Quartz sand purification device and method based on microwave temperature control

Abstract

The invention discloses a quartz sand purification device and method based on microwave temperature control, and particularly relates to the technical field of quartz sand purification, the quartz sand purification device comprises a base, a purification assembly, a purification pipeline, a flow guide assembly, a transmission assembly and an air supply assembly, the flow guide assembly comprises a flow guide part arranged in a preheating cylinder, and the flow guide part can reciprocate to push materials to enter a microwave cylinder; the air supply assembly is arranged in the microwave cylinder of the purification pipeline, the air supply assembly can blow air to the end, close to the flow guide part, of the microwave cylinder when the flow guide part reciprocates, material accumulation is prevented, and the air supply assembly can generate pulse type airflow through movement of the flow guide part to blow away quartz sand particles attached to the inner wall of the microwave cylinder; through reciprocating motion of the flow guide part, the weight of quartz sand particles entering the purification pipeline is controlled, and the problem that when the quartz sand particles are sufficient and insufficient, the flowing speeds of the quartz sand particles in the purification pipeline are inconsistent, and consequently the roasting time is inconsistent is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of quartz sand purification, and more particularly to a quartz sand purification device and method based on microwave temperature control. BACKGROUND

[0002] Quartz sand is a non-metallic mineral, which is a kind of silicate mineral with hardness, wear resistance and stable chemical properties. The main mineral component of quartz sand is silicon dioxide. The color of quartz sand is milky white or colorless and translucent. Quartz sand is often used as a mineral raw material in modern industry. In addition to quartz, quartz ore usually contains various impurity minerals, such as mica, feldspar, iron-titanium oxides, etc. Quartz itself often contains some metal or non-metal element impurities due to crystal structure defects or micro-cracks, as well as fluid impurities. Therefore, in order to meet the needs of different use scenarios, quartz sand needs to be purified.

[0003] A quartz sand purification device and method are disclosed in Chinese Patent No. 202311630820.4. The quartz sand purification device includes, for example: a main cavity with a microwave conversion assembly inside; a microwave output device connected to the main cavity; a quartz sand purification pipe that penetrates the main cavity, with both ends of the quartz sand purification pipe exposed on opposite sides of the main cavity; the microwave conversion assembly is sleeved on the quartz sand purification pipe; and a preheating device that extends into the quartz sand purification pipe to preheat the quartz sand purification pipe. The invention makes the quartz sand purification pipe quickly rise to a predetermined temperature by setting the preheating device that extends into the quartz sand purification pipe, thereby reducing the purification time of quartz sand materials and improving the purification efficiency. However, due to the gravity of quartz sand, it will accumulate at the bottom of the purification pipe. The wavelength of the microwave is short and the penetration is small, which leads to insufficient heating of the quartz in the upper layer, and the quartz sand particles at the bottom of the pipe are not fully heated, resulting in large fluctuations in impurity removal rate.

[0004] A quartz sand microwave purification device is disclosed in Chinese Patent No. 202411411621.9, which includes a support frame, a support plate, and a support pipe installed on the support plate through a fixing seat. It also includes a purification pipe, which is cylindrical on both sides and polygonal in the middle. It is coaxial with the support pipe and can uniformly heat the quartz sand in the purification pipe with the cooperation of the auxiliary mechanism and the purification pipe. The polygonal design of the middle part of the purification pipe makes the turning range of the quartz sand larger, avoiding the situation that the quartz sand at the bottom of the purification pipe does not turn to the right position and the heating effect is not good.

