CN209753166U

CN209753166U - Sand blasting and spraying integrated device for porous metal coating on surface of metal pipe fitting

Info

Publication number: CN209753166U
Application number: CN201920297042.4U
Authority: CN
Inventors: 杨开远; 杨心宇
Original assignee: Individual
Current assignee: Daqing Saitong Machinery Manufacturing Co ltd
Priority date: 2019-03-10
Filing date: 2019-03-10
Publication date: 2019-12-10
Anticipated expiration: 2029-03-10

Abstract

the utility model discloses a porous metal coating sandblast spraying integrated device in metal pipe fitting surface belongs to the spraying device, comprises sandblast section and the continuous device that is in the same line of spraying section, and sharp interval has set up the basic tube side supporting wheel and a basic tube centre gripping operation actuating mechanism in a plurality of lines on the support track, is equipped with the sandblast case at the orbital end of support, has the spraying case side by side behind the sandblast case, has set up a plurality of pulley support mounds with the supporting wheel one-tenth same straight line. This device, structural design is reasonable, can once only accomplish the sandblast, the spraying operation, the spraying is efficient, the spraying is effectual, the structure size reduces, area is little, the manual work has been saved, the spraying high efficiency with spout the layer of high quality, the coating is even, the parent tube does not have axial tensile stress, circumferential direction torsional deformation is also very little, the coating residual stress is very little, the coating binding capacity is high, the parent tube is short from the sandblast to the spraying interval time, the passivation of sandblast surface is little, secondary clamping when there is not the spraying, the device adapts to the parent tube of various length.

Description

Sand blasting and spraying integrated device for porous metal coating on surface of metal pipe fitting

Technical Field

The utility model relates to a spraying device, in particular to porous metal coating sandblast spraying integrated device in metal pipe fitting surface.

Background

The traditional preparation process of the porous metal coating on the surface of the pipe fitting comprises the following steps of firstly carrying out rust removal and texturing treatment on a base pipe on a sand blasting production line: with the parent tube clamping on the drive dolly, under the effect of drive dolly, the parent tube is rotatory and axial motion, gets into the sand-blasting box, under the effect of sand-blasting gun, the surface oxide film is cleared away, and the surface can be roughened simultaneously (the purpose of texturing is to improve parent tube roughness, increases the cohesion on coating and parent tube surface during the spraying), and this in-process, the support that the parent tube does not sand blast the part is manual tilting mechanism, needs manual operation, occupies manpower resources.

The treated base tube is transferred to a spraying process, in the spraying process, two ends of the base tube are clamped in a chuck, one end of the chuck is a rotary driving end, the other end of the chuck is a driven end, after the base tube rotates, a bottoming layer spray gun and a working layer spray gun are sequentially ignited, then the spraying is started by aiming at the axis of the base tube, the spray gun is driven by a driving trolley to perform feeding motion along the axial direction of the base tube, and a metal porous surface coating is formed on the surface of the base tube in the motion process, so that the base tube is complex in clamping, rotating and spray gun travelling mechanisms and is prone to failure; the middle axial supporting point in the spraying process of the base pipe cannot form a coating due to the shielding effect of the mechanism; the base pipe is heated to generate axial extension in the spraying process and needs to be manually tensioned, the fixed end chuck is manually and axially tensioned, the problem of untimely tensioning exists, the base pipe is easy to generate radial run-out, and the coating is not uniform; spraying operators need to follow the spraying trolley to walk so as to monitor and adjust the position of the spray gun at any time, and the labor intensity of the operators is high; the interval of the non-support parts of the base pipe is larger, and the radial run-out is large under the action of centrifugal force during rotation, so that the formed coating is uneven; the base pipe has torsion and tensile elastic deformation in the spraying process, and after the clamp is removed after spraying, the residual stress of the coating is larger, so that the binding force of the coating is reduced; the interval time from sand blasting to spraying of the base pipe is long, the surface of sand blasting is easy to passivate, and the binding force of the coating is reduced; the base pipe has secondary clamping from sand blasting to spraying, and the working efficiency of the device is low; the device can not adapt to metal pipes with various lengths, and the whole occupied area of the device is large; the flue gas suction hood is as long as the production line, and the required power of a draught fan is larger; the air supply line of the spray gun and the power line of the walking trolley are in a suspension following structure, and the structure is complex.

Disclosure of Invention

Not enough to prior art, the utility model provides a metal pipe surface porous metal coating sandblast spraying integrated device.

