CN-224208503-U - High-purity quartz sand screening device applied to photovoltaic power generation system

Abstract

The utility model relates to a high-purity quartz sand screening device applied to a photovoltaic power generation system, which comprises a feeding bin cover, a vibrating screen and a discharging bin which are sequentially arranged from top to bottom, wherein a feeding port is formed in the feeding bin cover, a feeding port I is formed in the top of the vibrating screen, a coarse material discharging port and a fine material discharging port are formed in the side wall of the vibrating screen, a feeding port II is formed in the top of the discharging bin, a discharging port is formed in the bottom of the discharging bin, the fine material discharging port of the vibrating screen is connected with the feeding port II of the discharging bin, a plurality of hot gas supply pipes are fixed on the inner wall of the bottom of the discharging bin and provided with a plurality of air holes, an exhaust unit comprises an upper exhaust pipe and a lower exhaust pipe, the vibrating screen of the screening device can realize the particle size classification of quartz sand, and the hot gas supply pipes in the discharging bin jet high-temperature gases such as argon, so that metal impurities such as Fe, al and hydroxyl-OH adsorbed on the surface are removed in the falling process of the quartz sand, the purity of quartz sand is remarkably improved, and the requirement of light Fu Jigao pure quartz sand is met.

Inventors

• CHEN YONG

Assignees

• 东海县和创硅材料有限公司

Dates

Publication Date

20260508

Application Date

20250429

Claims (6)

1. 1. The high-purity quartz sand screening device applied to the photovoltaic power generation system is characterized by comprising a feeding bin cover, a vibrating screen and a discharging bin which are sequentially arranged from top to bottom; The top of the vibrating screen is provided with a feed inlet I, the feed bin cover is covered on the outer edge of the feed inlet of the vibrating screen, and the side wall of the vibrating screen is provided with a coarse material discharge port and a fine material discharge port; the hot gas supply pipes are fixed on the inner wall of the bottom of the discharging bin, a plurality of air holes are formed in the hot gas supply pipes, a gas supply joint is fixedly arranged on the outer wall of the bottom of the discharging bin, and the gas outlet ends of the gas supply joints are connected with the hot gas supply pipes in the discharging bin; Still include exhaust unit, it includes blast pipe and lower blast pipe, and the air inlet end of upper blast pipe is fixed on the top surface of feeding bin cover and communicates with the pan feeding mouth I of shale shaker, and the air inlet end of lower blast pipe is fixed on the top outer wall of arranging the feed bin and is extended to in the discharge bin.
2. 2. The high-purity quartz sand screening device applied to a photovoltaic power generation system according to claim 1, wherein a plurality of inclined guide plates are fixedly arranged on the inner wall of the discharge bin from top to bottom and from left to right in a staggered manner, and the inclined guide plates are positioned between the hot gas supply pipe and the upper exhaust pipe.
3. 3. The high-purity quartz sand screening device applied to the photovoltaic power generation system according to claim 2, wherein through holes for quartz sand and hot gas to circulate are formed in two inclined guide plates close to the bottom wall of the discharge bin.
4. 4. The high-purity quartz sand screening device applied to the photovoltaic power generation system according to claim 2, wherein the inclined guide plate and the horizontal plane form an acute angle.
5. 5. The high-purity quartz sand screening device applied to the photovoltaic power generation system according to claim 1 is characterized in that a fine material discharging hole of a vibrating screen is flexibly connected with a material inlet II of a discharging bin through a fluororubber corrugated pipe.
6. 6. The high-purity quartz sand screening device applied to the photovoltaic power generation system according to claim 1, wherein the bottom surface of the discharging bin is obliquely arranged, and an included angle between the discharging bin and the horizontal plane is an acute angle.

Description

High-purity quartz sand screening device applied to photovoltaic power generation system Technical Field The utility model relates to the technical field of quartz sand treatment, in particular to a high-purity quartz sand screening device applied to a photovoltaic power generation system. Background The photovoltaic power generation system has extremely high requirements on the purity, particle size distribution and surface cleanliness of high-purity quartz sand, and is mainly used for the fields of manufacturing photovoltaic crucibles, photovoltaic glass, silicon wafer cutting and the like; Conventional quartz sand screening devices typically employ vibratory screening or air flow sorting, but suffer from the following problems: (1) The impurity removal is incomplete, the conventional vibrating screen can only be graded according to the particle size, and metal impurities (such as Fe and Al) adsorbed on the surface of quartz sand and hydroxyl (-OH) pollution cannot be effectively removed, so that the stability of the photovoltaic melting process is affected. (2) The prior equipment needs to carry out high-temperature purification treatment after screening, has complicated flow, high energy consumption and easy secondary pollution introduction. Aiming at the problems, the prior equipment is technically modified to meet the use requirements. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the high-purity quartz sand screening device which can screen quartz sand and further remove impurities from the quartz sand in a thermal purification mode after screening and is applied to a photovoltaic power generation system. The technical problem to be solved by the utility model is realized by the following technical scheme that the high-purity quartz sand screening device applied to the photovoltaic power generation system comprises a feeding bin cover, a vibrating screen and a discharging bin which are sequentially arranged from top to bottom; The top of the vibrating screen is provided with a feed inlet I, the feed bin cover is covered on the outer edge of the feed inlet of the vibrating screen, and the side wall of the vibrating screen is provided with a coarse material discharge port and a fine material discharge port; the hot gas supply pipes are fixed on the inner wall of the bottom of the discharging bin, a plurality of air holes are formed in the hot gas supply pipes, a gas supply joint is fixedly arranged on the outer wall of the bottom of the discharging bin, and the gas outlet ends of the gas supply joints are connected with the hot gas supply pipes in the discharging bin; Still include exhaust unit, it includes blast pipe and lower blast pipe, and the air inlet end of upper blast pipe is fixed on the top surface of feeding bin cover and communicates with the pan feeding mouth I of shale shaker, and the air inlet end of lower blast pipe is fixed on the top outer wall of arranging the feed bin and is extended to in the discharge bin. The technical problem to be solved by the utility model can be further solved by the following technical scheme, the high-purity quartz sand screening device applied to the photovoltaic power generation system is characterized in that a plurality of inclined guide plates are fixedly arranged on the inner wall of the discharging bin from top to bottom and from left to right in a staggered manner, and the inclined guide plates are positioned between the hot gas supply pipe and the upper exhaust pipe. The technical problem to be solved by the utility model can be further solved by the following technical scheme, and the high-purity quartz sand screening device applied to the photovoltaic power generation system is characterized in that through holes for quartz sand and hot air to circulate are formed in two inclined guide plates close to the bottom wall of the discharge bin. The technical problem to be solved by the utility model can be further solved by the following technical scheme, the high-purity quartz sand screening device applied to the photovoltaic power generation system is characterized in that the included angle between the inclined guide plate and the horizontal plane is an acute angle. The technical problem to be solved by the utility model can be further solved by the following technical scheme, namely the high-purity quartz sand screening device applied to the photovoltaic power generation system is characterized in that a fine material discharging port of the vibrating screen is flexibly connected with a material inlet II of the discharging bin through a fluororubber corrugated pipe. The technical problem to be solved by the utility model can be further solved by the following technical scheme, the high-purity quartz sand screening device applied to the photovoltaic power generation system is characterized in that the bottom surface of the discharge bin is obliquely arranged, and the included angle between the discha