A powder plasma spraying apparatus

Abstract

The application provides a powder plasma spraying device and belongs to the technical field of spraying devices.The powder plasma spraying device comprises a refractory chamber, an observation window is reserved on one side of the refractory chamber, visible glass is fixedly connected in the observation window, a decontamination module is arranged at the observation window, a collecting box is arranged directly below the decontamination module, a moving module is arranged in the refractory chamber, and a plasma spraying module is arranged on the moving module.The application solves the problems that the existing powder plasma spraying device has certain use difficulty, powder may be attached to the visible glass of the observation window during the spraying process, and then the staff needs to frequently decontaminate, and the use is inconvenient.

Description

Technical Field

[0001] This invention belongs to the technical field of spraying equipment, and specifically relates to a powder plasma spraying device. Background Technology

[0002] Plasma spraying is a technology for strengthening and modifying material surfaces, enabling substrate surfaces to possess properties such as wear resistance, corrosion resistance, high-temperature oxidation resistance, electrical insulation, heat insulation, radiation protection, friction reduction, and sealing. Plasma spraying technology uses a plasma arc driven by direct current as a heat source to heat materials such as ceramics, alloys, and metals to a molten or semi-molten state, and then sprays them at high speed onto the pre-treated workpiece surface to form a firmly adhered surface layer.

[0003] Existing technology CN222948439U discloses a powder plasma spraying device, including a first stand, a first limiting block fixedly connected to the top of the first stand, a first motor fixedly connected to the top of the first limiting block, an output end of the first motor fixedly connected to one end of a first threaded rod, the other end of the first threaded rod rotatably connected to the top of a base plate, the first threaded rod being threadedly connected to a fourth limiting block, and the fourth limiting block being slidably connected to the inner wall of the first stand, a crossbar fixedly connected to the inner wall of the fourth limiting block, and a third motor fixedly connected to the outer wall of the fourth limiting block, an output end of the third motor fixedly connected to one end of a third threaded rod, the other end of the third threaded rod rotatably connected to the third limiting block. The inner wall of the structure is provided with the third limiting block fixedly connected to the cross frame, the third threaded rod threadedly connected to the inside of the threaded block, the threaded block slidably connected to the inside of the cross frame, the third limiting block threadedly connected to the second threaded rod, the third limiting block slidably connected to the inside of the second upright frame, the top of the second upright frame is fixedly connected to the second limiting block, the top surface of the second limiting block is fixedly connected to the second motor, the output end of the second motor is fixedly connected to one end of the second threaded rod, the other end of the second threaded rod is rotatably connected to the top surface of the base plate, the top surface of the threaded block is fixedly connected to the spray gun, the rear of the spray gun is fixedly connected to the water pipe, the electrical conduit, the plasma gas pipe and the powder pipe, and the front of the spray gun is provided with a spray nozzle. When adjusting the vertical position of the spray gun, the device drives the first and second threaded rods to rotate, thereby moving the crossbeam and then the spray gun vertically. Therefore, adjusting the vertical position of the spray gun requires the first and second motors to operate simultaneously, which presents a certain degree of difficulty in use. Furthermore, during the spraying process, powder may adhere to the viewing glass of the observation window, requiring frequent cleaning by the operator to ensure the cleanliness of the viewing glass and allow for constant observation of the spraying work, making it inconvenient to use. Summary of the Invention

[0004] This invention provides a powder plasma spraying device, which aims to solve the problems of existing powder plasma spraying devices having certain usage difficulties, and the fact that powder may adhere to the viewing glass of the observation window during the spraying process, requiring frequent cleaning by the staff, which is inconvenient to use.

[0005] This invention provides a powder plasma spraying device, which includes a refractory chamber, an observation window reserved on one side of the refractory chamber, a viewing glass fixed in the observation window, a decontamination module installed at the observation window, a collection box installed directly below the decontamination module, a movable module installed inside the refractory chamber, and a plasma spraying module installed on the movable module.

