Waste rubber crushing and screening device

Abstract

The utility model discloses a waste rubber crushing and screening device, which relates to the technical field of rubber crushing devices and comprises a support frame, a crushing box mounted at the top end of the support frame, a feeding hopper fixedly mounted at the top end of the crushing box, a discharging hopper fixedly mounted at the bottom end of the crushing box, and an impurity removing and screening mechanism communicated with the bottom end of the discharging hopper. Waste rubber is crushed into rubber particles through the crushing box, the rubber particles are subjected to efficient impurity removal treatment through a belt magnetic separator and a high-pressure air pipe in the impurity removal screening mechanism, impurities in the rubber particles are removed, and then grading treatment is conducted through a screen plate; according to the waste rubber processing device, the impurity removal efficiency in the waste rubber processing process can be effectively improved, the scraper blade is matched with high-pressure airflow to clean the lower surface of the belt conveyor, dust adhesion is effectively reduced, and the cleanliness of rubber is further guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber crushing device technical field, concretely relates to a kind of waste rubber crushing and screening device. BACKGROUND

[0002] Rubber refers to the high-elastic polymer material with reversible deformation, which is elastic at room temperature, can produce large deformation under the action of small external force, and can restore original shape after removing external force. Rubber is divided into natural rubber and synthetic rubber. Natural rubber is processed from gum extracted from rubber trees, rubber grass and other plants; Synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in industry or life.

[0003] Waste rubber products discarded at will can cause environmental pollution, and waste rubber recycling not only can make up for the shortage of rubber raw materials, but also can bring ecological protection, and the recycled waste rubber contains various impurities, including but not limited to dust, stones, metal fragments, etc. At present, rubber crusher is usually used in market to recycle and granulate waste rubber products, and then remove impurities by screening, and then carry out subsequent process. In the existing impurity screening and removing process, not only the work efficiency is low, but also the impurities are not removed completely. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of waste rubber crushing and screening device, to solve the problem of low impurity removal rate and low work efficiency in the above background technology.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a kind of waste rubber crushing and screening device, including support frame, the support frame top end is installed with crushing box, the crushing box top end is fixedly installed with feeding hopper, the crushing box bottom end is fixedly installed with discharge hopper, the discharge hopper bottom end is communicated with the impurity removal screening mechanism, the impurity removal screening mechanism includes box body, and the belt conveyor, belt magnetic separator, high-pressure air pipe and screening assembly arranged in the box body, the belt conveyor is arranged in the box body and is located below discharge hopper, the belt magnetic separator acts on the upper surface of belt conveyor and is vertically arranged relative to belt conveyor, the high-pressure air pipe is arranged below the end of belt conveyor away from discharge hopper, and the high-pressure air pipe is provided with air selection outlet, the belt conveyor is provided with the sludge blocking inclined plate below, the sludge blocking inclined plate lower end extends to the outside of box body and is provided with sludge collecting tank below, the box body bottom is separated into sundry chamber and screening chamber by the vertically arranged partition plate, and the screening assembly is arranged in the screening chamber.

[0006] Further, the length of the belt magnetic separator is greater than the width of the belt conveyor, and one end is located above the sludge collecting tank.

[0007] Further, the screening assembly comprises a sieve plate, a spring, a convex shaft and a motor, the sieve plate is obliquely arranged and is rotationally installed at the inner wall of the box, the upper end of the sieve plate is installed on the side wall of the partition plate through the spring, the convex shaft is rotationally installed between the opposite inner walls of the box and is arranged in cooperation with the sieve plate, the motor is installed on the outer wall of the box and the output end thereof is fixedly connected with one end of the convex shaft penetrating through the box, and the bottom of the box is provided with a small particle discharge port.

[0008] Further, the high-pressure air pipe is provided with an air outlet, the scraper is fixedly connected with the inner wall of the box below the belt conveyor, the top end of the scraper is tightly attached to the lower surface of the belt conveyor, and the air outlet acts on the attachment position of the scraper and the belt conveyor.

[0009] Further, the bottom end of the discharge hopper is provided with a smoothing plate.

[0010] Further, one end of the box is provided with a large particle discharge port.

