A method for producing and processing high-quality photovoltaic quartz sand

Abstract

The application belongs to the technical field of quartz sand production, and discloses a production and processing method of high-quality photovoltaic quartz sand, which comprises the following steps: step one: first spiral blade rotation makes the heated quartz sand in the hopper fall to the second cylinder through the first cylinder; step two: the driving mechanism drives the extraction assembly to extract the pickling solution in the cylinder body to rise to the second cylinder to contact with the quartz sand, the quartz sand will have a thermal shock effect, and the quartz sand will generate certain micro-cracks and pores; step three: the second cylinder rotation makes the quartz sand be thrown out from the pipe, at the same time, the tooth ring drives the fixed plate to rotate, the quartz sand will impact the fixed plate, the crushing is completed, the impurities are exposed outside, and the stirring rod stirs and mixes them; step four: the lifting assembly drives the extraction assembly to rise, at this time, the extraction assembly extracts the pickling solution and the quartz sand mixture, and then throws out from the pipe, impacts the fixed plate, and accelerates the impurities on the surface of the quartz sand to fall. The application solves the problem of slow purification efficiency of the existing device.

Description

Technical Field

[0001] This invention relates to the field of quartz sand production technology, specifically a method for producing and processing high-quality photovoltaic quartz sand. Background Technology

[0002] Quartz sand is quartz particles produced by crushing and processing quartz stone. It is an important industrial mineral raw material, a non-hazardous chemical, and is widely used in glass, casting, ceramics and fireproof materials, ferrosilicon smelting, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter media, and other industries. Photovoltaic quartz sand is produced by converting quartz sand (mainly composed of silicon dioxide) into photovoltaic-grade quartz sand (or photovoltaic-grade silica sand) with extremely high purity.

[0003] Currently, the production of photovoltaic quartz sand mainly includes: raw material screening, physical sorting, chemical treatment, high-temperature calcination, fine purification, drying, screening, and packaging. Among these, the acid washing step in the chemical treatment is a key step in further purifying the quartz sand and removing impurities. However, existing quartz sand purification equipment faces some challenges in the acid washing process.

[0004] Chinese patent application number 202310081825.X discloses a "purification device for iron impurities in high-purity quartz sand", which includes a cylinder, a funnel and a guide tube connected to the cylinder, a stirring mechanism in the cylinder, a stirring mechanism including a rotating shaft and a stirring plate, a mixing mechanism for mixing quartz sand and pickling solution on one side of the stirring plate, a mixing mechanism including a shell, a paddle and a discharge pipe, a notch in the stirring plate, the shell and the notch being interconnected, the paddle being rotatably installed inside the shell, and the discharge pipe being fixedly connected to the upper end of the shell and being interconnected with the shell.

[0005] This device can uniformly acid-wash quartz sand, but because quartz sand easily contains impurities, it can only improve the purity of the quartz sand by extending the acid-washing time, and cannot achieve a higher purification effect in a short time, which undoubtedly reduces production efficiency. To solve this problem, we propose a production and processing method for high-quality photovoltaic quartz sand. Summary of the Invention

[0006] The purpose of this invention is to provide a method for producing high-quality photovoltaic quartz sand, which solves the problem of slow purification efficiency in existing equipment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for producing and processing high-quality photovoltaic quartz sand, comprising the following steps:

[0008] Step 1: The drive mechanism drives the first spiral blade to rotate, causing the heated quartz sand in the hopper to descend through the first cylinder into the second cylinder;

[0009] Step 2: When the heated quartz sand falls into the second cylinder, the drive mechanism drives the extraction component to extract the pickling liquid in the cylinder and rise into the second cylinder to contact the quartz sand. At this time, the quartz sand will experience thermal shock, causing certain micro-cracks and pores to be generated in the quartz sand.

