CN112403785A

CN112403785A - A rust cleaning paint spraying apparatus for old and useless building girder steel

Info

Publication number: CN112403785A
Application number: CN202011340304.4A
Authority: CN
Inventors: 钟闭冷
Original assignee: Shaoxing Xiheng Technology Co ltd
Current assignee: Shaoxing Xiheng Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-26

Abstract

The invention discloses a rust removing and paint spraying device for waste building steel beams, which comprises a support, wherein an inner cavity is arranged in the support, the right wall of the inner cavity is communicated with a discharge hole with a right opening, the left wall of the inner cavity is communicated with a feed inlet with a left opening, the building steel beams are arranged in the feed inlet and the discharge hole in a sliding manner, an air pump device is fixedly arranged on the upper wall of the inner cavity, a sliding rod which slides up and down is arranged in the air pump device, and the lower end of the sliding rod is fixedly connected with a connecting plate.

Description

A rust cleaning paint spraying apparatus for old and useless building girder steel

Technical Field

The invention relates to the field of construction steel beams, in particular to a rust removing and paint spraying device for waste construction steel beams.

Background

The building steel beam is mainly used in building engineering, the corrosion resistance of the building steel beam is poor, paint needs to be sprayed on the surface of the building steel beam, rust prevention painting work is usually carried out manually, particularly, the building steel beam has pungent smell, the long-time contact easily causes great damage to a human body, meanwhile, the building steel beam is placed in a humid environment, rust is easily generated on the surface of the building steel beam, manual rust removal is adopted in the traditional situation, manual rust removal painting is not suitable for mass production, a large amount of manpower and material resources are wasted, the labor intensity of workers is increased, and the working efficiency is reduced.

