A semi-split brush tube tobacco storage cabinet belt cleaning device

Abstract

This utility model relates to the field of tobacco equipment machinery technology, and in particular to a half-section brush tube tobacco storage cabinet belt cleaning device, including a brush roller shaft, a half-section brush tube, and a fixing bolt group; the half-section brush tubes are symmetrically arranged on the outside of the brush roller shaft, and the two symmetrical half-cylinder brush roller shafts are joined together to form a cylindrical body, and the surface of the cylindrical body is provided with spiral brushes arranged in a continuous spiral pattern; the fixing bolt group is simultaneously installed through the cylinder walls of the two half-section brush tubes and the brush rollers; both ends of the brush roller shaft are also provided with a rotation drive component for transmitting torque to the brush roller shaft, and an axial positioning component for constraining the axial displacement of the brush roller shaft; by the fixing bolt group simultaneously penetrating the radial through holes of the cylinder walls of the two half-section brush tubes and the brush roller shaft, a transverse and longitudinal two-way locking structure is formed between the half-cylinders and between the cylinder and the roller shaft. This design ensures that the brush tubes rotate smoothly during operation under high-speed rotation conditions, and are fixed firmly in both the axial and radial directions, without displacement.

Description

Technical Field

[0001] This utility model relates to the field of tobacco equipment machinery technology, and in particular to a semi-split brush tube tobacco storage cabinet belt cleaning device. Background Technology

[0002] In tobacco processing production lines, the cleaning device of the storage belt conveyor is crucial to prevent tobacco material from adhering. Currently, rotating brush drums are widely used for belt cleaning. However, traditional brush drums are mostly integral structures, and replacement requires disassembling external components such as the drive chain and bearing housing, which can take several hours. This delay in maintenance can easily lead to material residue, the breeding of tobacco insects, or contamination.

[0003] To address this issue, existing technologies have proposed a split-type brush structure, such as a split brush disclosed in patent CN202698199U, which features a design where two semi-cylindrical brush bodies are joined and fixed together by end mounting screw holes. While this design simplifies the brush body replacement process, it still suffers from the following drawbacks:

[0004] First, the connection structure is unstable: the mounting screws only penetrate the joint surface of the two half-cylinders and do not form a direct connection with the brush roller shaft, resulting in a radial gap between the brush body and the roller shaft. Under high-speed rotation conditions, vibration displacement is easily generated, reducing cleaning stability.

[0005] Secondly, disassembly is difficult: because the screw mounting holes are located on the end face of the brush body and are blocked by dense bristles, the disassembly tool cannot apply force vertically, and the angle needs to be adjusted repeatedly, resulting in low maintenance efficiency.

[0006] In addition, there are functional limitations: the brush body adopts a linear bristle arrangement, resulting in discontinuities in the cleaning trajectory; and the brush roller shaft is a non-replaceable integral structure, requiring the entire device to be scrapped when the shaft wears out, increasing the cost of use. Utility Model Content

[0007] In order to overcome the shortcomings of the existing technology, such as the unstable connection structure between the brush body and the roller shaft, the difficulty in disassembling the mounting screws and the brush body, and the functional limitations, this utility model provides a semi-split brush cylinder tobacco storage cabinet belt cleaning device, including: a brush roller shaft, a semi-split brush cylinder, and a fixing bolt group.

[0008] The semi-sectioned brush cylinder is symmetrically arranged on the outside of the brush roller shaft. The two symmetrical semi-cylinder brush roller shafts are joined together to form a cylindrical body. The surface of the cylindrical body is provided with spiral brushes arranged in a continuous spiral pattern.

[0009] The fixing bolt group passes through the cylinder walls of both half-section brush cylinders and the brush roller shaft, rigidly connecting the half-section brush cylinders and the brush roller shaft.

[0010] Both ends of the brush roller shaft are also provided with a rotary drive assembly for transmitting torque to the brush roller shaft, and an axial positioning assembly for constraining the axial displacement of the brush roller shaft.

