Polyurethane heat-preservation pipe outer surface spraying device

Abstract

The present application relates to the technical field of heat preservation pipeline processing, in particular to a polyurethane heat preservation pipeline outer surface uniform spraying device; aims to solve the problems of uneven polishing, uneven paint spraying, low efficiency, high cost and safety hazards existing in the traditional manual processing of polyurethane heat preservation pipeline welding parts; the device drives the support ring to rotate through the driving mechanism, so that the polishing mechanism and the paint spraying mechanism move in a ring shape, achieving uniform processing of the welding part; the polishing mechanism adopts double polishing mode, first rough polishing and then fine polishing; the paint spraying mechanism cooperates with the paint storage assembly to realize stable paint conveying and uniform paint spraying; the supporting mechanism ensures the stability of the pipeline; the device improves the work efficiency and quality, reduces the labor intensity, production cost and safety hazards.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat preservation pipeline processing, and particularly relates to a polyurethane heat preservation pipeline outer surface uniform spraying device. BACKGROUND

[0002] In the installation and maintenance process of polyurethane heat preservation pipelines, welding between pipelines is a common operation. After welding is completed, the quality of the welding part and subsequent processing are crucial. On the one hand, the welding part surface often has problems such as unevenness, burrs, and oxide layers. If polishing is not performed, not only will the appearance of the pipeline be affected, but the pipeline's service life may also be reduced. On the other hand, the polished welding part needs to be protected in a timely manner to prevent rust and other problems. Currently, a paint spraying method is usually used to form a protective coating.

[0003] The traditional method of processing the welding part of a polyurethane heat preservation pipeline has many drawbacks. In the polishing process, manual polishing tools are often used for operation. This method not only has high labor intensity and low work efficiency, but also makes it difficult to ensure uniform polishing quality, and over-polishing or under-polishing may occur. At the same time, due to the instability of manual operation, it is difficult to polish the welding part comprehensively and carefully, especially for pipelines with large diameters, manual polishing is difficult to achieve ideal results.

[0004] In the paint spraying process, there are also some problems. Manual paint spraying cannot ensure the uniformity of paint spraying, and may cause inconsistent paint spraying thickness, affecting the quality of the protective coating. Moreover, paint waste is serious during manual paint spraying, increasing production costs. In addition, manual operation also has certain safety hazards, such as harmful substances in paint that may harm the health of the operator.

[0005] With the continuous expansion of pipeline engineering scale and the increasing requirements for pipeline quality, the traditional method of processing the welding part of a polyurethane heat preservation pipeline cannot meet the actual needs. Therefore, the present technical solution provides a polyurethane heat preservation pipeline outer surface uniform spraying device. SUMMARY

[0006] The present application provides a polyurethane heat preservation pipeline outer surface uniform spraying device, which solves the problems of uneven polishing, uneven paint spraying, low efficiency, high cost, and safety hazards in the traditional manual processing of the welding part of a polyurethane heat preservation pipeline.

[0007] The present application provides the following technical solutions:

[0008] The utility model provides a kind of polyurethane heat preservation pipeline outer surface even spraying device, including construction frame, rotationally connected with support ring in construction frame, driving mechanism is installed on the construction frame, one side of driving mechanism extends to construction frame and is connected with support ring, the even spraying device further includes:

[0009] Polishing mechanism is arranged in support ring, to carry out double polishing to the welding portion formed after welding of two heat preservation pipeline bodies;

[0010] Paint spraying mechanism is installed in support ring, one side of paint spraying mechanism extends to the outside of construction frame, paint spraying mechanism is used to paint after polishing welding portion, to the portion of polishing, so that protective coating can be formed;

[0011] Support mechanism is arranged on the both sides of construction frame, and two support mechanisms are used for clamping and positioning heat preservation pipeline body to be welded respectively, so that two heat preservation pipeline bodies can be kept in stable position without change when polishing welding portion and painting.

[0012] In a possible design, the driving mechanism includes a gear ring fixedly sleeved on the support ring, a drive motor is fixedly installed on one side of the construction frame, an output shaft of the drive motor extends into the construction frame and is fixedly installed with a driving gear, and the driving gear is engaged with the gear ring.

[0013] In a possible design, the polishing mechanism includes a mounting box fixedly installed in the support ring, a moving box is slidingly connected in the mounting box, two sliding guide rods are fixedly installed on the top and bottom of the moving box, support plates are fixedly installed on the top and bottom inner walls of the mounting box, two sliding guide rods at the same height penetrate through the corresponding support plates and are slidingly connected with the support plates to achieve sliding limiting of the moving box, an electric push rod is fixedly installed in the moving box on one side inner wall of the mounting box, an output shaft of the electric push rod is fixedly connected with one side inner wall of the moving box, a mounting bracket is fixedly installed on one side of the electric push rod outside the mounting box, a servo motor is fixedly installed on one side of the mounting bracket, an output shaft of the servo motor extends into the mounting bracket and is fixedly installed with a grinding disc, and the grinding disc is used for preliminary polishing of the welding portion.