[0006] The stain removal module includes an assembly base, which is fixed to the side of the observation window. U-shaped openings are reserved on both sides of the assembly base. A movable seat is installed in the U-shaped opening on the assembly base. A stain removal unit is installed between a pair of movable seats. The stain removal unit includes a rotating column screwed between a pair of movable seats. A truncated cone is fixed to the outer peripheral wall of the center of the rotating column. An obliquely set an annular opening is reserved on the outer peripheral surface of the truncated cone. An adjusting column is movably installed in the annular opening on the truncated cone. An assembly table is fixed to the other side of the adjusting column. Two pairs of elastic columns are fixed to the side of the assembly table near the assembly base. A stain removal sheet is fixed to the other side of the two pairs of elastic columns. A stain removal cloth is fixed to the side of the stain removal sheet near the assembly base.

[0007] A pressing unit is mounted on the rotating column. The pressing unit includes a pair of rotating disks fixed to the outer wall of the rotating column. The pair of rotating disks are mirror images of each other on both sides of the frustum. Three sets of outer cylinders are fixed to the side walls of the rotating disks. The three sets of outer cylinders form an inner channel and an outer channel. A skew groove is reserved on the outer cylinder in the center. A pair of guide plates are screwed to the skew groove on the outer cylinder via an elastic element. A variable rod A is movably installed in the skew groove on the outer cylinder. A square bar A is fixed to one side of the variable rod A on the outside. A square tube A is fixed to the other side of the square bar A. A square bar B is movably installed in the square tube A.

[0008] Furthermore, a guide post is fixedly connected between the two vertical walls of the U-shaped opening on the mounting base, and the guide post and the movable base are movably connected.

[0009] Furthermore, a motor is installed on the side wall of one of the movable seats, and the rotating part of the motor is fixedly connected to the rotating column on one side.

[0010] Furthermore, a connecting rod is fixedly connected to the inner wall of the variable seat, and a square tube B is fixedly connected to the other side of the connecting rod. The square tube B and the square strip A are movably connected.

[0011] Furthermore, square strip B is fixed to the side wall of the assembly table, and a barrier plate is fixed to the other side of square strip B.

[0012] Furthermore, a pair of U-shaped seats are fixedly connected to the mounting base in a mirror image, and a linkage rod is fixedly connected to the inner wall of the U-shaped seat directly opposite the mounting base. The linkage rod has multiple pre-drilled teeth, and the linkage rod and the rotating disk engage with each other through the teeth.

[0013] Furthermore, a flushing unit is installed on a pair of variable seats. The flushing unit includes a liquid storage tank fixed to the lower end of the pair of variable seats. Multiple drain pipes are fixed to one side of the liquid storage tank near the mounting base. A through port is reserved on one side of the drain pipe inside the liquid storage tank. A shower head is connected to the side of the drain pipe extending to the outside of the liquid storage tank. A silicone platform is movably installed inside the drain pipe. A through port is reserved on the silicone platform. A variable column A is fixed to the center of one side of the silicone platform. A leak-proof sheet for closing the through port on the silicone platform is screwed to the other side of the silicone platform.

[0014] Furthermore, multiple variable columns A extend to one side of the drain pipe and are fixedly connected to a connecting piece. The connecting piece is flexibly fixedly connected to a square strip C. The square strip C passes through one side of the storage tank and is fixedly connected to a variable rod B. The square strip C and the storage tank are movably connected.

[0015] A track is fixed to the side wall of the storage tank, and a square platform is movably mounted on the track. A skewed groove is reserved on the square platform. A movable rod B is movably mounted in the groove on the square platform. A movable column B is fixed to the upper end of the square platform, and the other side of the movable column B is movably mounted in the annular opening on the circular platform.

