Spraying device and spraying method for ball body of ball valve

Abstract

The invention discloses a ball valve ball body spraying device and a spraying method thereof, and belongs to the technical field of spraying, the key points of the technical scheme are that the ball valve ball body spraying device comprises a base, and the base is provided with a spindle box and a tailstock; the installation assembly is used for installing and fixing the ball body, the installation assembly comprises a rod body, an inner supporting seat and an abutting seat, the abutting seat abuts against the inner wall face of the through hole of the ball body, the abutting seat is movably installed on the inner supporting seat, and the rod body is installed and connected with the inner supporting seat; the spraying nozzle is used for spraying a spraying material; the flame nozzle is used for spraying flames to act on the sphere; and the moving assembly is movably installed on the base, and the moving assembly is independently and correspondingly installed and connected with the spraying nozzle and the flame nozzle. According to the spraying device, efficient spraying can be conducted on the ball body of the ball valve.

Description

Technical Field

[0001] The present application belongs to the field of spraying technology, and in particular relates to a ball valve sphere spraying device and a spraying method thereof. Background Art

[0002] Wear-resistant ball valves are widely used in key industries such as polysilicon, organic silicon, petrochemicals, and coal chemical industry due to their excellent wear resistance, sealing, erosion resistance, and corrosion resistance. Wear-resistant ball valves require wear-resistant coatings and surface treatments made of sufficiently hard carbide to ensure that the valves maintain excellent wear resistance, erosion resistance, and sealing properties under high-speed fluid erosion and solid particle impact.

[0003] Existing large-diameter spheres are usually sprayed using a supersonic spraying process. During the rough processing, flame heating, sandblasting and other steps need to be performed through a spraying device. However, the existing spraying device can only clamp one sphere at a time and cannot achieve higher spraying efficiency. Improvements are needed to this problem. Summary of the Invention

[0004] The purpose of this application is to provide a ball valve sphere spraying device to address the above-mentioned technical problems, which can achieve efficient spraying of the ball valve sphere.

[0005] The present application provides a ball valve ball spraying device, comprising: A base, wherein the base is provided with a spindle box and a tailstock; A mounting assembly for mounting a fixed sphere, the mounting assembly comprising a rod, an inner support seat, and an abutment seat, the abutment seat abutting against the inner wall surface of the through hole of the sphere, the abutment seat being movably mounted on the inner support seat, the rod and the inner support seat being mounted and connected; Spray nozzle, used for spraying spray materials; A flame nozzle is used to spray flames onto the sphere; The movable component is movably mounted on the base, and the movable component is individually mounted and connected with the spray nozzle and the flame nozzle.

[0006] The spindle box is driven by a connected driving motor, and a three-jaw chuck and other clamping components are installed on the output shaft of the spindle box. After the mounting components are fixed to the sphere, they are placed between the spindle box and the tailstock. Each set of mounting components is connected to a sphere, and 1-5 sets of mounting components can be connected and installed between the spindle box and the tailstock, which can realize continuous processing of multiple spheres at one time, reduce the time of clamping the spheres to the base, and improve the overall spraying efficiency of the spheres. The mounting component realizes the clamping connection of the mounting component to the sphere by making the abutment seat extend from the inner support seat and abut against the inner wall surface of the sphere through hole. It is more convenient to connect multiple spheres on the same axis by assembling components than to use one rod to connect all the spheres, and the number of spheres required for continuous processing at one time can be freely matched according to needs. The spray nozzle is connected to the spray material source, and the spray material is sprayed onto the surface of the sphere under the action of the booster device. Before spraying, the flame nozzle sprays flames to heat and clean the area to be sprayed. The spray nozzle and the flame nozzle are respectively installed on their corresponding moving components. The moving components can move on the base to realize the movement of the spray nozzle and the flame nozzle, and can process the arranged spheres.

