces of the paint spraying box 1, the dust removing device 5 includes an outer shell 51, the outer shell 51 is respectively and fixedly disposed on inner walls of the left and right end surfaces of the paint spraying box 1, the outer shell 51 is of a hollow rectangular tubular structure, one side wall of the outer shell 51 is open, and an open side wall of the outer shell 51, be provided with air-out shower nozzle 53 along length direction equidistance interval on the outer wall of main tuber pipe 52, air-out shower nozzle 53 all is linked together with main tuber pipe 52, the outside of the box 1 that sprays paint still is provided with air pump 54, be provided with a plurality of gas-supply pipes 541 with main tuber pipe 52 one-to-one on the air pump 54, and air pump 54 is linked together with main tuber pipe 52 through gas-supply pipe 541, be provided with a plurality of exhaust fans 6 on the rear end face of the box 1 that sprays paint side by side, be provided with constant head tank 11 on the bottom surface of the box 1 that sprays paint, the one end of constant head tank 11 is the opening form, and the opening of constant head tank 11 flushes with the preceding terminal surface.

The paint sprayer 4 comprises a guide frame 41, the guide frame 41 is of a rectangular frame structure, the rear end of the guide frame 41 is fixedly arranged on the inner wall of the rear end face of the paint spraying box body 1, the front end of the guide frame 41 is flush with the front end face of the paint spraying box body 1, a first guide groove 411 and a second guide groove 412 are respectively arranged on the front end face and the rear end face of the guide frame 41 along the length direction, the first guide groove 411 and the second guide groove 412 are of through groove structures, a first paint spraying hanging rod 42 and a second paint spraying hanging rod 43 are respectively arranged on the first guide groove 411 and the second guide groove 412 in a sliding manner, an intermediate seat 44 is fixedly arranged between the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43, the first paint spraying hanging rod 42, the second paint spraying hanging rod 43 and the intermediate seat 44 are of hollow structures, the other end of the paint spraying pipe 3 is communicated with the intermediate seat 44, a first paint spraying pipe 421 and a second paint spraying pipe 431 are respectively arranged in the first paint spraying hanging rod 42 and the second, the first paint spraying guide pipe 421 and the second paint spraying guide pipe 431 are both communicated with the middle base 44 through the paint guide pipe 45, a plurality of first paint spraying nozzles 422 and a plurality of second paint spraying nozzles 432 are respectively arranged on the outer walls of the first paint spraying guide pipe 421 and the second paint spraying guide pipe 431 along the length direction, a first open slot 423 and a second open slot 433 are respectively arranged on the side walls of the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43, the first paint spraying nozzle 422 and the second paint spraying nozzle 432 respectively correspond to the first open slot 423 and the second open slot 433, a toothed plate 461 is fixedly arranged on the inner wall of the guide frame 41 along the length direction, a driving motor 46 with a gear is fixedly arranged on the outer wall of the middle base 44, the gear on the driving motor 46 with the gear is meshed with the toothed plate 461, the driving motor 46 with the gear is meshed with the toothed plate 461 through the rotation of the gear, so as to drive the middle base 44, the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 to move, the paint in the paint bucket 2 with the paint spraying pump enters the middle seat 44 through the paint spraying pipe 3, sequentially enters the first paint spraying guide pipe 421 and the second paint spraying guide pipe 431 through the paint guide pipe 45, and is sprayed out by the first paint spraying nozzle 422 and the second paint spraying nozzle 432 on the outer walls of the first paint spraying guide pipe 421 and the second paint spraying guide pipe 431, so that the paint spraying operation is simultaneously completed on two side surfaces of the powder feeding box in the positioning groove 11 on the bottom surface of the paint spraying box body 1, the lower ends of the first paint spraying guide pipe 421 and the second paint spraying guide pipe 431 are respectively and rotatably arranged on the bottom surfaces in the first guide groove 411 and the second guide groove 412, the upper ends of the first paint spraying guide pipe 421 and the second paint spraying guide pipe 431 are respectively and fixedly provided with a first rotating rod 7 and a second rotating rod 8, and the first rotating rod 7 and the second rotating rod 8 respectively and movably penetrate through the tops of the first guide groove 411 and the second guide groove 412 to the outsides of the first guide groove 411 and the second guide groove 412, when paint spraying operation is not carried out, the positions of the first paint spraying nozzle 422 and the second paint spraying nozzle 432 can be staggered with the first open slot 423 and the second open slot 433 respectively by rotating the first rotating rod 7 and the second rotating rod 8, so that pollution of the outside to the first paint spraying nozzle 422 and the second paint spraying nozzle 432 is reduced, the first paint spraying nozzle 422 and the second paint spraying nozzle 432 are protected, the first paint spraying hanging rod 42, the second paint spraying hanging rod 43 and the middle seat 44 are in an inverted U shape, the openings of the first open slot 423 and the second open slot 433 are opposite, the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 are both vertical to the bottom surface of the paint spraying box body 1, the first sliding rod 424 and the first connecting rod 425 are fixedly arranged on the side wall of the first paint spraying hanging rod 42 from top to bottom in sequence, the first sliding rod 424 is arranged in the first guide slot 411 in a sliding manner, the first paint spraying hanging rod 42 is fixedly connected with the middle seat 44 through the first connecting rod 425, a second sliding rod 434 and a second connecting rod 435 are sequentially and fixedly arranged on the side wall of the second paint spraying hanging rod 43 from top to bottom, the second sliding rod 434 is arranged in the second guide groove 412 in a sliding manner, the second paint spraying hanging rod 43 is fixedly connected with the middle seat 44 through the second connecting rod 435, the driving motor 46 with a gear is meshed with the toothed plate 461 through gear rotation, the middle seat 44 can be driven, the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 can move on the guide frame 41, namely, the first sliding rod 424 can slide in the first guide groove 411 and the second sliding rod 434 can slide in the second guide groove 412 simultaneously, the distance between the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 is smaller than the width of the positioning groove 11, the driving motor 46 with the gear can drive the middle seat 44, and the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 can move on the guide frame 41 for paint spraying operation, the lengths of the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 can be arranged to extend into the positioning groove 11 as required The paint spraying device is beneficial to increasing the paint spraying area, meanwhile, the first paint spraying hanging rod 42 and the second paint spraying hanging rod 43 cannot interfere with the bottom surface of the paint spraying box body 1, transparent observation windows 9 are further arranged on the left end surface and the right end surface of the paint spraying box body 1, and the situation that the powder feeding box in the paint spraying box body 1 is sprayed with paint can be observed conveniently through the transparent observation windows 9.