[0011] Preferably, the mounting location of the fixing bolt group is located in the middle of the half-section of the brush cylinder and in the gap of the spiral brush.

[0012] Preferably, the connection section between the brush roller shaft and the semi-split brush cylinder is provided with a number of radially arranged through holes, the axis of the through holes being perpendicular to the axis of the brush roller shaft, and the fixing bolt group passing through the through holes to achieve bidirectional fastening.

[0013] Preferably, the axial positioning assembly includes a bearing, a bearing housing, a bushing, and a set screw; the bearing is sleeved on the end of the brush roller shaft, the bearing housing is fixed to the frame and has a bearing installed at its center; the inner side of the bushing is sleeved on the brush roller shaft, the outer side of the bushing is connected to the bearing, and the set screw passes through the bushing and locks the brush roller shaft.

[0014] Preferably, the rotary drive assembly includes a flat key and a sprocket. The flat key is disposed in the keyway at the end of the brush roller shaft, and the sprocket is sleeved on the outside of the end of the brush roller shaft and connected to the brush roller shaft via the flat key.

[0015] Preferably, the fixing bolt assembly consists of a screw and a nut.

[0016] Preferably, the length of the screw is 2-5 mm longer than the diameter of the cylindrical section plus the thickness of the nut.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model uses a fixing bolt group to simultaneously penetrate the cylinder walls of two half-section brush cylinders and the radial through holes of the brush roller shaft, forming a two-way locking structure in both the transverse and longitudinal directions between the half-cylinders and between the half-cylinders and the roller shaft. The fixing bolt group tightens the two half-cylinders, eliminating the gap at the joint surface. The fixing bolt group and the roller shaft through hole are interference fit to prevent radial movement. This design ensures that the brush cylinder rotates smoothly during high-speed operation, and is fixed firmly in both the axial and radial directions, without displacement or large vibrations. The connection is stable, solving the loosening problem caused by only connecting the half-cylinders in the prior art.

[0019] 2. This utility model, by placing the fixing bolt assembly at the gap of the spiral brush and precisely controlling the bolt length, ensures that the installation and disassembly operation space is unobstructed by the brush bristles, allowing tools to apply force vertically. Furthermore, when assembling the half-cylinder, the gap of the spiral brush facilitates the alignment of the screw with the roller shaft through hole, simplifying assembly and disassembly and improving replacement efficiency. Additionally, the brush cylinder and brush roller shaft can be replaced separately; when the roller shaft wears, only the shaft needs replacement, avoiding complete scrapping. The spiral line extends continuously after the double half-cylinders are assembled, seamlessly covering the cleaning trajectory and resulting in high cleaning efficiency. A hard locking mechanism, consisting of bearings, bushings, and set screws, eliminates axial displacement. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 is Figure 1 Enlarged detail image of point A in the middle;

[0023] Figure 3 This is a partial exploded view of the present invention.

[0024] In the diagram: 1. Brush roller shaft; 2. Half-section brush cylinder; 21. Spiral brush; 3. Fixing bolt group; 31. Screw; 32. Nut; 33. Through hole; 4. Bearing; 5. Bearing housing; 6. Bushing; 7. Set screw; 8. Flat key; 9. Sprocket. Detailed Implementation

[0025] like Figures 1 to 3 As shown, this utility model provides a tobacco storage cabinet belt cleaning device with a semi-split brush cylinder 2, including a brush roller shaft 1, a semi-split brush cylinder 2 and a fixing bolt group 3;

[0026] In this embodiment, the brush roller shaft 1 is a stepped shaft made of high-quality carbon steel. Its shaft section diameter matches the inner hole of the semi-section brush cylinder 2, bearing 4, bushing 6 and sprocket 9, and is provided with an axial positioning shoulder.

[0027] The semi-split brush cylinder 2 is symmetrically arranged on the outside of the brush roller shaft 1. It can be made of plastic. The two symmetrical semi-cylindrical brush roller shafts 1 are joined together to form a cylindrical body. The surface of the cylindrical body is provided with spiral brushes 21 arranged in a continuous spiral pattern.

