Thermal spraying equipment for pipe parts

Abstract

The utility model belongs to the field of part machining, and particularly discloses a pipe part thermal spraying device which comprises a clamping mechanism, a spraying mechanism and a cooling mechanism, the clamping mechanism comprises a clamping assembly and a supporting assembly, the clamping assembly is used for clamping a part from the end of the part, and the supporting assembly is used for supporting the side wall of the part; the spraying mechanism is used for spraying the parts; the cooling mechanism comprises a breather pipe and a nozzle, the nozzle communicates with the air outlet end of the breather pipe, and the inner diameter of an opening of the nozzle is smaller than that of the breather pipe. By adopting the scheme of the utility model, the problem that heat accumulation is easy to generate in the thermal spraying process can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of parts processing, and in particular relates to thermal spraying equipment for pipe parts. Background Art

[0002] Industries such as marine equipment, aerospace, metallurgy and chemical industry all have extreme working conditions of high temperature, high pressure, high corrosion and high wear. These fields often require a large number of pipe parts for material transportation, storage and energy conversion. The materials of conventional pipe parts will quickly wear and corrode and fail under extreme working conditions. Therefore, it is necessary to use thermal spraying technology to prepare coating protection on the inner or outer surface of pipe parts to improve the performance and life of the parts.

[0003] Since pipes are thin-walled parts, they are prone to overheating, overburning, and deformation due to heat accumulation during the thermal spraying process. Especially for pipe parts with a large aspect ratio, heat accumulation may cause workpiece deformation, coating cracking, coating shedding, uneven coating, unstable quality, and other problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a thermal spraying device for pipe parts to solve the problem of heat accumulation that is easily generated during the thermal spraying process.

[0005] According to the embodiment of the utility model, the utility model adopts the following technical solution:

[0006] Thermal spraying equipment for pipe parts includes a clamping mechanism, a spraying mechanism and a cooling mechanism. The clamping mechanism includes a clamping assembly and a supporting assembly. The clamping assembly is used to clamp the part from the end of the part, and the supporting assembly is used to support the side wall of the part; the spraying mechanism is used to spray the part; the cooling mechanism includes a vent pipe and a nozzle. The nozzle is connected to the air outlet end of the vent pipe, and the inner diameter of the opening of the nozzle is smaller than the inner diameter of the vent pipe.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] 1. In this scheme, gas is introduced into the nozzle through the vent pipe, and the exhausted gas is used to cool the parts undergoing thermal spraying. When the gas is ejected through the nozzle opening which is smaller than the inner diameter of the vent pipe, the gas flow rate is accelerated, thereby increasing the gas injection distance to a certain extent. It is suitable for pipe parts with a larger aspect ratio. When the gas flow rate is accelerated, according to the Bernoulli principle, negative pressure is generated, attracting the surrounding air to flow together, thereby increasing the gas flow rate and achieving better cooling effect.

[0009] 2. The side wall of the part is supported by the support assembly to reduce the risk of deformation in the middle of the part, and it will not affect the spraying mechanism entering the part from the suspended end to perform thermal spraying inside the part.

[0010] Furthermore, the clamping mechanism also includes a base plate, and the clamping assembly and the supporting assembly are both slidably connected to the base plate and have the same sliding direction.

[0011] Furthermore, the clamping assembly includes a mounting plate slidably connected to the base plate, a mounting disk rotatably connected to the mounting plate, and a plurality of clamping claws movably mounted on the mounting disk.

[0012] Furthermore, a rack is fixed on the bottom plate, and a gear for meshing with the rack for transmission is rotatably connected on the mounting plate.

[0013] Furthermore, the support assembly includes a first support member and a second support member, and the first support member and the second support member are respectively used to support the part from both sides of the part.

[0014] Furthermore, the support assembly includes a support frame slidably connected to the base plate, the first support member includes a first mounting frame slidably connected to the support frame and a first roller rotatably connected to the first mounting frame, the second support member includes a second mounting frame slidably connected to the support frame and a second roller rotatably connected to the second mounting frame; the axes of the first roller and the second roller are parallel to the axis of the mounting plate.

