Crushing and screening equipment for quartz sand production

Abstract

The invention provides crushing and screening equipment for quartz sand production, and belongs to the technical field of quartz sand production. The equipment comprises a crushing box, a dust blocking shell, a dust blocking plate, a screening barrel, a blocking plate and a blocking air bag. The crushing box comprises a feeding opening formed in the top wall. The dust blocking shell is fixedly arranged at the upper end of the crushing box, and the dust blocking plate is rotationally arranged in the dust blocking shell through a rotating shaft; the screening barrel is connected with the bottom wall of the crushing box through a conveying pipe. The end, away from the conveying pipe, of the screening barrel is open. The blocking plate is arranged at the opening end of the screening barrel, a discharging gap is formed between the blocking plate and the inner wall of the screening barrel, an air bag groove is formed in the side wall of the blocking plate, air holes are formed in the side wall of the air bag groove, and an air cavity is formed in the blocking plate; the blocking air bag is arranged in the air bag groove and communicated with the air cavity through the air hole. According to the crushing and screening equipment for quartz sand production, quartz sand micro powder generated in the crushing process can be prevented from escaping from a feeding opening, and quartz sand can be efficiently screened.

Description

Technical Field

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

[0002] Quartz sand, with its hardness, wear resistance, and chemical stability, has extremely wide applications in many industries, including glass manufacturing, casting, ceramics production, chemical raw materials, plastics and rubber, and abrasive filter media. Currently, many companies use quartz as the initial raw material to produce quartz sand. In the entire production process, crushing and screening equipment plays a crucial role in processing quartz to the appropriate particle size.

[0003] Because quartz sand powder is extremely fine and has a certain degree of buoyancy, some of the powder generated during the crushing and screening of quartz stone in existing equipment will escape from the feed inlet. This escaped powder not only permeates the working environment, posing a serious threat to the health of workers if inhaled over a long period, but it also adheres to critical components of the equipment, accelerating wear. Furthermore, existing equipment typically uses screening plates as the main screening component for quartz sand, but the fixed installation of these plates severely impacts the screening efficiency. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a crushing and screening device for quartz sand production, so as to at least partially solve the problems mentioned in the background art.

[0005] This invention provides the following technical solution: A crushing and screening device for quartz sand production, comprising: Crushing box, including a feed inlet located on the top wall; A dustproof shell is fixedly installed at the top of the crushing box, and the dustproof shell is connected to the inside of the crushing box through the feed port; A dust baffle plate is rotatably mounted inside a dust baffle housing via a rotating shaft. The dust baffle plate is used to prevent the quartz sand powder generated during crushing from escaping from the feed port, and to feed the quartz sand by rotating the dust baffle plate. The screening cylinder is connected to the bottom wall of the crushing box via a conveying pipe. The screening cylinder is configured to be driven to rotate in order to screen the quartz sand inside. The end of the screening cylinder away from the conveying pipe is open. A sealing plate is provided at the open end of the screening cylinder. A discharge gap is provided between the sealing plate and the inner wall of the screening cylinder. An air bladder groove is provided on the side wall of the sealing plate. An air hole is provided on the side wall of the air bladder groove. An air chamber is provided inside the sealing plate. The sealing airbag is located in the airbag groove and is connected to the air chamber through air holes. When the sealing airbag expands, it seals the discharge gap. Specifically, when the sealing airbag is inflated, the expanded sealing airbag seals the discharge gap, making the screening cylinder a complete cavity and preventing quartz sand from being discharged from the discharge gap when the screening cylinder rotates. When the sealing airbag returns to its original state and is recycled back into the airbag groove, the unscreened quartz sand in the screening cylinder is discharged from the discharge gap as the screening cylinder rotates.

[0006] Furthermore, the sealing plate has an extension column on one side wall inside the screening cylinder. The extension column has an extension cavity that communicates with the air cavity. A piston is slidably installed in the extension cavity. A sliding column is connected to the piston and is slidably installed on the side wall of the extension column. One end of the sliding column is equipped with a protective cover. The protective cover is configured as a sliding cover outside the sealing plate and is used to protect the sealing airbag. A return spring is sleeved on the sliding column, and the two ends of the return spring are respectively connected to the extension column and the protective cover.

