Efficient and stable quartz sand purification equipment

Abstract

The utility model discloses efficient and stable quartz sand purification equipment, which relates to the technical field of quartz sand purification equipment and comprises a reaction furnace and a box fixedly connected to the top of the reaction furnace. The reacting furnace and the box body are both of a hollow structure, vertically-penetrating first channels are formed in the centers of the side walls, close to each other, of the reacting furnace and the box body, and a driving mechanism is arranged in the box body; according to the utility model, the stirring rod and the stirring blade at the bottom end are driven by the driving mechanism to stir quartz sand particles in the reaction furnace, so that the quartz sand positioned at the edge and at the position far away from the exhaust port flows, the contact between the quartz sand and HCL gas is more sufficient, the reaction efficiency is further improved, the reaction time is shortened, and the energy consumption is reduced; the temperature reaction probe is arranged, so that the temperature change in the reaction furnace can be monitored in real time, and meanwhile, the temperature control condition is determined according to the physical characteristics of the equipment during working, so that the purification process is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to quartz sand purification equipment technical field, concretely is a kind of quartz sand high-efficiency stable purification equipment. BACKGROUND

[0002] High-purity quartz sand is white powder, no color, impurity content is very low. It has high temperature resistance, excellent chemical properties, excellent electrical insulation and light transmission, etc., is the mineral raw material that high-tech industry cannot replace, the purification of quartz sand is mainly to remove a small amount or trace impurities, obtain high-purity quartz sand, impurities in quartz sand mainly come from quartzite ore itself and processing process, in the form of inclusion, element impurity, impurity mineral phase, usually through conventional physical, chemical beneficiation means, such as scrubbing, calcination, water quenching, grinding, screening, magnetic separation, gravity separation, flotation, acid leaching, high-temperature degassing, etc., most of the gangue minerals and gas-liquid inclusions in quartz raw materials can be dissociated or destroyed.

[0003] However, the removal of lattice impurities is extremely difficult, after acid leaching, it has reached the purification limit of the process, if excessively increasing the amount of acid, increasing temperature or prolonging time can only cause the overall corrosion of quartz minerals, reduce concentrate yield, and the impurity elements in the lattice cannot be purified, therefore, the impurities in the lattice often become the final bottleneck in the processing of high-purity quartz sand, at present, the methods for removing lattice impurities mainly include chlorination roasting process, chlorination roasting, also known as chlorination degassing, refers to the process that under certain conditions, under the action of chlorinating agent, some components in mineral raw materials are converted into gaseous or condensed state chlorides, so that the components are separated or enriched.

[0004] High-purity quartz sand chlorination purification process is to contact the material with hydrogen chloride gas in a high-temperature environment above 1000 degrees to remove the metal impurities contained therein, during which, the reaction rate of the accumulated quartz sand and gas is affected, not only increases the reaction time and thus increases the energy consumption, and the equipment is also damaged under high temperature for a long time.

[0005] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of quartz sand high-efficiency stable purification equipment to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model provides a kind of quartz sand high -efficient stable purification equipment, including reaction furnace and the box body being fixedly connected to the top of reaction furnace, reaction furnace top side is fixedly connected with support table, reaction furnace and box body are hollow structure and the center of the side wall of the two mutual closeness is all opened with vertical through channel one, the drive mechanism is equipped in the box body, drive mechanism includes the shaft one being coaxially arranged in channel one, the one end of shaft one is located inside reaction furnace and penetrates channel one, a plurality of high-temperature-resistant temperature sensing probes are equipped on the inner arc wall of reaction furnace, shaft one outer arc wall is successively sleeved with shaft three, sleeve one and sleeve two on the side away from box body along vertical direction, auxiliary stirring mechanism is equipped on the outer arc wall of sleeve one, and a plurality of stirring rods in annular array distribution are fixedly connected to the outer arc wall of sleeve one and sleeve two.

[0008] Further, the support table top is fixedly connected with a speed reducer, the output end of the speed reducer is fixedly connected with a transmission shaft, and the length direction of the transmission shaft is arranged towards the box body, the end of the transmission shaft away from the speed reducer penetrates the box body, the end of the transmission shaft away from the speed reducer is fixedly connected with a driving bevel gear, the upper and lower sides of the end of the driving bevel gear away from the transmission shaft are respectively meshingly connected with a bevel gear one and a bevel gear two, the bevel gear one and the bevel gear two are rotationally symmetrical about the axis of the driving bevel gear, and the bevel gear one and the bevel gear two are coaxially arranged with the channel one.