[0005] However, both of the aforementioned patents involve tilting the purification pipe to allow the quartz sand to fall under its own weight for discharge. At the same angle, the flow rate of quartz sand is inconsistent when there is sufficient material (in the early stage of roasting) and when there is insufficient material (in the late stage of roasting), resulting in inconsistent roasting times. Frequent adjustments to the pipe's tilt angle during the purification process can cause deviations in the residence time of quartz sand particles in the same batch inside the pipe, leading to unstable quality. Furthermore, when the purification pipe rotates the quartz sand particles, the particles may adhere to the inner wall of the purification pipe, causing uneven microwave dispersion or reflection, resulting in uneven heating of the quartz sand particles inside the pipe. Therefore, this invention proposes a quartz sand purification device and method based on microwave temperature control to solve the above problems. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a quartz sand purification device and method based on microwave temperature control to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a quartz sand purification device and method based on microwave temperature control, comprising: a base, a purification component, a purification pipe, a flow guiding component, a transmission component, and a gas supply component. The purification pipe is disposed inside the purification component and is divided into a preheating cylinder and a microwave cylinder. The flow guiding component includes a flow guiding element disposed inside the preheating cylinder, which can reciprocate to push the material into the microwave cylinder. The gas supply component is disposed inside the microwave cylinder of the purification pipe and can blow gas to the end of the microwave cylinder near the flow guiding element when the flow guiding element reciprocates, preventing material accumulation. The gas supply component can generate pulsed airflow through the movement of the flow guiding element to disperse the quartz sand particles attached to the inner wall of the microwave cylinder.

[0008] Preferably, the purification pipe is provided with a limiting component inside. When the flow guide comes into contact with the limiting component, it can prevent the quartz sand particles inside the preheating cylinder from entering the microwave cylinder. One end of the flow guide is fixedly connected to a first connector. The purification pipe is provided with a first air cylinder inside. The first connector is slidably connected to the inner wall of the first air cylinder.

[0009] Preferably, the gas delivery assembly includes a second gas cylinder disposed inside the purification pipeline, and the end of the guide member away from the first connector is fixedly connected to the second connector, and the second connector is slidably connected to the inner wall of the second gas cylinder.

[0010] Preferably, one end of the purification pipeline is rotatably connected with a feeding end cover, one end of the first air cylinder is fixedly connected with the feeding end cover, the two limiting members are symmetrically distributed along the central axis of the purification pipeline, the two limiting members are fixedly connected with the second air cylinder through the support rod, and the second air cylinder is provided with an air inlet hole and a spray hole at the end close to the limiting member.

[0011] Preferably, the heating pipe is fixedly connected to the end of the feeding end cover close to the first air cylinder, the end of the heating pipe away from the first air cylinder is fixedly connected with the limiting member, the feeding end cover is provided with a feeding port for connecting the feeding device, and the feeding end cover is provided with a first through hole in communication with the first air cylinder.

[0012] Preferably, the end of the purification pipeline away from the feeding end cover is rotatably connected with a discharging end cover, the end of the discharging end cover is fixedly connected with an air duct, the end of the air duct away from the discharging end cover is fixedly connected with the second air cylinder, the end of the second air cylinder is provided with a second through hole in communication with the air duct, the air duct is provided with a plurality of spray holes, the discharging end cover is provided with a discharging port for connecting the discharging device, and the discharging end cover is provided with an air inlet hole in communication with the air duct.

[0013] Preferably, the transmission assembly comprises a roller fixedly connected to one end of the purification assembly and a motor for driving the roller to rotate, both ends of the purification pipeline are fixedly connected with rotating wheels, the roller and the rotating wheels are engaged, one end of the purification assembly is fixedly connected with the motor for driving the roller to rotate, and the motor is in transmission connection with the roller.

[0014] Preferably, the bottom of the purification assembly is fixedly connected with a driving member, one end of the driving member is fixedly connected with a third air cylinder, and one end of the third air cylinder is provided with an air hole in communication with the first through hole.

[0015] Preferably, the inside of the purification assembly is fixedly connected with a microwave emitting device, the microwave emitting device is sleeved outside the purification pipeline and is rotatably connected with the purification pipeline, one end of the base is rotatably connected with the purification assembly through a rotating shaft, and the inside of the purification pipeline is provided with a blade.

