CN118751520A - A screening device and screening method for high-purity quartz sand production - Google Patents

Abstract

The present invention belongs to the technical field of quartz sand screening, and in particular to a screening device and screening method for high-purity quartz sand production, which includes: a screening box for screening and collecting quartz sand, a push-pull hole is provided on the bottom side of the screening box, a collection box is movably installed inside the push-pull hole, and the top of the screening box is open. The present invention can achieve the purpose of automatic feeding, the quartz sand impacts four baffles to drive the rotating column to rotate, so that the quartz sand falls into the screening box through the feeding pipe, and the multiple baffles rotate alternately and seal between the feeding pipe to prevent dust from spreading to the outside, and the quartz sand is screened through the screening hole, and the screening box is controlled to vibrate up and down to improve the screening effect of the screening box on quartz sand, and the dust can be sucked into the dust box through the dust suction bend pipe, and the dust enters the dust collection shell, and the dust can be blocked and collected through the metal mesh to prevent the dust from spreading and polluting the environment.

Description

A screening device and screening method for high-purity quartz sand production

Technical Field

The invention relates to the technical field of quartz sand screening, and in particular to a screening device and a screening method for producing high-purity quartz sand.

Background Art

High-purity quartz sand has excellent chemical stability, high insulation withstand voltage and extremely low volume expansion coefficient. It is an indispensable and important raw material for high-tech industries such as electronic core devices, optical communication materials, solar cells, etc. It is also the basic raw material for producing quartz crucibles, manufacturing single crystal silicon rod containers and chips. In the process of preparing high-purity quartz sand, a screening machine is needed to screen the quartz sand particles to remove impurities in the quartz sand particles and quartz sand particles of non-target particle size. When screening the quartz sand particles, a large amount of dust will be generated. There will be dust not only at the feed inlet and the screen, but also at the discharge pipe of the screening machine. When screening, the material is usually discharged while screening. When workers receive the quartz sand particles at the discharge pipe, they are prone to inhaling dust. Inhaling a large amount of dust will endanger the health of the workers. After searching, the public (announcement) number: CN118183324A involves a screening device and a screening method for high-purity quartz sand production used in the screening field, including a screening machine and a dust-free material receiving component. The above-mentioned dust-free material receiving component can transport the screened quartz sand particles to a receiving bucket in a sealed form without affecting the discharging speed. After the receiving bucket is full, it is pushed aside. After the dust in the receiving bucket settles down, it can be pulled away, so that no dust will appear at the discharge pipe, thereby preventing workers from inhaling dust when receiving the screened quartz sand particles, greatly improving safety, and the self-propelled replacement component can automatically push away the full receiving bucket, and automatically push the empty receiving bucket to the bottom of the drop pipe, thereby significantly improving the intelligence and automation of the dust-free receiving component, greatly reducing the workload of workers, reducing labor costs, and thus improving the practicability, functionality and intelligence of the screening device.

The existing quartz sand screening method is simple, the screening effect is poor, and it cannot automatically load the material for continuous screening.

Summary of the invention

The purpose of the present invention is to solve the shortcomings of the existing quartz sand screening method, which is simple, has poor screening effect and cannot automatically load materials for continuous screening, and to propose a screening device and a screening method for high-purity quartz sand production.

In order to achieve the above object, the present invention adopts the following technical solutions:

A screening device for producing high-purity quartz sand, comprising:

A screening box is used to screen and collect quartz sand. A push-pull hole is provided on the bottom side of the screening box. A collection box is movably installed inside the push-pull hole. The top of the screening box is open.

A sealing plate is installed on the top of the screening box, the feeding pipe is embedded in the sealing plate, the feeding pipe is a rectangular structure, and the feeding pipe is embedded in the top of the screening box;

A dust-proof blocking mechanism is used to prevent the dust of the quartz sand from spreading outside, and the dust-proof blocking mechanism is rotatably arranged in the feeding pipe;

A screening mechanism, installed at the bottom of the sealing plate, for screening quartz sand;

An outlet pipe is embedded in the right side of the screening box, the outlet pipe is inclined, and a conical pipe is arranged at the outer end of the outlet pipe;

A dust collection box is used to collect dust from the quartz sand. A dust collection elbow is connected between the dust collection box and the screening box. A dust collection shaft is rotatably mounted on the inner wall of the bottom of the dust collection box. A suction fan is mounted on the top of the dust collection shaft. A transmission rod is transmission-connected to the dust collection shaft. A power mechanism is installed on the outer side of the screening box. The power mechanism is transmission-connected to the transmission rod. A mounting hole is opened on the outer side of the dust collection box. A dust collection mechanism is movably mounted in the mounting hole.