Disclosure of Invention

In order to solve the problems, the invention provides a rust removing and paint spraying device for waste building steel beams, which comprises a support, wherein an inner cavity is arranged in the support, the right wall of the inner cavity is communicated with a discharge hole with a right opening, the left wall of the inner cavity is communicated with a feed inlet with a left opening, the building steel beams are arranged in the feed inlet and the discharge hole in a sliding manner, an air pump device is fixedly arranged on the upper wall of the inner cavity, a sliding rod which slides up and down is arranged in the air pump device, the lower end of the sliding rod is fixedly connected with a connecting plate, two conductive spring cavities with downward openings are arranged in the lower end of the connecting plate, a linkage rod which slides left and right is arranged in the linkage rod, an electromagnetic spring is connected between one end of the linkage rod, which is far away from the sliding rod, and one side of the conductive spring cavities, which is far away from the sliding rod, and, the lower end of the linkage rod is fixedly connected with a rust removing head, one end of the rust removing head, which is far away from the rust removing head, is fixedly connected with a sandstone box, the rust removing head is communicated in the sandstone box, the lower wall of the inner cavity is communicated with a positioning groove, a sliding block which slides left and right is arranged in the positioning groove, a sliding cavity with an upward opening is arranged in the upper end of the sliding block, the right end of the air pump device is fixedly connected with an air pipeline, an air channel with a downward opening is arranged in the air pipeline, a pneumatic rod which slides up and down is arranged in the air channel, the lower end of the inner cavity is fixedly connected with a supporting block, a rotating cavity which is communicated with the front and the back is arranged in the upper side of the supporting block, a fixed shaft is fixedly connected between the left wall and the right wall of the rotating cavity, the upper end of the front side of the rotating rod is fixedly connected with a fixed rod, the upper end of the fixed rod and the lower end of the pneumatic rod are respectively fixedly connected with a sand-blasting box, one side of the sand-blasting box, which is close to the feed inlet, is fixedly connected with a large sand-blasting head, the front end and the rear end of the sand-blasting box are respectively fixedly connected with a small sand-blasting head, the large sand-blasting head and the small sand-blasting heads are respectively communicated with the inside of the sand-blasting box, the lower wall of the inner cavity is communicated with a guide groove, the guide groove is positioned on the right side of the positioning groove, two linking pipelines are fixedly arranged in the guide groove, a connecting channel is arranged in the linking pipelines, one end of the linking pipelines, which is close to the construction steel beam, is fixedly connected with a side nozzle, the side nozzle is communicated with the connecting channel, the rear wall, the front end of the connecting rod is fixedly connected with a supporting plate, the guiding groove and the supporting plate are internally provided with paint boxes respectively, the paint boxes slide in the guiding groove, two paint boxes are fixedly connected with a paint pipeline close to one end of the building steel beam, the paint pipeline is internally provided with a paint channel which is communicated up and down, the paint pipeline is fixedly connected with a paint spray head close to one end of the building steel beam, the paint spray head is communicated with the paint channel, the paint channel is communicated with the paint box, the front end and the rear end of the paint box are respectively fixedly connected with an elastic pipeline, the elastic pipeline is internally provided with an elastic channel which is communicated front and back, the elastic channel is communicated with the paint box, one end of the elastic pipeline, which is far away from the paint box, is fixedly connected with the connecting pipeline, the elastic channel is communicated with the connecting channel, and the elastic pipeline has elasticity, the supporting plate and the connecting plate are fixedly connected with a supporting rod at one end close to the building steel beam, the supporting rod is fixedly connected with a drying box at one end close to the building steel beam, the waste building steel beam is manually put in from the feeding hole, the building steel beam penetrates through the sliding cavity, the lower end of the building steel beam is abutted against the lower wall of the sliding cavity, the connecting plate is controlled to be electrified, the electromagnetic spring is driven to extend towards one side close to the building steel beam, the front and rear derusting heads are simultaneously driven to abut against the front and rear ends of the building steel beam, the air pump device is started at the moment, the sliding rod is driven to move downwards, the connecting plate is driven to move downwards, the linkage rod is driven to move downwards, the derusting head and the gravel box are driven to slide downwards along the front and rear ends of the building steel beam, and then the front and rear ends of the building steel beam are subjected to, simultaneously air pump unit drive pneumatic rod is followed the downward slip in the gas passage, and then drives the transfer line downstream drives simultaneously the push rod downstream, and then drives dwang back side direction rotates down, drives simultaneously the dwang front side rotates upwards, and then promotes the dead lever upward movement drives simultaneously the sandblast case is to being close to one side motion of building girder steel, and then drives little sandblast head with big sandblast head is to being close to building girder steel people one side motion drives simultaneously big sandblast head with little sandblast head is to the inside rust cleaning sandblast that carries out of big sandblast head, simultaneously the sliding block is followed the constant head tank slides right, and then drives the building girder steel moves right, drives the part that the rust cleaning finishes simultaneously the building girder steel moves right to move to two between the sandblast head, simultaneously paint in the paint tank pass through connect the passageway with the elasticity passageway gets into in the side shower nozzle The side shower nozzle spout and spout building girder steel front and back end, simultaneously the paint can is followed guide way reciprocating sliding back and forth drives connecting plate reciprocating motion, and then drives the connecting rod with backup pad reciprocating motion back and forth, simultaneously the reciprocating motion back and forth of paint spraying head, and then drive the paint spraying head to the lower extreme sprays paint on the building girder steel, the back of spraying paint simultaneously the building girder steel continues to move right two between the stoving case, and then drives the stoving case is to after spraying paint the building girder steel carries out drying process, simultaneously the building girder steel continues to move right in the discharge gate to finish processing the building girder steel transports the external world.

Beneficially, a motor is fixedly arranged on the rear wall of the right side of the inner cavity, the front end of the motor is in power connection with a motor shaft, the rear wall of the inner cavity is in rotating connection with a conveyor belt wheel shaft, the conveyor belt wheel shaft is located on the right side of the motor shaft, conveyor belt wheels are fixedly connected to the conveyor belt wheel shaft and the motor shaft respectively, a conveyor belt is connected between the two conveyor belt wheels, the building steel beam is arranged on the upper side of the conveyor belt, the motor is started at the moment, the motor shaft is driven to rotate, the conveyor belt wheel shaft is driven to rotate, meanwhile, the upper end of the conveyor belt is driven to move.

Beneficially, the sliding block right-hand member has linked rack firmly, the inner chamber back wall rotates and is connected with the roll gear axle, roll gear has linked firmly on the roll gear axle, roll gear upper end mesh in linked rack right side lower extreme, roll gear axle with synchronous pulley has been linked firmly respectively on the motor shaft, is connected with the hold-in range between two synchronous pulley, and at this moment the motor shaft drives roll gear axle rotates, and then drives roll gear rotates, drives simultaneously linked rack moves to the right, and then drives the sliding block and follows the constant head tank moves to the right.