[0014] In a possible design, the polishing mechanism further includes a sandpaper belt sleeved on the welding portion of the two heat preservation pipeline bodies, a perforation is formed on the top inner wall of the mounting box, the sandpaper belt penetrates through the perforation and the support plate above, a first clamping assembly is arranged on the bottom of one side of the mounting box, the first clamping assembly is used for positioning and clamping the bottom of the sandpaper belt, and a second clamping assembly is arranged on the top of one side of the moving box, and the second clamping assembly is used for clamping and positioning the top of the sandpaper belt.

[0015] In a possible design, the first clamping assembly includes a supporting plate fixedly installed at the bottom of one side of the installation box, a rotating pressing plate rotatably connected to the top of the supporting plate, and the bottom of the sandpaper belt is located between the supporting plate and the rotating pressing plate, the rotating pressing plate is used for clamping and positioning the bottom of the sandpaper belt, two positioning plates are symmetrically fixedly installed at the top of the supporting plate, a first inserting rod is slidably connected through the positioning plates, two first butt plates are symmetrically fixedly installed at the top of the rotating pressing plate, the first inserting rod penetrates through the corresponding first butt plate and is insertedly connected with the first butt plate, a first extension spring is sleeved on the first inserting rod, and the two ends of the first extension spring are fixedly connected with one side of the positioning plate and one end of the first inserting rod respectively through the hooks arranged at the two ends of the first extension spring.

[0016] In a possible design, the second clamping assembly includes two positioning screws symmetrically fixedly installed at the top of one side of the moving box, a moving pressing plate sleeved on the two positioning screws, the moving pressing plate is used for pressing the top of the sandpaper belt, two positioning nuts are rotatably connected to one side of the moving pressing plate, and the two positioning nuts are sleeved on the corresponding positioning screws and are threadedly connected with the positioning screws.

[0017] In a possible design, the paint spraying mechanism includes a ring-shaped conveying box fixedly installed in the construction frame, a sealing ring sealingly and rotatably connected to the opening of the inner side of the ring-shaped conveying box, a booster pump fixedly installed on the inner bottom wall of the support ring, a first conveying pipe fixedly installed on the output end of the booster pump, a conical nozzle fixedly installed on the suction end of the booster pump, one end of the conical nozzle penetrating through the sealing ring and being fixedly connected with the sealing ring, a butt pipe fixedly installed through the inner wall of one side of the ring-shaped conveying box, and a paint storage assembly arranged on one side of the construction frame.

[0018] In a possible design, the paint storage assembly includes an equipment frame arranged on one side of the construction frame, a conveying pump and a paint tank fixedly installed on the equipment frame respectively, a bend pipe fixedly installed on the suction end of the conveying pump, the top end of the bend pipe extending into the outlet of the paint tank and being fixedly connected with the inner wall of the outlet, a second conveying pipe fixedly installed on the output end of the conveying pump, one end of the second conveying pipe being clamped with one end of the butt pipe, a stepping motor fixedly installed at the top of the paint tank, an output shaft of the stepping motor extending into the paint tank and being fixedly installed with a support shaft, a stirring frame fixedly sleeved on the support shaft, and a filling pipe fixedly installed through the inner wall of one side of the top of the paint tank.

[0019] In a possible design, the supporting mechanism comprises a base frame fixedly installed on one side of the construction frame, a bracket fixedly installed on the top of the base frame, a plurality of supporting wheels rotatably connected to the bracket at equal intervals, the bracket and the plurality of supporting wheels being used for supporting the thermal insulation pipe body, two supporting frames fixedly installed on the supporting wheels in a symmetrical manner, a rotating frame rotatably connected in the supporting frame, a clamping plate fixedly installed on one side of the rotating frame extending to the outside of the supporting frame, and the clamping plate being used for positioning and clamping the thermal insulation pipe body.

[0020] In a possible design, two supporting rings are fixedly installed on the supporting frame in a symmetrical manner, a second insertion rod is slidably connected through the supporting ring, two second butt plates are fixedly installed on the rotating frame in a symmetrical manner, the second insertion rod penetrates through the corresponding second butt plate and is clamped with the second butt plate, and a second extension spring is further sleeved on the second insertion rod, the two ends of the second extension spring are respectively fixedly connected with one side of the supporting ring and one end of the second insertion rod through the hooks arranged at the two ends of the second extension spring.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application.

