Ceramic lining composite steel pipe surface coating pretreatment equipment and using method thereof

Abstract

The invention relates to the technical field of steel pipe production and processing, in particular to ceramic lining composite steel pipe surface coating pretreatment equipment which comprises a steel pipe air drying module, a steel pipe conveying module, a fixed supporting module and a sliding supporting module. The chip ceramic steel pipes hoisted and arranged in the fixed supporting area are driven by the steel pipe conveying module to transversely move along the steel pipe air drying module under the fixing of the fixed supporting module and the sliding supporting module, the steel pipe air drying module conducts air drying on the chip ceramic steel pipes, and the problem that ceramic chips fall off due to the fact that the temperature is too high in a traditional drying mode is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of production and processing equipment for steel pipes, and in particular to a surface coating pretreatment device for a ceramic lined composite steel pipe and a method for using the device. Background Art

[0002] As a new type of high-performance pipeline material, ceramic lined composite steel pipe has many advantages due to its unique structure. It is a clever combination of ceramic materials and steel pipes. This composite method not only gives full play to the wear-resistant and corrosion-resistant properties of ceramic materials, but also combines the advantages of high strength of steel pipes, thus creating its excellent wear-resistant, corrosion-resistant and high-strength performance. The patch ceramic lined steel pipe is a special type of ceramic lined composite steel pipe. It mainly fixes small ceramic blocks inside the steel pipe by gluing, thus forming a steel pipe with special properties. In practical applications, this process focuses particularly on the elbow part of the ceramic lined steel pipe, because the elbow part is often subjected to more severe erosion and wear during fluid transportation. The use of patch ceramic lining can significantly enhance the wear resistance and corrosion resistance of the elbow and extend its service life.

[0003] In the coating process of the patch ceramic lined steel pipe, there are a series of strict and delicate process steps. First, the ceramic lined steel pipe needs to be pickled. The purpose of this step is to remove impurities such as oil and rust on the surface of the steel pipe, so that the surface of the steel pipe is clean and provides a good foundation for the subsequent coating adhesion. After the pickling is completed, the water washing operation is immediately carried out to completely remove the acid remaining on the surface of the steel pipe to prevent the acid from further corroding the steel pipe. The steel pipe after water washing needs to be dried to remove the surface moisture and prepare for the coating process. However, for the patch ceramic lined steel pipe elbow, since the ceramic is glued to the inside of the steel pipe by glue, the traditional hot drying method is not applicable. This is because in a high temperature environment, the glue may deteriorate, age or even lose its viscosity, which will cause the ceramic block to fall off, affecting the performance and service life of the patch ceramic lined steel pipe elbow. For this reason, a ceramic lined composite steel pipe surface coating pretreatment device and its use method are proposed. Summary of the invention

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a surface coating pretreatment device for a ceramic lined composite steel pipe and a method for using the same.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ceramic lined composite steel pipe surface coating pretreatment device, comprising a steel pipe air drying module, a steel pipe transmission module, a fixed support module and a sliding support module; The steel pipe air-drying module is arranged between the water washing tank and the electrolytic cell in the electrolytic production line, and one end of the steel pipe air-drying module is connected to an external hot air blower; The steel pipe transmission module is mounted on the top of the steel pipe air-drying module, and the steel pipe transmission module can move horizontally along the top of the steel pipe air-drying module; The fixed support module and the sliding support module are both arranged in the middle of the steel pipe transmission module, and the fixed support module and the sliding support module cooperate to form a fixed support area of ​​the patch ceramic steel pipe; The patch ceramic steel pipe hoisted and placed in the fixed support area is fixed by the fixed support module and the sliding support module and driven by the steel pipe transmission module to move horizontally along the steel pipe air-drying module, and the steel pipe air-drying module air-dries the patch ceramic steel pipe.

[0006] Preferably, the steel pipe air-drying module includes an air-drying box, an air inlet and an external fixed connecting plate. The air-drying box is arranged between the water washing tank and the electrolytic cell, the air inlet is arranged at the bottom of one side of the air-drying box, the air inlet is connected to an external hot air blower, and the external fixed connecting plate is arranged on the side wall surface of the air-drying box.

