A screening device for high-chromium steel ball production

Abstract

The utility model discloses a screening device for high chromium steel ball production relates to high chromium steel ball production relevant field, for solving the problem of the existing technology in each time dumping steel ball screening's quantity can not be too much, otherwise can not normally screen, and there is the problem of low screening efficiency, and the screening precision is not high. Two first screening cavities are formed to the inside of intermediate screening barrel through the separation of bidirectional spiral plate, the trumpet shape fixed part is fixed between intermediate screening barrel and outer screening barrel body, and the outer spiral plate is fixed between trumpet shape fixed part and outer screening barrel body. Form the material body flow cavity between intermediate screening barrel and trumpet shape fixed part, form the screening stay cavity between intermediate screening barrel and outer screening barrel along the trumpet shape fixed part expansion part outside, form the second screening cavity between trumpet shape fixed part, outer screening barrel and outer spiral plate, and steel ball passes through first screening cavity, material body flow cavity, screening stay cavity and second screening cavity in turn.

Description

Technical Field

[0001] This utility model relates to the field of high-chromium steel ball production, specifically a screening device for high-chromium steel ball production. Background Technology

[0002] High-chromium steel balls, as an important wear-resistant material, play a crucial role in numerous industrial sectors. In the mining industry, ball mills grind ores and other materials to a suitable particle size, ensuring smooth operation of subsequent mineral processing and other procedures. In cement production, high-chromium steel balls grind cement clinker, gypsum, and other raw materials to achieve the specified fineness, ensuring the quality and performance of cement products. In thermal power generation, building materials, and chemical industries, high-chromium steel balls are also widely used in various grinding equipment for grinding different materials.

[0003] The production of high-chromium steel balls typically involves multiple stages, including raw material preparation, smelting, casting, heat treatment, and subsequent processing. In the raw material preparation stage, various alloying elements need to be precisely proportioned. During smelting, the raw materials are melted into molten steel at high temperatures and then refined as necessary. In the casting stage, the molten steel is poured into a mold and cooled to solidify, forming a steel ball blank. Heat treatment involves heating, holding, and cooling to adjust the internal structure of the steel ball and improve its mechanical properties, such as hardness, toughness, and wear resistance.

[0004] In the production of high-chromium steel balls, the screening process is a crucial step in ensuring product quality. Steel balls with excessive dimensional deviations may lead to an unreasonable filling rate in the ball mill, affecting grinding efficiency. Screening the produced steel balls, removing unqualified products, and retaining only those that meet quality standards for subsequent packaging and sales can effectively improve the overall product quality. For example, the Chinese authorized patent (a batch steel ball screening device) with publication number CN 210965802U includes a first fixed plate, a second fixed plate, and a belt. A baffle is fixedly connected to the right side of the first and second fixed plates on opposite sides. A rotating rod is inserted through the right side of the baffle, with its left end penetrating the baffle and extending to the outside of the baffle. A first belt pulley is fixedly connected to the right end of the rotating rod. A support plate is fixedly connected to the right side of the front of the first fixed plate, and a motor is fixedly connected to the right side of the support plate. A second belt pulley is fixedly connected to the right end of the motor shaft. The first and second belt pulleys are connected by belt drive.

[0005] Although the existing technology has the function of screening by size, when there are a large number of steel balls, the smaller steel balls pile up on top of the larger steel balls and move downwards, which cannot complete the screening normally. Although it can screen continuously, the amount of steel balls to be screened each time cannot be too large, otherwise it cannot screen normally. It has problems such as low screening efficiency and low screening accuracy, which makes it difficult to meet the needs of large-scale production. Utility Model Content