[0016] Furthermore, the movable module includes a pair of tracks A fixedly connected to the fire-resistant chamber. A lead screw A is screwed into track A, and a slider A is screwed onto the lead screw A. The slider A is movably connected to track A. A housing is fixedly connected to the top of the pair of tracks A. A motor A is fixedly connected to one side of the housing. A rotating shaft is screwed into the housing. The rotating part of the motor A is connected to one side of the rotating shaft. A pair of bevel gears A are fixedly connected to the rotating shaft. The top of the lead screw A extends into the housing and is fixedly connected to a bevel gear B. The bevel gears A and B mesh with each other. Track B is fixedly connected between the pair of sliders A. A motor B is fixedly connected to the outer wall of one of the sliders A. A lead screw B is screwed into track B. One side of the lead screw B is connected to the rotating part of the motor B. The slider B is screwed onto the lead screw B. The slider B is movably connected to track B.

[0017] Furthermore, the plasma spraying module includes a spray gun fixed to the slider B. A spray nozzle is installed on the front side of the spray gun. A fixing block A is fixed to the upper end of the front side of the spray gun. A pair of fixing blocks B are fixed to the upper end of the outer side of the spray gun. A water pipe, an electrical conduit, a plasma gas pipe, and a powder pipe are fixed to the rear of the spray gun. A water tank is installed at the end of the water pipe. A battery compartment is installed at the end of the electrical conduit. A gas tank is installed at the end of the plasma gas pipe. A powder tank is installed at the end of the powder pipe. A fixing plate is installed at the end of the spray gun. The fixing plate is used to fix the water pipe, electrical conduit, plasma gas pipe, and powder pipe. The head end of the powder pipe passes through a pair of fixing blocks B and fixing block A and extends to the top of the front side of the spray nozzle.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. In this invention, a rotating shaft is driven by motor A, which in turn drives a pair of bevel gears A, which in turn drives a pair of bevel gears B, which in turn drives a pair of lead screws A. This causes a pair of sliders A to move vertically together, enabling stable vertical movement. A single motor A can drive the spray gun on the plasma spraying module to move smoothly, reducing the difficulty of using the device. Motor B drives lead screw B, which in turn drives slider B, which in turn drives the spray gun on the plasma spraying module to move, thus realizing the spraying operation.

[0020] 2. In this invention, the silicone platform moves downwards along with the rotating column A. At this moment, the leak-proof sheet closes the through-hole on the silicone platform, and the cleaning liquid in the drain pipe is discharged from the shower head onto the viewing glass to perform the first cleaning. Then, the rotating truncated cone pulls the adjusting column back and forth through the O-ring, and the assembly platform moves back and forth along with the adjusting column, pulling the cleaning sheet back and forth again. The cleaning cloth on the cleaning sheet cleans the viewing glass.

[0021] The position of the square strip A is changed by the variable rod A, which brings the assembly table closer to the viewing glass, presses the elastic column, and the elastic column applies pressure to the cleaning cloth, so that the cleaning cloth can clean the viewing glass more thoroughly. It is very convenient to use.

[0022] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0025] Figure 2 This is a first-view structural diagram of the mobile module and plasma spraying module according to an embodiment of the present invention;

[0026] Figure 3 This is a second-view structural diagram of the mobile module and plasma spraying module according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the housing according to an embodiment of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the stain removal module according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the main structure of the stain removal module according to an embodiment of the present invention;

[0030] Figure 7 This is a top view of the decontamination module according to an embodiment of the present invention;

[0031] Figure 8 This is an embodiment of the present invention. Figure 5 A magnified structural diagram at point M;

[0032] Figure 9 This is an embodiment of the present invention. Figure 6 A magnified structural diagram at point N;

[0033] Figure 10 This is a schematic diagram of the left-end rotating disk structure according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the right end structure of an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the cross-sectional structure of the drain pipe according to an embodiment of the present invention;

[0036] Figure 13 This is an embodiment of the present invention. Figure 6 Schematic diagram of the cross-sectional structure in the MM direction;

