Accurate coating atomizing and spraying processing device for water turbine component

Abstract

The invention relates to the technical field of water turbine component surface treatment, in particular to a water turbine component coating precise atomization spraying machining device which comprises a supporting frame, a positioning rotating structure is arranged in the supporting frame, and the surface of the positioning rotating structure is in threaded connection with a fixing support in a sleeving mode. A spraying structure is arranged in the fixing support, and a draft tube is arranged at the top of the supporting frame; the spraying structure comprises an outer pipe and an inner pipe, the front side of the outer pipe and the front side of the inner pipe both extend to the front side of the fixing support, a gas flow channel is formed between the outer pipe and the inner pipe, and a coating flow channel is formed in the inner pipe. The precise coating atomizing and spraying machining device for the water turbine component has the advantage that through collaborative design of a positioning rotating structure and a spraying structure, integrated spraying of dynamic positioning, airflow vibration atomization and self-adaptive spraying width adjustment is constructed.

Description

Technical Field

[0001] The present invention relates to the technical field of surface treatment of water turbine components, in particular to a precise atomization spraying processing device for coatings of water turbine components. Background Art

[0002] As we all know, a water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. It belongs to the turbine machine among fluid machinery. Since the water turbine transports fluid as energy, in order to make the water turbine have a longer service life, it is necessary to spray the surface of the water turbine with a corresponding corrosion-resistant coating.

[0003] As the core equipment for converting water flow energy into mechanical energy, hydraulic turbines have components (such as the tailwater tube) that are exposed to high-speed water flow, sediment erosion, and cavitation for a long time, resulting in significant surface corrosion and wear. Currently, spraying paint on hydraulic turbine components is an important means to improve their corrosion and wear resistance. However, the existing technology has the following obvious defects in practical applications: Existing spray devices mostly use traditional pressure atomization or pneumatic atomization methods, which are difficult to adapt to the complex shapes of turbine components, such as the large-diameter inner wall of the tailwater pipe. When spraying on the inner wall of the tailwater pipe, the distance between the nozzle and the wall is difficult to maintain constant, and the mixing state of the airflow and paint is unstable, resulting in uneven droplet size distribution, which can easily cause dripping and spray leakage in local areas. In addition, during the traditional spraying process, paint droplets are prone to rebound and splashing under the action of high-speed airflow, especially when spraying on vertical curved surfaces. The unattached paint not only causes material waste, but also forms harmful exhaust gases and waste liquids, causing pollution to the working environment. Summary of the Invention

[0004] (1) Technical problems solved In response to the shortcomings of the existing technology, the present invention provides a precise atomization and spraying processing device for coatings for turbine components, which has the advantages of integrated spraying of dynamic positioning - airflow vibration atomization - adaptive spray width adjustment through the coordinated design of the positioning rotation structure and the spraying structure.

[0005] (2) Technical solution The above technical objectives of the present invention are achieved through the following technical solutions: A precise atomization spraying device for coatings used in turbine components, comprising a support frame, a positioning and rotating structure provided inside the support frame, a fixed bracket threadedly sleeved on the surface of the positioning and rotating structure, a spraying structure provided inside the fixed bracket, and a draft tube provided on the top of the support frame; The injection structure includes an outer tube and an inner tube, the front sides of the outer tube and the inner tube both extend to the front side of the fixed bracket, a gas flow channel is formed between the outer tube and the inner tube, the interior of the inner tube is a paint flow channel, a collar is provided on the rear side of the outer tube surface, and an electric cylinder is provided on the top inside the collar, the left side of the electric cylinder is bolted to a limit frame, and an atomizing injection mechanism is slidingly provided inside the limit frame, an elastic adjustment rod is slidingly provided on the front side of the limit frame, and the left side of the elastic adjustment rod is in sliding contact with the inner wall of the tail water pipe, and the elastic adjustment rod is bolted to the atomizing injection mechanism.

[0006] By adopting the above technical solution, by setting up a spray structure, the gas and paint can be transported synchronously through the gas channel formed between the outer tube and the inner tube and the paint channel in the inner tube. By setting up the electric cylinder, the distance between the atomizing spray mechanism and the inner wall surface of the tailwater pipe can be adjusted over a wide range, and the elastic adjustment rod can adapt to the surface changes of the inner wall surface of the tailwater pipe, so that the atomizing spray mechanism can adapt to the surface changes of the inner wall surface of the tailwater pipe, so that the atomizing spray mechanism can maintain a constant distance from the inner wall surface of the tailwater pipe, thereby improving the spray quality.

[0007] The present invention is further configured as follows: the atomizing spray mechanism includes a spray block, a paint channel is opened on the right side inside the spray block, and a paint nozzle is arranged on the left side inside the spray block, the paint nozzle is connected to the paint channel, the left side of the spray block is connected to a gas guide seat, and the gas guide seat is on the surface of the paint nozzle, the left side of the spray block is bolted with a barrier assembly, and the barrier assembly is on the surface of the gas guide seat, the left side of the gas guide seat is bolted with a spray width adjustment assembly, the spray width adjustment assembly is used in conjunction with the barrier assembly, a vibrating atomization assembly is arranged in the middle part of the inside of the spray block, and the vibrating atomization assembly is respectively connected to the paint channel and the paint nozzle, gas channels are opened at the top and bottom of the inside of the spray block, the edge of the vibrating atomization assembly is inside the gas channel, and the gas channel is respectively connected to the gas guide seat and the barrier assembly.