Beneficially, the connecting plate right-hand member has linked firmly the deflector, deflector right-hand member linear arrangement has linked firmly five cylindric locks, the inner chamber lower wall has set firmly the fixed block, the fixed block is located the guide way right side, be equipped with the spacing groove of opening left in the fixed block left end, the spacing inslot is equipped with gliding stopper from top to bottom, stopper internal rotation is connected with the linkage gyro wheel axle, the stopper lower extreme with be connected with buffer spring between the spacing groove lower wall, the linkage gyro wheel axle left end links firmly the linkage gyro wheel, the linkage gyro wheel with mesh between the cylindric lock, at this moment the linkage gyro wheel axle rotates, drives the linkage gyro wheel rotates, and then drives the deflector reciprocating motion back and forth drives connecting plate reciprocating motion back and forth simultaneously.

Beneficially, the left end of the motor is in power connection with a transmission shaft, the transmission shaft and the linkage roller shaft are respectively and fixedly connected with a linkage belt wheel, a linkage belt is connected between the two linkage belt wheels, and at the moment, the motor is started to drive the transmission shaft to rotate, so that the linkage roller shaft is driven to rotate.

The invention has the beneficial effects that: the air pump device controls the two sand blasting devices to lift, the surface of the building steel beam is subjected to all-dimensional rust removal treatment, the linkage roller wheel is matched with the cylindrical pin, the paint spraying head is controlled to reciprocate, and the building steel beam is automatically sprayed with paint, so that a large amount of manpower and material resources are saved, the labor intensity of workers is reduced, the working efficiency is improved, and the working quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic overall structure diagram of a rust removing and paint spraying device for waste and old building steel beams according to the invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;

FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 1;

FIG. 6 is an enlarged view of "E" of FIG. 1;

FIG. 7 is an enlarged view of "F" of FIG. 6;

FIG. 8 is a schematic view of the structure in the direction "G-G" of FIG. 7.

