A spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe

Abstract

A spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe relates to the technical field of spraying equipment, and includes a spraying operation table, which is a horizontally arranged square table, and is respectively provided with an inner spraying component, an outer spraying component, an inner clamping component, an outer clamping component and a flip drying component; the upper surface of the spraying operation table is respectively provided with a first sliding opening and a second sliding opening extending laterally, a first fixed plate is provided on the outer side of the first sliding opening, and a second fixed plate is provided on the outer side of the second sliding opening, and the first fixed plate and the second fixed plate are respectively fixedly connected to two opposite lateral side end faces of the spraying operation table. The present invention solves the problems of inconvenient transfer and clamping, limited spraying range and poor drying effect when the spraying equipment in the traditional technology coats the inner and outer surfaces of the composite steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of spraying equipment, and in particular to a spraying device used for anti-corrosion and wear-resistant treatment of inner and outer surfaces of a composite steel pipe. Background Art

[0002] Composite steel pipe is a pipe based on the composite structure of metal and thermoplastic plastic. The synthesis mostly adopts the process of straight seam welded pipe, spiral welded pipe or seamless steel pipe with polyethylene or epoxy resin heated spraying and dipping inside and outside. The plastic-coated composite pipe has the strength of steel pipe and good corrosion resistance, wear resistance and low fluid resistance. Therefore, it is widely used in many technical fields such as fire water supply, sewage treatment, hot water system, petrochemical industry, etc.

[0003] Due to the special shape of the composite steel pipe, it is often difficult to achieve uniform and seamless spraying of the inner and outer surfaces of the composite steel pipe by manual operation, and the spraying efficiency is low. Therefore, in the actual production and processing process, mechanical spraying equipment is often used to achieve anti-corrosion and wear-resistant spraying of the inner and outer surfaces of the composite steel pipe. When using traditional spraying equipment to spray the inner and outer surfaces of the composite steel pipe, a series of new problems will arise, including:

[0004] 1. Inconvenient switching clamping. Specifically, the composite steel pipe has two spraying parts, the inner and outer walls. When spraying different parts, it is necessary to select a suitable position for spraying clamping to avoid interference and obstruction of the spraying process caused by the clamping mechanism and the clamping part; further, in the process of continuous inner and outer spraying, it is necessary to switch the clamping method.

[0005] 2. The spraying range is limited. Specifically, the inner and outer surfaces of the composite steel pipe to be sprayed are both arc-shaped surfaces. Therefore, when spraying the outer peripheral surface of the composite steel pipe, it is easy for the spraying to fail to fully cover the surface, resulting in a dead angle for spraying. When spraying the inner peripheral surface, the paint sprayed on the circumferential inner wall of the composite steel pipe is prone to flow due to the influence of gravity, resulting in uneven distribution of the paint.

[0006] 3. Untimely drying affects the overall spraying effect. Specifically, since the internal and external spraying process includes the necessary clamping switching link, in order to avoid affecting the subsequent spraying, the sprayed surface must be used as the clamping part during the clamping switching. From this perspective, drying must also be carried out before the clamping switching; further, due to the different internal and external spraying parts, traditional drying methods often cannot achieve accurate drying of the inside and outside of the composite steel pipe.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0008] In view of the defects in the prior art, the present invention provides a spray device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of composite steel pipes, which is used to solve the problems of inconvenient transfer and clamping, limited spraying range and poor drying effect when the spray equipment in traditional technology coats the inner and outer surfaces of composite steel pipes.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe comprises a spraying operating table which is a horizontally arranged square table on which an inner spraying component, an outer spraying component, an inner clamping component, an outer clamping component and a flip drying component are respectively arranged.

[0011] As an optimized solution, the upper surface of the spraying operation table is respectively provided with a first sliding opening and a second sliding opening extending laterally, a first fixed plate is provided on the outer side of the first sliding opening, and a second fixed plate is provided on the outer side of the second sliding opening, and the first fixed plate and the second fixed plate are respectively fixedly connected to two opposite lateral side end faces of the spraying operation table.

[0012] As an optimized solution, the internal clamping assembly and the external spraying assembly are respectively arranged on both sides of the first sliding opening.

[0013] As an optimized solution, the internal clamping assembly includes a sliding vertical plate, the lower end of the sliding vertical plate is slidably mounted in the second sliding opening, a steering drive motor is fixedly connected to the longitudinal outer end surface of the sliding vertical plate, the output shaft end of the steering drive motor passes through the sliding vertical plate and is fixedly connected to an intermediate turntable, two symmetrical displacement telescopic cylinders are fixedly connected to the outer end surface of the intermediate turntable along the longitudinal direction, and an L-shaped clamping plate is fixedly connected to the telescopic end of the displacement telescopic cylinder.