[0015] Furthermore, the first roller and the second roller are both provided in plurality.

[0016] Furthermore, the second roller is used to provide support on the lower side of the part side wall, and the first roller is used to provide auxiliary support on the upper side of the part side wall. The second roller includes two groups of rollers, and the two groups of rollers and the first roller are distributed in an isosceles triangle with the first mounting frame as the vertex.

[0017] Furthermore, the spraying mechanism includes a spraying frame and a spray gun slidably connected to the spraying frame, and the sliding direction of the spray gun is along the radial direction of the mounting plate.

[0018] Furthermore, at least two ventilation pipes are provided and are used to cool the inside and outside of the parts respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0020] Figure 2 for Figure 1 Enlarged view of part A.

[0021] Figure 3 It is a schematic diagram of the structure of the cooling mechanism in the embodiment of the utility model.

[0022] In the figure: 1, base plate; 2, spray rack; 3, spray gun; 4, mounting plate; 5, air exhaust; 6, mounting plate; 7, clamping jaws; 8, parts; 9, first mounting rack; 10, first roller; 11, second mounting rack; 12, second roller; 13, rack; 14, ventilation pipe; 15, nozzle; 16, through hole. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below with reference to the accompanying drawings, and specific implementation methods are given.

[0024] like Figure 1 , Figure 2 As shown, the thermal spraying equipment for pipe parts includes a clamping mechanism, a spraying mechanism and a cooling mechanism. The clamping mechanism includes a clamping assembly and a supporting assembly. The clamping assembly is used to clamp the part 8 from the end of the part 8, and the supporting assembly is used to support the side wall of the part 8. The clamping mechanism also includes a base plate 1. The clamping assembly and the supporting assembly are both slidably connected to the base plate 1 and have the same sliding direction. The clamping assembly and the supporting assembly drive the part 8 to slide along the base plate 1, so that the part 8 moves relative to the spraying mechanism to achieve spraying.

[0025] In this embodiment, the clamping assembly includes a mounting plate 4 slidably connected to the base plate 1, a mounting disk 6 rotatably connected to the mounting plate 4, and a plurality of clamping jaws 7 movably mounted on the mounting disk 6. The mounting plate 4 is mounted with a motor for driving the mounting disk 6 to rotate. Specifically, a slide rail is mounted on the base plate 1, the mounting plate 4 is slidably connected to the slide rail, the sliding direction of the mounting plate 4 is along the radial direction of the mounting disk 6, and the clamping jaws 7 are used to clamp the parts 8. In the actual design process, the design of the mounting plate 4 and the clamping jaws 7 can directly select the three-jaw chuck in the prior art. A rack 13 is fixed on the base plate 1, and a gear for meshing and driving with the rack 13 is rotatably connected to the mounting plate 4. A motor for driving the gear to rotate is also mounted on the mounting plate 4. The gear is driven to rotate by the motor, and the gear and the rack 13 are meshed for transmission, and then the mounting plate 4 is driven to slide on the slide rail by the gear. In the actual design process, a reducer can be installed on the output shaft of the motor.

[0026] The supporting assembly includes a first supporting member and a second supporting member, and the first supporting member and the second supporting member are respectively used to support the part 8 from both sides of the part 8. In the present embodiment, taking the case of placing the part 8 horizontally for spraying as an example, considering the influence of the gravity of the part 8 itself on the suspension of the part 8, the first supporting member and the second supporting member are respectively used to support the part 8 from the upper and lower sides of the part 8.