[0007] Preferably, the steel pipe transmission module includes a track chain, a moving block, a connecting rod and a motor. The two groups of the track chains are respectively arranged on both sides of the surface of the air-drying box, the two groups of the moving blocks are respectively arranged on the surface of the track chains and are engaged with the outer wall of the air-drying box, the two groups of the connecting rods are arranged between the two groups of moving blocks, and the motor is arranged on the surface of one group of moving blocks. The motor and the moving blocks are transmitted through a sprocket and chain structure.

[0008] Preferably, the fixed support module includes a fixed sleeve, bolts, a rotating base and an end support plate; the fixed sleeve is arranged on the surface of the connecting rod, the two groups of bolts are respectively arranged on both sides of the surface of the fixed sleeve, the fixed sleeve is fixed to the surface of the connecting rod by the bolts, the rotating base is arranged on the surface of the fixed sleeve, and the end support plate is arranged in the middle of the rotating base.

[0009] Preferably, the fixed support module further comprises a support spring, the support spring is arranged on the surface of the end support plate, the other end of the end support plate is connected to the fixed sleeve, the end support plate has a left-right movable adjustment space, and the end support plate is pushed by the support spring to open upward; Preferably, the sliding support module includes a follower sleeve, a support rod, a connecting spring, a connecting piece and a belt. The follower sleeve is arranged at the other end of the connecting rod. Two groups of support rods are respectively arranged at the middle of the two ends of the follower sleeve through a rotating shaft. Two groups of connecting springs are respectively arranged on the surface of the support rod. The other end of the connecting spring is connected to the follower sleeve. The connecting piece is installed at the end of the support rod. The belt is connected between the two groups of connecting pieces.

[0010] Preferably, the belt is made of elastic material, and the belt is provided with several groups of different specifications, and the belts of different specifications are connected to the connecting piece in a detachable manner.

[0011] Preferably, a spring is connected between the fixed support module and the sliding support module, and two ends of the spring are respectively arranged between the fixed sliding sleeve and the side wall surface of the follower sliding sleeve, and the spring is provided in several groups of different specifications.

[0012] Preferably, a plurality of baffles are provided on one side of the surface of the air-drying box, the plurality of baffles are distributed side by side, and the plurality of baffles cooperate with the air-drying box to form a single-side air outlet channel.