[0009] Further, the bevel gear one is fixedly connected to the outer arc wall of the shaft one on the side close to the top inner wall of the box body, the bevel gear two is fixedly connected to the top of the shaft three, the shaft one and the shaft three can rotate relative to each other, the sleeve one is sleeved on the outer arc wall of the shaft one and is clamped with the shaft three, the sleeve two is sleeved on the outer arc wall of the shaft one and is clamped with the shaft one, the bolt is fixedly connected to the center of the side wall of the shaft one away from the box body, the fixed cover is threadedly connected to the outside of the bolt, and the fixed cover abuts against the sleeve two.

[0010] Further, the auxiliary stirring mechanism is arranged on the top end of the outer arc wall of the sleeve one, a plurality of stirring rods in annular array distribution which are the same in structure are fixedly connected to the bottom end of the outer arc wall of the sleeve one and the middle part of the outer arc wall of the sleeve two, the radial lengths of the stirring rods mounted on the sleeve one and the stirring rods mounted on the sleeve two are different and staggered, a plurality of stirring blades in annular array distribution are fixedly connected to the outer arc wall of the fixed cover, the top of the stirring blade is beveled, and the stirring blade is tangent to the inner wall of the bottom of the reaction furnace.

[0011] Further, the sleeve shaft one outer arc wall is symmetrically provided with a connecting piece, the connecting piece is distributed along the radial direction of the sleeve shaft one, a horizontal rotating shaft two is rotationally connected to the side away from the sleeve shaft one of the connecting piece, a plurality of dispersion blades are equidistantly arranged on the outer arc wall of the rotating shaft two along the axial direction of the rotating shaft two, a driven gear is fixedly connected to the end of the rotating shaft two away from the connecting piece, the bottoms of the two driven gears are meshingly connected with the same annular gear disc, and the annular gear disc is fixedly connected to the inner arc wall of the reaction furnace and does not contact the stirring rod.

[0012] Further, a protective shell is fixedly connected to the inner side wall of the reaction furnace at the position corresponding to the auxiliary stirring mechanism, the protective shell has an annular structure, a horizontal through channel two is formed in the middle of the inner arc wall of the protective shell, and the rotating shaft two is slidingly connected in the channel two.

[0013] Further, the top of the reaction furnace is provided with an air inlet and a feeding port outside the box body, the air inlet and the feeding port are communicated with the inside of the reaction furnace, an electromagnetic valve is arranged in the air inlet, and a sealing piece matched with the feeding port is arranged in the feeding port.

[0014] Further, a discharging port is arranged at the center of the bottom of the reaction furnace, and an exhaust port is arranged at one side of the bottom of the reaction furnace, the exhaust port and the discharging port are communicated with the inside of the reaction furnace, electromagnetic valves are arranged in the exhaust port and the discharging port, and an intercepting filter screen is arranged at the opening of the exhaust port in the reaction furnace.

[0015] Compared with the prior art, the quartz sand efficient and stable purification equipment has the advantages that:

[0016] 1. The driving mechanism drives the stirring rod and the stirring blade at the bottom end to stir the quartz sand particles in the reaction furnace, so that the quartz sand located at the edge and far away from the exhaust port flows, the contact between the quartz sand and the HCL gas is more sufficient, the reaction efficiency is improved, the reaction time and the energy consumption are reduced, in addition, the temperature reaction probe is arranged, the temperature change in the reaction furnace can be monitored in real time, the temperature control condition is determined according to the physical characteristics during the equipment operation, and the purification process is more accurate.

[0017] 2. The auxiliary stirring mechanism can stir the quartz sand at the top end, and can also assist in dispersing the entering HCL gas, so that the HCL gas is diffused more uniformly, and the stirred quartz sand is also dispersed, and the contact area between the quartz sand and the HCL gas is further increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an internal structure sectional view of a quartz sand efficient and stable purification equipment.

[0019] Figure 2 It is a structure schematic view of a driving mechanism in a quartz sand efficient and stable purification equipment.

[0020] Figure 3 It is a whole structure schematic view of a quartz sand high-efficiency stable purification equipment.

