Anti-corrosion layer spraying equipment for inner wall surface of small-caliber steel pipe

Abstract

The utility model discloses anticorrosive coating spraying equipment for the inner wall surface of a small-caliber steel pipe, which has double functions of spraying an anticorrosive coating on the inner wall surface of the small-caliber steel pipe and polishing to remove welding seam and welding slag by arranging a polishing mechanism at one end part of a spraying rod, which is provided with a nozzle, and does not greatly increase the equipment transformation cost. Independent deburring or polishing equipment does not need to be additionally arranged, so that the cost of machining equipment for the inner wall surface of the small-caliber steel pipe and the storage space of the equipment are saved, and the economical efficiency is good; the overall structural design is simple, preparation and implementation feasibility is high, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to spraying equipment technical field, concretely relates to a kind of anticorrosive coating spraying equipment for small-bore steel pipe inner wall surface. BACKGROUND

[0002] Small-bore steel pipe inner wall anticorrosion spraying equipment is a kind of equipment specially used for the anticorrosion treatment of small-bore steel pipe inner wall.This kind of equipment is usually composed of spraying system, conveying system, control system and the like, wherein the spraying system is responsible for uniformly spraying anticorrosive paint on the inner wall of steel pipe, and generally adopts advanced technologies such as high-pressure airless spraying and electrostatic spraying to ensure that the paint can be closely attached to the inner wall surface of steel pipe to form a solid anticorrosive layer.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN218013595U discloses a kind of small-bore steel pipe inner wall anticorrosive coating spraying equipment, including base, the upper side of base is fixedly installed with mounting plate, adjusting slot is opened in the side of mounting plate away from base, penetrates mounting plate, two groups of movable rods are vertically movably installed in the inside of adjusting slot, two groups of connecting rods are symmetrically arranged in the inside of adjusting slot, and the side of two groups of movable rods is fixedly connected with two groups of connecting rods respectively.In the utility model, the steel pipe is placed in the inside of fixed band, the steel pipe is constrained by the sliding of fixed band in the inside of slot, the fixed band is fixed by screw tightening, the spraying rod is inserted into the inside of steel pipe by the sliding of sliding block in the inside of sliding slot, the anticorrosive material is transferred to the spray head by spraying rod, and the inside of steel pipe is sprayed by spray head, so that the steel pipe is fixed rectangularly, and the uneven spraying caused by unstable holding is avoided.However, the small-bore steel pipe inner wall anticorrosive coating spraying equipment only has the function of spraying liquid anticorrosive paint such as anticorrosive paint, and for small-bore steel pipe with low inner wall surface finish, such as welded pipe, deburring or polishing equipment needs to be additionally configured to polish the inner wall surface of small-bore steel pipe, thereby invisibly increasing the equipment investment required for small-bore steel pipe inner wall anticorrosive coating spraying operation, and deburring or polishing equipment needs to additionally occupy workshop space, leading to tense workshop environment and poor economy.Therefore, the utility model proposes a kind of anticorrosive coating spraying equipment for small-bore steel pipe inner wall surface to solve the above technical problems. SUMMARY

[0004] The utility model discloses a purpose at, overcome the defect in the prior art, provide a kind of anticorrosive coating spraying equipment for small-bore steel pipe inner wall, by being provided with polishing mechanism in the one end of the spray bar with nozzle, make spraying equipment have the double function of anticorrosive coating and polishing to remove weld slag to small-bore steel pipe inner wall spraying, and will not substantially increase equipment modification cost, need not additional configuration separate deburring or polishing equipment, help to save the processing equipment cost of small-bore steel pipe inner wall and equipment storage space, good economy;Overall structure design is simple, preparation implementation feasibility is high, and practicality is strong.

[0005] To realize the above-mentioned purpose, the technical scheme of the utility model is to design an anticorrosive coating spraying equipment for small-bore steel pipe inner wall, which comprises a horizontal base plate. A spraying assembly is arranged on the left end of the upper end surface of the horizontal base plate, and a pipeline clamping assembly is arranged on the right end of the upper end surface. The spraying assembly comprises a fixed plate, a movable vertical plate and a spraying rod. The movable vertical plate is slidably installed above the fixed plate, and a sliding guide assembly is arranged between the movable vertical plate and the fixed plate to enable the movable vertical plate to slide left and right along the upper end surface of the fixed plate. The spraying rod is vertically installed on the right side surface of the movable vertical plate. A plurality of nozzles are circumferentially and spaced apart on the pipe wall of the right end of the spraying rod. A polishing mechanism for polishing the small-bore steel pipe inner wall to remove weld slag or burrs is sealingly installed on the right end of the spraying rod.

