Magnetic separation device for silicon carbide micro powder

Abstract

The magnetic separation device comprises a box body, a discharging channel is formed in one side of the bottom of the box body, a mounting groove is formed in the inner wall of the discharging channel, an electromagnet is fixed in the mounting groove, an opening and closing mechanism is arranged at the position, above the discharging channel, in the box body, and the opening and closing mechanism is connected with the electromagnet. According to the magnetic separation device for the silicon carbide micro powder, a handle is rotated forwards, the handle drives a rotating shaft to rotate forwards, and the rotating shaft is in threaded connection with a threaded hole, so that a baffle obliquely moves upwards under the limitation of a guide groove, and a gap exists between the bottom of the baffle and the bottom in the box body; and a small amount of silicon carbide micro powder in the box body can continuously enter the interior of the discharging channel, adsorption of iron impurities in the silicon carbide micro powder by an electromagnet is facilitated, and the situation that the iron impurities in the silicon carbide micro powder cannot be completely adsorbed by the electromagnet due to the fact that a large amount of silicon carbide micro powder passes through the electromagnet is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide micropowder processing, in particular to a magnetic separation device for silicon carbide micropowder. Background Technique

[0002] Silicon carbide micropowder is an important material for making products such as solar silicon wafers, semiconductor silicon wafers, engineering ceramics, heating elements, and high-grade refractory materials. During the processing of silicon carbide micropowder, a magnetic separation device is required to remove iron impurities in the silicon carbide micropowder.

[0003] However, when the existing magnetic separation device for silicon carbide micropowder performs magnetic separation on silicon carbide micropowder, a large amount of silicon carbide micropowder will pass through the electromagnet, resulting in the situation that the electromagnet cannot adsorb the iron impurities in the silicon carbide micropowder cleanly, which is not conducive to the impurity removal of silicon carbide micropowder. At the same time, during the collection process of silicon carbide micropowder, the silicon carbide micropowder will be scattered into the air, resulting in a deterioration of the working environment and also causing waste.

[0004] In view of the above problems, there is an urgent need to innovate and design on the basis of the original magnetic separation device for silicon carbide micropowder. Content of the Utility Model

[0005] The purpose of the utility model is to provide a magnetic separation device for silicon carbide micropowder to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A magnetic separation device for silicon carbide micropowder, including a box body. One side of the bottom of the box body is provided with a discharge channel. An installation groove is opened on the inner wall of the discharge channel. An electromagnet is fixed inside the installation groove. An opening and closing mechanism is arranged above the discharge channel inside the box body. A dust-proof scattering mechanism is arranged below the discharge channel at the bottom of the box body;

[0007] The opening and closing mechanism includes a guiding groove. A guiding groove is opened on the side wall of the box body above the discharge channel. A baffle is penetrated inside the guiding groove. The side of the baffle is mutually attached to the inner wall of the box body. A threaded hole is opened inside the baffle. A fixing plate is fixed on the outer wall of the box body. A rotating shaft is rotatably installed inside the fixing plate through a bearing. The lower end of the rotating shaft is located inside the threaded hole. A handle is fixed at the upper end of the rotating shaft.

[0008] Preferably, the dust-proof scattering mechanism includes an aggregate pipe. The bottom of the box body is fixed with an aggregate pipe below the discharge channel. An activity pipe is arranged outside the bottom of the aggregate pipe. A fixed ring is fixed on the outer wall of the activity pipe. A rubber seal is fixed at the bottom of the fixed ring. A collection tank is arranged below the aggregate pipe. A feed pipe is arranged at the top of the collection tank. The lower end of the activity pipe is located inside the feed pipe. The bottom of the rubber seal abuts against the top of the feed pipe.

[0009] Preferably, the outside of the bottom of the aggregate pipe is threadedly connected to the inside of the activity pipe. A fixed rod is fixed on the outer wall of the activity pipe. The fixed rods are distributed at equal angles about the central axis of the activity pipe.

[0010] Preferably, a feeding bin is arranged on one side of the top of the box body. A sealing cover is threadedly installed on the top of the feeding bin.

[0011] Preferably, the bottom inside the box body is designed to be inclined, and the baffle is designed to be inclined.

[0012] Preferably, the outer wall of the baffle fits against the inner wall of the guiding groove, and the baffle and the guiding groove form a snap-in sliding structure. The threaded hole and the rotating shaft are threadedly connected.

[0013] Compared with the prior art, the beneficial effect of the present utility model is as follows: For this magnetic separation device for silicon carbide micropowder, when the handle is rotated forward, the handle drives the rotating shaft to rotate forward. Since the rotating shaft is threadedly connected to the threaded hole, the baffle moves obliquely upward under the limitation of the guiding groove, so that there is a gap between the bottom of the baffle and the bottom inside the box body. This allows a small amount of silicon carbide micropowder inside the box body to continuously enter the discharge channel, which is beneficial for the electromagnet to adsorb iron impurities in the silicon carbide micropowder, and avoids the situation where a large amount of silicon carbide micropowder passes through the electromagnet, resulting in the electromagnet being unable to adsorb the iron impurities in the silicon carbide micropowder cleanly.