[0007] Furthermore, a crushing and screening device for quartz sand production also includes a collection cylinder. The two ends of the screening cylinder are rotatably mounted on opposite side walls of the collection cylinder via hollow shafts. The hollow shaft connected to the conveying pipe is a feeding shaft, and another set of hollow shafts is a drive shaft. The conveying pipe is rotatably connected to the feeding shaft. The drive shaft is connected to the screening cylinder via a connecting plate. The sealing plate is connected to the drive shaft. A discharge trough is provided on the bottom wall of the collection cylinder.

[0008] Furthermore, a screening motor is provided on the side wall of the collecting cylinder, a drive gear is fixedly provided on the output end of the screening motor, and a driven gear is fixedly provided on the drive shaft, with the drive gear and the driven gear meshing.

[0009] Furthermore, an air pump is provided on the side wall of the collecting cylinder, and the air pump is connected to the drive shaft through an air pipe, which is also connected to the drive shaft.

[0010] Furthermore, the upper end of the dustproof shell is provided with a raw material box, and the bottom wall of the raw material box is provided with a discharge port, and the raw material box is connected to the interior of the dustproof shell through the discharge port.

[0011] Furthermore, multiple sets of dust baffles are provided along the circumference of the rotating shaft. The distance between two adjacent sets of dust baffles is greater than the size of the feed opening. This distance allows the quartz stone in the raw material box to enter between the two sets of dust baffles, and as the dust baffles rotate, the quartz stone is fed into the crushing box.

[0012] Furthermore, the crushing box is equipped with a crushing mechanism, which includes a crushing motor and a crushing shaft. A protrusion is provided on the bottom wall of the crushing box, the crushing motor is located inside the protrusion, the crushing shaft is connected to the output end of the crushing motor, a crushing disc is provided on the crushing shaft, and a crushing blade is provided on the crushing disc.

[0013] Furthermore, the raised platform is a conical platform, the bottom wall of the crushing box is funnel-shaped, the bottom wall of the crushing box is provided with a discharge port, the conveying pipe is connected to the discharge port, the discharge port is located between the raised platform and the bottom wall of the crushing box, and a scraper is fixedly provided on the crushing shaft.

[0014] Furthermore, at least two sets of discharge ports are provided on the bottom wall of the crushing box, and the screening cylinder is set corresponding to the discharge ports.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: 1. By setting up a baffle plate to block the feed port, the quartz sand powder generated during the crushing process of quartz stone is prevented from escaping from the feed port; and the rotating baffle plate can further improve the smoothness of quartz stone feeding and prevent the feeding from getting stuck. 2. By rotating the screening cylinder, the quartz sand is screened, which improves the screening efficiency. The size of the discharge gap is controlled by the setting of the sealing airbag, which enables convenient adjustment of the screening and discharge states of the screening cylinder. At the same time, the setting of the protective cover protects the sealing airbag when the quartz sand is discharged from the discharge gap, preventing the quartz sand from being embedded in the airbag groove. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of the structure in the main view direction according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the main cross-sectional structure of the collecting cylinder and the screening cylinder according to an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of part A; Figure 5 This is a three-dimensional cross-sectional view of the material collecting cylinder according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the meshing state of the driving gear and the driven gear in an embodiment of the present invention; Figure 7This is a three-dimensional cross-sectional view of the connection between the raw material box, dustproof shell, and crushing box in an embodiment of the present invention.

