A furnace roller shaft head processing grinding device

Abstract

The application relates to the technical field of sand blasting grinding, and discloses a furnace roller shaft head machining and grinding treatment device, which comprises a shell, a worm is rotationally connected to the middle part of the shell, a worm wheel is meshingly connected to the worm, a reciprocating lead screw is fixedly connected to the middle part of the worm wheel, a driving frame is threadedly connected to the middle upper part of the reciprocating lead screw, a guide seat one is fixedly connected to the lower end of the reciprocating lead screw, sliding frames are uniformly distributed at the lower end of the driving frame, rotating seats one are rotationally connected to the interiors of the sliding frames, guide rods one are rotationally connected to the lower end of one side of the rotating seat one close to the reciprocating lead screw, spray heads are rotationally connected to the interiors of the air warehouses, blades are uniformly distributed on the periphery of the spray heads, and three-way joints are communicated with one end of the gun body close to the reciprocating lead screw. Through angle regulation and control, the device can flexibly adapt to special-shaped contours, surface scratches caused by vertical rebound can be avoided, roughness uniformity can be improved, and the precision and consistency of local treatment can be improved.

Description

Technical Field

[0001] This invention relates to the field of sandblasting and grinding technology, and in particular to a grinding device for processing furnace roller shaft heads. Background Technology

[0002] Furnace roller heads are typically cast in one piece from alloy steel or heat-resistant cast steel. After casting, a dense oxide scale and sand layer form on the surface. If this oxide scale is not thoroughly removed, it will directly affect the welding quality between the roller head and the roller body, easily causing defects such as porosity and slag inclusions in the weld zone, severely weakening the weld joint strength. Sandblasting and grinding have become the preferred surface treatment process for furnace roller heads before welding due to their high processing efficiency, lack of alteration of the 44 microstructure of the roller head body, and ability to obtain a clean, activated surface with a certain degree of roughness, which is beneficial for improving weld bonding strength.

[0003] However, existing sandblasting equipment often uses nozzles with fixed angles or only reciprocating oscillations. The spray direction cannot be adaptively adjusted according to the irregular contours of the shaft head, such as protruding edges and grooves, resulting in over-blasting of protruding edges and under-blasting of grooves, leading to poor uniformity. Furthermore, with constant air pressure and sand supply, the same kinetic energy is applied when sweeping over edges and corners, easily causing localized over-grinding and irreversible damage such as chipped corners and missing material. Therefore, there is an urgent need for a device that can adaptively adjust the sandblasting angle and sandblasting volume according to the 44-degree contour of the shaft head body to improve welding quality and finished product consistency. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a furnace roller shaft head grinding treatment device to solve the problems mentioned in the background art.

[0005] To solve the above problems, the present invention adopts the following technical solution: a furnace roller shaft head grinding treatment device, comprising a housing, a worm gear rotatably connected to the middle of the housing, a worm wheel meshing with the worm gear, a reciprocating screw fixedly connected to the middle of the worm wheel, a drive frame threadedly connected to the upper middle of the reciprocating screw, a guide seat fixedly connected to the lower end of the reciprocating screw, sliding frames evenly distributed at the lower end of the drive frame, a rotating seat rotatably connected inside each sliding frame, a guide rod rotatably connected to the lower end of each rotating seat near the reciprocating screw, a gun body fixedly connected to the upper part of the rotating seat away from the reciprocating screw, an air chamber fixedly connected to the end of the gun body away from the reciprocating screw, a nozzle rotatably connected inside each air chamber, blades evenly distributed on the outer periphery of the nozzle, a tee connecting to the end of the gun body near the reciprocating screw, and a straight slit-shaped nozzle formed in the middle of the nozzle.

[0006] Preferably, the upper end of the reciprocating screw is rotatably connected to the middle of the upper end of the housing, the end of the first guide rod near the reciprocating screw is in contact with the outer side of the first guide seat, the end of the nozzle near the reciprocating screw is rotatably connected to the opening at the end of the gun body away from the reciprocating screw, and the upper rear end of the drive frame is fixedly connected to the second guide rod, the rear end of the second guide rod is slidably connected to the left end of the inner rear side of the housing.

[0007] Preferably, a cyclone separator is fixedly connected to the upper left side of the housing, and a branch pipe is connected to the lower right side of the cyclone separator. A sand inlet pipe is fixedly connected to the upper end of the gun body, and the upper end of the sand inlet pipe is connected to the branch pipe. An airflow control pump is fixedly connected to the inner front side of the housing. An air inlet pipe is fixedly connected to the end of the tee away from the gun body, and the upper end of the air inlet pipe is connected to the airflow control pump.

