Sorting device for quartz sand production

Abstract

The invention relates to the technical field of quartz sand production, in particular to a quartz sand production sorting device which comprises a base, a sorting screen drum structure is arranged above the base, and the sorting screen drum structure comprises a first sorting screen drum, a second sorting screen drum and a third sorting screen drum which are sequentially arranged from inside to outside; a first material conveying spiral rib plate, a third material conveying spiral rib plate and a fifth material conveying spiral rib plate are arranged in the first sorting and screening barrel, the second sorting and screening barrel and the third sorting and screening barrel correspondingly. According to the invention, the first sorting and screening cylinder, the second sorting and screening cylinder and the third sorting and screening cylinder which are sequentially arranged from inside to outside are adopted to form a nested sorting and screening cylinder structure, and are matched with the first screening net, the second screening net and the third screening net which are matched with each cylinder wall in aperture, so that quartz sand can be subjected to three-stage continuous sorting; and the first-stage, second-stage and third-stage materials and residual materials can be synchronously obtained through one-time operation, repeated operation is not needed, and the separation efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of quartz sand production technology, and specifically to a sorting device for quartz sand production. Background Technology

[0002] Quartz sand is quartz particles produced by crushing and processing quartz stone. Quartz stone, also known as silica, is a hard, wear-resistant, and chemically stable silicate mineral that exists in nature as quartz sandstone, quartzite, and vein quartz. The preparation of quartz sand requires crushing it into particles, then sorting the particles according to different particle sizes, each with different uses.

[0003] A crushing and sorting device for quartz sand, with announcement number CN203695113U, includes a crushing box and a sorting box. The left end face of the crushing box is provided with a left airflow channel, which passes through the left side wall of the crushing box. A crushing roller is provided between the outlets of the left airflow channel inside the box. The upper end face and the lower end face of the crushing box are respectively provided with upper and lower airflow channels.

[0004] The sorting device for quartz sand with announcement number CN221453327U includes a sorting box, a first screen plate and a second screen plate disposed inside the sorting box, a feed hopper connected to the top of the sorting box, and a discharge chamber located at the end of the sorting box away from the feed hopper; a vibrating motor is installed at the bottom of the sorting box, and four sets of spring supports are connected to the side wall of the sorting box; a first positioning groove for installing the first screen plate is provided inside the sorting box.

[0005] Currently, most quartz sand sorting equipment on the market suffers from the design flaw of a single screening structure, often only capable of single-pass sorting. If multiple particle size grades of quartz sand are required, repeated operations are necessary, which is not only cumbersome and time-consuming but also leads to low production efficiency. Some multi-stage sorting equipment also suffers from unreasonable structural layout, requiring multiple sorting devices to connect and transfer materials between sorting units, resulting in a large overall space occupation. Summary of the Invention

[0006] (a) Technical problem to be solved: The purpose of this invention is to provide a sorting device for quartz sand production in order to solve the above-mentioned problem.

[0007] (II) Technical Solution: To achieve the above objectives, the present invention provides the following technical solution: This invention provides a sorting device for quartz sand production, comprising a base, with a sorting screen structure mounted above the base. The sorting screen structure includes a first sorting screen, a second sorting screen, and a third sorting screen arranged sequentially from the inside to the outside. A first, a third, and a fifth material transfer spiral rib are respectively installed inside each of the first, second, and third sorting screens. A first collecting drum is respectively installed on the outer side of each of the first, second, and third sorting screens. The second and third collection drums are configured such that when material enters the sorting and screening drum from one end of the first sorting and screening drum, primary material is discharged from the other end of the first sorting and screening drum, and the remaining material is collected from the first collection drum and enters one end of the second sorting and screening drum for sorting and screening. Secondary material is discharged from the other end of the second sorting and screening drum, and the remaining material is collected from the second collection drum and enters one end of the third sorting and screening drum for sorting and screening. Tertiary material is discharged from the other end of the third sorting and screening drum, and the remaining material is collected and discharged from the third collection drum. The base is equipped with an angle adjustment assembly for independently adjusting the tilt angle of the first sorting sieve cylinder, the second sorting sieve cylinder, and the third sorting sieve cylinder; The base is equipped with a belt drive assembly for independently driving the rotation of the first sorting sieve cylinder, the second sorting sieve cylinder, and the third sorting sieve cylinder.

