A discharge trough for an automated silicon material screening machine
By designing the discharge chute of the automated silicon material screening machine and using tilt compensation and flow control baffles to regulate the silicon material flow rate, the problem of silicon material accumulation during the discharge of the screening machine was solved, thereby improving the silicon material particle size qualification rate and screening efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOHHOT OUTONG ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-04-01
- Publication Date
- 2026-05-26
AI Technical Summary
In the production of monocrystalline silicon, silicon material tends to accumulate on one side when it is discharged from the screening machine, which increases the difficulty of subsequent screening and makes it difficult to effectively separate silicon material with unqualified particle size.
Design an automated silicon material screening machine discharge chute that uses tilt compensation to ensure uniform silicon material distribution and performs secondary screening using a screen. Combined with a flow control baffle and adjustment mechanism, the silicon material flow rate is adjusted to extend the screening time on the screen.
This method achieves uniform distribution of silicon material within the tank, improves the particle size qualification rate, and enhances screening efficiency and particle size control.
Smart Images
Figure CN224272140U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of silicon material screening and processing technology, specifically to a discharge trough for an automated silicon material screening machine. Background Technology
[0002] Monocrystalline silicon edge trimmings are waste materials generated during the cutting process in monocrystalline silicon production. After cleaning and crushing, the waste materials can be reused in the monocrystalline silicon production process, forming a closed loop of recycling.
[0003] After the waste is crushed by a jaw crusher, the crushed silicon material is transported to a three-stage screening machine for grading. Due to the characteristics of silicon material, its irregular shape, and the influence of the amount of silicon material, during the screening process, when the silicon material is in the secondary screening stage, some of the small-diameter silicon material that has not yet entered the next stage of screening will be discharged along with the large-particle silicon material in the secondary screening stage.
[0004] Because the screening machine moves forward, the silicon material screened by the screening machine will eventually accumulate at the discharge position at the front of the screening machine. When the screening machine discharges from the inside, the silicon material will be discharged first along the side closest to the discharge port, causing the silicon material to accumulate and be discharged along one side of the tank, making subsequent secondary screening more difficult. Utility model content:
[0005] To address the shortcomings of existing technologies, this utility model provides a discharge trough for an automated silicon material screening machine. The trough avoids unilateral accumulation of silicon material through tilt compensation, ensuring uniform distribution within the trough. Furthermore, it performs secondary screening using a screen to separate some smaller silicon material particles, thereby improving the silicon material particle size qualification rate.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A discharge trough for an automated silicon material screening machine includes a trough body, a screen, a filter media outlet, a flow control baffle, and a discharge flange. The trough body is movably connected to the lower part of the discharge flange. The opening of the trough body is perpendicular to the flow direction of the silicon material inside the screening machine. The side of the trough body near the front end of the screening machine is inclined downwards. The discharge end of the trough body is also inclined downwards. A screen is provided on the bottom of the trough body at the position corresponding to the discharge port of the screening machine. A filter media outlet is provided below the screen. A flow control baffle is mounted on the side of the trough body near the discharge end.
[0008] Preferably, one side of the feeding flange is hinged to the movable plate; an adjusting plate is fixed to the outer back of the corresponding groove of the feeding flange; the adjusting plate is provided with an arc-shaped groove; the hinge point of the arc-shaped groove and the movable plate is at the same center; a guide sleeve is fixed to the back of the groove; the guide sleeve rotates along the arc-shaped groove and drives the groove to complete the tilt angle adjustment; a clamping knob is provided inside the guide sleeve; the screw of the clamping knob passes through the arc-shaped groove and is threadedly connected to the guide sleeve.
[0009] Preferably, a crossbeam is mounted on the side of the trough near the discharge end; a flow control baffle is movably inserted on the crossbeam; sliding rods are provided on both sides of the flow control baffle; movable perforated plates are provided on both sides of the crossbeam; the sliding rods move up and down along the movable holes on the movable perforated plates; and an adjustment knob is provided on the outer side of the movable perforated plates.
[0010] Preferably, the discharge flange is connected to the secondary discharge port of the screening machine by bolts.
[0011] Preferably, a material box is provided below both the filter media outlet and the discharge side of the tank.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. The side of the tank closest to the front of the screening machine is tilted downwards, which causes the silicon material to move laterally in the tank. This prevents material from accumulating on one side of the tank during the shaking of the screening machine. The silicon material will be evenly distributed along the tilted side of the tank, which is beneficial for the screen to screen smaller silicon particles.
[0014] 2. The discharge end of the tank is inclined downwards to facilitate the flow and discharge of silicon material. The flow rate is limited by the flow control baffle to increase the time the silicon material spends above the screen.
[0015] 3. The feeding flange and the tank are connected by a movable plate; the tilt of the tank can be adjusted by rotating around the hinge point to facilitate uniform distribution of silicon material.
[0016] 4. The height adjustment of the flow control baffle can control the discharge flow rate, extend the time of silicon material in the tank to a certain extent, improve the utilization rate of the screen, and effectively screen out particles that are too small and do not meet the requirements. Attached image description:
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1This is a schematic diagram of the connection relationship of the screening machine of this utility model.
[0019] Figure 2 This is a schematic diagram of the connection relationship of the groove body in this utility model.
[0020] Figure 3 This is a schematic diagram of the inclined structure of the trough of this utility model.
[0021] Figure 4 This is a schematic diagram of the back structure of the tank body of this utility model.
[0022] Figure 5 This is a schematic diagram of the connection relationship of the adjustment plate of this utility model.
[0023] Figure 6 This is a schematic diagram showing the positional relationship of the material bins in this utility model.