[0013] A method for using a ceramic lined composite steel pipe surface coating pretreatment device comprises the following steps: Step A, placement of the patch ceramic steel tube; The step A comprises: Step A1, placing the outer wall of the end of the patch ceramic steel tube at the top opening of the end support plate; Step A2, let the other end of the patch ceramic steel tube hang naturally on the surface of the belt. The end support plate rotates around the connection center between the end support plate and the rotating base under the push of the patch ceramic steel tube. The support spring is squeezed and deformed under the pressure of the end support plate. The belt fits the surface of the patch ceramic steel tube under the gravity of the patch ceramic steel tube. The belt gradually wraps the patch ceramic steel tube. The two groups of support rods are bent inward under the pull of the belt until the end of the support rod contacts the patch ceramic steel tube. The connecting spring at the other end of the support rod is deformed accordingly. The air-dried patch ceramic steel tube is lifted up, and the supporting spring and the connecting spring restore their deformation. The supporting spring pushes the end support plate to rotate until the opening faces upward. The two groups of support rods are spread outward under the elastic force of the connecting spring until the belt is stretched horizontally. Step B, transmission of patch ceramic steel tube; The step B comprises: Turn on the motor, the motor drives the moving block to work, so that the moving block moves horizontally along the air drying box, and the connecting rod arranged between the moving blocks drives the fixed support module and the sliding support module and the patch ceramic steel tube arranged between the fixed support module and the sliding support module to move synchronously; Step C, air-drying the inner wall of the patch ceramic steel tube; The step C comprises: Step C1, connecting the external hot air blower to the air inlet; Step C2, turn on the external hot air blower, the hot air blown by the external hot air blower enters the air inlet, and then blows out from the air outlet on the top of the air drying box. Since the SMD ceramic steel pipe is parallel to the air outlet of the air drying box, the hot air blown out enters the SMD ceramic steel pipe through the open end of the SMD ceramic steel pipe, and then blows out from the other end of the SMD ceramic steel pipe. In the process of the hot air passing through the SMD ceramic steel pipe, the excess moisture in the SMD ceramic steel pipe is blown out from the other end of the SMD ceramic steel pipe, and the gaps on the inner wall of the SMD ceramic steel pipe are dried at the same time; Step D, lifting the patch ceramic steel pipe; The step D comprises: Lift the air-dried ceramic steel pipe, and let the supporting springs and connecting springs recover their shape. The supporting springs push the end supporting plate to rotate until the opening faces upwards. The two sets of supporting rods expand outwards under the elastic force of the connecting springs until the belt is stretched horizontally. Step E, adapting to different specifications of patch ceramic steel pipes; The step E comprises: Step E1, remove the belt between the two sets of support rods; Step E2, replacing the belt corresponding to the diameter of the patch ceramic steel tube; Step E3, place the outer wall of the end of the patch ceramic steel tube at the opening of the end support plate, and the other end is naturally hung to the surface of the belt. Since the fixed sleeve is connected to the connecting rod by bolts, the follower sleeve slides along the connecting rod to the side away from the fixed support module under the push of the patch ceramic steel tube, and the spring is stretched and stored under the pull of the follower sleeve until the patch ceramic steel tube is stably placed between the fixed support module and the sliding support module. Step E4, repeating steps B, C and D; Step E5, after air drying, the patch ceramic steel tube is lifted, the spring recovers its deformation, and the follower sliding sleeve moves in the reverse direction under the pull of the spring until the spring recovers its deformation and the follower sliding sleeve moves to the initial position.

[0014] Compared with the prior art, the present invention provides a ceramic lined composite steel pipe surface coating pretreatment device and a method for using the same, which has the following beneficial effects: The present invention is provided with a steel pipe air-drying module, a steel pipe transmission module, a fixed support module and a sliding support module. The fixed support module and the sliding support module cooperate to form a fixed support area of ​​the patch ceramic steel pipe. The patch ceramic steel pipe hoisted and placed in the fixed support area is driven by the steel pipe transmission module to move laterally along the steel pipe air-drying module under the fixation of the fixed support module and the sliding support module. The steel pipe air-drying module air-dries the patch ceramic steel pipe, avoiding the problem of ceramic pieces falling off due to excessive temperature in the traditional drying method. In the present invention, the specifications of the belt are matched with the specifications of the patch ceramic steel tube. When the patch ceramic steel tube is placed on the surface of the belt, the belt fits on the surface of the patch ceramic steel tube, so that the patch ceramic steel tube is placed more stably; the sliding support module is pulled to move by the elastic force of the deformation of the spring, so as to achieve the purpose of adjusting the distance between the fixed support module and the sliding support module, so that the equipment can adapt to patch ceramic steel tubes of more specifications; several groups of baffles reduce the air output while increasing the intensity of the air output, blow out excess moisture in the patch ceramic steel tube, and quickly air-dry the gaps on the inner wall of the patch ceramic steel tube, thereby improving the air-drying efficiency of the patch ceramic steel tube, and the baffle can receive the moisture blown out from the patch ceramic steel tube to avoid the problem of moisture dripping into the air-drying box and damaging the air-drying box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure in the embodiment; Figure 2 It is a schematic diagram of the three-dimensional structure in the embodiment; Figure 3 It is a schematic diagram of a local structure in the embodiment; Figure 4 It is a schematic diagram of a local structure in the embodiment; Figure 5 Schematic diagram of the fixed support module structure in the embodiment.

