Anti-corrosion coating spraying equipment

Abstract

The invention relates to the field of spraying equipment, in particular to anticorrosive coating spraying equipment. The spraying device comprises a spraying frame, a flexible traction piece, a positioning assembly and an internal spraying assembly. Air supply drying bases are arranged on the front portion and the rear portion of the spraying frame. A rotating column, an external spraying base and a recycling base are sequentially arranged in the spraying frame from top to bottom. The external spraying seat sprays the outer wall of the pipeline from the upper part; the flexible traction pieces are matched in pairs and are arranged on the two sides of the external spraying seat and the rotating column in tandem; the positioning assemblies are arranged on the rotating column, are in one-to-one correspondence with each pair of flexible traction pieces and are used for positioning the upper ends of the corresponding flexible traction pieces; the middle of the internal spraying assembly penetrates through the interior of the pipeline, the two ends of the internal spraying assembly extend out of the pipeline and are provided with adjusting pieces correspondingly, the ends of the internal spraying assembly are connected with the lower ends of the corresponding flexible traction pieces, and the internal spraying assembly sprays the inner wall of the pipeline from the interior. The device is well matched with pipelines of different specifications, dynamic spraying is comprehensive and free of dead corners, and batch spraying is uniform and efficient.

Description

Technical Field

[0001] The present invention relates to the field of spraying equipment, and in particular to an anti-corrosion coating spraying equipment. Background Art

[0002] Multiple corrosive environments (such as acidic and alkaline chemicals, high humidity, and high temperature, etc.) are involved in the semiconductor manufacturing process. These factors will accelerate the corrosion of equipment components, affecting their performance and service life. Therefore, anti-corrosion coatings are crucial in the semiconductor equipment processing technology, especially in the pipeline processing of semiconductor equipment. For example, conveying pipelines, discharge pipelines, etc., which are used to transport highly corrosive gases and liquids, need to have corrosion resistance to prevent gas and liquid leakage or pollution caused by pipeline corrosion.

[0003] A Chinese patent document with the authorization announcement number CN118847410B discloses an anti-corrosion coating spraying equipment for metal product processing. By moving down multiple spraying components and contacting the surface of the workpiece, the spraying nozzles will extend into the support box under pressure. Since multiple spraying nozzles contact and are pressed against the surface of the workpiece, the sliding conduit drives two positioning components to move through the retaining ring. When the side plate in the positioning component drives the slider to move upward, it is supported by the elastic force of the second spring, so that the slider drives the latch to be inserted into the card slot, achieving the purpose of locking the sliding conduit and the spraying nozzle. Secondly, control the multi-stage electro-hydraulic rod to extend, and the sliding column drives the support box to move upward through the fixed frame, so that the spraying nozzle is separated from the workpiece. Connect the spraying machine adapter on the connecting pipe to an external spraying machine, and the workpiece can be sprayed.

[0004] The above anti-corrosion coating spraying equipment has the following deficiencies: This spraying equipment sprays the outside of a stationary workpiece with a fixed angle and position. Therefore, it is easy to miss spraying at the bottom and inside, or the spraying is uneven, resulting in limitations in the spraying effect. During operation, the staff needs to repeatedly adjust the position and angle of the workpiece, which is time-consuming and laborious. Summary of the Invention

[0005] In view of the problems in the background art, an anti-corrosion coating spraying equipment is proposed. The present invention has good matching with pipelines of different specifications, provides comprehensive and non-dead-angle dynamic spraying, and is uniform and efficient in batch spraying.