[0022] Beneficial effects: in the present application, the driving mechanism is arranged, the driving motor can drive the driving gear to rotate, the supporting ring can be driven to rotate under the meshing transmission of the gear ring, the polishing mechanism and the paint spraying mechanism can be driven to move in a ring shape, the welded part can be uniformly polished and then painted, the welded part of the two thermal insulation pipe bodies can be protected after the two thermal insulation pipe bodies are connected, and rusting and other problems can be avoided in the later period.

[0023] In the present application, the polishing mechanism is arranged, the electric push rod is started to move the moving box to the outside of the mounting box, the grinding disc can be driven to move close to the welded part, the servo motor is started to drive the grinding disc to rotate at high speed, the welded part can be preliminarily polished by the grinding disc, the mounting box can move in a ring shape with the supporting ring, the grinding disc can move in a ring shape, and the welded part can be fully polished, which is convenient for automatic processing of the welded part.

[0024] After the sandpaper belt is respectively threaded through the perforations and the support plate located above, the top and bottom of the sandpaper belt are stably connected with the first clamping assembly and the second clamping assembly respectively, and then when the electric push rod is started to drive the moving box to move to the outside of the installation box, the sandpaper belt can be pulled by the moving box. Under the action of the perforations, the sandpaper belt can be contracted inward, so that the sandpaper belt is tightly attached to the welding part. Then when the installation box moves in a ring shape with the support ring, the sandpaper belt can be driven to move, so that the sandpaper belt forms a friction effect with the welding part, thereby the sandpaper belt can be used to further polish the welding part after the welding part is roughly polished by the grinding disc

[0025] In the present application, after the sandpaper belt is used to polish the welding part, the sandpaper belt can be removed, and then the paint can be conveyed into the annular conveying box through the oil paint storage assembly. Then, by starting the booster pump, the paint in the annular conveying box can be conveyed into the conical spray head through the first conveying pipe. Then, the paint can be accurately sprayed on the polished welding part through the conical spray head. When the support ring rotates, the first conveying pipe can be driven to move in a ring shape by the booster pump. At this time, since the sealing ring is in sealing and rotating connection with the annular conveying box, the paint will not leak and the normal ring movement of the booster pump will not be affected, so that the welding part can be fully painted.

[0026] In the present application, after the sandpaper belt is used to polish the welding part, the sandpaper belt can be removed, and then the paint can be conveyed into the annular conveying box through the oil paint storage assembly. Then, by starting the booster pump, the paint in the annular conveying box can be conveyed into the conical spray head through the first conveying pipe. Then, the paint can be accurately sprayed on the polished welding part through the conical spray head. When the support ring rotates, the first conveying pipe can be driven to move in a ring shape by the booster pump. At this time, since the sealing ring is in sealing and rotating connection with the annular conveying box, the paint will not leak and the normal ring movement of the booster pump will not be affected, so that the welding part can be fully painted.

[0027] The polyurethane heat preservation pipeline outer surface spraying device provided by the present application solves the problem of traditional manual processing of the welding part. Stable clamping positioning, automatic polishing and uniform painting are realized through the mechanical device, which improves the work efficiency and quality, ensures uniform processing effect, reduces labor intensity, production cost and safety hidden danger. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The first perspective structure three-dimensional schematic view of the polyurethane heat preservation pipeline outer surface spraying device provided by the present application;

[0029] Figure 2 The second perspective structure three-dimensional schematic view of the polyurethane heat preservation pipeline outer surface spraying device provided by the present application;

[0030] Figure 3The three-dimensional schematic view of the equipment frame sectional structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0031] Figure 4 The three-dimensional schematic view of the equipment frame, support ring, booster pump, annular conveying box, sealing ring and second conveying pipe connecting structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0032] Figure 5 The schematic view of the equipment frame sectional structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0033] Figure 6 The three-dimensional schematic view of the mounting box and sandpaper belt connecting structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0034] Figure 7 The schematic view of the mounting box sectional structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0035] Figure 8 The three-dimensional schematic view of the paint box sectional structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0036] Figure 9 The schematic view of the supporting mechanism structure of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application;

[0037] Figure 10 The three-dimensional schematic view of the structure of the two heat preservation pipelines butt joint of the polyurethane heat preservation pipeline outer surface uniform spraying device provided by the embodiment of the present application.