The utility model discloses a theory of operation is: the powder feeding box to be painted can be placed on the flat cart with the rollers, the flat cart with the rollers is pushed into the positioning groove 11 on the bottom surface of the paint spraying box body 1, the main air pipe 52 is rotatably arranged in the outer shell 51, the main air pipe 52 can be rotated firstly, so that the air outlet spray nozzles 53 on the outer wall of the main air pipe 52 face the powder feeding box to be painted, the air pump 54 is started, the air pump 54 can blow out air with pressure, the air is blown out from the air outlet spray nozzles 53 through the main air pipe 52 by the air conveying pipe 541, dust adhered to the surfaces on two sides of the powder feeding box to be painted can be blown off, the exhaust fan 6 on the rear end surface of the paint spraying box body 1 is started, the exhaust fan 6 can exhaust dust suspended in the paint spraying box body 1, so that dust adhered to the surfaces on two sides of the powder feeding box to be painted can be reduced, dust accumulation in the paint spraying box body 1 can be reduced, and the subsequent paint spraying; after the dust removal is finished, the main air pipe 52 is rotated, so that the air outlet nozzle 53 on the outer wall of the main air pipe 52 is staggered with the opening side wall of the outer shell 51, and the phenomenon that the air outlet nozzle 53 is easily blocked by atomized paint during paint spraying is avoided; then, the driving motor 46 with the gear is started, because the driving motor 46 with the gear is fixedly arranged on the outer wall of the middle seat 44, the driving motor 46 with the gear is meshed with the toothed plate 461 through gear rotation, so that the middle seat 44, the first paint hanging rod 42 and the second paint hanging rod 43 can be driven to move on the guide frame 41 along the length direction of the first guide groove 411 and the second guide groove 412, namely, the first sliding rod 424 can slide in the first guide groove 411, the second sliding rod 434 can slide in the second guide groove 412 to complete the movement of the middle seat 44, the first paint hanging rod 42 and the second paint hanging rod 43, at the same time, the first paint hanging rod 42 and the second paint hanging rod 43 can be respectively positioned at two sides of the powder feeding box to be painted and can move along the length direction of the powder feeding box to be painted, when the first paint hanging rod 42 and the second paint hanging rod 43 move, the paint pump in the paint barrel 2 with the paint pump is started, the paint in the paint bucket 2 with the paint spraying pump enters the middle seat 44 through the paint spraying pipe 3, sequentially enters the first paint spraying conduit 421 and the second paint spraying conduit 431 through the paint conduit 45, and is sprayed out by the first paint spraying nozzle 422 and the second paint spraying nozzle 432 on the outer walls of the first paint spraying conduit 421 and the second paint spraying conduit 431, so that the left side and the right side of the powder feeding box in the positioning groove 11 on the bottom surface of the paint spraying box body 1 are simultaneously painted, the flat cart with the roller can be pulled out from the positioning groove 11, and the position of the powder feeding box on the flat cart with the roller is adjusted according to the requirement of the paint spraying position and then pushed into the positioning groove 11 to finish the paint spraying operation of the rest surfaces; when paint spraying operation is not performed, the first rotating rod 7 and the second rotating rod 8 can be rotated respectively, so that the positions of the first paint spraying nozzle 422 and the second paint spraying nozzle 432 are staggered with the first open slot 423 and the second open slot 433 respectively, pollution of the outside to the first paint spraying nozzle 422 and the second paint spraying nozzle 432 is reduced, and the first paint spraying nozzle 422 and the second paint spraying nozzle 432 are protected; the top surface of the flat-plate cart with the rollers can be arranged to be flush with the positions of the first paint spraying nozzle 422 and the second paint spraying nozzle 432 at the lowest ends of the first paint spraying conduit 421 and the second paint spraying conduit 431 as required, so that the first paint spraying nozzle 422 and the second paint spraying nozzle 432 can achieve a complete paint spraying effect on the surface of the powder feeding box; the door curtain can be arranged on the opening of the front end face of the paint spraying box body 1, and the paint in the paint spraying box body 1 is reduced to be emitted through folding of the door curtain during paint spraying operation.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a send whitewashed paint spraying apparatus for case which characterized in that: comprises a paint spraying box body (1), the front end face of the paint spraying box body (1) is in an open shape, a paint barrel (2) with a paint spraying pump is arranged outside the rear end face of the paint spraying box body (1), a paint spraying pipe (3) is arranged on the paint barrel (2) with the paint spraying pump, a paint sprayer (4) is arranged at the top in the paint spraying box body (1), one end of the paint spraying pipe (3) is connected with the paint barrel (2) with the paint spraying pump, the other end of the paint spraying pipe (3) is connected with the paint sprayer (4), dust removing devices (5) are arranged on the inner walls of the left and right end faces of the paint spraying box body (1), each dust removing device (5) comprises an outer shell (51), the outer shells (51) are respectively and fixedly arranged on the inner walls of the left and right end faces of the paint spraying box body (1), each outer shell (51) is in a hollow rectangular tubular structure, one side wall of each outer shell (51) is in an open shape, the main air pipe (52) is rotationally arranged in the outer shell (51), air outlet spray heads (53) are arranged on the outer wall of the main air pipe (52) at equal intervals along the length direction, the air outlet spray heads (53) are all communicated with the main air pipe (52), an air pump (54) is further arranged outside the paint spraying box body (1), a plurality of air conveying pipes (541) which are in one-to-one correspondence with the main air pipe (52) are arranged on the air pump (54), the air pump (54) is communicated with the main air pipe (52) through the air conveying pipes (541), a plurality of exhaust fans (6) are arranged on the rear end face of the paint spraying box body (1) in parallel, positioning grooves (11) are formed in the bottom face of the paint spraying box body (1), one ends of the positioning grooves (11) are in an opening shape, openings of the positioning grooves (11) are flush with openings of the front end face of the paint.