[0021] In the figure:

[0022] 10, reaction furnace; 11, box body; 12, support table; 13, speed reducer motor; 14, air inlet; 15, feed inlet; 16, exhaust port; 17, transmission shaft;

[0023] 20, driving bevel gear; 21, bevel gear one; 22, bevel gear two; 23, first rotating shaft;

[0024] 30, first sleeve shaft; 31, second sleeve shaft; 32, fixed cover; 33, second rotating shaft; 34, driven gear; 35, annular toothed disc; 36, protective shell;

[0025] 40, stirring rod; 41, stirring blade. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-3 The present application provides a quartz sand high-efficiency stable purification equipment, which comprises a reaction furnace 10 and a box body 11 fixedly connected to the top of the reaction furnace 10. One side of the top of the reaction furnace 10 is fixedly connected with a support table 12. The reaction furnace 10 and the box body 11 are both hollow structures, and a vertical through channel one is formed in the center of the side wall of each of the reaction furnace 10 and the box body 11. A driving mechanism is arranged in the box body 11. The driving mechanism comprises a first rotating shaft 23 coaxially arranged in the channel one. One end of the first rotating shaft 23 penetrating through the channel one is located in the interior of the reaction furnace 10. A plurality of high-temperature-resistant temperature sensing probes are arranged on the inner arc wall of the reaction furnace 10. A third rotating shaft, a first sleeve shaft 30 and a second sleeve shaft 31 are sequentially and vertically sleeved on the outer arc wall of the first rotating shaft 23 away from the box body 11. An auxiliary stirring mechanism is arranged on the outer arc wall of the first sleeve shaft 30. A plurality of stirring rods 40 arranged in a ring array are fixedly connected to the outer arc walls of the first sleeve shaft 30 and the second sleeve shaft 31.

[0028] It should be noted that: since the high-purity quartz sand chlorination purification process is in contact with hydrogen chloride gas in a high-temperature environment above 1000 degrees, the equipment itself and the stirring equipment itself have high requirements for high-temperature resistance and corrosion resistance, in a possible embodiment, the material of the inner wall of the reaction furnace and the stirring mechanism can be one or several of silicon nitride ceramic, high-temperature alloy steel or composite material, and the sealing of the equipment connection adopts mechanical sealing technology, which is not described in detail here as prior art;

[0029] The proportional-integral-derivative control step automatic control device is adopted, the temperature controller displays the numerical value of the temperature setting sensor device, the temperature sensing probe transmits the detection value to the frequency converter controller, the PID function circuit of the frequency converter continuously compares the feedback temperature with the target temperature, and adjusts the output frequency and the rotating speed of the speed reducer 13 in real time according to the comparison result;

[0030] In the heating stage, when the temperature is lower than the first temperature threshold, the heating device starts to work and heats at a temperature rising rate of ten to fifteen degrees Celsius per minute until the temperature reaches the second threshold, in the holding stage, when the temperature reaches the second threshold, the heating device stops working until the temperature is lower than the third threshold, in the cooling stage, when the temperature is higher than the third threshold, the temperature control cooling rate is reduced at a cooling rate of ten to fifteen degrees Celsius per minute, so that the temperature slowly rises and falls, thereby preventing the equipment from being damaged due to uneven heating or sharp temperature change.

[0031] Please refer to Figures 1-3 The utility model provides a technical scheme: support platform 12 top fixedly connected with speed reducer 13, speed reducer 13 output fixedly connected with transmission shaft 17 and the length direction of transmission shaft 17 is towards the setting of box 11, transmission shaft 17 away from speed reducer 13 one end penetrates box 11, transmission shaft 17 away from speed reducer 13 one end fixedly connected with driving bevel gear 20, the upper and lower sides of driving bevel gear 20 away from transmission shaft 17 one end meshing connection have bevel gear one 21 with bevel gear two 22, bevel gear one 21 with bevel gear two 22 are connected with driving bevel gear 20 axial line of symmetry and both are with passageway one coaxial arrangement.

[0032] It should be noted that: driving driving bevel gear 20 drives bevel gear one 21 and bevel gear two 22 to rotate, so that bevel gear one 21 and bevel gear two 22 realize coaxial reverse rotation, further enhance the stirring effect, the box 11 is the material of good heat insulation, reduces the influence of high temperature transmission to speed reducer 13;

[0033] The reaction furnace 10 is a double-layer structure, and the heating assembly is arranged in the interlayer.