[0024] In the diagram, 1 is the tank, 2 is the screen, 3 is the filter media outlet, 4 is the flow control baffle, 5 is the screening machine, 5.1 is the discharge port, 6 is the discharge flange, 7 is the movable plate, 8 is the arc groove, 9 is the guide sleeve, 10 is the clamping knob, 11 is the crossbar, 12 is the slide bar, 13 is the movable perforated plate, 14 is the material box, 15 is the adjusting knob, and 16 is the adjusting plate. Detailed implementation method:
[0025] like Figure 1-3 As shown, an automated silicon material screening machine discharge trough is fixedly connected by a discharge flange 6, which is bolted to the secondary discharge port 5.1 of the screening machine 5. A trough body 1 is movably connected below the discharge flange 6. The opening of the trough body 1 is perpendicular to the flow direction of the silicon material inside the screening machine 5. The side of the trough body 1 near the front end of the screening machine 5 is inclined downwards. This inclination angle prevents silicon material from accumulating on one side of the trough body, ensuring uniform distribution within the trough. The discharge end of the trough body 1 is inclined downwards. A screen 2 is installed on the bottom of the trough body 1 corresponding to the discharge port 5.1 of the screening machine 5. A filter outlet 3 is located below the screen 2. When the uniformly distributed silicon material passes through the screen 2, smaller particles are separated. A flow control baffle 4 is installed on the side of the trough body 1 near the discharge end to control the flow rate of silicon material within the trough to a certain extent and extend the time the silicon material remains above the screen 2 to a certain extent.
[0026] like Figure 4-5As shown, one side of the discharge flange 6 is hinged to the movable plate 7; an adjusting plate 16 is fixed to the outer side of the back of the discharge flange 6 corresponding to the trough 1; the adjusting plate 16 is provided with an arc-shaped groove 8; the hinge point of the arc-shaped groove 8 and the movable plate 7 is at the same center, and when the trough 1 rotates, the hinge point is the center of rotation, thereby achieving the tilting of both sides of the trough. A guide sleeve 9 is fixed to the back of the trough 1; the guide sleeve 9 rotates along the arc-shaped groove 8 and drives the trough 1 to complete the tilt angle adjustment; a clamping knob 10 is provided inside the guide sleeve 9; the screw of the clamping knob 10 passes through the arc-shaped groove 8 and is threadedly connected to the guide sleeve 9. Loosening the clamping knob 10 can rotate to adjust the tilt angle of both sides of the trough, so as to adapt to the tilt and vibration of the screening machine 5.
[0027] like Figure 3-6 As shown, the following optimizations are made: A horizontal frame 11 is mounted on the side of the tank 1 near the discharge end; a flow control baffle 4 is movably inserted into the horizontal frame 11; sliding rods 12 are provided on both sides of the flow control baffle 4; movable perforated plates 13 are provided on both sides of the horizontal frame 11; the sliding rods 12 move up and down along the movable holes on the movable perforated plates 13; an adjustment knob 15 is provided on the outer side of the movable perforated plates 13. The flow control baffle 4 limits the discharge flow rate. Considering the collection of discharged silicon material, a material box 14 is provided below both the filter outlet 3 and the discharge side of the tank 1. Unless otherwise described, the fixing method is welded or threaded using common technical means employed by industry professionals.
[0028] The working principle is as follows:
[0029] The silicon material screening machine has an internal screen. During the screening and shaking process, the silicon material eventually accumulates at one end of the screening machine's discharge port. In traditional tanks, the silicon material accumulates along the nearest single side of the tank during discharge, resulting in uneven distribution. With the tank tilted on both sides, the silicon material is guided and distributed along the inclined surface. The silicon material first contacts the screen 2 at the bottom of the tank 1, achieving even distribution and completing secondary screening. The tank angle is adjusted by the clamping knob 10, and the flow control baffle is raised and lowered by the adjusting knob 15.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A discharge chute for an automated silicon material screening machine, characterized in that: It includes a tank, a screen, a filter media outlet, a flow control baffle, and a discharge flange; the tank is movably connected to the lower part of the discharge flange; the opening of the tank is perpendicular to the flow direction of the silicon material inside the screening machine; the side of the tank near the front end of the screening machine is inclined downwards; the discharge end of the tank is inclined downwards; a screen is provided on the bottom of the tank corresponding to the discharge port of the screening machine; a filter media outlet is provided below the screen; and a flow control baffle is mounted on the side of the tank near the discharge end.
2. The discharge trough of an automated silicon material screening machine according to claim 1, characterized in that: One side of the feeding flange is hinged to the movable plate; an adjusting plate is fixed to the outer back of the corresponding groove of the feeding flange; the adjusting plate is provided with an arc-shaped groove; the hinge point of the arc-shaped groove and the movable plate is at the same center; a guide sleeve is fixed to the back of the groove; the guide sleeve rotates along the arc-shaped groove and drives the groove to complete the tilt angle adjustment; a clamping knob is provided inside the guide sleeve; the screw of the clamping knob passes through the arc-shaped groove and is threadedly connected to the guide sleeve.
3. The discharge chute of an automated silicon material screening machine according to claim 2, characterized in that: A crossbeam is mounted on the side of the trough near the discharge end; a flow control baffle is movably inserted on the crossbeam; sliding rods are provided on both sides of the flow control baffle; movable perforated plates are provided on both sides of the crossbeam; the sliding rods move up and down along the movable holes on the movable perforated plates; an adjustment knob is provided on the outer side of the movable perforated plates.
4. The discharge chute of an automated silicon material screening machine according to claim 1, characterized in that: The discharge flange is bolted to the secondary discharge port of the screening machine.
5. The discharge trough of an automated silicon material screening machine according to claim 1, characterized in that: Both the filter media outlet and the discharge side of the tank are equipped with material boxes.