[0016] The application also provides a use method of the quartz sand purification device based on microwave temperature control, which comprises the following steps: S1. starting the motor to make the purification pipeline rotate, heating the purification pipeline to a working temperature, and introducing gas into the air duct;

[0017] S2. The quartz sand particles enter the preheating cylinder of the purification pipeline through the feeding port for preheating.

[0018] S3. The driving member is started to drive the flow guide member to push the quartz sand particles into the microwave cylinder for purification.

[0019] S4. The reciprocating motion of the guide component creates a pulsed airflow inside the ventilation pipe, which blows the quartz sand particles inside the pipe to heat them evenly and allow them to react fully.

[0020] S5. Quartz sand particles are discharged through the discharge port.

[0021] The technical effects and advantages of this invention are as follows:

[0022] This invention utilizes the reciprocating motion of a guide vane to propel quartz sand particles into the microwave cylinder, controlling the weight of the quartz sand particles entering the purification pipe within the microwave cylinder. This ensures a consistent weight of quartz sand particles entering the microwave cylinder from the preheating cylinder, preventing inconsistent flow rates of quartz sand particles when there are sufficient or insufficient particles, which could lead to inconsistent calcination times. Furthermore, the reciprocating motion of the guide vane disperses quartz sand particles accumulated near the limiting component of the microwave cylinder through the nozzles of the second air cylinder, creating a pulsed airflow in the ventilation pipe. This disperses quartz sand particles adhering to the inner wall or blades of the purification pipe, promoting quartz sand flow while ensuring sufficient contact between the quartz sand particles and the purification gas for purification. This prevents quartz sand particles adhering to the inner wall of the pipe from affecting microwave dispersion or causing uneven reflection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the purification component structure of the present invention.

[0025] Figure 3 This is a cross-sectional view of the overall structure of the purification component of the present invention.

[0026] Figure 4 This is a schematic diagram of the overall structure of the microwave transmitting device of the present invention.

[0027] Figure 5 This is a cross-sectional view of the overall structure of the purification pipeline of the present invention.

[0028] Figure 6 For the present invention Figure 3 Enlarged view of the structure of part A.

[0029] Figure 7 For the present invention Figure 3 Enlarged view of the structure of part B.

[0030] The reference signs are: 1, base; 2, purification assembly; 21, purification pipeline; 22, feeding end cover; 23, discharging end cover; 24, driving part; 25, third air cylinder; 26, heating pipe; 27, microwave emitting device; 3, flow guide assembly; 31, flow guide part; 311, first air cylinder; 312, first connecting part; 313, second connecting part; 314, first through hole; 32, limiting part; 4, transmission assembly; 41, roller; 42, rotating wheel; 5, air feeding assembly; 51, second air cylinder; 52, air feeding pipeline; 53, second through hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described 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 of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0032] Embodiment 1

[0033] In actual production, because the quartz sand particles are discharged by gravity, the flow speed of the quartz sand particles is inconsistent when the quartz sand particles are sufficient (at the initial stage of roasting) and when the quartz sand particles are insufficient (at the final stage of roasting), thereby causing the roasting time to be inconsistent. To solve the above problem, the embodiment is invented.

[0034] Referring to Figures 1 to 7 The quartz sand purification device and method based on microwave temperature control according to an embodiment of the present application, as shown in the drawings, includes a base 1, a purification assembly 2, a purification pipeline 21, a flow guide assembly 3, a transmission assembly 4, and an air feeding assembly 5. The purification pipeline 21 is arranged inside the purification assembly 2, and the purification pipeline 21 is divided into a preheating cylinder and a microwave cylinder. The flow guide assembly 3 includes a flow guide part 31 arranged inside the preheating cylinder, and the flow guide part 31 can reciprocatingly move to push the material into the microwave cylinder. The air feeding assembly 5 is arranged inside the microwave cylinder of the purification pipeline 21, and the air feeding assembly 5 can blow air to the end of the microwave cylinder close to the flow guide part 31 when the flow guide part 31 reciprocatingly moves, to prevent the material from accumulating. The air feeding assembly 5 can generate pulsed air flow to blow away the quartz sand particles attached to the inner wall of the microwave cylinder through the movement of the flow guide part 31.