[0006] The present invention provides an anti-corrosion coating spraying device, which includes a spraying frame, a flexible traction member, a positioning assembly, and an internal spraying assembly. Air supply drying seats that can be lifted are arranged on both the front and rear sides of the spraying frame. Inside the spraying frame, a rotatable rotating column, an externally spraying seat that can be lifted, and a recovery seat that can be lifted are sequentially arranged from top to bottom. The externally spraying seat sprays the outer wall of the pipeline from above. The flexible traction members are paired and arranged on both sides of the externally spraying seat and the rotating column, one in front and one behind. The positioning assembly is arranged on the rotating column and corresponds to each pair of flexible traction members one by one, and is used for positioning the upper ends of the corresponding flexible traction members. The middle part of the internal spraying assembly penetrates through the inside of the pipeline, and both ends extend out of the pipeline and are respectively provided with adjusting members. The end of the internal spraying assembly is connected to the lower end of the corresponding flexible traction member, and the internal spraying assembly sprays the inner wall of the pipeline from the inside. The distance between the two groups of adjusting members can be adjusted. On the one hand, it positions the pipeline from both ends, and on the other hand, it drives the pipeline to rotate automatically from both ends. The rotating column, the positioning assembly, the flexible traction member, and the internal spraying assembly form a closed pipeline suspension structure, so that the two ends of the pipeline face one in front and one behind. At the same time, through the rotation of the rotating column and the drive of the adjusting members, the inner and outer parts of the pipeline are synchronously sprayed while the pipeline swings back and forth and rotates automatically.

[0007] Preferably, the positioning assembly includes an installation sleeve sleeved on the rotating column and limiting rings located on both sides of the installation sleeve. A positioning structure for positioning the flexible traction member is arranged on the installation sleeve. A positioning frame is mounted on the two groups of limiting rings. A lifting driving member is arranged on the positioning frame and drives the positioning seat to press down onto the positioning structure to position the flexible traction member.

[0008] Preferably, the flexible traction member is a steel rope. The positioning structure includes a positioning groove arranged on the installation sleeve. The positioning groove is within the coverage range of the positioning seat, and a fixing rod is arranged in the groove.

[0009] Preferably, the internal spraying assembly includes a support rod. Both ends of the support rod are respectively connected to the lower ends of the corresponding side flexible traction members. Spraying holes I are arranged along the length direction of the support rod. A feed pipe I communicating the spraying holes I and the coating storage end is also arranged on the support rod. The adjusting members are arranged in a mirror image, one on the left and one on the right, on the support rod.

[0010] Preferably, the adjusting member includes a sliding sleeve slidably arranged on the support rod. An adjusting ring is arranged on the sleeve mouth of the sliding sleeve, and a vibrating member and a fixing member are arranged on the sleeve body. An arc-shaped groove is arranged at the upper end of the adjusting ring. An adjustable frame that can slide is arranged in the arc-shaped groove. On the side of the adjustable frame facing the pipeline, an adjusting roller is arranged, which adjusts its position up and down to fit the outer wall of the pipeline mouth and drives the pipeline to rotate synchronously through rotation.

[0011] Preferably, the external spraying seat includes a lifting platform located between the support rod and the rotating column; the lifting platform is slidably arranged on the spraying frame and penetrates through all the pipeline suspension structures. The bottom of the lifting platform is provided with spraying plates with spraying holes II corresponding to the support rods one by one. The lifting platform is also provided with a limiting member acting on the flexible traction member and a feeding pipe II connecting the spraying holes II and the paint storage end.

[0012] Preferably, the limiting member is an annular ring with a notch, which is installed on the front and rear sides of the lifting platform corresponding to the position of the spraying plate; the notch is located on the side of the annular ring.

[0013] Preferably, the recycling seat includes a recycling platform located below the support rod and slidably arranged on the spraying frame; the recycling platform is opposite to the lifting platform in position, and a recycling pool is arranged at the upper end; a slag blocking net is arranged on the opening of the recycling pool.

[0014] Preferably, the air supply and drying seat includes an air supply and drying platform slidably arranged at the front and rear ends of the spraying frame; a blower is arranged on the air supply and drying platform.