The utility model discloses a porous metal coating sandblast spraying integrated device in metal pipe fitting surface comprises sandblast section and the continuous device in alignment of spraying section, has set up a plurality of basic tube supporting mechanism in alignment and a basic tube centre gripping operation actuating mechanism on the support track straight line interval, is equipped with the sand-blasting box at the orbital end of support, has the spraying rack side by side behind the sand-blasting box, becomes with basic tube supporting mechanism and has set up a plurality of pulley support mounds with the straight line.

as a further improvement, the utility model discloses a establish the track of two parallels on the support track, fixed a plurality of parent tube supporting mechanism that stretch to the straight line between two rails on one side track at an interval, there is the electronic dolly of riding on two tracks, is equipped with driving motor on the electronic dolly, the drive gear of motor meshes with the rack on the track mutually to be equipped with basic union coupling fixture at the front end of electronic dolly, constituted parent tube centre gripping operation actuating mechanism from this.

As a further improvement of the utility model, the sand-blasting box at the end of the track is formed by the axial line of the base pipe in the sand-blasting box which is radially aligned and runs through by the sand-sucking pipe at the bottom of the sand-feeding hopper and the sand-blasting nozzle and the root of the sand-blasting gun, the tail of the sand-blasting gun and the sand-blasting nozzle of the sand-blasting gun connected with the high-pressure air line.

As a further improvement of the utility model, the middle part of the sand-blasting box is a sand-blasting chamber, a base pipe passes through the sand-blasting chamber, and a sand-blasting nozzle is aligned with the axis of the base pipe; the lower part of the sand blasting box is connected with a sand grain feeding hopper, and a sand suction pipe at the bottom of the sand blasting box is connected with a sand blasting gun; the upper part of the sand-blasting box is provided with a dust hood and a connecting air-guiding duct; the high-pressure air line at the tail end of the sand blasting nozzle is connected to an air compression buffer tank and an air compressor.

As the utility model discloses a further improvement has arranged more than one powder flame spray gun on the spraying rack, and the connection of powder flame spray gun's afterbody has acetylene gas pipe and oxygen hose, has the metal powder jar in the intercommunication spray gun on the neck section lateral wall of powder flame spray gun, and this neck section is the feed segment, and the sub-unit connection material co-combustion section of feed segment, until the flame nozzle of powder flame spray gun constitutes.

As a further improvement, the powder flame spray gun on the spraying rack is divided into a bottoming spray gun and at least one working layer spray gun, and the nozzle of each powder flame spray gun is aligned with the axis of the base pipe.

As a further improvement of the utility model, the upper part of the spraying rack is provided with a base pipe which passes through transversely, a bottoming spray gun and a working layer spray gun which are arranged side by side are fixed on a bottom bracket, and the flame nozzles of the bottoming spray gun and the working layer spray gun are all aligned to the axis of the base pipe one by one; the upper part of the spraying rack is provided with a smoke exhaust hood which is connected with a smoke exhaust pipe and then is connected to a chimney through an induced draft fan.

As a further improvement of the utility model, parent tube supporting mechanism by the cylinder, the cylinder mount, the wheel seat, left side support guide pulley I, right side support guide pulley I and last spacing guide pulley I constitute, the cylinder is vertical to be fixed in on the cylinder mount, the wheel seat transversely is fixed in on the cylinder ejector pin of cylinder, two wheel carriers I have been vertically fixed on the wheel seat to the bilateral symmetry of cylinder ejector pin, left side support guide pulley I and right side support guide pulley I have been assembled respectively in two I upper ends of wheel carrier, turn to motor I in the vertical fixed in right side of wheel seat, there is last spacing guide pulley bracing piece I to turn to I output shaft linkage of motor, go up the horizontal end of spacing guide pulley bracing piece I and assembled last spacing guide pulley I, support guide pulley I on a left side, right side support guide pulley I and last spacing guide pulley I become the centre gripping of triangle-shaped parent tube and run.

as a further improvement of the utility model, base union coupling fixture, constitute by casing seat, lead awl, pull rod, operation spiral shell dish and pusher dog, lead awl and pull rod as coaxial an organic whole, the pull rod runs through casing seat and alternate clearance fit, the expansion joint has been suit between the inboard shoulder of lead awl and the end of casing seat, the tail end of pull rod is equipped with the pusher dog symmetrically, the pusher dog passes the rectangular hole of casing seat, the outer mouthful of operation spiral shell dish offsets with the terminal surface of pusher dog, lead in the awl inserts the port of base pipe, by the pull rod pulling lead the expansion joint on awl and its pole tight with the inner wall of base pipe, there is rather than the flange that becomes an organic whole at the tail end of casing seat, the flange is connected with electronic dolly.