[0014] As an optimized solution, a rotating drive motor is fixedly connected to the lateral outer end face of the L-shaped clamping plate, the end of the output shaft of the rotating drive motor passes through the L-shaped clamping plate and is fixedly connected to a square positioning seat, and each side end face of the square positioning seat is respectively fixedly connected to a clamping telescopic cylinder, and the telescopic end of each clamping telescopic cylinder is respectively fixedly connected to a supporting positioning plate.

[0015] As an optimized solution, the external spraying assembly includes a vertically arranged movable side panel, and the movable side panel is longitudinally telescopically arranged on the outer side of the end surface of the spraying operating table. A first paint box is fixedly connected to the longitudinal inner wall of the movable side panel near the upper part, and a U-shaped adjustment plate is telescopically provided on the outer side of the first paint box. A feeding transfer seat is fixedly connected to the middle part of the longitudinal inner wall of the U-shaped adjustment plate, and a telescopic spring tube is provided between the first paint box and the feeding transfer seat.

[0016] As an optimized solution, a paint delivery pump is fixedly connected to the upper surface of the first paint box, a horizontal spray cylinder is fixed on the longitudinal outer wall of the U-shaped adjustment plate, a plurality of high-pressure nozzles are fixedly connected laterally to the outer peripheral wall of the spray cylinder, and a delivery pipe is fixedly connected to each lateral side end face of the feed transfer seat, and the ends of the two delivery pipes are respectively fixedly connected to the side end faces of the spray cylinder.

[0017] As an optimized solution, the inner spraying assembly includes a support vertical plate, which is fixedly connected to one side of the upper surface of the spraying operation table along the longitudinal direction and is connected to the first sliding port.

[0018] As an optimized solution, an inner spray pipe is provided above the first sliding port. The inner spray pipe is a semi-closed pipe with a single-side opening. The open end of the inner spray pipe is fixed to the transverse inner wall of the supporting vertical plate. A plurality of circumferentially symmetrical electric nozzles are fixed to the inner spray pipe at equal intervals along the axial direction.

[0019] As an optimized solution, a sliding drive motor is fixedly connected to the outer end face of the second fixed plate, the end of the output shaft of the sliding drive motor passes through the second fixed plate and is fixedly connected to a laterally extending threaded screw, and the end of the threaded screw is rotatably supported on the lateral inner wall of the second sliding opening.

[0020] As an optimized solution, a telescopic connecting port is opened on the longitudinal end face of the spraying operating table corresponding to the movable side panel, and two symmetrical hydraulic telescopic cylinders are fixedly connected to the longitudinal inner wall of the telescopic connecting port, and the telescopic ends of the hydraulic telescopic cylinders are fixedly connected to the longitudinal inner wall of the movable side panel near the lower end.

[0021] As an optimized solution, two symmetrical electrically-controlled telescopic cylinders are fixedly connected to the longitudinal inner wall of the movable side plate, and the telescopic ends of the electrically-controlled telescopic cylinders are fixedly connected to the longitudinal inner wall of the U-shaped adjustment plate.

[0022] As an optimized solution, the external clamping assembly includes a sliding base that is slidably mounted in the first sliding opening, and the sliding base is a horizontally arranged square seat. Two symmetrical driving threaded rods are rotatably arranged in the first sliding opening, and one end of each driving threaded rod is rotatably supported on the transverse inner wall of the first sliding opening, and the other end is rotatably supported on the inner wall of the first fixed plate. The two driving threaded rods respectively pass through and are threadedly connected to the sliding base.

[0023] As an optimized solution, a longitudinally extending clamping support plate is fixedly connected to the upper surface of the sliding base, and a circular rotating clamping port is opened on the clamping support plate. A clamping cylinder is rotatably arranged in the rotating clamping port, and both ends of the clamping cylinder respectively pass through the rotating clamping port and extend to the outside thereof. A plurality of centrally symmetrical positioning clamps are telescopically arranged on the inner circumferential wall of the clamping cylinder.

[0024] As an optimized solution, a stepper motor is fixedly connected to the lateral outer end surface of the sliding base, a rotating connecting port is provided on one side of the upper surface of the sliding base, the end of the output shaft of the stepper motor extends into the rotating connecting port and is fixedly connected to a driving wheel, a card-mounting limit groove is provided on the outer peripheral wall of the clamping cylinder, and an intermediate transmission wheel is rotatably provided on the lateral outer wall of the card-mounting support plate near the lower part, the upper end of the intermediate transmission wheel is rotatably abutted against the card-mounting limit groove, and the lower end is rotatably abutted against the driving wheel.

[0025] As an optimized solution, a transmission drive motor is fixedly connected to the transverse outer wall of the first fixed plate, the end of the output shaft of the transmission drive motor passes through the first fixed plate and is fixedly connected to the transmission main wheel, and a transmission secondary wheel is fixedly connected to the outer peripheral wall near the end of each driving threaded rod, and the transmission secondary wheel and the transmission main wheel are meshed for transmission.

