A calcining device for purifying quartz sand

Abstract

The present invention discloses a calcining device for purifying quartz sand, comprising a shell, a crucible fixedly mounted inside the shell, an insulation layer provided outside the crucible, a first partition provided at the bottom of the insulation layer, an air suction pump fixedly mounted on one side of the bottom of the first partition, an electric heater fixedly mounted on the side of the bottom of the first partition away from the air suction pump, a second partition fixedly mounted on the top of the insulation layer, a motor fixedly mounted on one side of the top of the second partition, a conveying screw connected to the output shaft of the motor, a crushing box provided at the bottom of the second partition near the other end of the conveying screw, a crushing blade fixedly mounted on one side of the inside of the crushing box, a first filter provided at the bottom of the crushing box near the crushing blade, and a second filter fixedly mounted inside the second partition. This calcining device for purifying quartz sand has a simple and reasonable structure, effectively solves the problem of most existing calcining devices for purifying quartz sand lacking the ability to control the particle size of quartz sand, and is worthy of widespread promotion and use.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand purification, in particular to a calcining device for purifying quartz sand. Background Art

[0002] High-purity silica is a crucial optoelectronic material, widely used in high-tech fields such as semiconductors, fiber optic communications, lasers, and aerospace. With the rapid development of these fields, requirements for impurity levels in high-purity silica have become increasingly stringent, and demand for high-purity silica is also increasing. Currently, my country relies heavily on imports for its high-purity silica. Therefore, utilizing quartz sand purification technology to obtain high-purity silica is an effective way to meet the demand for high-purity silicon in my country's high-tech sectors and is of great significance to promoting the development of the national economy.

[0003] During the purification of quartz sand, high-temperature calcination is typically required to remove volatile components, including hydroxyl groups, from the sand. Prior art calcination equipment is used to heat the sand to remove hydroxyl compounds. The particle size of the sand during calcination and purification significantly impacts the purification effect. However, most existing calcination devices for purifying quartz sand lack a device for controlling the particle size. Therefore, we have addressed this issue by proposing a calcination device for purifying quartz sand. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention provides a calcining device for purifying quartz sand, comprising a shell, a crucible fixedly installed inside the shell, an insulation layer provided on the outside of the crucible, a first partition provided at the bottom of the insulation layer, an air suction pump fixedly installed on one side of the bottom of the first partition, an electric heater fixedly installed on the side of the bottom of the first partition away from the air suction pump, a second partition fixedly installed on the top of the insulation layer, a motor fixedly installed on one side of the top of the second partition, a conveying screw connected to the output shaft of the motor, a crushing box provided at the bottom of the second partition near the other end of the conveying screw, a crushing blade fixedly installed on one side of the inside of the crushing box, a first filter provided at the bottom of the crushing box near the crushing blade, and a second filter fixedly installed inside the second partition.

[0006] As a preferred technical solution of the present invention, an air suction hood is fixedly installed on one side of the second partition close to the bottom of the motor, and the air suction hood and the air suction pump are connected to each other through a pipeline.

[0007] As a preferred technical solution of the present invention, the air suction hood is cylindrical, a plurality of air suction holes are opened on the outside of the air suction hood, and a third filter is fixedly installed inside the air suction hood.

[0008] As a preferred technical solution of the present invention, a feed port is provided on one side of the top of the shell, the feed port is conical, and the second filter is arranged at the bottom of the feed port.

[0009] As a preferred technical solution of the present invention, the crushing blades are provided in a pair and are engaged with each other. The crushing blades are each provided with a plurality of blades, and the blades are arranged around the blades.

[0010] As a preferred technical solution of the present invention, the bottom of the crucible is conical, the conical bottom has a discharge port, and the discharge port is provided with a discharge valve.

[0011] As a preferred technical solution of the present invention, a heating tube is arranged inside the side wall of the crucible. The heating tube is spirally wrapped around the inside of the side wall of the crucible, and the heating tube is connected to the electric heater through a pipeline.

[0012] As a preferred technical solution of the present invention, sliding bars are provided on both sides of the outside of the mounting frame of the first filter screen, and a first filter screen mounting groove is provided on the side of the shell close to the first filter screen. The first filter screen mounting groove has sliding grooves on both sides that engage with the sliding bars.