As a further improvement of the present invention, a gas cap supporting device which is in the same line with the base tube supporting mechanism is arranged behind the spraying rack, the gas cap supporting device is composed of a supporting rod, a supporting frame, a left supporting guide wheel II, a right supporting guide wheel II and an upper limiting guide wheel II, the supporting frame is transversely fixed on the supporting rod, two wheel carriers II are vertically fixed on the supporting frame symmetrically at two sides of the supporting rod, the left supporting guide wheel II and the right supporting guide wheel II are respectively assembled at the upper ends of the two lower wheel carriers II, a steering motor II is vertically fixed at the right side of the supporting frame, an output shaft of the steering motor II is linked with an upper limiting guide wheel supporting rod II, the upper limiting guide wheel II is assembled at the transverse end of the upper limiting guide wheel supporting rod II, and the left supporting guide wheel II, the right supporting guide wheel II and the upper limiting guide wheel II form an equilateral triangle and are wound on; three gas nozzles vertical to the axis of the base tube are arranged on the two wheel carriers II and the transverse end of the upper limiting guide wheel support rod II, and the gas nozzles are matched with the tube wall of the base tube at equal intervals.

The utility model discloses a porous metal coating sandblast spraying integrated device on metal pipe fitting surface, structural design is reasonable, can once only accomplish sandblast, spraying operation, and the spraying is efficient, and the spraying is effectual, and the device structure size reduces, and area is little; the base tube supporting mechanism and the base tube clamping operation driving mechanism replace a manual overturning supporting mechanism, so that the labor is saved; a powder flame spray gun moving trolley device is omitted, the powder flame spray gun is of a fixed structure and is always fixed in the spraying process, and the fuel flow center of the powder flame spray gun and the axis of the base pipe are effectively ensured to be centered, so that the spraying efficiency and the spraying layer quality are improved; the support distance of the spraying part is small, so that the uniformity of the coating is greatly improved, and the spraying efficiency and the coating quality are improved; when the base pipe rotates and moves axially, one end of the base pipe is a free end, no axial tensile stress exists, the circumferential torsional deformation is very small, the residual stress of the coating is very small, and the binding force of the coating is high; after the base pipe is clamped, the base pipe is driven by the electric trolley to rotate and axially move along the support rail, the time interval from sand blasting to spraying of the base pipe is short, the surface passivation of the sand blasting is small, and the binding force of a coating is effectively improved; the device does not have secondary clamping during spraying, and the work efficiency is improved. Meanwhile, the device is not limited to the base pipe with the same circumferential section size, and is also suitable for pipe types with different circumferential sizes, such as a zoom pipe and a corrugated pipe.

Drawings

Fig. 1 is a schematic structural view of the present invention;

Fig. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the structure of the electric cart of the present invention;

FIG. 4 is a schematic structural view of a sand-blasting box according to the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic view of the powder flame spray gun of the present invention;

FIG. 7 is a side view of the powder flame spray gun of the present invention;

FIG. 8 is a schematic structural view of the base tube support mechanism of the present invention;

FIG. 9 is a side view of FIG. 8;

FIG. 10 is a schematic view of the structure of the fixture;

FIG. 11 is a schematic view of the structure of the gas cap support device;

FIG. 12 is a side view of FIG. 11;

Fig. 13 is a top view of fig. 11.

Detailed Description

As shown in figures 1-3, the utility model discloses a porous metal coating sandblast spraying integrated device on metal pipe surface comprises sandblast section and the continuous device that is in the same line of spraying section.

The device is that sharp interval ground has set up a plurality of base tube supporting mechanism 2 and a base tube centre gripping operation actuating mechanism 3 on support track 1 on, wherein establish the track 7 of two parallels on support track 1, fixed a plurality of base tube supporting mechanism 2 that stretch to the straight line between two tracks on one side track at interval, there is the electronic dolly 8 of riding on two tracks 7, be equipped with driving motor 9 on the electronic dolly 8, driving gear of driving motor 9 meshes with the rack on the track 7 mutually, and be equipped with base tube connection fixture 10 at the front end of electronic dolly 8, base tube centre gripping operation actuating mechanism 3 has been constituted from this. The tail end of the support rail 1 is provided with a sand-blasting box 4, a spraying bench 5 is arranged behind the sand-blasting box 4 in parallel, the upper part of the sand-blasting box 4 is provided with a dust hood 28, and the upper part of the spraying bench 5 is provided with a smoke hood 33 which is connected with a smoke exhaust pipe 34 to a chimney 36 through an induced draft fan 35; the back of the spraying rack 5 is provided with a gas cap supporting device 60 which is in the same straight line with the base pipe supporting mechanism 2, supporting piers 6 are arranged below the base pipe supporting mechanism 2 and the gas cap supporting device 60, and the gas cap supporting device 60 and the base pipe supporting mechanism 2 are in the same straight line and at the same height.