[0008] By adopting the above technical solution and setting up an atomizing spray mechanism, the paint flows into the paint channel through the inner tube and enters the vibrating atomizing component through the paint nozzle, and the air flow enters the gas channel through the gas flow channel of the outer tube and the inner tube. When the air flow contacts the vibrating atomizing component, the air flow is used to excite the vibrating atomizing component to vibrate at high frequency, which can improve the uniformity of the droplet particle size when the paint passes through the vibrating atomizing component, thereby improving the spray quality. When part of the air flow flows into the gas guide seat, the atomized paint can be mixed with the air flow, and a stable spray flow is formed by the barrier component and the spray width adjustment component, and then sprayed on the inner wall surface of the tail water pipe, which can reduce the risk of sagging. In this process, the spray width adjustment component can adjust the spray range of the spray flow according to the diameter of the tapered tail water pipe, while ensuring The spraying quality can be improved while the spraying efficiency can be improved. The blocking range of the blocking component will be adjusted synchronously during the adjustment process of the spray width adjustment component, so that the blocking component can adapt to the spraying range and improve flexibility. During the spraying process, the blocking component can guide part of the airflow to the left end of the spray block and form an annular air curtain, which can prevent the paint droplets from rebounding and splashing under the action of high-speed airflow, and due to the narrow space channel in the blocking component, when the airflow passes through here, the friction between the air in the channel and the channel wall will increase due to the acceleration of the air flow rate, resulting in an increase in the temperature of the discharged air. Therefore, it can play a role in preliminarily solidifying the sprayed paint and drying the unsprayed area, which can further optimize the spraying effect.

[0009] The present invention is further configured as follows: the rear side of the injection block is connected with a telescopic air pipe and a telescopic liquid pipe respectively, the left sides of the telescopic air pipe and the telescopic liquid pipe are connected with the gas channel and the paint channel respectively, and the telescopic air pipe and the telescopic liquid pipe are connected with the outer pipe and the inner pipe respectively.

[0010] By adopting the above technical solution, the telescopic air pipe and the telescopic liquid pipe are set up, which can be extended and retracted as the injection block moves, thereby maintaining a continuous supply of gas and paint. When the injection structure moves along the inner wall of the tailwater pipe, the elastic deformation of the hose adapts to the position change, avoiding the pulling and damage of the pipeline.

[0011] The present invention is further configured as follows: the vibrating atomization assembly includes a vibrating diaphragm, the vibrating diaphragm is arranged in the middle of the injection block, and the edge of the vibrating diaphragm is in the gas channel, the inside of the vibrating diaphragm is bolted with a fixed plate, the rear side of the fixed plate is bolted with a conical spacer, and the surface of the conical spacer is provided with a spiral guide groove, the surface of the fixed plate is annularly bolted with a spacer, and the fixed plate is bolted to the vibrating diaphragm through the spacer, the top and bottom of the inside of the vibrating diaphragm are provided with flow holes, and the inside of the flow hole is bolted with a pillar, and elastic sheets are provided in a ring shape on both sides of the surface of the pillar.

[0012] By adopting the above technical solution and setting up a vibrating atomization component, when the air flow passes through the flow hole, the elastic sheet changes the flow area of ​​the flow hole. Therefore, the air flow will be constrained due to the narrow space when passing through this place, and a high-speed jet will be formed due to the constraint of the wall. The turbulent pulsation inside the air flow and the friction with the wall will cause periodic fluctuations, thereby generating vibrations, and causing the elastic sheet to vibrate, and then transmit the vibrations to the vibrating diaphragm, fixed plate and conical spacer, cutting the paint into fine droplets, thereby improving the uniformity of the paint droplet particle size and reducing the risk of hanging flow.

[0013] The present invention is further configured as follows: the side of the elastic sheet close to the pillar is a fixed end, and the other end is a suspended end; several elastic sheets on the same side are arranged as a group, and the two groups of elastic sheets are staggered.

[0014] By adopting the above technical solution, the vibration frequency can be kept stable by arranging elastic deformation of the fixed end and the suspended end of the elastic sheet to absorb the impact of the airflow.

[0015] The present invention is further configured as follows: the barrier assembly includes two coaxially arranged guide rings, the guide rings are located on the surface of the gas guide seat, a first flexible connection portion is provided on the left side of the guide ring, an adjustment ring is provided on the left side of the first flexible connection portion, a plurality of support blocks are bolted between the opposite sides of the two adjustment rings, a guide channel is formed between the two guide rings and the opposite side of the adjustment ring, and the guide channel is connected to the gas channel.

[0016] By adopting the above technical solution, a barrier component is set up, and the air flow enters the guide channel through the gas channel. Through the cooperation of the first flexible connection part and the adjustment ring, an annular air curtain is formed to wrap the droplets. The annular air curtain can prevent the droplets from splashing, improve the coating adhesion rate, and reduce material waste. In addition, due to the narrow space channel in the barrier component, when the air flow passes through here, the friction between the air in the channel and the channel wall will increase due to the acceleration of the air flow rate, resulting in an increase in the temperature of the discharged air. Therefore, it can play the role of preliminarily solidifying the sprayed paint and drying the unsprayed area, which can further optimize the spraying effect, and the support block supports the adjustment ring to remain stable to prevent the air curtain from being turbulent.

