CN218915793U - Conveyor belt type drying device for silicon crushed aggregates - Google Patents
Conveyor belt type drying device for silicon crushed aggregates Download PDFInfo
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- CN218915793U CN218915793U CN202222960281.8U CN202222960281U CN218915793U CN 218915793 U CN218915793 U CN 218915793U CN 202222960281 U CN202222960281 U CN 202222960281U CN 218915793 U CN218915793 U CN 218915793U
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- drying chamber
- discharging hopper
- crushed aggregates
- drying
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Abstract
The utility model discloses a conveyor belt type drying device for silicon crushed aggregates, which is applicable to a drying system for the silicon crushed aggregates, and belongs to the technical field of solar-grade polycrystalline silicon production. The device comprises a drying chamber, a conveyor belt and at least two high-purity nitrogen air shafts, wherein the high-purity nitrogen air shafts are distributed on two sides of the conveyor belt; the upper part of the drying chamber is provided with a drying chamber feed inlet, a discharging hopper I is arranged at the position of the drying chamber feed inlet, the discharging hopper I is positioned at the front side of a station of the conveyor belt feed section, and an air outlet on a high-purity nitrogen air shaft is positioned at one side between the discharging hopper I and the conveyor belt feed section; a discharging hopper II is arranged at the discharging section of the conveyor belt, a silicon crushed aggregates receiver is arranged at the rear side of a station of the discharging hopper II, the silicon crushed aggregates receiver is arranged at the lower part of the drying chamber, and an air outlet on the opposite-side high-purity nitrogen air shaft is positioned at one side between the discharging hopper II and the silicon crushed aggregates receiver; the high-purity nitrogen air drying treatment is carried out on the silicon crushed aggregates in the blanking, transferring and/or discharging states, so that the problems that the existing wet silicon crushed aggregates are low in drying efficiency, poor in quality, high in energy consumption, incapable of realizing continuous production and the like are effectively solved.
Description
Technical Field
The utility model relates to a drying device, in particular to a conveyor belt type drying device for silicon crushed aggregates, and belongs to the technical field of solar grade polysilicon production.
Background
Before leaving the factory, the polysilicon finished product is required to be crushed (manually or mechanically), sorted, packaged and the like, wherein silicon crushed aggregates are generated in the crushing process, and the sizes of the silicon crushed aggregates are concentrated to be 1-3mm or 3-8mm. Since the silicon scrap cannot be used directly and, in addition, requires space for stacking, it is generally re-sorted, washed, dried and packed and then sold in grades. At present, for the drying of the cleaned silicon crushed aggregates, a box type infrared radiation heating method is often adopted, namely a heating pipe is heated in a closed box body, and the silicon crushed aggregates are heated in a heat conduction mode, so that the moisture on the surfaces of the silicon crushed aggregates volatilizes; and the forced fan is additionally arranged, so that the aim of drying is fulfilled.
However, in the heating process of the wet silicon crushed aggregates, a large amount of water is accumulated inside the crushed aggregates due to the high density of the wet silicon crushed aggregates, so that the heating time is longer, the inside of the crushed aggregates is not easy to dry, and dew is easy to generate.
The prior art CN207439097U discloses a novel belt dryer for drying silicon carbide micro powder, which comprises a feeding port, a first drying chamber, a second drying chamber, a third drying chamber, a transition chamber, a cooling chamber, a driving sprocket, a transmission chain, a conveyer belt and a distributing device; CN209944951U discloses a drying device for crystalline silicon of solar cell, which comprises a drying box, wherein a feeding conveyer belt, a discharging conveyer belt, a transition conveyer belt and a motor for driving the three conveyer belts to synchronously work are arranged in the drying box, and the drying device is mainly suitable for double-sided drying of silicon wafers.
Although the prior art discloses corresponding drying equipment, the drying efficiency and quality of the cleaned silicon crushed aggregates cannot be effectively solved, continuous production cannot be well realized, and the problems of high energy consumption and the like are solved.