A spiral feeder is provided with a feeding port on the outside of the spiral feeder for automatically feeding quartz sand. A transmission mechanism is provided between the spiral feeder and the dust suction shaft. The spiral feeder is connected with an inclined pipe, which cooperates with the feeding pipe.

Preferably, the dust-proof blocking mechanism includes a rotating column, which is rotatably installed in the feeding tube, and four baffles are installed on the outer side of the rotating column, the four baffles are evenly arranged, and the four baffles are matched with the inner wall of the feeding tube, and the sides of the four baffles are embedded with magnet bars, and the inner walls on both sides of the feeding tube are embedded with magnet blocks, and the magnet bars and the magnet blocks are attracted to each other; the quartz sand impacts the four baffles to drive the rotating column to rotate, so that the quartz sand falls into the screening box through the feeding tube, and the multiple baffles rotate alternately and seal with the feeding tube to prevent dust from spreading to the outside. In a stationary state, the cooperation between the magnet bars and the magnet blocks can ensure that the baffles are attracted to the side walls of the feeding tube to prevent dust from spreading to the outside.

Preferably, the screening mechanism comprises four elastic units, the four elastic units are all fixedly mounted on the bottom of the sealing plate, the bottom of the four elastic units is equipped with the same screening box, the screening box is inclined, the outlet of the screening box is located in the outlet pipe, a plurality of screening holes are provided on the bottom inner wall of the screening box, the four elastic units comprise four fixing rods, the four fixing rods are all fixedly mounted in the sealing plate, the bottom of the four sealing plates are equipped with elastic grooves, elastic plates are slidably installed in the four elastic grooves, the four elastic plates are fixedly mounted to the top edge of the screening box, a spring is fixedly mounted between the elastic plate and the elastic groove; quartz sand falls into the screening box, the quartz sand is screened through the screening holes, large particles of quartz sand are discharged through the outlet pipe and the conical tube, and small particles of quartz sand fall into the collecting box.

Preferably, a circular shaft is installed on the screening box for horizontal rotation, a cam is fixedly installed on the inner end of the circular shaft, the cam contacts the bottom of the screening box, a first transmission wheel is installed on the outer side of the circular shaft, a second transmission wheel is installed on the outer side of the transmission rod, and the outer sides of the first transmission wheel and the second transmission wheel are connected by the same conveyor belt; the rotation of the circular shaft drives the cam to rotate while the circular shaft rotates, and the cam squeezes the screening box to move upward, and four elastic plates slide in four elastic grooves. The spring provides elastic force for the elastic plates, so that the screening box moves downward, and the screening box can vibrate reciprocatingly up and down, which can improve the effect of the screening box on quartz sand screening.

Preferably, the power mechanism includes a servo motor, which is installed on the outside of the screening box. A driving gear is installed on the output shaft of the servo motor, and a driven gear is installed on the outer end of the round shaft, and the driving gear is meshed with the driven gear; the servo motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the round shaft to rotate.

Preferably, the dust collecting mechanism includes a dust collecting shell, which is movably connected to the mounting hole, a circular hole is opened at the bottom of the dust collecting shell, a metal mesh is placed in the dust collecting shell, a push-pull plate is installed on the outside of the dust collecting shell, and a handle is installed on the outside of the push-pull plate; when dust enters the dust collecting shell, the metal mesh can be used to block and collect the dust to prevent the dust from spreading and polluting the environment.

Preferably, the transmission mechanism includes a transmission shaft, which is rotatably mounted on the dust collection box, a first bevel gear is mounted on the left outer end of the transmission shaft, a power shaft is mounted on the bottom end of the spiral feeder, a second bevel gear is mounted on the bottom end of the power shaft, the first bevel gear is meshed with the second bevel gear, the right end of the transmission shaft is located in the dust collection box and is mounted with a first bevel gear, a second bevel gear is sleeved on the outer side of the dust collection shaft, a third bevel gear is mounted on the inner end of the transmission rod, the first bevel gear and the third bevel gear are both meshed with the second bevel gear; the second bevel gear drives the dust collection shaft to rotate, and the dust collection shaft drives the suction fan to rotate, and dust can be sucked into the dust collection box through the dust collection bend pipe, and the dust enters the dust collection shell, and the dust can be blocked and collected through the metal mesh.

