Production and processing method of high-quality photovoltaic quartz sand

Abstract

The invention belongs to the technical field of quartz sand production, and discloses a high-quality photovoltaic quartz sand production and processing method which comprises the following steps: step 1, rotating a first spiral blade to enable quartz sand heated in a hopper to descend into a second cylinder through a first cylinder; secondly, a driving mechanism drives an extraction assembly to extract the pickling solution in the barrel to rise into a second cylinder to make contact with quartz sand, the quartz sand can generate a thermal shock effect, and certain microcracks and pores are generated in the quartz sand; 3, a second cylinder rotates to throw out the quartz sand from a round pipe, meanwhile, a gear ring drives a fixing plate to rotate, the quartz sand can impact the fixing plate to be crushed, impurities are exposed outside, and a stirring rod stirs and mixes the quartz sand; and 4, the lifting assembly drives the extraction assembly to ascend, at the moment, the extraction assembly extracts the pickling solution and quartz sand mixed solution, then the pickling solution and quartz sand mixed solution is thrown out of the round pipe and impacts the fixing plate, and falling of impurities on the surface of quartz sand is accelerated. The problem that an existing device is low in purification efficiency is solved.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand production, and in particular to a production and processing method of high-quality photovoltaic quartz sand. Background Art

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

[0003] At present, the production of photovoltaic quartz sand mainly includes: raw material screening, physical sorting, chemical treatment, high temperature roasting, fine purification, drying, screening and packaging. Among them, the pickling step in the chemical treatment is the key link to further purify quartz sand and remove impurities. However, the existing quartz sand purification equipment faces some challenges in the pickling process.

[0004] The Chinese patent disclosed "A purification device for iron impurities in high-purity quartz sand" with application number 202310081825.X, including a cylinder, a funnel and a conduit connected to the cylinder, and a stirring mechanism provided on the cylinder. The stirring mechanism includes a rotating shaft and a stirring plate. A mixing mechanism for mixing quartz sand and pickling liquid is provided on one side of the stirring plate. The mixing mechanism includes a shell, a paddle and a discharge pipe. The stirring plate is provided with a notch, and the shell and the notch are connected to each other. The paddle is rotatably installed inside the shell, and the discharge pipe is fixedly connected to the upper end of the shell, and the discharge pipe and the shell are connected to each other.

[0005] The device can make quartz sand be pickled evenly, but because quartz sand is easily mixed with impurities, the device can only improve the purity of quartz sand by extending the pickling time, and cannot achieve a higher purification effect in a short time, which undoubtedly reduces production efficiency. In order 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 the present invention is to provide a production and processing method for high-quality photovoltaic quartz sand, which solves the problem of low purification efficiency of existing devices.

[0007] To achieve the above object, the present invention provides the following technical solution: a production and processing method of high-quality photovoltaic quartz sand, comprising the following steps: Step 1: The driving mechanism drives the first spiral blade to rotate, so that the quartz sand heated in the hopper passes through the first cylinder and falls into the second cylinder; Step 2: When the heated quartz sand falls into the second cylinder, the driving mechanism drives the pickling liquid in the extraction cylinder of the extraction component to rise into the second cylinder to contact the quartz sand. At this time, the quartz sand will undergo a thermal shock effect, causing certain microcracks and pores in the quartz sand; Step 3: When the quartz sand is thermally shocked, the driving mechanism drives the second cylinder to rotate so that the quartz sand is thrown out of the cylinder. At the same time, the gear ring drives the fixed plate to rotate. Since the fixed plate and the cylinder rotate in opposite directions, the quartz sand will hit the fixed plate and break, exposing the impurities. Then the sand will fall to the bottom of the cylinder, and the stirring rod will stir and mix it. 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 pickling liquid and quartz sand mixture into the second cylinder, and then throws it out from the round tube and hits the fixed plate, which can accelerate the falling of impurities on the surface of the quartz sand, thereby improving the pickling efficiency.