[0008] Preferably, a three-phase motor is fixedly connected to the middle of the rear side of the lower inner end of the housing, and a pulley is fixedly connected to the rear end of the three-phase motor. The pulley is connected to a second pulley and a third pulley via a transmission belt, and the middle of the third pulley is fixedly connected to the rear end of the worm gear.

[0009] Preferably, a sand collecting plate is fixedly connected to the inner center of the housing, a rotating seat two is rotatably connected to the center of the sand collecting plate, a gear ring is fixedly connected to the lower end of the rotating seat two, and a full gear one is meshed with the gear ring. A stepper motor is fixedly connected to the right side of the lower rear end of the inner part of the housing, and the upper drive end of the stepper motor is fixedly connected to the center of the full gear one. Mounting seats are evenly distributed in the center of the rotating seat two, and the lower end of each mounting seat is fixedly connected to the full gear two. A gear seat is fixedly connected to the lower inner part of the housing, and the full gear two meshes with the gear seat.

[0010] Preferably, the lower left end of the cyclone separator is connected to a recovery pipe, the lower end of the recovery pipe is connected to the lower end of the gear seat, and the upper end of the mounting base is provided with a shaft head body.

[0011] Preferably, each of the lower ends of the sliding frame is fixedly connected to an adjusting seat, and each of the two sides of the adjusting seat is fixedly connected to an air inlet. The interior of each air inlet on one side is connected to the lower end of the tee, and the interior of each air inlet on the other side is fixedly connected to a connecting pipe. Each of the adjusting seats is slidably connected to an adjusting plate. Each of the two sides of the middle part of the adjusting plate is provided with an adjusting hole, and a spring is fixedly connected to the upper side of the end of the adjusting plate near the reciprocating lead screw.

[0012] Preferably, the upper end of each adjusting plate is fixedly connected to the lower middle of the guide rod, the end of each spring away from the reciprocating screw is fixedly connected to the lower side of the sliding frame near the reciprocating screw, the upper end of each connecting pipe is connected to the interior of the air chamber, a partition plate is fixedly connected to the inner middle of the housing, the outer side of the reciprocating screw is rotatably connected to the middle of the partition plate, the lower end of each drive frame is fixedly connected to a sandproof cover, the end of each sandproof cover away from the reciprocating screw is slidably connected to an arc-shaped rebound plate, the lower end of each adjusting seat is fixedly connected to the inner bottom wall of the sandproof cover, the upper end of each sliding frame is fixedly connected to the inner upper wall of the sandproof cover, the outer periphery of each guide rod is slidably connected to the opening on the side of the sandproof cover near the reciprocating screw, and the outer side of each air chamber is fixedly connected to the middle of the arc-shaped rebound plate.

[0013] Preferably, a guide seat two is fixedly connected to the left end of the inner rear side of the housing, a rack is slidably connected inside the guide seat two, a drive rod is rotatably connected to the right end of the rack, half gears are meshed with the rack, a swing shaft is fixedly connected to the end of the half gear away from the rack, sandblasting guns are evenly distributed in the middle of the swing shaft, a sand inlet pipe two is connected to the upper end of the sandblasting gun, and an air inlet pipe two is connected to the left end of the sandblasting gun.

[0014] Preferably, the right end of the drive rod is rotatably connected to the rear side of the second pulley, the front end of the second pulley is rotatably connected to the middle of the rear side of the housing, the front and rear ends of the swing shaft are rotatably connected to the middle of the left side of the front and rear ends of the housing, the upper end of the second sand inlet pipe is connected to the branch pipe, and the upper end of the second air inlet pipe is connected to the airflow control pump.

[0015] The beneficial effects of the furnace roller shaft head grinding treatment device provided by the present invention are as follows:

[0016] 1. During the up-and-down movement of the gun body and nozzle driven by the sliding frame, when encountering the convex edge or groove of the shaft head body, the tilt direction of the gun body and nozzle is automatically adjusted, enabling direct sandblasting of the convex edge and groove of the shaft head body. Compared with traditional oscillating sandblasting, it can decompose the impact force into tangential and normal components, significantly reducing the normal direct impact energy, thereby reducing the risk of over-spraying at corners and corner chipping. At the same time, through angle adjustment, it can flexibly adapt to irregular contours, avoid surface scratches caused by vertical rebound, improve roughness uniformity, and enhance the accuracy and consistency of local treatment.

