Hand-operated eccentric friction wheel driven rubber fiber screening device

Abstract

The utility model discloses a hand-operated eccentric friction wheel driven rubber fiber screening device which comprises a machine frame device, a hand-operated driving device, a screening movement device and a circular ring material containing disc. According to the rubber fiber screening device driven by the hand-cranking eccentric friction wheels, the pair of eccentric friction wheels and the annular friction strip of the screening movement device are driven by the hand-cranking disc to sequentially conduct friction in the opposite directions, so that continuous reversing rotation of the screen is achieved, and rubber fibers and rubber particles recycled from waste tires are screened by the screen; the structure is simple and compact, and the working efficiency is high. The application prospect in the field of waste tire material recovery is wide.

Description

Technical Field

[0001] This utility model relates to a screening device, and more particularly to a hand-cranked eccentric friction wheel driven rubber fiber screening device. Background Technology

[0002] Currently, my country has a huge number of cars, and the proportion of new energy vehicles is gradually increasing. The increased weight of new energy vehicles further increases the rate of tire consumption, accelerating the increase in waste tire production, and putting my country under enormous pressure to process waste tires. Recycling waste tire rubber into rubber fibers is an important method of waste tire recycling. However, due to process issues during grinding, the resulting rubber fibers contain a certain amount of rubber particles, which differ from the elongated geometric shape of rubber fibers. This can have adverse effects when used as a fiber reinforcement material in other products. Therefore, it is necessary to use a screening device to separate the rubber particles from the recycled waste tire rubber fibers. Traditional screening devices are generally manually operated, vibrating screens. While they are effective at screening particles of different sizes, they are not specifically designed to address the differences in geometric characteristics between recycled waste tire rubber fibers and rubber particles, resulting in poor screening efficiency for rubber fibers. Therefore, it is necessary to design a device that achieves efficient screening of recycled waste tire rubber fibers by using a circular reciprocating motion within a plane, based on the differences in the geometric properties of rubber fibers and particles. Summary of the Invention

[0003] To achieve the above objectives, this utility model discloses a screening device specifically designed for recycling rubber fibers from waste tires, which utilizes reciprocating circular motion within a plane. It has the advantages of simple and compact structure, good screening effect, and convenient operation.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A hand-cranked eccentric friction wheel driven rubber fiber screening device, characterized in that it comprises: a frame assembly, a hand-cranked drive device, a screening motion device, and an annular feeding tray; the hand-cranked drive device is placed in a hole on the frame assembly, and the screening motion device is installed on the frame assembly through a clearance fit with a column hole; the frame assembly includes a base plate, a cylindrical base, and a shaft groove; the hand-cranked drive device includes a long shaft, a hand-cranked disc, and an eccentric friction wheel, the long shaft is clearance fit installed in the shaft groove and passes through two through holes in the base plate, the hand-cranked disc is keyed to the end of the long shaft, and the eccentric friction wheel is a pair of elastic eccentric wheels made of silicone material, the pair of eccentric friction wheels are keyed to an appropriate position on the long shaft with a 180-degree angle difference; the screening motion device includes a limiting cylinder stepped disc and an annular friction strip, the limiting cylinder stepped disc being... The stepped cylindrical plate is a double-layer cylindrical structure. The long axis passes through the transverse groove at the bottom of the stepped cylindrical plate to provide a limiting function. The stepped cylindrical plate and the cylindrical bottom are installed with a clearance fit. The annular friction strip is a toothed annular silicone strip and is fastened to the bottom of the large plate of the stepped cylindrical plate. The eccentric friction wheel is installed at a suitable position along the axial direction of the long axis to ensure that it can contact the annular friction strip during rotation. The top surface of the base plate contacts the bottom surface of the stepped cylindrical plate to provide support and ensure that the eccentric friction wheel and the annular friction strip are in perfect contact at the same height. The circular feeding plate is a disc-shaped structure with a screen at the bottom, a circular obstacle in the middle, and insert plates on both sides. The circular feeding plate is placed on the screening motion device and is installed with the rail of the stepped cylindrical plate with a clearance fit through the insert plates.

[0006] Due to the adoption of the above technical solutions, the advantages of this utility model are as follows:

[0007] 1. By using a hand-cranked disc to drive a pair of eccentric friction wheels to rub against the annular friction strip of the screening motion device in opposite directions, the screen can be continuously rotated in opposite directions, so that the waste tire recycled rubber fibers and rubber granules are screened by the screen. It has the advantages of simple and compact structure and high screening efficiency. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of a hand-cranked eccentric friction wheel driven rubber fiber screening device according to the present invention;

[0009] Figure 2 This is a structural diagram of the frame of a hand-cranked eccentric friction wheel driven rubber fiber screening device according to this utility model.

[0010] Figure 3 This is a structural diagram of the hand-cranked eccentric friction wheel driven rubber fiber screening device of this utility model;

[0011] Figure 4This is a structural diagram of the screening motion device of a hand-cranked eccentric friction wheel driven rubber fiber screening device according to this utility model;

[0012] In the figure: 1-Frame device, 2-Hand-crank drive device, 3-Screening motion device, 4-Circular feeding tray, 11-Base plate, 12-Cylindrical bottom, 13-Shaft groove, 21-Long shaft, 22-Hand-crank disc, 23-Eccentric friction wheel, 31-Limiting cylinder stepped disc, 32-Circular friction strip. Detailed Implementation

[0013] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit this utility model.