Disclosure of Invention
The utility model provides a conveyor type drying device for silicon crushed aggregates, which is based on the fact that the sizes of the existing silicon crushed aggregates are concentrated at 1-3mm or 3-8mm (on the premise that the cleaned wet silicon crushed aggregates are agglomerated and are not easy to fly and disperse by wind after being dried) and the conveyor type conveying is used for carrying out high-purity nitrogen wind drying treatment on the silicon crushed aggregates in the blanking, transferring and/or discharging states, so that the problems that the existing wet silicon crushed aggregates are low in drying efficiency, poor in quality and high in energy consumption, continuous production cannot be realized and the like are effectively solved. In order to achieve the technical purpose, the following technical scheme is provided:
a conveyor belt type drying device for silicon crushed aggregates comprises a drying chamber, a conveyor belt arranged in the drying chamber and at least two high-purity nitrogen air shafts, wherein the high-purity nitrogen air shafts are distributed on two sides of the conveyor belt;
the upper part of the drying chamber is provided with a drying chamber feed inlet, a discharging hopper I is arranged at the position of the drying chamber feed inlet, the discharging hopper I is positioned at the front side of a station of the conveyor belt feed section, and an air outlet on a high-purity nitrogen air shaft is positioned at one side between the discharging hopper I and the conveyor belt feed section; a discharging hopper II is arranged at the discharging section of the conveyor belt, a silicon crushed aggregates receiver is arranged at the rear side of a station of the discharging hopper II, the silicon crushed aggregates receiver is arranged at the lower part of the drying chamber, and an air outlet on the opposite-side high-purity nitrogen air shaft is positioned at one side between the discharging hopper II and the silicon crushed aggregates receiver;
a channel for continuously conveying and drying the silicon crushed aggregates in the drying chamber is formed among the feeding hole of the drying chamber, the discharging hopper I, the conveying belt and the discharging hopper II.
Further, temperature and humidity sensors are arranged in the discharging hopper I and the discharging hopper II, an air valve is arranged at an air outlet, and the air valve is interlocked with the temperature and humidity sensors through electric signals.
Further, the number of the conveying belts is three, and the conveying belts are longitudinally arranged in the drying chamber.
Further, the distance between the adjacent conveyor belts is 45-60cm, the length of the conveyor belt is 2-3m, and the conveying bandwidth is 45-60cm.
Further, the conveyor belt is a high-temperature-resistant and abrasion-resistant conveyor belt.
Further, the station front side of conveyer belt drying device is provided with tunnel type conveying mechanism, and tunnel type conveying mechanism's station front side is provided with the cloth machine, and the discharge gate of cloth machine is located one side of tunnel type conveyer belt feed section, conveyer belt discharge section and drying chamber feed inlet intercommunication, and hopper I sets up in conveyer belt discharge section department promptly.
In the technical scheme, according to actual demands, a high-purity nitrogen air shaft is connected with a high-purity hot nitrogen pipe, and a hot air source is provided for the high-purity nitrogen air shaft.
The technical scheme relates to the relations of the front side of the station, the rear side of the station, two sides, upper part, position, lower part, inner part, one side, opposite side, longitudinal direction and the like, which are defined according to the actual use state, are conventional terms in the technical field and are also conventional terms in the actual use process of the operator in the field.
By adopting the technical scheme, the beneficial technical effects brought are as follows:
according to the utility model, based on the transportation of the cleaned wet silicon crushed aggregates in the drying chamber, the high-purity nitrogen air shafts are particularly arranged at the two sides of the conveyor belt, and the silicon crushed aggregates in the blanking, transferring and/or discharging state are dried by the air in the high-purity nitrogen air shafts, so that the drying efficiency and quality of the drying device are improved, and meanwhile, the heat consumption of the drying device is reduced;
the utility model can continuously feed, dry and discharge, does not need drying waiting and the like, and further realizes continuous production better.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view (I) of the working state arrangement of the present utility model;
FIG. 3 is a schematic view of the working state layout (II) of the present utility model;
FIG. 4 is a cross-sectional view (A-direction) of a tunnel conveyor according to the present utility model;
in the figure, 1, drying chamber, 2, conveyer belt, 3, high purity nitrogen gas air shaft, 4, drying chamber feed inlet, 5, lower hopper I, 6, the air outlet, 7, lower hopper II, 8, silicon crushed aggregates receiver, 9, tunnel type conveying mechanism, 10, cloth machine.