[0017] The components are as follows: 1. Crushing box; 2. Dustproof shell; 3. Dustproof plate; 4. Rotating shaft; 5. Screening cylinder; 6. Conveying pipe; 7. Sealing plate; 8. Discharge gap; 9. Airbag groove; 10. Air hole; 11. Air chamber; 12. Sealing airbag; 13. Extension column; 14. Extension cavity; 15. Piston; 16. Sliding column; 17. Protective cover; 18. Return spring; 19. Collecting cylinder; 20. Feeding shaft; 21. Drive shaft; 22. Connecting plate; 23. Discharge chute; 24. Screening motor; 25. Drive gear; 26. Driven gear; 27. Air pump; 28. Air pipe; 29. ​​Raw material box; 30. Discharge port; 31. Crushing motor; 32. Crushing shaft; 33. Protrusion platform; 34. Crushing disc; 35. Crushing blade; 36. Discharge port; 37. Scraper. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0020] See Figures 1-4 This embodiment provides a crushing and screening device for quartz sand production, comprising: Crushing box 1, including a feed inlet located on the top wall; Dust baffle 2 is fixedly installed at the upper end of crushing box 1, and dust baffle 2 is connected to the inside of crushing box 1 through the feed port; Multiple sets of dust baffles 3 are rotatably installed inside the dust baffle shell 2 via a rotating shaft 4. The dust baffles 3 are used to prevent the quartz sand powder generated during crushing from escaping from the feed port, and to feed the quartz sand by rotating the dust baffles 3. The screening cylinder 5 is connected to the bottom wall of the crushing box 1 through the conveying pipe 6. The conveying pipe 6 is rotatably connected to the screening cylinder 5. The screening cylinder is configured to be driven to rotate in order to screen the quartz sand inside. The quartz sand produced by crushing in the crushing box 1 is conveyed to the screening cylinder 5 through the conveying pipe 6, and the quartz sand is efficiently screened by the rotation of the screening cylinder 5. The end of the screening cylinder 5 away from the conveying pipe 6 is set to be open. A blocking plate 7 is provided at the open end of the screening cylinder 5. A discharge gap 8 is provided between the blocking plate 7 and the inner wall of the screening cylinder 5. An air bladder groove 9 is provided on the side wall of the blocking plate 7. An air hole 10 is provided on the side wall of the air bladder groove 9. An air chamber 11 is provided inside the blocking plate 7. The sealing airbag 12 is located in the airbag groove 9 and is connected to the air chamber 11 through the air hole 10. When the sealing airbag 12 expands, it seals the discharge gap 8 to prevent the quartz sand from being discharged from the discharge gap 8 when the screening cylinder 5 rotates to perform efficient screening. When the sealing airbag 12 is not inflated, the rotation of the screening cylinder 5 will discharge the large particles of quartz sand remaining in the screening cylinder 5 after screening from the discharge gap 8.

[0021] It should be noted that a feeding motor is installed on the side wall of the dustproof shell 2, and the rotating shaft 4 is connected to the output end of the feeding motor. The feeding motor drives the dustproof plate 3 to rotate through the rotating shaft 4, adjusting the position of the dustproof plate 3 inside the dustproof shell 2. The sealing airbag 12 used in this embodiment is an elastic airbag. The core characteristic of this type of airbag is that it has good elastic recovery ability, relying on the elasticity of the material itself or the structural design to achieve the cycle of inflation and deflation.

[0022] In operation, the crushed quartz blocks are first added between the two sets of dust baffles 3. The feeding motor is then started, causing the dust baffles 3 to rotate. As the dust baffles 3 rotate, they synchronously push the quartz blocks within the dust baffle housing 2. The quartz blocks are then pushed by the dust baffles 3 to the feeding port, from which they enter the crushing chamber 1. Simultaneously, the two adjacent sets of dust baffles 3 within the dust baffle housing 2 block the feeding port, preventing the quartz sand powder generated during the crushing process from escaping from the feeding port. Meanwhile, the quartz sand produced in the crushing chamber 1 enters the screening cylinder 5 through the conveying pipe 6. As the screening cylinder 5 rotates, it screens the quartz sand. After screening, the sealing airbag 12 is evacuated. The sealing airbag 12 returns to its original shape due to its own elasticity, and it no longer blocks the discharge gap 8. At this point, the screening cylinder 5 rotates, and the large quartz sand particles remaining inside are discharged from the discharge gap 8.

[0023] Specifically, see Figure 3 and Figure 4 In this embodiment, the sealing plate 7 is provided with an extension column 13 on one side wall inside the screening cylinder 5. An extension cavity 14 is provided inside the extension column 13, which is connected to the air cavity 11. A piston 15 is slidably provided inside the extension cavity 14. A sliding column 16 is connected to the piston 15. The sliding column 16 is slidably provided on the side wall of the extension column 13. A protective cover 17 is provided at one end of the sliding column 16. The protective cover 17 is configured to slide outside the sealing plate 7 and is used to protect the sealing airbag 12. A return spring 18 is sleeved on the sliding column 16. The two ends of the return spring 18 are connected to the extension column 13 and the protective cover 17, respectively.