[0008] Furthermore, the first, second, and third sorting screens are respectively provided with a first screen, a second screen, and a third screen on their side walls.

[0009] Furthermore, the first sorting screen cylinder and the first aggregate rotating cylinder share a central axis and are driven to rotate synchronously by a belt drive assembly; the second sorting screen cylinder and the second aggregate rotating cylinder share a central axis and are driven to rotate synchronously by a belt drive assembly; and the third sorting screen cylinder and the third aggregate rotating cylinder share a central axis and are driven to rotate synchronously by a belt drive assembly.

[0010] Furthermore, one end of the first collecting drum is fixedly connected to the outer wall of the first sorting and screening drum in a closed manner, and a first material transfer gap is formed between the other end of the first collecting drum and the outer wall of the first sorting and screening drum. One end of the second collecting drum is fixedly connected to the outer wall of the second sorting and screening drum in a closed manner, and a second material transfer gap is formed between the other end of the second collecting drum and the outer wall of the second sorting and screening drum. One end of the third aggregate rotating drum is fixedly connected to the outer wall of the third sorting and screening drum in a closed manner, and a discharge gap is formed between the other end of the third aggregate rotating drum and the outer wall of the third sorting and screening drum.

[0011] Furthermore, a second material transfer spiral rib is provided between the first sorting and screening cylinder and the first collecting rotating cylinder, a fourth material transfer spiral rib is provided between the second sorting and screening cylinder and the second collecting rotating cylinder, and a sixth material transfer spiral rib is provided between the third sorting and screening cylinder and the third collecting rotating cylinder. The first, third, fifth, and sixth material transfer spiral ribs have the same rotation direction, and the second and fourth material transfer spiral ribs have the same rotation direction but opposite to that of the first material transfer spiral rib.

[0012] Furthermore, the tilt adjustment assembly includes a bracket that supports each sorting and screening cylinder. One bottom side of each bracket is hinged to the base via a hinged support rod, and a hydraulic cylinder is provided between the other bottom side of each bracket and the base. The hydraulic cylinder is hinged to both the bracket and the base.

[0013] Furthermore, a feeding conveying assembly is provided at the material inlet end of the first sorting and screening cylinder. The feeding conveying assembly includes a conveyor, the conveyor belt of which has a V-shaped cross-section, and the frame of the conveyor is fixedly mounted on the support via a connecting seat.

[0014] Furthermore, one end of the conveyor extends into the interior of the first sorting and screening cylinder, and an inner guide ring is provided protruding near the conveyor inside the first sorting and screening cylinder, the cross-sectional shape of which is triangular.

[0015] Furthermore, the belt drive assembly includes a second pulley disposed on the outer side of the end of each sorting and screening cylinder, a first pulley is provided on one side of each second pulley, a synchronous belt is meshed between the corresponding first pulley and second pulley, and an input shaft is provided at the shaft end of the first pulley.

[0016] Furthermore, the material outlets of the first sorting screen, the second sorting screen, the third sorting screen, and the third collecting drum are located at the same end, and each outlet is provided with a guide hopper. The inner sidewalls of the second sorting screen facing the first material transfer gap and the third sorting screen facing the second material transfer gap are respectively provided with inner turning baffles, and each inner turning baffle is provided with a sealing ring.

[0017] (III) Beneficial Effects: Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention employs a nested sorting screen structure consisting of a first sorting screen, a second sorting screen, and a third sorting screen arranged sequentially from the inside out. Combined with the first, second, and third screens with appropriately sized apertures on each screen wall, it enables three-stage continuous sorting of quartz sand. A single operation simultaneously yields primary, secondary, and tertiary materials, as well as residual material, eliminating the need for repetitive operations and significantly improving sorting efficiency. Each sorting screen rotates synchronously along a central axis with its corresponding first, second, and third collecting drums. Combined with directional conveying structures such as the first and second conveying spiral ribs inside and between the drums, it ensures uniform distribution and smooth flow of material during the sorting process, greatly saving equipment space.