The substrate tube support mechanism 2 and the air cap support device 60 form effective support for the substrate tube 16 which rotates and moves axially, reduce the radial run-out of the slender substrate tube 16 during rotation, and ensure the stable operation of the sand blasting and spraying units.

The driving gear of the driving motor 9 rotates to drive the electric trolley 8 to perform longitudinal feeding along the rack on the track 7, so that the electric trolley 8 longitudinally moves at the speed of 0.6-0.8 m/s. The rotary motor at the front end of the electric trolley 8 drives the base pipe connecting clamp 10 to rotate, and the base pipe connecting clamp 10 drives the base pipe 16 to rotate at the rotating speed of 60-100 rpm.

As shown in fig. 4-5, the middle of the sand-blasting box 4 arranged at the end of the track 7 is a sand-blasting chamber 25, a base pipe 16 passes through the sand-blasting chamber 25, the lower part of the sand-blasting box 4 is connected with a sand-feeding hopper 11, a sand suction pipe 12 at the bottom of the sand-feeding hopper 11 is connected to the root of a sand-blasting gun 13, a high-pressure air line 14 is connected to the tail of the sand-blasting gun 13, a sand-blasting nozzle 15 of the sand-blasting gun 13 is radially aligned with the axis of the base pipe 16 passing through the sand-blasting box 4, a dust hood 28 is arranged at the upper part of the sand-blasting box 4 and is connected with an air guide channel 29, and the high-pressure; the outlet of the air guide duct 29 is connected to a dust collector 70. The conical bottom of the sand grain feeding hopper 11 is connected with a fine sand groove 38 through a sand leakage sieve plate 37, the lower opening of the fine sand groove 38 is provided with a powder removing sieve plate 39, a vibrator 40 is arranged on a side seat of the powder removing sieve plate 39, and the side wall of the fine sand groove 38 is connected with a sand suction pipe 12 and a sand blasting gun 13 in a sand blasting box 4. Two sand blasting guns 13 are arranged in the sand blasting box 4, the sand blasting guns 13 are respectively provided with an adjusting bracket 41 fixed on the rear wall of the sand blasting box 4, and the front wall of the sand blasting box 4 is provided with a sand box door.

During operation, sand inside the sand box flows into the sand feeding hopper 11 through the sand distributing disc under the action of gravity, sand is sucked into the sand spraying gun 13 by means of negative pressure of the sand sucking pipe 12, is sprayed out at a certain speed after being mixed with compressed air, and oxide films on the surface of the base pipe 16 are removed through impact with the surface of the base pipe 16, meanwhile, a roughening effect is generated on the surface of the base pipe 16, a surface meeting requirements is provided for spraying, the sand in the sand spraying box 4 can be automatically recycled all the time before being consumed, and the phenomenon that the traditional sand box needs to be shut down to wash sand due to excessive accumulation of fine sand is avoided.

The 16 sandblast side supporting mechanism of parent tube is automatic control mechanism, and when electronic dolly 8 was close, go up spacing round and rotate certain angle, then construct at random and descend the take the altitude together, for the drive dolly through letting out the passageway, this kind of mechanism has replaced artifical upset supporting mechanism completely, has saved the manual work.

As shown in fig. 6-7, the upper part of the spraying bench 5 is provided with a base pipe 16 which transversely penetrates, more than one powder flame spray gun 17 is arranged on the spraying bench 5 in parallel, a spray gun moving trolley device is cancelled, the flame spray gun 17 is of a fixed structure and is always fixed in the spraying process, so that the alignment of the combustion flow center of the flame spray gun 17 and the axis of the base pipe 16 is effectively ensured, the spraying efficiency and the spraying layer quality are improved, the powder loss is increased due to the combustion flow eccentricity, and the proportion of the powder which vertically impacts the surface of the base pipe is reduced, so that the binding force of the coating is reduced; the smoke exhaust hood 33 is concentrated near the powder flame spray gun 17, the structure size is small, the power of a power part of the device is small, the energy is saved, and the efficiency is high; the powder flame spray gun 17 is divided into a bottoming spray gun 23 (forming a bottoming layer with higher bonding force on the surface of a base pipe) and at least one working layer spray gun 24 (forming a metal porous coating on the surface of the base pipe), a spray nozzle 22 of each powder flame spray gun 17 is aligned to the axis of the base pipe 16, the tail part of the powder flame spray gun 17 is connected with an acetylene gas pipe 18 and an oxygen pipe 19, a complicated spray gun gas line and a sliding following device of a power line of an electric control driving part are eliminated, the structure is simplified, the failure rate of the device is reduced, a metal powder tank 20 communicated with the interior of the spray gun is arranged on the side wall of the neck part of the powder flame spray gun 17, the neck part is a feeding section, the lower part of the feeding section is connected with a material mixed combustion section 21 till the flame spray nozzle 22 of the powder flame spray gun 17, and the bottom.

