Screening device for high-purity quartz powder production

Abstract

The invention relates to the technical field of quartz powder processing, in particular to a high-purity quartz powder production screening device which comprises a shell, and a feeding port, a discharging port and an air inlet are formed in the shell; a grinder and a classifier are respectively arranged in the shell, the classifier is arranged at the top in the shell, an air guide part is arranged at the bottom of the shell, materials ground by the grinder enter the air guide part, and gas drives the materials to sequentially pass through the air guide part and the classifier through an air inlet and is discharged through a discharge port. Materials enter the grinder through the feeding port, the materials ground by the grinder enter the air guide part, air enters the shell through the air inlet and drives the materials to sequentially pass through the air guide part and the classifier and be discharged through the discharging port, and when the materials move to the classifier, the classifier screens the materials under the action of centrifugal force. Materials meeting the standard are discharged through the discharging port through the air separator, and materials not meeting the standard fall into the shell and fall on the grinder to be ground again.

Description

Technical Field

[0001] The present invention relates to the technical field of quartz powder processing, and particularly relates to a screening device for the production of high-purity quartz powder. Background Art

[0002] Quartz powder is a powder obtained by processing pure quartz through multiple processes, and has characteristics such as high hardness (Mohs hardness 7), high temperature resistance (melting point 1750 °C), stable chemical properties (insoluble in acid), and good insulation. According to different purities, particle sizes and processing technologies, its applications cover several fields such as construction, electronics, chemical industry, and medical treatment, and it is one of the important materials in modern industry.

[0003] Currently, the grinding and screening of quartz powder are usually completed by two independent devices respectively. The materials that do not pass through the screening need to be manually transferred to the grinding equipment for re-grinding. To improve efficiency, transfer devices have emerged on the market, and often use equipment such as air pumps to move the materials that do not pass through the screening to the grinding equipment.

[0004] However, this transfer device usually needs to be externally equipped with multiple transfer pipelines for material transfer. However, in the production space of quartz powder, there are many types of transportation pipelines, so the layout level of the production line is required to be relatively high. In addition, the setting of transfer pipelines also increases the maintenance requirements additionally. Summary of the Invention

[0005] The purpose of the present invention is to provide a screening device for the production of high-purity quartz powder to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A screening device for the production of high-purity quartz powder, including a housing, on which a feed inlet, a discharge outlet and an air inlet are respectively provided; inside the housing, a grinder and a separator are respectively provided. The separator is arranged at the top inside the housing, and a wind guiding part is arranged at the bottom of the housing. The materials ground by the grinder enter the wind guiding part, and the gas drives the materials through the wind guiding part and the separator in sequence through the air inlet, and is discharged through the discharge outlet.

[0008] Further, the grinder includes a first motor fixedly arranged inside the housing, a grinding disc is fixedly connected to the output end of the first motor, a circumferential plate is fixedly arranged inside the housing through a plurality of connecting blocks, and a grinding cavity is formed between the grinding disc and the circumferential plate.

[0009] Further, the grinding cavity is arranged to narrow from top to bottom.

[0010] Further, the air classifier includes a grading wheel rotatably disposed inside the housing. A sorting chamber is provided at the top of the housing, and the sorting chamber communicates with the discharge port. The top end of the grading wheel is rotatably connected to the sorting chamber, and a driver for driving the grading wheel is fixedly provided on the housing.

[0011] Further, the driver includes a rotating shaft rotatably connected to the top of the housing. One end of the rotating shaft extends into the housing and is fixedly connected to the grading wheel, and the other end is fixedly connected to a first pulley. A second motor is also fixedly provided on the housing, and a second pulley is fixedly provided on the output shaft of the second motor. The first pulley and the second pulley are connected by a conveyor belt.

[0012] Further, the air guiding part includes an annular material plate fixedly provided inside the housing. The material plate is used to receive the materials falling from the grinding chamber. The material plate and the grinding disc form a first channel, the circumferential plate and the inner wall of the housing form a second channel, and the top of the annular plate of the housing and the sorting chamber form a third channel. The first channel communicates with the air inlet.

[0013] Further, a windproof block is fixedly provided at the bottom of the grinding disc. The windproof block is fixedly arranged circumferentially at the outer edge of the bottom of the grinding disc and forms a first channel with the material plate.

[0014] In the above technical solution, the beneficial effects of a screening device for producing high-purity quartz powder provided by the present invention are as follows:

[0015] By providing a grinder and an air classifier, the material enters the grinder through the feed port. The material ground by the grinder enters the air guiding part. The gas enters the housing through the air inlet and drives the material to pass through the air guiding part and the separator in sequence and is discharged through the discharge port. When the material moves to the separator, the separator screens the material by centrifugal force. The material meeting the standard is discharged through the air classifier and the discharge port, and the material not meeting the standard falls to the inside of the housing and onto the grinder for re-grinding. The present invention can perform grinding and screening operations simultaneously, directly return the material that fails to pass the screening for grinding operations without setting external pipelines, and reduces the requirement for production space.