[0018] 2. Based on the integrated sorting of each stage, the tilt adjustment component configured on the base, through the cooperation of the bracket, hydraulic cylinder and hinged support rod, can independently adjust the tilt angle of the three sorting screens. Combined with the belt drive component, which realizes the independent drive rotation function of each sorting screen through the first pulley, the second pulley, the synchronous belt and the input shaft, it can flexibly adjust the tilt angle and speed of each screen according to different particle size requirements, material moisture and flowability characteristics, etc., to adapt to diverse sorting scenarios.

[0019] 3. The closed and fixed connection design of the first, second, and third collection drums with the corresponding sorting and screening drums, combined with the reasonable layout of the first and second material transfer gaps and the discharge gap, realizes the directional transfer of materials between each sorting level. At the same time, the six sets of material transfer spiral ribs, including the first and second material transfer spiral ribs, which rotate in the same direction, ensure that the materials are pushed in an orderly manner inside and between the drums. The internal turning baffles and sealing rings inside the second and third sorting and screening drums effectively prevent leakage during the material transfer process, ensuring the continuity and stability of the sorting process.

[0020] 4. The feeding conveyor assembly at the material inlet of the first sorting and screening cylinder has a V-shaped cross-section to prevent material spillage during transport. Combined with the triangular inner guide ring inside the cylinder, it guides the material to be evenly dispersed to the first conveying spiral rib, laying a good foundation for subsequent sorting. Simultaneously, the material outlets of the first, second, third, and third collecting drums are concentrated at the same end, and each outlet is equipped with a guide hopper, facilitating the centralized collection of sorted materials of different grades, simplifying subsequent processing steps, and improving the overall operational efficiency of quartz sand production. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is the present invention. Figure 1 A schematic diagram of the right-side view structure; Figure 3 This is the present invention. Figure 1 A schematic diagram of the three-dimensional structure in the first direction; Figure 4 This is the present invention. Figure 1 A schematic diagram of the AA cross-sectional structure; Figure 5 This is the present invention. Figure 4 A magnified schematic diagram of the structure at point C; Figure 6 This is the present invention. Figure 2 Schematic diagram of BB structure; Figure 7 This is the present invention. Figure 6 A magnified schematic diagram of the structure at point D; Figure 8 This is the present invention. Figure 1 A schematic diagram of the second-direction three-dimensional structure; Figure 9 This is a schematic diagram of the quartz sand sorting process of the present invention.

[0023] The reference numerals in the attached drawings are explained as follows: 1. Base; 101. Support leg; 2. Sorting screen cylinder structure; 201. First sorting screen cylinder; 202. Second sorting screen cylinder; 203. Third sorting screen cylinder; 204. First collecting drum; 205. Second collecting drum; 206. Third collecting drum; 207. First conveying spiral rib; 208. Second conveying spiral rib; 209. Third conveying spiral rib; 210. Fourth conveying spiral rib; 211. Fifth conveying spiral rib; 212. ... 6. Spiral rib for material transfer; 213. First screen; 214. Second screen; 215. Third screen; 216. Inner steering baffle; 217. Sealing ring; 3. Inclination adjustment assembly; 301. Bracket; 302. Hydraulic cylinder; 303. Hinge support rod; 4. Feed transmission assembly; 401. Transmitter; 402. Connecting seat; 5. Belt drive assembly; 501. First pulley; 502. Second pulley; 503. Synchronous belt; 504. Input shaft; 6. Guide hopper; 7. Inner guide ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] See Figures 1-9 As shown, this invention provides a sorting device for quartz sand production, including a base 1. The lower side of the base 1 is provided with several liftable support legs 101. A sorting screen structure 2 is mounted above the base 1. This sorting screen structure 2 adopts a nested design from the inside out, specifically including a first sorting screen 201, a second sorting screen 202, and a third sorting screen 203. To achieve orderly material transfer within each screen, the first sorting screen 201, the second sorting screen 202, and the third sorting screen 203... The first conveying spiral rib 207, the third conveying spiral rib 209, and the fifth conveying spiral rib 211 are respectively provided inside the screening cylinder 202 and the third screening cylinder 203. At the same time, in order to collect and transfer the material screened by each screening cylinder, the outer side of each first screening cylinder 201, second screening cylinder 202, and third screening cylinder 203 is correspondingly equipped with a first collecting rotating cylinder 204, a second collecting rotating cylinder 205, and a third collecting rotating cylinder 206.