[0027] The support assembly includes a support frame slidably connected to the base plate 1, and specifically, the support frame is slidably connected to the slide rail. The first support member includes a first mounting frame 9 slidably connected to the support frame and a first roller 10 rotatably connected to the first mounting frame 9. The second support member includes a second mounting frame 11 slidably connected to the support frame and a second roller 12 rotatably connected to the second mounting frame 11. In the actual design process, the first mounting frame 9 and the second mounting frame 11 can both be driven by a screw lift in the prior art. The axes of the first roller 10 and the second roller 12 are parallel to the axis of the mounting disk 6, that is, after assembling the part 8, the axes of the first roller 10 and the second roller 12 are parallel to the axis of the part 8, then when the part 8 rotates with the mounting disk 6, the first roller 10 and the second roller 12 can rotate accordingly, and will not hinder the rotation of the part 8.

[0028] There are multiple first rollers 10 and second rollers 12. In this embodiment, the second rollers 12 are used to support the lower side of the side wall of the part 8, and the first rollers 10 are used to assist in supporting the upper side of the side wall of the part 8. The first roller 10 includes a group of roller groups, and the second roller 12 includes two groups of roller groups. Each group of roller groups includes two rollers. The two groups of roller groups of the second rollers 12 and the one group of roller groups of the first rollers 10 are distributed in an isosceles triangle with the first mounting frame 9 as the vertex, that is, forming 2 rollers on the top and 4 on the bottom of the part 8. The roller distribution structure designed in this way can provide reliable stability for the rotation and feeding of the part 8.

[0029] The spraying mechanism is used to spray the part 8, and the spraying mechanism includes a spraying frame 2 and a spray gun 3 slidably connected to the spraying frame 2. The sliding direction of the spray gun 3 is along the radial direction of the mounting plate 6. Specifically, the spray gun 3 can be a spray gun used for thermal spraying of pipe parts in the prior art. In this embodiment, the original structure of the spray gun 3 is not improved. It only needs to be slidably installed on the spraying frame 2. A cylinder for driving the spray gun 3 to slide is installed on the spraying frame 2. In this embodiment, the sliding direction of the spray gun 3, the sliding direction of the first mounting frame 9, and the sliding direction of the mounting plate 4 are perpendicular to each other.

[0030] Combination Figure 3As shown, the cooling mechanism includes a vent pipe 14 and a nozzle 15. The nozzle 15 is connected to the air outlet end of the vent pipe 14. In the actual design process, an air exhaust 5 is installed on the mounting plate 4, and the vent pipe 14 is connected to the air exhaust 5, that is, the end of the vent pipe 14 is connected to the mounting plate 4 through the air exhaust 5 for limiting, and gas is introduced into the air exhaust 5 through an air pump. The gas enters the nozzle 15 through the vent pipe 14 and is sprayed onto the part 8 through the nozzle 15 to cool the part 8. In the actual design process, at least two vent pipes 14 are provided and are used to cool the inside and outside of the part 8 respectively. In this embodiment, four vent pipes 14 are provided, two of which are used to cool the outside of the part 8, and the other two are used to cool the inside of the part 8. When cooling the outside of the part 8, two nozzles 15 are fixed on the mounting plate 4 and are respectively located on both sides of the mounting plate 6; when cooling the inside of the part 8, a through hole 16 is opened in the middle of the mounting plate 6, and the two nozzles 15 are fixed on the mounting plate 4 and inserted into the inside of the part 8 through the through hole 16. In actual use, according to the inner diameter of the part 8, only one ventilation pipe 14 can be used to cool the inside of the part 8. The inner diameter of the opening of the nozzle 15 is smaller than the inner diameter of the ventilation pipe 14.

[0031] When in use, the end of the part 8 is fixed on the mounting plate 6 by the clamping jaws 7, and then the heights of the first mounting frame 9 and the second mounting frame 11 are adjusted so that the first roller 10 and the second roller 12 are both in contact with the outer wall of the part 8, thereby providing auxiliary support for the part 8. Taking the internal spraying of the part 8 as an example, the position of the mounting plate 4 is adjusted so that the spray gun 3 is inserted into the part 8 and is located close to the mounting plate 6, and then the position of the spray gun 3 is adjusted by sliding the spray gun 3 so that the distance between the opening of the spray gun 3 and the inner wall of the part 8 meets the spraying requirements, and then spraying can begin.

