A crushing production line of a silicon material crusher with adjustable roll gap

Abstract

The utility model provides a kind of setting roll gap adjustable's crushing production line of silicon material crusher. Material elevator, crusher, screening machine, magnetic separator, feeder and double-layer weighing roller line are sequentially included, the crusher includes pedestal, crushing cavity, left roll, right roll, left roll drive system, right roll drive system for respectively driving left roll, right roll and variable distance drive system, the crushing cavity is set on pedestal, the position of the pedestal corresponding crushing cavity is provided with discharge port, the main body of left roll and right roll is set in crushing cavity, the end of left roll and right roll is respectively connected with corresponding slide plate slidingly connected on crushing cavity, the left roll drive system is connected with left roll, the right roll drive system is connected with right roll, the variable distance drive system is two sets, respectively set in the head end and tail end of crushing cavity, each set includes variable distance drive motor, speed reducer, coupling, T-type screw, screw nut seat, slide plate and screw nut seat.

Description

Technical Field

[0001] This utility model relates to the field of crushing technology for silicon materials and other hard and brittle materials, and in particular to a crushing production line for a silicon material crusher with an adjustable roller spacing. Background Technology

[0002] Silicon is a fundamental material in the photovoltaic and semiconductor industries, and its crushing is a crucial step in the production process. For example... Figure 4 As shown, the crusher places the edge material and large crystal pieces between two tungsten steel rollers, where they are crushed by the rotation of the rollers. The crushed material is then separated into different sizes by a sorting device. Existing crushers, including model 202110777835.8, have a fixed roller spacing, which cannot be automatically adjusted. This limits the size of the crushed crystal material. For crystal materials of different sizes, frequent manual adjustments of both rollers are required. This operation is complex, has low automation, and results in high operator workload. Utility Model Content

[0003] To address the aforementioned technical problems, this invention provides a silicon material crushing production line with adjustable roll spacing, aiming to solve the problems of low efficiency and poor accuracy in manual roll spacing adjustment in existing technologies. The technical means employed in this invention are as follows: A silicon material crushing production line with an adjustable roller pitch includes, in sequence, a material elevator, a crusher, a screening machine, a magnetic separator, a feeder, and a double-layer weighing roller conveyor. The crusher is of the adjustable roller pitch type and includes a base, a crushing chamber, a left roller, a right roller, a left roller drive system, a right roller drive system, and a variable pitch drive system for driving the left and right rollers respectively. The crushing chamber is mounted on the base, and the base has a discharge port corresponding to the position of the crushing chamber. The main bodies of the left and right rollers are disposed inside the crushing chamber, and the ends of the left and right rollers are slidably connected to corresponding parts on the crushing chamber. The slide plate is connected to the left roller, the left roller drive system is connected to the left roller, and the right roller drive system is connected to the right roller. There are two sets of variable pitch drive systems, which are respectively set at the head end and tail end of the crushing chamber. Each set includes a variable pitch drive motor, a reducer, a coupling, a T-shaped lead screw, a lead screw nut seat, a slide plate, and a lead screw nut seat. The variable pitch drive motor drives the corresponding T-shaped lead screw to rotate through the reducer and coupling. The T-shaped lead screw has a centerline as its axis, and the left and right sides are set with threaded sections with different directions of rotation. A lead screw nut is installed on both threaded sections. The lead screw nut is installed in the lead screw nut seat, and the lead screw nut seat is connected to the corresponding slide plate.

[0004] Furthermore, one of the output ports of the screening machine is equipped with a large material return conveyor, the output end of which is connected to the inlet of the crusher.

[0005] Furthermore, the crushing chamber is connected to a speed reducer mounting base and a bearing mounting base, which are used to install the speed reducer and the bearing, respectively.

[0006] Furthermore, a protective shell is installed on the outside of the crushing chamber above the base.

[0007] Furthermore, the crushing chamber is provided with a slide for mounting a sliding plate.

[0008] Furthermore, both the left roller drive system and the right roller drive system include a drive motor, a toothed belt, and a tensioning device; the toothed belt connects the output shaft of the drive motor to the toothed pulley at the end of the roller shaft, and the tensioning device includes an adjusting screw, which adjusts the tension of the toothed belt.