[0006] The anticorrosive coating spraying equipment for small-bore steel pipe inner wall has the double function of anticorrosive coating and polishing to remove weld slag to small-bore steel pipe inner wall spraying, and will not substantially increase equipment modification cost, need not additional configuration separate deburring or polishing equipment, help to save the processing equipment cost of small-bore steel pipe inner wall and equipment storage space, good economy;Overall structure design is simple, preparation implementation feasibility is high, and practicality is strong.

[0007] Preferably, the right end of the spraying rod is provided with a polishing motor, and a rotating rod extending to the right side is fixedly arranged on the output shaft of the polishing motor. A brush head mounting plate is vertically fixedly arranged on the right end of the rotating rod. A plurality of brush head assemblies are detachably mounted on the outer circumferential side surface of the brush head mounting plate in a circumferential and spaced apart manner. The polishing motor, the rotating rod, the brush head mounting plate and the plurality of brush head assemblies constitute the polishing mechanism. The polishing mechanism has a simple structure, high preparation implementation feasibility, and ensures that the spraying equipment of the utility model can be smoothly prepared and implemented.

[0008] Further preferably, the brush head mounting plate is a circular plate body, a plurality of radial threaded blind holes are arranged on the outer circumferential side of the circular plate body in an annular and spaced manner, the brush head assembly comprises a bottom plate, a plurality of bristles are arranged on one side of the bottom plate, and a stud is vertically and fixedly arranged on the other side of the bottom plate, the plurality of brush head assemblies are fixedly and correspondingly screwed on the threaded blind holes on the outer circumferential side of the brush head mounting plate through the studs, and the outer side ends of the bristles on the plurality of brush head assemblies are located on the same circumference. The fixed mounting mode of the brush head assembly on the brush head mounting plate is simple and convenient to disassemble, so that appropriate brush head assemblies can be flexibly replaced according to different models of small-diameter steel pipes to meet different working requirements, and the flexible adaptability of the spraying equipment of the utility model is improved.

[0009] Preferably, the sliding guide assembly is provided with two groups, one group is located on the front side of the movable vertical plate, and the other group is located on the rear side of the movable vertical plate. The front and rear sides of the movable vertical plate are both slidably connected with the front and rear sides of the fixed plate through a group of sliding guide assemblies, so as to ensure the stability of the movable vertical plate when sliding on the fixed plate.

[0010] Further preferably, the front and rear edges of the movable vertical plate are respectively provided with threaded through holes penetrating the plate body, the front and rear sides of the fixed plate are respectively provided with grooves along the left-right direction, one bearing seat is respectively arranged at the two ends of each groove, a lead screw is arranged in each groove, the lead screw is threadedly and penetratingly arranged in the corresponding threaded through hole of the movable vertical plate, a position adjusting motor is fixedly arranged at the left end of the fixed plate, the left end of the lead screw is coaxially and fixedly connected with the output shaft of the position adjusting motor, and the groove, the lead screw, the bearing seat and the threaded through hole threadedly matched with the lead screw on the movable vertical plate on the front side or the rear side of the fixed plate constitute a group of sliding guide assemblies. The sliding guide assembly has a simple structure and high preparation feasibility, and the lead screw can be driven to rotate by starting the position adjusting motor through the control system, so as to realize the position adjustment of the movable vertical plate on the fixed plate.

[0011] Further preferably, the front and rear sides of the fixed plate are respectively provided with scale lines distributed along the left-right length direction. When the position of the movable vertical plate on the fixed plate is adjusted by the position adjusting motor, the position of the movable vertical plate on the fixed plate can be accurately judged by observing the scale lines, so as to improve the accuracy, convenience and efficiency of adjusting the insertion depth of the right end of the spraying rod in the small-diameter steel pipe.

