Calcination device for producing high-purity quartz sand

Abstract

The invention provides a calcining device for producing high-purity quartz sand, and relates to the technical field of quartz sand calcining, the calcining device comprises a device bottom plate, a rotary heating furnace and a high-frequency heating furnace, the upper end of the device bottom plate is fixedly provided with a first furnace tube support frame and a second furnace tube support frame; furnace tube fixing frames are arranged at the inner ends of the first furnace tube supporting frame and the second furnace tube supporting frame correspondingly, the rotary heating furnaces are fixedly installed on the first furnace tube supporting frame and the second furnace tube supporting frame through the furnace tube fixing frames correspondingly, and the high-frequency heating furnace is fixedly installed on the surface of the upper end of the device bottom plate. Quartz sand is put into the rotary heating furnace to be heated, the structure at the front end of the rotary heating furnace can isolate internal high temperature leaking from the joint, the high-frequency heating furnace is used for heating the component, then the component is used for heating the quartz sand, and after heating, blanking is conducted through the other end of the rotary heating furnace. And water quenching is carried out through the water quenching tank, so that the processing effect of the quartz sand is better.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand calcining, in particular to a calcining device for producing high-purity quartz sand. Background Art

[0002] The rotary kiln is a thermal equipment for calcining, roasting or drying granular and powdered materials. As a conventional kiln type, the rotary kiln has existed for hundreds of years, but they are all large or super large, and are mainly used for primary rough processing of powder or mineral materials, such as the burning and calcination of cement clinker; the preparation of titanium dioxide from kaolin, and the processing of the rare earth industry. Although the output is large, there are disadvantages such as large temperature difference, low temperature control accuracy, and inability to seal and achieve precise atmosphere control. When the quartz sand raw material is fed, since there are always seams at the joints of the rotary kiln pipe, the strong high temperature affects the fed material and is also dangerous to the staff who feed the material. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a calcining device for producing high-purity quartz sand, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a calcining device for producing high-purity quartz sand, comprising a device bottom plate, a rotary heating furnace and a high-frequency heating furnace, a first furnace tube support frame and a second furnace tube support frame are fixedly installed on the upper end of the device bottom plate, the first furnace tube support frame and the second furnace tube support frame are respectively provided with furnace tube fixing frames at their inner ends, the rotary heating furnace is respectively fixedly installed on the first furnace tube support frame and the second furnace tube support frame through the furnace tube fixing frames, and the high-frequency heating furnace is fixedly installed on the upper end surface of the device bottom plate; The bottom plate support feet are arranged at the four corners of the lower end of the device bottom plate, and a water quenching tank is fixedly installed on the upper surface of the device bottom plate and at the front end of the first furnace tube support frame.

[0005] Preferably, a rotating support frame is fixedly mounted on the upper surface of the bottom plate of the device and located at the front end of the second furnace tube support frame, and a transmission mounting plate is fixedly mounted on the upper end of the rotating support frame.

[0006] Preferably, a motor base plate is fixedly mounted on the upper surface of the transmission mounting plate, a drive motor is integrated with the upper end of the motor base plate, a transmission back plate is arranged at the front end of the drive motor, two transmission turntables are rotatably mounted at the front end of the transmission back plate, and transmission belts are arranged on the transmission sleeves of the two transmission turntables.

[0007] Preferably, one of the transmission turntables is coaxially fixedly connected to the output shaft of the driving motor, and the rear end of the rotating shaft of the other transmission turntable is connected to a reduction gear box, a reduction gear box bottom plate is provided at the lower end of the reduction gear box, and the reduction gear box bottom plate is fixedly mounted on a transmission mounting plate, a side output end of the reduction gear box is connected to a driving gear mounting shaft, and a driving gear is coaxially fixedly mounted on the front end of the driving gear mounting shaft.

[0008] Preferably, the rotary heating furnace comprises: a feed fixed drum, a feed hopper, a heating furnace tube, a rotating gear plate fixing ring, a rotating gear plate, a discharge fixed drum, a discharge pipe, a discharge pipe head, a cleaning cover plug, a limit fixing ring, and a furnace tube cover; A furnace tube cover is integrally provided on the side of the feed fixed drum, a heating furnace tube is rotatably provided in the furnace tube cover, a rotating gear plate fixing ring is integrally provided on the side of the heating furnace tube, a rotating gear plate is fixedly installed on one side surface of the rotating gear plate fixing ring, a limited position fixing ring is integrally provided on the outer side of the other end of the heating furnace tube, and the limited position fixing ring is rotatably provided on the discharge fixed drum; The upper end of the fixed feed drum is integrally provided with a feed hopper, the inner wall of the heating furnace tube is provided with a pusher auger, and the rotating gear plate is meshed and connected with the driving gear; A discharge pipe is integrally arranged on the outer side of the discharge fixed drum, a discharge pipe head is integrally arranged on the lower end of the discharge pipe, and a cleaning cover plug is arranged on the outer end of the discharge pipe.