[0015] Preferably, the pipe orifice is opposite to the blower when the pipeline is suspended.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: A closed pipeline suspension structure is formed by using the rotating column, the positioning component, the flexible traction member and the internal spraying component, and the pipelines are suspended and installed one by one, so that the pipelines have the same height and the same pipe orifice orientation. Then, the pipeline is initially limited by sliding the sliding sleeve and fixing the sliding sleeve. Then, the position of the adjusting frame is adjusted by sliding along the pipe orifice, and the adjusting roller is lowered to fit the outer wall of the pipe orifice, and then the pipeline is secondarily limited. After the pipeline is fixed, its movement is controlled. On the one hand, the adjusting rollers at both ends of the pipeline rotate synchronously in one direction to push the pipelines suspended on the support rod to rotate synchronously; on the other hand, the back-and-forth rotation of the rotating column drives the pipeline to swing back and forth. Then, spraying is started during the vibration, rotation and swinging of the pipeline. The support rod sprays downward on the inner wall of the pipeline through the spraying hole I, and the spraying plate sprays on the outer wall of the pipeline from above, so that the inner and outer walls of a batch of pipelines are synchronously sprayed dynamically. It has good matching with pipelines of different specifications, the dynamic spraying is comprehensive without dead angles, and the batch spraying is uniform and efficient. The overflowing anti-corrosion coating paint is recycled during the spraying process. After the spraying is completed, the blower ventilates and dries the suspended pipelines. The anti-corrosion coating has a good spraying effect, strong environmental protection, and is beneficial to maintaining the pipeline performance of semiconductor equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the anti-corrosion coating spraying equipment (view angle one); Figure 2 It is a structural diagram of the anti-corrosion coating spraying equipment (view angle two); Figure 3 It is a structural diagram of the anti-corrosion coating spraying equipment (view angle three); Figure 4 Schematic diagram of a closed pipeline suspension structure Figure 5 Combined schematic diagram of a single positioning component, a flexible traction member, and an internal spraying component (viewpoint one) Figure 6 Combined schematic diagram of a single positioning component, a flexible traction member, and an internal spraying component (viewpoint two) Figure 7 For Figure 6 Enlarged view of location A in Figure 8 Structural diagram of the internal spraying component Figure 9 Structural diagram of the adjusting member Figure 10 Structural diagram of the external spraying seat and the recovery seat Figure 11 Structural diagram of the limiting member Figure 12 Structural diagram of the air supply and drying seat

[0018] Reference numerals: 1, spraying rack; 101, electric slide rail two; 102, electric slide rail three; 103, electric slide rail four; 2, rotating column; 3, positioning component; 301, mounting sleeve; 302, limiting ring; 303, positioning frame; 304, lifting driving member; 305, positioning seat; 306, anti-slip strip; 307, fixing rod; 4, external spraying seat; 401, lifting platform; 402, spraying plate; 403, limiting member; 404, notch; 5, flexible traction member; 6, internal spraying component; 601, support rod; 602, spraying hole one; 603, feed pipe one; 604, sliding sleeve; 605, fixing member; 606, adjusting ring; 607, vibrating member; 608, adjusting frame; 609, arc groove; 612, adjusting roller; 613, guiding groove; 614, fixing hole one; 7, recovery seat; 701, recovery platform; 702, recovery pool; 703, slag retaining net; 8, air supply and drying seat; 801, air supply and drying platform; 802, fan Detailed implementation method

[0019] Example 1, the present invention proposes an anti-corrosion coating spraying device, as Figures 1 - 4As shown in the figure, it includes a spraying rack 1, a flexible traction member 5, a positioning assembly 3, and an internal spraying assembly 6. Air supply and drying seats 8 that can be lifted are arranged at the front and rear of the spraying rack 1. Inside the spraying rack 1, a rotatable rotating column 2, an externally spraying seat 4 that can be lifted, and a recovery seat 7 that can be lifted are arranged in sequence from top to bottom. The externally spraying seat 4 sprays on the outer wall of the pipeline from above. The flexible traction members 5 are paired and arranged on both sides of the externally spraying seat 4 and the rotating column 2, one in front and one behind. The positioning assembly 3 is arranged on the rotating column 2 and is correspondingly arranged with each pair of flexible traction members 5 for positioning the upper ends of the corresponding flexible traction members 5. The middle part of the internal spraying assembly 6 penetrates through the inside of the pipeline, and both ends extend out of the pipeline and are respectively provided with adjusting members. The end of the internal spraying assembly 6 is connected to the lower end of the corresponding flexible traction member 5. The internal spraying assembly 6 sprays on the inner wall of the pipeline from the inside. The distance between the two groups of adjusting members can be adjusted. On the one hand, it positions the pipeline from both ends, and on the other hand, it drives the pipeline to rotate self - clockwise from both ends. The rotating column 2, the positioning assembly 3, the flexible traction members 5, and the internal spraying assembly 6 form a closed pipeline suspension structure, making the two ends of the pipeline face one in front and one behind. At the same time, through the rotation of the rotating column 2 and the drive of the adjusting members, the inside and outside of the pipeline are synchronously sprayed while the pipeline swings back and forth and rotates self - clockwise.