[0007] Furthermore, the inner support seat includes: The connecting shaft is coaxially connected to the inner supporting seat and is placed on both sides of the inner supporting seat; A movable plate is mounted on the inner support seat and sleeved on the connecting shaft, wherein the movable plate is provided with a tapered portion, and the tapered portion is provided with a sliding groove; An elastic member is placed between the movable disk and the inner support seat; Wherein, the abutment seat is provided with a sliding portion corresponding to the sliding groove.

[0008] Furthermore, the inner support seat includes: Limiting parts, installed on the activity; Wherein, the movable disk is provided with a mounting groove corresponding to the limiting member, and the connecting shaft is provided with a limiting groove corresponding to the limiting member.

[0009] Furthermore, the connecting shaft includes: A threaded portion, disposed on the end of the connecting shaft; Wherein, the rod body is provided with a threaded hole corresponding to the threaded portion.

[0010] Furthermore, the rod body includes: The plug-in portion is placed on the rod body on one side of the inner support seat; The plug-in hole is located on the rod body on the other side of the inner support seat; The rod bodies between two adjacent installation components are adapted to each other through the plug-in parts and the plug-in holes.

[0011] Furthermore, the rod body further includes: A fastener is installed between two mating rods.

[0012] Furthermore, the mobile component includes: A movable seat is used to install a corresponding spray nozzle and flame nozzle, and the movable seat is driven to move by a driving device; Universal connection assembly, installed between the moving base and the spray nozzle and flame nozzle; The cam plate is provided with a cam groove, wherein the cam groove includes a straight line segment and an arc segment; A cam seat, movably connected to the cam groove; A telescopic connecting rod is connected between the moving seat and the cam seat, wherein the telescopic connecting rod is fixedly connected to the moving seat and the telescopic connecting rod and the cam seat are connected by a ball joint; The pushing seat is movably mounted on the moving seat. The pushing seat is provided with a rounded rectangular hole. The cam seat is slidably connected to the pushing seat. The pushing seat is driven to move by a driving device.

[0013] The present application also provides a method for spraying a ball valve ball spray device, the specific steps of which include: S1, connect the mounting assembly with the sphere, then connect multiple mounting assemblies with the spheres mounted thereon and place them on the base and install them between the headstock and the tailstock; S2, controlling the flame nozzle by the moving assembly to preheat the surface of the sphere to be sprayed; S3, controlling the movement of the spray nozzle by the moving component to spray the spray material from the outer surface of the sphere to the inner surface of the through hole within a range of X cm from the edge; S4, remove the mounting assembly and the sphere as a whole from the base and cool them down.

[0014] The mounting assembly with the sphere is placed on the base, and the rotation of the sphere is controlled by the base. The flame nozzle and the spray nozzle can both act on the sphere. The flame nozzle and the spray nozzle are pushed to move and act on the sphere by the moving assembly. A coating is sprayed on the outer surface of the sphere and within a range of X cm from the edge of the through hole, which can effectively improve the surface wear resistance of the edge of the through hole of the sphere, especially the edge of the through hole is not easy to wear. The sphere is preheated and then sprayed, but there are multiple spheres on the base. When the flame nozzle heats the second sphere, the first sphere that has completed heating can be sprayed, so that preheating and spraying are carried out simultaneously, further improving production efficiency. The rod body also includes parts at both ends that are convenient for installation on the base.

[0015] The beneficial effects of this application are: 1. Each set of mounting components is connected to a sphere. Multiple sets of mounting components can be connected to realize continuous processing of multiple spheres at one time, reduce the time of clamping the spheres to the base, and improve the overall spraying efficiency of the spheres.

[0016] 2. When the rod body and the connecting shaft are tightened, the rod body and the movable disk are abutted, and the movable disk moves toward the inner support seat so that the abutment seat extends from the inner support seat, so that the abutment block clamps the sphere in the through hole. When the rod body is separated from the connecting shaft, the movable disk can move toward the outside of the inner support seat and reset.