[0032] During the spraying process, the mounting disk 6 is rotated to drive the part 8 to rotate so as to spray the circumference of the inner wall of the part 8. At the same time, the mounting plate 4 is slid so that the mounting plate 4 gradually slides away from the spray frame 2 to complete the full axial spraying of the part 8. During this process, the spray frame also drives the first mounting frame 9 and the second mounting frame 11 to slide accordingly, always supporting the part 8. In the actual design process, a driving device (such as a cylinder) in the prior art can be designed to drive the spray frame to slide.

[0033] During the spraying process, gas is introduced into the nozzle 15 through the vent pipe 14, and the exhausted gas is used to cool the part 8 undergoing thermal spraying. When the gas is ejected through the opening of the nozzle 15 which is smaller than the inner diameter of the vent pipe 14, the gas flow rate is accelerated, thereby increasing the gas spray distance to a certain extent. When the gas flow rate is accelerated, according to the Bernoulli principle, a negative pressure is generated, which attracts the surrounding air to flow together, thereby increasing the gas flow rate and achieving a better cooling effect. In the actual design process, the opening of the nozzle 15 is made to be parallel to the axis of the part 8, so that the gas exhausted from the nozzle 15 flows along the axis of the part 8, thereby cooling the part 8 over the largest possible range.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Thermal spraying equipment for pipe parts, characterized by: It includes a clamping mechanism, a spraying mechanism and a cooling mechanism. The clamping mechanism includes a clamping assembly and a supporting assembly. The clamping assembly is used to clamp the part from the end of the part, and the supporting assembly is used to support the side wall of the part; the spraying mechanism is used to spray the part; the cooling mechanism includes a vent pipe and a nozzle. The nozzle is connected to the air outlet end of the vent pipe, and the inner diameter of the opening of the nozzle is smaller than the inner diameter of the vent pipe.

2. The thermal spraying equipment for pipe parts according to claim 1, characterized in that: The clamping mechanism also includes a base plate, and the clamping assembly and the supporting assembly are both slidably connected to the base plate and have the same sliding direction.

3. The thermal spraying equipment for pipe parts according to claim 2 is characterized in that: The clamping assembly comprises a mounting plate slidably connected to the bottom plate, a mounting disc rotatably connected to the mounting plate, and a plurality of clamping claws movably mounted on the mounting disc.

4. The thermal spraying equipment for pipe parts according to claim 3 is characterized in that: A rack is fixed on the bottom plate, and a gear for meshing with the rack and transmitting is rotatably connected to the mounting plate.

5. The thermal spraying equipment for pipe parts according to claim 3 is characterized in that: The support assembly includes a first support member and a second support member, and the first support member and the second support member are respectively used to support the part from both sides of the part.

6. The thermal spraying equipment for pipe parts according to claim 5, characterized in that: The support assembly includes a support frame slidably connected to the base plate, the first support member includes a first mounting frame slidably connected to the support frame and a first roller rotatably connected to the first mounting frame, the second support member includes a second mounting frame slidably connected to the support frame and a second roller rotatably connected to the second mounting frame; the axes of the first roller and the second roller are parallel to the axis of the mounting plate.

7. The thermal spraying equipment for pipe parts according to claim 6, characterized in that: There are multiple first rollers and multiple second rollers.

8. The thermal spraying equipment for pipe parts according to claim 6, characterized in that: The second roller is used for supporting the lower side of the part side wall, and the first roller is used for auxiliary support on the upper side of the part side wall. The second roller includes two groups of roller groups, and the two groups of roller groups and the first roller are distributed in an isosceles triangle with the first mounting frame as the vertex.

9. The thermal spraying equipment for pipe parts according to claim 3, characterized in that: The spraying mechanism comprises a spraying frame and a spray gun slidably connected to the spraying frame, and the sliding direction of the spray gun is along the radial direction of the mounting plate.

10. The thermal spraying equipment for pipe parts according to claim 1, characterized in that: The ventilation pipes are provided with at least two and are used for cooling the inner side and the outer side of the parts respectively.

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