[0038] Reference signs:

[0039] 1, construction frame; 2, support ring; 3, arc-shaped limiting plate; 4, annular groove; 5, driving motor; 6, driving gear; 7, gear ring; 8, mounting box; 9, moving box; 10, electric push rod; 11, support plate; 12, sliding guide rod; 13, mounting frame; 14, servo motor; 15, grinding disc; 16, supporting plate; 17, rotating pressing plate; 18, sandpaper belt; 19, positioning plate; 20, first inserting rod; 21, first butt joint plate; 22, first tension spring; 23, positioning screw; 24, moving pressing plate; 25, positioning nut; 26, arc-shaped protective cover; 27, annular conveying box; 28, sealing ring; 29, booster pump; 30, first conveying pipe; 31, conical nozzle; 32, butt joint pipe; 33, second conveying pipe; 34, equipment frame; 35, conveying pump; 36, paint box; 37, injection pipe; 38, stepping motor; 39, support shaft; 40, stirring frame; 41, elbow pipe; 42, base frame; 43, bracket; 44, supporting wheel; 45, support frame; 46, rotating frame; 47, supporting ring; 48, second inserting rod; 49, second butt joint plate; 50, second tension spring; 51, clamping plate; 52, heat preservation pipeline body; 53, welding portion. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0041] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection, can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative position relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of the drawing, therefore, the orientation language used is to better and more clearly illustrate and understand the embodiments of the present application, and is not indicative or implied that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0042] In the embodiments of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features.

[0043] In the embodiments of the present application, "and / or" is only used to describe the relationship of the associated objects, and means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0044] Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments" and so on in various places in the specification are not necessarily all referring to the same embodiment, unless otherwise specifically stated. The terms "comprising", "including", "having" and their variants mean "including but not limited to", unless otherwise specifically indicated.

[0045] Embodiment 1: Reference Figures 1-10 A uniform spraying device comprises a construction frame 1, a support ring 2, a driving mechanism, a polishing mechanism, a paint spraying mechanism and a supporting mechanism. The construction frame 1 serves as a support frame of the entire device. The support ring 2 is rotatably connected inside the construction frame 1. Arc-shaped limiting plates 3 are fixedly installed on the inner walls of both sides of the construction frame 1. Ring-shaped grooves 4 are formed on both sides of the support ring 2. One side of the arc-shaped limiting plate 3 extends into the corresponding ring-shaped groove 4 and is slidably connected with the inner wall of the ring-shaped groove 4.

[0046] As shown in Figures 3-4 , the driving mechanism comprises a gear ring 7, a driving motor 5, a driving gear 6 and an arc-shaped protective cover 26. The gear ring 7 is fixedly sleeved on the support ring 2. The driving motor 5 is fixedly installed on one side of the construction frame 1. The output shaft of the driving motor 5 extends into the construction frame 1 and is fixedly installed with the driving gear 6. The driving gear 6 is engaged with the gear ring 7. The arc-shaped protective cover 26 is fixedly installed on the construction frame 1 and is used for protecting the gear ring 7. Starting the driving motor 5 drives the driving gear 6 to rotate. Through the engagement transmission with the gear ring 7, the support ring 2 is rotated, thereby driving the polishing mechanism and the paint spraying mechanism to move in a circular motion, so as to realize uniform treatment of the welding part 53.

[0047] As shown in Figures 6-7As shown, the polishing mechanism comprises a mounting box 8, a moving box 9, sliding guide rods 12, support plates 11, an electric push rod 10, a mounting frame 13, a servo motor 14, a grinding wheel disc 15, a sandpaper belt 18, a first clamping assembly and a second clamping assembly. The mounting box 8 is fixedly installed in the support ring 2, and the moving box 9 is slidingly connected in the mounting box 8. Two sliding guide rods 12 are fixedly installed at the top and the bottom of the moving box 9 respectively, and the inner walls at the top and the bottom of the mounting box 8 are fixedly installed with support plates 11 respectively. The two sliding guide rods 12 at the same height penetrate through the corresponding support plates 11 and are slidingly connected therewith, so as to slidingly position the moving box 9. The electric push rod 10 is fixedly installed on the inner wall of one side of the mounting box 8 and located in the moving box 9, and the output shaft thereof is fixedly connected with the inner wall of one side of the moving box 9. The mounting frame 13 is fixedly installed on the side of the electric push rod 10 located outside the mounting box 8, the servo motor 14 is fixedly installed on one side of the mounting frame 13, the output shaft thereof extends into the mounting frame 13 and is fixedly installed with the grinding wheel disc 15. The inner wall at the top of the mounting box 8 is provided with a through hole, and the sandpaper belt 18 is sleeved on the welded part of the two heat preservation pipeline bodies 52 and penetrates through the through hole and the support plate 11 located above respectively.