[0026] As an optimized solution, a second paint box is fixedly connected to the transverse outer end face of the spraying operation table, a booster feed pump is fixedly connected to the longitudinal outer wall of the second paint box, a feeding pipe is fixedly connected to the center of the upper surface of the second paint box, the feeding pipe is connected to the second paint box, and the end of the feeding pipe passes through the supporting vertical plate and is connected to the inner spray pipe.

[0027] As an optimized solution, the tumbling and drying assembly is arranged between the inner spraying assembly and the outer spraying assembly.

[0028] As an optimized solution, the flip drying assembly includes a fixed side panel fixedly connected to the upper surface of the spraying operation table, the fixed side panel is arranged on one side of the first sliding opening, and a flip driving motor is fixedly connected to the outer side wall of the fixed side panel close to the upper part.

[0029] As an optimized solution, the end of the output shaft of the flip drive motor passes through the fixed side panel and is fixedly connected to a square drying box. The drying box is arranged opposite to the first sliding opening. A fan drive motor is fixedly connected to the middle of the upper surface of the drying box. The end of the output shaft of the fan drive motor passes through the drying box and is fixedly connected to the fan blades.

[0030] As an optimized solution, a plurality of centrally symmetrical air inlets are provided on the upper surface of the drying box, a horizontal annular electric heating tube is provided between the fan blades and the air inlet, and a power supply seat is fixedly connected to each lateral outer end surface of the drying box, and the power supply seat is connected to the annular electric heating tube for power supply.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The external clamping assembly for internal spraying clamping of the composite steel pipe and the internal clamping assembly for external spraying clamping of the composite steel pipe provided in the present invention avoid the influence of the clamping mechanism on the spraying process by selecting the inner and outer peripheral surfaces that do not participate in the real-time spraying as the clamping parts; further, through the linkage cooperation of the external clamping assembly and the internal clamping assembly, the continuous transfer of the composite steel pipe between the two groups of clamping assemblies can be realized, thereby realizing the clamping switching of different spraying processes.

[0033] In the present invention, an external spraying component for spraying the outer circumference of the composite steel pipe and an internal clamping component for spraying the inner circumference of the composite steel pipe are respectively provided, wherein the external spraying component includes a laterally extending spray cylinder, and a plurality of high-pressure nozzles are arranged side by side on the outer circumferential wall of the spray cylinder close to the composite steel pipe. The high-pressure nozzle can spray the paint delivered to the nozzle cylinder laterally, thereby spraying the outer surface of the composite steel pipe. Furthermore, by controlling the extension and contraction of the electric-controlled telescopic cylinder, the U-shaped adjustment plate can be driven to move to adjust the external spraying distance; the internal spraying component includes a horizontally arranged inner spraying pipe, and a plurality of electric nozzles are arranged on the inner spraying pipe along the circumferential direction and the axial direction, thereby expanding the spraying range.

[0034] The external clamping assembly provided in the present invention includes a sliding base, and the sliding base can slide along the first sliding opening under the control of the transmission drive motor to adjust the clamping position and perform clamping switching; a clamping support plate is fixedly connected to the upper surface of the sliding base, and a rotating clamping opening is opened on the clamping support plate, and a clamping cylinder is rotatably provided in the rotating clamping opening, and a positioning clamping plate is telescopically provided in the clamping cylinder, and the outer peripheral wall of the composite steel pipe can be clamped and positioned during the internal spraying process through the positioning clamping plate. Furthermore, the clamping cylinder can rotate around the axis under the drive of the stepping motor, thereby driving the composite steel pipe clamped in the clamping cylinder to rotate, so as to change the position of the composite steel pipe relative to the inner spraying pipe during the internal spraying process in real time, so as to avoid the aggregation of paint caused by the influence of gravity, resulting in uneven distribution of paint.

[0035] The internal clamping assembly provided in the present invention includes a sliding vertical plate, which can slide horizontally along the second sliding opening under the control of the sliding drive motor to adjust the clamping position and prepare for clamping switching; a steering drive motor is fixedly connected to the outer wall of the sliding vertical plate, and an intermediate turntable is fixedly connected to the end of the output shaft of the steering drive motor, and an L-shaped clamping plate is telescopically provided on the intermediate turntable, and a rotating drive motor is fixedly connected to the transverse outer wall of the L-shaped clamping plate, and a square positioning seat is fixedly connected to the end of the output shaft of the rotating drive motor, and a plurality of supporting positioning plates are longitudinally telescopically provided on the upper edge of the side end surface of the square positioning seat, and the supporting positioning plate can support and clamp the composite steel pipe from the inside, and further, by rotating the rotating drive motor, the composite steel pipe in the clamping can be driven to rotate around the axis, thereby changing the external spraying position in real time; in addition, when the composite steel pipe completes external spraying and is transferred to the external clamping assembly, the steering drive motor drives the L-shaped clamping plate to rotate to the vertical direction, thereby avoiding the composite steel pipe in the subsequent internal spraying process.

