An anti-abrasion thermal spraying device for water pump and water turbine maintenance

Abstract

The present invention relates to the technical field of thermal spraying powder coating, and specifically discloses an anti-abrasion thermal spraying device for water pump and turbine maintenance, including a device seat, a fixed ring frame is rotatably connected to the upper side of the device seat, a plurality of sliding seats are arranged on the surface of the fixed ring frame, a connecting rod is rotatably connected to the upper side of the outer end of the sliding seat, and a pressure block is rotatably connected to the front end of the connecting rod, and a sliding bar that slides back and forth is arranged inside the sliding seat. The fixed ring frame structure and the sliding seat of the present invention make the assembly process simpler, and impeller blades of different sizes can be quickly fixed by simple rotation to ensure secure fixation. The water cleaning and drying preheating system effectively purifies and pretreats the surface of the impeller or blades to ensure the adhesion and quality of the coating, while reducing the risk of thermal stress. The quick adjustment mechanism can accurately adjust the position and angle of the spray head to optimize the spraying parameters and improve the uniformity and quality of the coating.

Description

Technical Field

[0001] The invention relates to the technical field of thermal spraying powder coating, in particular to an anti-abrasion thermal spraying device for water pump and water turbine maintenance. Background Art

[0002] Water pumps are mainly used to transport water or liquids, while water turbines are devices that convert the kinetic energy of water into mechanical energy or electrical energy. In some hydraulic systems, water pumps are often used to help improve turbine efficiency or perform hydraulic control. As hydraulic equipment, water pumps and water turbines usually contain particulate matter in their daily operating environment, such as sand, soil or other solid particles. These particles can cause wear on metal surfaces, and water pumps often work in environments containing corrosive media, such as salt water, chemical solutions, etc. Impellers may also face high-temperature and high-pressure corrosive gases. When impellers and water pumps operate at high speed, the blades and impellers will face high-temperature and high-speed airflow impacts, which will aggravate surface wear and thermal stress. The above factors will cause greater wear on the surface of the pump impeller and impeller blades.

[0003] Therefore, daily maintenance of the surface of water pumps and turbines is particularly necessary to ensure their long-term efficient operation and reduce losses. Thermal spraying powder coating is an efficient surface treatment coating technology that combines the characteristics of thermal spraying and powder coating. It is used to improve the wear resistance, corrosion resistance and mechanical properties of the workpiece surface. Thermal spray coating can make the surface of water pumps and impellers smoother and stronger, reduce friction losses and improve energy efficiency.

[0004] However, due to the shape and specifications of the impeller and blades, there are some problems when performing thermal spray repair, such as:

[0005] Since the impeller and blades have complex shapes, in order to ensure that a uniform and high-quality coating is formed on the impeller and blade surfaces, the control requirements for nozzle distance, nozzle angle, etc. are higher during the thermal spraying process;

[0006] Since impellers and blades vary in size and specifications, their stable fixation before spraying is particularly important when thermal spraying and powder coating is performed on them. However, the current adjustment procedures for such fixed structures are complicated.

[0007] The impeller blade surface contains oil, oxides or other pollutants, which will affect the adhesion and quality of the coating. After thermal spraying, the coating material will cool quickly, resulting in increased thermal stress between the coating and the substrate, cracks inside the coating or at the interface between the coating and the substrate, and thus affecting the adhesion and durability of the coating. The current device lacks solutions and subsequent processing structures for these problems. Therefore, the present invention proposes an anti-abrasion thermal spraying device for water pump and turbine maintenance to solve the problems mentioned in the above background technology. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an anti-abrasion thermal spraying device for water pump and water turbine maintenance.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] An anti-abrasion thermal spraying device for water pump and turbine maintenance, comprising a device seat, a fixed ring frame is rotatably connected to the upper side of the device seat, a plurality of sliding seats are arranged on the surface of the fixed ring frame, a connecting rod is rotatably connected to the upper side of the outer end of the sliding seat, and a pressure block is rotatably connected to the front end of the connecting rod, and a sliding bar rod that slides back and forth is arranged inside the sliding seat;

[0011] The center of the fixed ring frame is rotatably connected to an intermediate shaft, and the upper and lower sides of the intermediate shaft are rotatably connected to surface ratchet discs, and the upper and lower sides of the intermediate shaft are provided with a plurality of inclined blocks corresponding to the surface ratchet discs, and the upper center of the fixed ring frame is rotatably connected to a plurality of slotted rods corresponding to the sliding seat, and the outer side of the slotted rod is provided with a threaded sleeve, and the threaded sleeve is threadedly connected to the outer corresponding sliding bar rod;