[0048] As shown in Figure 6 , the first clamping assembly comprises a supporting plate 16, a rotating pressing plate 17, a positioning plate 19, a first inserting rod 20, a first butt plate 21 and a first tension spring 22. The supporting plate 16 is fixedly installed at the bottom of one side of the mounting box 8, the rotating pressing plate 17 is rotatably connected at the top of the supporting plate 16, and the bottom of the sandpaper belt 18 is located between the supporting plate 16 and the rotating pressing plate 17. Two positioning plates 19 are symmetrically fixedly installed at the top of the supporting plate 16, the first inserting rod 20 penetrates and slidingly connects with the positioning plates 19, two first butt plates 21 are symmetrically fixedly installed at the top of the rotating pressing plate 17, and the first inserting rod 20 penetrates and is insertedly connected with the corresponding first butt plate 21. The first tension spring 22 is sleeved on the first inserting rod 20, and the hooks at both ends thereof are fixedly connected with one side of the positioning plate 19 and one end of the first inserting rod 20 respectively.

[0049] As shown in Figure 6 , the second clamping assembly comprises a positioning screw 23, a moving pressing plate 24 and a positioning nut 25. Two positioning screws 23 are symmetrically fixedly installed at the top of one side of the moving box 9, the moving pressing plate 24 is sleeved on the two positioning screws 23 and is used for pressing the top of the sandpaper belt 18. Two positioning nuts 25 are symmetrically rotatably connected at one side of the moving pressing plate 24 and are sleeved on the corresponding positioning screws 23 and are threadedly connected therewith.

[0050] When polishing the welding part 53, first start the electric push rod 10 to move the moving box 9 outward relative to the mounting box 8, drive the grinding disc 15 to approach the welding part 53, and then start the servo motor 14 to drive the grinding disc 15 to rotate at high speed, thereby preliminarily polishing the welding part 53. At the same time, pass the sandpaper belt 18 through the through hole and the upper support plate 11 respectively, lay the bottom of the sandpaper belt 18 on the supporting plate 16, turn the pressing plate 17, make the first inserting rod 20 correspond to the first butt joint plate 21, release the first inserting rod 20, and drive the first stretching spring 22 to pass through the first butt joint plate 21 to form clamping and position the bottom of the sandpaper belt 18. Place the top of the sandpaper belt 18 between the moving box 9 and the moving pressing plate 24, turn the two positioning nuts 25 to drive the moving pressing plate 24 to approach the moving box 9, and position and clamp the top of the sandpaper belt 18. Then, start the electric push rod 10 again to move the moving box 9 outward, pull the sandpaper belt 18, and make it shrink inward under the action of the through hole to tightly adhere to the welding part 53. The mounting box 8 moves along with the support ring 2 in a ring shape, drives the sandpaper belt 18 to move, and forms friction with the welding part 53, thereby finely polishing the welding part 53.

[0051] As shown in Figures 4-5 , the paint spraying mechanism comprises a ring-shaped conveying box 27, a sealing ring 28, a booster pump 29, a first conveying pipe 30, a conical spray head 31 and a paint storage assembly. The ring-shaped conveying box 27 is fixedly installed in the construction frame 1, and the sealing ring 28 is sealingly and rotatably connected to the inner side opening of the ring-shaped conveying box 27. The booster pump 29 is fixedly installed on the bottom inner wall of the support ring 2, the first conveying pipe 30 is fixedly installed on the output end of the booster pump 29, the conical spray head 31 is fixedly installed on the suction end of the booster pump 29, and one end of the conical spray head 31 penetrates through the sealing ring 28 and is fixedly connected to the sealing ring 28. The butt joint pipe 32 is fixedly installed on the inner wall of one side of the ring-shaped conveying box 27.

[0052] As shown in Figure 8 , the paint storage assembly comprises an equipment rack 34, a conveying pump 35, a paint box 36, a stepping motor 38, a support shaft 39 and a stirring rack 40. The equipment rack 34 is located on one side of the construction frame 1, and the conveying pump 35 and the paint box 36 are fixedly installed on the equipment rack 34. The elbow pipe 41 is fixedly installed on the suction end of the conveying pump 35, the top end of the elbow pipe 41 extends into the outlet of the paint box 36 and is fixedly connected to the inner wall of the outlet. The second conveying pipe 33 is fixedly installed on the output end of the conveying pump 35, one end of the second conveying pipe 33 is clamped with one end of the butt joint pipe 32. The stepping motor 38 is fixedly installed on the top of the paint box 36, the output shaft of the stepping motor 38 extends into the paint box 36 and fixedly installs the support shaft 39, and the stirring rack 40 is fixedly sleeved on the support shaft 39. The injection pipe 37 penetrates through and is fixedly installed on the inner wall of one side of the top of the paint box 36.