[0016] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in the present disclosure and is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall structure provided by the embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the separator provided by the embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the sectional structure of the housing provided by the embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the enlarged partial structure A provided by the embodiment of the present invention.

[0023] Explanation of reference numerals:

[0024] 1. Housing; 11. Feed inlet; 12. Discharge outlet; 13. Air inlet; 21. First motor; 22. Grinding disc; 23. Circumferential plate; 24. Grinding chamber; 3. Separator; 31. Classification wheel; 32. Separation chamber; 33. Rotating shaft; 34. First pulley; 35. Second pulley; 36. Second motor; 41. Material plate; 42. First channel; 43. Second channel; 44. Third channel; 45. Windproof block. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present disclosure with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0026] Please refer to Figures 1-4 , a screening device for the production of high-purity quartz powder, including a housing 1, on which a feed inlet 11, a discharge outlet 12, and an air inlet 13 are respectively provided; a grinder and a separator 3 are respectively arranged inside the housing 1, the separator 3 is arranged at the top inside the housing 1, a wind guiding part is arranged at the bottom of the housing 1, the material ground by the grinder enters the wind guiding part, and the gas drives the material through the wind guiding part and the separator 3 in sequence through the air inlet 13 and is discharged through the discharge outlet 12.

[0027] The air inlet 13 is communicated with an external high-pressure air source, the discharge port 12 is communicated with an external storage device, the feed port 11 is communicated with a feeding device, and a solenoid valve is provided.

[0028] Further, the grinder includes a first motor 21 fixedly arranged in the housing 1. A grinding disc 22 is fixedly connected to the output end of the first motor 21. An annular plate 23 is fixedly arranged inside the housing 1 through a plurality of connecting blocks. A grinding chamber 24 is formed between the grinding disc 22 and the annular plate 23. The grinding chamber 24 is arranged to narrow from top to bottom.

[0029] A guard plate is arranged outside the first motor 21. One end of the guard plate is fixedly connected to the inner wall of the housing 1, and the other end is rotatably connected to the grinding disc 22, thereby improving the stability of the grinding disc 22.

[0030] The first motor 21 drives the grinding disc 22 to rotate. The materials on the grinding disc 22 move towards the annular plate 23 under the action of centrifugal force and are ground in the grinding chamber 24 to obtain quartz powder.

[0031] Further, the air classifier includes a classification wheel 31 rotatably arranged in the housing 1. A sorting chamber 32 is arranged at the top of the housing 1. The sorting chamber 32 is communicated with the discharge port 12. The top end of the classification wheel 31 is rotatably connected to the sorting chamber 32. A driver for driving the classification wheel 31 is fixedly arranged on the housing 1.

[0032] The classification wheel 31 is the core for classifying powder particles. It separates the materials into thick and thin by the centrifugal force generated by high-speed rotation, which belongs to the prior art, and its operating principle and structure will not be elaborated here. A rotary seal (not shown in the figure) is arranged between the sorting chamber 32 and the classification wheel 31 to prevent coarse particles from mixing into the fine powder and affecting the screening effect. And it can maintain the air resistance stability, improve the classification efficiency and the equipment reliability.

[0033] When the materials move to the classification wheel 31 driven by the gas, the unqualified (i.e., incompletely ground) coarse particle materials, due to the greater centrifugal force, are thrown onto the annular plate 23 and naturally fall onto the grinding disc 22 for re-grinding. The qualified (i.e., completely ground) fine particles, due to the smaller centrifugal force, are suspended inside the classification wheel 31 and enter the sorting chamber 32 under the drive of the gas and are discharged through the discharge port 12.

[0034] Further, the driver includes a rotating shaft 33 rotatably connected to the top of the housing 1. One end of the rotating shaft 33 extends into the housing 1 and is fixedly connected to the classification wheel 31, and the other end is fixedly connected to a first belt pulley 34. A second motor 36 is also fixedly arranged on the housing 1. A second belt pulley 35 is fixedly arranged on the output shaft of the second motor 36. The first belt pulley 34 and the second belt pulley 35 are connected by a conveyor belt.

[0035] The second motor 36 drives the second pulley 35 to rotate, and the second pulley 35 drives the first pulley 34 to rotate through the conveyor belt, and the first pulley 34 drives the grading wheel 31 to rotate through the rotating shaft 33.

[0036] Furthermore, the air guide portion includes an annular material plate 41 fixedly arranged in the shell 1, and the material plate 41 is used to receive the material dropped from the grinding chamber 24. The material plate 41 and the grinding disc 22 form a first channel 42, the annular plate 23 and the inner wall of the shell 1 form a second channel 43, and the top of the annular plate of the shell 1 and the sorting chamber 32 form a third channel 44, and the first channel 42 is connected to the air inlet 13.

[0037] After entering the housing 1 , the gas passes through the first channel 42 , the second channel 43 , and the third channel 44 in sequence, thereby moving the material on the material plate 41 to the classifying wheel 31 .