Detailed Description
In the following, it is obvious that the embodiments described are only some embodiments of the present utility model, but not all embodiments, by clearly and completely describing the technical solutions in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1: a conveyor belt 2 type drying device for silicon crushed aggregates comprises a drying chamber 1, a conveyor belt 2 and high-purity nitrogen air shafts 3, wherein the conveyor belt 2 and the high-purity nitrogen air shafts 3 are arranged in the drying chamber 1, and the high-purity nitrogen air shafts 3 are at least two and distributed on two sides of the conveyor belt 2;
the upper part of the drying chamber 1 is provided with a drying chamber feed inlet 4, a discharging hopper I5 is arranged at the position of the drying chamber feed inlet 4, the discharging hopper I5 is positioned at the front side of a station of a feed section of the conveyor belt 2, an air outlet 6 on the high-purity nitrogen air shaft 3 is positioned at one side between the discharging hopper I5 and the feed section of the conveyor belt 2, and the drying treatment is carried out on the silicon crushed aggregates in the discharging state by virtue of air in the high-purity nitrogen air shaft 3, so that the drying efficiency and the drying quality of the drying device are improved;
a discharging hopper II 7 is arranged at the discharging section of the conveyor belt 2, a silicon crushed aggregates receiver 8 is arranged at the rear side of a station of the discharging hopper II 7, the silicon crushed aggregates receiver 8 is arranged at the lower part of the drying chamber 1, an air outlet 6 on the opposite side high-purity nitrogen air shaft 3 is positioned at one side between the discharging hopper II 7 and the silicon crushed aggregates receiver 8, and the drying treatment is carried out on the silicon crushed aggregates in the discharging state by means of wind in the high-purity nitrogen air shaft 3, so that the drying efficiency and the drying quality of the drying device are improved;
wherein, the conveyer belt 2 is horizontal setting, is vertical distribution in drying chamber 1 between drying chamber feed inlet 4, lower hopper I5, conveyer belt 2, lower hopper II 7 and the crushed silicon material receiver 8. And a channel for continuously conveying and drying the silicon crushed aggregates in the drying chamber 1 is formed among the drying chamber feed inlet 4, the discharging hopper I5, the conveyor belt 2 and the discharging hopper II 7.
According to actual demands, the high-purity nitrogen air shaft 3 is connected with a high-purity hot nitrogen pipe, and a hot air source is provided for the high-purity nitrogen air shaft 3.
In this embodiment, the working procedure involved includes:
1. the wet silicon crushed aggregates in the feed inlet 4 of the drying chamber are discharged through the discharge hopper I5 and fall on the conveyor belt 2, and in the falling process, high-purity nitrogen air at the air outlet 6 contacts the wet silicon crushed aggregates to take away the moisture in the wet silicon crushed aggregates, and meanwhile, the agglomerated wet silicon crushed aggregates are blown away and then spread on the conveyor belt 2, so that the subsequent drying is facilitated;
2. after the silicon crushed aggregates are conveyed from the feeding section of the conveyor belt 2 to the discharging section of the conveyor belt 2, the silicon crushed aggregates are discharged through the discharging hopper II 7, namely, the silicon crushed aggregates fall into the silicon crushed aggregates receiver 8, and in the falling process, high-purity nitrogen air at the air outlet 6 contacts with the silicon crushed aggregates again, so that moisture in the silicon crushed aggregates is further taken away, that is, the re-drying of the silicon crushed aggregates is realized, and further drying efficiency and drying quality are improved.
Example 2
On the basis of embodiment 1, in order to further improve drying efficiency and quality and reduce energy consumption, the embodiment controls the air volume in the high-purity nitrogen air shaft 3, and the specific scheme includes:
temperature and humidity sensors are arranged in the discharging hopper I5 and the discharging hopper II 7, an air valve is arranged at the air outlet 6, the air valve and the temperature and humidity sensors are interlocked through electric signals, and when the humidity of the silicon crushed aggregates in the discharging hopper I5 and/or the discharging hopper II 7 is high, a PLC system in the production line controls the air valve to increase the air quantity of the air outlet 6 on the high-purity nitrogen air shaft 3 so as to meet the drying requirement of the wet silicon crushed aggregates; when the humidity of the silicon crushed aggregates in the discharging hopper I5 and/or the discharging hopper II 7 is smaller (namely, the set value is met) or the temperature is higher, a PLC system in the production line controls an air valve to adjust the air quantity of the air outlet 6 on the high-purity nitrogen air shaft 3, so that the energy consumption requirement is reduced.
According to actual demands, a temperature and humidity sensor interlocked with the electric signal of the air valve can be arranged on the conveyor belt 2, namely, the temperature and humidity of the silicon crushed aggregates are monitored in multiple aspects, so that the air quantity is regulated, and the energy-saving aim is fulfilled.
Example 3
On the basis of the embodiments 1-2, the present embodiment further defines the conveyor belt 2 in the drying chamber 1 to further explain the present technical solution.
Wherein, the conveyor belts 2 are three, and are longitudinally arranged in the drying chamber 1, and similarly, when the silicon crushed aggregates are transferred between the conveyor belts 2 and the conveyor belts, the corresponding discharging hoppers can be arranged, and the air outlets 6 are correspondingly arranged at the sides of the discharging hoppers, so that the silicon crushed aggregates in a transferring state (namely a dropping state) are dried.
In addition, the distance between the adjacent conveyor belts 2 is 45-60cm, the length of the conveyor belts 2 is 2-3m, the width of the conveyor belts 2 is 45-60cm, and the arrangement is controlled in the limited space of the drying chamber 1, so that the silicon crushed aggregates are effectively dried.
