Feeding device for fine crushing of waste tires

Abstract

The utility model discloses a feeding device for fine crushing of waste tires, which is arranged at the top of a fine crusher and comprises a feeding cylinder vertically arranged in a penetrating manner, a feeding shaft coaxially arranged is mounted in the feeding cylinder, and a rotary connecting mechanism is arranged between the upper end of the feeding shaft and the upper part of the feeding cylinder; a side feeding opening is formed in the position, located below the rotary connecting mechanism, of the feeding barrel, and a storage hopper is fixedly arranged at the side feeding opening; a spiral feeding blade is fixedly arranged on the portion, located below the side feeding port, of the feeding shaft, and an anti-abrasion gap is formed between the spiral feeding blade and the feeding cylinder. And the feeding shaft is connected with a feeding driver. The feeding device is good in feeding sealing performance, good in feeding uniformity and favorable for reducing the energy consumption of the fine crusher.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing machinery, in particular to a feeding device for crushing waste tires. Background Art

[0002] Waste tires are discarded from vehicles due to wear and tear or aging. They include not only large tires from cars and trucks, but also smaller tires from common two- and three-wheeled electric vehicles. Waste tires primarily contain rubber, and recycling the rubber from these tires is a crucial measure to alleviate the shortage of natural rubber resources and reduce pollution. Crushing waste tires into a velvet or powder form is a crucial step in purifying rubber resources and enabling subsequent recycling. This process typically begins with coarse crushing of the tires into granules before feeding them to a fine crusher. These crushers primarily utilize rotating moving blades that continuously cut the tire particles together with stationary blades. This crushing process generates significant heat, dust, and exhaust gases. Currently, these crushers primarily use a dump feed method, as exemplified by the invention patent application "A Rubber and Plastic Crusher," published under publication number CN110935532A. However, this type of feeding is mainly batch feeding, and the feeding process is uneven. The power of the moving and fixed knives in the machine fluctuates greatly, and it is difficult to achieve an ideal efficiency match between feeding and crushing, resulting in high energy consumption of the crusher. Moreover, this type of feeding is to feed tire particles after opening the bin door. The flying dust and exhaust gas in the machine can easily escape through the gaps in the bin door, posing a certain risk of pollution. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a feeding device for crushing waste tires, which has good feeding sealing and feeding uniformity and is conducive to reducing the energy consumption of the crusher.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a feeding device for fine crushing of waste tires is arranged at the top of the fine crusher, comprising a feed barrel arranged vertically through, a coaxially arranged feed shaft is installed in the feed barrel, and a rotating connection mechanism is provided between the upper end of the feed shaft and the upper part of the feed barrel; a side feed port is provided on the feed barrel below the rotating connection mechanism, and a storage hopper is fixed at the side feed port; a spiral feed blade is fixed on the part of the feed shaft below the side feed port, and an anti-wear gap is provided between the spiral feed blade and the feed barrel; the feed shaft is connected to a feed driver.

[0005] As a preferred technical solution, the feeding cylinder includes a cylindrical section vertically penetrating through the top of the machine body. An inferior arc section coaxially arranged with the cylindrical section is integrally provided on the top end surface of the cylindrical section. A rotating connecting plate is fixedly provided at the upper inner side of the inferior arc section. A rotating connecting mechanism is arranged between the feeding shaft and the rotating connecting plate. The opening corresponding to the inferior arc section between the rotating connecting mechanism and the cylindrical section forms the side feeding port.

[0006] As a preferred technical solution, a driving connecting plate located outside the inferior arc section is fixedly provided on the rotating connecting plate. The feeding driver is installed on the driving connecting plate. A chain drive is arranged between the driving end of the feeding driver and the upper end of the feeding shaft.

[0007] As a preferred technical solution, the feeding shaft extends downward out of the feeding cylinder, and the lower end of the spiral feeding blade is lower than the inner end of the feeding cylinder.

[0008] As a preferred technical solution, the pitch of the spiral feeding blade gradually decreases from top to bottom.

[0009] Due to the adoption of the above technical solution, the feeding device for shredding waste tires is arranged at the top of the shredder and includes a vertically penetrating feeding cylinder. A feeding shaft arranged coaxially is installed in the feeding cylinder. A rotating connecting mechanism is arranged between the upper end of the feeding shaft and the upper part of the feeding cylinder; a side feeding port is arranged below the rotating connecting mechanism on the feeding cylinder, and a storage hopper is fixedly arranged at the side feeding port; a spiral feeding blade is fixedly arranged on the part of the feeding shaft below the side feeding port, and an anti-wear gap is arranged between the spiral feeding blade and the feeding cylinder; the feeding shaft is connected with a feeding driver. The feeding of the present invention is arranged as a top-mounted spiral feeding. A spiral channel is formed between the spiral feeding blade and the feeding cylinder. The spiral feeding blade and the space above it can both form a stacking and sealing effect. The flying dust and waste gas in the machine are not easily dissipated through the feeding channel, and the feeding sealing performance is good. After the feeding shaft is driven to rotate, a uniform and continuous pushing of the tire particles can be formed, and the feeding uniformity is good. It is easy to maintain a fixed volume of materials in the machine for stable crushing operation, which is beneficial to reducing the energy consumption of the shredder. In addition, the top-mounted feeding method facilitates taking advantage of the self-gravity of the materials, and the power requirement for pushing the feeding shaft is low; the friction between the tire particles and the cylinder wall is small, and the feeding process is less affected by frictional heat, which further helps to reduce the dissipation of waste gas. Description of the Drawings

[0010] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0011] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0012] Figure 2 is Figure 1 a top view structural schematic diagram;

[0013] Figure 3 is a structural schematic diagram of the embodiment of the present utility model when used on a fine crusher.