[0028] The fixing bolt group 3 is simultaneously installed through the cylinder walls of the two half-section brush cylinders 2 and the brush roller shaft 1, rigidly connecting the half-section brush cylinders 2 and the brush roller shaft 1.

[0029] Both ends of the brush roller shaft 1 are also provided with a rotary drive assembly for transmitting torque to the brush roller shaft 1, and an axial positioning assembly for constraining the axial displacement of the brush roller shaft 1.

[0030] In this embodiment, the mounting position of the fixing bolt group 3 is located in the middle of the cross section of the semi-sectioned brush cylinder 2 and in the gap of the spiral brush 21; the connection section between the brush roller shaft 1 and the semi-sectioned brush cylinder 2 is provided with a plurality of radially arranged through holes 33, the axis of the through holes 33 is perpendicular to the axis of the brush roller shaft 1, and the fixing bolt group 3 passes through the through holes 33 to achieve bidirectional fastening.

[0031] In this embodiment, a through hole 33 is located at the center of the cross-section of the two half-section brush cylinders 2, and passes through the center of the cross-section of the brush roller shaft 1. The axis of the through hole 33 is perpendicular to the axis of the brush roller shaft 1. This arrangement can securely connect the two half-cylinders and the brush shaft at the same time, reduce vibration during rotation, and facilitate disassembly and assembly. Replacing the brush cylinder does not require disassembling additional external parts such as the sprocket 9 or bearing seat 5. It can be separated by simply removing the fixing bolt group 3, which reduces the maintenance and replacement time of the storage tank brush cylinders; avoids brush aging and falling off due to untimely maintenance and replacement, and eliminates quality accidents.

[0032] In this embodiment, the gap of the spiral brush 21 provides an unobstructed operating window, and the vertical design of the through hole 33 ensures that the bolt is subjected to axial force. The disassembly and assembly tools can apply force vertically, improving disassembly and assembly efficiency and bolt shear strength.

[0033] In this embodiment, the axial positioning assembly includes a bearing 4, a bearing seat 5, a bushing 6, and a set screw 7; the bearing 4 is sleeved on the end of the brush roller shaft 1, the bearing seat 5 is fixed to the frame and the bearing 4 is installed in the center of its interior; the bushing 6 is sleeved on the inner side of the brush roller shaft 1, the outer side of the bushing 6 is connected to the bearing 4, and the set screw 7 passes through the bushing 6 and locks the brush roller shaft 1.

[0034] When disassembling or assembling the brush roller shaft 1, simply remove the set screw 7 until it is detached from the brush roller shaft 1, then directly pull out the brush roller shaft 1 and replace it with a new brush roller shaft 1.

[0035] In a further embodiment, the rotary drive assembly includes a flat key 8 and a sprocket 9. The flat key 8 is disposed in the keyway at the end of the brush roller shaft 1, and the sprocket 9 is sleeved on the outer side of the end of the brush roller shaft 1 and connected to the brush roller shaft 1 through the flat key 8.

[0036] In this embodiment, the half-section brush cylinder 2 tobacco storage cabinet belt cleaning device is installed below the storage cabinet belt in the direction of belt running. The chain drives the sprocket 9 to rotate, and the sprocket 9 transmits force to the brush roller shaft 1 through the flat key 8. The rotating brush roller shaft 1 drives the cylindrical body and the spiral brush 21 arranged in a spiral on its surface to rotate through the fixing bolt group 3, thereby cleaning the adhering substances on the belt.

[0037] In this embodiment, the fixing bolt group 3 is composed of a screw 31 and a nut 32. The length of the screw 31 is 2-5mm longer than the diameter of the cylindrical body and the thickness of the nut 32. The length of the screw 31 is used to reserve space for a wrench to avoid interference with the spiral brush 21.