[0014] The aggregate pipe and the activity pipe are threadedly connected. Therefore, by rotating the activity pipe through the fixed rod, the activity pipe can drive the fixed ring and the rubber seal to move downward, so that the bottom of the rubber seal can be in close contact with the top of the feed pipe, avoiding the scattering of silicon carbide micropowder during the collection process, ensuring the quality of the working environment, and also avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front sectional view structural schematic diagram of the present utility model;

[0016] Figure 2 is of the present utility model Figure 1 the enlarged structural schematic diagram at A in;

[0017] Figure 3 is of the present utility model Figure 1Schematic diagram of the enlarged structure at B in the [Chinese context];

[0018] Figure 4 Schematic side sectional view of the aggregate pipe of the present utility model;

[0019] Figure 5 Schematic top view installation structure of the fixing rod of the present utility model;

[0020] Figure 6 Schematic bottom view installation structure of the rubber seal of the present utility model;

[0021] Figure 7 Schematic top sectional view installation structure of the electromagnet of the present utility model;

[0022] Figure 8 Schematic top sectional view installation structure of the baffle of the present utility model.

[0023] In the figure: 1, box body; 2, discharge channel; 3, electromagnet; 4, guide groove; 5, baffle; 6, threaded hole; 7, fixing plate; 8, rotating shaft; 9, handle; 10, aggregate pipe; 11, movable pipe; 12, fixing ring; 13, rubber seal; 14, collection tank; 15, feed pipe; 16, fixing rod; 17, feeding bin; 18, sealing cover. Specific implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1-8 , the present utility model provides a technical solution: a magnetic separation device for silicon carbide micropowder, including a box body 1, a discharge channel 2 is opened on one side of the bottom of the box body 1, an installation groove is opened on the inner wall of the discharge channel 2, an electromagnet 3 is fixed inside the installation groove, an opening and closing mechanism is arranged above the discharge channel 2 inside the box body 1, and a dust-proof scattering mechanism is arranged below the discharge channel 2 at the bottom of the box body 1;

[0026] The opening and closing mechanism includes a guide groove 4, a guide groove 4 is opened on the side wall of the box body 1 above the discharge channel 2, a baffle 5 penetrates through the inside of the guide groove 4, the side of the baffle 5 is in mutual fit with the inner wall of the box body 1, a threaded hole 6 is opened inside the baffle 5, a fixing plate 7 is fixed on the outer wall of the box body 1, a rotating shaft 8 is rotatably installed inside the fixing plate 7 through a bearing, the lower end of the rotating shaft 8 is located inside the threaded hole 6, and the upper end of the rotating shaft 8 is fixed with a handle 9.

[0027] The dust-proof scattering mechanism includes an aggregate pipe 10. The bottom of the box body 1 is fixed with the aggregate pipe 10 below the discharge channel 2. An activity pipe 11 is arranged outside the bottom of the aggregate pipe 10. A fixing ring 12 is fixed on the outer wall of the activity pipe 11. A rubber seal 13 is fixed at the bottom of the fixing ring 12. A collection tank 14 is arranged below the aggregate pipe 10. A feed pipe 15 is arranged at the top of the collection tank 14. The lower end of the activity pipe 11 is located inside the feed pipe 15. The bottom of the rubber seal 13 abuts against the top of the feed pipe 15.

[0028] The outside of the bottom of the aggregate pipe 10 is threadedly connected to the inside of the activity pipe 11. A fixing rod 16 is fixed on the outer wall of the activity pipe 11. The fixing rods 16 are equally angularly distributed about the central axis of the activity pipe 11, which facilitates the rotation of the activity pipe 11 through the fixing rods 16, enabling the activity pipe 11 to move up and down on the aggregate pipe 10, so that the rubber seal 13 can be in close contact with the top of the feed pipe 15, avoiding scattering during the collection of silicon carbide micropowder.

[0029] One side of the top of the box body 1 is provided with a feeding bin 17. A sealing cover 18 is threadedly installed at the top of the feeding bin 17. Through the feeding bin 17, the silicon carbide micropowder that needs to be purified of impurities can be poured into the inside of the box body 1.

[0030] The bottom inside the box body 1 is inclined, and the baffle 5 is inclined, so that the silicon carbide micropowder inside the box body 1 can enter the inside of the discharge channel 2.

[0031] The outer wall of the baffle 5 fits with the inner wall of the guiding groove 4, and the baffle 5 and the guiding groove 4 form a snap-in sliding structure. The threaded hole 6 and the rotating shaft 8 are threadedly connected, ensuring that when the rotating shaft 8 rotates forward or backward, the baffle 5 can move obliquely upward or obliquely downward, so that the silicon carbide micropowder inside the box body 1 can enter the inside of the discharge channel 2.