[0008] Preferably, the driving mechanism includes a servo motor, which is mounted on the lower end surface of the cylinder. The output shaft of the servo motor passes through the cylinder and is fixedly mounted with a first round rod, which is fixedly connected to the first spiral blade. A support frame is rotatably mounted on the upper end surface of the first round rod, and the outer wall of the support frame is mounted on the inner wall of the cylinder.

[0009] Preferably, the first cylinder is installed on the lower end surface of the hopper, the outer wall of the first cylinder is sleeved inside the second cylinder, the second gear is fixedly installed on the outer wall of the second cylinder, the first gear is symmetrically meshed with the first gear on both sides, the first gear is meshed with a gear ring on the side away from the second gear, and the gear ring is rotatably installed on the inner wall of the cylinder.

[0010] Preferably, the extraction component comprises a third cylinder, the outer wall of the third cylinder is provided with filter holes, the third cylinder is rotatably connected to the second cylinder, the inner wall of the third cylinder is abutted with a second spiral blade, and the second spiral blade is fixedly connected to the first round rod.

[0011] Preferably, a third round rod is sleeved and installed on the outer wall of the first round rod, and the third round rod is fixedly connected to the second cylinder at a side away from the first round rod.

[0012] Preferably, a support ring is rotatably mounted on the outer wall of the second cylinder, a plurality of connecting rods are fixedly mounted on the upper end surface of the support ring, a support plate is fixedly mounted on one side of the connecting rod passing through the hopper, an electric telescopic rod is mounted on the upper end surface of the support plate, and the electric telescopic rod is fixedly connected to the cylinder body.

[0013] Preferably, a liquid inlet pipe and a material outlet pipe are installed on the outer wall of the cylinder, and a plurality of supporting legs are installed on the lower end surface of the cylinder.

[0014] Preferably, the outer wall of the third cylinder is symmetrically provided with limit rods, the limit rods and the outer wall of the third cylinder are sleeved with a fixing seat, the lower end surface of the fixing seat is fixedly installed on the inner wall of the cylinder, and the outer wall of the fixing seat is symmetrically provided with openings.

[0015] Preferably, a second round rod is installed on the lower end surface of the first gear, the outer wall of the second round rod is fixedly connected to the stirring rod, the second round rod is rotatably connected to the cylinder at the side away from the first gear, and the hopper is fixedly installed on the inner wall of the cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a fixed plate and an extraction component. When the quartz sand is heated in the hopper and then falls to the second cylinder to contact the pickling liquid extracted by the second spiral blade below, certain microcracks and pores will be generated due to the thermal shock effect. At this time, the quartz sand is thrown out through the circular tube outside the third cylinder and collides with the fixed plate, which will cause the quartz sand to be completely broken, and the impurities are exposed to the outside, and then fall into the pickling liquid, thereby improving the efficiency of pickling purification.

[0017] Second, the present invention is provided with a lifting assembly. When a proper amount of quartz sand is added, the electric telescopic rod contracts, driving 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 of the outer wall of the fixed seat, and the second spiral blade extracts the mixed liquid of quartz sand and pickling liquid to rise, and then discharges it from the round tube. At this time, the impurity binding force of the soaked quartz sand decreases, and the impurities will fall, thereby improving the purification efficiency; After pickling is completed, the electric telescopic rod is extended to return the third cylinder to its initial position. At this time, the opening is closed and the pickling liquid is extracted from the filter hole by the second spiral blade. At this time, the pickling liquid flushes the interior to prevent quartz sand from remaining. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is another perspective schematic diagram of the present invention; Figure 3 It is a schematic diagram of the interior of the cylinder of the present invention; Figure 4 It is a cross-sectional view of the present invention; Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 for Figure 4 A magnified schematic diagram of point B in the middle.