[0011] The utility model has the following beneficial effects:

[0012] The utility model provides a kind of waste rubber crushing and screening device, the device is smashed into rubber granules by crushing box with waste rubber, and the impurity in the rubber granule is removed by belt magnetic separator and high-pressure air pipe with efficient impurity removal treatment, and then grading treatment is carried out by sieve plate, compact structure can effectively improve the efficiency of impurity removal in waste rubber processing process, and scraper cooperates with high pressure airflow to clean the lower surface of belt conveyor, effectively reduce the adhesion of dust, further ensure the cleanliness of rubber. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0014] Fig. 2 It is the lateral structure schematic diagram of the utility model;

[0015] Fig. 3 It is the structure schematic diagram of high-pressure air pipe in the utility model;

[0016] In the drawing: 1, support frame;2, crushing box;3, box;4, belt conveyor;5, belt magnetic separator;6, high-pressure air pipe;7, pollution blocking inclined plate;8, pollution collection tank;9, partition plate;10, sieve plate;11, spring;12, convex shaft;13, motor;14, small particle discharge port;15, air outlet;16, scraper;17, smoothing plate;18, large particle discharge port. DETAILED DESCRIPTION

[0017] As Figs. 1 to 3As shown, a waste rubber crushing and screening device, including a support frame 1, the support frame 1 top end is installed with a crushing box 2, the crushing box 2 top end is fixedly installed with a feeding hopper, the crushing box 2 bottom end is fixedly installed with a discharge hopper, the discharge hopper bottom end is communicated with a impurity removal and screening mechanism, the impurity removal and screening mechanism includes a box body 3, and a belt conveyor 4, a belt magnetic separator 5, a high-pressure air pipe 6 and a screening assembly arranged in the box body 3, the belt conveyor 5 is arranged in the box body 3 and below the discharge hopper, the belt magnetic separator 5 is arranged on the upper surface of the belt conveyor 4 and perpendicular to the belt conveyor 4, and the belt magnetic separator 5 is used for magnetically selecting the rubber particles, so that the magnetic impurities are effectively removed; the discharge hopper bottom end is provided with a smoothing plate 17, the smoothing plate 17 can limit the height of the rubber particles entering the area below the belt magnetic separator 5, so as to avoid affecting the magnetic selection effect due to the excessive thickness.

[0018] The high-pressure air pipe 6 is arranged below the end of the belt conveyor away from the discharge hopper, one side of the high-pressure air pipe 6 is provided with an air selection outlet, the other side is provided with an air outlet 15, the belt conveyor 4 is provided below with a scraper 16 fixedly connected with the inner wall of the box body 3, the top end of the scraper 16 is tightly attached to the lower surface of the belt conveyor 4, and the air outlet 15 is arranged at the attachment position of the scraper 16 and the belt conveyor 4; the high-pressure air pipe 6 is supplied with compressed gas from an external gas source, the belt conveyor 4 is provided below with a dirt blocking inclined plate 7, the lower end of the dirt blocking inclined plate 7 extends to the outside of the box body 3 and is provided below with a dirt collecting tank 8; the high-pressure air pipe 6 can effectively remove dust on the belt conveyor 4 under the cooperation of the scraper 16, ensure the cleanliness of the belt conveyor 4, and make the dust fall into the dirt collecting tank 8 through the dirt blocking inclined plate 7.

[0019] The bottom of the box body 3 is divided into a impurity cavity and a screening cavity by a vertical partition plate 9, and the screening assembly is arranged in the screening cavity; the rubber particles after magnetic selection fall from the belt conveyor 4 and are air selected by the gas blown out from the air selection outlet of the high-pressure air pipe 6, the rubber particles with large quality fall on the screening assembly, and the impurities with small quality are blown to the impurity cavity.

[0020] The length of the belt magnetic separator 5 is greater than the width of the belt conveyor 4 and one end is above the dirt collecting tank 8;

[0021] The screening assembly comprises a sieve plate 10, a spring 11, a convex shaft 12 and a motor 13, the sieve plate 10 is arranged obliquely and the lower end is rotatably installed on the inner wall of the box body 3, the upper end of the sieve plate 10 is installed on one side wall of the partition plate 9 through the spring 11, the convex shaft 12 is rotatably installed between the opposite inner walls of the box body 3 and is arranged in cooperation with the sieve plate 10, the motor 13 is installed on the outer wall of the box body 3 and the output end is fixedly connected with one end of the convex shaft 12 through the box body 3, the bottom of the box body 3 is provided with a small particle discharge port 14, and one end of the box body 3 is provided with a large particle discharge port 18; the rubber particles falling on the sieve plate 10 are subjected to vibration screening, after classification, the large rubber particles are discharged through the large particle discharge port 18, and the small rubber particles fall into the bottom of the box body 3 and are discharged along the small particle discharge port 14, so that the impurities of the broken waste rubber are removed and classified.