[0020] As Figures 5 - 7 shown, the positioning assembly 3 includes a mounting sleeve 301 sleeved on the rotating column 2 and limiting rings 302 located on both sides of the mounting sleeve 301. A positioning structure for positioning the flexible traction member 5 is arranged on the mounting sleeve 301. A positioning frame 303 is mounted on the two groups of limiting rings 302. A lifting drive member 304 is arranged on the positioning frame 303 to drive the positioning seat 305 to press down onto the positioning structure to position the flexible traction member 5.

[0021] It should be further noted that the lifting drive member 304 is set as a lifting cylinder, the cylinder body is located on the positioning frame 303, and the telescopic rod end is connected to the positioning seat 305.

[0022] It should be further noted that the positioning seat 305 is arc - shaped, the concave surface faces the mounting sleeve 301, and anti - slip strips 306 are provided.

[0023] It should be further noted that the rotating column 2 can be driven by a motor to rotate in both forward and reverse directions as a whole.

[0024] Before spraying, remove the flexible traction member 5 and pass it through the pipeline until the pipeline is located at the position of the positioning assembly 3. By pressing the positioning seat 305 down to fit the mounting sleeve 301, the upper end of the flexible traction member 5 can be fixed, forming a closed pipeline suspension structure. By using the rotation of the rotating column 2, the pipeline suspension structure can be driven to swing back and forth.

[0025] It should be further noted that the flexible traction member 5 is a steel rope; the positioning structure includes a positioning groove provided on the mounting sleeve 301; the positioning groove is within the coverage range of the positioning seat 305, and a fixing rod 307 is provided in the groove. The end of the steel rope is initially fixed by winding around the fixing rod 307, and then the positioning seat 305 is pressed down to cover the positioning groove and press the end of the steel rope for secondary fixing.

[0026] As Figures 8 - 9 shown, the internal spraying assembly 6 includes a support rod 601; both ends of the support rod 601 are respectively connected to the lower ends of the flexible traction members 5 on the corresponding sides. The support rod 601 is provided with a spraying hole 602 along its length direction, and a feed pipe 603 connecting the spraying hole 602 and the paint storage end is also provided on the support rod 601; the adjusting members are arranged in a mirror image on the left and right of the support rod 601.

[0027] It should be further noted that the spraying hole 602 is located at the bottom of the support rod 601.

[0028] Before spraying, the pipeline is suspended on the support rod 601. External paint is introduced into the support rod 601 through the feed pipe 603, and the inner wall of the pipeline is sprayed downward through the spraying hole 602.

[0029] The adjusting member includes a sliding sleeve 604 slidably arranged on the support rod 601; an adjusting ring 606 is arranged on the mouth of the sliding sleeve 604, and a vibrating member 607 and a fixing member 605 are arranged on the sleeve body.

[0030] It should be further noted that the vibrating member 607 drives the pipeline to vibrate by generating vibration, so that the sprayed anticorrosive layer is evenly distributed.

[0031] It should be further noted that the fixing member 605 is set as a fastening screw; the support rod 601 is provided with upper and lower guiding grooves 613; the sliding sleeve 604 is provided with a slider cooperating with the upper guiding groove 613 and a fixing hole cooperating with the lower guiding groove 613; the fastening screw is screwed into the lower guiding groove 613 through the fixing hole to achieve the purpose of fixing the adjusting member.