[0037] Attached reference numerals: 1. Refractory chamber; 2. Observation window; 3. Decontamination module; 4. Collection box; 5. Moving module; 6. Plasma spraying module; 31. Assembly base; 32. Variable base; 33. Rotating column; 34. Frustum; 35. Adjusting column; 36. Assembly table; 37. Guide column; 38. Elastic column; 39. Decontamination plate; 310. Rotating disc; 311. Outer cylinder; 312. Guide plate; 313. Variable rod A; 314. Square strip A; 315. Square tube A; 316. Square strip B; 317. Motor; 318. Connecting rod; 319. Square tube B; 320. U-shaped seat; 321. Storage tank; 322. Drain pipe; 323. Silicone table; 324. Variable column A; 325. 326. Connecting plate; 327. Square strip C; 328. Variable rod B; 329. Square platform; 320. Variable column B; 330. Leak-proof plate; 51. Track A; 52. Lead screw A; 53. Slider A; 54. Housing; 55. Motor A; 56. Rotating shaft; 57. Bevel gear A; 58. Bevel gear B; 59. Track B; 510. Motor B; 511. Lead screw B; 512. Slider B; 61. Spray gun; 62. Spray nozzle; 63. Fixing block A; 64. Fixing block B; 65. Fixing plate; 66. Powder storage tank; 67. Gas storage tank; 68. Battery compartment; 69. Water storage tank; 610. Powder tube; 611. Plasma gas tube; 612. Electrical conduit; 613. Water pipe. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Reference Figures 1-4 This invention provides a powder plasma spraying device, comprising a refractory chamber 1, an observation window 2 reserved on one side of the refractory chamber 1, a viewing glass fixed in the observation window 2, a decontamination module 3 installed at the observation window 2, a collection box 4 installed directly below the decontamination module 3, a movable module 5 installed inside the refractory chamber 1, and a plasma spraying module 6 installed on the movable module 5.

[0040] Reference Figures 5-13The stain removal module 3 includes an assembly base 31, which is fixed to the side of the observation window 2. Both sides of the assembly base 31 have U-shaped openings. A movable seat 32 is installed in the U-shaped opening of the assembly base 31. A stain removal unit is installed between a pair of movable seats 32. The stain removal unit includes a rotating column 33 screwed between a pair of movable seats 32. A frustum 34 is fixed to the outer peripheral wall of the center of the rotating column 33. An oblique annular opening is reserved on the outer peripheral surface of the frustum 34. An adjusting column 35 is movably installed in the annular opening on the frustum 34. The other side of the adjusting column 35 is fixed to an assembly table 36. Two pairs of elastic columns 38 are mirror-fixed to the side of the assembly table 36 near the assembly base 31. The other side of the two pairs of elastic columns 38 is fixed to a stain removal sheet 39. A stain removal cloth is fixed to the side of the stain removal sheet 39 near the wall of the assembly base 31.

[0041] A motor 317 is mounted on the side wall of one of the variable seats 32, and the rotating part of the motor 317 is fixedly connected to the rotating column 33 on one side.

[0042] Reference Figures 5-7 Motor 317 pulls rotating column 33 to rotate, rotating column 33 pulls truncated cone 34 to rotate, rotating truncated cone 34 pulls adjusting column 35 to move back and forth through annular opening, assembly table 36 moves back and forth with adjusting column 35, and then pulls cleaning cloth 39 to move back and forth, cleaning cloth on cleaning cloth 39 cleans the viewing glass.

[0043] A flushing unit is installed on a pair of variable seats 32. The flushing unit includes a liquid storage tank 321 fixed to the lower end of the pair of variable seats 32. Multiple drain pipes 322 are fixed to one side of the liquid storage tank 321 near the mounting base 31. A through port is reserved on one side of the drain pipe 322 inside the liquid storage tank 321. The drain pipe 322 extends to the outside of the liquid storage tank 321 and connects to the shower head. A silicone platform 323 is movably installed inside the drain pipe 322. A through port is reserved on the silicone platform 323. A variable column A324 is fixed to the center of one side of the silicone platform 323. A leak-proof sheet 330 for closing the through port on the silicone platform 323 is screwed to the other side of the silicone platform 323. In order to ensure the leak-proof function of the leak-proof sheet 330, a silicone sheet is fixed to the side of the leak-proof sheet 330 that is in contact with the silicone platform 323.