The conveyor belt 2 is a high temperature resistant and wear resistant conveyor belt 2, such as: the conveyer belt 2 of polypropylene material, the conveyer belt 2 of polyurethane material to improve the life of equipment, and then guarantee the stability and the continuity of stoving process.
Example 4
On the basis of the embodiments 1-3, the arrangement of the drying device is further limited in the embodiment, so that continuous treatment of the silicon crushed aggregates is realized on the premise of improving the drying efficiency and the drying quality.
As shown in fig. 2-4: the station front side of the conveyor belt 2 type drying device is provided with a tunnel type conveying mechanism 9, the station front side of the tunnel type conveying mechanism 9 is provided with a distributing machine 10, a discharge hole of the distributing machine 10 is positioned on one side of a tunnel type conveying belt feeding section, the conveying belt discharging section is communicated with a drying chamber feeding hole 4, and a discharging hopper I5 is arranged at the conveying belt discharging section.
Wherein, the arrangement of the distributor 10 ensures that the silicon crushed aggregates are uniformly distributed into the tunnel conveying mechanism 9 and then uniformly enter the drying chamber 1. Which effectively prevents stacking of silicon particles, etc.
Claims (6)
1. A conveyer belt drying device for silicon crushed aggregates, its characterized in that: the device comprises a drying chamber (1), a conveyor belt (2) and high-purity nitrogen air shafts (3), wherein the conveyor belt (2) and the high-purity nitrogen air shafts (3) are arranged in the drying chamber (1), and the high-purity nitrogen air shafts (3) are at least two and distributed on two sides of the conveyor belt (2);
the upper part of the drying chamber (1) is provided with a drying chamber feed inlet (4), a discharging hopper I (5) is arranged at the drying chamber feed inlet (4), the discharging hopper I (5) is positioned at the front side of a station of a feed section of the conveyor belt (2), and an air outlet (6) on the high-purity nitrogen air shaft (3) is positioned at one side between the discharging hopper I (5) and the feed section of the conveyor belt (2); a discharging hopper II (7) is arranged at the discharging section of the conveyor belt (2), a silicon particle receiver (8) is arranged at the rear side of a station of the discharging hopper II (7), the silicon particle receiver (8) is arranged at the lower part of the drying chamber (1), and an air outlet (6) on the opposite-side high-purity nitrogen air shaft (3) is positioned at one side between the discharging hopper II (7) and the silicon particle receiver (8);
a channel for continuously conveying and drying the silicon crushed aggregates in the drying chamber (1) is formed among the drying chamber feed inlet (4), the discharging hopper I (5), the conveyor belt (2) and the discharging hopper II (7).
2. Conveyor-type drying device for silicon scraps according to claim 1, characterized in that: temperature and humidity sensors are arranged in the discharging hopper I (5) and the discharging hopper II (7), an air valve is arranged at the air outlet (6), and the air valve is interlocked with the temperature and humidity sensors through electric signals.
3. Conveyor-type drying device for silicon particles according to claim 1 or 2, characterized in that: the number of the conveyor belts (2) is three, and the conveyor belts (2) are longitudinally arranged in the drying chamber (1).
4. A conveyor-type drying apparatus for silicon particles according to claim 3, characterized in that: the distance between the adjacent conveyor belts (2) is 45-60cm, the length of the conveyor belts (2) is 2-3m, and the width of the conveyor belts (2) is 45-60cm.
5. Conveyor-type drying device for silicon scraps according to claim 1, characterized in that: the conveyor belt (2) is a high-temperature-resistant and wear-resistant conveyor belt.
6. Conveyor-type drying device for silicon scraps according to claim 1, characterized in that: the utility model discloses a conveyer belt (2) drying device's station front side is provided with tunnel type conveying mechanism (9), and tunnel type conveying mechanism's (9) station front side is provided with cloth machine (10), and the discharge gate of cloth machine (10) is located one side of tunnel type conveyer belt feed section, and conveyer belt discharge section and drying chamber feed inlet (4) intercommunication, hopper I (5) set up in conveyer belt discharge section department promptly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222960281.8U CN218915793U (en) | 2022-11-08 | 2022-11-08 | Conveyor belt type drying device for silicon crushed aggregates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222960281.8U CN218915793U (en) | 2022-11-08 | 2022-11-08 | Conveyor belt type drying device for silicon crushed aggregates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218915793U true CN218915793U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222960281.8U Active CN218915793U (en) | 2022-11-08 | 2022-11-08 | Conveyor belt type drying device for silicon crushed aggregates |
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|---|---|
| CN (1) | CN218915793U (en) |
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2022
- 2022-11-08 CN CN202222960281.8U patent/CN218915793U/en active Active
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