Tower mill screw agitator shaft body shield

Abstract

The utility model relates to a tower mill screw stirrer shaft body apron belongs to tower mill technical field, the utility model discloses two half aprons of paired arrangement, two half aprons of each pair are arranged between two spiral blades of shaft body respectively, and the upper and lower two straight arc end faces of two half aprons are respectively at the same axial position of shaft body, and the inner arc surface of half apron is coaxial with the cylindrical surface of shaft body, and the inner arc surface of half apron can cover the wear -resisting rubber layer on the cylindrical surface of shaft body, and the left and right two spiral end faces of half apron are respectively attached with the spiral surface of two spiral blade roots, a plurality of round holes are arranged on half apron, and the fixed seat with screw hole is arranged on the outer arc surface at every round hole, and the threaded seat corresponding with fixed seat is arranged at the corresponding round hole of shaft body, the threaded seat is embedded in the corresponding round hole, and the threaded hole of threaded seat corresponds with the threaded hole of fixed seat. The utility model can protect the wear -resisting rubber layer on the shaft body from wearing and tearing, and is convenient to maintain and replace.

Description

Technical Field

[0001] This utility model belongs to the technical field of tower mills, and specifically relates to a protective plate for the shaft body of a tower mill spiral agitator. Background Technology

[0002] Currently, tower mills are mainly used in fine grinding operations in industries such as mining, cement, and metallurgy, and can replace ball mills as secondary or tertiary grinding equipment. Compared with ball mills, tower mills have the advantages of simple structure, small footprint, high energy utilization, low media ball loss, and uniform product particle size distribution. They have been widely recognized in the industry and have broad market application prospects.

[0003] The spiral agitator is the core component of a tower mill. Its structure consists of a shaft, spiral blades welded to the shaft, spiral liners, and a wear-resistant rubber layer integrally vulcanized onto the shaft and spiral blades. During tower mill operation, the spiral agitator rotates, stirring the media balls inside the cylinder. The friction and shearing forces generated between the balls capture and grind the material particles, making them finer. The spiral liners and the wear-resistant rubber layer on the shaft body are easily worn parts. While the spiral liners can be replaced periodically, the wear-resistant rubber layer on the shaft body cannot be replaced. Repairing it after wear is difficult and ineffective, and it tends to break again after a period of use. Utility Model Content

[0004] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a protective plate for the shaft body of a tower mill spiral agitator. This invention can protect the wear-resistant rubber layer on the shaft body from wear and is easy to maintain and replace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] This utility model provides a protective plate for the shaft body of a spiral agitator in a tower mill. It is characterized by comprising two paired semi-protective plates, each pair of which is positioned between two spiral blades of the shaft body. The upper and lower straight arc end faces of the two semi-protective plates are located on the same axial direction of the shaft body. The inner arc surface of the semi-protective plate is coaxial with the cylindrical surface of the shaft body. The inner arc surface of the semi-protective plate can cover the wear-resistant rubber layer on the cylindrical surface of the shaft body. The left and right spiral end faces of the semi-protective plate are respectively attached to the spiral surfaces at the roots of the two spiral blades. The semi-protective plate has multiple circular holes, and a fixing seat with a threaded hole is provided on the outer arc surface of each circular hole. The shaft body has a threaded seat corresponding to the fixing seat at the corresponding circular hole. The threaded seat is embedded in the corresponding circular hole, and the threaded hole of the threaded seat corresponds to the threaded hole of the fixing seat.

[0007] Furthermore, multiple pairs of the semi-protective plates are arranged along the axial direction of the shaft body, so that all the semi-protective plates completely cover the wear-resistant rubber layer on the cylindrical surface of the shaft body, and the straight arc end faces of two axially adjacent semi-protective plates are in contact with each other.

[0008] Furthermore, the pitch and direction of the helical threads on the left and right helical end faces of the semi-protective plate are the same as the pitch and direction of the helical blade.

[0009] The beneficial effects of this utility model.

[0010] This invention can protect the wear-resistant rubber layer on the shaft body from wear. When the guard plate is worn, the guard plate can be replaced. There is no need to frequently repair the wear-resistant rubber layer on the shaft body, which reduces the maintenance time and cost for users. The guard plate is modularly designed and can be partially replaced according to the actual wear condition. Only one or a group of them needs to be replaced. It is convenient to repair and replace, has low manufacturing cost, and good economic benefits. Attached Figure Description

[0011] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0012] Figure 1 This is a structural schematic diagram of one of the pairs of protective plates of this utility model.

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention after multiple pairs of protective plates are installed.

[0014] Figure 3 This is a cross-sectional structural diagram of the present invention after installation.

[0015] Figure 4 This is a utility model Figure 3 A magnified structural diagram at point A.

[0016] The markings in the diagram are as follows: 1 is the half-protective plate, 2 is the shaft body, 3 is the helical blade, 4 is the straight arc end face, 5 is the inner arc surface, 6 is the wear-resistant rubber layer, 7 is the helical end face, 8 is the round hole, 9 is the fixed seat, 10 is the threaded seat, and 11 is the outer arc surface. Detailed Implementation

[0017] As shown in the accompanying drawings, this embodiment provides a protective plate for the shaft body of a tower mill spiral agitator, comprising two paired half-protective plates 1, with each pair of half-protective plates 1 respectively positioned between two spiral blades 3 of the shaft body 2. Since the spiral agitators of tower mills all have a double spiral blade 3 structure, the two spiral blades 3 divide the wear-resistant rubber layer 6 on the cylindrical surface of the shaft body 2 into two spiral arc surfaces. Therefore, the half-protective plates 1 must also be used in pairs. The upper and lower straight arc end faces 4 of each pair of two half-protective plates 1 are respectively located in the same axial direction on the shaft body 2. One half-protective plate 1 in each pair covers one side of the arc surface of the wear-resistant rubber layer 6 of the shaft body 2, and the other half-protective plate 1 covers the other side of the arc surface.