2. The paint spraying apparatus for a powder feeding box according to claim 1, characterized in that: the paint sprayer (4) comprises a guide frame (41), the guide frame (41) is of a rectangular frame structure, the rear end of the guide frame (41) is fixedly arranged on the inner wall of the rear end face of the paint spraying box body (1), the front end of the guide frame (41) is flush with the front end face of the paint spraying box body (1), a first guide groove (411) and a second guide groove (412) are respectively arranged on the front end face and the rear end face of the guide frame (41) along the length direction, the first guide groove (411) and the second guide groove (412) are of through groove structures, a first paint spraying hanging rod (42) and a second paint spraying hanging rod (43) are respectively arranged on the first guide groove (411) and the second guide groove (412) in a sliding mode, an intermediate seat (44) is fixedly arranged between the first paint spraying hanging rod (42) and the second paint spraying hanging rod (43), and the intermediate seat (44) are of a hollow structure, the other end of the paint spraying pipe (3) is communicated with the middle seat (44), a first paint spraying guide pipe (421) and a second paint spraying guide pipe (431) are respectively arranged in the first paint spraying hanging rod (42) and the second paint spraying hanging rod (43), the first paint spraying guide pipe (421) and the second paint spraying guide pipe (431) are communicated with the middle seat (44) through paint guide pipes (45), a plurality of first paint spraying nozzles (422) and a plurality of second paint spraying nozzles (432) are respectively arranged on the outer walls of the first paint spraying guide pipe (421) and the second paint spraying guide pipe (431) along the length direction, a first open slot (423) and a second open slot (433) are respectively arranged on the side walls of the first paint spraying hanging rod (42) and the second paint spraying hanging rod (43), the first paint spraying nozzle (422) and the second paint spraying nozzle (432) respectively correspond to the first open slot (423) and the second open slot (433), and a toothed plate (461) is fixedly arranged on the inner wall of the guide frame (41) along the length direction, a driving motor (46) with a gear is fixedly arranged on the outer wall of the middle seat (44), and the gear on the driving motor (46) with the gear is meshed with the toothed plate (461).