[0012] Preferably, the pipe clamping assembly comprises two clamping units, each of which comprises a driving element and a clamping plate, the clamping plate is fixed on the driving end of the driving element, the side surface of the clamping plate away from the driving element is provided with an arc-shaped groove, and the right end of the upper end surface of the horizontal base plate is fixed with an n-shaped plate with the opening end facing the left and right sides; the driving element of one of the clamping units is fixed on the top of the n-shaped plate, and the driving element of the other clamping unit is correspondingly fixed on the horizontal base plate; and the arc-shaped grooves of the two clamping units are combined to form a storage cavity for placing and clamping the small-diameter steel pipe. The two clamping units of the pipe clamping assembly are designed ingeniously and reasonably, and have high preparation and implementation feasibility, so that the spraying equipment of the utility model can be prepared and implemented smoothly.

[0013] Further preferably, the driving element is a pneumatic cylinder.

[0014] Further preferably, the arc-shaped groove is provided with a flexible pad. When the two clamping units of the pipe clamping assembly clamp the small-diameter steel pipe placed in the storage cavity, the arc-shaped groove on the clamping plate contacts the outer side surface of the steel pipe through the flexible pad, so that the hard pressure on the outer wall of the small-diameter steel pipe caused by the rigid arc-shaped groove is effectively avoided.

[0015] Further preferably, the spraying rod is connected to the left end of the mounting sleeve, and the coating delivery pipeline is connected to the right end of the mounting sleeve.

[0016] The advantages and beneficial effects of the utility model are as follows:

[0017] 1. The anti-corrosion layer spraying equipment for the inner wall surface of a small-diameter steel pipe comprises a polishing mechanism arranged at the end of the spraying rod with a nozzle, so that the spraying equipment has the dual functions of spraying the anti-corrosion layer on the inner wall surface of the small-diameter steel pipe and polishing and removing the welding slag, without significantly increasing the equipment modification cost, without the need of additionally configuring a separate deburring or polishing equipment, and without the need of additional configuration of a separate deburring or polishing equipment, which helps to save the processing equipment cost and equipment storage space of the inner wall surface of the small-diameter steel pipe, and is economical; the overall structure is simple in design, high in preparation and implementation feasibility, and strong in practicability.

[0018] 2、The fixing and mounting mode of the brush head assembly on the brush head mounting plate is simple and convenient to disassemble, so that appropriate brush head assemblies can be flexibly replaced according to different types of small-diameter steel pipes to meet different work requirements, and the flexible adaptability of the spraying equipment of the utility model is improved.

[0019] 3、The front and rear sides of the movable vertical plate are slidably connected with the front and rear sides of the fixed plate through a set of sliding guide assemblies, so that the stability of the movable vertical plate when sliding on the fixed plate is ensured; the sliding guide assembly has simple structure and high preparation feasibility, and the position adjusting motor is started by the control system to drive the screw rod to rotate, so that the position adjustment of the movable vertical plate on the fixed plate is realized.

[0020] 4、When the position of the movable vertical plate on the fixed plate is adjusted by the position adjusting motor, the position of the movable vertical plate on the fixed plate can be accurately judged by observing the scale line, so that the accuracy, convenience and efficiency of adjusting the insertion depth of the right end of the spraying rod in the small-diameter steel pipe are improved.

[0021] 5、The two clamping units of the pipeline clamping assembly have ingenious and reasonable structure and high preparation feasibility, so that the spraying equipment of the utility model can be smoothly prepared and implemented; when the small-diameter steel pipe placed in the storage cavity is clamped by the two clamping units of the pipeline clamping assembly, the arc-shaped groove surface on the clamping plate is in contact with the outer side of the steel pipe through the flexible pad, so that the rigid arc-shaped groove surface effectively avoids hard pressure on the outer wall of the small-diameter steel pipe. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a front view of a corrosion protection layer spraying equipment for the inner wall surface of a small-diameter steel pipe;

[0023] Fig. 2 is a front view of a spraying assembly;

[0024] Fig. 3 is a perspective structural schematic view of a spraying rod;

[0025] Fig. 4 is a right view of a corrosion protection layer spraying equipment for the inner wall surface of a small-diameter steel pipe;

[0026] Fig. 5 is a perspective view of a clamping unit.