The fuel gas required by the powder flame spray gun 17 enters a flowmeter through the distribution of an oxygen distribution valve and an acetylene distribution valve and then enters the powder flame spray gun 17 through a gas transmission pipeline; after ignition, the powder flame spray gun 17 forms heating jet flow, a powder feeding valve and powder feeding gas of the powder flame spray gun 17 are opened, powder is sent out through a powder outlet hole of a flame spray nozzle 22 and is heated and accelerated to be sprayed to the surface of the base tube 16 through the jet flow, and the powder is continuously accumulated on the surface of the base tube 16 by mechanical hooking and micro-metallurgical combination to form a metal porous coating.

igniting a priming spray gun 23 at a non-working position, and quickly rotating to a working position (the fuel flow central line points to the axis of the base pipe 16) to spray a priming layer on the surface of the base pipe 16 after parameters are adjusted; then, a first working layer spray gun 24 and a second working layer spray gun 24 are sequentially adjusted at a non-working position, and when the bottoming layer part of the base pipe 16 arrives, the working layer spray guns 24 are quickly rotated to a working position (the fuel flow center line points to the axis of the base pipe); when the spraying end position of the base pipe 16 is reached, the powder flame spray gun 17 is lifted and closed in sequence; the outlet of the spraying rack 5 is provided with a gas cap support (as shown in figures 11-13), the surface of the sprayed metal pipe adopts a gas cap support structure, the gas cap support structure is in flexible contact and has no damage to the surface of a coating, the sprayed coating is greatly protected, the support distance of the spraying part is small (the support distance is only 0.8m), the radial runout of the base pipe 16 can be controlled within +/-1 mm, the uniformity of the coating is greatly improved, the spraying efficiency and the coating quality are improved, when the base pipe 16 rotates and axially moves, one end is a free end, no axial tensile stress exists, the circumferential torsional deformation is very small, the residual stress of the coating is very small, and the bonding force of the coating is high; the base pipe 16 stops axial feeding and rotation, the support gas cap stops gas supply, the upper limit is opened, the base pipe 16 after spraying is taken out from the support frame, and the spraying operation is completed.

The gas cap supporting device 60 is arranged behind the spraying platform 5 and is in the same line with the base tube supporting mechanism 2 as shown in fig. 11-13, and the gas cap supporting device 60 and the base tube supporting mechanism 2 are in the same line and at the same height.

the gas cap supporting device 60 is composed of a supporting rod 61, a supporting frame 62, a left supporting guide wheel II 63, a right supporting guide wheel II 64 and an upper limiting guide wheel II 66, the supporting frame 62 is transversely fixed on the supporting rod 61, two wheel frames II 67 are vertically fixed on the supporting frame 62 symmetrically on two sides of the supporting rod 61, the upper ends of the two lower wheel frames II 67 are respectively assembled with the left supporting guide wheel II 63 and the right supporting guide wheel II 64, a steering motor II 68 is vertically fixed on the right side of the supporting frame 62, an output shaft of the steering motor II 68 is provided with an upper limiting guide wheel supporting rod II 69 in a linkage manner, the upper limiting guide wheel II 66 is assembled at the transverse end of the upper limiting guide wheel supporting rod II 69, the left supporting guide wheel II 63, the right supporting guide wheel II 64 and the upper limiting guide wheel II 66 form a regular triangle and are wound around the guide wheel 16 with equal base pipe gaps, the left supporting guide wheel II 63, the right supporting guide wheel II 64 and the upper limiting guide wheel II 66 are, meanwhile, the axial lines of the wheel shafts of the left supporting guide wheel II 63, the right supporting guide wheel II 64 and the upper limiting guide wheel II 66 form 10-30 degrees in all directions with the axial line of the base pipe 16. Three gas nozzles 71 vertical to the axis of the base tube 16 are arranged on the transverse ends of the two wheel carriers II 67 and the upper limiting guide wheel support rod 69 II, and the gas nozzles 71 are matched with the tube wall of the base tube 16 at equal intervals. In this apparatus, the gas supply pipes 72 of the three gas nozzles 71 are connected to the same gas supply apparatus.

