Disc shaker

Abstract

The utility model provides a disc vibrating screen, base, vibrating motor and spring, the top of spring is fixed with support round plate, is provided with first sleeve, second sleeve and sieve cover in proper order to the up of support round plate, support round plate and first sleeve fixed connection, install the circular screen frame in second sleeve, the upper surface profile of circular screen frame is 'dome shape', six reinforcing bars are fixed on the circular screen frame, the sieve net is fixed in the top of circular screen frame and six reinforcing bars, make the sieve net present the shape of high in the middle and low on both sides, two first discharge gates are symmetrically equipped with two first discharge gates in the both sides of second sleeve, two first discharge gates respectively correspond the low place of sieve net, the top of sieve cover is equipped with feeding port, the utility model has the advantages of: through the dome design to sieve net, have reduced the stay time of polysilicon granular material on the sieve on the sieve, have reduced the wear and tear of polysilicon granular material on the sieve, thereby have reduced the turbidity of polysilicon granular material, have improved polysilicon granular material quality.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically to a disc vibrating screen. Background Technology

[0002] Polycrystalline silicon granules are a semiconductor material that is brittle and easily worn at room temperature. A disc vibrating screen is needed in the screening process. The disc vibrating screen is a high-precision screening device that can perform multi-stage filtration by setting 2-3 layers of circular screens.

[0003] However, most existing circular screens are horizontal. During the screening process, the polycrystalline silicon particles repeatedly bounce on the screen, which prevents the polycrystalline silicon particles on the screen from falling off the outlet quickly. The screen wears on the polycrystalline silicon particles for a long time, which increases the turbidity of the polycrystalline silicon particles (referring to the degree of turbidity of the polycrystalline silicon particles after being screened and placed in water), resulting in a decrease in the quality of the polycrystalline silicon particles. Utility Model Content

[0004] The purpose of this invention is to provide a disc vibrating screen.

[0005] This utility model is implemented by the following technical solution: A disc vibrating screen includes a base, a vibrating motor, and a spring. A supporting circular plate is fixed to the top of the spring. A first sleeve, a second sleeve, and a screen cover are sequentially arranged on the supporting circular plate. The supporting circular plate and the first sleeve are fixedly connected. A circular screen frame is installed inside the second sleeve. The upper surface of the circular screen frame has an arched shape. Six reinforcing ribs are fixed on the circular screen frame. A screen mesh is fixed above the circular screen frame and the six reinforcing ribs, making the screen mesh high in the middle and low on both sides. Two first discharge ports are symmetrically arranged on both sides of the second sleeve, and the two first discharge ports correspond to the two low points of the screen mesh. A feed port is provided on the top of the screen cover.

[0006] Preferably, the bottom surface of the inner side of the first sleeve is conical, and a second discharge port is provided on one side of the first sleeve.

[0007] Preferably, the edges of the first sleeve, the second sleeve, and the screen cover are all provided with flanges. The outer clamps of the two flanges that contact the first sleeve and the second sleeve have two retaining rings, and the outer clamps of the two flanges that contact the second sleeve and the screen cover also have two retaining rings. The two mating retaining rings are fixedly connected by bolts, so that the first sleeve, the second sleeve, and the screen cover are fixed to each other.

[0008] Preferably, a limiting ring is fixed inside the second sleeve, and the bottom of the circular screen frame is engaged inside the limiting ring.

[0009] The advantages of this invention are: by designing the screen in an arched shape, the falling polycrystalline silicon particles slide quickly down along both sides of the screen and are screened out, thereby reducing the residence time of the polycrystalline silicon particles on the screen, reducing the wear of the polycrystalline silicon particles on the screen, thereby reducing the turbidity of the polycrystalline silicon particles and improving the quality of the polycrystalline silicon particles. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 2 Sectional view at point A in the middle; Figure 4 This is a schematic diagram of the second sleeve; Figure 5 This is a partial structural diagram; Figure 6 This is a schematic diagram of the clasp structure.