[0009] This invention has the following advantages: The crusher of this invention uses T-shaped lead screws with opposite rotation directions as the core transmission element. T-shaped lead screws have good self-locking properties and strong load-bearing capacity, making them suitable for adjustment mechanisms that need to withstand crushing reaction forces. Two lead screw nut seats mesh with left-hand and right-hand lead screws respectively. The lead screw nut seats ensure that the nuts can only move along the lead screw axis and cannot rotate. The sliding plate directly transmits the linear motion of the nut seats to the bearing seats of the rollers. When the motor drives the two lead screws to rotate synchronously, due to their opposite rotation directions, the two nut seats will inevitably produce synchronous, opposite, and equal-speed linear motion. This motion characteristic perfectly matches the requirement for synchronous and symmetrical movement of the two rollers during double-roller spacing adjustment. The sliding plate, as a rigid connecting component, accurately converts linear displacement into changes in roller spacing. This mechanical structure ensures the synchronicity, linearity, and positional accuracy of roller spacing adjustment, avoiding jamming or uneven loading problems caused by unilateral adjustment or asynchrony. Its structure is relatively simple and reliable, with strong load-bearing capacity. Attached Figure Description

[0010] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the main structural view of this utility model.

[0012] Figure 2 This is a schematic side view of the structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the crusher structure of this utility model.

[0014] Figure 4 This is a schematic diagram of existing technology.

[0015] Figure 5 This is a schematic diagram of the tension range adjustment of the roller drive system of this utility model.

[0016] In the diagram: 1. Base; 2. Left roller; 3. Right roller; 4. Left roller drive system; 5. Right roller drive system; 6. Variable pitch drive system; 7. Crushing chamber; 8. Slide plate; 9. T-screw; 10. Screw nut seat; 11. Reducer mounting base; 12. Bearing mounting base; 13. Toothed belt; 14. Material elevator; 15. Crusher; 16. Large material return conveyor; 17. Screening machine; 18. Magnetic separator; 19. Feeder; 20. Double-layer weighing roller conveyor. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] like Figure 1 , Figure 2 As shown in the figure, this utility model embodiment discloses a silicon material crushing production line with an adjustable roller gap, which sequentially includes a material elevator 14, a crusher 15, a screening machine 17, a magnetic separator 18, a feeder 19, and a double-layer weighing roller conveyor 20, wherein the crusher is of the adjustable roller gap type, such as... Figure 3 As shown, it includes a base, a crushing chamber, a left roller, a right roller, a left roller drive system, a right roller drive system, and a variable pitch drive system for driving the left and right rollers respectively. The crushing chamber 7 is disposed on the base 1, and the base has a discharge port corresponding to the position of the crushing chamber. The main bodies of the left roller 2 and right roller 3 are disposed inside the crushing chamber, and the ends of the left and right rollers are respectively connected to corresponding sliding plates slidably connected to the crushing chamber. The left roller drive system 4 is connected to the left roller, and the right roller drive system 5 is connected to the right roller. The variable pitch drive system... The drive system 6 consists of two sets, located at the head and tail ends of the crushing chamber, respectively. Each set includes a variable-pitch drive motor, a reducer, a coupling, a T-shaped lead screw 9, a lead screw nut seat 10, a slide plate 8, and a lead screw nut seat 10. The variable-pitch drive motor drives the corresponding T-shaped lead screw to rotate through the reducer and coupling. The T-shaped lead screw has threaded sections with different helical directions on its left and right sides, with lead screw nuts installed on both threaded sections. The lead screw nuts are installed in the lead screw nut seat, which is connected to the corresponding slide plate.

[0019] The crushing chamber assembly mainly carries silicon material and supports the rollers and variable pitch drive system. It has an opening at the bottom, through which the crushed silicon material falls into the subsequent process below the crushing chamber, namely the vibration sorting device.

[0020] Furthermore, one of the output ports of the screening machine is equipped with a bulk material return conveyor 16, the output end of which is connected to the inlet of the crusher. The bulk material return conveyor is inclined upwards, similar to the path of the material elevator 14. In some optional embodiments, an extended housing section is added above the crusher, with the output end of the material elevator 14 connected to the non-extended section and the output end of the bulk material return conveyor 16 connected to the extended housing section, preventing interference between the left and right rollers during actual production. In addition, an interface sealing structure can be added to the housing section.

[0021] In the specific production line, the material elevator 14 is used to vertically transport the raw silicon material to the feed inlet of the crusher.