[0026] In actual sorting operations, materials enter from one end of the first sorting screen cylinder 201. After preliminary screening, the first-grade materials that meet the requirements are directly discharged from the other end of the first sorting screen cylinder 201, while the remaining unscreened materials are collected by the first collecting drum 204 and conveyed to one end of the second sorting screen cylinder 202 for secondary sorting. The second-grade materials screened by the second sorting screen cylinder 202 are discharged from its other end, and the remaining materials are transferred to one end of the third sorting screen cylinder 203 via the second collecting drum 205 for a third sorting. Finally, the tertiary materials are discharged from the other end of the third sorting screen cylinder 203, and the remaining materials after three screenings are discharged from the third collecting drum 206.

[0027] To achieve the classification and screening of materials with different particle sizes, see the attached instruction manual. Figure 4 and Figure 5 As shown, the first sorting screen cylinder 201, the second sorting screen cylinder 202, and the third sorting screen cylinder 203 are respectively provided with a first screen 213, a second screen 214, and a third screen 215 on their side walls. The screen openings of the first screen 213, the second screen 214, and the third screen 215 decrease in size in sequence, and the particle size of the material is controlled by screens with different opening diameters.

[0028] To ensure the synchronization and stability of the screening and collection processes, see the attached instruction manual. Figure 1 , Figure 2 and Figure 6 As shown, the first sorting screen cylinder 201 and the first collecting drum 204 are arranged on the same central axis and are driven by the belt drive assembly 5 to rotate synchronously. Similarly, the second sorting screen cylinder 202 and the second collecting drum 205 are on the same central axis, and the third sorting screen cylinder 203 and the third collecting drum 206 are also on the same central axis. Both are driven by the belt drive assembly 5 to rotate synchronously, ensuring synchronous transmission and collection of materials during the screening process and avoiding material accumulation.

[0029] To ensure smooth material transfer between different levels, see the attached instruction manual. Figure 2 , Figure 6 and Figure 9 As shown, one end of the first collecting drum 204 is fixedly connected to the outer wall of the first sorting and screening drum 201 in a closed manner to prevent material from spilling during the transfer process. A first material transfer gap is formed between the other end of the first collecting drum 204 and the outer wall of the first sorting and screening drum 201, allowing the remaining material to enter the second sorting and screening drum 202. One end of the second collecting drum 205 is fixedly connected to the outer wall of the second sorting and screening drum 202 in a closed manner, and a second material transfer gap is formed between the other end and the outer wall of the second sorting and screening drum 202, which is used to transfer the remaining material after screening in the second sorting and screening drum 202 to the third sorting and screening drum 203. One end of the third collecting drum 206 is fixedly connected to the outer wall of the third sorting and screening drum 203 in a closed manner, and a discharge gap is formed between the other end and the outer wall of the third sorting and screening drum 203, so as to discharge the final remaining material.

[0030] To further optimize material transfer efficiency and ensure orderly material transfer between chambers, see the attached instruction manual. Figure 4 , Figure 5 and Figure 6As shown, a second material transfer spiral rib 208 is provided between the first sorting screen cylinder 201 and the first collecting rotating cylinder 204; a fourth material transfer spiral rib 210 is provided between the second sorting screen cylinder 202 and the second collecting rotating cylinder 205; and a sixth material transfer spiral rib 212 is provided between the third sorting screen cylinder 203 and the third collecting rotating cylinder 206. The first material transfer spiral rib 207, the third material transfer spiral rib 209, the fifth material transfer spiral rib 211, and the sixth material transfer spiral rib 212 rotate in the same direction, ensuring that the material is transferred in the same direction inside the screen cylinder and between the screen cylinder and the collecting rotating cylinder. The second material transfer spiral rib 208 and the fourth material transfer spiral rib 210 rotate in the same direction but opposite to the direction of rotation of the first material transfer spiral rib 207, thereby achieving the directional pushing of the remaining material into the material transfer gap. For example, the first material conveying spiral rib 207, the third material conveying spiral rib 209, the fifth material conveying spiral rib 211 and the sixth material conveying spiral rib 212 rotate clockwise, while the second material conveying spiral rib 208 and the fourth material conveying spiral rib 210 rotate counterclockwise.