[0012] A water spray head, an air hood and a spray head are arranged on the outer circumference of the device seat, a swivel seat is rotatably connected to the outer side of the device seat, a sliding seat that slides back and forth is arranged on the upper side of the swivel seat, a support rod 1 is rotatably connected to the front end of the sliding seat, a support rod 2 is arranged between the support rod 1 and the sliding seat, and the spray head is installed on the upper end of the support rod 1, the water spray head is installed on the device seat, the water spray head is connected to a water pipe, and the water pipe is connected to a water pump.

[0013] Preferably, the water spray heads, wind hoods and spray heads are arranged in a circular array on the periphery of the device seat, the wind hood is installed on the device seat, and an air chamber corresponding to the wind hood is installed on the outside of the device seat, an air pipe is connected between the air chamber and the wind hood, and an electric heating element is installed inside the wind hood.

[0014] Preferably, a fan blade is installed in the air chamber, an air pump is connected to the inlet of the air chamber, a spur gear is fixed on the upper side of the fan blade, and an external gear ring meshing with the spur gear is fixed outside the fixed ring frame.

[0015] Preferably, the fixed ring frame is provided with a plurality of sliding brackets corresponding to the sliding seats, the sliding seats slide on the fixed ring frame through the sliding brackets, and a sliding groove corresponding to the sliding bar rod is opened inside the sliding bracket, a spur gear 2 is fixed at the rotation point of the lower end of the connecting rod, and a gear block meshing with the upper spur gear 2 is fixed on the upper side of the outer end of the sliding bar rod.

[0016] Preferably, the slot rod is provided with limiting grooves on the upper and lower sides, the threaded sleeve slides on the outside of the slot rod through the limiting groove, a spur gear is fixed to the inner end of the slot rod, and an end face gear meshing with a plurality of spur gears is fixed to the surface of the upper ratchet plate.

[0017] Preferably, a rotating rack is fixed to the lower side of the lower ratchet disc, a plurality of sliding shafts corresponding to the sliding seat are fixed to the outer end of the rotating rack, and a plurality of inclined grooves corresponding to the sliding shafts are provided on the lower side of the sliding seat.

[0018] Preferably, the teeth of the upper and lower ratchet plates are opposite to each other, and the corresponding directions of the inclined blocks are opposite to each other. The inclined blocks are rotatably connected to the intermediate shaft, and a torsion spring is provided at the junction of the inclined blocks and the intermediate shaft.

[0019] Preferably, a rotating column is fixed on the lower side of the intermediate shaft, an external thread is opened on the upper end of the rotating column, and a corresponding locking screw sleeve is sleeved on the upper end of the rotating column, and the locking screw sleeve is attached to the lower side of the device seat.

[0020] Preferably, the upper end of the second support rod is rotatably connected to the first support rod, and the lower end of the second support rod is rotatably connected to a slider, the slider slides back and forth inside the slide seat, and a stud is fixed on the slider, and a nut is threadedly connected to the stud that is close to the surface of the slide seat.

[0021] Preferably, an insert block corresponding to the rotating seat is arranged on the outer side of the device seat, and the insert block slides up and down on the device seat. An insert disk corresponding to the insert block is fixed on the outer side of the rotating seat, and a plurality of positioning slots corresponding to the insert block are opened around the insert disk, and a return spring is arranged between the lower side of the insert block and the device seat.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention designs a fixed ring frame structure that rotates on the device seat, and a plurality of sliding seats are arranged on the fixed ring frame. When the intermediate shaft structure rotates in one direction, the surrounding sliding seats move closer to the middle to achieve the initial fixation of the central impeller blades. Then the intermediate shaft is rotated in the other direction to press the upper pressure block of the connecting rod downward to complete the upper and lower fixation of the impeller blades. This structure can realize the rapid fixation, assembly and fixation of impeller blades of different sizes, and the operation is simple;

[0024] 2. The present invention is provided with a water cleaning structure, which can clean and degrease the surface of the workpiece before thermal spraying powder coating, ensure the surface cleanliness, ensure the quality of the coating after spraying and the adhesion of the coating on the surface of the substrate. In addition, a drying and preheating structure is provided, and hot air is used to quickly dry and preheat the surface of the impeller or blade, which helps to reduce the temperature gradient between the coating and the substrate and reduce the occurrence of thermal stress. After the powder coating is carried out and completed, continuous hot air blowing can avoid rapid cooling of the impeller or blade spray surface;