[0017] 2. The evenly distributed blades on the outer circumference of the nozzle cause the nozzle to rotate at the end of the gun body away from the guide seat. This results in a spiral-shaped abrasive spray range when sandblasting the convex or grooved areas of the shaft head body. The faster the nozzle rotates, the less abrasive force the abrasive exerts on the surface of the shaft head body. This significantly reduces impact energy at the corners of the shaft head body through high-speed rotation, effectively preventing over-spraying and corner chipping, and protecting the edge precision. At the grooves, the low-speed rotation of the nozzle reduces the sandblasting range and concentrates the abrasive spray, ensuring that the abrasive penetrates fully. This allows the convex and grooved areas of the shaft head body to be thoroughly ground without damage.

[0018] 3. When air is introduced through the connecting pipe, the airflow entering the gun body through the tee is reduced, the air pressure in the gun body decreases, and the amount of abrasive entering the gun body through the sand inlet pipe is reduced. At the same time, the impact force on the groove or convex edge of the impact shaft head body is also reduced. This achieves synchronous attenuation of airflow and abrasive at the corner, forming a "soft landing" effect. The reduced impact force avoids over-spraying and chipping of edges, and the reduction of abrasive prevents dimensional deviations and excessive roughness. Together with rotary sandblasting, it can accurately remove the weak layer at the corner while reducing the risk of damage to the substrate, significantly improving processing safety and finished product consistency, and achieving adaptive protection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A front perspective perspective view of a furnace roller shaft head grinding treatment device provided in this application;

[0021] Figure 2 A rear perspective perspective view of a furnace roller shaft head grinding treatment device provided in this application;

[0022] Figure 3 A front perspective three-dimensional schematic diagram of the internal structure of the housing of a furnace roller shaft head grinding treatment device provided in this application;

[0023] Figure 4 A rear perspective three-dimensional schematic diagram of the internal structure of a furnace roller shaft head grinding treatment device provided in this application;

[0024] Figure 5 A front-view perspective three-dimensional schematic diagram of the internal spraying assembly of a furnace roller shaft head grinding treatment device provided in this application;

[0025] Figure 6A front perspective perspective view of a nozzle assembly for a furnace roller shaft head grinding treatment device provided in this application;

[0026] Figure 7 A rear perspective perspective view of a nozzle assembly for a furnace roller shaft head grinding treatment device provided in this application;

[0027] Figure 8 An exploded three-dimensional schematic diagram of a nozzle assembly for a furnace roller shaft head grinding treatment device provided in this application;

[0028] Figure 9 This application provides a front sectional three-dimensional schematic diagram of the internal structure of a furnace roller shaft head grinding and processing device.

[0029] Figure 10 This application provides a schematic diagram of the sandblasting principle of a furnace roller shaft head processing and grinding device.

[0030] In the diagram: 1. Housing; 2. Worm; 3. Worm Gear; 4. Reciprocating Screw; 5. Drive Frame; 6. Sliding Frame; 7. Rotary Seat 1; 8. Guide Rod 1; 9. Gun Body; 10. Air Chamber; 11. Nozzle; 12. Blade; 13. T-Connector; 14. Adjusting Seat; 15. Air Inlet; 16. Connecting Pipe; 17. Air Inlet Pipe 1; 18. Sand Inlet Pipe 1; 19. Guide Seat 1; 20. Airflow Control Pump; 21. Air Inlet Pipe 2; 22. Sandblasting Gun; 23. Sand Inlet Pipe 2; 24. Branch Pipe; 25. Cyclone Separator; 26. Recovery Pipe; 27. Sand Collection Plate 28. Rotary seat II; 29. ​​Gear ring; 30. Full gear I; 31. Stepper motor; 32. Mounting base; 33. Full gear II; 34. Three-phase motor; 35. Belt pulley I; 36. Transmission belt; 37. Belt pulley II; 38. Belt pulley III; 39. Drive rod; 40. Rack; 41. Half gear; 42. Guide seat II; 43. Swing shaft; 44. Shaft head body; 45. Adjusting plate; 46. Adjusting hole; 47. Guide rod II; 48. Gear seat; 49. Spring; 50. Middle partition plate; 51. Sandproof cover; 52. Arc-shaped rebound plate. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0032] like Figures 1-10As shown, this embodiment proposes a furnace roller shaft head grinding treatment device, including a housing 1. A guide seat 42 is fixedly connected to the left end of the inner rear side of the housing 1. A rack 40 is slidably connected inside the guide seat 42. A drive rod 39 is rotatably connected to the right end of the rack 40. Half gears 41 are meshed with the rack 40. A swing shaft 43 is fixedly connected to the end of the half gear 41 away from the rack 40. Sandblasting guns 22 are evenly distributed in the middle of the swing shaft 43. A sand inlet pipe 23 is connected to the upper end of each sandblasting gun 22. An air inlet pipe 21 is connected to the left end of each sandblasting gun 22.