[0032] An arc-shaped groove 609 is arranged at the upper end of the adjusting ring 606; a slidable adjusting frame 608 is arranged in the arc-shaped groove 609; on the side of the adjusting frame 608 facing the pipeline, an adjusting roller 612 is provided which moves up and down to fit the outer wall of the pipeline opening and drives the pipeline to rotate synchronously by rotation.

[0033] It should be further noted that the adjusting frame 608 is strip-shaped and slides along an arc-shaped track, and is provided with an electric slide rail 612 for driving the adjusting roller 612 to move up and down.

[0034] It should be further noted that a first fixing hole 614 is provided on the groove wall of the arc-shaped groove 609; a second fixing hole is provided on the adjusting frame 608; when positioning the adjusting frame 608, a bolt passes through the first fixing hole 614, one end is threadedly connected to the second fixing hole, and the other end is threadedly connected to a nut.

[0035] It should be further noted that multiple sets of adjusting rollers 612 are provided, which are respectively driven to rotate by corresponding motors, and the length direction is horizontal with the length direction of the support rod 601.

[0036] When positioning the pipeline, first, the pipeline is suspended on the support rod 601. The adjusting ring 606 is made to fit the two ends of the pipeline by sliding the sliding sleeve 604, and then the sliding sleeve 604 is fixed by the fixing member 605 to preliminarily limit the pipeline. At this time, the adjusting roller 612 is located above the pipeline. Then, the position of the adjusting frame 608 is slid along the pipeline opening, and the adjusting roller 612 is operated to descend until it fits the outer wall of the pipeline opening. The bolt passes through the first fixing hole 614, one end is threadedly connected to the second fixing hole, and the other end is threadedly connected to a nut to fix the adjusting frame 608, completing the secondary limitation of the pipeline. Finally, during spraying, the adjusting rollers 612 at both ends of the pipeline rotate synchronously in one direction to drive the pipeline suspended on the support rod 601 to rotate synchronously. During the rotation of the pipeline, in cooperation with vibration, the rotation of the rotating column 2 can also be used to swing back and forth, and finally the inner and outer walls are sprayed under various moving trajectories.

[0037] As Figure 10 shown, the external spraying seat 4 includes a lifting platform 401 located between the support rod 601 and the rotating column 2; the lifting platform 401 is slidably arranged on the spraying frame 1 and penetrates through all the pipeline suspension structures. A spraying plate 402 with a second spraying hole corresponding to the support rod 601 is provided at the bottom of the lifting platform 401. A limiting member 403 acting on the flexible traction member 5 and a feed pipe two communicating the second spraying hole and the paint storage end are also provided on the lifting platform 401.

[0038] An electric slide rail two 101 is provided on the spraying frame 1; the lifting platform 401 is lifted between the support rod 601 and the rotating column 2 by cooperating with the electric slide rail two 101 to adjust the spraying height of its outer wall of the pipeline. Since the spraying plate 402 corresponds to the support rod 601 one by one, and in cooperation with the rotation and vibration of the pipeline, the spraying of the outer wall of the pipeline is efficient and uniform.

[0039] As Figure 11 shown, the limiting member 403 is an annular ring with a notch 404, which is installed on the front and rear sides of the lifting platform 401 corresponding to the position of the spraying plate 402; the notch 404 is located on the side of the annular ring; after binding and pressing the upper end of the flexible traction member 5, the lower end is further limited by passing through the annular ring. During the rotation and back-and-forth swing of the pipeline, the limiting member 403 always limits the flexible traction member 5 to prevent entanglement.

[0040] AsFigure 10 As shown in the figure, the recovery base 7 includes a recovery table 701 located below the support rod 601 and slidably arranged on the spraying rack 1; the recovery table 701 is opposite to the lifting table 401 in position, and a recovery pool 702 is arranged at the upper end; a slag blocking net 703 is arranged on the opening of the recovery pool 702.

[0041] It should be further noted that a negative pressure is formed in the recovery pool 702 through the operation of a vacuum device to collect the paint in the air.