[0025] 3. The present invention is also provided with a quick adjustment mechanism adapted to the thermal spray head, which can realize quick adjustment of the height, angle and front and rear position of the spray head, so that it can adapt to impeller blades of different shapes and sizes, ensure the precise control and optimization of parameters such as nozzle distance and nozzle angle, so as to improve the uniformity and quality of the coating. At the same time, the air pumped into the air chamber links the fixed ring frame in the device frame to make it rotate at a uniform speed to cooperate with the cleaning, drying and spraying work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure of the anti-abrasion thermal spraying device for water pump and water turbine maintenance proposed by the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The structure of the anti-abrasion thermal spraying device for water pump and water turbine maintenance proposed by the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 The structure of the anti-abrasion thermal spraying device for water pump and water turbine maintenance proposed by the present invention is shown in FIG. Figure 3 ;

[0029] Figure 4 A schematic diagram of a top cross-sectional structure of an anti-abrasion thermal spraying device for water pump and water turbine maintenance proposed by the present invention;

[0030] Figure 5 The structure of the anti-abrasion thermal spraying device for water pump and water turbine maintenance proposed by the present invention is shown in FIG. Figure 4 ;

[0031] Figure 6 It is a partially enlarged structural schematic diagram of an anti-abrasion thermal spraying device for water pump and water turbine maintenance proposed by the present invention;

[0032] Figure 7 The present invention is a schematic diagram of the connection structure of a sliding seat in an anti-abrasion thermal spraying device for water pump and water turbine maintenance.

[0033] In the figure: 1, device seat; 2, fixed ring frame; 3, spray head; 4, wind hood; 5, water spray head; 6, water pipe; 7, spur gear; 8, air chamber; 9, fan blade; 10, air pipe; 11, sliding seat; 12, connecting rod; 13, pressure block; 14, spur gear one; 15, groove rod; 16, threaded sleeve; 17, slide bar rod; 18, tooth block; 19, spur gear two; 20, swivel seat; 21, slide seat; 22, support rod one; 23, support rod two; 24, slider; 25, stud; 26, end gear; 27, rotating column; 28, locking screw sleeve; 29, inclined groove; 30, rotating frame; 31, intermediate shaft; 32, face ratchet plate; 33, inclined block; 34, sliding shaft. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-7 , an anti-abrasion thermal spraying device for water pump and water turbine maintenance, comprising a device seat 1, a fixed ring frame 2 is rotatably connected to the upper side of the device seat 1, a plurality of sliding seats 11 are arranged on the surface of the fixed ring frame 2, a connecting rod 12 is rotatably connected to the upper side of the outer end of the sliding seat 11, and a pressing block 13 is rotatably connected to the front end of the connecting rod 12, a sliding bar 17 that slides back and forth is arranged inside the sliding seat 11, and a plurality of sliding brackets corresponding to the sliding seat 11 are arranged on the fixed ring frame 2, and the sliding seat 11 slides on the fixed ring frame 2 inside and outside through the sliding bracket, and a sliding groove corresponding to the sliding bar 17 is opened inside the sliding bracket. First, the impeller blades and water pump impellers that need to be sprayed with anti-abrasion repair are removed, and placed in the middle of the upper side of the fixed ring frame 2 of the device seat 1, and the plurality of sliding seats 11 on the sliding bracket are brought close to the center to clamp and fix them around, and then the central blades and impellers are pressed and fixed by the pressing block 13 on the connecting rod 12;