[0044] Multiple variable columns A324 extend to one side of the outside of the drain pipe 322 and are fixedly connected to the connecting piece 325. The connecting piece 325 is flexibly fixedly connected to the square strip C326. The square strip C326 passes through one side of the outside of the storage tank 321 and is fixedly connected to the variable rod B327. The square strip C326 and the storage tank 321 are movably connected.

[0045] A track is fixed to the side wall of the liquid storage tank 321. A square platform 328 is movably mounted on the track. A skewed groove is reserved on the square platform 328. A movable rod B327 is movably mounted in the groove on the square platform 328. A movable column B329 is fixed to the upper end of the square platform 328. The other side of the movable column B329 is movably mounted in the annular opening on the truncated cone 34.

[0046] Reference Figure 9 , Figure 12 and Figure 13 The storage tank 321 is connected to the external pipeline. The annular opening on the truncated cone 34 can also pull the movable column B329 to move back and forth. The movable column B329 pulls the square platform 328 to move back and forth horizontally. Through the cooperation between the groove on the square platform 328 and the movable rod B327, the square bar C326 moves back and forth vertically. When the square bar C326 moves downward, the connecting piece 325 and the movable column A324 move downward. The silicone platform 323 moves downward along with the movable column A324. At this time, the leak-proof piece 330 closes the through port on the silicone platform 323, and discharges the cleaning liquid in the drain pipe 322 from the shower head to the viewing glass to perform the first cleaning.

[0047] During the upward movement of the square bar C326, the connecting piece 325 and the moving column A324 move upward, and the silicone platform 323 moves upward along with the moving column A324. At this moment, the leak-proof piece 330 opens, the through port on the silicone platform 323 is connected, and the cleaning fluid in the storage tank 321 flows into the drain pipe 322. The cleaning fluid passes through the through port on the silicone platform 323.

[0048] A pressing unit is mounted on the rotating column 33. The pressing unit includes a pair of rotating disks 310 fixed to the outer wall of the rotating column 33. The pair of rotating disks 310 are mirror images of each other on both sides of the frustum 34. Three sets of outer cylinders 311 are fixed to the side wall of the rotating disks 310. The three sets of outer cylinders 311 form an inner channel and an outer channel. A skewed groove is reserved on the outer cylinder 311 located in the center. A pair of guide plates 312 are screwed to the skewed groove on the outer cylinder 311 via an elastic element. A variable rod A313 is movably installed in the skewed groove on the outer cylinder 311. A square bar A314 is fixed to one side of the variable rod A313 on the outside. A square tube A315 is fixed to the other side of the square bar A314. A square bar B316 is movably installed in the square tube A315.

[0049] Under normal conditions, the tilt position and rotation direction of the guide plate 312 on one of the rotating disks 310 are referenced. Figure 10 ,Will Figure 10As the front view, the rotating column 33 pulls the rotating disk 310 to rotate in the opposite direction. The moving rod A313 is guided by the guide plate 312 in the inner channel to move from the inner channel to the outer channel. When the moving rod A313 passes through the guide plate 312 in the outer channel, the guide plate 312 rotates and closes the skew groove. Then the moving rod A313 will always move in the outer channel. And when the rotating disk 310 rotates in the opposite direction, the moving rod A313 will return to the inner channel and always move in the inner channel.

[0050] At this moment Figure 11 As the side viewed directly, the tilting orientation and rotation direction of the guide plate 312 on the other rotating disk 310 are referenced. Figure 11 , and will Figure 11 As the front side is viewed, the rotating disk 310 rotates in the forward direction, and the moving rod A313 is guided by the guide plate 312 in the inner channel to move from the inner channel to the outer channel. When the moving rod A313 passes through the guide plate 312 in the outer channel, the guide plate 312 rotates, closing the skew groove. Then the moving rod A313 will always move in the outer channel, and when the rotating disk 310 rotates in the reverse direction, the moving rod A313 will return to the inner channel and always move in the inner channel.