[0042] It should be further noted that an electric slide rail three 102 is arranged on the spraying rack 1; the recovery table 701 is lifted and lowered below the support rod 601 by cooperating with the electric slide rail three 102 to adjust the recovery height of the overflowing paint and reduce environmental pollution.

[0043] As Figure 12 shown in the figure, the air supply and drying base 8 includes an air supply and drying table 801 slidably arranged at the front and rear ends of the spraying rack 1; a fan 802 is arranged on the air supply and drying table 801. An electric slide rail four 103 is arranged on the spraying rack 1; the air supply and drying table 801 is lifted and lowered at both ends of the spraying rack 1 by cooperating with the electric slide rail four 103 to adjust its air supply height to match the suspended pipeline and accelerate the ventilation and drying after spraying.

[0044] It should be further noted that when the pipeline is suspended, the pipe orifice is opposite to the fan 802 to enhance air circulation and accelerate drying.

[0045] Embodiment 2, based on the anti-corrosion coating spraying equipment in Embodiment 1, this embodiment proposes an anti-corrosion coating spraying method, and the steps are as follows: S1. Remove the flexible traction member 5 at one end of the pipeline suspension structure, pass the flexible traction member 5 through the pipeline and move the pipeline to the position of the support rod 601; wind the flexible traction member 5 around the fixed rod 307 for preliminary fixation, limit the lower end by passing through the annular ring, and then use the positioning seat 305 to press down and cover the positioning groove to press the end of the steel rope for secondary fixation; S2. Make the adjusting ring 606 fit the two pipe orifices of the pipeline by sliding the sliding sleeve 604, and then fix the sliding sleeve 604 with the fixing member 605 to preliminarily limit the pipeline; at this time, the adjusting roller 612 is located above the pipeline, and then slide the adjusting frame 608 along the pipe orifice, and operate the adjusting roller 612 to descend to fit the outer wall of the pipe orifice; the bolt passes through the first fixing hole 614, one end is threadedly connected to the second fixing hole, and the other end is threadedly connected to the nut to fix the adjusting frame 608 to complete the secondary limitation of the pipeline; S3. Repeat the above operations to complete the suspension of all pipelines in sequence, so that the pipeline heights are the same, and the pipe orifices face the fans 802 at both ends; S4. On the one hand, the adjusting rollers 612 at both ends of the pipeline rotate synchronously in one direction to drive the pipeline suspended on the support rod 601 to rotate synchronously; on the other hand, the reciprocating rotation of the rotating column 2 drives the pipeline to swing back and forth. S5. Spraying starts during the vibration, rotation, and swinging of the pipeline. The first feed pipe 603 introduces external paint into the support rod 601 and sprays downward onto the inner wall of the pipeline through the first spraying hole 602; the spraying plate 402 descends to an appropriate height and sprays onto the outer wall of the pipeline from above. S6. The recovery table 701 recovers the overflowing paint. S7. After spraying is completed, the fan 802 ventilates and dries the suspended pipeline.

[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to this. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. An anti-corrosion coating spraying equipment, characterized in that: include: A spraying frame (1), wherein a liftable air supply drying seat (8) is disposed at the front and rear of the spraying frame (1), and a rotatable rotating column (2), a liftable external spraying seat (4) and a liftable recovery seat (7) are disposed in the spraying frame (1) in order from top to bottom; the external spraying seat (4) sprays the outer wall of the pipeline from above; Flexible traction members (5), the flexible traction members (5) are matched in pairs and arranged one after the other on both sides of the external spraying seat (4) and the rotating column (2); A positioning component (3), the positioning component (3) being arranged on the rotating column (2), and being arranged in one-to-one correspondence with each pair of flexible traction members (5), and being used for positioning the upper ends of the corresponding flexible traction members (5); and an internal spraying assembly (6), wherein the middle portion of the internal spraying assembly (6) penetrates the interior of the pipeline, and both ends extend out of the pipeline and are respectively provided with adjusting members, and the ends of the internal spraying assembly (6) are connected to the lower end of the corresponding flexible traction member (5), and the internal spraying assembly (6) sprays the inner wall of the pipeline from the inside; The distance between the two sets of adjusting parts can be adjusted, which can position the pipeline from both ends and drive the pipeline to rotate from both ends. The rotating column (2), the positioning component (3), the flexible traction member (5) and the internal spraying component (6) form a closed pipe suspension structure, so that the two ends of the pipe face forward and backward, and the rotating column (2) is rotated and the adjusting member is driven to achieve synchronous spraying inside and outside while the pipe swings forward and backward and rotates.