[0036] The flip drying assembly provided in the present invention comprises a drying box, in which an annular electric heating tube, a fan drive motor and fan blades are arranged. Air can be drawn in through the air inlet by the rotation of the fan blades, and blown out from the open end of the drying box after being heated by the annular electric heating tube, thereby realizing the drying process. Furthermore, the drying box is rotatably mounted on a fixed side panel as a whole, and can be flipped around an axis under the drive of the flip drive motor, so that the drying box can be switched between a horizontal state and a vertical state. When the drying box is in a horizontal state, the coating on the outer peripheral surface of the composite steel pipe can be dried. When the drying box is flipped to a vertical state, the open end of the drying box is opposite to the open end of the composite steel pipe, so that hot air can be directly blown into the composite steel pipe to dry the internal coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0038] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction;

[0039] Figure 2 It is a schematic cross-sectional view of the internal structure of the external clamping component and the internal spraying component in the present invention in the main viewing direction;

[0040] Figure 3 It is a schematic cross-sectional view of the internal structure of the internal clamping assembly in the present invention in the main viewing direction;

[0041] Figure 4It is a schematic cross-sectional view of the internal structure of the external clamping component and the external spraying component in the present invention in the side view direction;

[0042] Figure 5 It is a schematic cross-sectional view of the internal structure of the internal clamping component and the turning and drying component in the present invention in the side view direction;

[0043] Figure 6 It is a schematic diagram of the external overall structure of the present invention in a top view;

[0044] Figure 7 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction.

[0045] In the figure: 1-spraying operation table, 2-first sliding opening, 3-second sliding opening, 4-first fixed plate, 5-second fixed plate, 6-sliding base, 7-driving threaded rod, 8-clamping support plate, 9-rotating clamping opening, 10-clamping cylinder, 11-positioning clamping plate, 12-stepping motor, 13-rotating connecting port, 14-active rotating wheel, 15-clamping limit groove, 16-intermediate transmission wheel, 17-transmission drive motor, 18-transmission main wheel, 19-transmission secondary wheel, 20-sliding vertical plate, 21-sliding drive motor, 22-threaded screw, 23-steering drive motor, 24-intermediate turntable, 25-displacement telescopic cylinder, 26-L-type clamping plate, 27-rotation drive motor, 28-square positioning Seat, 29-clamping telescopic cylinder, 30-top support positioning plate, 31-movable side plate, 32-telescopic connecting port, 33-hydraulic telescopic cylinder, 34-first paint box, 35-U-shaped adjustment plate, 36-electrically controlled telescopic cylinder, 37-feeding transfer seat, 38-telescopic spring tube, 39-paint delivery pump, 40-spraying column, 41-high pressure nozzle, 42-delivery pipe, 43-support vertical plate, 44-inner spraying pipe, 45-electric nozzle, 46-second paint box, 47-boosting feed pump, 48-feeding pipe, 49-fixed side plate, 50-flip drive motor, 51-drying box, 52-fan drive motor, 53-fan blades, 54-air inlet, 55-annular electric heating pipe, 56-power supply seat. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0047] like Figures 1 to 7 As shown, a spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe comprises a spraying operating table 1, which is a horizontally arranged square table, and is respectively provided with an inner spraying component, an outer spraying component, an inner clamping component, an outer clamping component and a flip drying component.

[0048] The upper surface of the spraying operation table 1 is respectively provided with a first sliding opening 2 and a second sliding opening 3 extending laterally. The first sliding opening 2 and the second sliding opening 3 are arranged in parallel. The opening ends of the first sliding opening 2 and the second sliding opening 3 are respectively connected to the two lateral outer end surfaces of the spraying operation table 1. A first fixed plate 4 is provided on the outer side of the first sliding opening 2, and a second fixed plate 5 is provided on the outer side of the second sliding opening 3. The first fixed plate 4 and the second fixed plate 5 are respectively fixedly connected to the two opposite lateral side end surfaces of the spraying operation table 1.

[0049] The external clamping assembly includes a sliding base 6 that is slidably mounted in the first sliding opening 2. The sliding base 6 is a horizontally arranged square seat. Two symmetrical driving threaded rods 7 are rotatably arranged in the first sliding opening 2. One end of each driving threaded rod 7 is rotatably supported on the lateral inner wall of the first sliding opening 2, and the other end is rotatably supported on the inner wall of the first fixed plate 4. The two driving threaded rods 7 respectively pass through and are threadedly connected to the sliding base 6.

[0050] A longitudinally extending clamping support plate 8 is fixedly connected to the upper surface of the sliding base 6, and a circular rotating clamping port 9 is opened on the clamping support plate 8. A clamping cylinder 10 is rotatably arranged in the rotating clamping port 9. Both ends of the clamping cylinder 10 respectively pass through the rotating clamping port 9 and extend to the outside thereof. A plurality of centrally symmetrical positioning clamps 11 are telescopically arranged on the inner circumferential wall of the clamping cylinder 10.