[0027] In the figure: 1. Movable vertical plate; 2. Spray rod; 3. Polishing motor; 4. Rotating rod; 5. Brush head mounting plate; 6. Brush head assembly; 7. Fixed plate; 8. Screw; 9. Bearing seat; 10. Position adjustment motor; 11. Paint delivery pipe; 12. Delivery pump; 13. Mounting sleeve; 14. Horizontal base plate; 15. N-type plate; 16. Clamping unit; 17. Storage cavity; 2-1. Nozzle; 6-1. Bottom plate; 6-2. Stud; 6-3. Bristles; 7-1. Groove; 7-2. Scale line; 16-1. Driving element; 16-2. Clamping plate; 16-3. Arc groove surface. DETAILED DESCRIPTION

[0028] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] Example

[0030] like Figs. 1-5 As shown, the utility model is an anti-corrosion layer spraying device for the inner wall surface of small-diameter steel pipes, comprising a horizontal base plate 14, a spraying assembly being provided at the left end of the upper end surface of the horizontal base plate 14, and a pipe clamping assembly being provided at the right end of the upper end surface, the spraying assembly comprising a fixed plate 7, a movable vertical plate 1 and a spraying rod 2, the movable vertical plate 1 being slidably installed above the fixed plate 7, and a sliding guide assembly being provided between the two, which enables the movable vertical plate 1 to slide left and right along the upper end surface of the fixed plate 7, the spraying rod 2 being vertically penetrated and installed on the right side surface of the movable vertical plate 1, a plurality of nozzles 2-1 being circumferentially spaced on the pipe wall at the right end of the spraying rod 2, the right end portion of the spraying rod 2 being sealed and being provided with a polishing mechanism for polishing the inner wall surface of the small-diameter steel pipe to remove welding slag or burrs.

[0031] Preferably, a polishing motor 3 is installed at the right end of the spray rod 2, and a rotating rod 4 extending to the right is fixed on the output shaft of the polishing motor 3, and a brush head mounting plate 5 is vertically fixed to the right end of the rotating rod 4. Several brush head assemblies 6 are detachably installed at annular intervals on the outer peripheral side of the brush head mounting plate 5. The polishing motor 3, rotating rod 4, brush head mounting plate 5 and several brush head assemblies 6 constitute the polishing mechanism.

[0032] Further preferably, the brush head mounting plate 5 is a circular plate, and a plurality of radial threaded blind holes are provided at annular intervals on the outer peripheral side surface thereof. The brush head assembly 6 includes a base plate 6-1, and bristles 6-3 are provided on one side surface of the base plate 6-1, and studs 6-2 are fixed vertically on the other side surface. The plurality of brush head assemblies 6 are fixedly mounted on the threaded blind holes on the outer peripheral side surface of the brush head mounting plate 5 by means of the studs 6-2, and the outer ends of the bristles 6-3 on the plurality of brush head assemblies 6 are located on the same circumference. In actual operation, the brush head assembly is a consumable part. The brush head assembly is screwed onto the threaded blind holes on the outer peripheral side surface of the brush head mounting plate by means of studs. It is easy to install or disassemble, and the operator can quickly complete the replacement of the brush head assembly without spending a lot of time on complicated disassembly and installation processes, thereby reducing equipment downtime and improving overall work efficiency. In addition, different types of brush head assemblies may be required for effective slag removal for different small-diameter steel pipe welds. The structure of this easy-to-replace brush head assembly enables the equipment to quickly replace the appropriate brush head assembly according to the specific slag removal needs, meet the needs of various working conditions, and further improve the flexibility and work efficiency of the spraying equipment of this utility model. By replacing the brush head assembly instead of replacing the brush head mounting plate, the service life of the brush head mounting plate can be greatly extended. Only the brush head assembly part is prone to wear, while other parts can continue to be used. This reduces the replacement frequency of the entire equipment, reduces material waste, reduces maintenance costs, and is economical and environmentally friendly. The new brush head assembly usually has better cleaning performance and can more effectively remove the welding slag remaining on the weld of the inner wall of the steel pipe. The structure that is easy to replace the brush head assembly ensures that the spraying equipment can easily replace the brush head assembly in good condition for slag removal, thereby improving the slag removal effect and providing a better foundation for subsequent anti-corrosion layer spraying work.

[0033] Preferably, the sliding guide assembly is provided in two groups, one group is located at the front side of the movable riser 1 , and the other group is located at the rear side of the movable riser 1 .