[0051] The position of the square strip A314 is changed by the variable rod A313, which in turn brings the assembly table 36 close to the viewing glass, presses the elastic column 38, and the elastic column 38 presses the cleaning cloth 39, so that the cleaning cloth can clean the viewing glass more thoroughly.

[0052] A guide post 37 is fixedly connected between the two vertical walls of the U-shaped opening on the mounting base 31, and the guide post 37 and the variable base 32 are movably connected.

[0053] Reference Figure 5 and Figure 6 The guide post 37 can impose constraints on the changes of the variable seat 32.

[0054] A connecting rod 318 is fixedly connected to the inner wall of the variable seat 32, and a square tube B319 is fixedly connected to the other side of the connecting rod 318. The square tube B319 and the square strip A314 are movably connected.

[0055] Reference Figure 8 The square tube A314 is constrained by the connecting rod 318 and the square tube B319, and the square tube A315 can constrain the change of the square tube B316.

[0056] The square strip B316 is fixed to the side wall of the assembly table 36, and the other side of the square strip B316 is fixed to a barrier plate to prevent the square strip B316 from detaching from the square tube A315.

[0057] A pair of U-shaped seats 320 are fixedly connected to the mounting base 31 in a mirror image. A linkage rod is fixedly connected to the inner wall of the U-shaped seat 320 that is directly opposite the mounting base 31. Multiple teeth are reserved on the linkage rod, and the linkage rod and the rotating disk 310 are engaged with each other through the teeth.

[0058] Reference Figure 5 and Figure 8 Through the cooperation between the linkage rod and the rotating disk 310, the moving seat 32 moves downward, and the cleaning unit, flushing unit and pressing unit move downward together. The rotating disk 310 rotates in the opposite direction, which can pull the moving seat 32 to move upward.

[0059] The movable module 5 includes a pair of tracks A51 fixedly connected to the fire-resistant chamber 1. A lead screw A52 is screwed into the track A51, and a slider A53 is screwed onto the lead screw A52. The slider A53 is movably connected to the track A51. A housing 54 is fixedly connected to the top of the pair of tracks A51. A motor A55 is fixedly connected to one side of the housing 54. A rotating shaft 56 is screwed into the housing 54. The rotating part of the motor A55 is connected to one side of the rotating shaft 56. A pair of bevel gears A57 are fixedly connected to the rotating shaft 56. The top of rod A52 extends into housing 54 and is fixedly connected to bevel gear B58. Bevel gear A57 and bevel gear B58 are meshed together. A track B59 is fixedly connected between a pair of sliders A53. A motor B510 is fixedly connected to the outer wall of one of the sliders A53. A lead screw B511 is screwed into track B59. One side of lead screw B511 is connected to the rotating part of motor B510. Slider B512 is screwed onto lead screw B511. Slider B512 is movably connected to track B59.

[0060] Reference Figures 2-4 The motor A55 drives the rotating shaft 56 to rotate, which in turn drives a pair of bevel gears A57 to rotate. The bevel gears A57 in turn drive a pair of bevel gears B58 to rotate, which in turn drive a pair of lead screws A52 to rotate. This causes a pair of sliders A53 to move vertically together, enabling stable vertical movement. A single motor A55 can drive the spray gun 61 on the plasma spraying module 6 to move smoothly, reducing the difficulty of using the device. The motor B510 drives the lead screw B511 to rotate, which in turn drives the slider B512 to move, which in turn drives the spray gun 61 on the plasma spraying module 6 to move, thus realizing the spraying operation.