[0031] To facilitate centralized collection of the graded and screened materials, and to ensure the sealing of the materials during the transfer process, please refer to the attached instruction manual. Figure 6 and Figure 7 As shown, the material outlets of the first sorting screen cylinder 201, the second sorting screen cylinder 202, the third sorting screen cylinder 203, and the third collecting drum 206 are all located at the same end, and each outlet is provided with a guide hopper 6 to quickly collect materials of different grades. In addition, the inner sidewalls of the second sorting screen cylinder 202 facing the first material transfer gap and the third sorting screen cylinder 203 facing the second material transfer gap are respectively provided with inner turning baffles 216, and the inner turning baffles 216 are provided with sealing rings 217, which can guide the material smoothly into the next stage screen cylinder and effectively prevent the material from leaking during the transfer process.

[0032] To adapt to the sorting requirements of different materials and achieve flexible adjustment of the screening angle, please refer to the instruction manual. Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the base 1 is equipped with an inclination adjustment assembly 3 for independently adjusting the inclination angle of the first sorting screen cylinder 201, the second sorting screen cylinder 202, and the third sorting screen cylinder 203. The inclination adjustment assembly 3 includes a bracket 301 for supporting each sorting screen cylinder. One side of the bottom of each bracket 301 is hinged to the base 1 via a hinged support rod 303, and the other side of the bottom is provided with a hydraulic cylinder 302 between it and the base 1. The hydraulic cylinder 302 is hinged to both the bracket 301 and the base 1. By controlling the extension and retraction of the hydraulic cylinder 302, the inclination angle of each sorting screen cylinder can be adjusted independently, thereby adjusting the material movement speed and screening effect inside the cylinder.

[0033] To achieve stable material conveying to the first sorting and screening cylinder 201, see the attached instruction manual. Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, a feeding conveying assembly 4 is provided at the material inlet end of the first sorting and screening cylinder 201. The feeding conveying assembly 4 includes a conveyor 401. The conveyor belt of the conveyor 401 has a V-shaped cross-section, which can effectively prevent the material from spilling during the conveying process. The frame of the conveyor 401 is fixedly mounted on the support 301 through a connecting seat 402 to ensure the relative position of the conveyor and the first sorting and screening cylinder 201 is stable. At the same time, one end of the conveyor 401 extends into the interior of the first sorting and screening cylinder 201, and an inner guide ring 7 is protruding at the position near the conveyor 401 inside the first sorting and screening cylinder 201. The cross-sectional shape of the inner guide ring 7 is triangular, which can guide the material conveyed by the conveyor 401 to be evenly dispersed into the interior of the first sorting and screening cylinder 201, avoiding material accumulation and affecting the screening efficiency.

[0034] To provide power support for the rotation of each sorting and screening cylinder and to ensure that each screening cylinder can operate independently, the base 1 is provided with a belt drive assembly 5 for independently driving the rotation of the first sorting and screening cylinder 201, the second sorting and screening cylinder 202, and the third sorting and screening cylinder 203 respectively. The belt drive assembly 5 includes a second pulley 502 disposed on the outer side of the end of each sorting and screening cylinder. A first pulley 501 is provided on one side of each second pulley 502. A synchronous belt 503 is meshed between the corresponding first pulley 501 and the second pulley 502. An input shaft 504 is provided at the shaft end of the first pulley 501. By connecting the power source through the input shaft 504, the first pulley 501 can be driven to rotate, and then transmitted to the second pulley 502 through the synchronous belt 503, ultimately driving the corresponding sorting and screening cylinder to rotate, so as to realize independent control of the rotation speed of each screening cylinder.