Detailed Description

The invention will now be described in detail with reference to fig. 1-8, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a rust removing and paint spraying device for waste building steel beams, which comprises a support 11, wherein an inner cavity 12 is arranged in the support 11, the right wall of the inner cavity 12 is communicated with a discharge hole 26 with a rightward opening, the left wall of the inner cavity 12 is communicated with a feed hole 38 with a leftward opening, a building steel beam 72 is arranged in the feed hole 38 and the discharge hole 26 in a sliding manner, an air pump device 15 is fixedly arranged on the upper wall of the inner cavity 12, a sliding rod 14 which slides up and down is arranged in the air pump device 15, the lower end of the sliding rod 14 is fixedly connected with a connecting plate 13, two conductive spring cavities 88 with downward openings are arranged in the lower end of the connecting plate 13, a linkage rod 74 which slides left and right is arranged in the linkage rod 74, an electromagnetic spring 73 is connected between one end of the linkage rod 74 far away from the sliding rod 14 and one side of the conductive spring cavities 88 far away from the, the lower end of the linkage rod 74 is fixedly connected with a rust removing head 75, one end of the rust removing head 75, which is far away from the rust removing head 75, is fixedly connected with a sandstone box 76, the rust removing head 75 is communicated with the sandstone box 76, the lower wall of the inner cavity 12 is communicated with a positioning groove 34, a sliding block 35 which slides left and right is arranged in the positioning groove 34, a sliding cavity 77 with an upward opening is arranged in the upper end of the sliding block 35, the right end of the air pump device 15 is fixedly connected with an air pipeline 16, an air channel 17 with a downward opening is arranged in the air pipeline 16, a pneumatic rod 18 which slides up and down is arranged in the air channel 17, the lower end of the inner cavity 12 is fixedly connected with a supporting block 78, a rotating cavity 79 which is through from front to back is arranged in the upper side of the supporting block 78, a fixing shaft 89 is fixedly connected between, the lower end of the rear side of the transmission rod 82 is fixedly connected with a push rod 81, the lower end of the push rod 81 is abutted against the upper end of the rear side of the rotating rod 28, the upper end of the front side of the rotating rod 28 is fixedly connected with a fixed rod 29, the upper end of the fixed rod 29 and the lower end of the pneumatic rod 18 are respectively fixedly connected with a sand-blasting box 30, one side of the sand-blasting box 30 close to the feed port 38 is fixedly connected with a large sand-blasting head 37, the front end and the rear end of the sand-blasting box 30 are respectively fixedly connected with a small sand-blasting head 80, the large sand-blasting head 37 and the small sand-blasting head 80 are respectively communicated with the sand-blasting box 30, the lower wall of the inner cavity 12 is communicated with a guide groove 50, the guide groove 50 is positioned at the right side of the positioning groove 34, two linking pipelines 27 are fixedly arranged in the guide groove 50, connecting channels 66 are arranged in the linking pipelines 27, the rear wall of the inner cavity 12 is fixedly connected with an expansion pipe 67, a connecting spring 68 is arranged in the expansion pipe 67, the expansion pipe 67 itself has expansion performance, the front end of the expansion pipe 67 is fixedly connected with a connecting rod 69, the front end of the connecting rod 69 is fixedly connected with a support plate 24, paint boxes 49 are respectively arranged in the guide groove 50 and the support plate 24, the paint boxes 49 slide in the guide groove 50, one ends of the two paint boxes 49, which are close to the building steel beam 72, are fixedly connected with paint pipelines 46, paint channels 47 which are communicated up and down are arranged in the paint pipelines 46, one ends of the paint pipelines 46, which are close to the building steel beam 72, are fixedly connected with paint heads 45, the paint heads 45 are communicated with the paint channels 47, the paint channels 47 are communicated with the paint boxes 49, the front ends and the rear ends of the paint boxes 49 are respectively fixedly connected with elastic pipelines 70, and elastic channels 71 which are communicated up and down are, the elastic channel 71 is communicated with the inside of the paint box 49, one end of the elastic pipeline 70 far away from the paint box 49 is fixedly connected with the connecting pipeline 27, the elastic channel 71 is communicated with the inside of the connecting channel 66, the elastic pipeline 70 has elasticity, one end of the support plate 24 and one end of the connecting plate 44 close to the building steel beam 72 are fixedly connected with the support rod 43, one end of the support rod 43 close to the building steel beam 72 is fixedly connected with the drying box 42, at the moment, the waste building steel beam 72 is manually put in from the feed inlet 38, meanwhile, the building steel beam 72 passes through the sliding cavity 77, the lower end of the building steel beam 72 is abutted against the lower wall of the sliding cavity 77, meanwhile, the connecting plate 13 is controlled to be electrified, the electromagnetic spring 73 is driven to extend towards one side close to the building steel beam 72, and the front and rear side rust removal heads 75 are driven to abut against the front and rear ends of the building steel beam, at this time, the air pump device 15 is started to drive the sliding rod 14 to move downwards, so as to drive the connecting plate 13 to move downwards, and simultaneously drive the linkage rod 74 to move downwards, so as to drive the rust removing head 75 and the sand box 76 to slide downwards along the front and rear ends of the construction steel beam 72, so as to perform sand blasting rust removal on the front and rear ends of the construction steel beam 72 through the rust removing head 75, and simultaneously, the air pump device 15 drives the pneumatic rod 18 to slide downwards along the gas channel 17, so as to drive the transmission rod 82 to move downwards, and simultaneously drive the push rod 81 to move downwards, so as to drive the rear side of the rotating rod 28 to rotate downwards, and simultaneously drive the front side of the rotating rod 28 to rotate upwards, so as to push the fixing rod 29 to move upwards, simultaneously drive the sand blasting box 30 to move towards one side close to the construction steel beam 72, and further drive the small sand blasting head 80 and the large sand blasting head 37 to move towards one side, simultaneously driving the large sand-blasting head 37 and the small sand-blasting head 80 to perform sand-blasting rust-removal on the inside of the large sand-blasting head 37, simultaneously sliding block 35 slides rightwards along the positioning groove 34, and then driving the construction steel beam 72 to move rightwards, and simultaneously driving the part of rust-removal completion to move rightwards and move to two between the paint-blasting heads 45, simultaneously the paint in the paint box 49 enters the side spray head 90 through the connecting channel 66 and the elastic channel 71, is sprayed out by the side spray head 90 and sprayed to the front and rear ends of the construction steel beam 72, simultaneously the paint box 49 slides back and forth along the guide groove 50 to drive the connecting plate 44 to reciprocate back and forth, and then driving the connecting rod 69 and the supporting plate 24 to reciprocate back and forth, and simultaneously the paint-blasting heads 45 reciprocate back and forth, and further driving the paint-blasting heads 45 to spray paint on the upper and lower ends of the construction steel beam 72, after spraying paint simultaneously building girder 72 continues to move to two right between the stoving case 42, and then drives stoving case 42 is to the after spraying paint building girder 72 carries out drying process, simultaneously building girder 72 continues to move right in discharge gate 26 to will finish processing building girder 72 transports the external world.