[0016] In the figure: 1. Steel pipe air-drying module; 11. Air-drying box; 12. Air inlet; 13. External fixed connecting plate; 2. Steel pipe transmission module; 21. Track chain; 22. Moving block; 23. Connecting rod; 24. Motor; 3. Fixed support module; 31. Fixed sleeve; 32. Bolt; 33. Rotating base; 34. End support plate; 35. Support spring; 4. Sliding support module; 41. Follow-up sleeve; 42. Support rod; 43. Connecting spring; 44. Connecting piece; 45. Belt; 5. Spring; 6. Baffle. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0018] like Figure 1-Figure 5 As shown, this embodiment provides a ceramic lined composite steel pipe surface coating pretreatment device, including a steel pipe air drying module 1, a steel pipe transmission module 2, a fixed support module 3 and a sliding support module 4; The steel pipe air-drying module 1 is arranged between the water washing tank and the electrolytic cell in the electrolytic production line, and one end of the steel pipe air-drying module 1 is connected to an external hot air blower; The steel pipe transmission module 2 is mounted on the top of the steel pipe air-drying module 1, and the steel pipe transmission module 2 can move horizontally along the top of the steel pipe air-drying module 1; The fixed support module 3 and the sliding support module 4 are both arranged in the middle of the steel pipe transmission module 2, and the fixed support module 3 and the sliding support module 4 cooperate to form a fixed support area of ​​the patch ceramic steel pipe; The patch ceramic steel pipe hoisted and placed in the fixed support area is fixed by the fixed support module 3 and the sliding support module 4 and is driven by the steel pipe transmission module 2 to move horizontally along the steel pipe air-drying module 1, and the steel pipe air-drying module 1 air-dries the patch ceramic steel pipe.

[0019] The steel pipe air-drying module 1 includes an air-drying box 11, an air inlet 12 and an external fixed connecting plate 13. The air-drying box 11 is arranged between the water washing tank and the electrolytic cell, the air inlet 12 is arranged at the bottom of one side of the air-drying box 11, the air inlet 12 is connected to an external hot air blower, and the external fixed connecting plate 13 is arranged on the side wall surface of the air-drying box 11; when the hot air passes through the patch ceramic steel pipe, the excess moisture in the patch ceramic steel pipe is blown out from the other end of the patch ceramic steel pipe, and the gaps in the inner wall of the patch ceramic steel pipe are dried at the same time, avoiding the problem of ceramic sheets falling off due to excessive temperature in traditional drying methods.

[0020] The steel pipe transmission module 2 includes a track chain 21, a moving block 22, a connecting rod 23 and a motor 24. The two groups of track chains 21 are respectively arranged on both sides of the surface of the air-drying box 11, the two groups of moving blocks 22 are respectively arranged on the surface of the track chain 21 and are engaged with the outer wall of the air-drying box 11, the two groups of connecting rods 23 are arranged between the two groups of moving blocks 22, and the motor 24 is arranged on the surface of one group of moving blocks 22. The motor 24 and the moving block 22 are transmitted through a sprocket and chain structure; the steel pipe transmission module 2 drives the fixed support module 3 and the sliding support module 4 as well as the patch ceramic steel pipe arranged between the fixed support module 3 and the sliding support module 4 to move synchronously, and cooperates with the steel pipe air-drying module 1 to complete the air-drying of the patch ceramic steel pipe while transmitting the patch ceramic steel pipe, thereby improving the production efficiency of the patch ceramic steel pipe.