[0035] Working principle of the invention: First, the quartz sand material to be sorted is conveyed to the inside of the first sorting and screening cylinder 201 through the V-shaped conveyor 401 in the feeding and conveying assembly 4. The triangular inner guide ring 7 inside the first sorting and screening cylinder 201, near the conveyor 401, guides the material to enter the first conveying spiral rib 207 inside the cylinder evenly. Subsequently, the belt drive assembly 5 corresponding to the first sorting and screening cylinder 201 drives the first pulley 501 to rotate through the input shaft 504, and transmits the rotation to the second pulley 502 through the synchronous belt 503, thereby driving the first sorting and screening cylinder 201 to rotate synchronously with the first collecting drum 204 with the same central axis. Under the rotation of the first sorting and screening cylinder 201, the material is sorted and screened by the first conveying spiral rib 207 in the first sorting and screening process. The material is transferred within the first sorting and screening cylinder 201. The first conveying spiral rib 207 within the first sorting and screening cylinder 201 pushes the material forward, while primary material smaller than the aperture of the first screen mesh 213 is discharged through the mesh and collected by the guide hopper 6. The remaining material enters the chamber between the first sorting and screening cylinder 201 and the first collecting rotating cylinder 204 during rotation, and is pushed to the first transfer gap by the second conveying spiral rib 208, whose rotation direction is opposite to that of the first conveying spiral rib 207. Then, this remaining material enters the second sorting and screening cylinder 202 through the first transfer gap. The second sorting and screening cylinder 202 and the second collecting rotating cylinder 205 rotate synchronously under the drive of their corresponding belt drive components 5. The third conveying spiral rib 207 within the second sorting and screening cylinder 202... 9. The material is moved forward. After being screened by the second screen 214, the secondary material is discharged from the guide hopper 6. The unscreened material enters the chamber between the two and is pushed to the second transfer gap by the fourth conveying spiral rib 210. The inner turning baffle 216 and sealing ring 217 of the second sorting screen cylinder 202 facing the first transfer gap ensure smooth material turning and prevent leakage. Then, the material enters the third sorting screen cylinder 203 through the second transfer gap. The third sorting screen cylinder 203 and the third collection drum 206 rotate synchronously. The fifth conveying spiral rib 211 pushes the material forward. After being screened by the third screen 215, the tertiary material is discharged from the guide hopper 6. Finally, the remaining material enters the third sorting screen cylinder 203 and the third collection drum 206. The chamber between 6 is pushed to the discharge gap by the sixth material conveying spiral rib 212, which rotates in the same direction as the first material conveying spiral rib 207, and discharged through the corresponding guide hopper 6; throughout the sorting process, the tilt angle adjustment component 3 on the base 1 can independently adjust the tilt angle of the first sorting screen cylinder 201, the second sorting screen cylinder 202, and the third sorting screen cylinder 203 by controlling the extension and retraction of the hydraulic cylinder 302 at the bottom of each support 301, combined with the supporting effect of the hinged support rod 303, so as to adapt to different sorting requirements and sorting speeds at each level. Moreover, the material discharge ends of the first sorting screen cylinder 201, the second sorting screen cylinder 202, the third sorting screen cylinder 203, and the third collecting drum 206 are located at the same end, which facilitates the centralized collection of materials at each level after sorting.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A sorting device for quartz sand production, characterized in that: Includes a base (1), above which is a sorting screen cylinder structure (2), the sorting screen cylinder structure (2) includes a first sorting screen cylinder (201), a second sorting screen cylinder (202) and a third sorting screen cylinder (203) arranged sequentially from the inside to the outside. The first sorting screen cylinder (201), the second sorting screen cylinder (202) and the third sorting screen cylinder (203) are respectively provided with a first material conveying spiral rib (207), a third material conveying spiral rib (209) and a fifth material conveying spiral rib (211). The outer side of each of the first sorting screen cylinder (201), the second sorting screen cylinder (202) and the third sorting screen cylinder (203) is respectively provided with a first collecting drum (207). 4) When the material enters the sorting and screening from one end of the first sorting and screening drum (201), the first-level material is discharged from the other end of the first sorting and screening drum (201), and the remaining material is concentrated from the first collection drum (204) and enters one end of the second sorting and screening drum (202) for sorting and screening. The second-level material is discharged from the other end of the second sorting and screening drum (202), and the remaining material is concentrated from the second collection drum (205) and enters one end of the third sorting and screening drum (203) for sorting and screening. The third-level material is discharged from the other end of the third sorting and screening drum (203), and the remaining material is concentrated and discharged from the third collection drum (206). The base (1) is provided with an inclination adjustment assembly (3) for independently adjusting the inclination angle of the first sorting sieve cylinder (201), the second sorting sieve cylinder (202) and the third sorting sieve cylinder (203); The base (1) is provided with a belt drive assembly (5) for independently driving the rotation of the first sorting sieve cylinder (201), the second sorting sieve cylinder (202) and the third sorting sieve cylinder (203).

2. The sorting device for quartz sand production according to claim 1, characterized in that: The first sorting and screening cylinder (201), the second sorting and screening cylinder (202), and the third sorting and screening cylinder (203) are respectively provided with a first screening screen (213), a second screening screen (214), and a third screening screen (215).

