Special device for removing iron from metal silicon powder

Abstract

The utility model discloses a special deironing device for metal silicon powder, which comprises a casing, a strong magnet and rollers, the inside of the casing is divided into a deironing cavity and a material purifying cavity through a partition plate, the two rollers are arranged in the deironing cavity in a rolling manner, one part of each roller extends into the material purifying cavity through a notch on the partition plate, the strong magnet is arranged in a material barrel and faces the notch, and the strong magnet is arranged in the material barrel and faces the notch. A feeding port communicated with the material purifying cavity is formed in the top of the machine shell, a material distributor is arranged on the partition plate, close to the feeding port, of the roller in the material incoming direction, a gap is formed between the roller and the partition plate in the material removing direction, and an iron discharging port communicated with the iron removing cavity and a material purifying discharging port communicated with the material purifying cavity are formed in the bottom of the machine shell; the strong magnet is arranged in the rolling roller, iron removal can be automatically carried out on passing silicon powder, iron can be automatically removed, and the problem that time and labor are consumed in existing manual cleaning is solved.

Description

Technical field:

[0001] The utility model relates to the technical field of silicon powder processing, in particular to a special device for removing iron from metallic silicon powder. Background technology:

[0002] In recent years, with the explosive development of the photovoltaic industry, the amount of silicon powder used has continued to rise, and the requirements for the quality of silicon powder have become increasingly higher, not only the content of impurities in silicon powder is required, but also the content of iron in silicon powder is required to be higher. At present, in silicon powder processing equipment, static iron removal is generally used for iron removal. Although this iron removal method can remove some iron-containing impurities, the iron removal efficiency is low and manual cleaning is required every shift, which is time-consuming and labor-intensive. Utility model content:

[0003] The technical problem to be solved by the utility model is: by arranging a strong magnet in the rolling drum, the passing silicon powder can be automatically de-ironized, and the iron can be automatically removed, thereby solving the problem of time-consuming and labor-intensive manual cleaning in the prior art.

[0004] In order to solve the above technical problems, the utility model provides a technical solution: a special device for removing iron from metallic silicon powder, comprising a casing, a strong magnet and a roller, characterized in that: the casing is divided into an iron removal chamber and a clean material chamber by a partition, the two rollers are rotatably arranged in the iron removal chamber, and a part of the roller extends into the clean material chamber through the notch on the partition, the strong magnet is arranged in the barrel and faces the notch, a feed port connected to the clean material chamber is arranged on the top of the casing, a divider is arranged on the partition in the material incoming direction of the roller near the feed port, a gap is provided between the roller and the partition in the material removal direction, and an iron discharge port connected to the iron removal chamber and a clean material discharge port connected to the clean material chamber are provided at the bottom of the casing.

[0005] Furthermore, the curvature of the strong magnet matches the curvature of the drum, and the length of the strong magnet is greater than the length of the gap and less than one third of the circumference of the drum.

[0006] Furthermore, the material distributor is at least two ribs arranged on the partition, and the ribs are evenly distributed in a scattered manner from the feed inlet to the outside.

[0007] Furthermore, a baffle is provided between the two rollers.

[0008] Furthermore, the housing is provided with an observation window corresponding to the notch.

[0009] The beneficial effects of the utility model are:

[0010] 1. The present application realizes automatic iron removal of silicon powder passing through by setting a strong magnet in the rolling drum, and can realize automatic removal of iron, thereby solving the problem of time-consuming and labor-intensive manual cleaning.

[0011] 2. In the present application, the two rollers are rotatably arranged in the iron removal chamber, and a part of the roller extends into the clean material chamber through the notch on the partition. When the silicon powder passes through the roller in the clean material chamber, the iron is adsorbed on the roller. When the roller rotates, it drives the iron from the clean material chamber to the iron removal chamber. The strong magnet does not rotate. After the iron leaves the adsorption range of the strong magnet, the iron falls into the iron removal chamber, thereby completing the automatic iron removal operation.

[0012] 3. There is a gap between the roller and the partition in the material removal direction described in this application, which makes it easy for the roller to drive the iron from the clean material chamber to the iron removal chamber, and because the roller is protruding, it can block the silicon powder and prevent the silicon powder from entering the iron removal chamber through the gap.