[0035] Referring to Figure 3 and Figure 5As shown, the interior of the purification pipeline 21 is provided with a limiting piece 32, when the flow guide piece 31 is in contact with the limiting piece 32, the quartz sand particles in the interior of the preheating cylinder can be prevented from entering the interior of the microwave cylinder, one end of the flow guide piece 31 is fixedly connected with a first connecting piece 312, the interior of the purification pipeline 21 is provided with a first air cylinder 311, the first connecting piece 312 and the inner wall of the first air cylinder 311 are in sliding connection, wherein the first connecting piece 312 is composed of a piston rod and a piston plate, one end of the piston rod is fixedly connected with the flow guide piece 31, the other end is fixedly connected with the piston plate, the piston plate can slide in the interior of the first air cylinder 311, which is prior art and will not be described here.

[0036] As shown in Figure 6 As shown, the gas feeding assembly 5 includes a second air cylinder 51 arranged in the interior of the purification pipeline 21, the end of the flow guide piece 31 away from the first connecting piece 312 is fixedly connected with a second connecting piece 313, the second connecting piece 313 and the inner wall of the second air cylinder 51 are in sliding connection, wherein the second connecting piece 313 is composed of a piston rod and a piston plate, one end of the piston rod is fixedly connected with the flow guide piece 31, the other end is fixedly connected with the piston plate, the piston plate slides in the interior of the second air cylinder 51, which is prior art and will not be described here.

[0037] As shown in Figure 4 and Figure 6 As shown, one end of the purification pipeline 21 is rotatably connected with a feeding end cover 22, one end of the first air cylinder 311 is fixedly connected with the feeding end cover 22, the limiting pieces 32 are symmetrically distributed along the central axis of the purification pipeline 21, the two limiting pieces 32 are fixedly connected with the second air cylinder 51 through a support rod, one end of the second air cylinder 51 close to the limiting piece 32 is provided with an air inlet hole and a spray hole, wherein the air inlet hole is provided with a one-way valve, the spray hole is a spray head capable of spraying gas to blow the quartz sand particles in the interior of the purification pipeline 21, which is prior art and will not be described here.

[0038] As shown in Figure 3 and Figure 7 As shown, the end of the feeding end cover 22 close to the first air cylinder 311 is fixedly connected with a heating pipe 26, the end of the heating pipe 26 away from the first air cylinder 311 is fixedly connected with the limiting piece 32, the feeding end cover 22 is provided with a feeding port for connecting a feeding device, the feeding end cover 22 is provided with a first through hole 314, the first through hole 314 is in communication with the first air cylinder 311, wherein the heating pipe 26 uses infrared heating or resistance heating to heat the purification pipeline 21, the feeding device is a hopper capable of being sealingly connected with the feeding port and feeding the quartz sand particles into the purification pipeline 21, which is prior art and will not be described here.

[0039] As shown in Figure 4 and Figure 5As shown, the end of the purification pipeline 21 away from the feed end cover 22 is rotatably connected with a discharge end cover 23, one end of the discharge end cover 23 is fixedly connected with an air passage pipeline 52, the end of the air passage pipeline 52 away from the discharge end cover 23 is fixedly connected with a second air cylinder 51, one end of the second air cylinder 51 is provided with a second through hole 53, the second through hole 53 is communicated with the air passage pipeline 52, a plurality of spray holes are arranged on the air passage pipeline 52, the spray holes are uniformly distributed along the central axis of the air passage pipeline 52, the discharge end cover 23 is provided with a discharge port for connecting a discharge device, the discharge end cover 23 is provided with an air inlet hole communicated with the air passage pipeline 52, wherein the discharge device is a cylinder capable of being sealingly connected with the discharge port and capable of collecting quartz sand particles in the purification pipeline 21, the air passage pipeline 52 is connected with a gas source, the gas source is a gas required for purification of quartz sand particles, such as chlorine gas, hydrogen chloride gas or oxygen capable of causing a reduction reaction of impurities in the quartz sand particles, when chlorine gas or hydrogen chloride gas is used, the discharge port and the feed port should be sealed and a gas collection device should be arranged to prevent leakage of toxic gas, which is prior art and will not be described here.