[0053] After the grinding of the welding part 53 is completed, the used sandpaper belt 18 is removed. The paint is delivered into the paint tank 36 through the injection pipe 37, the stepping motor 38 is started to drive the stirring frame 40 to rotate, and the paint is stirred to avoid precipitation. The delivery pump 35 is started to suck the paint in the paint tank 36 out, and then the paint is delivered into the annular delivery tank 27 through the second delivery pipe 33 and the butt joint pipe 32. The booster pump 29 is started, and the paint is delivered into the first delivery pipe 30 through the conical nozzle 31 and sprayed on the ground welding part 53. When the support ring 2 rotates, the booster pump 29 and the first delivery pipe 30 move annularly. Since the sealing ring 28 is in sealing and rotating connection with the annular delivery tank 27, the paint is prevented from leaking and the normal movement of the booster pump 29 is ensured, so that the welding part 53 is fully sprayed.

[0054] The present application can be used in the field of thermal insulation pipe processing technology, and can also be used in other fields applicable to the present application.

[0055] Embodiment 2: Reference Figure 9 On the basis of embodiment one, an improved polyurethane thermal insulation pipe outer surface spraying device is applied to the field of thermal insulation pipe processing technology. The supporting mechanism includes a base frame 42, a bracket 43, a plurality of supporting wheels 44, supporting frames 45, rotating frames 46, clamping plates 51, supporting rings 47, second insertion rods 48, second butt joint plates 49, and second extension springs 50. The base frame 42 is fixedly installed on one side of the construction frame 1, the bracket 43 is fixedly installed on the top of the base frame 42, and the plurality of supporting wheels 44 are equidistantly and rotatably connected to the bracket 43 to support the thermal insulation pipe body 52. The two supporting frames 45 are symmetrically and fixedly installed on the supporting wheels 44, the rotating frames 46 are rotatably connected to the supporting frames 45, one side of the rotating frames 46 extends to the outside of the supporting frames 45 and is fixedly installed with the clamping plates 51 to position and clamp the thermal insulation pipe body 52. The two supporting rings 47 are symmetrically and fixedly installed on the supporting frames 45, the second insertion rods 48 are slidably connected to the supporting rings 47, the two second butt joint plates 49 are symmetrically and fixedly installed on the rotating frames 46, and the second insertion rods 48 pass through the corresponding second butt joint plates 49 and are clamped with the second butt joint plates 49. The second extension springs 50 are sleeved on the second insertion rods 48, and the hooks at both ends of the second extension springs 50 are fixedly connected with one side of the supporting rings 47 and one end of the second insertion rods 48, respectively.

[0056] The thermal insulation pipe body 52 is placed on the bracket 43 and supported by the plurality of supporting wheels 44. The two rotating frames 46 are turned over to position and clamp the thermal insulation pipe body 52 by the clamping plates 51. At this time, the second insertion rods 48 are in position correspondence with the second butt joint plates 49, the second insertion rods 48 are released, the second extension springs 50 drive the second insertion rods 48 to move transversely, pass through the second butt joint plates 49 to form clamping, position the rotating frames 46, and make the clamping plates 51 stably and tightly clamp and position the thermal insulation pipe body 52, so that the position of the thermal insulation pipe body 52 is stable during grinding and painting of the welding part 53.

[0057] Working principle: in use, first, two to be welded thermal insulation pipeline body 52 are placed on the support mechanism on both sides of the construction frame 1, the thermal insulation pipeline body 52 is placed on the plurality of supporting wheels 44 of the bracket 43 to realize rolling support, then the rotating frame 46 in the turnover support frame 45 is turned over, the clamping plate 51 is attached to the thermal insulation pipeline body 52, at this time the second inserting rod 48 is clamped through the second butt joint plate 49 under the action of the second tension spring 50 to form clamping, the stable clamping and positioning of the thermal insulation pipeline body 52 are completed; then the welding of the two thermal insulation pipeline bodies 52 is carried out at the joint to form the welded part 53, the driving motor 5 in the driving mechanism is started, the output shaft drives the driving gear 6 to rotate, the support ring 2 rotates in the construction frame 1 through the meshing transmission with the gear ring 7; when the support ring 2 rotates, the polishing mechanism is driven to operate, first, the electric push rod 10 is started to push the moving box 9 to move outward from the installation box 8, in the moving process, the servo motor 14 and the grinding disc 15 on the mounting frame 13 are driven to move close to the welded part 53, then the servo motor 14 is started to make the grinding disc 15 rotate at high speed, the welded part 53 is preliminarily and roughly polished, at the same time, the installation box 8 moves with the support ring 2 in a ring shape, driving the grinding disc 15 to polish the welded part 53 comprehensively; after the rough polishing is completed, the sandpaper belt 18 is passed through the perforation on the top of the installation box 8 and the upper support plate 11, the bottom is placed on the supporting plate 16, the rotating pressing plate 17 is turned over to press the sandpaper belt 18, the first inserting rod 20 is clamped and positioned through the first butt joint plate 21 under the action of the first tension spring 22, the top of the sandpaper belt 18 is placed between the moving box 9 and the moving pressing plate 24, the moving pressing plate 24 is pressed tightly to the sandpaper belt 18 by rotating the positioning nut 25, then the electric push rod 10 is started again to push the moving box 9, the sandpaper belt 18 is closely attached to the welded part 53 under the action of the perforation, the support ring 2 continues to rotate to drive the sandpaper belt 18 to rub against the welded part 53, realizing fine polishing; after the polishing is completed, the used sandpaper belt 18 is removed, the stepping motor 38 in the paint storage assembly is started, the output shaft drives the support shaft 39 and the stirring frame 40 to rotate in the paint box 36 to stir the paint, preventing precipitation, at the same time, the delivery pump 35 is started, the paint in the paint box 36 is sucked out through the elbow pipe 41, delivered to the annular delivery box 27 through the second delivery pipe 33 and the butt joint pipe 32, then the booster pump 29 is started, the paint in the annular delivery box 27 is delivered to the conical nozzle 31 through the first delivery pipe 30, finally sprayed on the polished welded part 53, when the support ring 2 rotates, the booster pump 29 and the first delivery pipe 30 move in a ring shape, because the sealing ring 28 is in sealing rotary connection with the annular delivery box 27, it is ensured that the paint does not leak and does not affect the normal movement of the booster pump 29, realizing comprehensive paint spraying protection treatment of the welded part 53, avoiding problems such as rusting in the later period.