[0033] In this embodiment, the right end of the drive rod 39 is rotatably connected to the rear side of the second pulley 37, the front end of the second pulley 37 is rotatably connected to the middle of the rear side of the housing 1, the front and rear ends of the swing shaft 43 are rotatably connected to the middle of the left side of the front and rear ends of the housing 1, the upper end of the second sand inlet pipe 23 is connected to the branch pipe 24, and the upper end of the second air inlet pipe 21 is connected to the airflow control pump 20.

[0034] In this embodiment, a three-phase motor 34 is fixedly connected to the middle of the rear side of the lower inner end of the housing 1. A pulley 35 is fixedly connected to the rear end of the three-phase motor 34. The pulley 35 is connected to a pulley 37 and a pulley 38 via a transmission belt 36. The middle of the pulley 38 is fixedly connected to the rear end of the worm gear 2.

[0035] In this embodiment, a sand collecting plate 27 is fixedly connected to the inner middle of the housing 1. A rotating seat 28 is rotatably connected to the middle of the sand collecting plate 27. A gear ring 29 is fixedly connected to the lower end of the rotating seat 28. A full gear 30 is meshed with the gear ring 29. A stepper motor 31 is fixedly connected to the right side of the lower rear end of the inner part of the housing 1. The upper drive end of the stepper motor 31 is fixedly connected to the middle of the full gear 30. Mounting seats 32 are evenly distributed in the middle of the rotating seat 28. A full gear 33 is fixedly connected to the lower end of each mounting seat 32. A gear seat 48 is fixedly connected to the lower inner middle of the housing 1. All full gears 33 mesh with the gear seat 48.

[0036] In this embodiment, the lower left end of the cyclone separator 25 is connected to a recovery pipe 26, the lower end of the recovery pipe 26 is connected to the lower end of the gear seat 48, and the upper end of the mounting base 32 is provided with a shaft head body 44.

[0037] Specifically, all the compartment doors of housing 1 are opened, and the equipment is inspected. After the inspection, stepper motor 31 is started. Stepper motor 31 drives rotating seat 28 to rotate step by step through full gear 30 and gear ring 29, placing the shaft head body 44 into the mounting base 32. All the compartment doors of housing 1 are closed, and stepper motor 31, three-phase motor 34, cyclone separator 25 and airflow control pump 20 are started. Airflow is sent into the sandblasting gun 22 through air inlet pipe 21. When the airflow is sprayed out through the sandblasting gun 22, a negative pressure is formed inside the sandblasting gun 22. The abrasive in the cyclone separator 25 is drawn into the sandblasting gun 22 through sand inlet pipe 23 and branch pipe 24, and mixed with the gas before being sprayed out. The surface of the shaft head body 44 is sandblasted and ground. When the stepper motor 31 drives the rotating seat 28 to rotate, the rotating seat 28 drives the full gear 33 to revolve around the center of the housing 1 through the mounting seat 32. At the same time, since the full gear 33 meshes with the gear seat 48, the full gear 33 rotates and drives the shaft head body 44 to rotate through the mounting seat 32. Furthermore, the three-phase motor 34 drives the pulley 37 to rotate through the pulley 35 and the transmission belt 36. The pulley 37 drives the rack 40 to reciprocate inside the guide seat 42 through the drive rod 39. The rack 40 drives the swing shaft 43 to reciprocate through the half gear 41. The swing shaft 43 drives all the sandblasting guns 22 to swing back and forth, so that the sides of all the shaft head bodies 44 can be sanded and brushed, and the sides of the shaft head bodies 44 are initially ground.