[0017] The present invention is further configured as follows: the spray width adjustment assembly includes two second flexible connection parts, the second flexible connection part is arranged on the left side of the gas guide seat, and the second flexible connection part is coaxially arranged with the gas guide seat, an elastic adjustment plate is provided on the left side of the second flexible connection part, the top and bottom of the gas guide seat are bolted with electromagnets, and magnetic parts are provided on the opposite sides of the two electromagnets, the electromagnets and the magnetic parts are magnetically matched, and the side of the magnetic part close to the elastic adjustment plate is bolted to it, the left side of the magnetic part is bolted with a flexible rod, and the other side of the flexible rod is connected to the inner wall of the internal adjustment ring.

[0018] By adopting the above technical solution, a spray width adjustment component is set up. When the diameter of the conical tailwater pipe is smaller, the distance between the two elastic adjustment plates is the largest. At this time, the area of ​​the injection channel is larger, and the spray flow is injected on the inner wall surface in a more concentrated manner. When the diameter of the injection pipe is larger, the electromagnet is energized to generate an attractive magnetic field, which can attract the magnetic plate to move toward the electromagnet and drive the two elastic adjustment plates to stretch, so that the two elastic adjustment plates are deformed inward at the position of the second flexible connection part, which can reduce the injection channel. In this way, the spray flow is injected on the inner wall surface in a fan shape when passing through this place, so that the injection range of the spray flow can be adjusted according to the diameter of the conical tailwater pipe, while ensuring the injection quality and improving the injection efficiency.

[0019] The present invention is further configured as follows: a support plate is bolted to the rear side of the fixed bracket, a connecting ring is provided on the rear side of the support plate, and the connecting ring and the branch plate are both sleeved on the surface of the outer tube, a damping rod is connected to the inside of the connecting ring in a circular rotation, and the damping rod is connected to the support plate on one side for rotation.

[0020] By adopting the above technical solution, by setting up damping rods distributed in a circular shape, the angle deviation of the outer tube due to gravity can be avoided, ensuring that the nozzle is always perpendicular to the wall surface, thereby improving the spraying accuracy.

[0021] The present invention is further configured as follows: the positioning and rotating structure includes a mounting bracket, the top of the mounting bracket is bolted with a reduction motor, and the output end of the reduction motor is bolted with a drive shaft, the front side of the drive shaft is bolted with a fixed frame, the internal rotation of the fixed frame is connected to a longitudinal reciprocating screw, the surface of the longitudinal reciprocating screw is threadedly sleeved with a connecting block, and the other end of the connecting block is bolted with a pressure block, the side of the pressure block close to the tail water pipe is in close contact with it, the internal rotation of the support frame is connected to a transverse reciprocating screw, the rear side of the transverse reciprocating screw extends to the rear side of the support frame and is bolted with a connecting shaft, and the fixed bracket is threadedly sleeved on the surface of the transverse reciprocating screw.

[0022] By adopting the above technical solution, a positioning rotation structure is set up, and the longitudinal reciprocating screw is driven to rotate by an external driving device, so that the two connecting blocks can move relative to each other along the longitudinal reciprocating screw, so that the pressure block can tightly contact the surface of the tailwater pipe, thereby positioning it. The reduction motor drives the fixed frame to rotate through the drive shaft, so that the tailwater pipe can rotate synchronously, so the inner wall of the tailwater pipe can be evenly sprayed in conjunction with the injection structure, thereby improving the uniformity of the coating on the inner wall of the tailwater pipe. During the rotation of the drive shaft, the connecting shaft and the transverse reciprocating screw will be synchronously driven to rotate, so that the fixed bracket can synchronously drive the displacement of the injection structure, so that the rotation of the tailwater pipe and the displacement of the injection structure are kept at the same frequency, thereby improving construction consistency and avoiding leakage and uneven injection.

[0023] The present invention is further configured as follows: the surfaces of the connecting shaft and the driving shaft are both sleeved with transmission wheels, and a belt is wrapped between the insides of the two transmission wheels; the front side of the bottom of the tailwater pipe is in rotational contact with a positioning frame, and the bottom of the positioning frame is bolted to the support frame.

[0024] By adopting the above technical solution, by setting up a transmission wheel and a belt, the driving shaft and the connecting shaft can be rotated synchronously, and the positioning frame can be realized to support the front end of the tailwater pipe and enable it to rotate stably.

[0025] (3) Beneficial effects Compared with the prior art, the present invention provides a precise atomization spraying device for coatings on turbine components, which has the following beneficial effects: The precise atomizing and spraying device for coatings of turbine components realizes real-time pressure on the inner wall of the tailwater pipe through the linkage of the longitudinal reciprocating screw and the transverse reciprocating screw in the positioning and rotating structure, and at the same time drives the tailwater pipe to rotate with the spraying structure as the axis, and can cooperate with the spraying structure to evenly spray the inner wall of the tailwater pipe, thereby improving the uniformity of the coating on the inner wall of the tailwater pipe. The elastic adjustment rod and the electric cylinder in the spraying structure can be set to enable the atomizing and spraying mechanism to maintain a constant distance between itself and the inner wall of the tailwater pipe, thereby ensuring the spraying quality. The high-frequency vibration of the vibrating atomizing component is stimulated by airflow, and the dual-fluid atomization of the gas flow channel and the coating flow channel is combined to improve the uniformity of the droplet particle size, thereby avoiding dripping and leaking. At the same time, during the spraying process, the barrier component can dynamically adjust the spray width according to the curvature of the curved surface together with the spray width adjustment component to adjust the blocking range. The airflow flows out of the barrier component to form an air curtain, which can prevent the rebound and splashing of the coating droplets under the action of the high-speed airflow, thereby further optimizing the coating uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection between the positioning rotation structure and the injection structure in the present invention; Figure 3 Schematic diagram of the injection structure of the present invention; Figure 4 Schematic diagram of the structure of the atomizing spray mechanism of the present invention; Figure 5 Schematic diagram of the structure of the vibration atomization component of the present invention; Figure 6 This is a schematic diagram of the connection between the barrier component and the injection adjustment mechanism in the present invention; Figure 7 It is a schematic diagram of the connection between the fixed support and the local structure of the injection structure in the present invention; Figure 8It is a schematic diagram of the connection between the tailwater pipe and the positioning rotation structure in the present invention.