[0034] Please refer to Figures 1-3The utility model provides a kind of technical scheme: the bevel gear one 21 is fixedly connected on the outer arc wall of the one side of the inner wall of the top of box 11 close to rotating shaft one 23, bevel gear two 22 is fixedly connected on rotating shaft three top, rotating shaft one 23 and rotating shaft three can be mutually rotated, sleeve shaft one 30 is sleeved on the outer arc wall of rotating shaft one 23 and is mutually clamped with rotating shaft three, sleeve shaft two 31 is sleeved on the outer arc wall of rotating shaft one 23 and is mutually clamped with rotating shaft one 23, the side wall center of rotating shaft one 23 away from box 11 is fixedly connected with bolt, the outside of bolt is threadedly connected with fixed cover 32, and fixed cover 32 and sleeve shaft two 31 are mutually abutted.

[0035] It should be noted that: the one end of rotating shaft one 23 away from reaction furnace 10 is rotatably connected on the inner wall of the top of box 11, rotating shaft three is rotatably connected in channel one, and the connecting place of reaction furnace 10 and box 11 is provided with heat insulation layer, and the penetration of HCL gas and the transmission of high temperature are avoided by mechanical sealing mode, in a possible embodiment, cooling equipment can be added in box 11 to prevent the transmission of high temperature from affecting driving mechanism.

[0036] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: the outer arc wall top of sleeve shaft one 30 is equipped with auxiliary stirring mechanism, the outer arc wall bottom of sleeve shaft one 30 and the outer arc wall middle part of sleeve shaft two 31 are respectively fixedly connected with several identical, annular array distribution's stirring rod 40, wherein the radial length of stirring rod 40 installed on sleeve shaft one 30 and stirring rod 40 installed on sleeve shaft two 31 is different and is mutually staggered distribution, and a plurality of annular array distribution's stirring blade 41 are fixedly connected on the outer arc wall of fixed cover 32, the top of stirring blade 41 is inclined surface, and stirring blade 41 is tangent to the inner wall of the bottom of reaction furnace 10.

[0037] It should be noted that: taking sleeve shaft one 30 as an example, the horizontal part of stirring rod 40 is fixedly connected on the outer arc wall of sleeve shaft one 30, the vertical part of stirring rod 40 is away from sleeve shaft one 30, and the side of the horizontal part and the vertical part of stirring rod 40 is inclined surface with the rotation direction of sleeve shaft one 30, so that the inclined surface of stirring rod 40 can guide quartz sand during rotation, and the inclined surface of 42 top plays the propelling effect similar to screw rod, in a possible embodiment, helical stirring plate is installed on the outer arc wall of sleeve shaft one 30 and sleeve shaft two 31, so that quartz sand at bottom can be continuously transported to top during rotation, and stirring effect is strengthened.

[0038] During reaction, i.e. when not discharging, the discharge port is always tightly closed.

[0039] Please refer to Figures 1-3The utility model provides a kind of technical scheme: the connecting piece is symmetrically provided on the outer arc wall of sleeve shaft one 30, connecting piece is distributed along the radial direction of sleeve shaft one 30, horizontal shaft two 33 is rotatably connected to the side of connecting piece away from sleeve shaft one 30, several dispersion blades are equidistantly arranged on the outer arc wall of shaft two 33 along its axial direction, driven gear 34 is fixedly connected to the end of shaft two 33 away from connecting piece, the bottom of two driven gears 34 is engaged and connected with the same annular tooth disc 35, annular tooth disc 35 is fixedly connected on the inner arc wall of reaction furnace 10, and annular tooth disc 35 does not contact with stirring rod 40.

[0040] It should be noted that: connecting piece is fixedly connected on the outer arc wall of sleeve shaft one 30, sleeve shaft one 30 and sleeve shaft two 31 can also be integrally formed, when sleeve shaft one 30 rotates, connecting piece will drive shaft two 33 rotate along the axis of sleeve shaft one 30, and the meshing of driven gear 34 and annular tooth disc 35 drives shaft two 33 to rotate, the dispersion blades on the side wall of shaft two 33 can assist dispersion of quartz sand transported from the top, and also can disperse HCL gas entering from air inlet 14, so that it is evenly distributed in reaction furnace 10.

