Anti-abrasion structure of circulating type stirring ball mill

Abstract

The utility model relates to the technical field of circulating type stirring ball mills, in particular to a circulating type stirring ball mill anti-abrasion structure which comprises a stock bin, a supporting plate is arranged at the bottom of the stock bin, a first through hole is formed in the middle of the supporting plate, a cylindrical screen covers the upper side of the through hole, and a second through hole is formed in the top end of the cylindrical screen. A stirring shaft is rotationally connected into the second through hole, the bottom side of the barrel-shaped screen is hollowed out, the bottom end of the side wall of the barrel-shaped screen extends outwards to form a boss, and the boss is fixedly connected with the supporting plate through a fastener; according to the utility model, the cylindrical screen is additionally arranged between the stirring shaft and the supporting plate, so that a moving space is added for the grinding balls, the friction of the grinding balls to the stirring shaft is reduced, the friction of the grinding balls to the cylindrical screen is reduced, the replacement frequency of the cylindrical screen is reduced, and the use and maintenance cost is saved.

Description

Technical Field

[0001] The utility model belongs to the field of circulating stirred ball mills, and particularly relates to an anti-wear structure for a circulating stirred ball mill. Background Art

[0002] For the trough component of a circulating stirred ball mill, the whole trough component includes a bin, a filter screen plate, and a tetrafluoro bushing. Then, the bin and the filter screen plate are divided into two parts to facilitate the replacement of the tetrafluoro bushing in the later stage. The biggest drawback of this structure is that during the impact movement, the grinding balls are embedded between the tetrafluoro bushing and the stirring shaft. Since the stirring shaft is constantly rotating and the balls are stuck inside, it will quickly cause varying degrees of wear to the stirring shaft and the tetrafluoro bushing. After using for a period of time, the tetrafluoro bushing needs to be replaced. After a long time, the stirring shaft also needs to be replaced, which increases the after-sales cost for customers. Therefore, it is necessary to design an anti-wear structure for a circulating stirred ball mill to solve the above problems. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an anti-wear structure for a circulating stirred ball mill to solve the problem that the tetrafluoro bushing and the main shaft of the trough component of the existing circulating stirred ball mill in the market are prone to wear and increase costs as mentioned in the above background art.

[0004] To achieve the above object, the technical solution of the utility model is as follows:

[0005] The anti-wear structure of a circulating stirred ball mill includes a bin. A support plate is provided at the bottom of the bin. A first through hole is opened in the middle of the support plate. A cylindrical screen is covered on the upper side of the through hole. A second through hole is opened at the top of the cylindrical screen. A stirring shaft is rotatably connected in the second through hole. The bottom side of the cylindrical screen is hollowed out. A boss extends outward from the bottom end of the side wall of the cylindrical screen. The boss is fixedly connected to the support plate through a fastener.

[0006] As a further improvement of the utility model, a through groove is opened on one side of the support plate away from the cylindrical screen. A screen plate is provided on the through groove. The screen plate is installed on the support plate through screws.

[0007] As a further improvement of the utility model, the diameter of the cylindrical screen is more than twice the diameter of the stirring shaft.

[0008] As a further improvement of the utility model, the height of the cylindrical screen is higher than the top end of the support plate, and the distance between the top surface of the cylindrical screen and the top wall of the bin is less than the distance between the top surface of the cylindrical screen and the support plate.

[0009] As a further improvement of the utility model, the boss is provided with a first fastening hole matching the fastener, and the support plate is provided with a second fastening hole matching the fastener.

[0010] As a further improvement of the present utility model, a third through hole is provided in the middle of the top end of the silo, and a stirring shaft is rotatably connected in the third through hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By adding a cylindrical screen between the stirring shaft and the support plate, the present utility model provides an activity space for the grinding balls, reduces the friction between the grinding balls and the stirring shaft, and at the same time reduces the friction between the grinding balls and the cylindrical screen, reducing the replacement frequency of the cylindrical screen and the stirring shaft, and saving the use and maintenance costs.

[0013] By adding a cylindrical screen, the present utility model moves the dynamic and static intersection point between the cylindrical screen and the stirring shaft upward, where the height of the balls and the material cannot reach, preventing the balls and the material from overflowing from the dynamic and static intersection point.