[0038] In this embodiment, a worm gear 2 is rotatably connected to the middle of the housing 1, a worm wheel 3 is meshed with the worm gear 2, a reciprocating screw 4 is fixedly connected to the middle of the worm wheel 3, a drive frame 5 is threadedly connected to the upper middle part of the reciprocating screw 4, a guide seat 19 is fixedly connected to the lower end of the reciprocating screw 4, sliding frames 6 are evenly distributed at the lower end of the drive frame 5, a rotating seat 7 is rotatably connected inside the sliding frame 6, a guide rod 8 is rotatably connected to the lower end of the rotating seat 7 near the reciprocating screw 4, a gun body 9 is fixedly connected to the upper part of the rotating seat 7 away from the reciprocating screw 4, an air chamber 10 is fixedly connected to the end of the gun body 9 away from the reciprocating screw 4, a nozzle 11 is rotatably connected inside the air chamber 10, blades 12 are evenly distributed on the outer periphery of the nozzle 11, a tee 13 is connected to the end of the gun body 9 near the reciprocating screw 4, and a slit-shaped nozzle is opened in the middle of the nozzle 11.

[0039] In this embodiment, the upper end of the reciprocating screw 4 is rotatably connected to the middle of the upper end of the housing 1. The end of the guide rod 18 near the reciprocating screw 4 is in contact with the outer side of the guide seat 19. The end of the nozzle 11 near the reciprocating screw 4 is rotatably connected to the opening at the end of the gun body 9 away from the reciprocating screw 4. The upper rear end of the drive frame 5 is fixedly connected to the guide rod 2 47. The rear end of the guide rod 2 47 is slidably connected to the left end of the inner rear side of the housing 1.

[0040] In this embodiment, a cyclone separator 25 is fixedly connected to the upper left side of the housing 1, and a branch pipe 24 is connected to the lower right side of the cyclone separator 25. A sand inlet pipe 18 is fixedly connected to the upper end of the gun body 9, and the upper end of the sand inlet pipe 18 is connected to the branch pipe 24. An airflow control pump 20 is fixedly connected to the inner front side of the housing 1. An air inlet pipe 17 is fixedly connected to the end of the tee 13 away from the gun body 9, and the upper end of the air inlet pipe 17 is connected to the airflow control pump 20.

[0041] Specifically, after the initial grinding is completed, the valve connecting the airflow control pump 20 to the air inlet pipe 17 is opened. After passing through the air inlet pipe 17 and the three-way valve 13, part of the airflow enters the interior of the gun body 9, and the other part enters the interior of the adjusting seat 14, forming a negative pressure in the gun body 9. The abrasive is drawn in through the sand inlet pipe 18 and the branch pipe 24 and sprayed out from the straight nozzle of the nozzle 11, sandblasting and grinding the surface of the shaft head body 44 on the inner side of the rotating seat 28. Meanwhile, the pulley 35 drives the pulley 38 to rotate synchronously through the transmission belt 36. The pulley 38 drives the worm wheel 3 to rotate through the worm 2. The worm wheel 3 drives the reciprocating screw 4 to rotate. The drive frame 5 moves up and down reciprocally, sandblasting and grinding the side of the shaft head body 44. During this up-and-down movement, because the spring 49 is connected between the sliding frame 6 and the adjusting plate 45, its elastic force ensures that the end of the guide rod 8 near the guide seat 19 is always in contact with the side of the guide seat 19. Since the side of the guide seat 19 has protrusions and grooves, which cooperate with the spring 49, the guide rod 8 is driven to slide back and forth in the lower inner part of the sliding frame 6, thereby driving the lower end of the rotating seat 7 to slide back and forth in the inner bottom of the sliding frame 6. The upper end of the rotating seat 7 located inside the sliding frame 6 slides on both sides of the arc-shaped sliding frame 6. Inside the groove, when the guide rod 8 pulls the lower end of the rotating seat 7 closer to the guide seat 19, the upper end of the side of the rotating seat 7 located inside the sliding frame 6 slides away from the guide seat 19 within the sliding groove of the sliding frame 6. This causes the end of the rotating seat 7 located outside the sliding frame 6 to move downward, thereby causing the gun body 9 to drive the upper end of the nozzle 11 near the shaft head body 44 to tilt downward, sandblasting the upper groove or upper protruding edge of the shaft head body 44. Conversely, when the guide rod 8 pushes the lower end of the rotating seat 7 away from the guide seat 19, the gun body 9 drives the lower end of the nozzle 11 near the shaft head body 44 to move upward, sandblasting the lower groove of the shaft head body 44. When sandblasting the lower convex edge, the gun body 9 and nozzle 11 move up and down as driven by the sliding frame 6. When encountering the convex edge or groove of the shaft head body 44, the tilt direction of the gun body 9 and nozzle 11 is automatically adjusted, so that the convex edge and groove of the shaft head body 44 can be directly sandblasted. Compared with traditional swing sandblasting, it can decompose the impact force into tangential and normal components, significantly reducing the normal direct impact energy, thereby reducing the risk of over-blasting at corners and corner chipping. At the same time, by adjusting the angle, it can flexibly adapt to irregular contours, avoid surface scratches caused by vertical rebound, improve roughness uniformity, and improve the accuracy and consistency of local treatment.