Advantageously, a motor 61 is fixedly arranged on the rear wall of the right side of the inner cavity 12, a motor shaft 41 is dynamically connected to the front end of the motor 61, a conveyor belt wheel shaft 20 is rotatably connected to the rear wall of the inner cavity 12, the conveyor belt wheel shaft 20 is positioned on the right side of the motor shaft 41, conveyor belt wheels 40 are respectively fixedly connected to the conveyor belt wheel shaft 20 and the motor shaft 41, a conveyor belt 39 is connected between the two conveyor belt wheels 40, the construction steel beam 72 is placed on the upper side of the conveyor belt 39, at this time, the motor 61 is started to drive the motor shaft 41 to rotate, further drive the conveyor belt wheel shaft 20 to rotate, and simultaneously drive the upper end of the conveyor belt 39 to move to the right.

Beneficially, sliding block 35 right-hand member has linked rack 36 firmly, inner chamber 12 back wall rotates and is connected with roll gear shaft 31, roll gear 32 has been linked firmly on the roll gear shaft 31, roll gear 32 upper end meshing in linked rack 36 right side lower extreme, roll gear shaft 31 with synchronous pulley 63 has been linked firmly respectively on the motor shaft 41, is connected with hold-in range 64 between two synchronous pulley 63, this moment motor shaft 41 drives roll gear shaft 31 rotates, and then drives roll gear 32 rotates, drives simultaneously linked rack 36 moves to the right side, and then drives sliding block 35 edge constant head tank 34 moves to the right side.

Advantageously, a guide plate 51 is attached to the right end of the connecting plate 44, five cylindrical pins 52 are attached to the right end of the guide plate 51 in a linear arrangement, a fixed block 56 is fixedly arranged on the lower wall of the inner cavity 12, the fixed block 56 is positioned on the right side of the guide groove 50, a limiting groove 57 with a leftward opening is arranged in the left end of the fixing block 56, a limiting block 58 which can slide up and down is arranged in the limiting groove 57, a linkage roller shaft 59 is rotatably connected in the limiting block 58, a buffer spring 60 is connected between the lower end of the limiting block 58 and the lower wall of the limiting groove 57, the left end of the linkage roller shaft 59 is fixedly connected with a linkage roller 53, the linkage roller 53 is meshed with the cylindrical pin 52, at the moment, the linkage roller shaft 59 rotates to drive the linkage roller 53 to rotate, thereby driving the guide plate 51 to reciprocate back and forth and driving the connecting plate 44 to reciprocate back and forth.

Beneficially, a transmission shaft 62 is connected to the left end of the motor 61 in a power manner, the transmission shaft 62 and the linkage roller shaft 59 are respectively and fixedly connected with a linkage belt wheel 55, a linkage belt 54 is connected between the two linkage belt wheels 55, and at this time, the motor 61 is started to drive the transmission shaft 62 to rotate, and further drive the linkage roller shaft 59 to rotate.

The use steps of the rust removing and paint spraying device for waste and old construction steel beams in the text are described in detail with reference to fig. 1 to 8 as follows:

initially, the electromagnetic spring 73 is in a natural state, while the slide lever 14 and the pneumatic lever 18 are in the upper limit position, and the buffer spring 60 is in an extended state.