[0058] However, as known to those skilled in the art, the working principles and wiring methods of the driving motor 5, the electric push rod 10, the servo motor 14, the booster pump 29, the delivery pump 35 and the stepping motor 38 are common, which all belong to conventional means or common general knowledge, and thus will not be described herein, and those skilled in the art can make any selection according to their needs or convenience.

[0059] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application; the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A polyurethane insulation pipe outer surface uniform spraying device, comprising a construction frame (1), wherein a support ring (2) is rotatably connected inside the construction frame (1), characterized in that, A drive mechanism is installed on the construction frame (1), one side of which extends into the construction frame (1) and connects to the support ring (2). The uniform spraying device also includes: A grinding mechanism is set inside the support ring (2) to perform double grinding on the welded part (53) formed after the two insulated pipe bodies (52) are welded together; The painting mechanism is installed in the support ring (2), and one side of the painting mechanism extends to the outside of the construction frame (1). The painting mechanism is used to paint the polished part after the welded part (53) is polished, so as to form a protective coating. The support mechanisms set on both sides of the construction frame (1) are used to clamp and position the insulation pipe body (52) to be welded, so that when the welding part (53) is ground and painted, the two insulation pipe bodies (52) can be kept in a stable position without changing. The grinding mechanism includes a mounting box (8) fixedly installed inside a support ring (2). A movable box (9) is slidably connected inside the mounting box (8). Two sliding guide rods (12) are fixedly installed at the top and bottom of the movable box (9). Support plates (11) are fixedly installed on the inner walls of the top and bottom of the mounting box (8). The two sliding guide rods (12) at the same height pass through the corresponding support plates (11) and are slidably connected to the support plates (11) to achieve sliding limit of the movable box (9). An electric push rod (10) located inside the movable box (9) is fixedly installed on the inner side wall. The output shaft of the electric push rod (10) is fixedly connected to the inner side wall of the movable box (9). A mounting bracket (13) is fixedly installed on the side of the electric push rod (10) located outside the mounting box (8). A servo motor (14) is fixedly installed on one side of the mounting bracket (13). The output shaft of the servo motor (14) extends into the mounting bracket (13) and a grinding wheel (15) is fixedly installed. The grinding wheel (15) is used to perform preliminary grinding on the welded part (53). The grinding mechanism also includes a sandpaper strip (18) fitted onto the weld joint of the two insulated pipe bodies (52). A perforation is provided on the top inner wall of the mounting box (8). The sandpaper strip (18) passes through the perforation and the support plate (11) located above. A first clamping assembly is provided on the bottom side of the mounting box (8). The first clamping assembly is used to position and clamp the bottom of the sandpaper strip (18). A second clamping assembly is provided on the top side of the moving box (9). The second clamping assembly is used to clamp and position the top of the sandpaper strip (18).

2. The polyurethane insulation pipe outer surface uniform spraying device according to claim 1, characterized in that, The drive mechanism includes a gear ring (7) fixedly sleeved on the support ring (2), a drive motor (5) fixedly installed on one side of the construction frame (1), the output shaft of the drive motor (5) extends into the construction frame (1) and a drive gear (6) is fixedly installed thereon, and the drive gear (6) meshes with the gear ring (7).