[0051] A stepper motor 12 is fixedly connected to the lateral outer end surface of the sliding base 6, a rotating connecting port 13 is provided on one side of the upper surface of the sliding base 6, the output shaft end of the stepper motor 12 extends into the rotating connecting port 13 and is fixedly connected to a driving wheel 14, a card-mounting limit groove 15 is provided on the outer peripheral wall of the clamping cylinder 10, and an intermediate transmission wheel 16 is rotatably provided on the lateral outer wall near the lower part of the card-mounted support plate 8, the upper end of the intermediate transmission wheel 16 is rotatably abutted against the card-mounting limit groove 15, and the lower end is rotatably abutted against the driving wheel 14.

[0052] A transmission drive motor 17 is fixedly connected to the transverse outer wall of the first fixed plate 4. The end of the output shaft of the transmission drive motor 17 passes through the first fixed plate 4 and is fixedly connected to a transmission main wheel 18. A transmission secondary wheel 19 is fixedly connected to the outer peripheral wall near the end of each driving threaded rod 7. The transmission secondary wheel 19 and the transmission main wheel 18 are meshed for transmission.

[0053] The internal clamping assembly and the external spraying assembly are respectively arranged on both sides of the first sliding opening 2 .

[0054] The internal clamping assembly includes a sliding vertical plate 20, the lower end of the sliding vertical plate 20 is slidably mounted in the second sliding opening 3, a sliding drive motor 21 is fixedly connected to the outer end surface of the second fixed plate 5, the end of the output shaft of the sliding drive motor 21 passes through the second fixed plate 5 and is fixedly connected to a transversely extending threaded screw 22, and the end of the threaded screw 22 is rotatably supported on the transverse inner wall of the second sliding opening 3.

[0055] A steering drive motor 23 is fixedly connected to the longitudinal outer end face of the sliding vertical plate 20, and the end of the output shaft of the steering drive motor 23 passes through the sliding vertical plate 20 and is fixedly connected to the intermediate turntable 24. Two symmetrical displacement telescopic cylinders 25 are fixedly connected to the outer end face of the intermediate turntable 24 along the longitudinal direction, and the telescopic ends of the displacement telescopic cylinders 25 are fixedly connected to an L-shaped clamping plate 26. A rotation drive motor 27 is fixedly connected to the transverse outer end face of the L-shaped clamping plate 26, and the end of the output shaft of the rotation drive motor 27 passes through the L-shaped clamping plate 26 and is fixedly connected to a square positioning seat 28. A clamping telescopic cylinder 29 is respectively fixedly connected to each side end face of the square positioning seat 28, and the telescopic ends of each clamping telescopic cylinder 29 are respectively fixedly connected to a supporting positioning plate 30.

[0056] The external spraying assembly includes a vertically arranged movable side panel 31, which is longitudinally arranged on the outer side of the end surface of the spraying operating table 1. A telescopic connecting opening 32 is opened on the longitudinal end surface of the spraying operating table 1 corresponding to the movable side panel 31. Two symmetrical hydraulic telescopic cylinders 33 are fixedly connected to the longitudinal inner wall of the telescopic connecting opening 32. The telescopic ends of the hydraulic telescopic cylinders 33 are fixedly connected to the longitudinal inner wall of the movable side panel 31 near the lower end.

[0057] A first paint box 34 is fixedly connected to the longitudinal inner wall of the movable side plate 31 near the upper part, a U-shaped adjusting plate 35 is telescopically provided on the outer side of the first paint box 34, two symmetrical electrically-controlled telescopic cylinders 36 are fixedly connected to the longitudinal inner wall of the movable side plate 31, the telescopic ends of the electrically-controlled telescopic cylinders 36 are fixedly connected to the longitudinal inner wall of the U-shaped adjusting plate 35, a feeding transfer seat 37 is fixedly connected to the middle part of the longitudinal inner wall of the U-shaped adjusting plate 35, a telescopic spring tube 38 is provided between the first paint box 34 and the feeding transfer seat 37, one end of the telescopic spring tube 38 is fixedly connected to the first paint box 34, and the other end of the telescopic spring tube 38 is fixedly connected to the feeding transfer seat 37.

[0058] A paint delivery pump 39 is fixedly connected to the upper surface of the first paint box 34, a horizontal spray column 40 is fixed on the longitudinal outer wall of the U-shaped adjustment plate 35, a plurality of high-pressure nozzles 41 are fixedly connected to the outer peripheral wall of the spray column 40 in the transverse direction, and a delivery pipe 42 is fixedly connected to each transverse side end face of the feed transfer seat 37, and the ends of the two delivery pipes 42 are respectively fixedly connected to the side end faces of the spray column 40.

[0059] The inner spraying assembly includes a support vertical plate 43 , which is fixedly connected to one side of the upper surface of the spraying operation table 1 along the longitudinal direction and is connected to the first sliding port 2 .