[0038] Furthermore, a windproof block 45 is fixedly arranged at the bottom of the grinding disc 22, and the windproof block 45 is fixedly arranged at the outer edge of the bottom of the grinding disc 22 in an annular direction, and forms a first channel 42 with the material plate 41. The end of the windproof block 45 extends outward and extends into the second channel 43, thereby preventing the gas from directly entering the grinding chamber 24. In addition, the second channel 43 at the windproof block 45 is partially narrowed, the gas flow rate is accelerated, and the material is discharged from the grinding chamber 24 faster.

[0039] Working principle: the material enters the grinder through the feed port 11, the first motor 21 drives the grinding disc 22 to rotate, the material on the grinding disc 22 moves to the annular plate 23 under the action of centrifugal force, and is ground in the grinding chamber 24 to obtain quartz powder, which falls on the material plate 41, and the gas enters the shell 1 through the air inlet 13, and passes through the first channel 42, the second channel 43 and the third channel 44 in sequence, thereby moving the material on the material plate 41 to the grading wheel 31, and the material is screened at the grading wheel 31, and the material that meets the standard enters the sorting chamber 32 and is discharged from the discharge port 12; the material that does not meet the standard is thrown onto the annular plate 23 due to the large centrifugal force, and naturally falls onto the grinding disc 22 to be ground again.

[0040] When the material moves to the classifier wheel 31 driven by the gas, the coarse-grained materials that do not meet the standards (i.e., are not completely ground) are thrown onto the circumferential plate 23 due to the large centrifugal force and naturally fall onto the grinding disc 22 for re-grinding; the fine-grained materials that meet the standards (i.e., are completely ground) are less affected by the centrifugal force, suspended inside the classifier wheel 31, enter the sorting chamber 32 under the drive of the gas, and are discharged through the discharge port 12. The gas drives the material to pass through the air guiding part and the sorter 3 in sequence and is discharged through the discharge port 12. When the material moves to the sorter 3, the sorter 3 screens the material by the action of centrifugal force. The materials that meet the standards are discharged through the air separator and the discharge port 12, and the materials that do not meet the standards fall into the housing 1 and onto the grinder for re-grinding.

[0041] Only some exemplary embodiments of the present invention are described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A screening device for the production of high-purity quartz powder, comprising a housing (1), characterized in that: The shell (1) is provided with a feed port (11), a discharge port (12) and an air inlet (13); a grinder and a separator (3) are provided inside the shell (1); the separator (3) is arranged at the top of the shell (1); an air guide is provided at the bottom of the shell (1); the material ground by the grinder enters the air guide, and the gas drives the material through the air inlet (13) to pass through the air guide, the separator (3) and is discharged through the discharge port (12).

2. The screening device for producing high-purity quartz powder according to claim 1, wherein The grinder comprises a first motor (21) fixedly arranged in a housing (1); a grinding disc (22) is fixedly connected to the output end of the first motor (21); an annular plate (23) is fixedly arranged inside the housing (1) via a plurality of connecting blocks; a grinding chamber (24) is formed between the grinding disc (22) and the annular plate (23).

3. The screening device for producing high-purity quartz powder according to claim 2, wherein The grinding chamber (24) is narrowed from top to bottom.

4. A screening device for the production of high-purity quartz powder according to claim 2, characterized in that, The air classifier comprises a classifying wheel (31) rotatably arranged in a shell (1); a classifying chamber (32) is arranged at the top of the shell (1); the classifying chamber (32) is communicated with a discharge port (12); the top end of the classifying wheel (31) is rotatably connected to the classifying chamber (32); and a driver for driving the classifying wheel (31) is fixedly arranged on the shell (1).

5. The screening device for producing high-purity quartz powder according to claim 4, characterized in that, The driver comprises a rotating shaft (33) rotatably connected to the top of the shell (1); one end of the rotating shaft (33) extends into the shell (1) and is fixedly connected to the grading wheel (31); the other end is fixedly connected to a first pulley (34); a second motor (36) is also fixedly arranged on the shell (1); a second pulley (35) is fixedly arranged on the output shaft of the second motor (36); and the first pulley (34) and the second pulley (35) are connected by a transmission belt.

6. The screening device for producing high-purity quartz powder according to claim 4, characterized in that, The air guide portion comprises an annular material plate (41) fixedly arranged in the shell (1), the material plate (41) being used to receive materials dropped from the grinding chamber (24), the material plate (41) and the grinding disc (22) forming a first channel (42), the annular plate (23) and the inner wall of the shell (1) forming a second channel (43), the top of the annular plate of the shell (1) and the sorting chamber (32) forming a third channel (44), and the first channel (42) being connected to the air inlet (13).

7. The screening device for producing high-purity quartz powder according to claim 6, characterized in that, A windproof block (45) is fixedly arranged at the bottom of the grinding disc (22); the windproof block (45) is fixedly arranged in an annular direction at the outer edge of the bottom of the grinding disc (22) and forms a first channel (42) with the material plate (41).

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