[0006] The purpose of this invention is to provide a screening device for the production of high-chromium steel balls, in order to solve the problems mentioned in the background art, which state that the amount of steel balls to be screened each time cannot be too large, otherwise normal screening is not possible, resulting in low screening efficiency and low screening accuracy.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a screening device for producing high-chromium steel balls, comprising a steel ball screening barrel, the steel ball screening barrel being inclined, the steel ball screening barrel being composed of an intermediate screening barrel body and an outer screening barrel body, the outer screening barrel body being fixed to the outside of the intermediate screening barrel body; a bidirectional spiral plate is fixed inside the intermediate screening barrel body, the intermediate screening barrel body being divided into two first screening chambers by the bidirectional spiral plate, and a plurality of first screening holes are arrayed on the intermediate screening barrel body; a plurality of second screening holes are arrayed on the outer screening barrel body; the intermediate screening barrel body and the outer screening barrel body... A horn-shaped fixing part is fixed between the screening barrels. The converging part of the horn-shaped fixing part is fixed to the middle screening barrel. An outer spiral plate is fixed between the horn-shaped fixing part and the outer screening barrel. A material flow cavity is formed between the middle screening barrel and the horn-shaped fixing part. A screening retention cavity is formed between the middle screening barrel and the outer screening barrel along the outer side of the expanding part of the horn-shaped fixing part. A second screening cavity is formed between the horn-shaped fixing part, the outer screening barrel, and the outer spiral plate. The steel ball passes through the first screening cavity, the material flow cavity, the screening retention cavity, and the second screening cavity in sequence. The diameter of the first screening hole is larger than the diameter of the second screening hole.

[0008] Preferably, an outer feeding part is integrally connected to the right side of the outer screening barrel. The outer feeding part is open and fixed to the middle screening barrel by a reinforcing connection part. The inner side of the reinforcing connection part is an arc-shaped surface. A second support plate is rotatably connected to the lower outer end of the outer screening barrel along the right side of the second screening hole via a bearing. A first feeding guide arc-shaped plate is installed on the outer side of the second support plate along the lower end of the outer feeding part.

[0009] Preferably, a central feeding section is integrally connected to the right side of the intermediate screening barrel.

[0010] Preferably, a connecting ring plate is rotatably connected to the outside of the central feeding section via a bearing, and a second feeding guide arc plate is installed on the outer side of the connecting ring plate along the lower end of the central feeding section. The connecting ring plate and the second support plate are fixed together by a connecting bracket.

[0011] Preferably, a connecting neck is integrally connected to the other side of the intermediate screening barrel, and a feeding part is integrally connected to the other side of the connecting neck. A fixing toothed ring is fixed to the outside of the connecting neck.

[0012] Preferably, the lower outer end of the intermediate screening barrel is rotatably connected to a first support plate via a bearing along the left side of the first screening hole, and the lower ends of the first support plate and the second support plate are jointly fixed with a lower support plate.

[0013] Preferably, a drive motor is installed on the outer side of the first support plate, a first bevel gear is installed on the output shaft end of the drive motor, a second bevel gear is meshed with the inner side of the first bevel gear, a drive gear is coaxially connected to the inner side of the second bevel gear, and the drive gear is meshed with a fixed gear ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the amount of steel balls poured for screening each time cannot be too large, otherwise normal screening cannot be achieved, resulting in problems of low screening efficiency and low screening accuracy.

[0015] (1) In this utility model, the inclined steel ball screening barrel and the continuous feeding and screening design enable high chromium steel balls to pass quickly and smoothly through the first screening chamber, the material flow chamber, the screening residence chamber, the second screening chamber, and each discharge trough, and can continuously screen a large number of high chromium steel balls, which greatly improves the screening efficiency.

[0016] (2) In this utility model, the design of double-layer screening barrel, multiple screening chambers, bidirectional spiral plate and outer spiral plate increases the number of screenings and paths of steel balls, effectively separates steel balls of different sizes, and maximizes the stroke of the two screenings in the presence of the horn-shaped fixed part, thereby improving the screening accuracy.

[0017] (3) In this utility model, the transmission method of the bevel gear and the drive gear is simple and has high transmission efficiency, which can realize the stable rotation of the steel ball screening barrel and ensure the smooth progress of the screening process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a screening device for producing high-chromium steel balls according to this utility model, viewed from one side.

[0019] Figure 2 This is a schematic diagram of the overall structure of a screening device for producing high-chromium steel balls according to the present invention, viewed from another side.

[0020] Figure 3 This is a front view of a screening device for producing high-chromium steel balls according to the present invention;

[0021] Figure 4This is a schematic diagram of the structure of the screening barrel of a screening device for producing high-chromium steel balls according to this utility model;

[0022] Figure 5 This is a cross-sectional view of the screening barrel of a screening device for producing high-chromium steel balls according to this utility model.