As shown in fig. 8-9, the middle base pipe supporting mechanism 2 of the device is composed of a cylinder 42, a cylinder fixing frame 43, a wheel seat 44, a left supporting guide wheel i 45, a right supporting guide wheel i 46 and an upper limiting guide wheel i 47, as shown in fig. 8-9, the cylinder 42 is vertically fixed on the cylinder fixing frame 43, the wheel base 44 is transversely fixed on the cylinder mandril 48 of the cylinder 42, two wheel carriers i 49 are vertically fixed on the wheel base 44 symmetrically at two sides of the cylinder mandril 48, the upper ends of the two wheel carriers I49 are respectively assembled with a left supporting guide wheel I45 and a right supporting guide wheel I46, a steering motor I50 is vertically fixed on the right side of the wheel seat 44, an output shaft of the steering motor I50 is provided with an upper limiting guide wheel supporting rod I51 in a linkage manner, an upper limiting guide wheel I47 is assembled at the transverse end of the upper limiting guide wheel supporting rod I51, and a left supporting guide wheel I45, a right supporting guide wheel I46 and the upper limiting guide wheel I47 are positioned on the periphery of the base pipe 16 and form an angle of 120 degrees with each other; the axial lines of the wheel shafts of the left supporting guide wheel I45, the right supporting guide wheel I46 and the upper limiting guide wheel I47 form 10-30 degrees in all directions; the upper limiting guide wheel I47 is a steering movable positioning mechanism driven by taking an upper limiting guide wheel support rod I51 as an axis. Meanwhile, the left supporting guide wheel I45, the right supporting guide wheel I46 and the upper limiting guide wheel I47 are all arranged on the same plane on the periphery of the base pipe 16, and the middle of the left supporting guide wheel I45, the right supporting guide wheel I46 and the upper limiting guide wheel I47 which form a triangle penetrates through the base pipe 16. With the tricycle stop gear for supporting mechanism, can effectively retrain the radial runout when the parent tube is rotatory to guarantee sandblast and spraying effect.

when the driving trolley approaches to the supporting mechanism, the upper limiting guide wheel I47 and the upper limiting guide wheel supporting rod I51 rotate for a certain angle under the driving of the steering motor I50, and then integrally move downwards under the driving of the air cylinder 42 along with the whole supporting frame, so that the driving trolley can pass through without obstacles.

As shown in fig. 10, the base pipe connecting clamp 10 of the device is composed of a casing seat 52, a pulling cone 53, a pull rod 54, an operating screw disc 55 and a shifting claw 56, as shown in fig. 10, the pulling cone 53 and the pull rod 54 are coaxial and integrated, the pull rod 54 penetrates through the casing seat 52 and is in clearance fit, an expansion joint 57 is sleeved between a shoulder on the inner side of the pulling cone 53 and the end head of the casing seat 52, the shifting claw 56 is symmetrically arranged at the tail end of the pull rod 54, the shifting claw 56 penetrates through a long hole 59 symmetrically arranged at the rear end of the casing seat 52, the outer opening of the operating screw disc 55 is abutted against the end face of the shifting claw 56, the pulling cone 53 is inserted into the end port of the base pipe 16, the pulling cone 53 is pulled by the pull rod 54, the expansion joint base pipe 57 on the rod is expanded with the inner wall of the base pipe 16, a flange 58 integrated with the pulling cone is arranged at the tail end of the. The device adopts the cooperation of the operating screw disk, the pull rod, the slide rod and the expansion joint to fix the base pipe, and has simple structure and difficult failure; when the base pipe rotates and moves axially, one end of the base pipe is a free end, no axial tensile stress exists, and circumferential torsional deformation is very small, so that the residual stress of the coating is very small, and the binding force of the coating is high.