[0041] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: the position of the inside wall of reaction furnace 10 corresponding to auxiliary stirring mechanism is fixedly connected with protective shell 36, the protective shell 36 is annular structure, and the middle part of the inner arc wall of protective shell 36 is provided with horizontal through channel two, shaft two 33 is slidably connected in channel two, and driven gear 34 and annular tooth disc 35 are located in protective shell 36.

[0042] It should be noted that: protective shell 36 is used to prevent quartz sand from falling on annular tooth disc 35 to cause wear to gear teeth, or arc baffle is rotatably connected in channel two, arc baffle is located between two shaft two 33 and the ends of arc baffle are respectively abutted with two shaft two 33, so that shaft two 33 rotates around sleeve shaft one 30 and drives arc baffle to rotate, to continuously block channel two.

[0043] Please refer to Figures 1-3 The utility model provides a kind of technical scheme: air inlet 14 and feed inlet 15 are respectively arranged on the top of reaction furnace 10 outside box 11, air inlet 14 and feed inlet 15 are through with reaction furnace 10 inside, wherein solenoid valve is arranged in air inlet 14, and sealing element adapted thereto is arranged in feed inlet 15.

[0044] It should be noted that: air inlet 14 is used to introduce HCL gas, feed inlet 15 is used to put in quartz sand material, after feeding is completed, sealing element adapted to feed inlet 15 is used to seal feed inlet 15, to prevent gas from escaping.

[0045] Please refer toFigures 1-3 The utility model provides a technical scheme: the reaction furnace 10 bottom center is equipped with the discharge gate, and the reaction furnace 10 bottom one side is equipped with the exhaust port 16, and the exhaust port 16 and the discharge gate are through with the reaction furnace 10 inside respectively, and the exhaust port 16 and the discharge gate are equipped with solenoid valve in, and the opening place of exhaust port 16 in the reaction furnace 10 is equipped with the intercepting screen.

[0046] Need to explain is: the exhaust port 16 why sets up in below, is due to compared with HCL gas, the density of impurity gas after reaction is bigger, such as metal impurity Fe2O3, A l2O3 etc. in quartz sand and hydrogen chloride gas occur chemical reaction, generate corresponding chlorides FeC l3, A l C l3 etc., and their density is bigger compared with HCL,

[0047] Therefore impurity gas is easy to accumulate in below, and from below using collection equipment is easier to collect chlorides and drive internal airflow flow simultaneously, accelerate HCL gas and lower layer quartz sand reaction.

[0048] Working principle:

[0049] The quartz sand material of processing enters the reaction furnace 10 from the feed inlet 15, and the feed inlet 15 is sealed well, then the gas inlet 14 is connected to the gas inlet device, then the speed reducer motor 13 is started to stir the quartz sand, the heating assembly is started to heat the quartz sand, the temperature detection probe carries out real-time monitoring to the internal temperature, after the temperature meets the condition, the HCL gas is passed in, and the metal impurity in the quartz sand material is removed in the high temperature environment, after the reaction is finished, slowly cool down, and the purified quartz sand is discharged from the discharge gate.

Claims

1. A high-efficiency and stable purification device for quartz sand, comprising a reactor (10) and a box (11) fixedly connected to the top of the reactor (10), a support platform (12) fixedly connected to one side of the top of the reactor (10), both the reactor (10) and the box (11) being hollow structures, and a vertical through-passage being opened at the center of the side wall of each of them being close to each other, characterized in that: The box (11) is provided with a driving mechanism, the driving mechanism includes a rotating shaft one (23) coaxially arranged in the channel one, one end of the rotating shaft one (23) penetrating through the channel one is located inside the reaction furnace (10), a plurality of high-temperature-resistant temperature sensing probes are arranged on the inner arc wall of the reaction furnace (10), a rotating shaft three, a sleeve shaft one (30) and a sleeve shaft two (31) are sequentially sleeved on the outer arc wall of the rotating shaft one (23) away from the box (11) in the vertical direction, the sleeve shaft one (30) is provided with an auxiliary stirring mechanism on the outer arc wall, a plurality of stirring rods (40) arranged in a ring array are fixedly connected to the outer arc wall of the sleeve shaft one (30) and the sleeve shaft two (31).