[0027] In the figure: 1. Support frame; 2. Positioning and rotating structure; 21. Mounting bracket; 22. Drive shaft; 23. Fixed frame; 24. Longitudinal reciprocating screw; 25. Connecting block; 26. Pressing block; 27. Transverse reciprocating screw; 28. Connecting shaft; 3. Fixed bracket; 4. Spraying structure; 41. Outer tube; 42. Inner tube; 43. Collar; 44. Electric cylinder; 45. Limiting frame; 46. Atomizing spraying mechanism; 461. Spraying block; 462. Paint spraying pipe; 463. Gas guide seat; 464. Barrier assembly; 464a. Guide ring; 464b. First flexible connecting part; 464c. Adjusting ring; 464d. Support block; 464e. Guide channel; 465, spray width adjustment component; 465a, second flexible connecting part; 465b, elastic adjustment plate; 465c, electromagnet; 465d, magnetic part; 465e, flexible rod; 466, vibration atomization component; 466a, vibration diaphragm; 466b, fixing plate; 466c, conical spacer; 466d, spiral guide groove; 466e, spacer; 466f, flow hole; 466g, support; 466h, elastic plate; 47, elastic adjustment rod; 5, tailwater pipe; 6, telescopic air pipe; 7, telescopic liquid pipe; 8, support plate; 9, connecting ring; 10, damping rod; 11, transmission wheel; 12, belt; 13, positioning frame. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1 See also Figure 1-7 A precise atomizing spraying device for coating components of a hydraulic turbine comprises a support frame 1, a positioning and rotating structure 2 is provided inside the support frame 1, a fixed bracket 3 is threadedly sleeved on the surface of the positioning and rotating structure 2, a spraying structure 4 is provided inside the fixed bracket 3, and a draft tube 5 is provided on the top of the support frame 1; The spray structure 4 includes an outer tube 41 and an inner tube 42. The front sides of the outer tube 41 and the inner tube 42 extend to the front side of the fixed bracket 3. A gas flow channel is formed between the outer tube 41 and the inner tube 42. The interior of the inner tube 42 is a paint flow channel. A collar 43 is provided on the rear side of the surface of the outer tube 41, and an electric cylinder 44 is provided on the top of the collar 43. The left side of the electric cylinder 44 is bolted to a limit frame 45, and an atomizing spray mechanism 46 is provided in the inner sliding of the limit frame 45. An elastic adjustment rod 47 is slidably provided on the front side of the limit frame 45, and the left side of the elastic adjustment rod 47 is in sliding contact with the inner wall of the tail water pipe 5. The elastic adjustment rod 47 is in sliding contact with the mist The atomizing injection mechanism 46 is bolted, and by setting the injection structure 4, the gas channel formed between the outer tube 41 and the inner tube 42 and the paint channel in the inner tube 42 can realize the synchronous transportation of gas and paint. By setting the electric cylinder 44, the distance between the atomizing injection mechanism 46 and the inner wall surface of the tail water pipe 5 can be adjusted in a wide range, and the elastic adjustment rod 47 can adapt to the surface change of the inner wall surface of the tail water pipe 5, so that the atomizing injection mechanism 46 can adapt to the surface change of the inner wall surface of the tail water pipe 5, so that the atomizing injection mechanism 46 can maintain a constant distance from the inner wall surface of the tail water pipe 5, thereby improving the injection quality.

[0030] Among them, the atomizing spray mechanism 46 includes a spray block 461, a paint channel is opened on the right side of the inside of the spray block 461, and a paint nozzle 462 is set on the left side of the inside of the spray block 461, the paint nozzle 462 is connected to the paint channel, the left side of the spray block 461 is connected to the gas guide seat 463, and the gas guide seat 463 is on the surface of the paint nozzle 462, the left side of the spray block 461 is bolted with a blocking component 464, and the blocking component 464 is on the surface of the gas guide seat 463, the left side of the gas guide seat 463 is bolted with a spray width adjustment component 465, the spray width adjustment component 465 is used in conjunction with the blocking component 464, the inside of the spray block 461 A vibrating atomizing assembly 466 is provided in the middle, and the vibrating atomizing assembly 466 is communicated with the paint channel and the paint nozzle 462 respectively. Gas channels are provided at the top and bottom of the injection block 461. The edge of the vibrating atomizing assembly 466 is located inside the gas channel. The gas channel is communicated with the gas guide seat 463 and the barrier assembly 464 respectively. By setting the atomizing injection mechanism 46, the paint flows into the paint channel through the inner tube 42 and enters the vibrating atomizing assembly 466 through the paint nozzle 462. The airflow enters the gas channel through the gas flow channels of the outer tube 41 and the inner tube 42. When the airflow contacts the vibrating atomizing assembly 466, the airflow is used to excite the vibrating atomizing assembly 466. The high-frequency vibration of component 466 can improve the uniformity of the droplet size when the paint passes through the vibrating atomizing component 466, thereby improving the spray quality. When part of the airflow flows into the gas guide seat 463, the atomized paint can be mixed with the airflow, and a stable spray flow is formed through the barrier component 464 and the spray width adjustment component 465, and then sprayed on the inner wall surface of the tail water pipe 5, which can reduce the risk of sagging. In this process, the spray width adjustment component 465 can adjust the spray range of the spray flow according to the diameter of the tapered tail water pipe 5, while ensuring the spray quality and improving the spray efficiency. During the adjustment process of the spray width adjustment component 465, the barrier component 464 will be adjusted synchronously. The blocking range enables the blocking component 464 to adapt to the spraying range and improves flexibility. During the spraying process, the blocking component 464 can guide part of the airflow to the left end of the spray block 461 and form an annular air curtain, which can prevent the paint droplets from rebounding and splashing under the action of high-speed airflow. In addition, due to the narrow space channel in the blocking component 464, when the airflow passes through here, the air flow rate is accelerated, so that the friction between the air in the channel and the channel wall will increase, resulting in an increase in the temperature of the discharged air. Therefore, it can play a role in preliminarily solidifying the sprayed paint and drying the unsprayed area, which can further optimize the spraying effect.