[0042] In this embodiment, the lower end of the sliding frame 6 is fixedly connected to an adjusting seat 14, and both sides of the adjusting seat 14 are fixedly connected to an air inlet 15. The interior of one side of the air inlet 15 is connected to the lower end of the three-way valve 13, and the interior of the other side of the air inlet 15 is fixedly connected to a connecting pipe 16. The interior of the adjusting seat 14 is slidably connected to an adjusting plate 45. The middle part of the adjusting plate 45 is provided with adjusting holes 46 on both sides. A spring 49 is fixedly connected to the upper side of the end of the adjusting plate 45 near the reciprocating screw 4.

[0043] In this embodiment, the upper end of the adjusting plate 45 is fixedly connected to the lower middle part of the guide rod 8, the end of the spring 49 away from the reciprocating screw 4 is fixedly connected to the lower side of the sliding frame 6 near the reciprocating screw 4, the upper end of the connecting pipe 16 is connected to the interior of the air chamber 10, the middle part of the inner part of the housing 1 is fixedly connected to the partition plate 50, the outside of the reciprocating screw 4 is rotatably connected to the middle part of the partition plate 50, the lower end of the drive frame 5 is fixedly connected to the sand cover 51, the end of the sand cover 51 away from the reciprocating screw 4 is slidably connected to the arc-shaped rebound plate 52, the lower end of the adjusting seat 14 is fixedly connected to the inner bottom wall of the sand cover 51, the upper end of the sliding frame 6 is fixedly connected to the inner upper wall of the sand cover 51, the outer periphery of the guide rod 8 is slidably connected to the opening on the side of the sand cover 51 near the reciprocating screw 4, and the outside of the air chamber 10 is fixedly connected to the middle part of the arc-shaped rebound plate 52.

[0044] It should be noted that the threaded grooves of the reciprocating screw 4, the worm 2, and the worm wheel 3 are all located above the partition plate 50. This prevents the abrasive from entering the upper inner part of the housing 1 and affecting the transmission of the reciprocating screw 4, worm 2, and worm wheel 3. The upper and lower ends of the sliding part between the drive frame 5 and the partition plate 50 are equipped with contact flexible seals at the relative sliding interface between the drive frame 5 and the partition plate 50. The flexible seals are fixed to the partition plate 50, and their sealing lips elastically abut against the sliding surface of the other to form a physical barrier against the abrasive spray throughout the sliding process. The sandblasting assembly is equipped with a sand shield 51, and an arc-shaped rebound plate 52 is slidably connected to the sand shield 51. Blocked by the arc-shaped rebound plate 52, and with the sliding part located at the rear end of the sandblasting range, the relative sliding between the arc-shaped rebound plate 52 and the sand shield 51 only requires routine maintenance.