[0017] 3. The moving component can move on the base to realize the movement of the spray nozzle and the flame nozzle, and can process the arranged spheres. The coating is sprayed on the outer surface of the sphere and the range of X cm from the edge of the through hole, which can effectively improve the surface wear resistance of the edge of the sphere through hole. 4. The cam seat is pushed to move cyclically along the cam groove on the cam plate by reciprocating movement of the push seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the spraying device of this application; Figure 2 A schematic diagram of the structure of the installation components of this application; Figure 3 This is a schematic diagram of the structure of the mobile component of this application; Figure 4 This is a schematic diagram of the structure of the spray paint / flame acting on the trajectory of the sphere in this application; Reference numerals in the figure are: 001, sphere; 002, coating; 100, base; 110, spindle box; 120, tailstock; 200, mounting assembly; 210, rod; 211, threaded hole; 212, plug-in portion; 213, plug-in hole; 220, inner support seat; 230, abutment seat; 231, sliding portion; 240, connecting shaft; 241, limiting groove; 242, threaded portion; 250, movable plate; 25 1. Cone; 252. Slide; 253. Mounting slot; 260. Elastic member; 270. Limit member; 280. Fastener; 300. Spray nozzle; 400. Flame nozzle; 500. Moving assembly; 510. Moving seat; 520. Universal connection assembly; 530. Cam plate; 531. Cam slot; 540. Cam seat; 550. Telescopic connecting rod; 560. Push seat; 561. Rounded rectangular hole. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0020] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0021] The following provides a detailed description of the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0022] Example 1: like Figure 1-Figure 4 As shown, the embodiment of the present application provides a ball valve ball 001 spraying device, comprising: A base 100 , wherein the base 100 is provided with a spindle box 110 and a tailstock 120 ; The mounting assembly 200 is used to mount and fix the sphere 001. The mounting assembly 200 includes a rod 210, an inner support seat 220, and an abutment seat 230. The abutment seat 230 abuts against the inner wall surface of the through hole of the sphere 001. The abutment seat 230 is movably mounted on the inner support seat 220. The rod 210 and the inner support seat 220 are mounted and connected; A spray nozzle 300 for spraying a spray material; The flame nozzle 400 is used to spray flames onto the sphere 001; The movable assembly 500 is movably mounted on the base 100 , and the movable assembly 500 is individually mounted and connected to the spray nozzle 300 and the flame nozzle 400 .

[0023] The spindle box 110 is driven by a connected driving motor, and a three-jaw chuck and other clamping components are installed on the output shaft of the spindle box 110. After being fixed to the sphere 001 through the mounting component 200, it is placed between the spindle box 110 and the tailstock 120. Each set of mounting components 200 is connected to one sphere 001. 1-5 sets of mounting components 200 can be connected and installed between the spindle box 110 and the tailstock 120, which can realize one-time continuous processing of multiple spheres 001, reduce the time for clamping the sphere 001 to the base 100, and improve the overall spraying efficiency of the sphere 001. The mounting component 200 clamps the sphere 001 by extending the abutment seat 230 from the inner support seat 220 and abutting against the inner wall surface of the through hole of the sphere 001. Connection, connecting multiple spheres 001 on the same axis through several groups of mounting components 200 is more convenient than using one rod 210 to connect all spheres 001, and the number of spheres required for continuous processing at one time can be freely matched according to needs. The spray nozzle 300 is connected to the spray material source, and the spray material is sprayed onto the surface of the sphere 001 under the action of the booster device. Before spraying, the flame nozzle 400 sprays a flame to heat and clean the area to be sprayed. The spray nozzle 300 and the flame nozzle 400 are respectively installed on their corresponding moving components 500. The moving component 500 can move on the base 100 to realize the movement of the spray nozzle 300 and the flame nozzle 400, and can process the arranged spheres 001.

[0024] Example 2: like Figure 1 、 Figure 2 As shown, the embodiment of the present application provides a ball valve ball 001 spraying device. In addition to the above technical features, the inner support seat 220 further includes: The connecting shaft 240 is coaxially connected to the inner support base 220 and is disposed on both sides of the inner support base 220; The movable plate 250 is mounted on the inner support seat 220 and sleeved on the connecting shaft 240. The movable plate 250 is provided with a tapered portion 251, and the tapered portion 251 is provided with a sliding groove 252; The elastic member 260 is placed between the movable plate 250 and the inner support seat 220; The abutting seat 230 is provided with a sliding portion 231 corresponding to the sliding groove 252 .