[0011] In the diagram: 1. Base, 2. Vibration motor, 3. Spring, 4. Support plate, 5. First sleeve, 5.1. Second discharge port, 6. Second sleeve, 6.1. First discharge port, 6.2. Limiting ring, 7. Circular screen frame, 8. Reinforcing rib, 9. Screen mesh, 10. Screen cover, 10.1. Feed inlet, 11. Snap ring. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figures 1 to 6 As shown, a disc vibrating screen includes a base 1, a vibrating motor 2, and a spring 3. A supporting circular plate 4 is fixed to the top of the spring 3. A first sleeve 5, a second sleeve 6, and a screen cover 10 are arranged sequentially on the supporting circular plate 4. The edges of the first sleeve 5, the second sleeve 6, and the screen cover 10 are all provided with flanges. The outer sides of the two flanges that contact the first sleeve 5 and the second sleeve 6 are clamped with two retaining rings 11. The outer sides of the two flanges that contact the second sleeve 6 and the screen cover 10 are also clamped with two retaining rings 11. The two mating retaining rings 11 are fixedly connected by bolts, so that the first sleeve 5, the second sleeve 6, and the screen cover 10 are fixed to each other. The top of the screen cover 10 is provided with a feed inlet 10.1, which is located above the center of the screen mesh 9.

[0014] The supporting circular plate 4 and the first sleeve 5 are fixedly connected. The bottom surface of the inner side of the first sleeve 5 is conical, and a second discharge port 5.1 is provided on one side of the first sleeve 5.

[0015] A limiting ring 6.2 is fixed inside the second sleeve 6, and the bottom of the circular screen frame 7 is engaged within the limiting ring 6.2. The upper surface of the circular screen frame 7 has an arched shape, and six reinforcing ribs 8 are fixed on the circular screen frame 7. A screen 9 is fixed above the circular screen frame 7 and the six reinforcing ribs 8, making the screen 9 have a shape that is high in the middle and low on both sides, i.e., arched. Two first discharge ports 6.1 are symmetrically provided on both sides of the second sleeve 6, and the two first discharge ports 6.1 correspond to the two low points of the screen 9 respectively.

[0016] Working principle: When the disc vibrating screen is running, polycrystalline silicon particles fall onto the screen 9 from the feed inlet 10.1. With the rapid vibration of the vibrating motor 2, and because the surface of the screen 9 is arched, the falling polycrystalline silicon particles slide quickly down along both sides of the screen 9 for screening, and vibrate out from the two first discharge ports 6.1. This reduces the residence time of the polycrystalline silicon particles on the screen 9, reduces the wear of the polycrystalline silicon particles on the screen, thereby reducing the turbidity of the polycrystalline silicon particles and improving the quality of the polycrystalline silicon particles.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disc vibrating screen, comprising a base (1), a vibrating motor (2), and a spring (3), characterized in that, The top of the spring (3) is fixed with a support circular plate (4). The support circular plate (4) is provided with a first sleeve (5), a second sleeve (6) and a screen cover (10) in sequence. The support circular plate (4) and the first sleeve (5) are fixedly connected. A circular screen frame (7) is installed inside the second sleeve (6). The upper surface of the circular screen frame (7) is "arched". Six reinforcing ribs (8) are fixed on the circular screen frame (7). A screen (9) is fixed above the circular screen frame (7) and the six reinforcing ribs (8), so that the screen (9) is high in the middle and low on both sides. Two first discharge ports (6.1) are symmetrically provided on both sides of the second sleeve (6). The two first discharge ports (6.1) correspond to the two low points of the screen (9) respectively. The top of the screen cover (10) is provided with a feed port (10.1).

2. A disc vibrating screen according to claim 1, characterized in that, The bottom surface of the inner side of the first sleeve (5) is conical, and a second discharge port (5.1) is provided on one side of the first sleeve (5).

3. A disc vibrating screen according to claim 1, characterized in that, The first sleeve (5), the second sleeve (6) and the screen cover (10) are all provided with flanges at their edges. The two flanges that contact the first sleeve (5) and the second sleeve (6) have two retaining rings (11) on their outer sides. The two flanges that contact the second sleeve (6) and the screen cover (10) also have two retaining rings (11) on their outer sides. The two retaining rings (11) that come into contact with each other are fixedly connected by bolts, so that the first sleeve (5), the second sleeve (6) and the screen cover (10) are fixed to each other.

4. A disc vibrating screen according to claim 1, characterized in that, A limiting ring (6.2) is fixed inside the second sleeve (6), and the bottom of the circular screen frame (7) is engaged inside the limiting ring (6.2).

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