[0032] Working principle: When using this magnetic separation device for silicon carbide micropowder, first rotate the sealing cover 18 to remove the sealing cover 18 from the top of the feeding bin 17, then pour the silicon carbide micropowder into the inside of the box body 1 through the feeding bin 17, and then install the sealing cover 18 back in place. Then, energize the electromagnet 3, and then rotate the handle 9 forward. At this time, the handle 9 drives the rotating shaft 8 to rotate forward. Since the rotating shaft 8 and the threaded hole 6 are threadedly connected, the baffle 5 moves obliquely upward under the limitation of the guiding groove 4, so that there is a gap between the bottom of the baffle 5 and the bottom inside the box body 1, enabling a small amount of silicon carbide micropowder inside the box body 1 to continuously enter the inside of the discharge channel 2, which is beneficial to the adsorption of iron impurities in the silicon carbide micropowder by the electromagnet 3. The iron impurities in the silicon carbide micropowder are adsorbed by the electromagnet 3, and the silicon carbide micropowder enters the inside of the collection tank 14 through the aggregate pipe 10, the activity pipe 11 and the feed pipe 15 for centralized collection;

[0033] Since the aggregate pipe 10 and the movable pipe 11 are threadedly connected, by rotating the movable pipe 11 through the fixed rod 16, the movable pipe 11 can drive the fixed ring 12 and the rubber seal 13 to move downward, so that the bottom of the rubber seal 13 can be in close contact with the top of the feed pipe 15, avoiding the scattering during the collection of silicon carbide micropowder. Similarly, by rotating the movable pipe 11 in the reverse direction through the fixed rod 16, the movable pipe 11 can move upward, so that the movable pipe 11 is separated from the feed pipe 15, enabling the collection tank 14 and the feed pipe 15 to be removed from the movable pipe 11.

[0034] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A magnetic separation device for silicon carbide micropowder, comprising a box body (1), characterized in that: One side of the bottom of the box body (1) is provided with a discharge channel (2). An installation groove is formed in the inner wall of the discharge channel (2), and an electromagnet (3) is fixed inside the installation groove. An opening and closing mechanism is arranged above the discharge channel (2) inside the box body (1), and a dust prevention and scattering mechanism is arranged below the discharge channel (2) at the bottom of the box body (1). The opening and closing mechanism includes a guiding groove (4). The guiding groove (4) is formed in the side wall of the box body (1) above the discharge channel (2). A baffle (5) penetrates through the guiding groove (4). The side of the baffle (5) is in close contact with the inner wall of the box body (1). A threaded hole (6) is formed inside the baffle (5). A fixing plate (7) is fixed on the outer wall of the box body (1). A rotating shaft (8) is rotatably installed inside the fixing plate (7) through a bearing. The lower end of the rotating shaft (8) is located inside the threaded hole (6), and a handle (9) is fixed at the upper end of the rotating shaft (8).

2. The magnetic separation device for silicon carbide micropowder according to claim 1, wherein: The dust prevention and scattering mechanism includes an aggregate pipe (10). The aggregate pipe (10) is fixed below the discharge channel (2) at the bottom of the box body (1). An activity pipe (11) is arranged on the outer side of the bottom of the aggregate pipe (10). A fixing ring (12) is fixed on the outer wall of the activity pipe (11). A rubber seal (13) is fixed at the bottom of the fixing ring (12). A collection tank (14) is arranged below the aggregate pipe (10). A feed pipe (15) is arranged at the top of the collection tank (14). The lower end of the activity pipe (11) is located inside the feed pipe (15), and the bottom of the rubber seal (13) abuts against the top of the feed pipe (15).

3. The magnetic separation device for silicon carbide micropowder according to claim 2, wherein: The outer side of the bottom of the aggregate pipe (10) is threadedly connected with the inner side of the activity pipe (11). A fixing rod (16) is fixed on the outer wall of the activity pipe (11), and the fixing rods (16) are distributed at equal angles with respect to the central axis of the activity pipe (11).

4. A magnetic separation device for silicon carbide micropowder according to claim 1, characterized in that: One side of the top of the box body (1) is provided with a feeding bin (17), and a sealing cover (18) is threadedly installed on the top of the feeding bin (17).

5. The magnetic separation device for silicon carbide micropowder according to claim 1, characterized in that: The bottom inside the box body (1) is designed to be inclined, and the baffle (5) is designed to be inclined.

6. The magnetic separation device for silicon carbide micropowder according to claim 1, characterized in that: The outer wall of the baffle (5) is in close contact with the inner wall of the guiding groove (4), and the baffle (5) and the guiding groove (4) form a snap-fit sliding structure. The threaded hole (6) is threadedly connected with the rotating shaft (8).

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