[0013] 4. In the present application, the curvature of the strong magnet matches the curvature of the drum, so that the strong magnet slides and fits inside the drum. At the same time, since the length of the strong magnet is greater than the length of the notch and less than one-third of the circumference of the drum, the notch is within the range of strong magnetic adsorption, thereby ensuring the adsorption effect of the iron on the drum. Since the adsorption range of the strong magnet extends from the clean material chamber to the iron removal chamber, it is convenient to transfer the iron from the clean material chamber to the iron removal chamber when the drum rotates, and form an area without strong magnetic adsorption in the iron removal chamber. When the iron moves to this area, it can automatically fall from the drum, which is easy to use.

[0014] 5. In the present application, the distributor is at least two ribs arranged on the partition, and the ribs are evenly distributed in a scattered manner from the feed port to the outside, which can disperse the silicon powder entering from the feed port through the roller to improve the iron removal quality. At the same time, the two rollers perform iron removal operations in sequence and simultaneously to further ensure the iron removal effect.

[0015] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. Description of the drawings:

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only two of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the structure of this application.

[0018] Figure 2 It is the structural schematic diagram of this distributor.

[0019] In the figure, 1- housing, 2- strong magnet, 3- roller, 4- partition, 5- notch, 6- feed port, 7- material distributor, 8- gap, 9- iron discharge port, 10- clean material discharge port, 11- rib, 12- baffle, 13- observation window. A- iron removal chamber, B- clean material chamber. Specific implementation method:

[0020] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0021] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0022] The names of the messages or information exchanged between multiple devices in the implementation manner of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0023] Embodiment 1

[0024] like Figure 1-2As shown, a special device for removing iron from metallic silicon powder comprises a casing 1, a strong magnet 2 and a roller 3. The casing 1 is divided into an iron removal chamber A and a clean material chamber B by a partition 4. Two rollers 3 are rotatably arranged in the iron removal chamber A, and a part of the roller 3 extends into the clean material chamber B through a notch 5 on the partition 4. The strong magnet 2 is arranged in the barrel and faces the notch 5. A feed port 6 connected to the clean material chamber B is arranged on the top of the casing 1, and a distributor 7 is arranged on the partition 4 in the material incoming direction of the roller 3 near the feed port 6. A gap 8 is provided between the roller 3 and the partition 4 in the material removal direction. An iron discharge port 9 connected to the iron removal chamber A and a clean material discharge port 10 connected to the clean material chamber B are provided at the bottom of the casing 1; the two rollers 3 are rotatably arranged in the iron removal chamber A, and a part of the roller 3 It extends into the clean material chamber B through the notch 5 on the partition 4. When the silicon powder passes through the roller 3 in the clean material chamber B, the iron is adsorbed on the roller 3. When the roller 3 rotates, it drives the iron from the clean material chamber B to the iron removal chamber A. The strong magnet 2 does not rotate (the strong magnet 2 is arranged on the inner wall of one side of the casing 1, and the roller 3 is arranged on the inner wall of the other side of the casing 1, and the rotating shaft of the roller 3 passes through the casing 1 and is linked to the external motor). After the iron is out of the adsorption range of the strong magnet 2, the iron falls into the iron removal chamber A, thereby completing the automatic iron removal operation; there is a gap 8 between the roller 3 and the partition 4 in the material removal direction, which is convenient for the roller 3 to drive the iron from the clean material chamber B to the iron removal chamber A, and because the roller 3 is protruding, it can block the silicon powder and prevent the silicon powder from entering the iron removal chamber A from the gap 8.

[0025] Among them, the curvature of the strong magnet 2 is consistent with the curvature of the drum 3, and the length of the strong magnet 2 is greater than the length of the gap 5 and less than one-third of the circumference of the drum 3; the curvature of the strong magnet 2 is consistent with the curvature of the drum 3, so that the strong magnet 2 and the inside of the drum 3 slide and fit. At the same time, since the length of the strong magnet 2 is greater than the length of the gap 5 and less than one-third of the circumference of the drum 3, the gap 5 is within the adsorption range of the strong magnet 2, ensuring the adsorption effect of the iron on the drum 3. Since the adsorption range of the strong magnet 2 extends from the clean material chamber B to the iron removal chamber A, it is convenient to transfer the iron from the clean material chamber B to the iron removal chamber A when the drum 3 rotates, and form an area without strong magnet 2 adsorption in the iron removal chamber A. When the iron moves to this area, it can automatically fall from the drum 3, which is convenient to use.