[0019] In the figure: 1, cylinder; 101, liquid 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, limit rod. DETAILED DESCRIPTION

[0020] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figures 1 to 6 The present invention provides a technical solution: a production and processing method of high-quality photovoltaic quartz sand, comprising the following steps: Step 1: The driving mechanism drives the first spiral blade 10 to rotate, so that the heated quartz sand in the hopper 8 passes through the first cylinder 21 and falls into the second cylinder 23; Step 2: When the heated quartz sand falls into the second cylinder 23, the driving mechanism drives the pickling liquid in the extraction cylinder 1 to rise into the second cylinder 23 to contact the quartz sand. At this time, the quartz sand will have a thermal shock effect, causing certain microcracks and pores in the quartz sand; Step 3: When the quartz sand is thermally shocked, the driving mechanism drives the second cylinder 23 to rotate so that the quartz sand is thrown out of the round tube 12. At the same time, the gear 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 to complete the crushing, exposing the impurities to the outside, and then fall to the bottom of the cylinder 1. At this time, the stirring rod 16 stirs and mixes it; 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 pickling liquid and quartz sand mixture into the second cylinder 23, and then throws it out from the circular tube 12 and hits the fixed plate 11, which can accelerate the falling of impurities on the surface of the quartz sand.

[0022] Further, such as Figure 2 and Figure 3As shown, the driving mechanism includes a servo motor 6, which is mounted on the lower end surface of the cylinder 1, and the output shaft of the servo motor 6 passes through the cylinder 1 and is fixedly mounted with a first round rod 9, which is fixedly connected to the first spiral blade 10, and a support frame 7 is rotatably mounted on the upper end surface of the first round rod 9, and the outer wall of the support frame 7 is mounted on the inner wall of the cylinder 1, and a baffle 901 is symmetrically rotatably mounted on the inner wall of the first cylinder 21, and the side of the baffle 901 away from the first cylinder 21 abuts against the outer wall of the first round rod 9, and a torsion spring is installed at the rotation connection between the baffle 901 and the first cylinder 21, and a heating wire (not shown in the figure) is installed in the hopper 8; The baffle 901 can prevent the quartz sand in the hopper 8 from falling. When the heating is completed, the servo motor 6 rotates, driving the first round rod 9 to rotate, and 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 to achieve material unloading.

[0023] Further, such as Figure 3 As shown, the first cylinder 21 is installed on the lower end surface 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 mounted with a second gear 24, the second gear 24 is symmetrically meshed with the first gear 14 on both sides, the first gear 14 is meshed with a gear ring 13 on the side away from the second gear 24, and the gear ring 13 is rotatably mounted on the inner wall of the cylinder 1; When the second cylinder 23 rotates, it drives the second gear 24 to rotate, the second gear 24 drives the first gear 14 to rotate, and the first gear 14 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.

[0024] Further, 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 a filter hole 26, the third cylinder 25 is rotatably connected to the second cylinder 23, the inner wall of the third cylinder 25 is abutted with a second spiral blade 28, and the second spiral blade 28 is fixedly connected to the first round rod 9; When the first round rod 9 rotates, the second spiral blade 28 is driven to rotate. At this time, the pickling liquid enters the third cylinder 25 through the filter hole 26.

[0025] Further, such as Figure 5 As shown, a third round rod 27 is sleeved and installed on the outer wall of the first round rod 9, and the third round rod 27 is fixedly connected to the second cylinder 23 at a side away from the first round rod 9; When the first round rod 9 rotates, the second cylinder 23 is driven to rotate through the third round rod 27 .

[0026] Further, such as Figure 3As shown, a support ring 22 is rotatably mounted on the outer wall of the second cylinder 23, and a plurality of connecting rods 20 are fixedly mounted on the upper end surface of the support ring 22. A support plate 19 is fixedly mounted on one side of the connecting rod 20 passing through the hopper 8, and an electric telescopic rod 3 is mounted on the upper end surface of the support plate 19, and the electric telescopic rod 3 is fixedly connected to the cylinder 1; When the electric telescopic rod 3 is working, the supporting ring 22 is driven to move by the connecting rod 20 , and the supporting ring 22 drives the second cylinder 23 to move on the first cylinder 21 , and drives the third cylinder 25 to move on the fixing seat 17 at the same time.