[0034] Further preferably, the lower ends of the front and rear side edges of the movable vertical plate 1 are respectively provided with threaded through holes penetrating the plate body, and the front and rear side surfaces of the fixed plate 7 are respectively provided with grooves 7-1 along the left and right directions, and a bearing seat 9 is installed at each end of the groove 7-1, and a screw rod 8 is installed inside the groove 7-1. The two ends of the screw rod 8 are respectively connected and fixed in the inner ring of the bearing of the bearing seat 9 located at the two ends of the groove 7-1, and the screw rod 8 is threadedly fitted into the corresponding threaded through holes on the movable vertical plate 1, and a position adjustment motor 10 is fixed at the left end portion of the fixed plate 7, and the left end portion of the screw rod 8 is coaxially fixedly connected to the output shaft of the position adjustment motor 10. The groove 7-1, the screw rod 8, the bearing seat 9 on the front or rear side of the fixed plate 7, and the threaded through hole on the movable vertical plate 1 that is threadedly fitted with the screw rod 8 constitute a group of the sliding guide components.

[0035] Further preferably, the front and rear side surfaces of the fixing plate 7 are respectively provided with scale lines 7 - 2 distributed along the left and right length directions.

[0036] Preferably, the pipe clamping assembly includes two clamping units 16, the clamping unit 16 includes a driving element 16-1 and a clamping plate 16-2, the clamping plate 16-2 is fixed on the driving end of the driving element 16-1, and the side of the clamping plate 16-2 facing away from the driving element 16-1 is set as an arc-shaped groove surface 16-3, and the right end of the upper end surface of the horizontal substrate 14 is fixed with an n-type plate 15 with open ends facing the left and right sides, the driving element 16-1 on one of the clamping units 16 is fixed on the top of the n-type plate 15, and the driving element 16-1 of the other clamping unit 16 is correspondingly fixed on the horizontal substrate 14, and the arc-shaped groove surfaces 16-3 on the two clamping units 16 are matched to form a storage cavity 17 for placing and clamping small-diameter steel pipes.

[0037] A further preferred technical solution is that the drive element 16-1 is a cylinder. The cylinder provides power to the clamping unit, achieving clamping and fixation of the steel pipe. By precisely controlling the pressure and stroke of the cylinder, it is possible to ensure that the storage cavity formed by the two clamping units can firmly clamp the steel pipe, preventing it from moving or rotating during the spraying process. This helps to improve spraying quality and work efficiency. Moreover, by controlling the upper and lower cylinders, the steel pipe can be set to different heights, achieving efficient spraying of the anti-corrosion layer on the inner wall of small-diameter steel pipes or efficient cleaning of weld slag at welds.

[0038] Further preferably, a flexible cushion layer is provided on the arc-shaped groove surface 16 - 3 .

[0039] Further preferably, it also includes a mounting sleeve 13 of a tapered tubular structure, and the outer peripheral side surface of the small-diameter end of the mounting sleeve 13 is provided with an external thread structure, and the mounting sleeve 13 is screwed through the external thread structure at the small-diameter end and installed in the threaded through hole on the movable vertical plate 1, and the inside of the mounting sleeve 13 is provided with internal threaded holes passing through its left and right end surfaces, the left end of the spray rod 2 is screwed and installed on the right end of the internal threaded hole of the mounting sleeve 13, and the left end of the internal threaded hole of the mounting sleeve 13 is screwed and installed with a paint delivery pipe 11, and the paint delivery pipe 11 is provided with a delivery pump 12.

[0040] (1) The utility model is a deburring or polishing principle of an anti-corrosion coating spraying device for the inner wall of a small-diameter steel pipe:

[0041] Step S1: first, the small caliber steel pipe is placed between the two arc grooves 16-3 of the two clamping units 16, the control system is started to drive the driving element 16-1 on the two clamping units 16, the piston rod on the driving element 16-1 starts to elongate, until the small caliber steel pipe is clamped in the storage cavity 17 formed by the two arc grooves 16-3 on the two clamping units 16, the piston rod of the driving element 16-1 stops elongation;

[0042] Step S2: the position adjusting motor 10 is started to rotate by the control system, the movable vertical plate 1 moves to the right side, until the brush assembly 6 on the spraying rod 2 moves to the position of the inner wall of the small caliber steel pipe needing polishing or deburring, the position adjusting motor 10 stops rotating;

[0043] Step S3: the polishing motor 3 is started after setting the polishing or deburring time by the control system, then the output shaft on the polishing motor 3 drives a plurality of brush head assemblies 6 to rotate through the rotating rod 14 and the brush head mounting plate 15, the bristles 6-3 on the brush head assembly 6 polish or deburr the position of the inner wall of the small caliber steel pipe needing polishing in the rotating process, and the polishing motor 3 stops moving after the set time;

[0044] Step S4: the position adjusting motor 10 is started to rotate reversely by the control system, the movable vertical plate 1 moves to the left side and exits the small caliber steel pipe, then the driving element 16-1 on the two clamping units 16 is reset by the control system, and the small caliber steel pipe is taken off, thereby completing the polishing or deburring process cycle of the inner wall of the small caliber steel pipe.