[0022] The specific operation process of the utility model is as follows:

[0023] The recycled waste rubber is put into the crushing box 2 along the feeding hopper and crushed, the crushed rubber particles fall into the belt conveyor 4 along the discharge hopper, the rubber particles are flattened through the flattening plate 17, so that the thickness of the rubber particles reaching the area below the belt magnetic separator 5 is basically uniform, the belt magnetic separator 5 performs magnetic separation and impurity removal treatment, the magnetic impurities are adsorbed by the belt magnetic separator 5 and moved to the above of the dirt collecting tank 8, fall into the inside of the dirt collecting tank 8 after falling off, the rubber particles subjected to magnetic separation fall from the belt conveyor 4, the gas blown out of the air outlet of the high-pressure air pipe 6 is subjected to air separation, the rubber particles with large quality fall on the sieve plate 10, and the impurities with small quality are blown to the dirt cavity, the high-pressure airflow blown out of the air outlet 15 sweeps the area below the belt conveyor 4, cooperates with the scraper 16 to clean, ensures that the surface of the belt conveyor 4 is clean, reduces the burden of impurity removal, and the cleaned impurities are collected into the dirt collecting tank 8 through the dirt blocking inclined plate 7. The rubber particles falling on the sieve plate 10 are subjected to vibration screening and classification, the large rubber particles are conveyed through the second belt conveyor 10, and the small rice particles fall into the guide hopper 11, the large rubber particles are discharged through the large particle discharge port 18, and the small rubber particles fall into the bottom of the box body 3 and are discharged along the small particle discharge port 14.

Claims

1. A waste rubber crushing and screening device, comprising a support frame (1), a crushing box (2) is installed at the top end of the support frame (1), an upper hopper is fixedly installed at the top end of the crushing box (2), and a discharge hopper is fixedly installed at the bottom end of the crushing box (2), characterized in that, The bottom end of the discharge hopper is communicated with a foreign matter removing and screening mechanism, which comprises a box body (3), a belt conveyor (4), a belt magnetic separator (5), a high-pressure air pipe (6) and a screening assembly arranged in the box body (3), the belt conveyor (4) is arranged in the box body (3) below the discharge hopper, the belt magnetic separator (5) is arranged on the upper surface of the belt conveyor (4) and vertically relative to the belt conveyor (4), the high-pressure air pipe (6) is arranged below the end of the belt conveyor away from the discharge hopper, and the high-pressure air pipe (6) is provided with an air outlet, the belt conveyor (4) is provided with a dirt blocking inclined plate (7) below, the lower end of the dirt blocking inclined plate (7) extends to the outside of the box body (3), and a dirt collecting tank (8) is arranged below, the bottom of the box body (3) is divided into a foreign matter cavity and a screening cavity by a vertically arranged partition plate (9), and the screening assembly is arranged in the screening cavity.

2. The waste rubber shredding and screening device according to claim 1, characterized in that, The length of the belt magnetic separator (5) is greater than the width of the belt conveyor (4), and one end is located above the dirt collecting tank (8).

3. The waste rubber shredding and screening device according to claim 1, characterized in that, The screening assembly comprises a screen plate (10), a spring (11), a convex shaft (12) and a motor (13), the screen plate (10) is arranged obliquely and is rotatably installed on the inner wall of the box body (3), the upper end of the screen plate (10) is installed on one side wall of the partition plate (9) through the spring (11), the convex shaft (12) is rotatably installed between the opposite two inner walls of the box body (3) and is arranged in cooperation with the screen plate (10), and the motor (13) is installed on the outer wall of the box body (3) and is fixedly connected with one end of the convex shaft (12) through the box body (3), and the bottom of the box body (3) is provided with a small particle discharge port (14).

4. The waste rubber shredding and screening device according to claim 1, characterized in that, The high-pressure air pipe (6) is provided with an air outlet (15), the belt conveyor (4) is provided with a scraper (16) fixedly connected with the inner wall of the box body (3) below, the top end of the scraper (16) is closely attached to the lower surface of the belt conveyor (4), and the air outlet (15) is arranged at the attachment position of the scraper (16) and the belt conveyor (4).

5. The device for shredding and screening waste rubber according to claim 1, characterized in that, The bottom end of the discharge hopper is provided with a smoothing plate (17).

6. The waste rubber shredding and screening device according to claim 1, wherein, One end of the box body (3) is provided with a large particle discharge port (18).

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