[0031] Among them, the rear side of the injection block 461 is respectively connected with a telescopic air pipe 6 and a telescopic liquid pipe 7, the left sides of the telescopic air pipe 6 and the telescopic liquid pipe 7 are respectively connected with the gas channel and the paint channel, the telescopic air pipe 6 and the telescopic liquid pipe 7 are respectively connected with the outer pipe 41 and the inner pipe 42. Through the setting of the telescopic air pipe 6 and the telescopic liquid pipe 7, they can be extended and retracted as the injection block 461 moves, maintaining a continuous supply of gas and paint. When the injection structure 4 moves along the inner wall of the tail water pipe 5, the elastic deformation of the hose adapts to the position change to avoid damage to the pipeline due to pulling.

[0032] Among them, the vibrating atomization component 466 includes a vibrating diaphragm 466a, which is arranged in the middle of the injection block 461, and the edge of the vibrating diaphragm 466a is in the gas channel. The interior of the vibrating diaphragm 466a is bolted with a fixed plate 466b, and the rear side of the fixed plate 466b is bolted with a conical spacer 466c, and the surface of the conical spacer 466c is provided with a spiral guide groove 466d. The surface of the fixed plate 466b is annularly bolted with a spacer 466e, and the fixed plate 466b is bolted to the vibrating diaphragm 466a through the spacer 466e. The top and bottom of the interior of the vibrating diaphragm 466a are provided with flow holes 466f, and the interior of the flow hole 466f is bolted with a support 466g. , elastic sheets 466h are provided in a ring shape on both sides of the surface of the pillar 466g. By setting the vibrating atomizing component 466, when the airflow passes through the flow hole 466f, the elastic sheet 466h changes the flow area of ​​the flow hole 466f. Therefore, the airflow will be constrained due to the narrow space when passing through this place, and a high-speed jet will be formed due to the constraint of the wall. The turbulent pulsation inside the airflow and the friction with the wall will cause periodic fluctuations, which will generate vibration and make the elastic sheet 466h vibrate, and then transmit the vibration to the vibrating diaphragm 466a, the fixed plate 466b and the conical spacer 466e, cutting the paint into fine droplets, so that the uniformity of the paint droplet particle size is improved, and the risk of hanging flow can be reduced.

[0033] Among them, the side of the elastic sheet 466h close to the pillar 466g is a fixed end, and the other end is a suspended end. Several elastic sheets 466h on the same side are arranged as a group, and the two groups of elastic sheets 466h are staggered. By arranging the elastic deformation of the fixed end and the suspended end of the elastic sheet 466h to absorb the impact of the airflow, the vibration frequency can be maintained stable.

[0034] Among them, the blocking component 464 includes two coaxially arranged guide rings 464a, the guide ring 464a is on the surface of the gas guide seat 463, and a first flexible connection part 464b is provided on the left side of the guide ring 464a. An adjustment ring 464c is provided on the left side of the first flexible connection part 464b, and a plurality of support blocks 464d are bolted between the opposite sides of the two adjustment rings 464c. A guide channel 464e is formed between the two guide rings 464a and the opposite side of the adjustment ring 464c, and the guide channel 464e is connected to the gas channel. By setting the blocking component 464, the airflow enters the guide channel 464e through the gas channel and passes through the first flexible connection part 464b. A flexible connecting portion 464b cooperates with the adjustment ring 464c to form an annular air curtain to wrap the droplets. The annular air curtain can prevent the droplets from splashing, improve the coating adhesion rate, and reduce material waste. In addition, due to the narrow space channel in the barrier component 464, when the air flow passes through here, the air flow rate is accelerated, which increases the friction between the air in the channel and the channel wall, resulting in an increase in the temperature of the discharged air. Therefore, it can play a role in preliminarily solidifying the sprayed paint and drying the unsprayed area, which can further optimize the spraying effect. The support block 464d supports the adjustment ring 464c to maintain stability and prevent the air curtain from being turbulent.