[0022] Crusher 15 is the core equipment, and it adopts a double-roller structure with adjustable roller spacing.

[0023] The screening machine 17 has four layers of screens of different specifications built in, which classify the crushed silicon material according to particle size.

[0024] The material return conveyor 16 connects the large material outlet of the screening machine and the feed inlet of the crusher to realize the recycling and crushing of substandard materials.

[0025] The magnetic separator 18 removes iron impurities from silicon material through magnetic separation.

[0026] Feeder 19 temporarily stores the silicon material after magnetic separation and feeds it downstream at a uniform speed.

[0027] The double-layer weighing roller conveyor 20 receives materials from the feeder, completes the weighing record, and transports them to the next process.

[0028] like Figure 3 As shown, in this utility model, there are four magnetic separators, each with a double-layer weighing roller conveyor 20.

[0029] In operation, silicon material enters crusher 15 via elevator 14, with the roller gap pre-adjusted according to particle size requirements. The double rollers roll inwards, and the ratchet teeth crush the silicon material. The crushed material falls through a funnel at the bottom of the chamber into screening machine 17. Screening machine classifies the material by particle size; qualified material enters the corresponding magnetic separator 18; larger material is returned to crusher via return conveyor 16. After the magnetic separator removes iron impurities, the silicon material is evenly fed to weighing roller conveyor 20 via feeder 19, completing the metering and conveying process.

[0030] Furthermore, the crushing chamber is connected to a reducer mounting base 11 and a bearing mounting base 12, which are used to install the reducer and the bearing, respectively.

[0031] In this embodiment, two sets of variable-pitch drive systems 6 are distributed at the head and tail of the cavity. A single double-helix T-shaped lead screw ensures that the slide plates 8 on both sides move synchronously in opposite directions, eliminating the off-center load jamming caused by unilateral drive. The single lead screw integrates left and right helical thread sections, eliminating the need for a gear synchronization mechanism, resulting in a compact structure and transmission error that meets requirements. The roller pitch adjustment accuracy is high, and silicon materials of different particle sizes can be processed without changing the rollers.

[0032] Furthermore, a protective shell is installed on the outside of the crushing chamber above the base.

[0033] Furthermore, the crushing chamber is provided with a slide for mounting a sliding plate.

[0034] In this embodiment, the left and right roller drive systems have the same structure, both including a drive motor and a toothed belt 13 as a transmission device. The toothed belt 13 is equipped with toothed pulleys, connecting the output shaft of the drive motor to the toothed pulleys at the roller shaft end. One end of the left roller drive system is connected to the roller shaft end, and the other end is connected to the motor. The tensioning device includes an adjusting screw, which adjusts the tension of the toothed belt. Before adjustment, the tensioning screw of the motor device is loosened to adjust the roller spacing. After loosening, the tension of the transmission device disappears, no longer forming a rigid constraint on the left roller. The left roller can move freely to adjust the spacing with the right roller without being pulled or obstructed by the transmission device. After the spacing is adjusted to the correct position, the tensioning screw is tightened again, the transmission device returns to its tensioned state, and the motor can once again stably drive the left roller to rotate through the drive system.

[0035] The right roller drive system has the same structure and operation.

[0036] The rollers used in this embodiment are made of tungsten-cobalt alloy, with ratchet protrusions arranged longitudinally and transversely on their surface. When the two rollers roll inwards, they can crush the silicon material sandwiched between them, thus achieving the crushing of large pieces (rods) of silicon material. The crisscrossing tungsten steel ratchet protrusions form a mesh-like crushing tooth structure, applying multi-directional shearing force to the silicon material. Compared with the single extrusion of smooth rollers, the crushing efficiency is effectively improved.

[0037] In some alternative implementations, one end of the T-shaped lead screw 9 can be extended out of the crushing chamber 7 and a handwheel can be added. The lead screw can be driven to rotate by manually turning the handwheel, which will drive the left and right slide plates to move in opposite directions synchronously. This is suitable for small-batch, low-frequency silicon material crushing scenarios.

[0038] In some alternative implementations, fully automatic control is achieved by improving upon the manual adjustment structure as follows: A PLC controller is used as the core; the operator inputs the target roller distance on a touchscreen, and the PLC calculates the required movement distance and generates control commands. This drives the T-screw to rotate, which in turn moves the slide plate 8 via the screw nut seat.