[0010] Step 3: When the quartz sand undergoes thermal shock, the drive mechanism drives the second cylinder to rotate, causing the quartz sand to be thrown out of the round tube. At the same time, the toothed ring drives the fixed plate to rotate. Since the fixed plate and the round tube rotate in opposite directions, the quartz sand will hit the fixed plate, completing the crushing and exposing the impurities. Then it falls to the bottom of the cylinder, where the stirring rod stirs and mixes it.

[0011] Step 4: When the quartz sand is added, the lifting component drives the extraction component to rise. At this time, the extraction component draws the acid pickling solution and quartz sand mixture into the second cylinder, and then throws it out from the round tube to hit the fixed plate, which can accelerate the falling off of impurities on the surface of the quartz sand, thereby improving the acid pickling efficiency.

[0012] Preferably, the driving mechanism includes a servo motor, which is installed on the lower end face of the cylinder. The output shaft of the servo motor passes through the cylinder and is fixedly installed with a first round rod. The first round rod is fixedly connected to the first spiral blade. A support frame is rotatably installed on the upper end face of the first round rod, and the outer wall of the support frame is installed on the inner wall of the cylinder.

[0013] Preferably, the first cylinder is installed on the lower end face of the hopper, the outer wall of the first cylinder is sleeved inside the second cylinder, a second gear is fixedly installed on the outer wall of the second cylinder, a first gear is symmetrically meshed on both sides of the second gear, and a toothed ring is meshed on the side of the first gear away from the second gear, and the toothed ring is rotatably installed on the inner wall of the cylinder.

[0014] Preferably, the extraction assembly includes a third cylinder with filter holes on its outer wall, the third cylinder being rotatably connected to the second cylinder, and a second spiral blade abutting against the inner wall of the third cylinder, the second spiral blade being fixedly connected to the first rod.

[0015] Preferably, a third round rod is sleeved on the outer wall of the first round rod, and the side of the third round rod away from the first round rod is fixedly connected to the second cylinder.

[0016] Preferably, a support ring is rotatably mounted on the outer wall of the second cylinder, and a plurality of connecting rods are fixedly mounted on the upper end face of the support ring. A support plate is fixedly mounted through the hopper on one side of the connecting rods, and an electric telescopic rod is mounted on the upper end face of the support plate. The electric telescopic rod is fixedly connected to the cylinder.

[0017] Preferably, the outer wall of the cylinder is equipped with an inlet pipe and a outlet pipe, and a number of support legs are installed on the lower end face of the cylinder.

[0018] Preferably, limit rods are symmetrically installed on the outer wall of the third cylinder, and a fixing seat is sleeved on the limit rod and the outer wall of the third cylinder. The lower end face of the fixing seat is fixedly installed on the inner wall of the cylinder, and the outer wall of the fixing seat has symmetrical openings.

[0019] Preferably, a second round rod is installed on the lower end face of the first gear, the outer wall of the second round rod is fixedly connected to the stirring rod, the side of the second round rod away from the first gear is rotatably connected to the cylinder, and the hopper is fixedly installed on the inner wall of the cylinder.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] I. This invention is equipped with a fixing plate and an extraction component. When the quartz sand is heated in the hopper and falls into the second cylinder and comes into contact with the pickling liquid extracted by the second spiral blade below, due to the thermal shock effect, certain micro-cracks and pores will be generated. At this time, the quartz sand is thrown out through the circular tube outside the third cylinder and impacts the fixing plate, which will cause the quartz sand to be broken and the impurities to be exposed. Then it falls into the pickling liquid, thereby improving the efficiency of pickling and purification.

[0022] II. The present invention is equipped with a lifting component. When an appropriate amount of quartz sand is added, the electric telescopic rod retracts, which drives the support plate to rise. The support plate drives the connecting rod to rise, the connecting rod drives the support ring to rise, the support ring drives the second cylinder to rise, and the second cylinder drives the third cylinder to rise. At this time, the third cylinder no longer blocks the opening on the outer wall of the fixed seat. The second spiral blade will draw up the mixture of quartz sand and pickling solution and then discharge it from the round pipe. At this time, the binding force of impurities in the soaked quartz sand decreases, and the impurities will fall off, thereby improving the purification efficiency.