[0040] As shown in Figure 1 and Figure 2 As shown, the transmission assembly 4 includes a roller 41 fixedly connected to one end of the purification assembly 2 and a motor for driving the roller 41 to rotate, both ends of the purification pipeline 21 are fixedly connected with rotating wheels 42, the roller 41 and the rotating wheels 42 are engaged, one end of the purification assembly 2 is fixedly connected with a motor for driving the roller 41 to rotate, the motor is in transmission connection with the roller 41, wherein each rotating wheel 42 is engaged with two rollers 41, the motor and the roller 41 are connected through gear transmission or belt transmission, which is prior art and will not be described here.

[0041] As shown in Figure 2 and Figure 3 As shown, the bottom of the purification assembly 2 is fixedly connected with a driving member 24, one end of the driving member 24 is fixedly connected with a third air cylinder 25, one end of the third air cylinder 25 is provided with an air hole communicated with the first through hole 314, wherein the driving member 24 is a hydraulic cylinder, one end of the driving member 24 is connected with a piston rod, one end of the piston rod is connected with a piston plate, the piston plate slides in the third air cylinder 25, which is prior art and will not be described here.

[0042] As shown in Figure 3 and Figure 4As shown, the inside of the purification assembly 2 is fixedly connected with a microwave emitting device 27, the microwave emitting device 27 is sleeved outside the purification pipeline 21 and is rotationally connected with the purification pipeline 21, one end of the base 1 is rotationally connected with the purification assembly 2 through a rotating shaft, and the inside of the purification pipeline 21 is provided with a blade. The purification assembly 2 is connected with a controller for controlling the start and stop of the motor, the heating of the microwave emitting device 27 and the heating tube 26, and the stroke of the driving member 24. The purification assembly 2 can be tilted by rotation, and the tilt angle is 5°-15°. This is the prior art, and will not be described in detail here.

[0043] In use, first, the purification assembly 2 is adjusted to a tilt angle that meets the working requirements, the motor is started to drive the purification pipeline 21 to rotate, the microwave emitting device 27 and the heating tube 26 are used to heat the purification pipeline 21, the quartz sand particles are sent into the inside of the preheating cylinder of the purification pipeline 21 through the feeding device, and the gas is introduced into the inside of the purification pipeline 21 through the air pipeline 52. Then, the driving member 24 is started to make the piston plate of the driving member 24 slide in the third cylinder 25, so that the negative pressure is generated in the inside of the first cylinder 311, the gas enters the inside of the third cylinder 25 through the first through hole 314 and the air hole, so that the first connecting piece 312 drives the flow guide member 31 to move towards the feeding end cover 22, the quartz sand particles are pushed to enter the inside of the microwave cylinder for purification, the reciprocating motion of the piston plate in the driving member 24 is controlled, so that the flow guide member 31 reciprocates, when the flow guide member 31 moves towards the limiting piece 32 and contacts the limiting piece 32, the flow guide member 31 impacts the limiting piece 32 to make the purification pipeline 21 vibrate, so as to promote the flow of the quartz sand particles in the pipeline, prevent the quartz sand from being accumulated at the end of the microwave cylinder close to the flow guide member 31, and adjust the stroke of the driving member 24 and the speed of the reciprocating motion according to the weight of the quartz sand particles, so as to control the speed of the reciprocating motion of the flow guide member 31. When the quartz sand particles are sufficient, the driving member 24 reduces the speed of the reciprocating motion to limit the quartz sand particles into the inside of the microwave cylinder. When the quartz sand particles are insufficient, the driving member 24 increases the speed of the reciprocating motion, so that the flow guide member 31 pushes the quartz sand particles into the inside of the microwave cylinder, so as to ensure that the weight of the quartz sand particles entering the inside of the microwave cylinder from the preheating cylinder is consistent, prevent the flow speed of the quartz sand particles in the purification pipeline 21 from being inconsistent when the quartz sand particles are sufficient and insufficient, and thus prevent the problem of inconsistent roasting time.