[0021] The fixed support module 3 includes a fixed sleeve 31, a bolt 32, a rotating base 33 and an end support plate 34; the fixed sleeve 31 is arranged on the surface of the connecting rod 23, two groups of bolts 32 are respectively arranged on both sides of the surface of the fixed sleeve 31, the fixed sleeve 31 is fixed to the surface of the connecting rod 23 by the bolts 32, the rotating base 33 is arranged on the surface of the fixed sleeve 31, and the end support plate 34 is arranged in the middle of the rotating base 33; the fixed support module 3 also includes a supporting spring 35, the supporting spring 35 is arranged on the surface of the end support plate 34, the other end of the end support plate 34 is connected to the fixed sleeve 31, the end support plate 34 has an adjustment space that can be moved left and right, and the end support plate 34 is pushed by the supporting spring 35 to open upward; the sliding support module 4 includes a follower sleeve 41, a support rod 42, The connecting spring piece 43, the connecting piece 44 and the belt 45, the follow-up sliding sleeve 41 is arranged at the other end of the connecting rod 23, and the two groups of support rods 42 are respectively arranged at the middle of the two ends of the follow-up sliding sleeve 41 through the rotating shaft. The two groups of connecting spring pieces 43 are respectively arranged on the surface of the support rod 42, and the other end of the connecting spring piece 43 is connected to the follow-up sliding sleeve 41. The connecting piece 44 is installed at the end of the support rod 42, and the belt 45 is connected between the two groups of connecting pieces 44; this installation method only needs to place the two ends of the patch ceramic steel tube between the fixed support module 3 and the sliding support module 4 respectively, and the fixed support module 3 and the sliding support module 4 automatically complete the fixation of the patch ceramic steel tube. After air drying, the patch ceramic steel tube only needs to be lifted, eliminating the steps of manual fixation and disassembly by the staff, thereby improving the production efficiency of the patch ceramic steel tube. The push of the supporting spring 35 ensures that the end supporting plate 34 is always in an upward opening state when it is stationary. When placing the patch ceramic steel tube, the outer wall of the patch ceramic steel tube can be quickly aligned with the opening of the end supporting plate 34. At the same time, when air-drying patch ceramic steel tubes with different degrees of bending, the angle between the end of the patch ceramic steel tube and the air-drying box 11 is adjusted by rotating the end supporting plate 34, so that the two are always in a parallel state, and the hot air blown out of the air-drying box 11 can better enter the patch ceramic steel tube.

[0022] The belt 45 is made of elastic material, and the belt 45 is provided with several groups of different specifications. The belts 45 of different specifications are connected to the connecting piece 44 in a detachable manner; the belts 45 of different specifications are respectively adapted to the patch ceramic steel tubes of different diameters. When the patch ceramic steel tube of a certain diameter is replaced, the belt 45 between the two groups of support rods 42 is removed, and the corresponding belt 45 is replaced. When the patch ceramic steel tube is installed on the surface of the belt 45, the belt 45 is attached to the surface of the patch ceramic steel tube, thereby wrapping the patch ceramic steel tube and making the patch ceramic steel tube more stably placed.

[0023] A spring 5 is connected between the fixed support module 3 and the sliding support module 4, and the two ends of the spring 5 are respectively arranged between the side walls of the fixed sliding sleeve 31 and the follower sliding sleeve 41. The spring 5 is provided with several groups of different specifications; the sliding support module 4 is pulled to move by the elastic force of the deformation of the spring 5, so as to achieve the purpose of adjusting the distance between the fixed support module 3 and the sliding support module 4, so that the equipment can adapt to more specifications of patch ceramic steel tubes.

[0024] A plurality of baffles 6 are arranged on one side of the surface of the air drying box 11, and the plurality of baffles 6 are distributed side by side, and the plurality of baffles 6 cooperate with the air drying box 11 to form a single-sided air outlet channel; the hot air in the air drying box 11 is blown out through the single-sided air outlet channel, which reduces the air outlet volume while increasing the intensity of the air outlet. In the process of the high-intensity hot air passing through the patch ceramic steel tube, the excess moisture in the patch ceramic steel tube is blown out from the other end of the patch ceramic steel tube, and the gaps on the inner wall of the patch ceramic steel tube are quickly dried, thereby improving the drying efficiency of the patch ceramic steel tube. The baffle 6 can receive the moisture blown out from the patch ceramic steel tube to prevent the moisture from dripping into the air drying box 11 and damaging the air drying box 11.