[0061] The plasma spraying module 6 includes a spray gun 61 fixed to a slider B512. A spray nozzle 62 is mounted on the front of the spray gun 61. A fixing block A63 is fixed to the upper front end of the spray gun 61. A pair of fixing blocks B64 are fixed to the upper outer side of the spray gun 61. A water pipe 613, an electrical conduit 612, a plasma gas pipe 611, and a powder pipe 610 are fixed to the rear of the spray gun 61. A water tank 69 is mounted at the end of the water pipe 613. The electrical conduit 612... The tail is equipped with a battery compartment 68, the tail of the plasma gas tube 611 is equipped with a gas storage tank 67, the tail of the powder tube 610 is equipped with a powder storage tank 66, and the tail of the spray gun 61 is equipped with a fixing plate 65. The fixing plate 65 is used to fix the water tube 613, the electrical conduit 612, the plasma gas tube 611 and the powder tube 610. The head of the powder tube 610 passes through a pair of fixing blocks B64 and fixing blocks A63 and extends to the top of the front side of the spray nozzle 62.

[0062] Reference Figures 2-4 The masterbatch to be sprayed is placed directly in front of the spray gun 61. Plasma gas is delivered from the gas tank 67 to the inside of the spray gun 61 through the plasma gas pipe 611. Then, the power inside the battery compartment 68 is transmitted to the inside of the spray gun 61 through the electric wire pipe 612 to generate an electric arc to ignite the plasma gas. The ignited plasma gas is sprayed out from the spray nozzle 62. Powder is delivered from the powder tank 66 through the powder pipe 610 and discharged from above the spray nozzle 62. The ignited plasma gas heats the powder and sprays it onto the masterbatch, thereby performing the spraying work.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A powder plasma spraying apparatus, comprising a refractory chamber, wherein an observation window is provided on one side of the refractory chamber, and a viewing glass is fixedly connected to the observation window, characterized in that, A decontamination module is installed at the observation window, and a collection box is installed directly below the decontamination module. A mobile module is installed inside the fire-resistant chamber, and a plasma spraying module is installed on the mobile module. The stain removal module includes an assembly base, which is fixed to the side of the observation window. U-shaped openings are reserved on both sides of the assembly base. A movable seat is installed in the U-shaped opening on the assembly base. A stain removal unit is installed between a pair of movable seats. The stain removal unit includes a rotating column screwed between a pair of movable seats. A truncated cone is fixed to the outer peripheral wall of the center of the rotating column. An obliquely set an annular opening is reserved on the outer peripheral surface of the truncated cone. An adjusting column is movably installed in the annular opening on the truncated cone. An assembly table is fixed to the other side of the adjusting column. Two pairs of elastic columns are fixed to the side of the assembly table near the assembly base. A stain removal sheet is fixed to the other side of the two pairs of elastic columns. A stain removal cloth is fixed to the side of the stain removal sheet near the assembly base. A pressing unit is mounted on the rotating column. The pressing unit includes a pair of rotating disks fixed to the outer wall of the rotating column. The pair of rotating disks are mirror images of each other on both sides of the frustum. Three sets of outer cylinders are fixed to the side walls of the rotating disks. The three sets of outer cylinders form an inner channel and an outer channel. A skew groove is reserved on the outer cylinder in the center. A pair of guide plates are screwed to the skew groove on the outer cylinder via an elastic element. A variable rod A is movably installed in the skew groove on the outer cylinder. A square bar A is fixed to one side of the variable rod A on the outside. A square tube A is fixed to the other side of the square bar A. A square bar B is movably installed in the square tube A. A flushing unit is installed on a pair of variable seats. The flushing unit includes a liquid storage tank fixed to the lower end of the pair of variable seats. Multiple drain pipes are fixed to one side of the liquid storage tank near the mounting base. A through port is reserved on one side of the drain pipe inside the liquid storage tank. A shower head is connected to the side of the drain pipe extending to the outside of the liquid storage tank. A silicone platform is movably installed inside the drain pipe. A through port is reserved on the silicone platform. A variable column A is fixed to the center of one side of the silicone platform. A leak-proof plate for closing the through port on the silicone platform is screwed to the other side of the silicone platform. Multiple variable columns A extend to one side of the drain pipe and are fixed to a connecting piece. The connecting piece is flexibly fixed to a square bar C. The square bar C passes through one side of the outside of the storage tank and is fixed to a variable rod B. The square bar C and the storage tank are movably connected. A track is fixed to the side wall of the storage tank. A square platform is movably mounted on the track. A skewed groove is reserved on the square platform. A movable rod B is movably mounted in the groove on the square platform. A movable column B is fixed to the upper end of the square platform. The other side of the movable column B is movably mounted in the annular opening on the circular platform. Through the cooperation between the groove on the square platform and the moving rod B, the square bar C moves back and forth vertically. While the square bar C moves downward, the connecting piece and the moving column A move downward. The silicone platform moves downward along with the moving column A. At this moment, the leak-proof plate closes the through-hole on the silicone platform, and the cleaning liquid in the drain pipe is discharged from the shower head onto the viewing glass to perform the first cleaning. During the upward movement of the square strip C, the connecting piece and the moving column A move upward, and the silicone platform moves upward along with the moving column A. At this moment, the leak-proof plate opens, the through port on the silicone platform is connected, and the cleaning fluid in the storage tank flows into the drain pipe. The cleaning fluid passes through the through port on the silicone platform.