[0060] An inner spray pipe 44 is provided above the first sliding opening 2. The inner spray pipe 44 is a semi-enclosed pipe with a single-side opening. The open end of the inner spray pipe 44 is fixed to the lateral inner wall of the supporting vertical plate 43. A plurality of circumferentially symmetrical electric nozzles 45 are fixed to the inner spray pipe 44 at equal intervals along the axial direction.

[0061] A second paint box 46 is fixedly connected to the transverse outer end face of the spraying operating table 1, a booster feed pump 47 is fixedly connected to the longitudinal outer wall of the second paint box 46, a feeding pipe 48 is fixedly connected to the center of the upper surface of the second paint box 46, and the feeding pipe 48 is connected to the second paint box 46. The end of the feeding pipe 48 passes through the supporting vertical plate 43 and is connected to the inner spray pipe 44.

[0062] The flip drying component is arranged between the inner spray component and the outer spray component, and the flip drying component includes a fixed side panel 49 fixedly connected to the upper surface of the spray operating table 1, and the fixed side panel 49 is arranged on one side of the first sliding opening 2. A flip driving motor 50 is fixedly connected to the outer side wall of the fixed side panel 49 near the upper part, and the output shaft end of the flip driving motor 50 passes through the fixed side panel 49 and is fixedly connected to a square drying box 51. The drying box 51 is arranged opposite to the first sliding opening 2, and a fan driving motor 52 is fixedly connected to the middle part of the upper surface of the drying box 51, and the output shaft end of the fan driving motor 52 passes through the drying box 51 and is fixedly connected to the fan blade 53.

[0063] A plurality of centrally symmetrical air inlets 54 are provided on the upper surface of the drying box 51, a horizontal annular electric heating tube 55 is provided between the fan blades 53 and the air inlet 54, and a power supply seat 56 is fixedly connected to each lateral outer end surface of the drying box 51, and the power supply seat 56 is connected to the annular electric heating tube 55 for power supply.

[0064] When the present invention is used: firstly, the steering drive motor 23 is started, and the steering drive motor 23 drives the middle turntable 24 to rotate 90° clockwise, so that the L-shaped clamping plate 26 is rotated to the vertical direction, and the composite steel pipe to be sprayed is clamped vertically onto the L-shaped clamping plate 26, and the clamping telescopic cylinder 29 is controlled to extend, and one end of the composite steel pipe is clamped and positioned from the inside by using the supporting positioning plate 30; the steering drive motor 23 is started again to rotate the composite steel pipe clamped on the L-shaped clamping plate 26 to the horizontal direction; the displacement telescopic cylinder 25 is controlled to extend, and the external spraying position of the composite steel pipe is adjusted, and the rotation drive motor 27 is started, and the rotation drive motor 27 drives the clamped composite steel pipe to rotate around the axis; the hydraulic telescopic cylinder 33 is controlled to shorten, and the electric control telescopic cylinder 36 is controlled to extend, and the composite steel pipe is driven to rotate around the axis. The movable U-shaped adjustment plate 35 moves close to the composite steel pipe, the paint delivery pump 39 is started, the external spray paint is input into the first paint box 34, the external spray paint enters the feeding transfer seat 37 through the telescopic spring tube 38, and then flows into the spray column 40 through the delivery pipe 42, and finally sprayed out from the high-pressure nozzle 41 to spray the external part of the rotating composite steel pipe; after the external spraying is completed, the sliding drive motor 21 is started, the sliding drive motor 21 drives the threaded screw 22 to rotate, and then drives the sliding vertical plate 20 to slide horizontally along the first sliding port 2, and the composite steel pipe is moved to the bottom of the flip drying component, the fan drive motor 52 is started, the fan drive motor 52 drives the fan blades 53 to rotate, the power supply seat 56 supplies power to the annular electric heating tube 55, and air enters from the air inlet 54 , after being heated by the annular electric heating tube 55, it is blown downward to dry the coating on the outer surface of the composite steel pipe; after the external drying is completed, the internal clamping assembly is controlled to slide horizontally, so that one end of the composite steel pipe clamped on the internal clamping assembly passes through the clamping cylinder 10 horizontally and the composite steel pipe is clamped externally by using the telescopic positioning clamping plate 11, and at the same time, the internal clamping assembly releases the clamping of the composite steel pipe; the sliding drive motor 21 is started again to move the sliding vertical plate 20 toward the second fixed plate 5, and at the same time, the steering drive motor 23 is started to rotate the L-shaped clamping plate 26 counterclockwise by 90°; the electric control telescopic cylinder 36 is controlled to shorten and the hydraulic telescopic rod is extended to drive the U-shaped adjustment plate 35 to approach the movable side plate 31, and at the same time, the movable side plate 31 is driven to move longitudinally. The first sliding opening 2 is driven by the driving motor 17, and the driving motor 17 drives the driving main wheel 18 to rotate, and the driving main wheel 18 drives the driving secondary wheel 19 to rotate, thereby driving the driving threaded rod 7 to rotate, and then driving the sliding base 6 to slide laterally along the first sliding opening 2, so that the clamped composite steel pipe is sleeved on the inner spraying pipe 44; the stepping motor 12 is started, and the stepping motor 12 drives the active rotating wheel 14 to rotate, and through the transmission of the intermediate driving wheel 16, drives the clamping cylinder 10 to rotate circumferentially; the booster feeding pump 47 is started, and the inner spray paint is input into the second paint box 46, and then input into the inner spraying pipe 44 through the feeding pipe 48, and the inner spray paint is sprayed out through the electric nozzle 45 to spray the inner circumferential wall of the composite steel pipe;The turning drive motor 50 is started, and the turning drive motor 50 drives the drying box 51 to rotate vertically so that it is horizontally opposite to the port of the composite steel pipe, so that the drying airflow is blown into the open end of the composite steel pipe to dry the internal coating. After drying, the composite steel pipe is removed. ;