[0045] Specifically, when the guide rod 8 slides inside the sliding frame 6, it simultaneously drives the adjusting plate 45 to slide inside the adjusting seat 14, causing the overlapping area of ​​the adjusting hole 46 and the air inlet 15 to change. After the airflow enters the adjusting seat 14 through the three-way valve 13, it can enter the interior of the connecting pipe 16 through the adjusting hole 46, and then enter the interior of the air chamber 10. Through the blades 12 evenly distributed around the outer periphery of the nozzle 11, the nozzle 11 rotates at the end of the gun body 9 away from the guide seat 19. Since the initial abrasive spray range of the nozzle 11 when it is not rotating is in a straight line, when the nozzle 11 rotates, the straight abrasive spray range becomes a spiral spray towards the shaft head body 44. For details, refer to [reference needed]. Figure 10 The auger-shaped jetting pattern of the medium-pressure blasting increases the blasting range. Under constant supply pressure and flow rate, the total amount of abrasive ejected from the slit per unit time remains unchanged, but the linear velocity of the jet sweeping across the surface of the shaft head body 44 increases accordingly. This results in an increased coverage area of ​​the annular trajectory formed by the abrasive beam on the surface of the shaft head body 44, and a significant decrease in the frequency and density of abrasive impact per unit area. At the same time, the centrifugal effect generated by the high-speed rotation of the abrasive particles causes the jet to diverge and deflect radially. The actual incident angle of the particles when they reach the surface of the shaft head body 44 tends to be gentler, and the effective normal impact component acting perpendicularly on the surface of the shaft head body 44 is correspondingly reduced. Under the dual effects of area expansion and impact component reduction, the faster the nozzle 11 rotates, the less abrasive force is applied to the surface of the shaft head body 44. This allows for significant reduction of impact energy at the corners of the shaft head body 44 through high-speed rotation when sandblasting the convex or recessed areas, effectively preventing over-blasting and corner chipping, and protecting edge precision. At the recessed areas, the low-speed rotation of the nozzle 11 reduces the sandblasting range, resulting in more concentrated abrasive particles that fully penetrate the surface. This ensures thorough grinding of the convex and recessed areas of the shaft head body 44 without damage. Meanwhile, the airflow control pump 20 outputs a single air valve... It is a constant airflow. When the connecting pipe 16 is ventilated, the airflow entering the gun body 9 through the three-way valve 13 decreases, the air pressure in the gun body 9 drops, and the abrasive entering the gun body 9 through the sand inlet pipe 18 decreases. At the same time, the impact force on the groove or protrusion of the impact shaft head body 44 also decreases. This achieves synchronous attenuation of airflow and abrasive at the corner, forming a "soft landing" effect. The reduced impact force avoids over-spraying and chipping of the edges, and the reduction of abrasive prevents dimensional deviations and excessive roughness. Together with rotary sandblasting, it can accurately remove the weak layer at the corner while reducing the risk of substrate damage, significantly improving processing safety and finished product consistency, and achieving adaptive protection.

[0046] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A grinding and processing device for furnace roller shaft heads, comprising a housing (1), characterized in that, A worm gear (2) is rotatably connected to the middle of the housing (1). The worm gear (2) is meshed with a worm wheel (3). A reciprocating screw (4) is fixedly connected to the middle of the worm wheel (3). A drive frame (5) is threadedly connected to the upper middle part of the reciprocating screw (4). A guide seat (19) is fixedly connected to the lower end of the reciprocating screw (4). Sliding frames (6) are evenly distributed at the lower end of the drive frame (5). A rotating seat (7) is rotatably connected inside each sliding frame (6). The rotating seat (7) is located on the side close to the reciprocating screw (4). The lower end is rotatably connected to a guide rod (8). The upper part of the rotating seat (7) away from the reciprocating screw (4) is fixedly connected to a gun body (9). The end of the gun body (9) away from the reciprocating screw (4) is fixedly connected to an air chamber (10). The inside of the air chamber (10) is rotatably connected to a nozzle (11). The outer periphery of the nozzle (11) is evenly distributed with blades (12). The end of the gun body (9) near the reciprocating screw (4) is connected to a tee (13). A slit-shaped nozzle is opened in the middle of the nozzle (11).

2. The furnace roller shaft head grinding and processing device according to claim 1, characterized in that, The upper end of the reciprocating screw (4) is rotatably connected to the middle of the upper end of the housing (1). The end of the first guide rod (8) near the reciprocating screw (4) is in contact with the outer side of the first guide seat (19). The end of the nozzle (11) near the reciprocating screw (4) is rotatably connected to the opening at the end of the gun body (9) away from the reciprocating screw (4). The upper rear end of the drive frame (5) is fixedly connected to the second guide rod (47). The rear end of the second guide rod (47) is slidably connected to the left end of the inner rear side of the housing (1).

3. The furnace roller shaft head grinding and processing device according to claim 1, characterized in that, A cyclone separator (25) is fixedly connected to the upper left side of the housing (1). A branch pipe (24) is connected to the lower right side of the cyclone separator (25). A sand inlet pipe (18) is fixedly connected to the upper end of the gun body (9). The upper end of the sand inlet pipe (18) is connected to the branch pipe (24). An airflow control pump (20) is fixedly connected to the inner front side of the housing (1). An air inlet pipe (17) is fixedly connected to the end of the tee (13) away from the gun body (9). The upper end of the air inlet pipe (17) is connected to the airflow control pump (20).

4. The furnace roller shaft head grinding and processing device according to claim 3, characterized in that, A three-phase motor (34) is fixedly connected to the middle of the rear side of the lower inner end of the housing (1). A pulley (35) is fixedly connected to the rear end of the three-phase motor (34). The pulley (35) is connected to a pulley (37) and a pulley (38) via a transmission belt (36). The middle part of the pulley (38) is fixedly connected to the rear end of the worm (2).