[0044] Example 2

[0045] In actual use, it is found that the quartz sand is accumulated at the end of the microwave cylinder close to the limiting piece 32 when passing through the purification pipeline 21, and is attached to the inner wall of the purification pipeline 21 when flowing, which causes uneven microwave emission or reflection, leads to uneven heating of the quartz sand, and thus affects the purification effect. On the basis of the above examples, further improvement is made.

[0046] In use, when the flow guide 31 moves towards the limiting piece 32, the gas in the purification pipe 21 enters the second cylinder 51, when the flow guide 31 moves towards the feed end cover 22, the second connecting piece 313 slides in the second cylinder 51, so that the gas in the second cylinder 51 is sprayed through the spray hole, blowing away the quartz sand particles accumulated at the end of the microwave cylinder close to the limiting piece 32, so as to prevent the quartz sand from accumulating at the end of the microwave cylinder close to the limiting piece 32 when passing through the purification pipe 21, and when the second connecting piece 313 moves in the second cylinder 51 towards the limiting piece 32, the gas in the air pipe 52 enters the second cylinder 51 through the second through hole 53, and when the second connecting piece 313 moves in the second cylinder 51 away from the limiting piece 32, the gas reenters the air pipe 52 through the second through hole 53, so that a pulse air flow is formed at the spray hole of the air pipe 52, blowing off the quartz sand particles attached to the inner wall of the purification pipe 21 or the blades, promoting the flow of the quartz sand while making the quartz sand particles fully contact with the purification gas for purification.

[0047] Embodiment 3

[0048] Based on the above embodiment, the embodiment also provides a use method of the quartz sand purification device based on microwave temperature control, including the following specific steps: S1. Start the motor to rotate the purification pipe 21, heat the purification pipe 21 to the working temperature, and introduce gas into the air pipe 52;

[0049] S2. The quartz sand particles enter the preheating cylinder of the purification pipe 21 through the feed port for preheating;

[0050] S3. Start the driving piece 24 to drive the flow guide 31 to push the quartz sand particles into the microwave cylinder for purification;

[0051] S4. The reciprocating motion of the flow guide 31 forms a pulse air flow in the air pipe 52 to blow the quartz sand particles in the pipe to make them uniformly heated and fully reacted;

[0052] S5. The quartz sand particles are discharged through the discharge port.

[0053] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A quartz sand purification device based on microwave temperature control, comprising a base, a purification assembly and a transmission assembly, characterized in that, Also include: The purification pipeline is provided inside the purification assembly, and the purification pipeline is divided into a preheating cylinder and a microwave cylinder; The flow guide assembly includes a flow guide provided inside the preheating cylinder, and the flow guide can reciprocatingly move the material into the microwave cylinder; The gas feeding assembly is provided inside the microwave cylinder of the purification pipeline, and the gas feeding assembly can blow gas to the end of the microwave cylinder close to the flow guide when the flow guide reciprocates, preventing the material from accumulating, and the gas feeding assembly can generate a pulse gas flow to blow away the quartz sand particles attached to the inner wall of the microwave cylinder through the movement of the flow guide.