[0013] The beneficial effects of the present invention are as follows: the calcining device for purifying quartz sand is convenient for collecting exhaust gas generated by calcination by installing an exhaust hood; the third filter is installed inside the exhaust hood, impurities in the exhaust gas are conveniently filtered; the second filter is installed at the bottom of the feed port, the preliminary particle size screening of the quartz sand is convenient, thereby improving the purification efficiency; the multiple blades are arranged around the blade, thereby improving the crushing efficiency; the bottom of the crucible is set to be conical, which is convenient for unloading, and a unloading valve is provided at the bottom, which is convenient for controlling the unloading; the heating tube is arranged inside the side wall of the crucible, which is convenient for heating the crucible, and the crucible is heated evenly by arranging the sliding bar and the sliding groove; the device has a simple and reasonable structure and is easy to use, effectively solving the problem that most existing calcining devices for purifying quartz sand lack the control of quartz sand particle size, and has the value of being widely promoted and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a calcining device for purifying quartz sand according to the present invention;

[0016] Figure 2It is a front cross-sectional structural schematic diagram of a calcining device for purifying quartz sand according to the present invention;

[0017] Figure 3 The present invention is a schematic diagram of the structure of an air intake hood of a calcining device for purifying quartz sand.

[0018] In the figure: 1. Shell; 2. Crucible; 3. Insulation layer; 4. First partition; 5. Suction pump; 6. Electric heater; 7. Second partition; 8. Motor; 9. Transport screw; 10. Crushing box; 11. Crushing blade; 12. First filter; 13. Second filter; 14. Suction hood; 15. Suction hole; 16. Third filter; 17. Feed inlet; 18. Discharge port. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example: Figure 1-3 As shown, the present invention provides a calcining device for purifying quartz sand, comprising a shell 1, a crucible 2 is fixedly installed inside the shell 1, an insulation layer 3 is provided on the outside of the crucible 2, a first partition 4 is provided at the bottom of the insulation layer 3, an air suction pump 5 is fixedly installed on one side of the bottom of the first partition 4, an electric heater 6 is fixedly installed on the side of the bottom of the first partition 4 away from the air suction pump 5, a second partition 7 is fixedly installed on the top of the insulation layer 3, a motor 8 is fixedly installed on one side of the top of the second partition 7, the output shaft of the motor 8 is connected to a transport screw 9, a crushing box 10 is provided at the bottom of the second partition 7 near the other end of the transport screw 9, a crushing blade 11 is fixedly installed on one side of the inside of the crushing box 10, a first filter screen 12 is provided at the bottom of the crushing box 10 near the crushing blade 11, and a second filter screen 13 is fixedly installed inside the second partition 7.

[0021] Among them, the second partition 7 is fixedly installed with an air suction hood 14 on one side near the bottom of the motor 8, and the air suction hood 14 is connected to the air suction pump 5 through a pipeline. By installing the air suction hood 14, the exhaust gas generated by calcination is conveniently collected.

[0022] The air intake hood 14 is cylindrical, with a plurality of air intake holes 15 provided on the outside. A third filter screen 16 is fixedly installed inside the air intake hood 14 . By installing the third filter screen 16 inside the air intake hood 14 , impurities in the exhaust gas can be easily filtered.

[0023] Among them, a feed port 17 is opened on one side of the top of the shell 1, the feed port 17 is conical, and the second filter screen 13 is arranged at the bottom of the feed port 17. By installing the second filter screen 13 at the bottom of the feed port 17, it is convenient to perform preliminary particle size screening of the quartz sand, thereby improving the purification efficiency.

[0024] Among them, a pair of crushing blades 11 are provided and engaged with each other. Each crushing blade 11 is provided with a plurality of blades, and the blades are arranged around the blades. By arranging multiple blades around the blades, the crushing efficiency is improved.

[0025] Among them, the bottom of the crucible 2 is conical, and there is a discharge port 18 at the bottom of the cone, and the discharge port 18 is provided with a discharge valve. By setting the bottom of the crucible 2 to be conical, discharge is convenient, and the discharge valve is provided at the bottom to facilitate control of discharge.

[0026] Among them, a heating tube is arranged inside the side wall of the crucible 2, and the heating tube is spirally wrapped around the inside of the side wall of the crucible 2. The heating tube is connected to the electric heater 6 through a pipeline. By arranging the heating tube inside the side wall of the crucible 2, it is convenient to heat the crucible 2, and the heating tube is arranged in a spiral shape, so that the crucible 2 is heated evenly.

[0027] Among them, sliding bars are set on both sides of the outside of the mounting frame of the first filter 12, and a first filter mounting groove is set on the side of the shell 1 close to the first filter 12. The first filter mounting groove has sliding grooves on both sides of the inside that engage with the sliding bars. By setting the sliding bars and sliding grooves, it is easy to replace the first filter 12.