[0025] A method for using a ceramic lined composite steel pipe surface coating pretreatment device: The outer wall of the end of the patch ceramic steel tube is placed at the top opening of the end support plate 34, and the other end of the patch ceramic steel tube is naturally hung to the surface of the belt 45. The end support plate 34 rotates around the connection center between the end support plate 34 and the rotating base 33 under the push of the patch ceramic steel tube. The supporting spring 35 is squeezed and deformed under the pressure of the end support plate 34. The belt 45 fits the surface of the patch ceramic steel tube under the gravity of the patch ceramic steel tube. The belt 45 gradually wraps the patch ceramic steel tube. The two groups of support rods 42 are pulled inward by the belt 45 until the end of the support rod 42 contacts the patch ceramic steel tube, and the connecting spring 43 at the other end of the support rod 42 is deformed accordingly. The air-dried patch ceramic steel tube is lifted up, and the supporting spring 35 and the connecting spring 43 restore their deformation. The supporting spring 35 pushes the end support plate 34 to rotate until the opening faces upward, and the two groups of support rods 42 are spread outward under the elastic force of the connecting spring 43 until the belt 45 is stretched horizontally straight. The transmission of the patch ceramic steel tube, turn on the motor 24, the motor 24 drives the moving block 22 to work, so that the moving block 22 moves laterally along the air drying box 11, and the connecting rod 23 arranged between the moving blocks 22 drives the fixed support module 3 and the sliding support module 4 and the patch ceramic steel tube arranged between the fixed support module 3 and the sliding support module 4 to move synchronously; Air-dry the inner wall of the patch ceramic steel tube, connect the external hot air blower to the air inlet 12, turn on the external hot air blower, and the hot air blown by the external hot air blower enters the air inlet 12, and then blows out from the air outlet at the top of the air drying box 11. Since the patch ceramic steel tube is parallel to the air outlet of the air drying box 11, the hot air blown out enters the patch ceramic steel tube through the open end of the patch ceramic steel tube, and then blows out from the other end of the patch ceramic steel tube. In the process of the hot air passing through the patch ceramic steel tube, the excess moisture in the patch ceramic steel tube is blown out from the other end of the patch ceramic steel tube, and the gaps on the inner wall of the patch ceramic steel tube are air-dried at the same time; Lift the air-dried ceramic steel pipe, and let the supporting spring sheet 35 and the connecting spring sheet 43 recover their deformation. The supporting spring sheet 35 pushes the end supporting plate 34 to rotate until the opening faces upward. The two groups of supporting rods 42 are extended outward under the elastic force of the connecting spring sheet 43 until the belt 45 is stretched horizontally. To adapt to different specifications of patch ceramic steel tubes, remove the belt 45 between the two groups of support rods 42, replace the belt 45 corresponding to the diameter of the patch ceramic steel tube, place the outer wall of the end of the patch ceramic steel tube at the opening of the end support plate 34, and the other end is naturally hung to the surface of the belt 45. Since the fixed sleeve 31 is connected to the connecting rod 23 by the bolt 32, the follower sleeve 41 slides along the connecting rod 23 to the side away from the fixed support module 3 under the push of the patch ceramic steel tube, and the spring 5 extends and accumulates force under the pull of the follower sleeve 41 until the patch ceramic steel tube is stably placed between the fixed support module 3 and the sliding support module 4. After air drying, the patch ceramic steel tube is lifted up, the spring 5 recovers its deformation, and the follower sleeve 41 moves in the opposite direction under the pull of the spring 5 until the spring 5 recovers its deformation and the follower sleeve 41 moves to its initial position.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A ceramic lined composite steel pipe surface coating pretreatment device, characterized in that: It comprises a steel pipe air-drying module (1), a steel pipe transmission module (2), a fixed support module (3) and a sliding support module (4); The steel pipe air-drying module (1) is arranged between the water washing tank and the electrolytic cell in the electrolytic production line, and one end of the steel pipe air-drying module (1) is connected to an external hot air blower; The steel pipe transmission module (2) is mounted on the top of the steel pipe air-drying module (1), and the steel pipe transmission module (2) can be moved laterally along the top of the steel pipe air-drying module (1); The fixed support module (3) and the sliding support module (4) are both arranged in the middle of the steel pipe transmission module (2), and the fixed support module (3) and the sliding support module (4) cooperate to form a fixed support area of ​​the patch ceramic steel pipe; The patch ceramic steel pipe hoisted and placed in the fixed support area is fixed by the fixed support module (3) and the sliding support module (4) and is driven by the steel pipe transmission module (2) to move horizontally along the steel pipe air-drying module (1), and the steel pipe air-drying module (1) air-dries the patch ceramic steel pipe.

