A shot blasting head structure of a shot blasting machine with wear-resistant lining plates

Abstract

The utility model provides a kind of wear-resistant lining plate's throw head structure of shot blasting machine, comprising: backplate, the upper surface of the backplate is fixed with front wall and back wall symmetrically, and throw head assembly is installed between the front wall and the back wall;Side wall, two the side wall is symmetrically hinged on the backplate by hinge, and it is all with the front wall and back wall, two the side wall is symmetrically opened with the stable groove compatible with the front wall and back wall;Top cover, the top cover is set in the just above the backplate, this wear-resistant lining plate's throw head structure of shot blasting machine, two side wall is hinged by hinge, realize quick opening and closing maintenance, and lining plate part is split type design, mutually clamped between each component, limit the cooperation of limiting portion, realize the stable assembly of lining plate part, and can be quickly disassembled, greatly improve the efficiency of maintenance equipment, to improve equipment utilization, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of road safety protection technology, and more specifically, to a shot blasting head structure with a wear-resistant liner. Background Technology

[0002] Shot blasting is a process that uses mechanical tools to propel shot at high speed and at different angles onto a work surface. The shot impacts the work surface, cleaning or strengthening the surface of the casting. Shot blasting machines can also grind, remove cores, and clean castings. Almost all cast steel parts, gray castings, malleable iron parts, and ductile iron parts require shot blasting.

[0003] The existing shot blasting machine head mainly consists of several parts, including the shell, liner, shot distribution wheel, impeller assembly, main shaft assembly, and feed pipe. Routine maintenance often requires replacing worn liner and other parts inside the shot blaster. However, the existing shot blasting head shell has a through-slot fixed structure, which is extremely inconvenient to disassemble and inspect. Furthermore, the liner is usually connected to the shell by a large number of bolts, and part of it is fitted outside the impeller and shot distribution wheel. Replacing the liner requires removing multiple parts such as the impeller and blades, and turning several bolts, which is difficult and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a shot blasting head structure with a wear-resistant liner to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a shot blasting machine head structure with a wear-resistant liner, comprising: a U-shaped base plate, a front panel and a rear panel symmetrically fixed on the upper surface of the U-shaped base plate, and a shot blasting head assembly installed between the front panel and the rear panel; The two side panels are symmetrically hinged to the U-shaped base plate by hinges and abut against the front and rear panels. Each of the two side panels is provided with a stabilizing groove that is adapted to the front and rear panels. The top cover is located directly above the bottom plate, and the lower surface of the top cover is provided with a limiting groove that is adapted to the upper part of the front panel, the rear panel and the two side panels. A liner portion is disposed between the front bulkhead, the rear bulkhead, and the two side bulkheads; A limiting part is provided on the front panel, the rear panel and the two side panels, and engages with the liner part. The limiting part is used to restrict the movement of the liner part between the front panel, the rear panel and the two side panels. A fixing part is provided on the front panel, the rear panel and the top cover, and is used to connect the top cover to the front panel and the rear panel.

[0006] Furthermore, the liner portion includes a first front liner and a first rear liner that are respectively fixed to the front bulkhead and the rear bulkhead by bolts; a second front liner and a second rear liner that are respectively disposed on the first front liner and the first rear liner; a first positioning hole formed on the first front liner and the second front liner; a second positioning hole formed on the first rear liner and the second rear liner; and a plurality of toothed grooves disposed in the first positioning hole and the second positioning hole. The first front liner, the second front liner, the first rear liner, and the second rear liner abut against the two side panels at their respective ends.

[0007] Furthermore, the liner portion also includes two side liner plates corresponding to the two side panels; a plurality of abutment grooves symmetrically opened on both sides of the two side liner plates and adapted to the ends of the first front liner plate, the second front liner plate, the first rear liner plate, and the second rear liner plate; a top liner plate whose lower surface abuts against the upper ends of the second front liner plate and the second rear liner plate; two slots symmetrically opened on the upper surface of the top liner plate; and two locking blocks respectively fixed to the upper ends of the two side liner plates and adapted to the two slots respectively. The upper surface of the top liner plate abuts against the inner wall of the limiting groove; The lower ends of both side lining plates extend below the U-shaped base plate.