At the moment, waste and old construction steel beams 72 are manually put in from the feed inlet 38, meanwhile, the construction steel beams 72 pass through the sliding cavity 77, the lower ends of the construction steel beams 72 are abutted against the lower wall of the sliding cavity 77, meanwhile, the connection plate 13 is controlled to be electrified, further, the electromagnetic spring 73 is driven to extend towards one side close to the construction steel beams 72, meanwhile, the front and rear side rust removing heads 75 are driven to be abutted against the front and rear ends of the construction steel beams 72, at the moment, the air pump device 15 is started, the sliding rod 14 is driven to move downwards, further, the connection plate 13 is driven to move downwards, simultaneously, the linkage rod 74 is driven to move downwards, further, the rust removing head 75 and the sandstone box 76 are driven to slide downwards along the front and rear ends of the construction steel beams 72, further, the front and rear ends of the construction steel beams 72 are subjected to sand blasting rust removal through the rust removing heads 75, meanwhile, the air pump device 15 drives the pneumatic, simultaneously, the front side of the rotating rod 28 is driven to rotate upwards, the fixing rod 29 is further pushed to move upwards, the sand-blasting box 30 is simultaneously driven to move towards one side close to the construction steel beam 72, the small sand-blasting head 80 and the large sand-blasting head 37 are further driven to move towards one side close to the construction steel beam 72, the large sand-blasting head 37 and the small sand-blasting head 80 are simultaneously driven to perform sand blasting and rust removal on the inside of the large sand-blasting head 37, at the moment, the motor 61 is started to drive the motor shaft 41 to rotate, the rolling gear shaft 31 is further driven to rotate, the rolling gear 32 is further driven to rotate, the linkage rack 36 is simultaneously driven to move rightwards, the sliding block 35 is further driven to slide rightwards along the positioning groove 34, the construction steel beam 72 is further driven to move rightwards, a part of the construction steel beam 72 after rust removal is simultaneously driven to move rightwards and move between the two paint, the paint is sprayed out of the side spray heads 90 and sprayed to the front and rear ends of the construction steel beam 72, the motor 61 drives the transmission shaft 62 to rotate, the linkage roller shaft 59 is driven to rotate, the linkage roller 53 is driven to rotate, the guide plate 51 is driven to reciprocate back and forth, the connecting plate 44 is driven to reciprocate back and forth, the paint boxes 49 are driven to slide back and forth along the guide groove 50, the connecting rod 69 and the support plate 24 are driven to reciprocate back and forth, the paint spray head 45 is driven to spray paint the upper and lower ends of the construction steel beam 72, the construction steel beam 72 after paint spraying continues to move rightwards between the two drying boxes 42, the drying boxes 42 are driven to dry the construction steel beam 72 after paint spraying, the construction steel beam 72 continues to move rightwards to the upper end of the conveyor belt 39, the motor 61 drives the motor shaft 41 to, meanwhile, the upper end of the conveyor belt 39 is driven to move rightwards, and the processed construction steel beam 72 is driven to move rightwards to the discharge hole 26 and is conveyed to the outside.