A screening method for a screening device for producing high-purity quartz sand comprises the following steps:

S1: Turn on the power supply and control switch, and add quartz sand material through the feeding port on the spiral feeder;

S2: The servo motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the circular shaft to rotate, the circular shaft drives the first transmission wheel to rotate, the first transmission wheel drives the transmission rod to rotate through the conveyor belt and the second transmission wheel, the transmission rod drives the third bevel gear to rotate, the third bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the transmission shaft to rotate, the transmission shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the spiral feeder to work through the power shaft, and the quartz sand is introduced into the feeding pipe through the inclined pipe;

S3: Quartz sand impacts four baffles to drive the rotating column to rotate, so that the quartz sand falls into the screening box through the feeding pipe. Multiple baffles rotate alternately and seal with the feeding pipe to prevent dust from spreading to the outside. In the static state, the magnet bar and the magnet block can ensure the attraction between the baffle and the side wall of the feeding pipe to prevent dust from spreading to the outside.

S4: The quartz sand falls into the screening box, and the quartz sand is screened through the screening holes. Large particles of quartz sand are discharged through the outlet pipe and the conical pipe, and small particles of quartz sand fall into the collection box;

S5: The rotation of the circular shaft drives the cam to rotate at the same time, and the cam squeezes the screening box to move upward. The four elastic plates slide in the four elastic grooves. The spring provides elastic force to the elastic plates, so that the screening box moves downward, so that the screening box can vibrate up and down, which can improve the screening effect of the screening box on quartz sand;

S6: The second bevel gear drives the dust collection shaft to rotate, and the dust collection shaft drives the suction fan to rotate. The dust can be sucked into the dust collection box through the dust collection elbow, and the dust enters the dust collection shell. The metal mesh can block and collect the dust to prevent the dust from spreading and polluting the environment.

S7: After the processing is completed, stop the servo motor and pull the handle to drive the dust collection shell to facilitate cleaning of the interior. Pull the collection box to take out the collected fine quartz sand.

In the present invention, the screening device and screening method for producing high-purity quartz sand have the following beneficial effects:

The servo motor of this solution drives the first transmission wheel to rotate through the driving gear, the driven gear and the circular shaft. The first transmission wheel drives the transmission rod to rotate through the conveyor belt and the second transmission wheel. The transmission rod drives the first bevel gear to rotate through the third bevel gear and the second bevel gear. The first bevel gear drives the transmission shaft to rotate. The transmission shaft drives the first bevel gear to rotate. The first bevel gear drives the second bevel gear to rotate. The second bevel gear drives the spiral feeder to work through the power shaft. The quartz sand is introduced into the feeding pipe through the inclined pipe to achieve the purpose of automatic feeding.

In this solution, the quartz sand impacts the four baffles to drive the rotating column to rotate, so that the quartz sand falls into the screening box through the feeding pipe. The multiple baffles rotate alternately and seal the feeding pipe to prevent dust from spreading to the outside. In the static state, the magnet bar and the magnet block can ensure the attraction between the baffle and the side wall of the feeding pipe to prevent dust from spreading to the outside.

In this solution, the quartz sand falls into the screening box, and the quartz sand is screened through the screening holes. The large particles of quartz sand are discharged through the outlet pipe and the conical pipe, and the small particles of quartz sand fall into the collection box;

In this solution, the rotation of the circular shaft drives the cam to rotate at the same time, and the cam squeezes the screening box to move upward. The four elastic plates slide in the four elastic grooves. The spring provides elastic force for the elastic plates, so that the screening box moves downward, so that the screening box can vibrate up and down, which can improve the screening effect of the screening box on quartz sand.

The second bevel gear of this solution drives the dust collection shaft to rotate, and the dust collection shaft drives the suction fan to rotate. The dust can be sucked into the dust collection box through the dust collection elbow, and the dust enters the dust collection shell. The metal mesh can block and collect the dust to prevent the dust from spreading and polluting the environment.