[0008] Furthermore, the limiting part includes a first positioning ring and a second positioning ring respectively fixed to the front panel and the rear panel, and both movably sleeved on the outside of the throwing head assembly; and a plurality of toothed blocks symmetrically fixed on the first positioning ring and the second positioning ring. The toothed blocks respectively mesh with the toothed grooves; Both the first positioning ring and the second positioning ring are movably fitted onto the outside of the throwing head assembly.

[0009] Furthermore, the limiting part also includes a plurality of strong magnetic blocks symmetrically fixed on the first front liner, the second front liner, the first rear liner and the second rear liner, and magnetically connected to the front panel and the rear panel respectively; and assembly grooves respectively opened on the two side panels and adapted to the two side liners respectively.

[0010] Furthermore, the fixing part includes a plurality of fixing screws symmetrically hinged to the upper ends of the front panel and the rear panel; a plurality of fixing seats symmetrically fixed to the top cover; mounting grooves respectively opened on the plurality of fixing seats and corresponding to the plurality of fixing screws; and a plurality of fixing nuts respectively threaded to the plurality of fixing screws and abutting against the plurality of fixing seats.

[0011] Furthermore, the blasting head assembly includes a drive motor mounted on the front bulkhead; a drive shaft fixed to the output end of the drive motor and rotatably mounted within the first positioning ring; an impeller fixedly connected to the other end of the drive shaft and disposed between the first front liner and the first rear liner, and between the second front liner and the second rear liner; a shot-distributing wheel fixed within the impeller; and a directional sleeve mounted on the rear bulkhead and disposed between the shot-distributing wheel and the impeller. The directional sleeve is movably positioned within the second positioning ring.

[0012] Compared with the prior art, the embodiments of this utility model have the following beneficial effects: The shot blasting head structure with wear-resistant liner can quickly install the top cover on the upper part of the front and rear panels through the set fixing part, restricting the movement of the two side panels. After the top cover is removed, the two side panels can be rotated to open up the space at the upper part of the front and rear panels, which facilitates quick maintenance of the shot blasting head assembly and replacement of the liner, effectively improving the maintenance efficiency of the shot blasting head. This shot blasting head structure with wear-resistant liners consists of a top liner, a first front liner, a first rear liner, a second front liner, a second rear liner, and two side liners. With the help of a limiting part, it is stably assembled between the front and rear panels and the two side panels. Only the first and second front liners are installed with bolts; the remaining liners interlock and are restrained by the top cover. This allows for quick removal and replacement of the liner section after the top cover is removed. Furthermore, because the first, first, and second front and rear liners are separate structures protecting the front and rear panels, liner replacement and maintenance do not require disassembly of the shot blasting head assembly. This ensures efficient liner replacement; only severely worn parts need to be replaced, effectively reducing maintenance costs. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 A perspective view of the present invention is shown; Figure 2 A perspective view of the present invention in another state is shown; Figure 3 This invention demonstrates a partially disassembled three-dimensional representation. Figure 1 ; Figure 4 This invention demonstrates a partially disassembled three-dimensional representation. Figure 2 ; Figure 5 A partial top perspective view of the present invention is shown; Figure 6 A partial top-view split perspective view of the present invention is shown.