[0045] When a plurality of positions of the inner wall of the small caliber steel pipe need to be deburred or polished, steps S2 and S3 need to be repeated, and then the small caliber steel pipe is unloaded after the positions of the inner wall of the small caliber steel pipe needing polishing or deburring are processed.

[0046] (II) The anti-corrosion layer spraying principle of the anti-corrosion layer spraying equipment for the inner wall of the small caliber steel pipe is as follows:

[0047] Step T1: first, the small caliber steel pipe is placed between the two arc grooves 16-3 of the two clamping units 16, the control system is started to drive the driving element 16-1 on the two clamping units 16, the piston rod on the driving element 16-1 starts to elongate, until the small caliber steel pipe is clamped in the storage cavity 17 formed by the two arc grooves 16-3 on the two clamping units 16, the piston rod of the driving element 16-1 stops elongation;

[0048] Step T2: several brush assemblies 6 are disassembled, the position adjusting motor 10 is started to rotate by the control system, the movable vertical plate 1 moves to the right side, until the nozzle 2-1 on the spraying rod 2 moves to the position that the inner wall of the small-diameter steel pipe needs to be sprayed with the anticorrosive layer, the position adjusting motor 10 stops rotating;

[0049] Step T3: the feeding end of the coating conveying pipeline 11 is connected with the discharge port of the anticorrosive coating storage tank, the single spraying working time of the conveying pump 12 is set by the control system, and the conveying pump 12 is started, then the nozzle 2-1 on the spraying rod 2 sprays the anticorrosive paint on the inner wall of the small-diameter steel pipe, and after the set spraying time is reached, the conveying pump 12 stops running;

[0050] Step T4: the position adjusting motor 10 is started to rotate reversely by the control system, the movable vertical plate 1 moves to the left side and exits the small-diameter steel pipe, then the driving element 16-1 on the two clamping units 16 is reset by the control system, and the small-diameter steel pipe is taken off, so that the anticorrosive layer spraying cycle of the inner wall of the small-diameter steel pipe is completed.

[0051] When the inner wall of the small-diameter steel pipe needs to be sprayed with the anticorrosive layer at multiple positions, steps T2 and T3 need to be repeated, and after the inner wall of the small-diameter steel pipe is treated at all positions needing to be sprayed with the anticorrosive layer, the small-diameter steel pipe is unloaded through step T4.

[0052] The anticorrosive layer spraying equipment for the inner wall of the small-diameter steel pipe has the double functions of spraying the anticorrosive layer on the inner wall of the small-diameter steel pipe and removing the weld slag by polishing, and the equipment modification cost is not greatly increased, a separate deburring or polishing equipment does not need to be additionally configured, the machining equipment cost and the equipment storage space of the inner wall of the small-diameter steel pipe can be saved, and the economy is good.

[0053] The preferred embodiments of the utility model are described above, and it should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the technical principles of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

Claims

1. An anti-corrosion coating spraying device for the inner wall of a small-diameter steel pipe, comprising a horizontal base plate (14), a spraying assembly being provided at the left end of the upper end face of the horizontal base plate (14), and a pipe clamping assembly being provided at the right end of the upper end face, the spraying assembly comprising a fixed plate (7), a movable vertical plate (1) and a spraying rod (2), the movable vertical plate (1) being slidably mounted above the fixed plate (7), and a sliding guide assembly being provided between the movable vertical plate (1) and the spraying rod (2) for enabling the movable vertical plate (1) to slide left and right along the upper end face of the fixed plate (7), the spraying rod (2) being vertically penetrated and mounted on the right side face of the movable vertical plate (1), a plurality of nozzles (2-1) being circumferentially spaced apart on the pipe wall at the right end of the spraying rod (2), characterized in that: The right end of the spray rod (2) is sealed and is equipped with a polishing mechanism for polishing the inner wall surface of the small-diameter steel pipe to remove welding slag or burrs.

2. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 1, characterized in that: A polishing motor (3) is installed at the right end of the spraying rod (2), and a rotating rod (4) extending to the right side is fixed on the output shaft of the polishing motor (3), a brush head mounting plate (5) is vertically fixed to the right end of the rotating rod (4), and a plurality of brush head assemblies (6) are detachably installed on the outer peripheral side surface of the brush head mounting plate (5) at annular intervals. The polishing motor (3), the rotating rod (4), the brush head mounting plate (5) and the plurality of brush head assemblies (6) constitute the polishing mechanism.

3. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 2, characterized in that: The brush head mounting plate (5) is a circular plate body, and a plurality of radial threaded blind holes are provided at annular intervals on the outer peripheral side surface thereof. The brush head assembly (6) comprises a base plate (6-1), and bristles (6-3) are provided on one side surface of the base plate (6-1), and studs (6-2) are vertically fixed on the other side surface. The plurality of brush head assemblies (6) are fixedly mounted on the threaded blind holes on the outer peripheral side surface of the brush head mounting plate (5) by means of the studs (6-2) in a one-to-one corresponding manner, and the outer ends of the bristles (6-3) on the plurality of brush head assemblies (6) are located on the same circumference.

4. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 1, characterized in that: The sliding guide assembly is provided with two groups, one group is located at the front side of the movable vertical plate (1), and the other group is located at the rear side of the movable vertical plate (1).

5. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 4, characterized in that: The lower ends of the front and rear side edges of the movable vertical plate (1) are respectively provided with threaded through holes that penetrate the plate body, and the front and rear side surfaces of the fixed plate (7) are respectively provided with grooves (7-1) along the left and right directions, and a bearing seat (9) is correspondingly installed at each end of the groove (7-1), and a screw rod (8) is installed inside the groove (7-1), and the two ends of the screw rod (8) are respectively connected and fixed in the bearing inner ring of the bearing seat (9) located at the two ends of the groove (7-1), and the screw rod (8) is threadedly connected to the corresponding threaded through hole on the movable vertical plate (1), and a position adjustment motor (10) is fixed at the left end of the fixed plate (7), and the left end of the screw rod (8) is coaxially fixedly connected with the output shaft of the position adjustment motor (10), and the groove (7-1) on the front side or rear side of the fixed plate (7), the screw rod (8), the bearing seat (9) and the threaded through hole on the movable vertical plate (1) that is threadedly matched with the screw rod (8) constitute a group of the sliding guide components.

6. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 5, characterized in that: The front and rear side surfaces of the fixing plate (7) are respectively provided with scale lines (7-2) distributed along the left and right length directions.

7. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 1, characterized in that: The pipe clamping assembly includes two clamping units (16), each of which includes a driving element (16-1) and a clamping plate (16-2). The clamping plate (16-2) is fixed on the driving end of the driving element (16-1), and a side of the clamping plate (16-2) facing away from the driving element (16-1) is set as an arc-shaped groove surface (16-3). The right end of the upper end surface of the horizontal substrate (14) is fixed with an n-type plate (15) with an open end facing the left and right sides. The driving element (16-1) on one clamping unit (16) is fixed on the top of the n-type plate (15), and the driving element (16-1) of the other clamping unit (16) is correspondingly fixed on the horizontal substrate (14). The arc-shaped groove surfaces (16-3) on the two clamping units (16) are matched to form a storage cavity (17) for placing and clamping small-diameter steel pipes.

8. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 7, characterized in that: The driving element (16-1) is a cylinder.

9. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to claim 8, characterized in that: A flexible cushion layer is provided on the arc-shaped groove surface (16-3).

10. The anti-corrosion coating spraying equipment for the inner wall of a small-diameter steel pipe according to any one of claims 1 to 9, characterized in that: It also includes a mounting sleeve (13) with a tapered tubular structure, and an external thread structure is provided on the outer peripheral side surface of the small-diameter end of the mounting sleeve (13). The mounting sleeve (13) is screwed through the threaded through hole on the movable vertical plate (1) through the external thread structure at the small-diameter end, and the interior of the mounting sleeve (13) is provided with internal thread holes passing through the left and right end surfaces thereof. The left end of the spray rod (2) is screwed and installed on the right end of the internal thread hole of the mounting sleeve (13), and the left end of the internal thread hole of the mounting sleeve (13) is screwed and installed with a paint delivery pipe (11), and a delivery pump (12) is provided on the paint delivery pipe (11).

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