[0035] Among them, the spray width adjustment component 465 includes two second flexible connecting parts 465a, the second flexible connecting part 465a is arranged on the left side of the gas guide seat 463, and the second flexible connecting part 465a is coaxially arranged with the gas guide seat 463, and an elastic adjustment piece 465b is provided on the left side of the second flexible connecting part 465a, and the top and bottom of the gas guide seat 463 are bolted with electromagnets 465c, and the two electromagnets 465c are provided with magnetic parts 465d on the opposite sides. The electromagnets 465c are magnetically matched with the magnetic parts 465d, and the magnetic part 465d is bolted to the side close to the elastic adjustment piece 465b, and the left side of the magnetic part 465d is bolted with a flexible rod 465e, and the other side of the flexible rod 465e is connected to the inner of the internal adjustment ring 464c. The wall is connected, and a spray width adjustment component is set. When the diameter of the conical tailwater pipe 5 is small, the distance between the two elastic adjustment pieces 465b is the largest. At this time, the area of ​​the injection channel is large, and the spray flow is injected on the inner wall surface in a more concentrated manner. When the diameter of the injection is large, the electromagnet 465c is energized to generate an attractive magnetic field, which can attract the magnetic piece to move toward the electromagnet 465c and drive the two elastic adjustment pieces 465b to stretch, so that the two elastic adjustment pieces 465b are deformed inward at the position of the second flexible connection part 465a, which can reduce the injection channel, so that the spray flow is injected on the inner wall surface in a fan shape when passing through this place, so that the injection range of the spray flow can be adjusted according to the diameter of the conical tailwater pipe 5, while ensuring the injection quality and improving the injection efficiency.

[0036] Among them, the rear side of the fixed bracket 3 is bolted with a support plate 8, and the rear side of the support plate 8 is provided with a connecting ring 9, and the connecting ring 9 and the branch plate 8 are both sleeved on the surface of the outer tube 41, and the inside of the connecting ring 9 is connected to the damping rod 10 in a circular rotation, and the damping rod 10 is connected to the support plate 8 on the side thereof for rotation. By setting the damping rod 10 distributed in a circular shape, the angle deviation of the outer tube 41 caused by gravity can be avoided, ensuring that the nozzle is always perpendicular to the wall surface, thereby improving the spraying accuracy.

[0037] The working principle of this embodiment is as follows: the paint flows into the paint channel of the atomizing spray mechanism 46 through the inner tube 42 and the telescopic liquid tube 7, and the gas flows into the gas channel through the gas flow channel between the outer tube 41 and the inner tube 42 and the telescopic gas tube 6. The electric cylinder 44 drives the atomizing spray mechanism 46 as a whole to move closer to or away from the inner wall of the tailwater pipe 5 by adjusting the position of the limit frame 45 through telescopic adjustment, thereby achieving a wide range of distance adjustment. The elastic adjustment rod 47 slides along the undulation of the inner wall surface, pushing the atomizing spray mechanism 46 to adapt to the change of the curved surface and maintain a constant distance from the wall surface. When the airflow passes through the flow hole 466f, the elastic sheet 466h changes the flow area of ​​the flow hole 466f, so When the airflow passes through this area, it will be constrained due to the narrow space and will form a high-speed jet due to the constraint of the wall. The turbulent pulsation inside the airflow and the friction with the wall will cause periodic fluctuations, which will generate vibrations and make the elastic sheet 466h vibrate along with it, and then transmit the vibrations to the vibrating diaphragm 466a, the fixed plate 466b and the conical spacer 466e, cutting the paint into fine droplets, so that the uniformity of the paint droplet particle size is improved, and the atomized droplets enter the paint nozzle 462, and the gas guide seat 463 guides part of the airflow to the paint nozzle 462 to mix with the droplets, and then forms a stable spray flow through the channel in the spray width adjustment component 465 and is sprayed. On the inner wall of the tailwater pipe 5; during the spraying process, part of the air flow enters the guide channel 464e through the gas channel, and forms an annular air curtain to wrap the droplets through the cooperation of the first flexible connecting part 464b and the adjusting ring 464c. The annular air curtain can prevent the droplets from splashing, improve the coating adhesion rate, and reduce material waste. In addition, due to the narrow space channel in the barrier component 464, when the air flow passes through here, the friction between the air in the channel and the channel wall will increase due to the acceleration of the air flow rate, resulting in an increase in the temperature of the discharged air. Therefore, the sprayed paint can be preliminarily cured and the unsprayed area can be dried; in the spray cone When the diameter of the tailwater pipe 5 is relatively small, the distance between the two elastic adjustment pieces 465b is the largest. At this time, the injection channel area is relatively large, and the spray flow is sprayed on the inner wall surface in a relatively concentrated manner. When the injection diameter is relatively large, the electromagnet 465c is energized to generate an attractive magnetic field, which can attract the magnetic piece to move toward the electromagnet 465c and drive the two elastic adjustment pieces 465b to stretch, so that the two elastic adjustment pieces 465b are deformed inward at the position of the second flexible connection part 465a, which can reduce the injection channel, so that the spray flow is sprayed on the inner wall surface in a fan shape when passing through this place, so that the injection range of the spray flow can be adjusted according to the diameter of the conical tailwater pipe 5.