[0015] In the picture 1. U-shaped base plate; 2. Front panel; 3. Rear panel; 4. Throwing head assembly; 5. Side panel; 6. Top cover; 7. Limiting groove; 8. Liner plate; 9. Limiting part; 10. Stabilizing groove; 11. Fixing part; 12. First front liner plate; 13. First rear liner plate; 14. Second front liner plate; 15. Second rear liner plate; 16. First positioning hole; 17. Second positioning hole; 18. Toothed groove; 19. Side liner plate; 20. Support groove; 21. Top liner plate; 22. Slot; 23. Slot; 24. First positioning ring; 25. Second positioning ring; 26. Toothed block; 27. Strong magnetic block; 28. Assembly groove; 29. ​​Fixing screw; 30. Fixing seat; 31. Placement groove; 32. Fixing nut; 33. Drive motor; 34. Drive shaft; 35. Impeller; 36. Shot distribution wheel; 37. Orientation sleeve. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] like Figure 1-6 As shown, a shot blasting machine head structure with wear-resistant lining plate includes: a spiral base plate 1, a front panel 2 and a rear panel 3 symmetrically fixed on the upper surface of the spiral base plate 1, and a shot blasting head assembly 4 installed between the front panel 2 and the rear panel 3. Side panels 5, two side panels 5 are symmetrically hinged to the U-shaped base plate 1 by hinges, and both abut against the front panel 2 and the rear panel 3. The two side panels 5 are symmetrically provided with stabilizing grooves 10 that are adapted to the front panel 2 and the rear panel 3. Top cover 6, the top cover 6 is located directly above the bottom plate 1, and the lower surface of the top cover 6 is provided with a limiting groove 7 that is adapted to the upper ends of the front panel 2, the rear panel 3 and the two side panels 5; Liner section 8, which is disposed between the front bulkhead 2, the rear bulkhead 3 and the two side bulkheads 5; The limiting part 9 is disposed on the front panel 2, the rear panel 3 and the two side panels 5 and engages with the liner part 8. The limiting part 9 is used to restrict the movement of the liner part 8 between the front panel 2, the rear panel 3 and the two side panels 5. A fixing part 11 is provided on the front panel 2, the rear panel 3 and the top cover 6, and is used to connect the top cover 6 with the front panel 2 and the rear panel 3; The projectile head structure uses a U-shaped base plate 1 as a basic support platform. The front panel 2 and the rear panel 3 are welded together to form the main frame. The two side panels 5 are connected by hinges to achieve a wide range of lateral opening and closing angles. The top cover 6 is precisely connected to each panel through the limiting groove 7 and is quickly disassembled and assembled through the fixed part 11 to form a complete sealed cavity, restricting the movement of the upper part of the two side panels 5. When needed, the top cover 6 can be quickly removed and the two side panels 5 can be rotated for inspection and maintenance of the projectile head assembly 4. During operation, the drive motor 33 drives the impeller 35 to rotate at high speed. The projectile is evenly distributed by the shot distribution wheel 36 and the projection angle is adjusted by the directional sleeve 37. The liner 8 bears the impact of the projectile, and the limiting part 9 ensures the stable protection of the liner 8 in the projectile head. When the liner section 8 needs to be replaced or maintained, first remove the top cover 6 through the fixing part 11 to release the upward movement restriction on the top liner 21 and the two locking blocks 23. At this time, the two side guard plates can be lifted and removed, and the restriction of the two locking blocks 23 on the top liner 21 can be released. Then, the top cover 6 plate is removed, and the two side panels 5 are rotated. At this time, several bolts are rotated simultaneously to release the assembly of the first front liner 12 and the first rear liner 13 on the front panel 2 and the rear panel 3. Then, the first front liner 12, the second front liner 14, the first rear liner 13 and the second rear liner 15 can be directly removed from between the front panel 2 and the rear panel 3 to complete the removal of the liner section 8. Finally, replace the new liner 8. First, assemble the first front liner 12 and the second front liner 14 with bolts. Then, align the second front liner 14 and the second rear liner 15 with the first front liner 12 and the second rear liner 14, respectively. Rotate the two side panels 5 to align with the front panel 2 and the rear panel 3. The sides of the front panel 2 and the rear panel 3 are respectively inserted into the stabilizing grooves 10 in the two side panels 5, forming a stable shell frame. Then, place the top liner 21 on the second front liner 14 and the second rear liner 15. Insert the two side liner 19 into the two assembly grooves 28 on the two side panels 5, respectively. The two locking blocks 23 at the upper ends of the two side panels 5 are respectively inserted into the two locking slots 22 on the top liner 21. After completing the assembly of the top cover 6, the liner assembly is complete. The assembly of part 8 within the blasting head is achieved through a limiting part 9 that effectively restricts the movement of the liner part 8 during assembly, ensuring stable assembly. Only the first front liner 12 and the second front liner 14 are bolted together; the remaining liner plates interlock, avoiding the need to rotate multiple bolts for assembly. This ensures efficient removal and replacement of the liner part 8. Furthermore, since the first front liner 12, the first rear liner 13, the second front liner 14, and the second rear liner 15 are separate structures protecting the front and rear panels 2 and 3, liner replacement and maintenance are not required after removing the blasting head assembly 4. This ensures efficient replacement of the liner part 8; only severely worn parts need replacement, effectively reducing maintenance costs.