[0024] When in use, when the air chamber 11 is not inflated, the sealing airbag 12 is housed in the airbag groove 9. The protective cover 17 is placed on the outside of the sealing plate 7 under the action of the return spring 18 to protect the sealing airbag 12 and prevent large particles of quartz sand from getting stuck in the airbag groove 9 when they are discharged from the discharge gap 8, which would affect the inflation and expansion of the sealing airbag 12 and its return to its uninflated state. When the air chamber 11 is inflated, the gas pushes the piston 15 to slide in the extension chamber 14. The piston 15 drives the slide column 16 to slide, and the slide column 16 drives the protective cover 17 to move away from the outside of the sealing airbag 12. The return spring 18 is in an extended state, and the sealing airbag 12 expands due to the inflation of the air chamber 11, thus sealing the discharge gap 8.

[0025] Specifically, see Figures 2-5 In this embodiment, a crushing and screening device for quartz sand production also includes a collection cylinder 19. The two ends of the screening cylinder 5 are rotatably mounted on opposite side walls of the collection cylinder 19 via hollow shafts. The hollow shaft connected to the conveying pipe 6 is the feed shaft 20, and another set of hollow shafts is the drive shaft 21. The conveying pipe 6 is rotatably connected to the feed shaft 20. The drive shaft 21 is connected to the screening cylinder 5 via a connecting plate 22, and the sealing plate 7 is connected to the drive shaft 21. When the drive shaft 21 rotates, it drives the screening cylinder 5 to rotate inside the collection cylinder 19, and at the same time drives the sealing plate 7 to rotate synchronously with the screening cylinder 5. A discharge chute 23 is provided on the bottom wall of the collection cylinder 19. The quartz sand screened out in the collection cylinder 19 and the large particles of powder discharged are discharged through the discharge chute 23.

[0026] It should be noted that, in a preferred embodiment, two sets of discharge troughs 23 are provided on the bottom wall of the collecting cylinder 19, and the two sets of discharge troughs 23 are respectively located near the two ends of the collecting cylinder 19. The two discharge troughs 23 are used to discharge the quartz sand that meets the requirements after screening and the large-particle quartz sand that is subsequently discharged.

[0027] Specifically, see Figure 6 In this embodiment, a screening motor 24 is provided on the side wall of the collecting cylinder 19. A drive gear 25 is fixedly provided on the output end of the screening motor 24, and a driven gear 26 is fixedly provided on the drive shaft 21. The drive gear 25 and the driven gear 26 mesh. When the screening motor 24 is started, the screening motor 24 drives the drive gear 25 to rotate. Through the meshing of the drive gear 25 and the driven gear 26, the drive shaft 21 is driven to rotate, thereby driving the screening cylinder 5 to rotate. When the screening cylinder 5 rotates, the quartz sand entering it is screened.

[0028] Specifically, see Figure 3 and Figure 6 In this embodiment, an air pump 27 is provided on the side wall of the collecting cylinder 19. The air pump 27 is connected to the drive shaft 21 through an air pipe 28. The air pipe 28 is connected to the drive shaft 21. The air pump 27 realizes the pumping and filling of air in the air chamber 11.

[0029] Specifically, see Figure 7 In this embodiment, the upper end of the dustproof shell 2 is provided with a raw material box 29, and the bottom wall of the raw material box 29 is provided with a discharge port 30. The raw material box 29 is connected to the interior of the dustproof shell 2 through the discharge port 30. Multiple sets of dustproof plates 3 are provided along the circumference of the rotating shaft 4. The distance between two adjacent sets of dustproof plates 3 is greater than the size of the discharge port 30. This distance setting allows the quartz stone in the raw material box to enter between the two sets of dustproof plates, and the quartz stone is fed into the crushing box as the dustproof plates rotate. Furthermore, the cooperation of multiple sets of dustproof plates 3 completes the sealing of the discharge port when the quartz stone in the crushing box is crushed, preventing the quartz sand powder produced by the crushing box 1 from escaping from the discharge port.