2. The quartz sand high-efficiency stable purification device according to claim 1, characterized in that: The support table (12) is fixedly connected with a speed reducer (13) at the top, the output end of the speed reducer (13) is fixedly connected with a transmission shaft (17), and the length direction of the transmission shaft (17) is arranged towards the box (11), one end of the transmission shaft (17) away from the speed reducer (13) penetrates through the box (11), the transmission shaft (17) is fixedly connected with a driving bevel gear (20) at the end away from the speed reducer (13), the upper and lower sides of the end of the driving bevel gear (20) away from the transmission shaft (17) are respectively meshed with a bevel gear one (21) and a bevel gear two (22), the bevel gear one (21) and the bevel gear two (22) are rotationally symmetrical about the axis of the driving bevel gear (20) and are coaxially arranged with the channel one.

3. The quartz sand high-efficiency stable purification device according to claim 2, characterized in that: The bevel gear one (21) is fixedly connected to the outer arc wall of the rotating shaft one (23) on the side close to the top inner wall of the box (11), the bevel gear two (22) is fixedly connected to the top of the rotating shaft three, the rotating shaft one (23) and the rotating shaft three can rotate relative to each other, the sleeve shaft one (30) is sleeved on the outer arc wall of the rotating shaft one (23) and is clamped with the rotating shaft three, the sleeve shaft two (31) is sleeved on the outer arc wall of the rotating shaft one (23) and is clamped with the rotating shaft one (23), a bolt is fixedly connected to the center of the side wall of the rotating shaft one (23) away from the box (11), a fixed cover (32) is threadedly connected to the outside of the bolt, and the fixed cover (32) abuts against the sleeve shaft two (31).

4. The quartz sand high-efficiency stable purification device according to claim 3, characterized in that: The sleeve shaft one (30) is provided with an auxiliary stirring mechanism at the top end of the outer arc wall, a plurality of stirring rods (40) arranged in a ring array and having the same structure are fixedly connected to the bottom end of the outer arc wall of the sleeve shaft one (30) and the middle part of the outer arc wall of the sleeve shaft two (31), the radial lengths of the stirring rods (40) mounted on the sleeve shaft one (30) and the sleeve shaft two (31) are different and are staggered, a plurality of stirring blades (41) arranged in a ring array are fixedly connected to the outer arc wall of the fixed cover (32), the top of the stirring blade (41) is beveled, and the stirring blade (41) is tangent to the bottom inner wall of the reaction furnace (10).

5. The quartz sand high-efficiency stable purification device according to claim 3, characterized in that: The outer arc wall of the sleeve shaft one (30) is symmetrically provided with a connecting piece, the connecting piece is distributed along the radial direction of the sleeve shaft one (30), a horizontal rotating shaft two (33) is rotatably connected to the side of the connecting piece away from the sleeve shaft one (30), a plurality of dispersion blades are equidistantly arranged on the outer arc wall of the rotating shaft two (33) along the axial direction thereof, a driven gear (34) is fixedly connected to the end of the rotating shaft two (33) away from the connecting piece, the bottoms of the two driven gears (34) are meshingly connected with the same annular tooth disc (35), the annular tooth disc (35) is fixedly connected to the inner arc wall of the reaction furnace (10), and the annular tooth disc (35) is not in contact with the stirring rod (40).

6. The quartz sand high-efficiency stable purification device according to claim 5, characterized in that: The inner side wall of the reaction furnace (10) is fixedly connected with a protective shell (36) at the position corresponding to the auxiliary stirring mechanism, the protective shell (36) has an annular structure, a horizontal through channel two is formed in the middle of the inner arc wall of the protective shell (36), the rotating shaft two (33) is slidably connected in the channel two, and the driven gear (34) and the annular tooth disc (35) are located in the protective shell (36).

7. The quartz sand high-efficiency stable purification device according to claim 1, characterized in that: The top of the reaction furnace (10) is provided with an air inlet (14) and a feeding port (15) outside the box body (11), the air inlet (14) and the feeding port (15) are communicated with the inside of the reaction furnace (10), an electromagnetic valve is arranged in the air inlet (14), and a sealing piece matched with the feeding port (15) is arranged in the feeding port (15).

8. The quartz sand high-efficiency stable purification device according to claim 7, characterized in that: The bottom center of the reaction furnace (10) is provided with a discharge port, one side of the bottom of the reaction furnace (10) is provided with an exhaust port (16), the exhaust port (16) and the discharge port are communicated with the inside of the reaction furnace (10), electromagnetic valves are arranged in the exhaust port (16) and the discharge port, and an intercepting screen is arranged at the opening of the exhaust port (16) in the reaction furnace (10).

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