[0014] By adding a cylindrical screen, compared with the prior art under the same screen plate area, the present utility model increases the area for conveying materials and increases the discharge amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic cross-sectional structure diagram of the prior art;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the present utility model;

[0018] Figure 3 It is a partial enlarged schematic diagram of the present utility model Figure 2

[0019] Among them, the names represented by the part numbers in the above three schematic diagrams are as follows:

[0020] 1. Silo; 11. Third through hole;

[0021] 2. Support plate; 21. First through hole; 22. Through groove; 221. Second fastening hole;

[0022] 3. Cylindrical screen; 31. Second through hole; 32. Boss; 321. First fastening hole;

[0023] 4. Stirring shaft;

[0024] ​5. Sieve plate; 51. Screw Detailed implementation mode

[0025] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] The present invention provides the following embodiments:

[0027] The anti-wear structure of a circulating stirring ball mill includes a feed bin 1. There is a third through hole 11 in the middle of the top end of the feed bin 1. A stirring shaft 4 is rotatably connected in the third through hole 11. A support plate 2 is provided at the bottom of the feed bin 1. A first through hole 21 is opened in the middle of the support plate 2. A cylindrical sieve mesh 3 is covered above the through hole. A second through hole 31 is opened at the top end of the cylindrical sieve mesh 3. A stirring shaft 4 is rotatably connected in the second through hole 31. The bottom side of the cylindrical sieve mesh 3 is hollowed out. A boss 32 extends outward from the bottom end of the side wall of the cylindrical sieve mesh 3. The boss 32 is fixedly connected to the support plate 2 through a fastener. A first fastening hole 321 matching the fastener 6 is provided on the boss 32. A second fastening hole 221 matching the fastener 6 is provided on the support plate 2;

[0028] By adding a cylindrical sieve mesh 3 between the stirring shaft 4 and the support plate 2, the diameter of the cylindrical sieve mesh 3 is more than twice the diameter of the stirring shaft 4, leaving enough space for the grinding balls to move, adding a moving space for the grinding balls, reducing the friction between the grinding balls and the stirring shaft 4, and at the same time reducing the friction between the grinding balls and the cylindrical sieve mesh 3, reducing the replacement frequency of the cylindrical sieve mesh 3, and saving the use and maintenance costs;

[0029] By adding the cylindrical sieve mesh 3, the height of the cylindrical sieve mesh 3 is higher than the top end of the support plate 2, and the distance between the top surface of the cylindrical sieve mesh 3 and the top wall of the feed bin 1 is less than the distance between the top surface of the cylindrical sieve mesh 3 and the support plate 2, moving the dynamic and static intersection point between the cylindrical sieve mesh 3 and the stirring shaft 4 upward, where the height of the balls and materials cannot reach, preventing the balls and materials from overflowing from the dynamic and static intersection point;

[0030] A through groove 22 is opened on one side of the support plate 2 away from the cylindrical sieve mesh 3. A sieve plate 5 is provided on the through groove 22. The sieve plate 5 is installed on the support plate 2 through screws 51. The sieve plate 5 can convey materials. By adding the cylindrical sieve mesh 3, compared with the same sieve plate 5 area in the prior art, the cylindrical sieve mesh 3 can also convey materials, increasing the area for conveying materials and increasing the discharge amount.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wear-resistant structure for a circulating stirring ball mill, comprising a silo (1), characterized in that The bottom of the silo (1) is provided with a support plate (2), a first through hole (21) is provided in the middle of the support plate (2), a cylindrical screen (3) is provided on the upper side of the through hole, a second through hole (31) is provided at the top of the cylindrical screen (3), a stirring shaft (4) is rotatably connected in the second through hole (31), the bottom side of the cylindrical screen (3) is hollow, a boss (32) extends outward from the bottom end of the side wall of the cylindrical screen (3), and the boss (32) is fixedly connected to the support plate (2) by a fastener.

2. The anti-wear structure of the circulating stirring ball mill according to claim 1 is characterized in that: A through slot (22) is provided on one side of the support plate (2) away from the cylindrical screen (3); a sieve plate (5) is provided on the through slot (22); and the sieve plate (5) is mounted on the support plate (2) by means of screws (51).

3. The anti-wear structure of the circulating stirring ball mill according to claim 2 is characterized in that: The diameter of the cylindrical screen (3) is greater than twice the diameter of the stirring shaft (4).

4. The anti-wear structure of the circulating stirring ball mill according to claim 3 is characterized in that: The height of the cylindrical screen (3) is higher than the top of the support plate (2), and the distance between the top surface of the cylindrical screen (3) and the top wall of the silo (1) is smaller than the distance between the top surface of the cylindrical screen (3) and the support plate (2).

5. The anti-wear structure of the circulating stirring ball mill according to claim 4 is characterized in that: The boss (32) is provided with a first fastening hole (321) matching the fastener, and the support plate (2) is provided with a second fastening hole (221) matching the fastener.

6. The anti-wear structure of the circulating stirring ball mill according to claim 5 is characterized in that: A third through hole (11) is provided in the middle of the top of the silo (1), and a stirring shaft (4) is rotatably connected in the third through hole (11).

Images