Dust particle screening device

Abstract

The utility model discloses a dust particle screening device which comprises an outer shell, a feeding port, a high-voltage electrostatic field and a positive plate, the outer shell is a square box body, and a discharging port is formed in the lower end face of the outer shell; a feeding port is formed in the upper end face of the shell, a high-voltage electrostatic field is arranged below the feeding port, a positive plate is arranged below the high-voltage electrostatic field, and a collecting box is arranged below the positive plate. According to the device, a high-voltage electrostatic field is used, dust particles entering the device carry negative ions, the dust particles meeting the requirements are adsorbed to the positive plate through the positive plate, then the dust particles are vibrated off from the positive plate through the vibration device and finally fall into the collection box, and therefore the purpose of screening the dust particles is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of fused corundum screening, and in particular relates to a dust particle screening device. Background Art

[0002] Fused corundum includes four categories: white corundum (WFA), dense fused corundum (DFA), sub-white corundum (FWFA), and brown corundum (BFA). It is an important raw material for making high-grade refractory materials and is also widely used in the abrasive industry. Fused corundum is made of industrial alumina or high-alumina bauxite as the main raw material, with additives added. It is smelted at a high temperature of more than 2000 degrees in an electric arc furnace and cooled and crystallized. It is then made through processes such as crushing, iron removal, and screening.

[0003] The processed corundum needs to be screened after being crushed. The particle size of corundum determines the use of corundum powder. The smaller the particle size, the higher the value. How to make the screening particle size reach the micron level has always been a technical problem. Utility Model Content

[0004] In view of the problems existing in the background technology, the utility model provides a dust particle screening device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dust particle screening device, including an outer shell, a feed port, a high-voltage electrostatic field and a positive plate, the outer shell is a square box, and a discharge port is provided on the lower end surface of the outer shell; a feed port is provided on the upper end surface of the outer shell, a high-voltage electrostatic field is provided below the feed port, a positive plate is provided below the high-voltage electrostatic field, and a collection box is provided below the positive plate.

[0006] The positive plate is a rectangular strip, which is mounted on the inner wall of the shell. The rear end of the positive plate is connected to a vibration device. A collecting port is provided below the positive plate. One end of the collecting port is connected to the inside of the shell, and the other end of the collecting port is connected to a collecting box.

[0007] The high-voltage electrostatic field is installed on the inner wall of the shell, and the high-voltage electrostatic field is connected to an external high-voltage power supply device through a line.

[0008] The beneficial effects of the utility model are as follows: the utility model provides a dust particle screening device, which uses a high-voltage electrostatic field to make the dust particles entering the device carry negative ions, uses a positive plate to adsorb dust particles that meet the requirements on the positive plate, and then uses a vibration device to vibrate the dust particles off the positive plate and finally fall into a collection box, thereby achieving the purpose of screening the dust particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the front view of the utility model.

[0010] Figure 2 It is a side view of the utility model.

[0011] In the figure: 1. outer shell, 2. feed port, 3. high voltage electrostatic field, 4. vibration device, 5. positive plate, 6. collection port, 7. collection box, 8. discharge port. DETAILED DESCRIPTION