[0026] The housing 1 is provided with an observation window 13 corresponding to the notch 5, so as to facilitate observation of the iron removal effect.

[0027] Embodiment 2

[0028] like Figure 1-2 As shown, this embodiment is obtained by further describing the technical features such as the divider 7 on the basis of the first embodiment. The remaining technical features are the same as those of the first embodiment, and the similarities are not repeated here. Among them, the difference between this embodiment and the first embodiment is that the divider 7 is at least two ribs 11 arranged on the partition 4, and the ribs 11 are evenly distributed in a scattered manner from the feed port 6 to the outside.

[0029] In this embodiment, the distributor 7 is at least two ribs 11 arranged on the partition 4, and the ribs 11 are evenly distributed in a scattered manner from the feed port 6 to the outside, which can disperse the silicon powder entering from the feed port 6 through the roller 3, thereby improving the quality of iron removal. At the same time, the two rollers 3 perform iron removal operations in sequence and simultaneously, further ensuring the iron removal effect. At the same time, the setting of the ribs 11 increases the strength of the partition 4, thereby preventing the silicon powder from impacting and deforming the partition 4 when entering from the feed port 6.

[0030] Embodiment 3

[0031] like Figure 1-2 As shown, this embodiment is obtained by further describing the technical features such as the divider 7 on the basis of the second embodiment. The remaining technical features are the same as those of the second embodiment, and the similarities are not repeated here. Among them, the difference between this embodiment and the second embodiment is that a baffle 12 is arranged between the two rollers 3.

[0032] In this embodiment, the baffle 12 blocks the iron falling from the upper drum 3 to prevent it from contacting the lower drum 3, thereby increasing the wear of the drum 3; wherein the casing 1, the drum 3, the partition 4 and the baffle 12 are all made of stainless steel, and the cost is low.

[0033] The process of using the overall technical solution formed by the above embodiments is as follows: the silicon powder is dispersed from the feed port 6 through the distributor 7 and freely falls to the first roller 3. The rotating roller 3 adsorbs iron-containing impurities on the surface of the roller 3 while conveying the silicon powder (the roller 3 is driven by a motor to rotate synchronously). When the roller 3 rotates to the part without strong magnetism 2, it freely falls into the iron removal chamber A and is discharged from the iron discharge port 9. The silicon powder that has been decontaminated once passes through another roller 3 for a second decontamination operation, and the decontaminated silicon powder is discharged through the clean material discharge port 10.

[0034] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A special device for removing iron from metallic silicon powder, comprising a housing, a strong magnet and a drum, characterized in that: The inside of the casing is divided into an iron removal chamber and a clean material chamber by a partition. The two rollers are rotatably arranged in the iron removal chamber, and a part of the rollers extends into the clean material chamber through the notch on the partition. The strong magnet is arranged in the rollers and faces the notch. A feed port connected to the clean material chamber is arranged on the top of the casing, a divider is arranged on the partition in the material incoming direction of the roller near the feed port, and a gap is provided between the roller and the partition in the material removal direction. An iron discharge port connected to the iron removal chamber and a clean material discharge port connected to the clean material chamber are arranged at the bottom of the casing.

2. A device for removing iron from metallic silicon powder according to claim 1, characterized in that: The curvature of the strong magnet is consistent with the curvature of the roller, and the length of the strong magnet is greater than the length of the gap and less than one third of the circumference of the roller.

3. A special device for removing iron from metallic silicon powder according to claim 2, characterized in that: The material distributor is at least two ribs arranged on the partition plate, and the ribs are evenly distributed in a scattered manner from the feed inlet to the outside.

4. A device for removing iron from metallic silicon powder according to claim 3, characterized in that: A baffle is arranged between the two rollers.

5. A device for removing iron from metallic silicon powder according to claim 4, characterized in that: The casing is provided with an observation window corresponding to the notch.

Images