[0023] After pickling is complete, the electric telescopic rod extends, returning the third cylinder to its initial position. At this point, the opening is closed, and the pickling solution is drawn from the filter holes by the second spiral blades. The pickling solution then rinses the interior to prevent quartz sand residue. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram from another perspective of the present invention;

[0026] Figure 3 This is a schematic diagram of the interior of the cylinder of the present invention;

[0027] Figure 4 This is a cross-sectional view of the present invention;

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0029] Figure 6 for Figure 4 Enlarged diagram of point B in the middle.

[0030] In the diagram: 1. Cylinder; 101. Inlet pipe; 2. Discharge pipe; 3. Electric telescopic rod; 4. Support leg; 5. Discharge pipe; 6. Servo motor; 7. Support frame; 8. Hopper; 9. First round rod; 901. Baffle; 10. First spiral blade; 11. Fixing plate; 12. Round tube; 13. Gear ring; 14. First gear; 15. Second round rod; 16. Stirring rod; 17. Fixing seat; 18. Opening; 19. Support plate; 20. Connecting rod; 21. First cylinder; 22. Support ring; 23. Second cylinder; 24. Second gear; 25. Third cylinder; 26. Filter hole; 27. Third round rod; 28. Second spiral blade; 29. ​​Limiting rod. Detailed Implementation

[0031] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0032] Please see Figures 1 to 6 This invention provides a technical solution: a method for producing and processing high-quality photovoltaic quartz sand, comprising the following steps:

[0033] Step 1: The drive mechanism drives the first spiral blade 10 to rotate, causing the heated quartz sand in the hopper 8 to descend through the first cylinder 21 into the second cylinder 23;

[0034] Step 2: When the heated quartz sand falls into the second cylinder 23, the drive mechanism drives the extraction component to extract the pickling liquid in the cylinder 1 and rise into the second cylinder 23 to contact the quartz sand. At this time, the quartz sand will experience thermal shock, causing certain microcracks and pores to be generated in the quartz sand.

[0035] Step 3: When the quartz sand undergoes thermal shock, the drive mechanism drives the second cylinder 23 to rotate, causing the quartz sand to be thrown out from the round tube 12. At the same time, the toothed ring 13 drives the fixed plate 11 to rotate. Since the fixed plate 11 and the round tube 12 rotate in opposite directions, the quartz sand will hit the fixed plate 11, completing the crushing and exposing the impurities. Then it falls to the bottom of the cylinder 1, where the stirring rod 16 stirs and mixes it.

[0036] Step 4: When the quartz sand is added, the lifting component drives the extraction component to rise. At this time, the extraction component extracts the acid washing liquid and quartz sand mixture into the second cylinder 23, and then throws it out from the round tube 12 to hit the fixed plate 11, which can accelerate the falling off of impurities on the surface of the quartz sand.

[0037] Furthermore, such as Figure 2 and Figure 3As shown, the driving mechanism includes a servo motor 6, which is mounted on the lower end face of the cylinder 1. The output shaft of the servo motor 6 passes through the cylinder 1 and is fixedly mounted with a first round rod 9. The first round rod 9 is fixedly connected to the first spiral blade 10. A support frame 7 is rotatably mounted on the upper end face of the first round rod 9. The outer wall of the support frame 7 is mounted on the inner wall of the cylinder 1. A baffle 901 is symmetrically rotatably mounted on the inner wall of the first cylinder 21. The side of the baffle 901 away from the first cylinder 21 abuts against the outer wall of the first round rod 9. A torsion spring is installed at the rotatable connection between the baffle 901 and the first cylinder 21. A heating wire (not shown in the figure) is installed inside the hopper 8.