2. The microwave temperature-based quartz sand purification apparatus of claim 1, wherein: The inside of the purification pipeline is provided with a limiting piece, which can prevent the quartz sand particles inside the preheating cylinder from entering the inside of the microwave cylinder when the flow guide contacts the limiting piece. One end of the flow guide is fixedly connected with a first connecting piece, and the inside of the purification pipeline is provided with a first air cylinder. The first connecting piece is in sliding connection with the inner wall of the first air cylinder.

3. The microwave temperature controlled based quartz sand purification apparatus of claim 2, wherein: The gas feeding assembly includes a second air cylinder provided inside the purification pipeline, and the end of the flow guide away from the first connecting piece is fixedly connected with a second connecting piece. The second connecting piece is in sliding connection with the inner wall of the second air cylinder.

4. The microwave temperature-based quartz sand purification apparatus of claim 3, wherein: One end of the purification pipeline is rotatably connected with a feeding end cover, one end of the first air cylinder is fixedly connected with the feeding end cover, the limiting piece is symmetrically distributed along the central axis of the purification pipeline, and the two limiting pieces are fixedly connected with the second air cylinder through a support rod. The end of the second air cylinder close to the limiting piece is provided with an air inlet hole and a jet hole.

5. The microwave temperature-based quartz sand purification apparatus of claim 4, wherein: The end of the feeding end cover close to the first air cylinder is fixedly connected with a heating pipe, and the end of the heating pipe away from the first air cylinder is fixedly connected with the limiting piece. An inlet is formed in the feeding end cover for connecting a feeding device. A first through hole is formed in the feeding end cover, and the first through hole is in communication with the first air cylinder.

6. The microwave temperature-based quartz sand purification apparatus of claim 5, wherein: The end of the purification pipeline away from the feeding end cover is rotatably connected with a discharging end cover, one end of the discharging end cover is fixedly connected with an air duct, and the end of the air duct away from the discharging end cover is fixedly connected with the second air cylinder. An second through hole is formed in one end of the second air cylinder, and the second through hole is in communication with the air duct. A plurality of jet holes are formed in the air duct. A discharging port is formed in the discharging end cover for connecting a discharging device. An air inlet hole is formed in the discharging end cover for connecting the air duct.

7. The microwave temperature controlled based quartz sand purification apparatus of claim 6, wherein: The transmission assembly includes a roller fixedly connected to one end of the purification assembly and a motor for driving the roller to rotate. The two ends of the purification pipeline are respectively fixedly connected with rotating wheels. The roller and the rotating wheels are in engagement. One end of the purification assembly is fixedly connected with a motor for driving the roller to rotate. The motor is in transmission connection with the roller.

8. The microwave temperature-based quartz sand purification apparatus of claim 7, wherein: The bottom of the purification assembly is fixedly connected with a driving piece, one end of the driving piece is fixedly connected with a third air cylinder, and one end of the third air cylinder is provided with an air hole in communication with the first through hole.

9. The microwave temperature-based quartz sand purification apparatus of claim 8, wherein: The inside of the purification assembly is fixedly connected with a microwave emitting device, the microwave emitting device is sleeved outside the purification pipeline and is in rotary connection with the purification pipeline, one end of the base is rotatably connected with the purification assembly through a rotating shaft, and the inside of the purification pipeline is provided with a blade.

10. A method for using a microwave temperature-controlled quartz sand purification device according to claim 9, characterized in that, The method comprises the following steps: S1. Start the motor to rotate the purification pipeline, and heat the purification pipeline to the working temperature, and introduce gas into the inside of the ventilation pipeline; S2. The quartz sand particles enter the preheating cylinder of the purification pipeline through the feeding port for preheating; S3. Start the driving member to drive the flow guide member to push the quartz sand particles into the microwave cylinder for purification; S4. The reciprocating motion of the flow guide member forms a pulse air flow in the inside of the ventilation pipeline to blow the quartz sand particles in the inside of the pipeline to uniformly heat and fully react; S5. The quartz sand particles are discharged through the discharge port.

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