[0036] Furthermore, referring to Figure 3 , 5 6. The center of the fixed ring frame 2 is rotatably connected to an intermediate shaft 31. The upper and lower sides of the intermediate shaft 31 are rotatably connected to a surface ratchet disk 32. The upper and lower sides of the intermediate shaft 31 are provided with a plurality of inclined blocks 33 corresponding to the surface ratchet disk 32. The teeth of the upper and lower ratchet disks 32 are opposite, and the corresponding inclined blocks 33 are in opposite directions. The inclined blocks 33 are rotatably connected to the intermediate shaft 31, and a torsion spring is provided at the junction of the inclined blocks 33 and the intermediate shaft 31. A rotating frame 30 is fixed to the lower side of the lower side ratchet disk 32. The outer end of the rotating frame 30 is fixed to a plurality of sliding shafts 34 corresponding to the sliding seat 11, and the lower side of the sliding seat 11 is provided with a plurality of inclined grooves 29 corresponding to the sliding shafts 34. A rotating column 27 is fixed to the lower side of the intermediate shaft 31. 27 rotates the middle shaft 31 in the fixed ring frame 2. Due to the arrangement of the upper and lower ratchet discs 32 and the corresponding inclined blocks 33, when the middle shaft 31 rotates in one direction, the upper or lower inclined blocks 33 act on the corresponding ratchet disc 32, while the inclined blocks 33 on the other side rotate obliquely past the ratchet disc 32 and do not act on the corresponding ratchet disc 32. Therefore, the middle shaft 31 is controlled to drive the lower ratchet disc 32 to rotate, and drive the rotating frame 30 connected to the lower side to rotate. The sliding shaft 34 at the outer end of the rotating frame 30 corresponds to the inclined groove 29, which prompts the sliding seat 11 on the sliding bracket of the fixed ring frame 2 to move toward the inner center until the surrounding sliding seats 11 clamp the middle impeller or blades, that is, stop rotating;

[0037] Furthermore, referring to Figure 3 , 4, 6, 7, the upper center of the fixed ring frame 2 is rotatably connected with a plurality of grooved rods 15 corresponding to the sliding seat 11, the outer side of the grooved rod 15 is sleeved with a threaded sleeve 16, and the threaded sleeve 16 is threadedly connected with the corresponding external sliding bar 17, the upper and lower sides of the grooved rod 15 are provided with limiting grooves, and the threaded sleeve 16 slides on the outer side of the grooved rod 15 through the limiting groove sleeve, the inner end of the grooved rod 15 is fixed with a spur gear 14, and the surface of the upper side ratchet plate 32 is fixed with an end gear 26 meshing with a plurality of spur gears 14, the lower end of the connecting rod 12 is fixed with a spur gear 2 19, and the upper side of the outer end of the sliding bar 17 is fixed with a tooth block 18 meshing with the upper side spur gear 2 19, after the above-mentioned plurality of sliding seats 11 clamp the impeller or blade around, the intermediate shaft When the upper side ratchet plate 32 rotates in the other direction, the intermediate shaft 31 drives the upper side ratchet plate 32 to rotate, and the upper side ratchet plate 32 drives the connected end face gear 26 to rotate, thereby linking the plurality of spur gears 14 thereon, and the spur gears 14 drive the outer fixed groove rod 15 to rotate. When the above-mentioned sliding seat 11 slides toward the center, the outer threaded sleeve 16 of the groove rod 15 slides toward the inner end of the groove rod 15. When the groove rod 15 rotates, it drives the outer threaded sleeve 16 to rotate, and the threaded sleeve 16 rotates, so that the position of the slide bar 17 in the sliding seat 11 changes. The slide bar 17 passes through the upper tooth block 18, and links the connecting rod 12 to rotate downward, and then presses the impeller or blade through the upper end pressure block 13. The pressure block 13 can adjust the angle to facilitate its close contact with the impeller and the surface of the blade;

[0038] Furthermore, referring to Figure 5 , an external thread is provided on the upper end of the rotating column 27, and a corresponding locking screw sleeve 28 is sleeved on the upper end of the rotating column 27, and the locking screw sleeve 28 is attached to the lower side of the device seat 1. After completing the fixing work of the impeller or blade that needs to be sprayed and repaired, the locking screw sleeve 28 on the rotating column 27 is rotated to make it close to the lower side of the fixed ring frame 2, and then fixed to the rotation angle of the intermediate shaft 31, and then fixed to the position of the sliding seat 11, and the downward pressing position of the pressure block 13;