[0027] Further, such as Figure 1 As shown, a liquid inlet pipe 101 and a material outlet pipe 5 are installed on the outer wall of the cylinder 1, and a plurality of supporting legs 4 are installed on the lower end surface of the cylinder 1; The liquid inlet pipe 101 is used to inject pickling liquid, and the discharge pipe 5 discharges the pickled quartz sand.

[0028] Further, such as Figure 6 As shown, the outer wall of the third cylinder 25 is symmetrically installed with a limit rod 29, and the limit rod 29 and the outer wall of the third cylinder 25 are sleeved with a fixing seat 17, and 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 opened with openings 18; The third cylinder 25 drives the limiting rod 29 to slide on the fixing seat 17 , and the limiting rod 29 prevents the third cylinder 25 from rotating.

[0029] Further, such as Figure 3 As shown, a second round rod 15 is installed on the lower end surface of the first gear 14, the outer wall of the second round rod 15 is fixedly connected to the stirring rod 16, the second round rod 15 is rotatably connected to the cylinder 1 on the side away from the first gear 14, and the hopper 8 is fixedly installed on the inner wall of the cylinder 1; The first gear 14 drives the stirring rod 16 to rotate through the second round rod 15 .

[0030] Further, such as Figure 4 As shown, the hollow portion of the first cylinder 21 is narrow at the top and wide at the bottom, and is circular at the portion corresponding to the first spiral blade 10 and is square at the portion corresponding to the baffle 901 .

[0031] Working principle: Step 1: First, inject an appropriate amount of pickling liquid into the cylinder 1 through the liquid inlet pipe 101, and then put quartz sand into the cylinder 1 through the discharge pipe 2, and the quartz sand is heated by the hopper 8.

[0032] 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, the quartz sand in the hopper 8 can pass through the first cylinder 21 and enter the second cylinder 23. At the same time, the second spiral blade 28 extracts 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 contacts the pickling liquid, generating thermal stress, and the quartz sand produces certain microcracks and pores.

[0033] Step 3: At this time, the third round rod 27 drives the second cylinder 23 to rotate, and the second cylinder 23 drives the circular tube 12 to rotate. At this time, the quartz sand with certain microcracks and pores is thrown out through the circular tube 12. At the same time, the second 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 circular tube 12 and the fixed plate 11 rotate in opposite directions. The quartz sand with certain microcracks and pores will be more easily broken, and then fall into the inside of the cylinder 1, increasing the contact area between the impurities and the pickling solution, thereby improving the pickling efficiency.

[0034] Step 4: When the first gear 14 rotates, it drives the second round rod 15 to rotate, and 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 them evenly mixed.

[0035] Step 5: When all the quartz sand in the hopper 8 falls down, the hopper 8 stops heating, the electric telescopic rod 3 contracts, and drives the support plate 19 to rise. The support plate 19 drives the connecting rod 20 to rise, and the connecting rod 20 drives the support ring 22 to rise. The support ring 22 drives the second cylinder 23 to rise, and the second cylinder 23 drives the third cylinder 25, the third round rod 27 and the second gear 24 to rise. The third round rod 27 slides on the first round 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 of the outer wall of the fixed seat 17, and the second spiral blade 28 will extract the mixed liquid of quartz sand and pickling solution to rise, and then discharge it from the round tube 12. At this time, the binding force of the mixed quartz sand impurities decreases, and the impurities will fall, thereby improving the pickling efficiency.

[0036] Step 6: When the pickling is completed, the electric telescopic rod 3 is extended to return the third cylinder 25 to the initial position. At this time, the opening 18 is closed, and the pickling liquid is extracted from the filter hole 26 by the second spiral blade 28. At this time, the pickling liquid flushes the interior to prevent quartz sand from remaining, and is finally discharged from the discharge pipe 5.