[0018] The inner arc surface 5 of the semi-protective plate 1 is coaxial with the cylindrical surface of the shaft body 2, so that the inner arc surface 5 of the semi-protective plate 1 can cover the wear-resistant rubber layer 6 on the cylindrical surface of the shaft body 2. Multiple pairs of semi-protective plates 1 are arranged along the axial direction of the shaft body 2 so that all the semi-protective plates 1 completely cover the wear-resistant rubber layer 6 on the cylindrical surface of the shaft body 2. The straight arc end faces 4 of two axially adjacent semi-protective plates 1 are in contact.

[0019] The left and right spiral end faces 7 of the semi-protective plate 1 are respectively attached to the spiral surfaces at the roots of the two spiral blades 3. The spiral pitch and direction of the left and right spiral end faces 7 of the semi-protective plate 1 are the same as the spiral pitch and direction of the spiral blades 3.

[0020] The semi-protective plate 1 is provided with multiple round holes 8, and a fixing seat 9 with a threaded hole is provided on the outer arc surface 11 of each round hole 8. The shaft body 2 is provided with a threaded seat 10 corresponding to the fixing seat 9 at the corresponding round hole 8. The threaded seat 10 is embedded in the corresponding round hole 8, and the threaded hole of the threaded seat 10 corresponds to the threaded hole of the fixing seat 9. The semi-protective plate 1 is connected and fixed to the shaft body 2 by passing a bolt through the threaded hole of the fixing seat 9 and screwing it into the threaded hole of the threaded seat 10.

[0021] During installation, each fixing seat 9 is welded to the corresponding position of the circular hole 8 on the outer arc surface 11 of each half-protector plate 1, and the central axis of the threaded hole of the fixing seat 9 is aligned with the central axis of the circular hole 8 on the half-protector plate 1. Then, the pair of half-protector plates 1 are assembled with the shaft body 2, so that the inner arc surface 5 of the half-protector plate 1 is coaxial with the cylindrical surface of the shaft body 2, the two helical end faces 7 of the half-protector plate 1 are respectively in contact with the upper and lower helical surfaces at the roots of the two helical blades 3, and the upper and lower straight arc end faces 4 of the two half-protector plates 1 are aligned. The intersection of the central axis of the threaded hole of the fixing seat 9 and the cylindrical surface of the shaft body 2 is the welding center point of the threaded seat 10. After marking, the two half-protector plates 1 are removed, and then the threaded seat 10 is welded at each marked point, so that the center of the threaded hole of the threaded seat 10 is aligned with the marked point.

[0022] After the wear-resistant rubber layer 6 is vulcanized on the cylindrical surface of the shaft body 2, a pair of two half-protective plates 1 are installed so that the inner arc surface 5 of the two half-protective plates 1 fits against the cylindrical surface of the wear-resistant rubber layer 6 on the shaft body. The threaded hole of the threaded seat 10 coincides with the central axis of the threaded hole of the fixed seat 9. At the same time, the threaded seat 10 is embedded in the round hole 8 of the half-protective plate 1. Bolts are installed at each threaded hole of the fixed seat 9 and screwed into the threaded hole of the threaded seat 10 to fix the two half-protective plates 1 to the shaft body 2.

[0023] After the first pair of guard plates is installed, install the second pair of guard plates using the same method, ensuring that the lower straight arc end face 4 of the second pair of guard plates fits against the upper straight arc end face 4 of the first pair of guard plates. Then continue installing the third and fourth pairs of guard plates in sequence, until the top of the shaft body is reached, so that the wear-resistant rubber layer 6 on the shaft body is completely covered.

[0024] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A protective plate for the shaft body of a spiral agitator in a tower mill, characterized in that, The device includes two paired semi-protective plates (1), each pair of which is positioned between two helical blades (3) of the shaft body (2). The upper and lower straight arc end faces (4) of the two semi-protective plates (1) are located on the same axial direction of the shaft body (2). The inner arc surface (5) of the semi-protective plate (1) is coaxial with the cylindrical surface of the shaft body (2). The inner arc surface (5) of the semi-protective plate (1) can cover the wear-resistant rubber layer (6) on the cylindrical surface of the shaft body (2). The left and right spiral ends of the semi-protective plate (1) are... The end face (7) is respectively attached to the spiral surface at the root of the two spiral blades (3). The half guard plate (1) is provided with multiple round holes (8), and a fixed seat (9) with a threaded hole is provided on the outer arc surface (11) of each round hole (8). The shaft body (2) is provided with a threaded seat (10) corresponding to the fixed seat (9) at the round hole (8). The threaded seat (10) is embedded in the corresponding round hole (8), and the threaded hole of the threaded seat (10) corresponds to the threaded hole of the fixed seat (9).

2. The shaft body guard plate of a tower mill spiral agitator according to claim 1, characterized in that, Multiple pairs of semi-protective plates (1) are arranged along the axial direction of the shaft body (2) so that all the semi-protective plates (1) completely cover the wear-resistant rubber layer (6) on the cylindrical surface of the shaft body (2), and the straight arc end faces (4) of two axially adjacent semi-protective plates (1) are in contact with each other.

3. The shaft body guard plate of a tower mill spiral agitator according to claim 1, characterized in that, The pitch and direction of the helical end faces (7) on the left and right sides of the semi-protective plate (1) are the same as the pitch and direction of the helical blade (3).

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