The present invention can achieve the purpose of automatic feeding. Quartz sand impacts four baffles to drive the rotating column to rotate, so that the quartz sand falls into the screening box through the feeding pipe. Multiple baffles rotate alternately and seal the feeding pipe to prevent dust from diffusing to the outside. The quartz sand is screened through the screening holes. The screening box is controlled to vibrate up and down, which can improve the screening effect of the screening box on quartz sand. Dust can be sucked into the dust collection box through the dust suction bend pipe, and the dust enters the dust collection shell. The dust can be blocked and collected through the metal mesh to prevent dust from diffusing and polluting the environment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a screening device for producing high-purity quartz sand according to the present invention;

FIG2 is a schematic diagram of the structure of removing the collection box in FIG1 according to the present invention;

FIG3 is a schematic structural diagram of part A in FIG1 proposed by the present invention;

FIG4 is a schematic structural diagram of a sealing plate, a screening mechanism and its parts proposed by the present invention;

FIG5 is a bottom view schematic diagram of the structure of FIG4 proposed by the present invention;

FIG6 is a schematic structural diagram of a dust collection box, a spiral feeder and its parts proposed by the present invention;

FIG7 is a left-side structural schematic diagram of FIG6 proposed by the present invention;

FIG8 is a schematic structural diagram of the transmission mechanism and its parts proposed by the present invention;

FIG9 is a schematic structural diagram of a dust collection mechanism proposed by the present invention;

FIG10 is a schematic diagram of the top view of the structure of FIG9 proposed by the present invention;

FIG11 is a schematic diagram of the three-dimensional structure of the circular shaft, the first transmission wheel and the cam proposed by the present invention;

FIG12 is a schematic diagram of the three-dimensional structure of the dust blocking mechanism proposed by the present invention;

FIG13 is a schematic diagram of the three-dimensional structure of the outlet tube and the tapered tube proposed by the present invention;

FIG14 is a schematic structural diagram of the elastic unit proposed by the present invention;

FIG. 15 is a schematic diagram of the top view of the structure of the outlet tube and the tapered tube proposed in the present invention.

In the figure: 1. screening box; 11. push-pull hole; 12. collecting box; 13. sealing plate; 14. feeding pipe; 15. outlet pipe; 16. conical pipe; 2. dust-proof blocking mechanism; 21. rotating column; 22. baffle; 23. magnet bar; 3. screening mechanism; 31. screening box; 32. screening hole; 33. elastic unit; 331. fixing rod; 332. elastic groove; 333. spring; 334. elastic plate; 341. round shaft; 342. first transmission wheel; 343. cam; 344. conveyor belt; 4. dust suction box; 41. dust suction elbow; 42. dust suction Shaft; 43, suction fan; 44, third bevel gear; 45, transmission rod; 46, second transmission wheel; 47, mounting hole; 5, transmission mechanism; 51, transmission shaft; 52, first bevel gear; 53, second bevel gear; 54, first bevel gear; 55, second bevel gear; 56, power shaft; 6, spiral feeder; 61, inclined tube; 7, dust collection mechanism; 71, dust collection shell; 72, push-pull plate; 73, round hole; 74, metal mesh; 75, handle; 8, power mechanism; 81, servo motor; 82, drive gear; 83, driven gear.

DETAILED DESCRIPTION

The technical solution in this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of the embodiment, rather than all of the embodiments.

Embodiment 1

1 to 15, a screening device for producing high-purity quartz sand includes:

A screening box 1 is used for screening and collecting quartz sand. A push-pull hole 11 is provided on the bottom side of the screening box 1. A collection box 12 is movably installed inside the push-pull hole 11. The top of the screening box 1 is open.

The sealing plate 13 is installed on the top of the screening box 1, and the feeding pipe 14 is embedded in the sealing plate 13. The feeding pipe 14 is a rectangular structure and is embedded in the top of the screening box 1;

A dust-proof blocking mechanism 2 is used to prevent the dust of the quartz sand from spreading outside, and the dust-proof blocking mechanism 2 is rotatably arranged in the feeding pipe 14;

The screening mechanism 3 is installed at the bottom of the sealing plate 13 and is used to screen the quartz sand;

The outlet pipe 15 is embedded in the right side of the screening box 1. The outlet pipe 15 is inclined, and a conical pipe 16 is provided at the outer end of the outlet pipe 15.

A dust collecting box 4 is used to collect dust from the quartz sand. A dust collecting elbow 41 is connected between the dust collecting box 4 and the screening box 1. A dust collecting shaft 42 is rotatably mounted on the inner wall of the bottom of the dust collecting box 4. A suction fan 43 is mounted on the top of the dust collecting shaft 42. A transmission rod 45 is transmission-connected to the dust collecting shaft 42. A power mechanism 8 is transmission-connected to the transmission rod 45 on the outer side of the screening box 1. A mounting hole 47 is provided on the outer side of the dust collecting box 4. A dust collecting mechanism 7 is movably mounted in the mounting hole 47.