The device is an integrated device for sand blasting and spraying, and can complete sand blasting and spraying operation at one time. After the base pipe 16 is clamped, the base pipe is driven by the electric trolley 8 to rotate and move axially along the rail 7, after the base pipe enters the sand box 4, under the action of sand grains sprayed by the sand blasting nozzle 15, an oxide film on the surface of the base pipe 16 is removed, meanwhile, the surface is roughened, next to the outlet of the sand box 4, the interval time from sand blasting to spraying of the base pipe 16 is short, the passivation of the sand blasting surface is small, the bonding force of a coating is effectively improved, after the base pipe directly enters a spraying position, a metal porous coating is formed on the surface of the base pipe 16 by the combined action of the fixed bottoming spray gun 23 and the working layer spray gun 24, secondary clamping during spraying is avoided, and the work efficiency; the base pipe 16 forming the coating part continues to rotate and axially move under the support of the gas cap bracket until the spraying is finished; the air pressure buffer tank 30 and the air compressor 31 supply air for the sand blasting gun 13 and the air top supporting device; the smoke exhaust hood 33 is connected with a smoke exhaust pipe 34 and is used for collecting and exhausting smoke generated by the powder flame spray gun 17 through an induced draft fan 35 to a chimney 36; compared with the older operating device, the structure size is reduced, and the occupied area is greatly reduced; the device is low in modification cost, when the super-long pipe is sprayed, only the support and the lengthened track are needed to be added, and other parts are unchanged; the device is suitable for coating operation of other kinds of coatings on the surface of the long and thin metal pipe by slightly modifying the device.

Claims

1. the utility model provides a porous metal coating sandblast spraying integrated device in metal pipe fitting surface, it comprises the continuous device in alignment of sandblast section and spraying section, characterized by support track (1) go up the sharp interval set up a plurality of basic tube supporting mechanism (2) in alignment and a basic tube centre gripping operation actuating mechanism (3), be equipped with sand-blasting box (4) at the end of support track (1), there is spraying rack (5) side by side behind sand-blasting box (4), it supports mound (6) to become the collinear a plurality of pulleys with basic tube supporting mechanism (2).

2. the metal pipe surface porous metal coating sand blasting and spraying integrated device as claimed in claim 1, characterized in that two parallel rails (7) are arranged on the support rail (1), a plurality of base pipe supporting mechanisms (2) extending to a straight line between the two rails are fixed on one side rail at intervals, an electric trolley (8) for riding is arranged on the two rails (7), a driving motor (9) is arranged on the electric trolley (8), a driving gear of the motor (9) is meshed with a rack on the rails (7), and a base pipe clamp connecting driving mechanism (10) is arranged at the front end of the electric trolley (8), thereby forming the base pipe clamping operation driving mechanism (3).

3. The integrated device for sand blasting and spraying porous metal coatings on the surfaces of metal pipes as claimed in claim 2, characterized in that the sand blasting box (4) arranged at the tail end of the rail (7) is formed by connecting a sand suction pipe (12) at the bottom of a sand feeding hopper (11) to the root of a sand blasting gun (13), connecting a high-pressure air line (14) to the tail of the sand blasting gun (13), and radially aligning a sand blasting nozzle (15) of the sand blasting gun (13) with an axis penetrating a base pipe (16) in the sand blasting box (4).

4. the integrated device for sand blasting and spraying porous metal coatings on the surfaces of metal pipes as claimed in claim 1, characterized in that the sand blasting box (4) is provided with a sand blasting chamber (25) at the middle part, a base pipe (16) passes through the sand blasting chamber (25), and the sand blasting nozzle (15) is aligned with the axis of the base pipe (16); the lower part of the sand-blasting box (4) is connected with a sand grain feeding hopper (11), and a sand suction pipe (12) at the bottom of the sand-blasting box is connected with a sand-blasting gun (13); the upper part of the sand-blasting box (4) is provided with a dust hood (28) and a connecting air guide channel (29); the high-pressure air line (14) at the tail end of the sand blasting nozzle (15) is connected to an air pressure buffer tank (30) and an air compressor (31).

5. The integrated device for sand blasting and spraying the porous metal coating on the surface of the metal pipe fitting as claimed in claim 1, wherein more than one powder flame spray gun (17) is arranged on the spraying stand (5) in parallel, the tail part of the powder flame spray gun (17) is connected with an acetylene gas pipe (18) and an oxygen pipe (19), a metal powder tank (20) communicated with the inside of the spray gun is arranged on the side wall of the neck section of the powder flame spray gun (17), the neck section is a feeding section, and the lower part of the feeding section is connected with a material mixing and burning section (21) and a flame spray nozzle (22) of the powder flame spray gun (17).

6. The integrated apparatus for sand blasting and spraying porous metal coatings on the surfaces of metal pipes as claimed in claim 5, characterized in that the powder flame spray guns (17) on the spraying stand (5) are divided into a backing spray gun (23) and at least one working layer spray gun (24), and the nozzle (22) of each powder flame spray gun (17) is aligned with the axis of the substrate pipe (16).