[0009] Preferably, a feed guide pipe is provided at the lower end of the feed hopper and located inside the feed fixed drum, a sealing fixing ring is integrated on the outer surface of the furnace tube cover tube, a bolt locking washer is provided on the side of the sealing fixing ring, and a sealing cover ring is provided on the side of the bolt locking washer.

[0010] Preferably, a sealing oil chamber is provided in the sealing cover ring, and a plurality of second locking bolts are provided between the bolt locking washer and the sealing cover ring; The outer cover of the sealing cover ring is provided with a heat-insulating sealing cover, and a plurality of first locking bolts are arranged between the bolt locking washer and the heat-insulating sealing cover, and each of the first locking bolts is partially sleeved with a rubber bolt sleeve.

[0011] Preferably, the high-frequency heating furnace comprises: a heating furnace bottom shell, a reversible furnace cover, a furnace tube upper cover, a furnace tube lower seat, a furnace cover reversing handle, a fixed buckle ear, a furnace cover rubber pad seat, a furnace cover rubber pad, a heat collecting groove, a high-frequency heating copper ring, and a furnace cover reversing hinge; The rear side of the heating furnace bottom shell is provided with a furnace cover flip hinge, the heating furnace bottom shell is provided with a flip furnace cover by rotating the furnace cover flip hinge, the upper end surface of the heating furnace bottom shell is provided with a furnace pipe lower seat, the lower end surface of the flip furnace cover is provided with a furnace pipe upper cover, and the front end of the flip furnace cover is provided with a furnace cover flip handle; The bottom shell of the heating furnace and the front end of the flip furnace cover are fixedly installed with two furnace cover rubber pad seats, the inner side of each furnace cover rubber pad seat is fixedly installed with a furnace cover rubber pad, and the front end of the flip furnace cover is fixedly installed with a fixed buckle ear; The furnace tube upper cover and the furnace tube lower seat are both provided with heat collecting grooves, and the inner side of each furnace tube upper cover and the furnace tube lower seat is provided with a high-frequency heating copper ring.

[0012] Preferably, damping cylinder mounting seats are provided on both sides of the heating furnace bottom shell and the flip furnace cover, and damping cylinders are provided on the two damping cylinder mounting seats on the same side.

[0013] Preferably, a buckle cover swivel seat is provided at the front end of the bottom shell of the heating furnace, a buckle cover middle leaf is rotatably mounted on the buckle cover swivel seat, and a locking buckle cover is rotatably mounted on the outer end of the buckle cover middle leaf.

[0014] The present invention provides a calcining device for producing high-purity quartz sand. It has the following beneficial effects: (1) The present invention heats quartz sand by placing it into a rotary heating furnace. The structure at the front end of the rotary heating furnace can isolate the high temperature leaking from the joints. The high-frequency heating furnace heats the components, and then the components heat the quartz sand. After heating, the quartz sand is unloaded from the other end of the rotary heating furnace and quenched in a water quenching tank, thereby achieving a better processing effect of the quartz sand. (2) The present invention starts the driving motor to drive one of the transmission turntables, and then drives the other transmission turntable to rotate through the transmission belt, and then reduces speed and turns through the reduction box, and then rotates through the driving gear, so as to provide the power for rotation; (3) The present invention drives the rotating gear plate on one side of the rotating heating furnace to rotate, thereby driving the heating furnace tube to rotate, and the quartz sand inside can be pushed to move slowly through the pushing auger on the inner wall of the heating furnace tube; The quartz sand raw material is added into the feed fixed drum through the feed hopper, and then guided into the interior of the heating furnace tube through the feed guide pipe. After being heated inside, it is discharged into the discharge pipe at the other end of the heating furnace tube, and then falls into the water quenching tank through the discharge pipe head; (4) The present invention flips the furnace cover to make the furnace cover rubber pad of the furnace cover rubber pad seat at the front end contact with the furnace cover rubber pad of the furnace cover rubber pad seat at the front end of the lower heating furnace bottom shell, then flips the locking buckle cover to buckle it on the fixed buckle ear at the upper end, locks the flip furnace cover, and then starts the high-frequency heating copper ring to heat the furnace tube, wherein the damping cylinder mounting seat can be supported by the damping cylinder through rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle; Figure 3 It is a structural schematic diagram of another viewing angle in the present invention; Figure 4 It is a structural schematic diagram of the rotary heating furnace in the present invention; Figure 5 It is a side view structural schematic diagram of the rotary heating furnace in the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure along line aa; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at B in the middle; Figure 8 It is a structural schematic diagram of the high frequency heating furnace of the present invention; Fig. 9 It is a side view structural schematic diagram of the high frequency heating furnace of the present invention; Fig.10 For the present invention Fig. 9 Schematic diagram of the cross-sectional structure of the bb line.

