Dust-free and bagless high-efficiency crusher

Abstract

The present invention discloses a dust-free and bagless high-efficiency crusher, which includes a prime mover wheel, a material hopper, a discharge hopper, a crushing chamber and a crushing device in the crushing chamber. The characteristics are as follows: An air return box is added between the material hopper and the crushing chamber, and the air return box is communicated with the discharge hopper through a return pipe. The outlet part of the discharge hopper adjusts the size of the outlet through an adjusting device. The structure of the adjusting device is: A cover plate is hinged at the outlet of the discharge hopper through a hinge. The cover plate includes a transverse plate and side plates at the left and right ends. The transverse plate and the side plates wrap the side surface and the top surface of the discharge hopper opening, leaving only the port part. Locking screws are provided on the side plates. After the cover plate adjusts the size of the discharge port, it is locked through the locking screws to keep the size of the discharge hopper opening. The two return pipes are symmetrically distributed on both sides of the feed hopper to avoid affecting the feeding of the original crops. The bottom of the return pipe is communicated with the cavity of the discharge hopper, and its top is communicated with the air return box through a through hole.

Description

Technical Field

[0001] The present invention relates to a crusher, and in particular to a dust-free and bagless high-efficiency crusher. Background Art

[0002] As is well known, the currently well-known claw crusher is a processing machine for crushing grain feed. It mainly consists of a feeding hopper, a crushing chamber, a sieve, a discharging hopper, etc. When processing materials, the raw materials and air enter the crushing chamber through the feeding port together. After the raw materials are crushed by the high-speed rotating claw teeth in the crushing chamber, they pass through the sieve holes and enter the discharging hopper together with the air, and finally the mixture is discharged from the discharging port. In order to prevent the dust at the discharging port from flying everywhere, when the existing claw crusher processes dry materials, a section of cloth bag needs to be put on the discharging port. Putting a cloth bag on the discharging port is not only inconvenient to use, but also affects the air flow in the crushing chamber and reduces the efficiency. (At the beginning of processing, the powder in the cloth bag is less, the exhaust area of the cloth bag is relatively large, and the air is relatively unobstructed, and the efficiency is reduced by 20 - 30%. In the later stage of processing I, the powder in the cloth bag is more, the exhaust area of the cloth bag is getting smaller and smaller, and the air blockage is more serious. At this time, the efficiency is reduced by more than 50%. This data is tested by users in practice).

[0003] In addition, a claw-type bagless high-efficiency crusher has been published, with the patent number CN86201661. It connects the discharging hopper of the existing claw crusher with the feeding port to form an air circulation system, so that the gas flowing out of the crushing chamber is sucked into the crushing chamber for circulation to achieve the effect of no air discharge at the discharging port, thereby achieving the purpose of not using a cloth bag. However, this device has the following defects: 1. The design of the return air channel is narrow and cannot effectively reduce the air pressure in the discharging hopper; 2. The return air pipes are not symmetrically arranged, resulting in disordered air flow and poor circulation when returning air; 3. The design of the discharging port is also unreasonable and cannot effectively block the air, resulting in poor circulation effect. Therefore, there is still a large amount of dust when using this product. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a dust-free and bagless high-efficiency crusher with a simple structure, convenient use, high efficiency, energy saving, and which uses an adjustable discharging port structure to cooperate with the air circulation method to reduce dust emissions, thereby protecting human health. The specific solution is as follows:

[0005] A dust-free and bagless high-efficiency crusher includes a prime mover wheel, a feeding hopper, a discharging hopper, a crushing chamber, and a crushing device in the crushing chamber. It is characterized in that a return air box is added between the feeding hopper and the crushing chamber, and the return air box is connected to the discharging hopper through a return pipe, and the outlet part of the discharging hopper adjusts the size of the outlet through an adjusting device.

[0006] The described crushing device is a claw-type crushing device, which mainly consists of a machine body, a valve, a rotor disc, a toothed disc, a sieve, a pulley, a hopper, etc. When the power wheel drives the pulley to rotate, the high-speed rotating tooth claws collide with the raw materials, thereby achieving the crushing effect.

[0007] The structure of the described adjusting device is as follows: A cover plate is hinged at the outlet of the discharge hopper through a hinge. The cover plate includes a transverse plate and side plates at both left and right ends. The transverse plate and the side plates wrap the side and top of the discharge hopper opening, leaving only the port part. Locking screws are provided on the side plates. After the cover plate adjusts the size of the discharge port, it is locked through the locking screws to maintain the size of the discharge hopper opening.

[0008] There are two return pipes, which are symmetrically distributed on both sides of the air return box to avoid affecting the feeding of the original crops. The bottom of the return pipe is communicated with the cavity of the discharge hopper, and its top is communicated with the air return box through a through hole. The position of the through hole is near the top of the air return box to prevent the crops from directly falling into the discharge hopper through the through hole and the return pipe.

[0009] It can be seen from this technical solution that its principle is that when the raw materials and air enter the crushing chamber through the air return box for crushing processing, the crushed powder and air pass through the sieve holes together and enter the discharge hopper. The heavier crop particles slide down through the outlet at the bottom of the discharge hopper, and the lighter dust together with the air enters the air return box and the crushing chamber through the return pipe for reciprocation.