3. The paint spraying apparatus for a powder feeding box according to claim 2, characterized in that: the lower ends of the first paint spraying guide pipe (421) and the second paint spraying guide pipe (431) are respectively and rotatably arranged on the bottom surfaces of the first guide groove (411) and the second guide groove (412), the upper ends of the first paint spraying guide pipe (421) and the second paint spraying guide pipe (431) are respectively and fixedly provided with a first rotating rod (7) and a second rotating rod (8), and the first rotating rod (7) and the second rotating rod (8) respectively and movably penetrate through the tops of the first guide groove (411) and the second guide groove (412) to the outer portions of the first guide groove (411) and the second guide groove (412).

4. The paint spraying apparatus for a powder feeding box according to claim 3, characterized in that: a first paint spraying hanging rod (42), the second paint spraying hanging rod (43) and the middle seat (44) are in an inverted U shape, openings of the first open groove (423) and the second open groove (433) are opposite, the first paint spraying hanging rod (42) and the second paint spraying hanging rod (43) are perpendicular to the bottom surface of the paint spraying box body (1), a first sliding rod (424) and a first connecting rod (425) are sequentially and fixedly arranged on the side wall of the first paint spraying hanging rod (42) from top to bottom, the first sliding rod (424) is slidably arranged in a first guide groove (411), the first paint spraying hanging rod (42) is fixedly connected with the middle seat (44) through the first connecting rod (425), a second sliding rod (434) and a second connecting rod (435) are sequentially and fixedly arranged on the side wall of the second paint spraying hanging rod (43) from top to bottom, the second sliding rod (434) is slidably arranged in a second guide groove (412), and the second paint spraying hanging rod (43) is fixedly connected with the middle seat (44) through the second connecting rod (435).

5. The paint spraying apparatus for a powder feeding box according to claim 4, characterized in that: the distance between the first paint spraying hanging rod (42) and the second paint spraying hanging rod (43) is smaller than the width of the positioning groove (11).

6. The paint spraying apparatus for a powder feeding box according to claim 1, characterized in that: transparent observation windows (9) are arranged on the left end face and the right end face of the paint spraying box body (1).

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