[0018] Optionally, the liner portion 8 includes a first front liner 12 and a first rear liner 13, which are respectively fixed to the front bulkhead 2 and the rear bulkhead 3 by bolts; a second front liner 14 and a second rear liner 15, which are respectively disposed on the first front liner 12 and the first rear liner 13; a first positioning hole 16 formed on the first front liner 12 and the second front liner 14; a second positioning hole 17 formed on the first rear liner 13 and the second rear liner 15; and a plurality of toothed grooves 18 disposed in the first positioning hole 16 and the second positioning hole 17. The first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15 abut against the two side panels 5 at both ends. The first front liner 12 and the first rear liner 13 are fixed to the side panels with bolts, and the second front liner 14 and the second rear liner 15 engage with the limiting part 9 through the toothed groove 18 to form a double fixation. When the two side panels 5 are rotated to change the assembly space at the upper end of the front panel 2 and the rear panel 3, the first front liner 12 and the second rear liner 15 are assembled separately from the second front liner 14 and the second rear liner 15. The first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15 can be disassembled and replaced without removing the polishing head assembly 4. Furthermore, only the severely worn liner plates can be replaced as needed, effectively improving replacement efficiency and reducing costs.

[0019] Optionally, the liner portion 8 further includes two side liner plates 19 corresponding to the two side panels 5; a plurality of abutment grooves 20 symmetrically opened on both sides of the two side liner plates 19 and adapted to the ends of the first front liner plate 12, the second front liner plate 14, the first rear liner plate 13 and the second rear liner plate 15; a top liner plate 21 whose lower surface abuts against the upper ends of the second front liner plate 14 and the second rear liner plate 15; two slots 22 symmetrically opened on the upper surface of the top liner plate 21; and two locking blocks 23 respectively fixed to the upper ends of the two side liner plates 19 and adapted to the two slots 22 respectively. The upper surface of the top liner 21 abuts against the inner wall of the limiting groove 7; The lower ends of both side lining plates 19 extend below the U-shaped base plate 1; the two side lining plates 19 are fitted with the ends of the first front lining plate 12, the second front lining plate 14, the first rear lining plate 13, and the second rear lining plate 15 through several abutment grooves. During the assembly of the lining plate part 8, the second front lining plate 14 and the second rear lining plate 15 are pressed together by the top lining plate 21. Then, the two side lining plates 19 are respectively inserted into the two assembly grooves 28 on the two side panels 5, so that the ends of the first front lining plate 12, the second front lining plate 14, the first rear lining plate 13, and the second rear lining plate 15 are respectively engaged in the abutment grooves on both sides of the two side panels 5, effectively restricting the axial movement of the first front lining plate 12, the second front lining plate 14, the first rear lining plate 13, and the second rear lining plate 15; while the upper ends of the two side panels 5 The two locking blocks 23 are respectively locked into the two locking slots 22 on the top liner plate 21, thereby effectively restricting the downward movement of the two side panels 5, so that the lower ends of the two side panels 5 extend to the bottom plate 1 to form support. Finally, when the top cover 6 is assembled, the limiting groove 7 in the top cover 6 abuts against the top liner plate 21 and the two locking blocks 23, thereby restricting the upward movement of the top liner plate 21 and the two locking blocks 23, and indirectly restricting the upward movement of the second front liner plate 14, the second rear liner plate 15 and the two side liner plates 19. The multi-directional locking between the various liner plates avoids single-point failure, effectively reducing the displacement of various liner plates under vibration environment when the blasting head is working. Moreover, the top liner plate 21, the second front liner plate 14, the second rear liner plate 15 and the two side liner plates 19 can be quickly and manually disassembled and assembled without special tools, making replacement and maintenance convenient.

[0020] Optionally, the limiting part 9 includes a first positioning ring 24 and a second positioning ring 25 respectively fixed on the front panel 2 and the rear panel 3, and movably sleeved on the outside of the throwing head assembly 4; and a plurality of toothed blocks 26 symmetrically fixed on the first positioning ring 24 and the second positioning ring 25. The toothed blocks 26 respectively mesh with the toothed grooves 18; Both the first positioning ring 24 and the second positioning ring 25 are movably sleeved on the outside of the throwing head assembly 4; When assembling the first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15 on the front bulkhead 2 and the rear bulkhead 3, the inner walls of the first positioning hole 16 and the second positioning hole 17 respectively abut against the first positioning ring 24 and the second positioning ring 25. At this time, the core of the plurality of toothed blocks 26 and the plurality of toothed grooves 18 effectively restricts the circumferential movement of the first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15, ensuring the accuracy of the assembly position during installation and effectively improving the efficiency of disassembly and assembly. Furthermore, with the cooperation of the first positioning ring 24 and the second positioning ring 25, the liner part 8 is effectively restricted from directly contacting the throwing head assembly 4. A small gap is maintained between the first positioning ring 24 and the second positioning ring 25 and the throwing head assembly 4, allowing floating during thermal expansion and avoiding stress concentration.