[0010] As we know, when the crushing device starts to work, due to the centrifugal action generated by the rotation of the claw-type crushing device, the pressure in the air return box decreases and the pressure in the discharge hopper increases. Under such a background, the positive-pressure air in the discharge hopper is very easy to enter the negative-pressure air return box through the return pipe, and a balanced cycle is formed under the rotation of the crusher, avoiding a large amount of dust flowing out through the discharge hopper opening. The purpose of setting the adjusting device at the outlet of the discharge hopper is to control the size of the discharge port according to the feeding speed, processing speed, and discharging speed, so that the discharge port just meets the material sliding speed, and the discharge cross-section is equal to the cross-sectional area of the discharge port, avoiding the discharge port being too large. The advantages are as follows: 1. Avoid the positive-pressure dust gas in the discharge hopper coming out from the discharge port due to the too large discharge port; 2. When the discharge port only meets the sliding of the grains, force the dust gas in the discharge hopper to enter the return pipe for circulation.

[0011] After repeated tests by the applicant, when the size of the discharge port is adjusted to the extent that only the food crops can flow out, the dust air in the discharge hopper will very well enter the air return box through the return pipe, reaching a stable circulation state, and the dust after discharging is reduced by more than 98%. Since there is no need to install any external dust removal equipment (such as cloth bags) at the discharge port, the fluidity is improved and the air resistance is reduced.

[0012] Compared with the existing claw crushers, the crusher of the present invention has the advantages of no dust generation during use, no need for cloth bags, high efficiency, and good energy-saving effect. In particular, the present invention eliminates the cloth bag, solving the long-awaited problem of the majority of users for many years. Now, their long-cherished wish has finally come true, and they also very much hope that this product can be put on the market as soon as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. 1 is a left-side structural schematic diagram of the dust-free and bagless high-efficiency crusher of the present invention;

[0014] Figure 2 FIG. 2 is a front-view structural schematic diagram of the dust-free and bagless high-efficiency crusher of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] Example 1, referring to the attached Figure 1-2 FIGS. 1 and 2, a dust-free and bagless high-efficiency crusher, comprising a prime mover wheel 1, a material hopper 6, a discharge hopper 4, a crushing chamber 3, and a crushing device inside the crushing chamber. The characteristics are as follows: An air return box 7 is added between the material hopper and the crushing chamber, and the air return box is connected to the discharge hopper through a return pipe 8. The outlet part of the discharge hopper is adjusted in size through an adjusting device 5.

[0016] The crushing device is a claw-type crushing device 2, which mainly consists of a machine body, a valve, a rotor disc, a toothed disc, a sieve, a pulley, a hopper, etc. When the power wheel drives the pulley to rotate, the high-speed rotating teeth collide with the raw materials, thereby achieving the crushing effect.

[0017] The structure of the adjusting device is as follows: A cover plate 5-3 is hinged to the outlet of the discharge hopper through a hinge 5-1. The cover plate includes a cross plate and side plates at both left and right ends. The cross plate and the side plates wrap the side surface and the top surface of the discharge hopper opening, leaving only the port part. Locking screws 5-2 are provided on the side plates. After the cover plate adjusts the size of the discharge port, it is locked through the locking screws to maintain the size of the discharge hopper opening.

[0018] There are two return pipes, symmetrically distributed on both sides of the air return box to avoid affecting the feeding of the original crop. The bottom of the return pipe is connected to the cavity of the discharge hopper, and its top is connected to the air return box through a through hole 8-1. The position of the through hole is near the top of the air return box to prevent the crop from directly falling into the discharge hopper through the through hole and the return pipe. The advantage of the symmetrical arrangement is to prevent the disorder of air flow, make the air flow more smooth, and thus achieve a better circulation effect.

Claims

1. A dust-free and bagless high-efficiency crusher, comprising a prime mover wheel (1), a material hopper (6), a discharge hopper (4), a crushing chamber (3), and a crushing device within the crushing chamber. It is characterized in that: An air return box (7) is added between the material hopper and the crushing chamber, and the air return box is connected to the discharge hopper through a return pipe (8). The outlet part of the discharge hopper adjusts the size of the outlet through an adjusting device (5); the structure of the adjusting device is: a cover plate (5-3) is hinged at the outlet of the discharge hopper through a hinge (5-1). The cover plate includes a horizontal plate and side plates at the left and right ends. The horizontal plate and the side plates wrap the side and top of the discharge hopper opening, leaving only the port part. Locking screws (5-2) are provided on the side plates. After the cover plate adjusts the size of the discharge port, it is locked through the locking screws to maintain the size of the discharge hopper opening; The return pipes are two, symmetrically distributed on both sides of the air return box to avoid affecting the feeding of the original crop. The bottom of the return pipe is connected to the cavity of the discharge hopper, and its top is connected to the air return box through a through hole (8-1). The position of the through hole is near the top of the air return box to prevent the crop from directly falling into the discharge hopper through the through hole and the return pipe.

2. A dust-free and bagless high-efficiency crusher according to claim 1, It is characterized in that: The crushing device is a claw-type crushing device (2), which includes a machine body, a valve, a rotor disc, a toothed disc, a sieve, a pulley, and a hopper. When the power wheel drives the pulley to rotate, the high-speed rotating tooth claws collide with the raw materials, thereby achieving the crushing effect.

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