[0025] The connecting shaft 240 and the inner support seat 220 are integrally connected or fixedly connected by fasteners 280 such as bolts. The movable disk 250 is sleeved on the connecting shaft 240, so that the sliding portion 231 of the abutment seat 230 cooperates with the slide groove 252. When the movable disk 250 moves along the direction of the connecting shaft 240, the radial movement of the abutment seat 230 along the inner support seat 220 can be controlled. The elastic member 260 abuts between the movable disk 250 and the inner support seat 220. The elastic member 260 adopts a spring, etc. When the movable disk 250 moves into the inner support seat 220, the abutment seat 230 extends from the inner support seat 220. The elastic member 260 acts on the movable disk 250, so that the movable disk 250 can move outward of the inner support seat 220 and reset.

[0026] Furthermore, the inner support seat 220 includes: The limiting member 270 is mounted on the movable body; The movable disk 250 is provided with a mounting groove 253 corresponding to the limiting member 270 , and the connecting shaft 240 is provided with a limiting groove 241 corresponding to the limiting member 270 .

[0027] The limiting member 270 is fixedly installed in the installation groove 253 of the movable disk 250 by fasteners 280 such as bolts. The limiting member 270 and the installation groove 253 are evenly distributed around the axis of the inner support seat 220. The limiting member 270 extends from the installation groove 253 to fit into the limiting groove 241. The limiting member 270 is installed after the movable disk 250 is matched with the inner support seat 220. When the elastic member 260 acts on the movable disk 250, the movable disk 250 is limited to the connecting shaft 240 by the limiting member 270 and the limiting groove 241.

[0028] Furthermore, the connecting shaft 240 includes: a threaded portion 242 disposed at the end of the connecting shaft 240; The rod body 210 is provided with a threaded hole 211 corresponding to the threaded portion 242 .

[0029] The threaded portion 242 is threadedly connected to the threaded hole 211, and the rod body 210 is installed on the connecting shaft 240 through the threaded portion 242 and the threaded hole 211. As the rod body 210 rotates, the rod body 210 and the movable disk 250 abut against each other, so that the movable disk 250 moves toward the inner support seat 220. When the rod body 210 and the connecting shaft 240 are tightened, the abutment block clamps the ball 001 in the through hole.

[0030] Furthermore, the rod body 210 includes: The plug-in portion 212 is placed on the rod body 210 on one side of the inner support seat 220; The plug hole 213 is placed on the rod body 210 on the other side of the inner support seat 220; The rod bodies 210 between two adjacent installation assemblies 200 are adapted to each other through the plug-in portions 212 and the plug-in holes 213 .

[0031] Adjacent mounting components 200 are matched with each other through the plug-in portion 212 and the plug-in hole 213 on the rod body 210. The cross-section of the plug-in hole 213 and the plug-in portion 212 is a regular polygon such as a regular triangle, a square, or a regular pentagon, which improves the stability of the plug-in portion 212 and the plug-in hole 213 after matching.

[0032] Furthermore, the rod body 210 further includes: The fastener 280 is installed between two mutually matching rods 210 .

[0033] The fastener 280 is a bolt, etc. When the plug-in parts 212 and the plug-in holes 213 of the two rod bodies 210 cooperate with each other, two corresponding holes are provided on the rod body 210 corresponding to the plug-in parts 212 and the plug-in interfaces, one of which is unthreaded and the other has an internal thread. The fastener 280 is connected in the two holes to connect adjacent mounting components 200 into a rigid connection structure to improve the structural stability.