The spiral feeder 6 has a feeding port on its outside for automatically feeding quartz sand. A transmission mechanism 5 is provided between the spiral feeder 6 and the dust suction shaft 42 . The spiral feeder 6 is connected to an inclined pipe 61 , which cooperates with the feeding pipe 14 .

4 and 12 , in the present embodiment, the dust-proof blocking mechanism 2 comprises a rotating column 21, which is rotatably mounted in the feeding tube 14, and four baffles 22 are mounted on the outer side of the rotating column 21, and the four baffles 22 are evenly arranged, and the four baffles 22 cooperate with the inner wall of the feeding tube 14, and the sides of the four baffles 22 are embedded with magnet bars 23, and the inner walls on both sides of the feeding tube 14 are embedded with magnet blocks, and the magnet bars 23 attract the magnet blocks; the quartz sand impacts the four baffles 22 to drive the rotating column 21 to rotate, so that the quartz sand falls into the screening box 31 through the feeding tube 14, and the multiple baffles 22 rotate alternately and seal with the feeding tube 14, which can prevent dust from spreading to the outside. In the static state, the cooperation between the magnet bars 23 and the magnet blocks can ensure that the baffles 22 are attracted to the side walls of the feeding tube 14, which can prevent dust from spreading to the outside.

4 and 5, in this embodiment, the screening mechanism 3 includes four elastic units 33, the four elastic units 33 are fixedly mounted on the bottom of the sealing plate 13, the bottom of the four elastic units 33 is installed with the same screening box 31, the screening box 31 is inclined, the outlet of the screening box 31 is located in the outlet pipe 15, a plurality of screening holes 32 are provided on the bottom inner wall of the screening box 31, the four elastic units 33 include four fixing rods 331, the four fixing rods 331 are fixedly mounted In the sealing plate 13, elastic grooves 332 are provided at the bottom of the four sealing plates 13, elastic plates 334 are slidably installed in the four elastic grooves 332, and the four elastic plates 334 are fixedly installed on the top edge of the screening box 31, and a spring 333 is fixedly installed between the elastic plate 334 and the elastic grooves 332; quartz sand falls into the screening box 31, and the quartz sand is screened through the screening holes 32, large particles of quartz sand are discharged through the outlet pipe 15 and the conical tube 16, and small particles of quartz sand fall into the collecting box 12.

4 and 5, in the present embodiment, a round shaft 341 is installed on the screening box 1 for transverse rotation, a cam 343 is fixedly installed on the inner end of the round shaft 341, the cam 343 is in contact with the bottom of the screening box 31, a first transmission wheel 342 is installed on the outer side of the round shaft 341, a second transmission wheel 46 is installed on the outer side of the transmission rod 45, and the outer sides of the first transmission wheel 342 and the second transmission wheel 46 are connected to each other by a same conveyor belt 344; the round shaft 341 rotates while driving the cam 343 to rotate, the cam 343 squeezes the screening box 31 to move upward, the four elastic plates 334 slide in the four elastic grooves 332, and the spring 333 provides elastic force for the elastic plates 334, so that the screening box 31 moves downward, so that the screening box 31 can vibrate back and forth up and down, and the effect of the screening box 31 on quartz sand screening can be improved.

3 , in this embodiment, the power mechanism 8 includes a servo motor 81, which is installed on the outside of the screening box 1. A driving gear 82 is installed on the output shaft of the servo motor 81, and a driven gear 83 is installed on the outer end of the circular shaft 341. The driving gear 82 is meshed with the driven gear 83; the servo motor 81 drives the driving gear 82 to rotate, the driving gear 82 drives the driven gear 83 to rotate, and the driven gear 83 drives the circular shaft 341 to rotate.

9 and 10 , in this embodiment, the dust collecting mechanism 7 includes a dust collecting shell 71, which is movably connected to the mounting hole 47, a circular hole 73 is provided at the bottom of the dust collecting shell 71, a metal mesh 74 is placed in the dust collecting shell 71, a push-pull plate 72 is installed on the outside of the dust collecting shell 71, and a handle 75 is installed on the outside of the push-pull plate 72; when dust enters the dust collecting shell 71, the metal mesh 74 can be used to block and collect the dust to prevent the dust from spreading and polluting the environment.