5. The furnace roller shaft head grinding and processing device according to claim 3, characterized in that, A sand collecting plate (27) is fixedly connected to the middle of the inner part of the housing (1). A rotating seat (28) is rotatably connected to the middle of the sand collecting plate (27). A gear ring (29) is fixedly connected to the lower end of the rotating seat (28). A full gear (30) is meshed with the gear ring (29). A stepper motor (31) is fixedly connected to the right side of the lower rear end of the inner part of the housing (1). The upper drive end of the stepper motor (31) is fixedly connected to the middle of the full gear (30). Mounting seats (32) are evenly distributed in the middle of the rotating seat (28). A full gear (33) is fixedly connected to the lower end of each mounting seat (32). A gear seat (48) is fixedly connected to the lower middle part of the inner part of the housing (1). The full gear (33) meshes with the gear seat (48).

6. The furnace roller shaft head grinding and processing device according to claim 5, characterized in that, The lower left end of the cyclone separator (25) is connected to a recovery pipe (26), the lower end of the recovery pipe (26) is connected to the lower end of the gear seat (48), and the upper end of the mounting base (32) is provided with a shaft head body (44).

7. The furnace roller shaft head grinding and processing device according to claim 1, characterized in that, The lower end of the sliding frame (6) is fixedly connected to an adjusting seat (14). Both sides of the adjusting seat (14) are fixedly connected to air inlets (15). The interior of one side of the air inlet (15) is connected to the lower end of the tee (13). The interior of the other side of the air inlet (15) is fixedly connected to a connecting pipe (16). The interior of the adjusting seat (14) is slidably connected to an adjusting plate (45). The middle part of the adjusting plate (45) is provided with adjusting holes (46) on both sides. The upper side of the adjusting plate (45) near the reciprocating screw (4) is fixedly connected to a spring (49).

8. The furnace roller shaft head grinding and processing device according to claim 7, characterized in that, The upper ends of the adjusting plates (45) are all fixedly connected to the lower middle of the guide rod (8). The ends of the springs (49) away from the reciprocating screw (4) are all fixedly connected to the lower side of the sliding frame (6) near the reciprocating screw (4). The upper ends of the connecting pipes (16) are all connected to the interior of the air chamber (10). A partition plate (50) is fixedly connected to the inner middle of the housing (1). The reciprocating screw (4) is rotatably connected to the middle of the partition plate (50). The lower ends of the drive frame (5) are all fixedly connected to the anti-corrosion device. The sand cover (51) is slidably connected to an arc-shaped rebound plate (52) at the end away from the reciprocating screw (4). The lower end of the adjusting seat (14) is fixedly connected to the inner bottom wall of the sand cover (51). The upper end of the sliding frame (6) is fixedly connected to the inner upper wall of the sand cover (51). The outer periphery of the guide rod (8) is slidably connected to the opening on the side of the sand cover (51) near the reciprocating screw (4). The outer side of the air chamber (10) is fixedly connected to the middle part of the arc-shaped rebound plate (52).

9. The furnace roller shaft head grinding and processing device according to claim 4, characterized in that, A guide seat 2 (42) is fixedly connected to the left end of the inner rear side of the housing (1). A rack (40) is slidably connected inside the guide seat 2 (42). A drive rod (39) is rotatably connected to the right end of the rack (40). Half gears (41) are meshed with the racks (40). A swing shaft (43) is fixedly connected to the end of the half gears (41) away from the racks (40). Sandblasting guns (22) are evenly distributed in the middle of the swing shaft (43). Sandblasting guns (22) are connected to the upper end of the sandblasting guns (22). A sand inlet pipe 2 (23) is connected to the upper end of the sandblasting guns (22). An air inlet pipe 2 (21) is connected to the left end of the sandblasting guns (22).

10. The furnace roller shaft head grinding and processing device according to claim 9, characterized in that, The right end of the drive rod (39) is rotatably connected to the rear side of the pulley two (37), the front end of the pulley two (37) is rotatably connected to the middle of the rear side of the housing (1), the front and rear ends of the swing shaft (43) are rotatably connected to the middle of the left side of the front and rear ends of the housing (1), the upper end of the sand inlet pipe two (23) is connected to the branch pipe (24), and the upper end of the air inlet pipe two (21) is connected to the airflow control pump (20).

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