[0039] Furthermore, referring to Figure 2 , 3The outer peripheral side of the device seat 1 is provided with a water spray head 5, a wind shield 4 and a spray head 3. The outer side of the device seat 1 is rotatably connected with a rotating seat 20. The upper side of the rotating seat 20 is provided with a sliding seat 21 that slides forward and backward. The front end of the sliding seat 21 is rotatably connected with a support rod 1 22. A support rod 23 is provided between the support rod 1 22 and the sliding seat 21. The spray head 3 is installed on the upper end of the support rod 1 22. The water spray head 5, the wind shield 4 and the spray head 3 are arranged in a circular array on the outer periphery of the device seat 1. The upper end of the support rod 23 is rotatably connected with the support rod 1 22, and the support rod 23 is rotatably connected with the support rod 1 22. The lower end of the slide 24 is rotatably connected to the slide 24, and the slide 24 slides back and forth inside the slide 21, and a stud 25 is fixed on the slide 24, and a nut that is closely attached to the surface of the slide 21 is threadedly connected to the stud 25. According to the size and position of the impeller or the blade, the position of the spray head 3 is reasonably adjusted, and the angle of the support rod 23 is adjusted by sliding the position of the slide 24 in the slide 21, thereby adjusting the angle of the support rod 1 22, and the position of the slide 24 in the slide 21 is locked by tightening the nut on the stud 25, and the outer side of the device seat 1 The side is provided with an insert block corresponding to the rotating seat 20, and the insert block slides up and down on the device seat 1. An insert plate corresponding to the insert block is fixed on the outer side of the rotating seat 20. A plurality of positioning slots corresponding to the insert block are opened on the peripheral side of the insert plate, and a reset spring is arranged between the lower side of the insert block and the device seat 1. The insert block is pushed downward, and the angle of the rotating seat 20 is rotated. After the angle is determined, the spring supports the insert block such as the corresponding slot of the insert plate, fixes the slide seat 21 and the angle of the spray head 3 thereon, and the front and rear positions of the spray head 3 are adjusted by sliding the slide seat 21 on the rotating seat 20. The angles of the rod 1 22 and the support rod 2 23 are adjusted to adjust the height of the spray head 3, ensuring the precise control and optimization of parameters such as the nozzle distance and the nozzle angle, so as to improve the uniformity and quality of the coating. The spray head 3 is connected to a powder supply system to ensure that the spray head 3 can spray materials continuously and stably. This application only installs the thermal spray nozzle part on the central spray device, and the rest such as the powder supply system, the gas supply system, the control system and the electrical interface are well-known technologies in the art, so they are not elaborated in detail.

[0040] Furthermore, referring to Figure 1-3 The water spray head 5 is installed on the device seat 1, and the water spray head 5 is connected to a water pipe 6, and the water pipe 6 is connected to a water pump. After the impeller and the blade device are fixed, before the thermal spraying work is carried out, water is connected to the water spray head 5 through the water pipe 6 to wash the surface of the impeller or the blade to remove oil, oxides and other pollutants, ensure the surface cleanliness, and ensure the quality of the coating after spraying and the adhesion of the coating on the surface of the substrate;

[0041] Furthermore, referring to Figure 3 , 4The hood 4 is installed on the device seat 1, and an air chamber 8 corresponding to the hood 4 is installed on the outside of the device seat 1, an air pipe 10 is connected between the air chamber 8 and the hood 4, and an electric heating element is installed inside the hood 4, a fan blade 9 is installed in the air chamber 8, and an air pump is connected to the inlet of the air chamber 8. A spur gear 7 is fixed on the upper side of the fan blade 9, and an external gear ring meshing with the spur gear 7 is fixed on the outside of the fixed ring frame 2. Before and after thermal spraying powder coating, air is pumped into the air chamber 8 through the air pump, and the air at the air outlet of the hood 4 is heated by the electric heating element. During cleaning, the hot air quickly dries and preheats the impeller or blade surface, which helps to reduce the temperature gradient between the coating and the substrate and reduce the occurrence of thermal stress. After the powder coating is carried out and after it is completed, continuous hot air blowing Movement can avoid rapid cooling of the sprayed surface of the impeller or blade. After powder coating, if the cooling is too fast, the thermal stress inside the coating or at the interface between the coating and the substrate will increase, thereby causing the risk of cracks or coating peeling. Appropriate hot air blowing can ensure that the temperature of the coating on the surface of the impeller or blade drops slowly, and the curing temperature and time are controlled so that the coating can be evenly cured, reducing the accumulation of internal stress. When the above-mentioned pumped air passes through the air chamber 8, the internal fan blades 9 are driven to rotate, and the rotating fan blades 9 simultaneously drive the upper spur gears 7 to rotate, and the spur gears 7 drive the fixed ring frame 2 in the device seat 1 to rotate. As long as the constant air volume is maintained, the fixed ring frame 2 in the device seat 1 will rotate at a uniform speed, thereby cooperating with the uniform cleaning, drying and powder coating of the impeller or blades.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-abrasion thermal spraying device for water pump and water turbine maintenance, comprising a device seat (1), characterized in that: The upper side of the device seat (1) is rotatably connected to a fixed ring frame (2), a plurality of sliding seats (11) are arranged on the surface of the fixed ring frame (2), the upper side of the outer end of the sliding seat (11) is rotatably connected to a connecting rod (12), and the front end of the connecting rod (12) is rotatably connected to a pressure block (13), and a sliding bar (17) that slides back and forth is arranged inside the sliding seat (11); The center of the fixed ring frame (2) is rotatably connected to an intermediate shaft (31), and the upper and lower sides of the intermediate shaft (31) are rotatably connected to a ratchet plate (32). The upper and lower sides of the intermediate shaft (31) are provided with a plurality of inclined blocks (33) corresponding to the ratchet plate (32). The center of the upper side of the fixed ring frame (2) is rotatably connected to a plurality of slotted rods (15) corresponding to the sliding seat (11), and the outer side of the slotted rod (15) is provided with a threaded sleeve (16), and the threaded sleeve (16) is threadedly connected to the outer corresponding sliding rod (17); A water spray head (5), a wind hood (4) and a spray head (3) are arranged on the outer peripheral side of the device seat (1); the outer side of the device seat (1) is rotatably connected to a rotating seat (20); a sliding seat (21) that slides forward and backward is arranged on the upper side of the rotating seat (20); a front end of the sliding seat (21) is rotatably connected to a support rod 1 (22); a support rod 2 (23) is arranged between the support rod 1 (22) and the sliding seat (21); the spray head (3) is installed on the upper end of the support rod 1 (22); the water spray head (5) is installed on the device seat (1); the water spray head (5) is connected to a water pipe (6); and the water pipe (6) is connected to a water pump; The teeth of the upper and lower surface ratchet discs (32) are opposite, and the corresponding inclined blocks (33) are in opposite directions. A rotating frame (30) is fixed on the lower side of the lower surface ratchet disc (32), and a plurality of sliding shafts (34) corresponding to the sliding seat (11) are fixed on the outer end of the rotating frame (30). A spur gear (14) is fixed on the inner end of the groove rod (15), and an end face gear (26) meshing with the plurality of spur gears (14) is fixed on the surface of the upper surface ratchet disc (32).

2. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: The water spray heads (5), the wind hood (4) and the spray heads (3) are arranged in a circular array on the periphery of the device seat (1); the wind hood (4) is mounted on the device seat (1); an air chamber (8) corresponding to the wind hood (4) is mounted on the outside of the device seat (1); an air pipe (10) is connected between the air chamber (8) and the wind hood (4); and an electric heating element is mounted inside the wind hood (4).

3. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 2, characterized in that: A fan blade (9) is installed in the air chamber (8), an inlet of the air chamber (8) is connected to an air pump, a spur gear (7) is fixed on the upper side of the fan blade (9), and an external gear ring meshing with the spur gear (7) is fixed on the outside of the fixed ring frame (2).

4. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: The fixed ring frame (2) is provided with a plurality of sliding brackets corresponding to the sliding seats (11), the sliding seats (11) slide on the fixed ring frame (2) through the sliding brackets, and a sliding groove corresponding to the sliding bar (17) is opened inside the sliding bracket, a spur gear (19) is fixed at the rotation position of the lower end of the connecting rod (12), and a tooth block (18) meshing with the upper spur gear (19) is fixed on the upper side of the outer end of the sliding bar (17).

5. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: The slot rod (15) is provided with limiting grooves on the upper and lower sides thereof, and the threaded sleeve (16) is sleeved through the limiting grooves and slides on the outside of the slot rod (15).

6. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: A plurality of inclined grooves (29) corresponding to the sliding shafts (34) are formed on the lower side of the sliding seat (11).

7. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: The inclined block (33) is rotatably connected to the intermediate shaft (31), and a torsion spring is provided at the junction between the inclined block (33) and the intermediate shaft (31).

8. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: A rotating column (27) is fixed to the lower side of the intermediate shaft (31), an upper end of the rotating column (27) is provided with an external thread, and a corresponding locking screw sleeve (28) is sleeved on the upper end of the rotating column (27), and the locking screw sleeve (28) is attached to the lower side of the device seat (1).

9. The anti-abrasion thermal spraying device for water pump and water turbine maintenance according to claim 1, characterized in that: The upper end of the second support rod (23) is rotatably connected to the first support rod (22), and the lower end of the second support rod (23) is rotatably connected to a slider (24). The slider (24) slides forward and backward inside the slide seat (21), and a stud (25) is fixed on the slider (24). A nut that is closely attached to the surface of the slide seat (21) is threadedly connected to the stud (25).

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