[0034] Example 3: like Figure 1 、 Figure 3 As shown, the embodiment of the present application provides a ball valve ball 001 spraying device. In addition to the above technical features, the moving component 500 further includes: The movable seat 510 is used to install the corresponding spray nozzle 300 and flame nozzle 400, and the movable seat 510 is driven to move by the driving device; The universal connection assembly 520 is installed between the movable base 510 and the spray nozzle 300 and the flame nozzle 400; The cam plate 530 is provided with a cam groove 531, wherein the cam groove 531 includes a straight line segment and an arc segment; The cam seat 540 is movably connected to the cam groove 531; The telescopic connecting rod 550 is connected between the movable base 510 and the cam base 540. The telescopic connecting rod 550 is fixedly connected to the movable base 510 and is connected to the cam base 540 via a ball joint. The pushing seat 560 is movably mounted on the moving seat 510 . The pushing seat 560 is provided with a rounded rectangular hole 561 . The cam seat 540 is slidably connected to the pushing seat 560 . The pushing seat 560 is driven to move by a driving device.

[0035] The movable seat 510 is driven to move stably by a driving device such as a motor, a lead screw, a lead screw nut, a slide rail, and a slider, and can move along the axis direction of the rod body 210, and can process the corresponding sphere 001 on the mounting assembly 200. The universal connection assembly 520 is connected by a hinge or a ball joint structure with two axes perpendicular to each other. The universal connection assembly 520 is connected to the cam seat 540 by a telescopic connecting rod 550. A cam groove 531 is provided on the cam plate 530, and the cam groove 531 includes two straight segments and two arc segments to form a circular path. The cam seat 540 is movably mounted on the cam plate 530 and can move along the cam groove 531. The cam seat 540 is adapted to the cam groove 531. When the cam seat 540 moves along the cam groove 531, the telescopic connecting rod 550 can adapt to the change in the distance between the desired connection component and the cam seat 540. The pushing seat 560 is installed on the moving seat 510. The pushing seat 560 is driven to move stably by a driving device such as a motor, a screw, a screw nut, a slide rail, and a slider. The rounded rectangular hole 561 is movably connected to the cam seat 540, so that the cam seat 540 can move in the rounded rectangular hole 561. The movement trajectory of the cam seat 540 in the rounded rectangular hole 561 is mainly along the direction of gravity, and the reciprocating movement of the pushing seat 560 is used to push the cam seat 540 to move.

[0036] Example 4: like Figure 4 As shown, the present application also provides a spraying method of a ball valve ball 001 spraying device, the specific steps comprising: S1, installing and connecting the sphere 001 through the mounting assembly 200, then connecting multiple mounting assemblies 200 with the spheres 001 to each other and placing them on the base 100 and installing them between the spindle box 110 and the tailstock 120; S2, controlling the flame spray head 400 through the moving assembly 500 to preheat the surface of the sphere 001 to be sprayed; S3, controlling the spray nozzle 300 to move by the moving assembly 500 to spray the spray material from the outer surface of the sphere 001 to the inner portion of the through hole within a range of X cm from the edge; S4, remove the mounting assembly 200 and the sphere 001 from the base 100 and cool them down.

[0037] The mounting assembly 200 with the sphere 001 mounted thereon is placed on the base 100, and the rotation of the sphere 001 is controlled by the base 100. The flame nozzle 400 and the spray nozzle 300 can both act on the sphere 001. The moving assembly 500 pushes the flame nozzle 400 and the spray nozzle 300 to move and act on the sphere 001. The coating 002 is sprayed on the outer surface of the sphere 001 and within a range of X cm from the edge of the through hole, which can effectively improve the surface wear resistance of the through hole edge of the sphere 001, especially the through hole edge is not easy to wear. The sphere 001 is preheated before spraying, but there are multiple spheres 001 on the base 100. When the flame nozzle 400 heats the second sphere 001, the first sphere 001 that has completed heating can be sprayed, so that preheating and spraying are carried out simultaneously, further improving production efficiency. The rod body 210 also includes parts at both ends that are convenient for installation on the base 100.