[0038] Example 2 refer to Figure 8, a coating precision atomization spray processing device for turbine components also includes a positioning rotation structure 2, wherein the positioning rotation structure 2 includes a mounting bracket 21, the top of the mounting bracket 21 is bolted with a reduction motor, and the output end of the reduction motor is bolted with a drive shaft 22, the front side of the drive shaft 22 is bolted with a fixed frame 23, the internal rotation of the fixed frame 23 is connected to a longitudinal reciprocating screw rod 24, the surface of the longitudinal reciprocating screw rod 24 is threadedly sleeved with a connecting block 25, and the other end of the connecting block 25 is bolted with a pressure block 26, and the pressure block 26 is in close contact with the side close to the tail water pipe 5, the internal rotation of the support frame 1 is connected to a transverse reciprocating screw rod 27, the rear side of the transverse reciprocating screw rod 27 extends to the rear side of the support frame 1 and is bolted with a connecting shaft 28, the fixed bracket 3 is threadedly sleeved on the surface of the transverse reciprocating screw rod 27, by setting The positioning rotating structure 2 is arranged, and the longitudinal reciprocating screw 24 is driven to rotate by an external driving device, so that the two connecting blocks 25 can move relative to each other along the longitudinal reciprocating screw 24, so that the pressing block 26 can tightly contact the surface of the tail water pipe 5, thereby positioning it. The fixed frame 23 is driven to rotate by the reduction motor through the drive shaft 22, so that the tail water pipe 5 can rotate synchronously, so that the inner wall of the tail water pipe 5 can be evenly sprayed in cooperation with the injection structure 4, thereby improving the uniformity of the coating on the inner wall of the tail water pipe 5. During the rotation of the drive shaft 22, the connecting shaft 28 and the transverse reciprocating screw 27 will be synchronously driven to rotate, so that the fixed bracket 3 can synchronously drive the injection structure 4 to move, so that the rotation of the tail water pipe 5 and the displacement of the injection structure 4 are kept at the same frequency, thereby improving the construction consistency and avoiding the occurrence of missed spraying and uneven spraying.

[0039] Among them, the surfaces of the connecting shaft 28 and the driving shaft 22 are both sleeved with a transmission wheel 11, and a belt 12 is wound between the insides of the two transmission wheels 11. The front side of the bottom of the tailwater pipe 5 is in rotational contact with a positioning frame 13, and the bottom of the positioning frame 13 is bolted to the support frame 1. By setting the transmission wheel 11 and the belt 12, the effect of synchronous rotation of the driving shaft 22 and the connecting shaft 28 can be achieved, and the positioning frame 13 can be realized to support the front end of the tailwater pipe 5 and enable it to rotate stably.

[0040] The working principle of this embodiment is as follows: after the front end of the tailwater pipe 5 is placed on the positioning frame 13, the longitudinal reciprocating screw 24 is driven to rotate by an external driving device, so that the two connecting blocks 25 can move relative to each other along the longitudinal reciprocating screw 24, so that the pressing block 26 can tightly contact the surface of the tailwater pipe 5 to position the tailwater pipe 5, and the fixed frame 23 is driven to rotate by the reduction motor through the drive shaft 22, so that the tailwater pipe 5 can rotate synchronously, so that the inner wall of the tailwater pipe 5 can be evenly sprayed in cooperation with the injection structure 4, thereby improving the uniformity of the coating on the inner wall of the tailwater pipe 5. During the rotation of the drive shaft 22, the transmission wheel 11 and the belt 12 will be synchronously driven to rotate, and the transmission connection between the transmission wheel 11 and the belt 12 will be used to rotate the connecting shaft 28 and the transverse reciprocating screw 27, so that the fixed bracket 3 can synchronously drive the injection structure 4 to move, so that the rotation of the tailwater pipe 5 and the displacement of the injection structure 4 are kept at the same frequency, thereby improving the construction consistency.

[0041] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for precise atomization spraying of coatings for turbine components, comprising a support frame (1), characterized in that: A positioning rotation structure (2) is provided inside the support frame (1), and a fixed bracket (3) is threadedly sleeved on the surface of the positioning rotation structure (2), a spray structure (4) is provided inside the fixed bracket (3), and a tailwater pipe (5) is provided on the top of the support frame (1); The spray structure (4) comprises an outer tube (41) and an inner tube (42), the front sides of the outer tube (41) and the inner tube (42) both extend to the front side of the fixed bracket (3), a gas flow channel is formed between the outer tube (41) and the inner tube (42), the interior of the inner tube (42) is a paint flow channel, a collar (43) is provided on the rear side of the surface of the outer tube (41), and an electric cylinder (44) is provided on the top of the collar (43), the left side of the electric cylinder (44) is bolted to a limit frame (45), and an atomizing spray mechanism (46) is slidably provided inside the limit frame (45), an elastic adjustment rod (47) is slidably provided on the front side of the limit frame (45), and the left side of the elastic adjustment rod (47) is in sliding contact with the inner wall of the tailwater pipe (5), and the elastic adjustment rod (47) is bolted to the atomizing spray mechanism (46); The atomizing spray mechanism (46) includes a spray block (461), a paint channel is provided on the right side of the inside of the spray block (461), and a paint nozzle (462) is provided on the left side of the inside of the spray block (461), the paint nozzle (462) is connected to the paint channel, the left side of the spray block (461) is connected to a gas guide seat (463), and the gas guide seat (463) is located on the surface of the paint nozzle (462), the left side of the spray block (461) is bolted with a blocking component (464), and the blocking component (464) is located on the surface of the gas guide seat (463), and the gas A spray width adjustment component (465) is bolted to the left side of the body guide seat (463), and the spray width adjustment component (465) is used in conjunction with the barrier component (464). A vibration atomization component (466) is provided in the middle of the interior of the injection block (461), and the vibration atomization component (466) is communicated with the paint channel and the paint nozzle (462) respectively. Gas channels are provided at the top and bottom of the interior of the injection block (461), and the edge of the vibration atomization component (466) is located inside the gas channel, and the gas channel is communicated with the gas guide seat (463) and the barrier component (464) respectively.