[0037] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A production and processing method for high-quality photovoltaic quartz sand, characterized in that: The following steps are involved: Step 1: The driving mechanism drives the first spiral blade (10) to rotate, so that the quartz sand heated in the hopper (8) passes through the first cylinder (21) and descends into the second cylinder (23); Step 2: When the heated quartz sand falls into the second cylinder (23), the driving mechanism drives the pickling liquid in the extraction cylinder (1) of the extraction component to rise into the second cylinder (23) to contact the quartz sand. At this time, the quartz sand will experience a thermal shock effect, causing certain microcracks and pores in the quartz sand; Step 3: When the quartz sand is thermally shocked, the driving mechanism drives the second cylinder (23) to rotate so that the quartz sand is thrown out of the circular tube (12). At the same time, the gear ring (13) drives the fixed plate (11) to rotate. Since the fixed plate (11) and the circular tube (12) rotate in opposite directions, the quartz sand will hit the fixed plate (11) to be crushed, exposing the impurities to the outside, and then fall to the bottom of the cylinder (1). At this time, the stirring rod (16) stirs and mixes it. 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 pickling liquid and quartz sand mixture into the second cylinder (23), and then throws it out from the circular tube (12) and hits the fixed plate (11), which can accelerate the falling of impurities on the surface of the quartz sand, thereby improving the pickling efficiency.

2. The method for producing and processing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The driving mechanism comprises a servo motor (6), the servo motor (6) being mounted on the lower end surface of the cylinder (1), the output shaft of the servo motor (6) passing through the cylinder (1) and being fixedly mounted with a first round rod (9), the first round rod (9) being fixedly connected to a first spiral blade (10), a support frame (7) being rotatably mounted on the upper end surface of the first round rod (9), the outer wall of the support frame (7) being mounted on the inner wall of the cylinder (1).

3. The method for producing and processing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The first cylinder (21) is mounted on the lower end surface of the hopper (8); the outer wall of the first cylinder (21) is sleeved inside the second cylinder (23); a second gear (24) is fixedly mounted on the outer wall of the second cylinder (23); the first gear (14) is symmetrically meshed with the second gear (24) on both sides; a gear ring (13) is meshed with the side of the first gear (14) away from the second gear (24); and the gear ring (13) is rotatably mounted on the inner wall of the cylinder body (1).

4. The method for producing and processing high-quality photovoltaic quartz sand according to claim 1, characterized in that: The extraction assembly comprises a third cylinder (25), the outer wall of the third cylinder (25) is provided with a filter hole (26), the third cylinder (25) is rotatably connected to the second cylinder (23), the inner wall of the third cylinder (25) is abutted with a second spiral blade (28), and the second spiral blade (28) is fixedly connected to the first round rod (9).

5. The method for producing and processing high-quality photovoltaic quartz sand according to claim 2, characterized in that: A third round rod (27) is sleeved and mounted on the outer wall of the first round rod (9), and the third round rod (27) is fixedly connected to the second cylinder (23) at a side away from the first round rod (9).

6. The method for producing and processing high-quality photovoltaic quartz sand according to claim 1, characterized in that: A support ring (22) is rotatably mounted on the outer wall of the second cylinder (23); a plurality of connecting rods (20) are fixedly mounted on the upper end surface of the support ring (22); one side of the connecting rod (20) passes through the hopper (8) and is fixedly mounted with a support plate (19); an electric telescopic rod (3) is mounted on the upper end surface of the support plate (19); and the electric telescopic rod (3) is fixedly connected to the cylinder body (1).

7. The method for producing and processing high-quality photovoltaic quartz sand according to claim 1, characterized in that: A liquid inlet pipe (101) and a material outlet pipe (5) are installed on the outer wall of the cylinder (1), and a plurality of supporting legs (4) are installed on the lower end surface of the cylinder (1).

8. The method for producing and processing high-quality photovoltaic quartz sand according to claim 4, characterized in that: The outer wall of the third cylinder (25) is symmetrically mounted with a limit rod (29); the limit 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 mounted on the inner wall of the cylinder body (1); and the outer wall of the fixing seat (17) is symmetrically provided with openings (18).

9. The method for producing and processing high-quality photovoltaic quartz sand according to claim 3, characterized in that: A second round rod (15) is mounted on the lower end surface 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 barrel (1); and the hopper (8) is fixedly mounted on the inner wall of the barrel (1).

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