2. The anti-corrosion coating spraying equipment according to claim 1, characterized in that: The positioning assembly (3) comprises a mounting sleeve (301) sleeved on the rotating column (2) and limiting rings (302) located on both sides of the mounting sleeve (301); A positioning structure for positioning the flexible traction member (5) is provided on the mounting sleeve (301); The positioning frame (303) is mounted on the two sets of limiting rings (302); The lifting drive member (304) is arranged on the positioning frame (303) and drives the positioning seat (305) to be pressed down onto the positioning structure to position the flexible traction member (5).

3. The anti-corrosion coating spraying equipment according to claim 2, characterized in that: The flexible traction member (5) is a steel rope; The positioning structure comprises a positioning groove provided on the mounting sleeve (301); the positioning groove is located within the coverage range of the positioning seat (305), and a fixing rod (307) is provided in the groove.

4. The anti-corrosion coating spraying equipment according to claim 1, characterized in that: The internal spraying assembly (6) comprises a support rod (601); the two ends of the support rod (601) are respectively connected to the lower ends of the corresponding side flexible traction members (5); a spraying hole (602) is arranged along the length direction of the support rod (601); and a feed pipe (603) is also arranged on the support rod (601) to connect the spraying hole (602) and the paint storage end; The adjusting members are arranged on the support rod (601) in a mirror-image manner, one on the left and one on the right.

5. The anti-corrosion coating spraying equipment according to claim 4, characterized in that: The adjusting member comprises a sliding sleeve (604) slidably arranged on the support rod (601); an adjusting ring (606) is arranged on the sleeve opening of the sliding sleeve (604); and a vibrating member (607) and a fixing member (605) are arranged on the sleeve body; An arc-shaped groove (609) is provided at the upper end of the adjustment ring (606); a slidable adjustment frame (608) is provided in the arc-shaped groove (609); and an adjustment roller (612) is provided on the side of the adjustment frame (608) facing the pipeline, which can be adjusted to fit the outer wall of the pipeline opening by moving up and down, and can drive the pipeline to rotate synchronously by rotating.

6. The anti-corrosion coating spraying equipment according to claim 4, characterized in that: The external spraying seat (4) comprises a lifting platform (401) located between the support rod (601) and the rotating column (2); the lifting platform (401) is slidably arranged on the spraying frame (1) and penetrates all the pipeline suspension structures; a spraying plate (402) with two spraying holes corresponding to the support rod (601) is arranged at the bottom of the lifting platform (401); a limiter (403) acting on the flexible traction member (5) and a feed pipe (2) connecting the two spraying holes and the paint storage end are also arranged on the lifting platform (401).

7. The anti-corrosion coating spraying equipment according to claim 6, characterized in that: The limiting member (403) is an annular ring with a notch (404), and is installed on the front and rear sides of the lifting platform (401) corresponding to the position of the spraying plate (402); The notch (404) is located on the side of the annular ring.

8. The anti-corrosion coating spraying equipment according to claim 7, characterized in that: The recovery seat (7) comprises a recovery platform (701) located below the support rod (601) and slidably arranged on the spraying frame (1); the recovery platform (701) is opposite to the lifting platform (401), and a recovery pool (702) is arranged at the upper end; and a slag blocking net (703) is arranged on the opening of the recovery pool (702).

9. The anti-corrosion coating spraying equipment according to claim 1, characterized in that: The air supply drying seat (8) comprises an air supply drying table (801) slidably arranged at the front and rear ends of the spraying frame (1); a fan (802) is arranged on the air supply drying table (801).

10. The anti-corrosion coating spraying equipment according to claim 9, characterized in that: When the pipeline is hung, the pipe mouth is opposite to the fan (802).

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