[0014] like Figure 1 , 2 As shown in Figures 3 and 4, a hand-cranked eccentric friction wheel driven rubber fiber screening device is characterized by comprising: a frame device 1, a hand-cranked drive device 2, a screening motion device 3, and an annular feeding tray 4; the hand-cranked drive device 2 is placed on a hole in the frame device 1, and the screening motion device 3 is installed with the frame device 1 through a clearance fit via a column hole; the frame device 1 includes a base plate 11, a cylindrical base 12, and a shaft groove 13; the hand-cranked drive device 2 includes a long shaft 21, a hand-cranked disc 22, and an eccentric friction wheel 23, the long shaft 21 is clearance fit installed in the shaft groove 13 and passes through two through holes in the base plate 11, the hand-cranked disc 22 is keyed and installed at the end of the long shaft 21, and the eccentric friction wheel 23 is a pair of eccentric wheels with good elasticity made of silicone material, the pair of eccentric friction wheels 23 are keyed and installed at appropriate positions on the long shaft 21 with a 180-degree angle difference; the screening motion device 3 includes a limiting cylinder stepped disc 31 and an annular friction wheel 4. The friction strip 32 and the limiting cylinder stepped plate 31 are double-layer cylindrical structures. The long shaft 21 passes through the transverse groove at the bottom of the limiting cylinder stepped plate 31 to play a limiting role. The limiting cylinder stepped plate 31 and the cylindrical bottom 12 are installed with a clearance fit. The annular friction strip 32 is a toothed annular silicone strip and is fastened to the bottom of the large plate of the limiting cylinder stepped plate 31. The installation position of the eccentric friction wheel 23 needs to be selected in a suitable position on the axial direction of the long shaft 21 to ensure that it can contact the annular friction strip 32 during rotation. The top surface of the bottom plate 11 contacts the bottom surface of the limiting cylinder stepped plate 31 to achieve the purpose of support and ensure that the eccentric friction wheel 23 and the annular friction strip 32 are in just contact in height. The circular feeding plate 4 is a disc-shaped structure with a screen at the bottom, a circular obstacle in the middle, and insert plates on both sides. The circular feeding plate 4 is placed on the screening motion device 3 and is installed with the limiting cylinder stepped plate 31 with a clearance fit through the insert plates.

[0015] like Figure 1 , 2As shown in Figures 3 and 4, the specific steps of the working method of the hand-cranked eccentric friction wheel driven rubber fiber screening device of this utility model are as follows:

[0016] After installation according to the requirements, rubber fibers mixed with rubber granules are added to the annular feeding tray 4. The hand-cranked disc 22 is continuously rotated so that one of the eccentric friction wheels 23 first contacts the annular friction strip 32. This friction then drives the screening motion device 3 and the annular feeding tray 4 to rotate in the initial direction. Simultaneously, as the hand-cranked disc 22 continues to rotate, the other eccentric friction wheel 23 contacts the annular friction strip 32 again, and this friction then drives the screening motion device 3 and the annular feeding tray 4 to rotate in the opposite direction to the initial direction. During this rotation, the screening motion device 3... After a certain degree, the rotation stops due to a limiting interference with the long axis 21. The timing of the limiting interference causing the rotation to stop is when the eccentric friction wheel 23 is not in contact with the annular friction strip 32 at the same time, which helps the screening motion device 3 and the circular feeding tray 4 to quickly complete the rotation reversal. This allows the rubber fibers and rubber particles in the circular feeding tray 4 to roll on the screen at the same time. Since the axis of the rubber fibers is parallel to the plane of the screen during the rolling process, they will not pass through the screen and will remain in the circular feeding tray 4. However, the rubber particles will pass through the screen and leak into the screening motion device 3 during the rolling process. Therefore, the screening of rubber fibers and rubber particles from waste tire recycling is achieved.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hand-cranked eccentric friction wheel driven rubber fiber screening device, characterized in that, include: The machine includes a frame assembly (1), a hand-cranked drive device (2), a screening motion device (3), and a circular feeding tray (4). The hand-cranked drive device (2) is placed on the hole of the frame assembly (1), and the screening motion device (3) is installed with the frame assembly (1) through a clearance fit with the column hole. The frame assembly (1) includes a base plate (11), a cylindrical base (12), and a shaft groove (13). The hand-cranked drive device (2) includes a long shaft (21), a hand crank (22), and an eccentric friction wheel (23). The clearance fit is installed in the shaft groove (13) and passes through the two through holes of the base plate (11). The hand crank (22) is installed at the end of the long shaft (21) by a key connection. The eccentric friction wheel (23) is a pair of eccentric wheels with good elasticity made of silicone material. The pair of eccentric friction wheels (23) are installed at appropriate positions on the long shaft (21) by a key connection with an angle difference of 180 degrees. The screening motion device (3) includes a limiting cylinder stepped plate (31) and an annular friction strip (32). The limiting cylinder The stepped plate (31) is a double-layer cylindrical structure. The long shaft (21) passes through the transverse groove at the bottom of the limiting cylinder stepped plate (31) to play a limiting role. The limiting cylinder stepped plate (31) and the cylindrical bottom (12) are installed with a clearance fit. The annular friction strip (32) is a toothed annular silicone strip and is fastened to the bottom of the large plate of the limiting cylinder stepped plate (31). The installation position of the eccentric friction wheel (23) needs to be selected in a suitable position on the axial direction of the long shaft (21) to ensure that it can contact the annular friction wheel during rotation. The eccentric friction wheel (23) and the annular friction strip (32) are in contact with the bottom surface of the base plate (11) and the bottom surface of the limiting cylinder stepped plate (31) to achieve the purpose of support and ensure that the eccentric friction wheel (23) and the annular friction strip (32) are in just contact in height; the annular feeding plate (4) is a disc-shaped structure with a screen at the bottom, an annular obstacle in the middle, and insert plates on both sides. The annular feeding plate (4) is placed on the screening motion device (3) and is installed with the rail of the limiting cylinder stepped plate (31) through clearance fit by insert plates.

Images