2. The powder plasma spraying apparatus according to claim 1, characterized in that: A guide post is fixed between the two vertical walls of the U-shaped opening on the mounting base, and the guide post and the movable base are movably connected.

3. The powder plasma spraying apparatus according to claim 1, characterized in that: A motor is mounted on the side wall of one of the variable seats, and the rotating part of the motor is fixedly connected to the rotating column on one side.

4. The powder plasma spraying apparatus according to claim 1, characterized in that: A connecting rod is fixed to the inner wall of the variable seat, and a square tube B is fixed to the other side of the connecting rod. The square tube B and the square strip A are movably connected.

5. The powder plasma spraying apparatus according to claim 1, characterized in that: Square strip B is fixed to the side wall of the assembly table, and a barrier plate is fixed to the other side of square strip B.

6. The powder plasma spraying apparatus according to claim 1, characterized in that: A pair of U-shaped seats are fixedly connected to the mounting base in a mirror image. A linkage rod is fixedly connected to the inner wall of the U-shaped seat directly opposite the mounting base. Multiple teeth are reserved on the linkage rod, and the linkage rod and the rotating disk are engaged with each other through the teeth.

7. The powder plasma spraying apparatus according to claim 1, characterized in that: The movable module includes a pair of tracks A fixedly connected to the fire-resistant chamber. A lead screw A is screwed into track A, and a slider A is screwed onto the lead screw A. The slider A is movably connected to track A. A housing is fixedly connected to the top of the pair of tracks A. A motor A is fixedly connected to one side of the housing. A rotating shaft is screwed into the housing. The rotating part of the motor A is connected to one side of the rotating shaft. A pair of bevel gears A are fixedly connected to the rotating shaft. The top of the lead screw A extends into the housing and is fixedly connected to a bevel gear B. The bevel gears A and B mesh with each other. Track B is fixedly connected between the pair of sliders A. A motor B is fixedly connected to the outer wall of one of the sliders A. A lead screw B is screwed into track B. One side of the lead screw B is connected to the rotating part of the motor B. The slider B is screwed onto the lead screw B. The slider B is movably connected to track B.

8. A powder plasma spraying apparatus according to claim 7, characterized in that: The plasma spraying module includes a spray gun fixed to a slider B. A spray nozzle is installed on the front side of the spray gun. A fixing block A is fixed to the upper end of the front side of the spray gun. A pair of fixing blocks B are fixed to the upper end of the outer side of the spray gun. A water pipe, an electrical conduit, a plasma gas pipe, and a powder pipe are fixed to the rear of the spray gun. A water tank is installed at the end of the water pipe, a battery compartment is installed at the end of the electrical conduit, a gas tank is installed at the end of the plasma gas pipe, and a powder tank is installed at the end of the powder pipe. A fixing plate is installed at the end of the spray gun. The fixing plate is used to fix the water pipe, electrical conduit, plasma gas pipe, and powder pipe. The head of the powder pipe passes through a pair of fixing blocks B and fixing block A and extends to the top of the front side of the spray nozzle.

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