CN102631988B - Magnetic-field air-separating device - Google Patents

Abstract

The invention relates to a magnetic field winnowing device, comprising a frame, on which a winnowing bin is arranged, and the winnowing bin includes an upper cylinder, a lower cylinder and a flange connecting the upper cylinder and the lower cylinder, the upper cylinder The outer wall of the cylinder is provided with a feed pipe, the feed pipe extends into the wind separation bin, the bottom of the lower cylinder is the discharge port, the top of the upper cylinder is provided with a fan, and the suction port of the fan is located inside the wind selection bin. The air outlet of the fan is located outside the upper cylinder, and a spoiler plate perpendicular to the axial direction of the winnowing bin is arranged in the winnowing bin. ring. The invention is suitable for separating waste plastics from other impurities.

Description

Magnetic field winnowing device

technical field

The invention relates to the field of recycling plastics, in particular to a magnetic field winnowing device for separating waste plastics from other impurities.

Background technique

When recycling plastic bottles such as mineral water bottles and other plastic products, it is generally necessary to crush them into pieces first. During the crushing process, some impurities that are not required for subsequent processes will appear, such as labels, paper scraps and dust. The traditional manual separation method takes a long time, the labor intensity of the workers is high, and the production efficiency is low. At present, most of the wind separation devices produced in China have a structure including a frame, a wind separation room installed above the frame, and a suction device connected with a suction fan through a suction pipe on the top of the wind separation room. The upper side of the selection room is provided with a feed hopper connected to the winnowing room through a feed pipe, and the bottom of the winnowing room is provided with a discharge hopper. Waste plastics and impurities are relatively concentrated in the sorting chamber and cannot be dispersed evenly, resulting in the impurities not being fully separated; at the same time, in the feeding hopper and the feeding pipeline, plastics and impurities rub against each other to generate electrostatic force, and impurities adhere to the plastic The impurities on the fragments and the impurities attached to the plastic fragments go out from the winnowing chamber directly, which further reduces the effect of impurity separation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a magnetic field winnowing device with better impurity separation effect.

In order to solve the above-mentioned problems, the technical solution adopted in the present invention is: the magnetic field winnowing device includes a frame, and the winnowing bin is arranged on the rack, and the winnowing bin includes an upper cylinder body, a lower cylinder body and a connecting upper cylinder body and a lower cylinder body. The flange of the upper cylinder is provided with a feed pipe on the outer wall of the upper cylinder, and the feed pipe extends into the inside of the winnowing bin. The bottom of the lower cylinder is the discharge port, and the top of the upper cylinder is provided with a fan. The air suction port is located inside the winnowing bin, and the air outlet of the fan is located outside the upper cylinder. A spoiler plate perpendicular to the axial direction of the winnowing bin is set in the winnowing bin, and the spoiler is movably arranged on the flange. The bottom end of the material pipeline is provided with a magnetic ring.

The spoiler includes a rotating base and vanes evenly distributed around the rotating base, a shaft is arranged in the middle of the flange, and the rotating base is sleeved on the shaft through a bearing.

An observation window is also arranged on the outer wall of the lower cylinder.

The beneficial effects of the present invention are: the above-mentioned magnetic field winnowing device has a simple structure and low cost. It generates a magnetic field after the magnetic ring is energized. After the plastic and impurities pass through the magnetic ring, the electrostatic force that makes them combined is destroyed by the magnetic field, so that the plastic and impurities are automatically separated; a spoiler is set in the winnowing room to be separated by the magnetic field The plastics and impurities are thrown into the air again through the spoiler, so that the plastics and impurities are fully dispersed, and the lighter impurities (paper scraps, labels, dust, etc.) The plastic fragments fall down from the gap between the baffle plate and the winnowing chamber and enter the next process. This structure greatly improves the separation effect of plastics and impurities, and the separation rate of impurities reaches 98%. If a two-stage magnetic field separation device is used, the impurities in broken plastics can be completely separated in theory.