3. The polyurethane insulation pipe outer surface uniform spraying device according to claim 1, characterized in that, The first clamping assembly includes a tray (16) fixedly installed on the bottom of one side of the mounting box (8). A rotating pressure plate (17) is rotatably connected to the top of the tray (16). The bottom of the sandpaper strip (18) is located between the tray (16) and the rotating pressure plate (17). The rotating pressure plate (17) is used to clamp and position the bottom of the sandpaper strip (18). Two positioning plates (19) are symmetrically fixedly installed on the top of the tray (16). A first insert rod (20) is slidably connected through the positioning plate (19). Two first docking plates (21) are symmetrically fixedly installed on the top of the rotating pressure plate (17). The first insert rod (20) passes through the corresponding first docking plate (21) and is inserted and snapped into the first docking plate (21). A first tension spring (22) is sleeved on the first insert rod (20). The two ends of the first tension spring (22) are respectively fixedly connected to one side of the positioning plate (19) and one end of the first insert rod (20) through hooks set at both ends of the first tension spring (22).

4. The polyurethane insulation pipe outer surface uniform spraying device according to claim 1, characterized in that, The second clamping assembly includes two positioning screws (23) symmetrically fixedly installed on the top of one side of the movable box (9). The same movable pressure plate (24) is sleeved on the two positioning screws (23). The movable pressure plate (24) is used to press the top of the sandpaper strip (18). Two positioning nuts (25) are symmetrically rotatably connected on one side of the movable pressure plate (24). The two positioning nuts (25) are respectively sleeved on the corresponding positioning screws (23) and threadedly connected to the positioning screws (23).

5. The polyurethane insulation pipe outer surface uniform spraying device according to claim 1, characterized in that, The painting mechanism includes an annular conveyor box (27) fixedly installed in the construction frame (1), a sealing ring (28) is rotatably connected to the inner opening of the annular conveyor box (27), a booster pump (29) is fixedly installed on the bottom inner wall of the support ring (2), a first conveying pipe (30) is fixedly installed on the output end of the booster pump (29), a conical nozzle (31) is fixedly installed on the suction end of the booster pump (29), one end of the conical nozzle (31) passes through the sealing ring (28) and is tightly fixedly connected to the sealing ring (28), a connecting pipe (32) is fixedly installed through one side inner wall of the annular conveyor box (27), and a paint storage component is also provided on one side of the construction frame (1).

6. The polyurethane insulation pipe outer surface uniform spraying device according to claim 5, characterized in that, The paint storage assembly includes an equipment rack (34) located on one side of the construction frame (1). A delivery pump (35) and a paint tank (36) are fixedly installed on the equipment rack (34). A bent pipe (41) is fixedly installed on the suction end of the delivery pump (35). The top end of the bent pipe (41) extends into the outlet of the paint tank (36) and is fixedly connected to the inner wall of the outlet. A second delivery pipe (33) is fixedly installed on the output end of the delivery pump (35). One end of the second delivery pipe (33) is engaged with one end of the connecting pipe (32). A stepper motor (38) is fixedly installed on the top of the paint tank (36). The output shaft of the stepper motor (38) extends into the paint tank (36) and a support shaft (39) is fixedly installed. A mixing rack (40) is fixedly sleeved on the support shaft (39). An injection pipe (37) is fixedly installed through the inner wall of the top side of the paint tank (36).

7. The polyurethane insulation pipe outer surface uniform spraying device according to claim 1, characterized in that, The supporting mechanism includes a base frame (42) fixedly installed on one side of the construction frame (1). A bracket (43) is fixedly installed on the top of the base frame (42). Multiple rollers (44) are rotatably connected at equal intervals on the bracket (43). The bracket (43) and the multiple rollers (44) are used to support the insulation pipe body (52). Two support frames (45) are symmetrically fixedly installed on the rollers (44). A rotating frame (46) is rotatably connected inside the support frame (45). One side of the rotating frame (46) extends to the outside of the support frame (45) and is fixedly installed with a clamp (51). The clamp (51) is used to position and clamp the insulation pipe body (52).

8. The polyurethane insulation pipe outer surface uniform spraying device according to claim 7, characterized in that, Two rings (47) are symmetrically fixedly installed on the support frame (45). A second rod (48) is slidably connected through the ring (47). Two second mating plates (49) are symmetrically fixedly installed on the rotating frame (46). The second rod (48) passes through the corresponding second mating plate (49) and is engaged with the second mating plate (49). A second tension spring (50) is also sleeved on the second rod (48). The two ends of the second tension spring (50) are respectively fixedly connected to one side of the ring (47) and one end of the second rod (48) through hooks set at both ends of the second tension spring (50).

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