The above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a rust cleaning paint spraying apparatus for old and useless building steel roof beam, includes the support, its characterized in that: an inner cavity is arranged in the support, the right wall of the inner cavity is communicated with a discharge hole with a right opening, the left wall of the inner cavity is communicated with a feed inlet with a left opening, a construction steel beam is arranged in the feed inlet and the discharge hole in a sliding manner, an air pump device is fixedly arranged on the upper wall of the inner cavity, a sliding rod which slides up and down is arranged in the air pump device, the lower end of the sliding rod is fixedly connected with a connecting plate, two conductive spring cavities with downward openings are arranged in the lower end of the connecting plate, a linkage rod which slides left and right is arranged in the linkage rod, an electromagnetic spring is connected between one end of the linkage rod, which is far away from the sliding rod, and one side of the conductive spring cavity, which is far away from the sliding rod, the electromagnetic spring is electrically connected with the connecting plate, a rust removing head is fixedly connected with the lower end of the linkage rod, the lower wall of the inner cavity is communicated with a positioning groove, a sliding block sliding left and right is arranged in the positioning groove, a sliding cavity with an upward opening is arranged in the upper end of the sliding block, a gas pipeline is fixedly connected to the right end of the air pump device, a gas channel with a downward opening is arranged in the gas pipeline, a pneumatic rod sliding up and down is arranged in the gas channel, a supporting block is fixedly connected to the lower end of the inner cavity, a rotating cavity communicated with the front and the back is arranged in the upper side of the supporting block, a fixed shaft is fixedly connected between the left wall and the right wall of the rotating cavity, a rotating rod is rotatably connected to the fixed shaft and is fixedly connected to the pneumatic rod, a transmission rod is fixedly connected to the lower end of the rear side of the transmission rod, the lower end of the push rod is abutted against the upper end of the rear side of the rotating rod, a fixed, the front end and the rear end of the sand-blasting box are respectively fixedly connected with a small sand-blasting head, the large sand-blasting head and the small sand-blasting head are respectively communicated in the sand-blasting box, the lower wall of the inner cavity is communicated with a guide groove, the guide groove is positioned at the right side of the positioning groove, two linking pipelines are fixedly arranged in the guide groove, a connecting channel is arranged in each linking pipeline, one end of each linking pipeline close to the building steel beam is fixedly connected with a side spray head, the side spray heads are communicated in the connecting channels, the rear wall of the inner cavity is fixedly connected with a telescopic pipe, a connecting spring is arranged in each telescopic pipe, each telescopic pipe has flexibility, the front end of each telescopic pipe is fixedly connected with a connecting rod, the front end of each connecting rod is fixedly connected with a support plate, paint boxes are respectively arranged in the guide groove and the support plate, the paint boxes slide in the guide grooves, and one ends of the two, the utility model discloses a paint drying device, including paint pipeline, paint channel, elastic pipeline, backup pad, connecting plate, bracing piece, stoving case, the one end of building girder steel links firmly the paint channel that link up from top to bottom, paint channel is equipped with in the paint channel, paint channel communicate in the paint box, the paint box front and back end has linked firmly the elastic pipeline respectively, the elastic pipeline that link up is equipped with the front and back in the elastic pipeline, the elastic channel communicate in the paint box, the elastic pipeline is kept away from the one end of paint box link firmly in link up the pipeline, the elastic channel communicate in the connecting channel, just elastic pipeline self has the elasticity, the backup pad with the connecting plate is close to building girder steel one.

2. The rust removing and paint spraying device for the waste and old building steel beams as claimed in claim 1, which is characterized in that: the building steel beam is arranged on the upper side of the conveying belt, the inner cavity is provided with a right-side rear wall, the front end of the motor is in power connection with a motor shaft, the inner cavity rear wall is in rotating connection with a conveying belt wheel shaft, the conveying belt wheel shaft is located on the right side of the motor shaft, the conveying belt wheels are fixedly connected to the conveying belt wheel shaft and the motor shaft respectively, the conveying belt is connected between the two conveying belt wheels, and the building steel beam is arranged on the upper side of.

3. The rust removing and paint spraying device for the waste and old building steel beams as claimed in claim 1, which is characterized in that: the sliding block right-hand member has linked rack firmly, the inner chamber back wall rotates and is connected with the roll gear axle, roll gear has linked firmly on the roll gear axle, roll gear upper end mesh in linked rack right side lower extreme, roll gear axle with synchronous pulley has been linked firmly respectively on the motor shaft, is connected with the hold-in range between two synchronous pulley.

4. The rust removing and paint spraying device for the waste and old building steel beams as claimed in claim 3, which is characterized in that: the connecting plate right-hand member has linked firmly the deflector, deflector right-hand member linear arrangement has linked firmly five cylindric locks, the inner chamber lower wall has set firmly the fixed block, the fixed block is located the guide way right side, be equipped with the spacing groove of opening left in the fixed block left end, the spacing inslot is equipped with gliding stopper from top to bottom, stopper internal rotation is connected with the linkage gyro wheel axle, the stopper lower extreme with be connected with buffer spring between the spacing groove lower wall, linkage gyro wheel axle left end link firmly has the linkage gyro wheel, the linkage gyro wheel with mesh between the cylindric lock.

5. The rust removing and paint spraying device for the waste and old building steel beams as claimed in claim 4, which is characterized in that: the left end of the motor is in power connection with a transmission shaft, the transmission shaft and the linkage roller shaft are respectively and fixedly connected with linkage belt wheels, and a linkage belt is connected between the two linkage belt wheels.