2. The surface coating pretreatment equipment of a ceramic lined composite steel pipe according to claim 1 is characterized by: The steel pipe air-drying module (1) comprises an air-drying box (11), an air inlet (12) and an external fixed connecting plate (13); the air-drying box (11) is arranged between a water washing tank and an electrolytic cell; the air inlet (12) is arranged at the bottom of one side of the air-drying box (11); the air inlet (12) is connected to an external hot air blower; and the external fixed connecting plate (13) is arranged on the side wall surface of the air-drying box (11).

3. The surface coating pretreatment equipment of a ceramic lined composite steel pipe according to claim 1 is characterized in that: The steel pipe transmission module (2) comprises a track chain (21), a moving block (22), a connecting rod (23) and a motor (24); two groups of the track chains (21) are respectively arranged on both sides of the surface of the air drying box (11); two groups of the moving blocks (22) are respectively arranged on the surface of the track chain (21) and are engaged with the outer wall of the air drying box (11); two groups of the connecting rods (23) are arranged between the two groups of moving blocks (22); the motor (24) is arranged on the surface of one group of the moving blocks (22); and the motor (24) and the moving blocks (22) are driven by a sprocket and chain structure.

4. The surface coating pretreatment equipment of a ceramic lined composite steel pipe according to claim 1 is characterized in that: The fixed support module (3) comprises a fixed sleeve (31), bolts (32), a rotating base (33) and an end support plate (34); the fixed sleeve (31) is arranged on the surface of the connecting rod (23); two groups of bolts (32) are respectively arranged on both sides of the surface of the fixed sleeve (31); the fixed sleeve (31) is fixed to the surface of the connecting rod (23) by means of the bolts (32); the rotating base (33) is arranged on the surface of the fixed sleeve (31); and the end support plate (34) is arranged in the middle of the rotating base (33).

5. The surface coating pretreatment equipment of a ceramic lined composite steel pipe according to claim 4 is characterized in that: The fixed support module (3) further comprises a support spring (35), wherein the support spring (35) is arranged on the surface of the end support plate (34), the other end of the end support plate (34) is connected to the fixed sleeve (31), the end support plate (34) has an adjustment space that can be moved leftwards and rightwards, and the end support plate (34) is pushed by the support spring (35) to open upwards.

6. The ceramic lined composite steel pipe surface coating pretreatment equipment according to claim 1, characterized in that: The sliding support module (4) comprises a follower sleeve (41), a support rod (42), a connecting spring (43), a connecting piece (44) and a belt (45); the follower sleeve (41) is arranged at the other end of the connecting rod (23); two groups of support rods (42) are respectively arranged at the middle of both ends of the follower sleeve (41) through a rotating shaft; two groups of connecting springs (43) are respectively arranged on the surface of the support rod (42); the other end of the connecting spring (43) is connected to the follower sleeve (41); the connecting piece (44) is installed at the end of the support rod (42); and the belt (45) is connected between the two groups of connecting pieces (44).

7. The ceramic lined composite steel pipe surface coating pretreatment equipment according to claim 6, characterized in that: The belt (45) is made of elastic material, and the belt (45) is provided in a plurality of groups with different specifications. The belts (45) with different specifications are connected to the connecting piece (44) in a detachable manner.

8. The ceramic lined composite steel pipe surface coating pretreatment equipment according to claim 1, characterized in that: A spring (5) is connected between the fixed support module (3) and the sliding support module (4), and two ends of the spring (5) are respectively arranged between the side walls of the fixed sliding sleeve (31) and the follower sliding sleeve (41), and the spring (5) is provided in a plurality of groups of different specifications.

9. A ceramic lined composite steel pipe surface coating pretreatment device according to claim 2 or 8, characterized in that: A plurality of groups of baffles (6) are provided on one side of the surface of the air drying box (11); the plurality of groups of baffles (6) are arranged side by side, and the plurality of groups of baffles (6) cooperate with the air drying box (11) to form a single-side air outlet channel.