2. The device for precise atomization and spraying of coatings for turbine components according to claim 1, characterized in that: The rear side of the injection block (461) is connected to a telescopic air pipe (6) and a telescopic liquid pipe (7), respectively. The left sides of the telescopic air pipe (6) and the telescopic liquid pipe (7) are connected to the gas channel and the paint channel, respectively. The telescopic air pipe (6) and the telescopic liquid pipe (7) are connected to the outer pipe (41) and the inner pipe (42), respectively.

3. The device for precise atomization and spraying of coatings for turbine components according to claim 1, characterized in that: The vibrating atomizing assembly (466) includes a vibrating diaphragm (466a), which is arranged in the middle of the injection block (461), and the edge of the vibrating diaphragm (466a) is located in the gas channel. A fixing plate (466b) is bolted to the inside of the vibrating diaphragm (466a), and a conical spacer (466c) is bolted to the rear side of the fixing plate (466b), and a spiral guide groove (466c) is provided on the surface of the conical spacer (466c). 6d), the surface of the fixed plate (466b) is annularly bolted with a spacer (466e), and the fixed plate (466b) is bolted to the vibration diaphragm (466a) through the spacer (466e), and the top and bottom of the inside of the vibration diaphragm (466a) are provided with flow holes (466f), and the inside of the flow hole (466f) is bolted with a pillar (466g), and elastic sheets (466h) are provided on both sides of the surface of the pillar (466g) in the shape of a ring.

4. The device for precise atomization and spraying of coatings for turbine components according to claim 3, characterized in that: The side of the elastic sheet (466h) close to the pillar (466g) is a fixed end, and the other end is a suspended end. Several elastic sheets (466h) on the same side are arranged as a group, and the two groups of elastic sheets (466h) are staggered.

5. The device for precise atomization and spraying of coatings for turbine components according to claim 1, characterized in that: The barrier assembly (464) includes two coaxially arranged guide rings (464a), the guide rings (464a) are located on the surface of the gas guide seat (463), a first flexible connection portion (464b) is provided on the left side of the guide ring (464a), an adjustment ring (464c) is provided on the left side of the first flexible connection portion (464b), a plurality of support blocks (464d) are bolted between opposite sides of the two adjustment rings (464c), a guide channel (464e) is formed between the two guide rings (464a) and the opposite sides of the adjustment ring (464c), and the guide channel (464e) is connected to the gas channel.

6. The device for precise atomization and spraying of coatings for turbine components according to claim 5, characterized in that: The spray width adjustment assembly (465) includes two second flexible connecting parts (465a), the second flexible connecting part (465a) is arranged on the left side of the gas guide seat (463), and the second flexible connecting part (465a) is coaxially arranged with the gas guide seat (463), and an elastic adjustment piece (465b) is arranged on the left side of the second flexible connecting part (465a), the top and bottom of the gas guide seat (463) are bolted with electromagnets (465c), and the two electromagnets (465c) are provided with magnetic parts (465d) on opposite sides, the electromagnets (465c) and the magnetic parts (465d) are magnetically matched, and the magnetic part (465d) is bolted to the elastic adjustment piece (465b) on the side close to it, and the left side of the magnetic part (465d) is bolted with a flexible rod (465e), and the other side of the flexible rod (465e) is connected to the inner wall of the internal adjustment ring (464c).

7. The device for precise coating atomization and spraying for turbine components according to claim 1, characterized in that: A support plate (8) is bolted to the rear side of the fixing bracket (3), a connecting ring (9) is provided on the rear side of the support plate (8), and the connecting ring (9) and the support plate (8) are both sleeved on the surface of the outer tube (41), a damping rod (10) is connected to the inside of the connecting ring (9) in an annular rotational manner, and the damping rod (10) is rotationally connected to the support plate (8) on a side close to the support plate (8).

8. The device for precise coating atomization and spraying for turbine components according to claim 1, characterized in that: The positioning rotation structure (2) includes a mounting bracket (21), the top of the mounting bracket (21) is bolted with a reduction motor, and the output end of the reduction motor is bolted with a drive shaft (22), the front side of the drive shaft (22) is bolted with a fixed frame (23), the interior of the fixed frame (23) is rotatably connected to a longitudinal reciprocating screw (24), the surface of the longitudinal reciprocating screw (24) is threadedly sleeved with a connecting block (25), and the other end of the connecting block (25) is bolted with a pressure block (26), the pressure block (26) is in close contact with the side close to the tailwater pipe (5), the interior of the support frame (1) is rotatably connected to a transverse reciprocating screw (27), the rear side of the transverse reciprocating screw (27) extends to the rear side of the support frame (1) and is bolted with a connecting shaft (28), and the fixed bracket (3) is threadedly sleeved on the surface of the transverse reciprocating screw (27).

9. The device for precise coating atomization and spraying for turbine components according to claim 8, characterized in that: The surfaces of the connecting shaft (28) and the driving shaft (22) are both sleeved with transmission wheels (11), and a belt (12) is wound between the insides of the two transmission wheels (11). The front side of the bottom of the tailwater pipe (5) is in rotational contact with a positioning frame (13), and the bottom of the positioning frame (13) is bolted to the support frame (1).

Images