[0038] The baffle 901 can prevent the quartz sand in the hopper 8 from falling. After heating is completed, the servo motor 6 rotates, which drives the first round rod 9 to rotate. The first round rod 9 drives the first spiral blade 10 to rotate. The first spiral blade 10 causes the quartz sand in the hopper 8 to fall and squeeze the baffle 901, thus realizing the feeding.

[0039] Furthermore, such as Figure 3 As shown, the first cylinder 21 is installed on the lower end face of the hopper 8, the outer wall of the first cylinder 21 is sleeved inside the second cylinder 23, the outer wall of the second cylinder 23 is fixedly installed with a second gear 24, the second gear 24 is symmetrically meshed with a first gear 14 on both sides, the first gear 14 is meshed with a toothed ring 13 on the side away from the second gear 24, and the toothed ring 13 is rotatably installed on the inner wall of the cylinder 1.

[0040] When the second cylinder 23 rotates, it drives the second gear 24 to rotate, which in turn drives the first gear 14 to rotate. The first gear 14 then drives the gear ring 13 to rotate. At this time, the gear ring 13 and the second cylinder 23 rotate in opposite directions, so the servo motor 6 does not need to rotate too fast to complete the crushing.

[0041] Furthermore, such as Figure 5 and Figure 6 As shown, the extraction assembly includes a third cylinder 25, the outer wall of the third cylinder 25 is provided with filter holes 26, the third cylinder 25 is rotatably connected to the second cylinder 23, the inner wall of the third cylinder 25 is abutted by a second spiral blade 28, and the second spiral blade 28 is fixedly connected to the first round rod 9.

[0042] When the first rod 9 rotates, it drives the second spiral blade 28 to rotate. At this time, the pickling solution enters the third cylinder 25 through the filter hole 26.

[0043] Furthermore, such as Figure 5 As shown, a third round rod 27 is sleeved on the outer wall of the first round rod 9, and the side of the third round rod 27 away from the first round rod 9 is fixedly connected to the second cylinder 23;

[0044] When the first round rod 9 rotates, it drives the second round cylinder 23 to rotate through the third round rod 27.

[0045] Furthermore, such as Figure 3 As shown, a support ring 22 is rotatably installed on the outer wall of the second cylinder 23. Several connecting rods 20 are fixedly installed on the upper end face of the support ring 22. A support plate 19 is fixedly installed through the hopper 8 on one side of the connecting rod 20. An electric telescopic rod 3 is installed on the upper end face of the support plate 19. The electric telescopic rod 3 is fixedly connected to the cylinder 1.

[0046] When the electric telescopic rod 3 is working, it drives the support ring 22 to move through the connecting rod 20. The support ring 22 drives the second cylinder 23 to move on the first cylinder 21, and at the same time drives the third cylinder 25 to move on the fixed seat 17.

[0047] Furthermore, such as Figure 1 As shown, the outer wall of the cylinder 1 is equipped with an inlet pipe 101 and a discharge pipe 5, and a number of support legs 4 are installed on the lower end face of the cylinder 1.

[0048] The inlet pipe 101 is used to inject pickling solution, and the outlet pipe 5 discharges the pickled quartz sand.

[0049] Furthermore, such as Figure 6 As shown, limit rods 29 are symmetrically installed on the outer wall of the third cylinder 25. The limit rods 29 and the outer wall of the third cylinder 25 are fitted with a fixing seat 17. The lower end face of the fixing seat 17 is fixedly installed on the inner wall of the cylinder 1. The outer wall of the fixing seat 17 is symmetrically provided with openings 18.

[0050] The third cylinder 25 drives the limiting rod 29 to slide on the fixed seat 17, and the limiting rod 29 prevents the third cylinder 25 from rotating.

[0051] Furthermore, such as Figure 3 As shown, a second round rod 15 is installed on the lower end face of the first gear 14. The outer wall of the second round rod 15 is fixedly connected to the stirring rod 16. The side of the second round rod 15 away from the first gear 14 is rotatably connected to the cylinder 1. The hopper 8 is fixedly installed on the inner wall of the cylinder 1.