10. A method for using a ceramic lined composite steel pipe surface coating pretreatment device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step (A), placement of the patch ceramic steel tube; Step (A1), placing the outer wall of the end of the patch ceramic steel tube at the top opening of the end support plate (34); Step (A2), the other end of the patch ceramic steel tube is naturally hung down on the surface of the belt (45), and the end support plate (34) is pushed by the patch ceramic steel tube to rotate around the connection center of the end support plate (34) and the rotating base (33), and the support spring (35) is squeezed and deformed under the pressure of the end support plate (34), and the belt (45) is attached to the surface of the patch ceramic steel tube under the gravity of the patch ceramic steel tube. The belt (45) gradually wraps the patch ceramic steel tube, and the two sets of support rods (42 ) is pulled by the belt (45) and bends inward until the end of the support rod (42) contacts the patch ceramic steel tube, and the connecting spring piece (43) at the other end of the support rod (42) is deformed accordingly, and the air-dried patch ceramic steel tube is lifted up, and the supporting spring piece (35) and the connecting spring piece (43) restore their deformation, and the supporting spring piece (35) pushes the end support plate (34) to rotate until the opening faces upward, and the two groups of support rods (42) are unfolded outward under the elastic force of the connecting spring piece (43) until the belt (45) is stretched horizontally; Step (B), transmission of the patch ceramic steel tube, turning on the motor (24), the motor (24) drives the moving block (22) to work, so that the moving block (22) moves laterally along the air drying box (11), and the connecting rod (23) arranged between the moving blocks (22) drives the fixed support module (3) and the sliding support module (4) as well as the patch ceramic steel tube arranged between the fixed support module (3) and the sliding support module (4) to move synchronously; The step (C) comprises: Step (C), air-drying the inner wall of the patch ceramic steel tube; Step (C1), connecting the external hot air blower to the air inlet (12); Step (C2), turning on the external hot air blower, the hot air blown by the external hot air blower enters the air inlet (12), and is blown out from the air outlet at the top of the air drying box (11). Since the SMD ceramic steel pipe is parallel to the air outlet of the air drying box (11), the blown hot air enters the SMD ceramic steel pipe through the open end of the SMD ceramic steel pipe, and is blown out from the other end of the SMD ceramic steel pipe. In the process of the hot air passing through the SMD ceramic steel pipe, the excess moisture in the SMD ceramic steel pipe is blown out from the other end of the SMD ceramic steel pipe, and the gaps on the inner wall of the SMD ceramic steel pipe are dried at the same time; Step (D), lifting the patch ceramic steel tube, lifting the air-dried patch ceramic steel tube, restoring the deformation of the supporting spring sheet (35) and the connecting spring sheet (43), the supporting spring sheet (35) pushes the end supporting plate (34) to rotate until the opening faces upward, and the two groups of supporting rods (42) are unfolded outward under the elastic force of the connecting spring sheet (43) until the belt (45) is stretched horizontally; Step (E), adapting to patch ceramic steel tubes of different specifications, said step (E) comprises: Step (E1), removing the belt (45) between the two sets of support rods (42); Step (E2), replacing the belt (45) corresponding to the diameter of the patch ceramic steel tube; Step (E3), placing the outer wall of the end of the patch ceramic steel tube at the opening of the end support plate (34), and the other end is naturally hung down to the surface of the belt (45); since the fixed sliding sleeve (31) is connected to the connecting rod (23) by the bolt (32), the follower sliding sleeve (41) slides along the connecting rod (23) to the side away from the fixed support module (3) under the push of the patch ceramic steel tube, and the spring (5) is extended and stored under the pull of the follower sliding sleeve (41) until the patch ceramic steel tube is stably placed between the fixed support module (3) and the sliding support module (4); Step (E4), repeating steps (B), (C), and (D); Step (E5), after air drying, the patch ceramic steel tube is lifted, the spring (5) recovers its deformation, and the follower sliding sleeve (41) moves in the reverse direction under the pull of the spring (5) until the spring (5) recovers its deformation and the follower sliding sleeve (41) moves to the initial position.

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