[0030] When in use, the crushed quartz stone is placed into the raw material box 29 and falls through the discharge port 30 between the two dust baffles 3. As the rotating shaft 4 drives the dust baffles 3 to rotate, the quartz stone is pushed into the crushing box 1. The dust baffles 3 can both block the dust at the feeding port and push the quartz stone to feed, thus preventing the quartz stone from getting stuck.

[0031] Specifically, see Figure 7 In this embodiment, the crushing box 1 is provided with a crushing mechanism, which includes a crushing motor 31 and a crushing shaft 32. A protrusion 33 is provided on the bottom wall of the crushing box 1. The crushing motor 31 is located in the protrusion 33. The crushing shaft 32 is connected to the output end of the crushing motor 31. A crushing disc 34 is provided on the crushing shaft 32. A crushing blade 35 is provided on the crushing disc 34.

[0032] It should be noted that the crushing disc 34 has multiple sets along the height of the crushing shaft 32, and the crushing blades 35 on the multiple sets of crushing discs 34 are staggered. In use, the crushing motor 31 is started, which drives the crushing shaft 32 to rotate. The crushing shaft 32 drives the crushing discs 34 and the crushing blades 35 to rotate, and the crushing blades 35 crush the quartz stone.

[0033] Specifically, see Figure 7 In this embodiment, the raised platform 33 is a conical platform, the bottom wall of the crushing box 1 is funnel-shaped, and the bottom wall of the crushing box 1 is provided with a discharge port 36. The conveying pipe 6 is connected to the discharge port 36. The discharge port 36 is located between the raised platform 33 and the bottom wall of the crushing box 1. A scraper 37 is fixed on the crushing shaft 32. Through the raised platform 33 and the funnel-shaped bottom wall of the crushing box 1, the quartz sand can slide better to the discharge port 36, and the scraper 37 can scrape the quartz sand powder to discharge.

[0034] Specifically, see Figure 1 , Figure 2 and Figure 7In this embodiment, at least two sets of discharge ports 36 are provided on the bottom wall of the crushing box 1, and the screening cylinders 5 are arranged corresponding to the discharge ports 36. The screening efficiency of quartz sand is ensured by setting two or more sets of screening cylinders 5.

[0035] The present invention provides a crushing and screening equipment for quartz sand production, the working principle of which is as follows: (1) Start the feeding motor. The feeding motor drives the baffle plate to rotate through the rotating shaft 4. During the rotation of the baffle plate, the quartz stone is pushed to the feeding port for feeding.

[0036] (2) Start the crushing motor 31. The crushing motor 31 drives the crushing shaft 32 to rotate. The crushing shaft 32 drives the crushing disc 34 to rotate. The crushing disc 34 drives the crushing blade 35 to crush the quartz stone entering the crushing box 1. Under the action of the dust baffle 3, the quartz sand powder generated during the crushing process can be prevented from escaping from the feed port. The dust baffle 3 can also push the quartz stone smoothly to the feed port, which can effectively prevent the feed port from getting stuck.

[0037] (3) The crushed quartz sand enters the screening cylinder 5 through the discharge port 36 along the conveying pipe 6. Driven by the screening motor 24, the screening cylinder 5 rotates, and the rotating screening cylinder 5 screens the quartz sand inside. After each screening cycle, the dust cover 2 stops feeding, the air pump 27 extracts air, the sealing airbag 12 contracts, and the protective cover 17 is reset under the action of the return spring 18. At this time, when the screening cylinder 5 rotates, the large particles of quartz sand inside can be discharged from the opening end of the screening cylinder 5.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, material, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crushing and screening device for quartz sand production, characterized in that, include: Crushing box (1), including a feed inlet provided on the top wall; Dust shield (2) is fixedly installed at the upper end of the crushing box (1); The dust baffle (3) is rotatably installed inside the dust baffle shell (2) via the rotating shaft (4). The dust baffle (3) is used to prevent the quartz sand powder generated by crushing from escaping from the feed port, and to feed the quartz sand by rotating the dust baffle (3). The screening cylinder (5) is connected to the bottom wall of the crushing box (1) through the conveying pipe (6). The screening cylinder (5) is configured to be driven to rotate in order to screen the quartz sand inside. The end of the screening cylinder (5) away from the conveying pipe (6) is set to be open. A sealing plate (7) is provided at the opening end of the screening cylinder (5). A discharge gap (8) is provided between the sealing plate (7) and the inner wall of the screening cylinder (5). An air bladder groove (9) is provided on the side wall of the sealing plate (7). An air hole (10) is provided on the side wall of the air bladder groove (9). An air chamber (11) is provided inside the sealing plate (7). The sealing airbag (12) is located in the airbag groove (9) and is connected to the air chamber (11) through the air hole (10). When the sealing airbag (12) expands, it seals the discharge gap (8).