3. A sorting device for quartz sand production according to claim 1 or 2, characterized in that: The first sorting screen cylinder (201) and the first aggregate rotating cylinder (204) share a central axis and are driven to rotate synchronously by a belt drive assembly (5). The second sorting screen cylinder (202) and the second aggregate rotating cylinder (205) share a central axis and are driven to rotate synchronously by a belt drive assembly (5). The third sorting screen cylinder (203) and the third aggregate rotating cylinder (206) share a central axis and are driven to rotate synchronously by a belt drive assembly (5).

4. The sorting device for quartz sand production according to claim 3, characterized in that: One end of the first collecting drum (204) is fixedly connected to the outer wall of the first sorting and screening drum (201) in a closed manner, and a first material transfer gap is formed between the other end of the first collecting drum (204) and the outer wall of the first sorting and screening drum (201). One end of the second collecting drum (205) is fixedly connected to the outer wall of the second sorting and screening drum (202) in a closed manner, and a second material transfer gap is formed between the other end of the second collecting drum (205) and the outer wall of the second sorting and screening drum (202); One end of the third aggregate rotating drum (206) is fixedly connected to the outer wall of the third sorting and screening drum (203) in a closed manner, and the other end of the third aggregate rotating drum (206) is connected to the outer wall of the third sorting and screening drum (203) with a discharge gap.

5. The sorting device for quartz sand production according to claim 4, characterized in that: A second material transfer spiral rib (208) is provided between the first sorting and screening cylinder (201) and the first collection rotating cylinder (204). A fourth material transfer spiral rib (210) is provided between the second sorting and screening cylinder (202) and the second collection rotating cylinder (205). A sixth material transfer spiral rib (212) is provided between the third sorting and screening cylinder (203) and the third collection rotating cylinder (206). The first material transfer spiral rib (207), the third material transfer spiral rib (209), the fifth material transfer spiral rib (211), and the sixth material transfer spiral rib (212) have the same rotation direction. The second material transfer spiral rib (208) and the fourth material transfer spiral rib (210) have the same rotation direction and are opposite to the rotation direction of the first material transfer spiral rib (207).

6. The sorting device for quartz sand production according to claim 1, characterized in that: The tilt adjustment assembly (3) includes a bracket (301) that supports each sorting and screening cylinder. One side of the bottom of each bracket (301) is hinged to the base (1) via a hinged support rod (303). A hydraulic cylinder (302) is provided between the other side of the bottom of each bracket (301) and the base (1). The hydraulic cylinder (302) is hinged to the bracket (301) and the base (1) respectively.

7. The sorting device for quartz sand production according to claim 6, characterized in that: The first sorting and screening cylinder (201) is provided with a feeding conveyor assembly (4) at the material inlet end. The feeding conveyor assembly (4) includes a conveyor (401). The conveyor belt of the conveyor (401) has a V-shaped cross-section. The frame of the conveyor (401) is fixedly mounted on the support (301) through a connecting seat (402).

8. The sorting device for quartz sand production according to claim 7, characterized in that: One end of the conveyor (401) extends into the interior of the first sorting and screening cylinder (201). An inner guide ring (7) is provided in the first sorting and screening cylinder (201) near the position of the conveyor (401). The cross-sectional shape of the inner guide ring (7) is triangular.

9. The sorting device for quartz sand production according to claim 3, characterized in that: The belt drive assembly (5) includes a second pulley (502) disposed on the outer side of the end of each sorting and screening cylinder. A first pulley (501) is provided on one side of each second pulley (502). A synchronous belt (503) meshes between the corresponding first pulley (501) and second pulley (502). An input shaft (504) is provided at the shaft end of the first pulley (501).

10. A sorting device for quartz sand production according to claim 3, characterized in that: The material outlets of the first sorting screen (201), the second sorting screen (202), the third sorting screen (203) and the third collection drum (206) are located at the same end and are respectively provided with guide hoppers (6) at the outlet. The inner sidewalls of the second sorting screen (202) facing the first material transfer gap and the third sorting screen (203) facing the second material transfer gap are respectively provided with inner turning baffles (216), and the inner turning baffles (216) are provided with sealing rings (217).

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