8 , in this embodiment, the transmission mechanism 5 includes a transmission shaft 51, which is rotatably mounted on the dust box 4, a first bevel gear 54 is mounted on the left outer end of the transmission shaft 51, a power shaft 56 is mounted on the bottom end of the spiral feeder 6, a second bevel gear 55 is mounted on the bottom end of the power shaft 56, the first bevel gear 54 meshes with the second bevel gear 55, the right end of the transmission shaft 51 is located in the dust box 4 and is mounted with a first bevel gear 52, a second bevel gear 53 is sleeved on the outer side of the dust shaft 42, a third bevel gear 44 is mounted on the inner end of the transmission rod 45, the first bevel gear 52 and the third bevel gear 44 are both meshed with the second bevel gear 53; the second bevel gear 53 drives the dust shaft 42 to rotate, the dust shaft 42 drives the suction fan 43 to rotate, dust can be sucked into the dust box 4 through the dust suction elbow 41, the dust enters the dust collecting shell 71, and the dust can be blocked and collected through the metal mesh 74.

A screening method for a screening device for producing high-purity quartz sand comprises the following steps:

S1: Turn on the power supply and control switch, and add quartz sand material through the feeding port on the screw feeder 6;

S2: The servo motor 81 drives the driving gear 82 to rotate, the driving gear 82 drives the driven gear 83 to rotate, the driven gear 83 drives the circular shaft 341 to rotate, the circular shaft 341 drives the first transmission wheel 342 to rotate, the first transmission wheel 342 drives the transmission rod 45 to rotate through the conveyor belt 344 and the second transmission wheel 46, the transmission rod 45 drives the third bevel gear 44 to rotate, the third bevel gear 44 drives the second bevel gear 53 to rotate, the second bevel gear 53 drives the first bevel gear 52 to rotate, the first bevel gear 52 drives the transmission shaft 51 to rotate, the transmission shaft 51 drives the first bevel gear 54 to rotate, the first bevel gear 54 drives the second bevel gear 55 to rotate, the second bevel gear 55 drives the spiral feeder 6 to work through the power shaft 56, and the quartz sand is introduced into the feeding pipe 14 through the inclined pipe 61;

S3: Quartz sand impacts the four baffles 22 to drive the rotating column 21 to rotate, so that the quartz sand falls into the screening box 31 through the feeding pipe 14. The multiple baffles 22 rotate alternately and seal with the feeding pipe 14 to prevent dust from spreading to the outside. In the static state, the magnet bar 23 cooperates with the magnet block to ensure that the baffle 22 and the side wall of the feeding pipe 14 are attracted to each other, which can prevent dust from spreading to the outside.

S4: The quartz sand falls into the screening box 31, and the quartz sand is screened through the screening hole 32. The large particles of quartz sand are discharged through the outlet pipe 15 and the tapered pipe 16, and the small particles of quartz sand fall into the collecting box 12;

S5: The rotation of the circular shaft 341 drives the cam 343 to rotate, and the cam 343 squeezes the screening box 31 to move upward, and the four elastic plates 334 slide in the four elastic grooves 332. The spring 333 provides elastic force for the elastic plates 334, so that the screening box 31 moves downward, so that the screening box 31 can vibrate up and down, which can improve the screening effect of the screening box 31 on quartz sand;

S6: The second bevel gear 53 drives the dust collection shaft 42 to rotate, and the dust collection shaft 42 drives the suction fan 43 to rotate, and the dust can be sucked into the dust collection box 4 through the dust collection elbow 41, and the dust enters the dust collection shell 71, and the metal mesh 74 can block and collect the dust to prevent the dust from spreading and polluting the environment;

S7: After the processing is completed, the servo motor 81 is stopped, and the handle 75 is pulled to drive the dust collection shell 71, so that the inside can be easily cleaned, and the collection box 12 can be pulled to take out the collected fine quartz sand.