2. The crushing and screening equipment for quartz sand production according to claim 1, characterized in that, The sealing plate (7) is provided with an extension column (13) on one side wall inside the screening cylinder (5). An extension cavity (14) is provided inside the extension column (13). The extension cavity (14) is connected to the air cavity (11). A piston (15) is slidably provided inside the extension cavity (14). A sliding column (16) is connected to the piston (15). The sliding column (16) is slidably provided on the side wall of the extension column (13). A protective cover (17) is provided at one end of the sliding column (16). The protective cover (17) is configured as a sliding cover outside the sealing plate (7). The protective cover (17) is used to protect the sealing airbag (12). A return spring (18) is sleeved on the sliding column (16). The two ends of the return spring (18) are respectively connected to the extension column (13) and the protective cover (17).

3. The crushing and screening equipment for quartz sand production according to claim 1, characterized in that, It also includes a collection cylinder (19), with the two ends of the screening cylinder (5) rotatably mounted on opposite side walls of the collection cylinder (19) via hollow shafts. The hollow shaft connected to the conveying pipe (6) is the feed shaft (20), and another set of hollow shafts is the drive shaft (21). The conveying pipe (6) is rotatably connected to the feed shaft (20). The drive shaft (21) is connected to the screening cylinder (5) via a connecting plate (22). The sealing plate (7) is connected to the drive shaft (21). A discharge trough (23) is provided on the bottom wall of the collection cylinder (19).

4. The crushing and screening equipment for quartz sand production according to claim 3, characterized in that, The side wall of the collecting cylinder (19) is provided with a screening motor (24), the output end of the screening motor (24) is fixedly provided with a drive gear (25), and the drive shaft (21) is fixedly provided with a driven gear (26). The drive gear (25) and the driven gear (26) mesh.

5. The crushing and screening equipment for quartz sand production according to claim 3, characterized in that, An air pump (27) is provided on the side wall of the collecting cylinder (19). The air pump (27) is connected to the drive shaft (21) through an air pipe (28). The air pipe (28) is connected to the drive shaft (21).

6. The crushing and screening equipment for quartz sand production according to claim 1, characterized in that, The upper end of the dustproof shell (2) is provided with a raw material box (29), and the bottom wall of the raw material box (29) is provided with a discharge port (30). The raw material box (29) is connected to the interior of the dustproof shell (2) through the discharge port (30).

7. The crushing and screening equipment for quartz sand production according to claim 6, characterized in that, The dust baffle (3) is provided in multiple sets along the circumference of the rotating shaft (4), and the distance between two adjacent sets of dust baffles (3) is greater than the size of the discharge port (30).

8. The crushing and screening equipment for quartz sand production according to claim 1, characterized in that, The crushing box (1) is equipped with a crushing mechanism, which includes a crushing motor (31) and a crushing shaft (32). A protrusion (33) is provided on the bottom wall of the crushing box (1). The crushing motor (31) is located inside the protrusion (33). The crushing shaft (32) is connected to the output end of the crushing motor (31). A crushing disc (34) is provided on the crushing shaft (32). A crushing blade (35) is provided on the crushing disc (34).

9. The crushing and screening equipment for quartz sand production according to claim 8, characterized in that, The raised platform (33) is a conical platform, the bottom wall of the crushing box (1) is funnel-shaped, the bottom wall of the crushing box (1) is provided with a discharge port (36), the conveying pipe (6) is connected to the discharge port (36), the discharge port (36) is located between the raised platform (33) and the bottom wall of the crushing box (1), and a scraper (37) is fixedly provided on the crushing shaft (32).

10. The crushing and screening equipment for quartz sand production according to claim 9, characterized in that, At least two sets of discharge ports (36) are provided on the bottom wall of the crushing box (1), and the screening cylinder (5) is set in correspondence with the discharge ports (36).

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