[0014] In the figure: 1 - fine crusher; 11 - machine top; 12 - fine crushing space; 2 - feed cylinder; 21 - side feed inlet; 22 - storage hopper; 23 - cylindrical section; 24 - inferior arc section; 3 - feed shaft; 31 - rotating connection mechanism; 32 - spiral feed blade; 33 - rotating connecting plate; 4 - feed driver; 41 - driving connecting plate; 42 - connecting bolt; 43 - fastening nut. Specific embodiments

[0015] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the accompanying drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims.

[0016] As Figure 1 , Figure 2 and Figure 3 collectively shown, the feeding device for shredding waste vehicle tires is arranged at the machine top 11 of the fine crusher 1 and includes a vertically penetrating feed cylinder 2. Of course, after this penetrating arrangement, the feed cylinder 2 is communicated with the internal fine crushing space 12 of the fine crusher 1. A coaxially arranged feed shaft 3 is installed in the feed cylinder 2. A rotating connection mechanism 31 is provided between the upper end of the feed shaft 3 and the upper part of the feed cylinder 2, and the rotatability of the feed shaft 3 in the feed cylinder 2 is realized through the rotating connection mechanism 31. Conventionally, the rotating connection mechanism 31 can be realized by using bearings or the like. The feed shaft 3 is connected with a feed driver 4 to provide feed driving power.

[0017] A side feed inlet 21 is provided on the feed cylinder 2 below the rotating connection mechanism 31, and a storage hopper 22 is fixedly arranged at the side feed inlet 21. The storage hopper 22 temporarily stores the pellet materials coarsely crushed upstream, and the pellet materials flow into the side feed inlet 21 by relying on their own fluidity in the storage hopper 22.

[0018] A spiral feed blade 32 is fixedly provided on the portion of the feed shaft 3 below the side feed port 21, forming a spiral channel between the spiral feed blade 32 and the feed barrel 2. The arrangement of the spiral feed blade 32 below the side feed port 21 allows the tire granules in the storage hopper 22 to easily fill the upper space of the spiral feed blade 32 due to their own fluidity. This not only achieves a good stacking and sealing effect, but also allows the tire granules to easily fill the spiral channel when the feed shaft 3 rotates, i.e., when the spiral feed blade 32 pushes, to be fed into the machine, thus facilitating uniform feeding control. Due to the high surface friction coefficient of rubber particles such as tire granules, the tire granules in this spiral channel are not prone to self-flow, thus forming a stacking and sealing effect in the channel, and providing a good overall anti-flying dust and exhaust gas emission effect at the feed channel.

[0019] Preferably, the pitch of the spiral feeding blade 32 is gradually reduced from top to bottom, thereby the cross-sectional area of the spiral channel between the spiral feeding blade 32 and the feeding barrel 2 is also gradually reduced. This gradually reducing setting further promotes the formation of material accumulation in the feeding channel, further improving the effect of preventing the escape of flying dust and exhaust gas.

[0020] An anti-wear gap is provided between the spiral feeding blade 32 and the feeding barrel 2. This anti-wear gap prevents the spiral feeding blade 32 from frictionally contacting the wall of the feeding barrel 2 when feeding and pushing the material. Therefore, there is basically no self-friction heat. The tire particle material is not affected by high temperature during the feeding process, so no exhaust gas is generated due to high temperature, further reducing exhaust gas escape. Of course, the anti-wear gap should be set smaller than the tire particle size. In order to ensure the maintenance of the anti-wear gap during the feeding process, the rotating connection mechanism 31 should use at least two-point bearing connection to stabilize the axis of the feeding shaft 3. This is easily derived by those skilled in the art based on conventional bearing technology knowledge and will not be elaborated here.

[0021] More specifically, the feeding cylinder 2 in this embodiment includes a cylindrical section 23 vertically penetrating and arranged at the top of the machine 11. An inferior arc section 24 coaxially arranged with the cylindrical section 23 is integrally provided on the top end surface of the cylindrical section 23. The inferior arc section 24 can be formed by cutting off the cylindrical wall in the superior arc range at the upper section of the feeding cylinder 2. A rotating connecting plate 33 is fixedly provided at the inner side of the upper part of the inferior arc section 24. A rotating connecting mechanism 31 is arranged between the feeding shaft 3 and the rotating connecting plate 33. The opening corresponding to the inferior arc section 24 between the rotating connecting mechanism 31 and the cylindrical section 23 constitutes the side feeding port 21. This embodiment relies on the setting of the inferior arc section 24. On the one hand, it provides a layout space for the rotating connecting mechanism 31. On the other hand, it makes the space at the side feeding port 21 more open, promoting the smooth flow of the pellet materials to the upper end of the spiral feeding blade 32, and further facilitating the control of uniform feeding volume.