Embodiment 2

The rest of the embodiment 2 is the same as the embodiment 1, except that a magnet is provided on the inner side of the push-pull plate 72, and the magnet is attracted to the dust box 4, which can improve the stability of the push-pull plate 72. This application includes all the structural shapes, sizes and materials of the embodiment 1, and they can be selected and adjusted to meet the specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims (10)

1. A screening device for producing high-purity quartz sand, characterized in that it comprises: A screening box (1) is used for screening and collecting quartz sand, wherein a push-pull hole (11) is provided on the bottom side of the screening box (1), a collection box (12) is movably installed inside the push-pull hole (11), and the top of the screening box (1) is open; A sealing plate (13) is installed on the top of the screening box (1), and the feeding pipe (14) is embedded in the sealing plate (13). The feeding pipe (14) is a rectangular structure and is embedded in the top of the screening box (1); A dust-proof blocking mechanism (2) is used to prevent the dust of the quartz sand from spreading outside, and the dust-proof blocking mechanism (2) is rotatably arranged in the feeding pipe (14); A screening mechanism (3), installed at the bottom of the sealing plate (13), for screening quartz sand; A guide pipe (15) is embedded in the right side of the screening box (1), the guide pipe (15) is inclined, and a conical pipe (16) is provided at the outer end of the guide pipe (15); A dust collecting box (4) is used to collect dust from the quartz sand. A dust collecting bent pipe (41) is connected between the dust collecting box (4) and the screening box (1). A dust collecting shaft (42) is rotatably mounted on the inner wall of the bottom of the dust collecting box (4). A suction fan (43) is mounted on the top of the dust collecting shaft (42). A transmission rod (45) is drivingly connected to the dust collecting shaft (42). A power mechanism (8) is installed on the outer side of the screening box (1). The power mechanism (8) is drivingly connected to the transmission rod (45). A mounting hole (47) is opened on the outer side of the dust collecting box (4). A dust collecting mechanism (7) is movably mounted in the mounting hole (47). A screw feeder (6) is provided with a feeding port on the outside of the screw feeder (6) for automatically feeding quartz sand. A transmission mechanism (5) is provided between the screw feeder (6) and the dust suction shaft (42). The screw feeder (6) is connected to an inclined pipe (61), and the inclined pipe (61) cooperates with the feeding pipe (14). 2. A screening device for producing high-purity quartz sand according to claim 1, characterized in that the dust-proof blocking mechanism (2) comprises a rotating column (21), the rotating column (21) is rotatably installed in the feeding pipe (14), and four baffles (22) are installed on the outer side of the rotating column (21), the four baffles (22) are evenly arranged, the four baffles (22) are matched with the inner wall of the feeding pipe (14), the sides of the four baffles (22) are embedded with magnet bars (23), and the inner walls on both sides of the feeding pipe (14) are embedded with magnet blocks, and the magnet bars (23) are attracted to the magnet blocks. 3. A screening device for producing high-purity quartz sand according to claim 1, characterized in that the screening mechanism (3) comprises four elastic units (33), the four elastic units (33) are fixedly mounted on the bottom of the sealing plate (13), the bottom of the four elastic units (33) is equipped with a same screening box (31), the screening box (31) is inclined, the outlet of the screening box (31) is located in the outlet pipe (15), and a plurality of screening holes (32) are provided on the inner wall of the bottom of the screening box (31). 4. A screening device for producing high-purity quartz sand according to claim 3, characterized in that the four elastic units (33) include four fixed rods (331), the four fixed rods (331) are fixedly installed in the sealing plate (13), the bottoms of the four sealing plates (13) are provided with elastic grooves (332), elastic plates (334) are slidably installed in the four elastic grooves (332), the four elastic plates (334) are fixedly installed with the top edges of the screening box (31), and a spring (333) is fixedly installed between the elastic plates (334) and the elastic grooves (332). 5. A screening device for producing high-purity quartz sand according to claim 4, characterized in that a round shaft (341) is installed on the screening box (1) for transverse rotation, a cam (343) is fixedly installed on the inner end of the round shaft (341), the cam (343) is in contact with the bottom of the screening box (31), a first transmission wheel (342) is installed on the outer side of the round shaft (341), a second transmission wheel (46) is installed on the outer side of the transmission rod (45), and the outer sides of the first transmission wheel (342) and the second transmission wheel (46) are transmission-connected by the same conveyor belt (344). 