Description of drawings

Fig. 1 is a structural representation of the present invention;

In the figure: 1. frame, 2. winnowing bin, 21. upper cylinder, 22. lower cylinder, 23. flange, 3. feed pipe, 4. discharge port, 5. fan, 51. suction Air outlet, 52, air outlet, 6, spoiler, 61, rotating base, 62, blade, 7, magnetic ring, 8, shaft, 9, bearing, 10, observation window.

Detailed ways

The magnetic field winnowing device of the present invention will be further described in detail through specific examples below.

As shown in Figure 1, the magnetic field winnowing device comprises a frame 1, and the winnowing bin 2 is arranged on the frame 1, and the winnowing bin 2 includes an upper cylinder 21, a lower cylinder 22 and a connection between the upper cylinder 21 and the lower cylinder. The flange 23 of the body 22, the outer wall of the upper cylinder 21 is provided with a feed pipe 3, the feed pipe 3 extends into the inside of the winnowing bin 2, and the bottom of the lower cylinder 22 is the discharge port 4, the upper cylinder The top of 21 is provided with fan 5, the air suction port 51 of fan 5 is located inside winnowing bin 2, the air outlet 52 of fan 5 is positioned at the outside of upper cylinder 21, and winnowing bin 2 is provided with and is vertical to the axial direction of winnowing bin 2. The spoiler 6 is set movably on the flange 23, and the bottom end of the feed pipe 3 is provided with a magnetic ring 7.

As a preferred solution, the spoiler 6 includes a rotating base 61 and vanes 62 evenly distributed around the rotating base 61 , the middle of the flange 23 is provided with a shaft 8 , and the rotating base 61 is sleeved on the shaft 8 through a bearing 9 .

As a preferred solution, an observation window 10 is also provided on the outer wall of the lower cylinder 22 for observing the situation inside the winnowing bin 2 .

The working principle of the present invention is: when working, start the fan 5, and the fan 5 will generate suction in the winnowing bin 2 to drive the spoiler 6 to rotate. During the ring 7 process, the magnetic force generated by the magnetic ring 7 destroys the electrostatic force between the plastic fragments and the impurities, so that the impurities and the plastic fragments are separated and fall together on the spoiler 6, and the centrifugal force generated by the rotation of the spoiler 6 Throw plastic fragments and impurities into the air to make them fully dispersed. The relatively light impurities such as labels and paper scraps are sucked out by the fan 5 and discharged from the air outlet 52 of the fan 5. The plastic fragments are close to the inside of the winnowing bin 2 from the discharge port. 4 falls into the next device. Among them, the rotating speed of the fan 5 and the magnetic force of the magnetic ring 7 are adjustable, and the rotating speed and the magnetic force can be adjusted at will according to the weight of the material and the amount of impurities, so as to ensure that the magnetic field winnowing device works in the best state.

The above-mentioned embodiment only illustrates the principle of the present invention and its effect, and the embodiment of partial use, but is not intended to limit the present invention; It should be pointed out that for those of ordinary skill in the art, without departing from the Under the premise of creating ideas, some modifications and improvements can also be made, which all belong to the protection scope of the present invention.

Claims (2)

1. The magnetic field winnowing device includes a frame, on which there is a winnowing bin, and the winnowing bin includes an upper cylinder, a lower cylinder and a flange connecting the upper cylinder and the lower cylinder, and the outer wall of the upper cylinder A feed pipe is provided, and the feed pipe extends into the air separation bin, and the bottom of the lower cylinder is a discharge port, and the feature is that: a fan is installed on the top of the upper cylinder, and the air suction port of the fan is located inside the air selection bin , the air outlet of the fan is located outside the upper cylinder, and a spoiler plate perpendicular to the axial direction of the winnowing bin is arranged in the winnowing bin. The magnetic ring, the spoiler includes a rotating base and blades evenly distributed around the rotating base, a shaft is arranged in the middle of the flange, and the rotating base is sleeved on the shaft through a bearing. 2. The magnetic field winnowing device according to claim 1, characterized in that: an observation window is also provided on the outer wall of the lower cylinder.

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