[0038] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0039] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A ball valve ball spraying device, characterized in that: include: A base (100), wherein the base (100) is provided with a spindle box (110) and a tailstock (120); A mounting assembly (200) is used to mount a fixed sphere (001), the mounting assembly (200) comprising a rod (210), an inner support seat (220), and an abutment seat (230), the abutment seat (230) abutting against an inner wall surface of a through hole of the sphere (001), the abutment seat (230) being movably mounted on the inner support seat (220), and the rod (210) and the inner support seat (220) being mounted and connected; A spray nozzle (300) for spraying a spray material; A flame nozzle (400) for spraying flames onto the sphere (001); The movable assembly (500) is movably mounted on the base (100), and the movable assembly (500) is individually and correspondingly mounted and connected to the spray nozzle (300) and the flame nozzle (400).

2. The ball valve ball spraying device according to claim 1, characterized in that: The inner support seat (220) comprises: A connecting shaft (240) is coaxially connected to the inner support seat (220) and is disposed on both sides of the inner support seat (220); A movable disk (250) is mounted on the inner support seat (220) and sleeved on the connecting shaft (240), wherein the movable disk (250) is provided with a cone portion (251), and the cone portion (251) is provided with a slide groove (252); An elastic member (260) is placed between the movable disk (250) and the inner support seat (220); Wherein, the abutting seat (230) is provided with a sliding portion (231) corresponding to the sliding groove (252).

3. The ball valve ball spraying device according to claim 2, characterized in that: The inner support seat (220) includes: A limiting member (270) is mounted on the movable body; The movable disk (250) is provided with a mounting groove (253) corresponding to the limiting member (270), and the connecting shaft (240) is provided with a limiting groove (241) corresponding to the limiting member (270).

4. The ball valve ball spraying device according to claim 2, characterized in that: The connecting shaft (240) includes: a threaded portion (242) disposed at the end of the connecting shaft (240); The rod body (210) is provided with a threaded hole (211) corresponding to the threaded portion (242).

5. The ball valve ball spraying device according to claim 1, characterized in that: The rod body (210) comprises: The plug-in portion (212) is placed on the rod body (210) on one side of the inner support seat (220); The plug hole (213) is placed on the rod body (210) on the other side of the inner support seat (220); The rod bodies (210) between two adjacent installation assemblies (200) are adapted to each other via the plug-in portion (212) and the plug-in hole (213).

6. The ball valve ball spraying device according to claim 5, characterized in that: The rod body (210) further includes: The fastener (280) is installed between the two mutually matching rods (210).

7. The ball valve ball spraying device according to claim 1, characterized in that: The moving assembly (500) comprises: A movable seat (510) is used to install a corresponding spray nozzle (300) and a flame nozzle (400), and the movable seat (510) is driven to move by a driving device; A universal connection assembly (520) is installed between the movable seat (510) and the spray nozzle (300) and the flame nozzle (400); The cam plate (530) is provided with a cam groove (531), wherein the cam groove (531) includes a straight line segment and an arc segment; A cam seat (540) is movably connected to the cam groove (531); A telescopic connecting rod (550) is connected between the movable seat (510) and the cam seat (540), wherein the telescopic connecting rod (550) is fixedly connected to the movable seat (510), and a ball joint is connected between the telescopic connecting rod (550) and the cam seat (540); The pushing seat (560) is movably mounted on the moving seat (510), the pushing seat (560) is provided with a rounded rectangular hole (561), the cam seat (540) is slidably connected to the pushing seat (560), and the pushing seat (560) is driven to move by a driving device.

8. A spraying method applicable to the ball valve ball spraying device according to claim 1, characterized in that: The specific steps include: S1, installing and connecting the sphere (001) through the installation component (200), then connecting a plurality of installation components (200) with the spheres (001) installed thereon and placing them on the base (100) and installing them between the spindle box (110) and the tailstock (120); S2, controlling the flame spray head (400) by the moving assembly (500) to preheat the surface of the sphere (001) to be sprayed; S3, controlling the spray nozzle (300) to move the spray material from the outer surface of the sphere (001) to the inside of the through hole within a range of X cm from the edge by means of the moving assembly (500); S4, removing the mounting assembly (200) and the sphere (001) as a whole from the base (100) for cooling.

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