[0023] In the diagram: 1. Lower support plate; 2. First support plate; 3. Second support plate; 4. First feeding guide arc plate; 5. Connecting bracket; 6. Connecting ring plate; 7. Second feeding guide arc plate; 8. Steel ball screening barrel; 9. Connecting neck; 10. Feeding part; 11. Fixing toothed ring; 12. Middle screening barrel body; 13. Central feeding part; 14. First screening hole; 15. Bidirectional spiral plate; 16. First screening chamber; 17. Outer screening barrel body; 18. Outer feeding part; 19. Second screening hole; 20. Horn-shaped fixing part; 21. Outer spiral plate; 22. Material flow chamber; 23. Screening residence chamber; 24. Second screening chamber; 25. Drive motor; 26. First bevel gear; 27. Second bevel gear; 28. Drive gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1-5 This utility model provides an embodiment of a screening device for producing high-chromium steel balls, mainly comprising a lower support plate 1, a first support plate 2, a second support plate 3, a first feeding guide arc plate 4, a connecting bracket 5, a connecting ring plate 6, a second feeding guide arc plate 7, and a steel ball screening barrel 8. The steel ball screening barrel 8 is inclined, which allows the high-chromium steel balls to move along the screening path by their own gravity during the screening process, eliminating the need for an additional pushing device, reducing energy consumption, and improving screening efficiency.

[0026] (1) Filtering structure:

[0027] The steel ball screening barrel 8 consists of an intermediate screening barrel 12 and an outer screening barrel 17, with the outer screening barrel 17 fixed to the outside of the intermediate screening barrel 12. A bidirectional spiral plate 15 is fixed inside the intermediate screening barrel 12, forming two first screening chambers 16 through the separation of the bidirectional spiral plate 15. Several first screening holes 14 are also arrayed on the intermediate screening barrel 12. Several second screening holes 19 are arrayed on the outer screening barrel 17. This double-layer screening barrel and multi-chamber design increases the screening path and the number of screening times for the steel balls, thus improving the screening accuracy.

[0028] A horn-shaped fixing part 20 is fixed between the intermediate screening barrel 12 and the outer screening barrel 17, and the converging part of the horn-shaped fixing part 20 is fixed to the intermediate screening barrel 12. An outer spiral plate 21 is fixed between the horn-shaped fixing part 20 and the outer screening barrel 17. A material flow cavity 22 is formed between the intermediate screening barrel 12 and the horn-shaped fixing part 20. A screening retention cavity 23 is formed between the intermediate screening barrel 12 and the outer screening barrel 17 along the outer side of the expansion part of the horn-shaped fixing part 20. A second screening cavity 24 is formed between the horn-shaped fixing part 20, the outer screening barrel 17, and the outer spiral plate 21. The steel ball passes through the first screening cavity 16, the material flow cavity 22, the screening retention cavity 23, and the second screening cavity 24 in sequence. The horn-shaped fixing part 20 is inclined in the feeding direction. This design allows high-chromium steel balls smaller than the aperture of the first screening hole 14 to smoothly reach the screening residence chamber 23 along the horn-shaped fixing part 20, and continue to move along the second screening chamber 24 through the overall rotation of the steel ball screening barrel 8, further improving the smoothness and efficiency of screening.

[0029] The diameter of the first screening hole 14 is larger than the diameter of the second screening hole 19.

[0030] (2) Material feeding and guiding structure:

[0031] An external discharge section 18 is integrally connected to the right side of the outer screening barrel 17. The external discharge section 18 is open to facilitate the smooth discharge of high-chromium steel balls larger than the diameter of the second screening hole 19. The external discharge section 18 is fixed to the intermediate screening barrel 12 by a reinforcing connection. The inner side of the reinforcing connection is arc-shaped, which reduces the collision and wear of the steel balls during the discharge process and protects the quality of the steel balls. A second support plate 3 is rotatably connected to the lower outer end of the outer screening barrel 17 along the right side of the second screening hole 19 via a bearing. A first discharge guide arc plate 4 is installed on the outer side of the second support plate 3 along the lower end of the external discharge section 18. The first discharge guide arc plate 4 can accurately guide the high-chromium steel balls discharged from the external discharge section 18 into the second-stage box placed on the upper end of the lower support plate 1.