[0052] The first gear 14 drives the stirring rod 16 to rotate via the second round rod 15.

[0053] Furthermore, such as Figure 4 As shown, the hollow part of the first cylinder 21 is narrower at the top and wider at the bottom, and is circular at the location corresponding to the first spiral blade 10 and square at the location corresponding to the baffle 901.

[0054] Working principle: Step 1: First, inject an appropriate amount of pickling solution into the cylinder 1 through the liquid inlet pipe 101, and then put quartz sand into the cylinder 1 through the feed pipe 2. The quartz sand is heated by the hopper 8.

[0055] Step 2: Control the servo motor 6 to rotate. The servo motor 6 drives the first round rod 9 to rotate. The first round rod 9 drives the first spiral blade 10, the second spiral blade 28 and the third round rod 27 to rotate. When the first spiral blade 10 rotates, it can make the quartz sand in the hopper 8 enter the second cylinder 23 through the first cylinder 21. At the same time, the second spiral blade 28 draws the pickling liquid in the cylinder 1 through the filter hole 26 and rises to the second cylinder 23. At this time, the hot quartz sand comes into contact with the pickling liquid and generates thermal stress, which causes the quartz sand to produce certain microcracks and pores.

[0056] Step 3: At this time, the third round rod 27 drives the second round cylinder 23 to rotate, and the second round cylinder 23 drives the round tube 12 to rotate. At this time, the quartz sand with certain microcracks and pores is thrown out through the round tube 12. At the same time, the second round cylinder 23 drives the first gear 14 to rotate through the second gear 24. The first gear 14 drives the gear ring 13 to rotate, and the gear ring 13 drives the fixed plate 11 to rotate. At this time, the round tube 12 and the fixed plate 11 rotate in opposite directions, and the quartz sand with certain microcracks and pores will be more easily broken and then fall into the cylinder 1, increasing the contact area between impurities and pickling solution, thereby improving pickling efficiency.

[0057] Step 4: When the first gear 14 rotates, it drives the second round rod 15 to rotate. The second round rod 15 drives the stirring rod 16 to rotate. The stirring rod 16 stirs the mixture of quartz sand and pickling solution to make it evenly mixed.

[0058] Step 5: After all the quartz sand in hopper 8 has fallen, hopper 8 stops heating, the electric telescopic rod 3 retracts, driving the support plate 19 to rise. The support plate 19 drives the connecting rod 20 to rise, the connecting rod 20 drives the support ring 22 to rise, the support ring 22 drives the second cylinder 23 to rise, the second cylinder 23 drives the third cylinder 25, the third rod 27 and the second gear 24 to rise. The third rod 27 slides on the first rod 9, and the second gear 24 slides on the first gear 14. At the same time, the third cylinder 25 no longer blocks the opening 18 on the outer wall of the fixed seat 17. The second spiral blade 28 will draw up the mixture of quartz sand and pickling solution and then discharge it from the circular pipe 12. At this time, the binding force of impurities in the mixed quartz sand decreases, and the impurities will fall off, thereby improving the pickling efficiency.

[0059] Step 6: After pickling is completed, the electric telescopic rod 3 extends, allowing the third cylinder 25 to return to its initial position. At this time, the opening 18 is closed, and the pickling liquid is drawn from the filter hole 26 by the second spiral blade 28. The pickling liquid then rinses the interior to prevent quartz sand residue, and finally discharges from the discharge pipe 5.