[0028] Working principle: When the calcining device for purifying quartz sand is working, the quartz sand to be purified is fed into the device from the feed port 17, the motor 8 is started to drive the transport screw 9 to rotate, and the particles that meet the requirements are filtered through the second filter screen and enter the crucible 2. The particles that are too large are transported to the crushing box 10 by the transport screw 9, crushed by the crushing blade 11 inside the crushing box 10 and fall onto the first filter screen. The particles that are too large remain on the first filter screen and are replaced after accumulating to a certain level. The particles that meet the requirements are filtered through the first filter screen and enter the crucible 2. The electric heater 6 is started to heat the crucible 2, the quartz sand is calcined and purified, the suction pump 5 is started, the waste gas generated is collected and centrally processed, and the discharge valve is opened after purification, and the purified quartz sand is discharged from the discharge port 18. The calcining device for purifying quartz sand is convenient for collecting exhaust gas generated by calcination by installing an air suction hood 14; the third filter screen 16 is installed inside the air suction hood 14, which facilitates filtering impurities in the exhaust gas; the second filter screen 13 is installed at the bottom of the feed port 17, which facilitates preliminary particle size screening of the quartz sand, thereby improving the purification efficiency; the plurality of blades are arranged around the blade to improve the crushing efficiency; the bottom of the crucible 2 is set to be conical, which facilitates material discharge, and a material discharge valve is provided at the bottom to facilitate material discharge control; the heating tube is arranged inside the side wall of the crucible 2, which facilitates heating of the crucible 2, and the crucible 2 is arranged in a spiral shape so that the crucible 2 is heated evenly; the first filter screen 12 is conveniently replaced by the provision of a slide bar and a slide chute; the device has a simple and reasonable structure and is easy to use, effectively solving the problem that most existing calcining devices for purifying quartz sand lack the control of quartz sand particle size, and has the value of being widely promoted and used.

[0029] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A calcining device for purifying quartz sand, comprising a housing (1), characterized in that: A crucible (2) is fixedly installed inside the shell (1), an insulation layer (3) is provided on the outside of the crucible (2), a first partition (4) is provided at the bottom of the insulation layer (3), an air pump (5) is fixedly installed on one side of the bottom of the first partition (4), an electric heater (6) is fixedly installed on the side of the bottom of the first partition (4) away from the air pump (5), a second partition (7) is fixedly installed on the top of the insulation layer (3), a motor (8) is fixedly installed on one side of the top of the second partition (7), an output shaft of the motor (8) is connected to a transport screw (9), a crushing box (10) is provided at the bottom of the second partition (7) near the other end of the transport screw (9), a crushing blade (11) is fixedly installed on one side of the inside of the crushing box (10), a first filter (12) is provided at the bottom of the crushing box (10) near the crushing blade (11), and a second filter (13) is fixedly installed inside the second partition (7); An air suction hood (14) is fixedly mounted on one side of the second partition (7) close to the bottom of the motor (8), and the air suction hood (14) and the air suction pump (5) are connected to each other through a pipeline; The air suction hood (14) is cylindrical, a plurality of air suction holes (15) are opened on the outside of the air suction hood (14), and a third filter (16) is fixedly installed inside the air suction hood (14); A feed port (17) is provided on one side of the top of the shell (1), the feed port (17) is conical, and the second filter screen (13) is arranged at the bottom of the feed port (17).

2. A calcining device for purifying quartz sand according to claim 1, characterized in that: A pair of the crushing blades (11) are provided and engaged with each other. Each of the crushing blades (11) is provided with a plurality of blades, and the blades are evenly arranged around the blades.

3. A calcining device for purifying quartz sand according to claim 1, characterized in that: The bottom of the crucible (2) is conical, the conical bottom is provided with a discharge port (18), and the discharge port (18) is provided with a discharge valve.

4. A calcining device for purifying quartz sand according to claim 1, characterized in that: A heating tube is arranged inside the side wall of the crucible (2), the heating tube spirally surrounds the inside of the side wall of the crucible (2), and the heating tube is connected to the electric heater (6) through a pipeline.

5. A calcining device for purifying quartz sand according to claim 1, characterized in that: Slide bars are provided on both sides of the outside of the mounting frame of the first filter screen (12), and a first filter screen mounting groove is provided on the side of the housing (1) close to the first filter screen (12), and slide bars are provided on both sides of the inside of the first filter screen mounting groove and engage with the slide bars.

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