[0022] Preferably, a driving connecting plate 41 located outside the inferior arc section 24 is fixedly provided on the rotating connecting plate 33. The feeding driver 4 is installed on the driving connecting plate 41. The driving end of the feeding driver 4 and the upper end of the feeding shaft 3 are in chain drive. Based on the setting that only the inferior arc section 24 exists in the upper section of the feeding cylinder 2 in this embodiment, the feeding driver 4 is arranged outside the inferior arc section 24. The overall of the feeding driver 4, the rotating connecting mechanism 31, the feeding shaft 3, etc. approximately forms a balance of gravitational torque, which can significantly reduce the radial runout of the feeding shaft 3 during the feeding process and is beneficial to stable and reliable feeding.

[0023] Preferably, at least three connecting bolts 42 are fixedly provided on the driving connecting plate 41. The rotating connecting plate 33 is provided with connecting through holes corresponding to the connecting bolts 42 one by one. The connecting bolts 42 are arranged through the corresponding connecting through holes; fastening nuts 43 are respectively installed at both ends of the connecting bolts 42 located at the corresponding connecting through holes. Through the connection of these multiple bolts, the distance between the driving connecting plate 41 and the inferior arc section 24 can be adjusted, which is beneficial to adjusting the gravitational torque of the feeding driver 4 and further facilitating the adjustment and control of the stable and reliable feeding of the feeding shaft 3.

[0024] Preferably, the feeding shaft 3 extends downward out of the feeding cylinder 2. The lower end of the spiral feeding blade 32 is lower than the inner end of the feeding cylinder 2. Thus, at the lower end of the spiral feeding blade 32, due to the absence of the restriction of the cylinder wall of the feeding cylinder 2, the pellet materials pushed in by the spiral feeding blade 32 will form a sprinkling effect at the lower end of the spiral feeding blade 32, which is beneficial to evenly sprinkling the pellet materials in a larger internal fine crushing space 12 and is beneficial to quickly forming fine crushing treatment.

[0025] The feeding of this embodiment is set as top-mounted spiral feeding. A spiral channel is formed between the spiral feeding blade 32 and the feeding cylinder 2. The spiral feeding blade 32 and its upper space can both form a stacking and sealing effect, so that the flying dust and waste gas in the machine are not easily dissipated through the feeding channel, and the feeding sealing performance is good. After the feeding shaft 3 is driven to rotate, it can continuously push the tire granule materials evenly. The feeding uniformity is good, and it is easy to maintain a fixed volume of materials in the machine for stable crushing operation, which is beneficial to reducing the energy consumption of the fine crusher 1. In addition, the top-mounted feeding method facilitates taking advantage of the self-gravity of the materials, and the power requirement for pushing the feeding shaft 3 is low; there is less friction between the tire granules and the cylinder wall, and the feeding process is less affected by frictional heat, which further helps to reduce the dissipation of waste gas.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding device for shredding waste vehicle tires, which is arranged at the top of a shredder, and is characterized in that: It includes a feed cylinder vertically penetratingly arranged, a feed shaft coaxially arranged is installed in the feed cylinder, and a rotating connection mechanism is arranged between the upper end of the feed shaft and the upper part of the feed cylinder; a side feed port is arranged on the feed cylinder below the rotating connection mechanism, and a storage hopper is fixedly arranged at the side feed port; a spiral feed blade is fixedly arranged on the part of the feed shaft below the side feed port, and an anti-wear gap is arranged between the spiral feed blade and the feed cylinder; the feed shaft is connected with a feed driver.

2. The feeding device for crushing waste vehicle tires according to claim 1, wherein: The feed cylinder includes a cylindrical section vertically penetratingly arranged at the top of the machine, a minor arc section coaxially arranged with the cylindrical section is integrally arranged on the top end surface of the cylindrical section, a rotating connection plate is fixedly arranged at the inner side of the upper part of the minor arc section, the rotating connection mechanism is arranged between the feed shaft and the rotating connection plate, and the opening corresponding to the minor arc section between the rotating connection mechanism and the cylindrical section forms the side feed port.

3. The feeding device for crushing waste vehicle tires according to claim 2, characterized in that: A driving connection plate located outside the minor arc section is fixedly arranged on the rotating connection plate, the feed driver is installed on the driving connection plate, and a chain drive is arranged between the driving end of the feed driver and the upper end of the feed shaft.

4. The feeding device for finely crushing waste vehicle tires according to claim 1, wherein: The feed shaft extends downward out of the feed cylinder, and the lower end of the spiral feed blade is lower than the inner end of the feed cylinder.

5. The feeding device for crushing waste vehicle tires according to claim 1, characterized in that: The pitch of the spiral feed blade is gradually decreased from top to bottom.

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