6. A screening device for producing high-purity quartz sand according to claim 5, characterized in that the power mechanism (8) comprises a servo motor (81), the servo motor (81) is installed on the outside of the screening box (1), a driving gear (82) is installed on the output shaft of the servo motor (81), a driven gear (83) is installed on the outer end of the circular shaft (341), and the driving gear (82) is meshed with the driven gear (83). 7. A screening device for producing high-purity quartz sand according to claim 1, characterized in that the dust collecting mechanism (7) comprises a dust collecting shell (71), the dust collecting shell (71) is movably connected to the mounting hole (47), a circular hole (73) is provided at the bottom of the dust collecting shell (71), a metal mesh (74) is placed in the dust collecting shell (71), a push-pull plate (72) is installed on the outside of the dust collecting shell (71), and a handle (75) is installed on the outside of the push-pull plate (72). 8. A screening device for producing high-purity quartz sand according to claim 1, characterized in that the transmission mechanism (5) comprises a transmission shaft (51), the transmission shaft (51) is rotatably mounted on the dust collection box (4), a first bevel gear (54) is mounted on the left outer end of the transmission shaft (51), a power shaft (56) is mounted on the bottom end of the spiral feeder (6), a second bevel gear (55) is mounted on the bottom end of the power shaft (56), and the first bevel gear (54) is meshed with the second bevel gear (55). 9. A screening device for producing high-purity quartz sand according to claim 8, characterized in that the right end of the transmission shaft (51) is located in the dust collection box (4) and is equipped with a first bevel gear (52), the outer side of the dust collection shaft (42) is sleeved with a second bevel gear (53), and the inner end of the transmission rod (45) is equipped with a third bevel gear (44), and the first bevel gear (52) and the third bevel gear (44) are both meshed with the second bevel gear (53). 10. A screening method for a screening device for producing high-purity quartz sand, wherein the screening device for producing high-purity quartz sand is the screening device for producing high-purity quartz sand according to any one of claims 1 to 9, characterized in that the method comprises the following steps: S1: Turn on the power supply and control switch, and add quartz sand material through the feeding port on the screw feeder (6); S2: The servo motor (81) drives the driving gear (82) to rotate, the driving gear (82) drives the driven gear (83) to rotate, the driven gear (83) drives the circular shaft (341) to rotate, the circular shaft (341) drives the first transmission wheel (342) to rotate, the first transmission wheel (342) drives the transmission rod (45) to rotate through the transmission belt (344) and the second transmission wheel (46), the transmission rod (45) drives the third bevel gear (44) to rotate, and the third bevel gear (44 ) drives the second bevel gear (53) to rotate, the second bevel gear (53) drives the first bevel gear (52) to rotate, the first bevel gear (52) drives the transmission shaft (51) to rotate, the transmission shaft (51) drives the first bevel gear (54) to rotate, the first bevel gear (54) drives the second bevel gear (55) to rotate, the second bevel gear (55) drives the spiral feeder (6) to work through the power shaft (56), and the quartz sand is introduced into the feeding pipe (14) through the inclined pipe (61); S3: Quartz sand impacts the four baffles (22) to drive the rotating column (21) to rotate, so that the quartz sand falls into the screening box (31) through the feeding pipe (14), and the multiple baffles (22) rotate alternately to seal with the feeding pipe (14) to prevent dust from spreading to the outside. In the static state, the magnet bar (23) cooperates with the magnet block to ensure that the baffle (22) and the side wall of the feeding pipe (14) are attracted to each other to prevent dust from spreading to the outside; S4: The quartz sand falls into the screening box (31), and the quartz sand is screened through the screening hole (32). Large particles of quartz sand are discharged through the outlet pipe (15) and the conical pipe (16), and small particles of quartz sand fall into the collecting box (12); S5: The rotation of the circular shaft (341) drives the cam (343) to rotate, and the cam (343) squeezes the screening box (31) to move upward, and the four elastic plates (334) slide in the four elastic grooves (332). The spring (333) provides elastic force for the elastic plates (334), so that the screening box (31) moves downward, and the screening box (31) vibrates up and down, thereby improving the screening effect of the screening box (31) on quartz sand; S6: The second bevel gear (53) drives the dust collection shaft (42) to rotate, and the dust collection shaft (42) drives the air suction fan (43) to rotate, so that dust is sucked into the dust collection box (4) through the dust collection elbow (41), and the dust enters the dust collection shell (71), and is blocked and collected by the metal mesh (74), so as to prevent the dust from spreading and polluting the environment; S7: After the processing is completed, the servo motor (81) is stopped, and the handle (75) is pulled to drive the dust collection shell (71), so that the inside can be easily cleaned, and the collection box (12) is pulled to take out the collected fine quartz sand.