[0060] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying 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, article, 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for producing high quality photovoltaic quartz sand, characterized in that, The application relates to a processing device for production, which comprises a cylinder (1), a hopper (8), a first cylinder (21), a second cylinder (23), a fixed plate (11), a driving mechanism and an extraction assembly. The driving mechanism comprises a servo motor (6) which is installed on the lower end face of the cylinder (1), and the output shaft of the servo motor (6) is fixedly provided with a first round rod (9) penetrating through the cylinder (1), the first round rod (9) is fixedly connected with a first spiral blade (10), and a supporting frame (7) is rotatably installed on the upper end face of the first round rod (9); and the outer wall of the supporting frame (7) is installed on the inner wall of the cylinder (1). The first cylinder (21) is installed on the lower end face of the hopper (8), the outer wall of the first cylinder (21) is sleeved in the second cylinder (23), the outer wall of the second cylinder (23) is fixedly provided with a second gear (24), the two sides of the second gear (24) are symmetrically engaged with a first gear (14), the side, away from the second gear (24), of the first gear (14) is engaged with a tooth ring (13), and the tooth ring (13) is rotatably installed on the inner wall of the cylinder (1). The extraction assembly comprises a third cylinder (25), the outer wall of the third cylinder (25) is provided with filter holes (26), the third cylinder (25) is rotatably connected with the second cylinder (23), and the inner wall of the third cylinder (25) abuts against a second spiral blade (28); and the second spiral blade (28) is fixedly connected with the first round rod (9). The outer wall of the first round rod (9) is sleeved with a third round rod (27), and the side, away from the first round rod (9), of the third round rod (27) is fixedly connected with the second cylinder (23). The processing method comprises the following steps: Step one: the driving mechanism drives the first spiral blade (10) to rotate, so that the heated quartz sand in the hopper (8) falls into the second cylinder (23) through the first cylinder (21); Step two: when the heated quartz sand falls into the second cylinder (23), the driving mechanism drives the extraction assembly to extract the pickling liquid in the cylinder (1) to rise into the second cylinder (23) and contact the quartz sand; at this time, the quartz sand will have a thermal shock effect, so that the quartz sand generates certain micro-cracks and pores; Step three: after the thermal shock effect of the quartz sand, the driving mechanism drives the second cylinder (23) to rotate, so that the quartz sand is thrown out from the round pipe (12); at the same time, the tooth ring (13) drives the fixed plate (11) to rotate; because the rotating directions of the fixed plate (11) and the round pipe (12) are opposite, the quartz sand will impact the fixed plate (11) to complete crushing, so that impurities are exposed outside, and then fall to the bottom of the cylinder (1); at this time, the stirring rod (16) stirs and mixes the quartz sand; Step four: when the quartz sand is added, the lifting assembly drives the extraction assembly to rise; at this time, the extraction assembly extracts the pickling liquid and the quartz sand mixture into the second cylinder (23), and then throws out from the round pipe (12) to impact the fixed plate (11), so that the impurities on the surface of the quartz sand can be accelerated to fall, thereby improving the pickling efficiency.

2. The method for producing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The outer wall of the second cylinder (23) is rotatably provided with a supporting ring (22), the upper end surface of the supporting ring (22) is fixedly provided with a plurality of connecting rods (20), one side of the connecting rod (20) penetrates the hopper (8) and is fixedly provided with a supporting disc (19), the upper end surface of the supporting disc (19) is provided with an electric telescopic rod (3), and the electric telescopic rod (3) is fixedly connected with the cylinder body (1).

3. The method for producing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The outer wall of the cylinder body (1) is provided with an inlet pipe (101) and a discharge pipe (5), and the lower end surface of the cylinder body (1) is provided with a plurality of supporting legs (4).

4. The method for producing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The outer wall of the third cylinder (25) is symmetrically provided with a limiting rod (29), the limiting rod (29) and the outer wall of the third cylinder (25) are sleeved with a fixing seat (17), the lower end surface of the fixing seat (17) is fixedly installed on the inner wall of the cylinder body (1), and the outer wall of the fixing seat (17) is symmetrically provided with an opening (18).

5. The method for producing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The lower end surface of the first gear (14) is provided with a second circular rod (15), the outer wall of the second circular rod (15) is fixedly connected with the stirring rod (16), the side, away from the first gear (14), of the second circular rod (15) is rotatably connected with the cylinder body (1), and the hopper (8) is fixedly installed on the inner wall of the cylinder body (1).

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