[0021] Optionally, the limiting part 9 further includes a plurality of strong magnetic blocks 27 symmetrically fixed on the first front liner 12, the second front liner 14, the first rear liner 13 and the second rear liner 15, and magnetically connected to the front bulkhead 2 and the rear bulkhead 3 respectively; and assembly slots 28 respectively opened on the two side bulkheads 5 and adapted to the two side liner 19 respectively. In use, the first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15 can be quickly positioned and attached to the front panel 2 and the rear panel 3 by means of several strong magnetic blocks 27. This assists in the engagement of several toothed grooves 18 and several toothed blocks 26. Thus, when assembling the first front liner 12 and the first rear liner 13 with bolts, it is not necessary for the operator to manually maintain their height. It also effectively restricts the movement of the second front liner 14 and the second rear liner 15, facilitating the subsequent assembly of the two side liners 19. This ensures the assembly efficiency of the first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15. When installing the two side liners 19, the two side liners 19 can be slidably inserted into the two assembly slots 28 respectively to maintain the position of the two side liners 19 and ensure the stability of the contact between the two side liners 19 and the first front liner 12, the second front liner 14, the first rear liner 13, and the second rear liner 15.

[0022] Optionally, the fixing part 11 includes a plurality of fixing screws 29 symmetrically hinged to the upper ends of the front panel 2 and the rear panel 3; a plurality of fixing seats 30 symmetrically fixed to the top cover 6; mounting grooves 31 respectively opened on the plurality of fixing seats 30 and corresponding to the plurality of fixing screws 29; and a plurality of fixing nuts 32 respectively threaded to the plurality of fixing screws 29 and abutting against the plurality of fixing seats 30. Several fixing screws 29 are hinged to the front panel 2 and the rear panel 3. After rotation, they are respectively embedded in the mounting slots 31 of several fixing seats 30. At this time, several fixing nuts 32 are rotated to abut against several fixing seats 30, thereby restricting the movement of the top cover 6 and ensuring the restriction effect of the top cover 6 on the position of the two side panels 5. The hinged design of the fixing screws 29 can prevent loss, and the preload of the fixing nuts 32 is adjustable, which effectively reduces the rotation time of the fixing nuts 32 when the top cover 6 is disassembled and assembled. The opening and closing of the top cover 6 can be completed without auxiliary tools, which is convenient to use.

[0023] Optionally, the blasting head assembly 4 includes a drive motor 33 mounted on the front bulkhead 2; a drive shaft 34 fixed to the output end of the drive motor 33 and rotatably mounted within the first positioning ring 24; an impeller 35 fixedly connected to the other end of the drive shaft 34 and disposed between the first front liner 12 and the first rear liner 13, and between the second front liner 14 and the second rear liner 15; a shot-distributing wheel 36 fixed within the impeller 35; and a directional sleeve 37 mounted on the rear bulkhead 3 and disposed between the shot-distributing wheel 36 and the impeller 35. The directional sleeve 37 is movably disposed within the second positioning ring 25; the shot distribution wheel 36 evenly distributes the shot to the impeller 35, the directional sleeve 37 adjusts the projection angle, and the first positioning ring 24 and the second positioning ring 25 ensure the concentricity of the directional sleeve 37 and the impeller 35. A ceramic coating can be added to the surface of the directional sleeve 37 to ensure the service life of the directional sleeve 37.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shot blasting machine head structure with a wear-resistant liner, characterized in that, include: A spiral base plate (1) is provided, and a front panel (2) and a rear panel (3) are symmetrically fixed on the upper surface of the spiral base plate (1). A throwing head assembly (4) is installed between the front panel (2) and the rear panel (3). Side panels (5), the two side panels (5) are symmetrically hinged to the bottom plate (1) by hinges, and both abut against the front panel (2) and the rear panel (3). The two side panels (5) are symmetrically provided with stabilizing grooves (10) that are adapted to the front panel (2) and the rear panel (3). Top cover (6), the top cover (6) is located directly above the bottom plate (1), and the lower surface of the top cover (6) is provided with a limiting groove (7) that is adapted to the upper ends of the front panel (2), the rear panel (3) and the two side panels (5). Liner section (8), the liner section (8) is disposed between the front panel (2), the rear panel (3) and the two side panels (5); The limiting part (9) is disposed on the front panel (2), the rear panel (3) and the two side panels (5) and engages with the liner part (8). The limiting part (9) is used to restrict the movement of the liner part (8) between the front panel (2), the rear panel (3) and the two side panels (5). The fixing part (11) is provided on the front panel (2), the rear panel (3) and the top cover (6) to complete the connection between the top cover (6) and the front panel (2) and the rear panel (3).