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe, characterized in that: The spraying operation table (1) is a horizontally arranged square table, and the spraying operation table (1) is provided with an inner spraying component, an outer spraying component, an inner clamping component, an outer clamping component and a turning and drying component; The upper surface of the spraying operation table (1) is respectively provided with a first sliding opening (2) and a second sliding opening (3) extending transversely, a first fixing plate (4) is provided on the outer side of the first sliding opening (2), and a second fixing plate (5) is provided on the outer side of the second sliding opening (3), and the first fixing plate (4) and the second fixing plate (5) are respectively fixedly connected to two opposite transverse side end surfaces of the spraying operation table (1); The internal clamping assembly and the external spraying assembly are respectively arranged on two sides of the first sliding opening (2); The internal clamping assembly comprises a sliding vertical plate (20), the lower end of the sliding vertical plate (20) is slidably clamped in the second sliding opening (3), a steering drive motor (23) is fixedly connected to the longitudinal outer end surface of the sliding vertical plate (20), the output shaft end of the steering drive motor (23) passes through the sliding vertical plate (20) and is fixedly connected to an intermediate rotating disk (24), two symmetrical displacement telescopic cylinders (25) are fixedly connected to the outer end surface of the intermediate rotating disk (24) along the longitudinal direction, and the telescopic ends of the displacement telescopic cylinders (25) are fixedly connected to an L-shaped clamping plate (26); A rotary drive motor (27) is fixedly connected to the transverse outer end surface of the L-shaped clamping plate (26); the end of the output shaft of the rotary drive motor (27) passes through the L-shaped clamping plate (26) and is fixedly connected to a square positioning seat (28); each side end surface of the square positioning seat (28) is respectively fixedly connected to a clamping telescopic cylinder (29); and the telescopic end of each clamping telescopic cylinder (29) is respectively fixedly connected to a supporting positioning plate (30); The external spraying assembly comprises a vertically arranged movable side plate (31), the movable side plate (31) is arranged longitudinally telescopically on the outer side of the end surface of the spraying operation table (1), a first paint box (34) is fixedly connected to the longitudinal inner wall of the movable side plate (31) near the upper part, a U-shaped adjustment plate (35) is telescopically arranged on the outer side of the first paint box (34), a feeding intermediate transfer seat (37) is fixedly connected to the middle part of the longitudinal inner wall of the U-shaped adjustment plate (35), and a telescopic spring tube (38) is arranged between the first paint box (34) and the feeding intermediate transfer seat (37); Two symmetrical electric-controlled telescopic cylinders (36) are fixedly connected to the longitudinal inner wall of the movable side plate (31), and the telescopic ends of the electric-controlled telescopic cylinders (36) are fixedly connected to the longitudinal inner wall of the U-shaped adjustment plate (35); A paint delivery pump (39) is fixedly connected to the upper surface of the first paint box (34), a horizontal spray column (40) is fixedly connected to the longitudinal outer wall of the U-shaped adjustment plate (35), a plurality of high-pressure nozzles (41) are fixedly connected to the outer peripheral wall of the spray column (40) in the transverse direction, and a delivery pipe (42) is fixedly connected to each transverse side end face of the feed transfer seat (37), and the ends of the two delivery pipes (42) are respectively fixedly connected to the side end faces of the spray column (40); The inner spraying assembly comprises a supporting vertical plate (43), wherein the supporting vertical plate (43) is fixedly connected to one side of the upper surface of the spraying operation table (1) in the longitudinal direction and is connected to the first sliding port (2); An inner spraying pipe (44) is provided above the first sliding opening (2); the inner spraying pipe (44) is a semi-enclosed pipe with a single-side opening, the open end of the inner spraying pipe (44) is fixedly connected to the transverse inner wall of the supporting vertical plate (43), and a plurality of circumferentially symmetrical electric nozzles (45) are fixedly connected to the inner spraying pipe (44) at equal intervals along the axial direction; The external clamping assembly comprises a sliding base (6) slidably mounted in the first sliding opening (2), the sliding base (6) being a horizontally arranged square seat, two symmetrical driving threaded rods (7) being rotatably arranged in the first sliding opening (2), one end of each driving threaded rod (7) being rotatably supported on the lateral inner side wall of the first sliding opening (2), and the other end being rotatably supported on the inner side wall of the first fixed plate (4), and the two driving threaded rods (7) respectively pass through and are threadedly connected to the sliding base (6); A longitudinally extending clamping support plate (8) is fixedly connected to the upper surface of the sliding base (6), and a circular rotating clamping opening (9) is provided on the clamping support plate (8). A clamping cylinder (10) is rotatably provided in the rotating clamping opening (9), and both ends of the clamping cylinder (10) respectively pass through the rotating clamping opening (9) and extend to the outside thereof, and a plurality of centrally symmetrical positioning clamping plates (11) are telescopically provided on the inner peripheral wall of the clamping cylinder (10).