[0012] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0013] The specific implementation mode of the utility model is further elaborated in detail below in conjunction with the accompanying drawings: a dust particle screening device, comprising a shell 1, a feed port 2, a high-voltage electrostatic field 3 and a positive plate 5, the shell 1 is a square box, and a discharge port 8 is provided on the lower end surface of the shell 1; a feed port 2 is provided on the upper end surface of the shell 1. In actual use, in order to increase the screening efficiency of the device, a plurality of parallel feed ports 2 can be provided, and the feed port 2 is an atomizing nozzle, and the feed port 2 atomizes the powder and sprays it into the shell 1; a high-voltage electrostatic field 3 is provided below the feed port 2, and the high-voltage electrostatic field 3 is installed on the inner wall of the shell 1, and the high-voltage electrostatic field 3 is connected to an external high-voltage power supply device through a line; in the present embodiment, the high-voltage electrostatic field 3 is a mesh high-voltage device, and when the dust particles pass through the high-voltage electrostatic field 3, the high-voltage electrostatic field 3 will cause the dust particles to carry a negative charge; a positive plate 5 is provided below the high-voltage electrostatic field 3, and a collecting Box 7; the positive plate 5 is a rectangular strip, the positive plate 5 is installed on the inner wall of the outer shell 1, the rear end surface of the positive plate 5 is connected to the vibration device 4, and a collecting port 6 is provided below the positive plate 5, one end of the collecting port 6 is connected to the interior of the outer shell 1, and the other end of the collecting port 6 is connected to the collecting box 7; when the equipment is running, the positive plate 5 is connected to the positive pole of direct current, so that the positive plate 5 carries positive charge, and the positive plate 5 adsorbs the dust particles carrying negative charge on the positive plate 5 through the principle of electrostatic adsorption, and then the vibration device 4 is used to knock the positive plate 5 to make the adsorbed dust particles fall off, and the fallen dust particles enter the collecting box 7 through the collecting port 6.

[0014] The device can control the amount of charge carried by the dust particles by adjusting the power of the high-voltage electrostatic field 3, and can adjust the size of the dust particles adsorbed by the positive plate 5 by controlling the power of the positive plate 5, thereby achieving the purpose of particle size screening of the corundum powder; Problems and solutions of the device: First, the production efficiency of the device is low, and the corundum powder cannot be completely screened, and a large amount of qualified powder will flow out from the discharge port 8; in order to solve this problem, the powder can be mixed multiple times and then re-put into the device for multiple screening; second, the device uses the principle of electrostatic adsorption for screening. In order to improve the production efficiency of the device, the internal working environment of the device must be kept dry.

[0015] The use process of the utility model is as follows: first, the equipment is installed; then the dried corundum powder is added into the interior of the device through the feed port 2, and the corundum powder first passes through the high-voltage electrostatic field 3, under the action of the high-voltage electrostatic field 3, the corundum dust particles are negatively charged; a part of the heavier corundum dust particles sink to the bottom of the shell 1 and flow out from the discharge port 8; a part of the lighter corundum dust particles are adsorbed on the surface of the positive plate 5 under the action of the positive charge of the positive plate 5; the vibration device 4 at the rear end of the positive plate 5 knocks the positive plate 5, so that the corundum dust particles adsorbed on the surface of the positive plate 5 fall off from the positive plate 5, and the corundum dust particles after falling off enter the collection box 7 from the collection port 6, completing the screening of the corundum dust particles.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0017] The parts not described in detail in this utility model are prior art.

Claims

1. A dust particle screening device, comprising a housing (1), a feed port (2), a high-voltage electrostatic field (3) and a positive electrode plate (5), wherein: The shell (1) is a square box body, and a discharge port (8) is provided on the lower end surface of the shell (1); a feed port (2) is provided on the upper end surface of the shell (1), a high-voltage electrostatic field (3) is provided below the feed port (2), a positive electrode plate (5) is provided below the high-voltage electrostatic field (3), and a collection box (7) is provided below the positive electrode plate (5).

2. The dust particle screening device according to claim 1, characterized in that: The positive electrode plate (5) is a rectangular strip. The positive electrode plate (5) is mounted on the inner wall of the housing (1). The rear end surface of the positive electrode plate (5) is connected to the vibration device (4). A collecting port (6) is provided below the positive electrode plate (5). One end of the collecting port (6) is connected to the interior of the housing (1), and the other end of the collecting port (6) is connected to a collecting box (7).

3. The dust particle screening device according to claim 1, characterized in that: The high-voltage electrostatic field (3) is installed on the inner wall of the housing (1), and the high-voltage electrostatic field (3) is connected to an external high-voltage power supply device via a line.

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