[0032] A central discharge section 13 is integrally connected to the right side of the intermediate screening bin 12. A connecting ring plate 6 is rotatably connected to the outside of the central discharge section 13 via a bearing. A second discharge guide arc plate 7 is installed on the outer side of the connecting ring plate 6 along the lower end of the central discharge section 13. The connecting ring plate 6 is fixed to the second support plate 3 by a connecting bracket 5. The second discharge guide arc plate 7 can accurately guide the high-chromium steel balls discharged from the central discharge section 13 into the first-stage box placed on the upper end of the lower support plate 1.

[0033] (3) Feeding and connecting structure:

[0034] A connecting neck 9 is integrally connected to the other side of the intermediate screening barrel 12, and a feeding part 10 is integrally connected to the other side of the connecting neck 9. High-chromium steel balls can be easily poured into the steel ball screening barrel 8 through the feeding part 10 to achieve continuous feeding. A fixing toothed ring 11 is fixed to the outside of the connecting neck 9. The fixing toothed ring 11 is used to connect with the drive device to drive the steel ball screening barrel 8 to rotate.

[0035] The lower end of the outer side of the intermediate screening barrel 12 is rotatably connected to the first support plate 2 via a bearing along the left side of the first screening hole 14. The lower ends of the first support plate 2 and the second support plate 3 are jointly fixed to the lower support plate 1, which provides a stable support foundation for the entire device.

[0036] (4) Drive structure:

[0037] A drive motor 25 is mounted on the outer side of the first support plate 2. A first bevel gear 26 is mounted on the output shaft of the drive motor 25. A second bevel gear 27 is meshed with the inner side of the first bevel gear 26. A drive gear 28 is coaxially connected to the inner side of the second bevel gear 27. The drive gear 28 meshes with a fixed gear ring 11. During operation, the drive motor 25 drives the first bevel gear 26 to rotate. Through the meshing relationship between the first bevel gear 26 and the second bevel gear 27, the drive gear 28, which is coaxial with the second bevel gear 27, rotates. The fixed gear ring 11, which meshes with the drive gear 28, drives the steel ball screening barrel 8 to rotate. This drive method has a simple structure, high transmission efficiency, and can achieve stable rotation of the steel ball screening barrel 8, thereby ensuring the smooth progress of the screening process.

[0038] (5) Working principle:

[0039] High-chromium steel balls are poured into the steel ball screening bin 8 through the feeding section 10. The drive motor 25 starts, driving the first bevel gear 26 to rotate. Through the meshing relationship between the first bevel gear 26 and the second bevel gear 27, the drive gear 28, which is coaxial with the second bevel gear 27, rotates. The fixed gear ring 11, which meshes with the drive gear 28, drives the steel ball screening bin 8 to rotate. During the screening process, high-chromium steel balls can be continuously poured in, achieving continuous screening and greatly improving screening efficiency.

[0040] The high-chromium steel balls first enter the intermediate screening barrel 12 and are screened along the first screening chamber 16 formed by the bidirectional spiral plate 15. The high-chromium steel balls with a diameter larger than the first screening hole 14 move out through the central feeding part 13 along the first screening chamber 16 and fall into the first-stage box placed on the upper end of the lower support plate 1 through the second feeding guide arc plate 7.

[0041] High-chromium steel balls smaller than the diameter of the first screening hole 14 leak out of the first screening hole 14. Because the horn-shaped fixing part 20 is tilted in the feeding direction, these high-chromium steel balls reach the screening residence chamber 23 along the horn-shaped fixing part 20, and continue to move along the second screening chamber 24 through the overall rotation of the steel ball screening barrel 8.

[0042] The high-chromium steel ball, which is larger than the diameter of the second screening hole 19, moves out along the outer feeding part 18 and falls into the second-stage box placed on the upper end of the lower support plate 1 through the first feeding guide arc plate 4.

[0043] The high-chromium steel ball, smaller than the diameter of the second screening hole 19, leaks out of the second screening hole 19 and falls into the third-stage box placed on the upper end of the lower support plate 1.