2. The shot blasting head structure with wear-resistant liner as described in claim 1, characterized in that, The liner section (8) includes a first front liner (12) and a first rear liner (13) respectively fixed to the front panel (2) and the rear panel (3) by bolts; a second front liner (14) and a second rear liner (15) respectively disposed on the first front liner (12) and the first rear liner (13); a first positioning hole (16) opened on the first front liner (12) and the second front liner (14); a second positioning hole (17) opened on the first rear liner (13) and the second rear liner (15); and a plurality of toothed grooves (18) disposed in the first positioning hole (16) and the second positioning hole (17). The first front liner (12), the second front liner (14), the first rear liner (13), and the second rear liner (15) abut against the two side panels (5) at both ends.

3. The shot blasting head structure with wear-resistant liner as described in claim 2, characterized in that, The liner section (8) also includes two side liner plates (19) corresponding to the two side panels (5); a plurality of abutment grooves (20) symmetrically opened on both sides of the two side liner plates (19) and adapted to the ends of the first front liner plate (12), the second front liner plate (14), the first rear liner plate (13) and the second rear liner plate (15); a top liner plate (21) whose lower surface abuts against the upper ends of the second front liner plate (14) and the second rear liner plate (15); two slots (22) symmetrically opened on the upper surface of the top liner plate (21); and two locking blocks (23) respectively fixed to the upper ends of the two side liner plates (19) and adapted to the two slots (22). The upper surface of the top liner (21) abuts against the inner wall of the limiting groove (7); The lower ends of both side lining plates (19) extend below the scalloped base plate (1).

4. The shot blasting head structure with wear-resistant liner as described in claim 3, characterized in that, The limiting part (9) includes a first positioning ring (24) and a second positioning ring (25) respectively fixed on the front panel (2) and the rear panel (3), and movably sleeved on the outside of the throwing head assembly (4); and a plurality of toothed blocks (26) symmetrically fixed on the first positioning ring (24) and the second positioning ring (25). A plurality of the toothed blocks (26) respectively mesh with a plurality of the toothed grooves (18); Both the first positioning ring (24) and the second positioning ring (25) are movably fitted onto the outside of the throwing head assembly (4).

5. The shot blasting head structure with wear-resistant liner as described in claim 4, characterized in that, The limiting part (9) also includes a plurality of strong magnetic blocks (27) symmetrically fixed on the first front liner (12), the second front liner (14), the first rear liner (13) and the second rear liner (15), and magnetically connected to the front panel (2) and the rear panel (3) respectively; and assembly slots (28) respectively opened on the two side panels (5) and adapted to the two side liner (19) respectively.

6. The shot blasting head structure with wear-resistant liner as described in claim 3, characterized in that, The fixing part (11) includes a plurality of fixing screws (29) symmetrically hinged to the upper ends of the front panel (2) and the rear panel (3); a plurality of fixing seats (30) symmetrically fixed on the top cover (6); a mounting groove (31) respectively opened on the plurality of fixing seats (30) and corresponding to the plurality of fixing screws (29); and a plurality of fixing nuts (32) respectively threaded to the plurality of fixing screws (29) and abutting against the plurality of fixing seats (30).

7. The shot blasting head structure with wear-resistant liner as described in claim 5, characterized in that, The blasting head assembly (4) includes a drive motor (33) mounted on the front bulkhead (2); a drive shaft (34) fixed to the output end of the drive motor (33) and rotatably mounted in the first positioning ring (24); an impeller (35) fixedly connected to the other end of the drive shaft (34) and disposed between the first front liner (12) and the first rear liner (13), and between the second front liner (14) and the second rear liner (15); a shot distribution wheel (36) fixed in the impeller (35); and a directional sleeve (37) mounted on the rear bulkhead (3) and disposed between the shot distribution wheel (36) and the impeller (35). The directional sleeve (37) is movably disposed within the second positioning ring (25).

Images