[0038] The chain drives the sprocket 9 to rotate, and the sprocket 9 transmits the torque to the brush roller shaft 1 without loss through the flat key 8; the brush roller shaft 1 drives the semi-section brush cylinder 2 to rotate synchronously through the fixing bolt group 3; the spiral brushes 21 arranged in a spiral on the surface of the semi-section brush cylinder 2 form a seamless cleaning track to thoroughly remove the belt adhering material.

[0039] The bushing 6 abuts against the inner ring of the bearing 4, and the set screw 7 passes through the bushing 6 and is pushed into the groove of the brush roller shaft 1 to lock the bushing 6 axially. When disassembling and assembling the brush roller shaft 1, simply remove the set screw 7 until it is detached from the brush roller shaft 1, and then directly pull out the brush roller shaft 1 and replace it with a new brush roller shaft 1. The fixing bolt group 3 is located in the gap of the spiral brush 21. When the semi-split brush cylinder 2 needs to be disassembled and assembled, the tool can be operated vertically without obstruction. The length of the screw 31 is reserved for wrench space to avoid interference with the brush.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A semi-split brush cylinder tobacco bin belt cleaning apparatus characterized by, include: Brush roller shaft (1), half-section brush cylinder (2) and fixing bolt assembly (3); The half-section brush cylinder (2) is symmetrically arranged on the outside of the brush roller shaft (1). The two symmetrical half-cylinder brush roller shafts (1) are joined together to form a cylindrical body. The surface of the cylindrical body is provided with spiral brushes (21) arranged in a continuous spiral pattern. The fixing bolt group (3) passes through the cylinder wall of the two half-section brush cylinders (2) and the brush roller shaft (1) to rigidly connect the half-section brush cylinders (2) and the brush roller shaft (1). The brush roller shaft (1) is also provided with a rotation drive assembly that transmits torque to the brush roller shaft (1) and an axial positioning assembly that constrains the axial displacement of the brush roller shaft (1) at both ends.

2. A semi-split brush cylinder tobacco bin belt cleaning apparatus as defined in claim 1 wherein: The mounting position of the fixing bolt group (3) is located in the middle of the cross section of the semi-section brush cylinder (2) and in the gap of the spiral brush (21).

3. A semi-split brush cylinder tobacco bin belt cleaning apparatus as defined in claim 1 wherein: The section connecting the brush roller shaft (1) and the semi-sectioned brush cylinder (2) is provided with several radially arranged through holes (33). The axis of the through holes (33) is perpendicular to the axis of the brush roller shaft (1). The fixing bolt group (3) passes through the through holes (33) to achieve bidirectional fastening.

4. A semi-split brush cylinder tobacco bin belt cleaning apparatus as defined in claim 1 wherein: The axial positioning assembly includes a bearing (4), a bearing seat (5), a bushing (6), and a locking screw (7); the bearing (4) is sleeved on the end of the brush roller shaft (1), the bearing seat (5) is fixed to the frame and the bearing (4) is installed in the center of its interior; the bushing (6) is sleeved on the inner side of the brush roller shaft (1), the outer side of the bushing (6) is connected to the bearing (4), and the locking screw (7) passes through the bushing (6) and locks the brush roller shaft (1).

5. A semi-split brush cylinder tobacco bin belt cleaning apparatus as defined in claim 1 wherein: The rotary drive assembly includes a flat key (8) and a sprocket (9). The flat key (8) is disposed in the keyway at the end of the brush roller shaft (1), and the sprocket (9) is sleeved on the outside of the end of the brush roller shaft (1) and connected to the brush roller shaft (1) through the flat key (8).

6. A semi-split brush cylinder tobacco bin belt cleaning apparatus as defined in claim 1 wherein: The fixing bolt group (3) consists of a screw (31) and a nut (32).

7. A semi-split brush cylinder tobacco bin belt cleaning apparatus as defined in claim 6 wherein: The length of the screw (31) is 2-5 mm longer than the diameter of the cylindrical section plus the thickness of the nut (32).

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