[0044] The high-chromium steel balls in the first and third stage chambers were too large and too small, respectively. Using high-chromium steel balls from the second stage chamber ensured that the selected high-chromium steel balls met the size requirements, thus improving product quality. Through multi-stage screening, steel balls of different sizes can be accurately separated, guaranteeing the dimensional consistency of the final product.

[0045] The third-level enclosure is not shown in the figure. You can directly select an enclosure with suitable height and planar dimensions, without being limited to a specific shape.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A screening device for producing high-chromium steel balls, comprising a steel ball screening barrel (8) arranged at an angle, characterized in that: The steel ball screening barrel (8) consists of an intermediate screening barrel body (12) and an outer screening barrel body (17), with the outer screening barrel body (17) fixed to the outside of the intermediate screening barrel body (12). A bidirectional spiral plate (15) is fixed inside the intermediate screening barrel body (12), forming two first screening chambers (16) through the separation of the bidirectional spiral plate (15). Several first screening holes (14) are arrayed on the intermediate screening barrel body (12). Several second screening holes (19) are arrayed on the outer screening barrel body (17). A horn-shaped fixing part (20) is fixed between the intermediate screening barrel body (12) and the outer screening barrel body (17). The converging part of the horn-shaped fixing part (20) is connected to the intermediate screening barrel body (8). 12) Fixing: An outer spiral plate (21) is fixed between the horn-shaped fixing part (20) and the outer screening barrel (17); a material flow cavity (22) is formed between the intermediate screening barrel (12) and the horn-shaped fixing part (20); a screening residence cavity (23) is formed between the intermediate screening barrel (12) and the outer screening barrel (17) along the outer side of the expansion part of the horn-shaped fixing part (20); a second screening cavity (24) is formed between the horn-shaped fixing part (20), the outer screening barrel (17) and the outer spiral plate (21); the steel ball passes through the first screening cavity (16), the material flow cavity (22), the screening residence cavity (23) and the second screening cavity (24) in sequence; the diameter of the first screening hole (14) is larger than the diameter of the second screening hole (19).

2. The screening device for producing high-chromium steel balls according to claim 1, characterized in that: The outer screening barrel (17) is integrally connected to the right side of the outer feeding part (18), which is open. The outer feeding part (18) is fixed to the middle screening barrel (12) by a reinforcing connection part. The inner side of the reinforcing connection part is an arc-shaped surface. The lower outer end of the outer screening barrel (17) is rotatably connected to the second support plate (3) along the right side of the second screening hole (19) by a bearing. The outer side of the second support plate (3) is installed with the first feeding guide arc plate (4) along the lower end of the outer feeding part (18).

3. The screening device for producing high-chromium steel balls according to claim 2, characterized in that: The central feeding section (13) is integrally connected to the right side of the intermediate screening barrel (12).

4. The screening device for producing high-chromium steel balls according to claim 3, characterized in that: The central feeding part (13) is rotatably connected to a connecting ring plate (6) via a bearing. A second feeding guide arc plate (7) is installed on the outer side of the connecting ring plate (6) along the lower end of the central feeding part (13). The connecting ring plate (6) and the second support plate (3) are fixed together by a connecting bracket (5).

5. A screening device for producing high-chromium steel balls according to claim 3, characterized in that: The intermediate screening barrel (12) is integrally connected to a connecting neck (9) on the other side, and the connecting neck (9) is integrally connected to a feeding part (10) on the other side. A fixing toothed ring (11) is fixed to the outside of the connecting neck (9).

6. The screening device for producing high-chromium steel balls according to claim 5, characterized in that: The lower end of the outer side of the intermediate screening barrel (12) is rotatably connected to the first support plate (2) via a bearing along the left side of the first screening hole (14). The lower ends of the first support plate (2) and the second support plate (3) are jointly fixed with a lower support plate (1).

7. A screening device for producing high-chromium steel balls according to claim 6, characterized in that: A drive motor (25) is installed on the outside of the first support plate (2). A first bevel gear (26) is installed on the output shaft end of the drive motor (25). A second bevel gear (27) is meshed with the inside of the first bevel gear (26). A drive gear (28) is coaxially connected to the inside of the second bevel gear (27). The drive gear (28) meshes with the fixed gear ring (11).

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