7. The integrated device for sand blasting and spraying porous metal coatings on the surfaces of metal pipes as claimed in claim 5, characterized in that the substrate pipe (16) transversely penetrates through the upper part of the spraying bench (5), the side-by-side backing spray gun (23) and the working layer spray gun (24) are fixed on the bottom bracket (32), and the flame nozzles (22) of the flame nozzles one by one are aligned with the axis of the substrate pipe (16); the upper part of the spraying rack (5) is provided with a smoke exhaust hood (33) which is connected with a smoke exhaust pipe (34) and is connected with a chimney (36) through a draught fan (35).

8. The metal pipe surface porous metal coating sand blasting and spraying integrated device as claimed in claim 1, wherein the base pipe supporting mechanism (2) is composed of a cylinder (42), a cylinder fixing frame (43), a wheel seat (44), a left supporting guide wheel I (45), a right supporting guide wheel I (46) and an upper limiting guide wheel I (47), the cylinder (42) is vertically fixed on the cylinder fixing frame (43), the wheel seat (44) is transversely fixed on a cylinder ejector rod (48) of the cylinder (42), two wheel frames I (49) are vertically fixed on the wheel seat (44) symmetrically on two sides of the cylinder ejector rod (48), the left supporting guide wheel I (45) and the right supporting guide wheel I (46) are respectively assembled at the upper ends of the two wheel frames I (49), a steering motor I (50) is vertically fixed on the right side of the wheel seat (44), an output shaft of the steering motor I (50) is linked with an upper limiting guide wheel supporting rod I (51), go up spacing guide pulley I (47) have been assembled to the horizontal end of spacing guide pulley bracing piece I (51), pass through parent tube (16) in the middle of supporting guide pulley I (45) in a left side, supporting guide pulley I (46) and the centre gripping of going up spacing guide pulley I (47) triangle-shaped.

9. The integrated device for sand blasting and spraying porous metal coatings on the surfaces of metal pipes as claimed in claim 2, wherein the base pipe connecting fixture (10) consists of a sleeve seat (52), a pulling cone (53), a pull rod (54), an operating screw disc (55) and a shifting claw (56), the pulling cone (53) and the pull rod (54) are coaxially integrated, the pull rod (54) penetrates through the sleeve seat (52) and is in clearance fit with each other, an expansion joint (57) is sleeved between a shoulder inside the pulling cone (53) and the end of the sleeve seat (52), the shifting claw (56) is symmetrically arranged at the tail end of the pull rod (54), the shifting claw (56) penetrates through a long strip hole (59) of the sleeve seat (52), the outer opening of the base pipe of the operating screw disc (55) is abutted against the end face of the shifting claw (56), the pulling cone (53) is inserted into the end of the pulling cone (16), and the pulling cone (53) and the expansion joint (57) on the rod are pulled by the pull rod (54) to be tightly expanded with the inner wall of the base pipe, the tail end of the sleeve seat (52) is provided with a flange (58) which is integrated with the sleeve seat, and the flange (58) is connected with the electric trolley (8).

10. The metal pipe surface porous metal coating sand blasting and spraying integrated device as claimed in claim 1, characterized in that an air cap supporting device (60) which is in the same line with the base pipe supporting mechanism (2) is arranged behind the spraying rack (5), the air cap supporting device (60) is composed of a supporting rod (61), a supporting frame (62), a left supporting guide wheel II (63), a right supporting guide wheel II (64) and an upper limiting guide wheel II (66), the supporting frame (62) is transversely fixed on the supporting rod (61), two sides of the supporting rod (61) are symmetrically and vertically fixed with two wheel frames II (67) on the supporting frame (62), the upper ends of the two lower wheel frames II (67) are respectively assembled with the left supporting guide wheel II (63) and the right supporting guide wheel II (64), a steering motor II (68) is vertically fixed on the right side of the supporting frame (62), the output shaft of the steering motor II (68) is linked with the upper limiting guide wheel II (69), an upper limiting guide wheel II (66) is assembled at the transverse end of the upper limiting guide wheel support rod II (69), and the left supporting guide wheel II (63), the right supporting guide wheel II (64) and the upper limiting guide wheel II (66) form a regular triangle and are wound on the base pipe (16) with equal gaps; three gas nozzles (71) vertical to the axis of the base pipe (16) are arranged at the transverse ends of the two wheel carriers II (67) and the upper limiting guide wheel support rod II (69), and the gas nozzles (71) are matched with the pipe wall of the base pipe (16) at equal intervals.