[0039] In practical use, several different silicon materials are screened out by the screening machine and then sequentially enter the magnetic separator, feeder, and large material return conveyor. Unqualified large pieces are conveyed to the crushing chamber for further crushing via the large material return elevator, while qualified materials enter the feeder via the magnetic separator. The feeder then works in conjunction with the weighing roller conveyor to ensure that the material box meets the required weight for downstream conveying.

[0040] The screening machine consists of a screen body, screen mesh, springs, and a vibrating motor. In this embodiment, it is equipped with four layers of screen meshes of four different specifications, which can separate four sizes of crushed material. Larger pieces, which cannot be used for pulling single crystal rods, are transported back to the crusher for further crushing by a large material return conveyor.

[0041] Magnetic separators are used to separate small particles of trace iron elements in silicon material, thereby improving the purity of the silicon. Because the rollers are made of tungsten-cobalt alloy, there is always wear during the extrusion of silicon material, meaning that trace amounts fall into the silicon material. Magnetic substances may also be mixed in during the conveying process before crushing, which is unacceptable and therefore needs to be separated.

[0042] After magnetic separation, the silicon material enters the feeder, which is essentially a device that carries the silicon material. It is then sent to a double-layer weighing track for weighing and transported to the next process. The weighing function records the weight of the silicon material passing through, providing weight data for subsequent reference.

[0043] The advantages of this invention are that the gap between the two rollers is automatically adjustable, enabling the crushing of silicon materials of different specifications without the need to replace the rollers. It improves automation, reduces the labor intensity of operators changing rollers in existing technologies, and is highly efficient. For the same output of silicon materials of different specifications, this invention requires a smaller footprint.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A crushing production line for a silicon material crusher with adjustable roll spacing, characterized in that, The system sequentially includes a material elevator, a crusher, a screening machine, a magnetic separator, a feeder, and a double-layer weighing roller conveyor. The crusher is of adjustable roller spacing and includes a base, a crushing chamber, a left roller, a right roller, a left roller drive system, a right roller drive system, and a variable-pitch drive system for driving the left and right rollers respectively. The crushing chamber is mounted on the base, and the base has a discharge port corresponding to the position of the crushing chamber. The main bodies of the left and right rollers are located inside the crushing chamber, and the ends of the left and right rollers are respectively connected to corresponding sliding plates slidably connected to the crushing chamber. The left roller drive system... The system is connected to the left roller, and the right roller drive system is connected to the right roller. The variable pitch drive system consists of two sets, which are respectively set at the head end and tail end of the crushing chamber. Each set includes a variable pitch drive motor, a reducer, a coupling, a T-shaped lead screw, a lead screw nut seat, a slide plate, and a lead screw nut seat. The variable pitch drive motor drives the corresponding T-shaped lead screw to rotate through the reducer and coupling. The T-shaped lead screw has threaded sections with different helical directions on its left and right sides with its center line as the axis. A lead screw nut is installed on both threaded sections. The lead screw nut is installed in the lead screw nut seat, and the lead screw nut seat is connected to the corresponding slide plate.

2. The crushing production line of the silicon material crusher with adjustable roll gap as described in claim 1, characterized in that, One of the output ports of the screening machine is equipped with a large material return conveyor, and the output end of the large material return conveyor is connected to the inlet of the crusher.

3. The crushing production line of the silicon material crusher with adjustable roll gap according to claim 1, characterized in that, The crushing chamber is connected to a speed reducer mounting base and a bearing mounting base, which are used to install the speed reducer and the bearing, respectively.

4. The crushing production line of the silicon material crusher with adjustable roll gap according to claim 1, characterized in that, A protective shell is installed on the outside of the crushing chamber above the base.

5. The crushing production line of the silicon material crusher with adjustable roll gap according to claim 1, characterized in that, The crushing chamber is provided with a slide for mounting a sliding plate.

6. The crushing production line of the silicon material crusher with adjustable roll gap according to claim 1, characterized in that, Both the left roller drive system and the right roller drive system include a drive motor, a toothed belt, and a tensioning device; the toothed belt connects the output shaft of the drive motor to the toothed pulley at the end of the roller shaft, and the tensioning device includes an adjusting screw, which adjusts the tension of the toothed belt.

Images