2. A spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe according to claim 1, characterized in that: A sliding drive motor (21) is fixedly connected to the outer end surface of the second fixed plate (5), the output shaft end of the sliding drive motor (21) passes through the second fixed plate (5) and is fixedly connected to a transversely extending threaded screw (22), the end of the threaded screw (22) being rotatably supported on the transverse inner wall of the second sliding opening (3); A telescopic connecting opening (32) is provided on the longitudinal end surface of the spraying operation table (1) corresponding to the movable side plate (31); two symmetrical hydraulic telescopic cylinders (33) are fixedly connected to the longitudinal inner wall of the telescopic connecting opening (32); the telescopic ends of the hydraulic telescopic cylinders (33) are fixedly connected to the longitudinal inner wall of the movable side plate (31) near the lower end.

3. The spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe according to claim 1, characterized in that: A stepper motor (12) is fixedly connected to the transverse outer end surface of the sliding base (6); a rotation communication port (13) is provided on one side of the upper surface of the sliding base (6); the output shaft end of the stepper motor (12) extends into the rotation communication port (13) and is fixedly connected to a driving rotating wheel (14); a clamping limit groove (15) is provided on the outer peripheral wall of the clamping cylinder (10); an intermediate transmission wheel (16) is rotatably provided on the transverse outer wall of the clamping support plate (8) near the lower part; the upper end of the intermediate transmission wheel (16) is rotatably abutted against the clamping limit groove (15), and the lower end is rotatably abutted against the driving rotating wheel (14).

4. The spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe according to claim 1, characterized in that: A transmission drive motor (17) is fixedly connected to the transverse outer wall of the first fixed plate (4); the end of the output shaft of the transmission drive motor (17) passes through the first fixed plate (4) and is fixedly connected to a transmission main wheel (18); a transmission secondary wheel (19) is fixedly connected to the outer peripheral wall near the end of each driving threaded rod (7); the transmission secondary wheel (19) and the transmission main wheel (18) are meshed for transmission.

5. The spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe according to claim 1, characterized in that: A second paint box (46) is fixedly connected to the transverse outer end surface of the spraying operation table (1), a booster feed pump (47) is fixedly connected to the longitudinal outer wall of the second paint box (46), a feeding pipe (48) is fixedly connected to the center of the upper surface of the second paint box (46), the feeding pipe (48) is connected to the second paint box (46), and the end of the feeding pipe (48) passes through the supporting vertical plate (43) and is connected to the inner spray pipe (44).

6. The spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe according to claim 1, characterized in that: The tumbling and drying assembly is arranged between the inner spraying assembly and the outer spraying assembly; The tumbling and drying assembly comprises a fixed side plate (49) fixedly connected to the upper surface of the spraying operation table (1), the fixed side plate (49) being arranged on one side of the first sliding opening (2), and a tumbling drive motor (50) being fixedly connected to the outer side wall of the fixed side plate (49) close to the upper part; The output shaft end of the flip drive motor (50) passes through the fixed side plate (49) and is fixedly connected to a square drying box (51); the drying box (51) is arranged opposite to the first sliding opening (2); a fan drive motor (52) is fixedly connected to the middle of the upper surface of the drying box (51); the output shaft end of the fan drive motor (52) passes through the drying box (51) and is fixedly connected to a fan blade (53).

7. A spraying device for anti-corrosion and wear-resistant treatment of the inner and outer surfaces of a composite steel pipe according to claim 6, characterized in that: The upper surface of the drying box (51) is provided with a plurality of centrally symmetrical air inlets (54); a horizontal annular electric heating tube (55) is provided between the fan blades (53) and the air inlets (54); and a power supply seat (56) is fixedly connected to each lateral outer end surface of the drying box (51); the power supply seat (56) is connected to the annular electric heating tube (55) for power supply.

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