[0016] Among them, 1. device bottom plate; 2. first furnace tube support frame; 3. rotary heating furnace; 301. feed fixed drum; 302. feed hopper; 303. heating furnace tube; 304. rotating gear plate fixed ring; 305. rotating gear plate; 306. discharge fixed drum; 307. discharge pipe; 308. discharge pipe head; 309. heat insulation sealing cover; 310. cleaning cover plug; 311. feed guide pipe; 312. pusher auger; 313. limit fixing ring; 314. sealing fixing ring; 315. bolt locking washer; 316. sealing cover ring; 317. furnace tube cover; 318. sealing oil chamber; 319. rubber bolt sleeve; 320. first locking bolt; 321. second locking bolt; 4. second furnace tube support frame; 5. high frequency heating furnace; 501. heating furnace bottom Shell; 502, flip furnace cover; 503, furnace tube upper cover; 504, furnace tube lower seat; 505, furnace cover flip handle; 506, damping cylinder mounting seat; 507, damping cylinder; 508, fixed buckle ear; 509, furnace cover rubber pad seat; 510, furnace cover rubber pad; 511, heat collecting groove; 512, high-frequency heating copper ring; 513, furnace cover flip hinge; 514, buckle cover rotating seat; 515, buckle cover middle leaf; 516, lock buckle cover; 6, water quenching tank; 7, bottom plate support foot; 8, rotating support frame; 9, transmission mounting plate; 10, motor bottom plate; 11, driving motor; 12, transmission back plate; 13, transmission turntable; 14, transmission belt; 15, reduction box; 16, driving gear mounting shaft; 17, driving gear; 18, reduction box bottom plate; 19, furnace tube fixing frame. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 3 As shown, an embodiment of the present invention provides a calcining device for producing high-purity quartz sand, including a device bottom plate 1, a rotary heating furnace 3 and a high-frequency heating furnace 5, wherein a first furnace tube support frame 2 and a second furnace tube support frame 4 are fixedly installed on the upper end of the device bottom plate 1, and furnace tube fixing frames 19 are respectively provided at the inner ends of the first furnace tube support frame 2 and the second furnace tube support frame 4, and the rotary heating furnace 3 is fixedly installed on the first furnace tube support frame 2 and the second furnace tube support frame 4 through the furnace tube fixing frames 19, respectively, and the high-frequency heating furnace 5 is fixedly installed on the upper end surface of the device bottom plate 1; bottom plate supporting feet 7 are provided at the four corners of the lower end of the device bottom plate 1, a water quenching tank 6 is fixedly installed on the upper end surface of the device bottom plate 1 and at the front end of the first furnace tube support frame 2, a rotating support frame 8 is fixedly installed on the upper end surface of the device bottom plate 1 and at the front end of the second furnace tube support frame 4, and a transmission mounting plate 9 is fixedly installed on the upper end of the rotating support frame 8.

[0019] like Figure 1 , Figures 4 to 7As shown, the rotary heating furnace 3 includes: a feed fixed drum 301, a feed hopper 302, a heating furnace tube 303, a rotating gear plate fixing ring 304, a rotating gear plate 305, a discharge fixed drum 306, a discharge pipe 307, a discharge pipe head 308, a cleaning cover plug 310, a limit fixing ring 313, and a furnace tube cover cylinder 317; the side of the feed fixed drum 301 is integrally provided with a furnace tube cover cylinder 317, and the heating furnace tube 303 is rotatably arranged in the furnace tube cover cylinder 317, and the heating furnace tube 303 is rotatably arranged in the furnace tube cover cylinder 317. 03 is integrated with a rotating toothed disc fixing ring 304 on the side, and a rotating toothed disc 305 is fixedly installed on one side of the rotating toothed disc fixing ring 304. A limited position fixing ring 313 is integrated with the outer side of the other end of the heating furnace tube 303, and the limited position fixing ring 313 is rotatably arranged on the discharge fixed drum 306; a feed hopper 302 is integrated with the upper end of the feed fixed drum 301, and a pusher auger 312 is arranged on the inner wall of the heating furnace tube 303. The rotating toothed disc 305 is connected to the driving gear 17 meshing connection; the outer side of the discharge fixed drum 306 is integrated with a discharge pipe 307, the lower end of the discharge pipe 307 is integrated with a discharge pipe head 308, the outer end of the discharge pipe 307 is provided with a cleaning cover plug 310, the lower end of the feed hopper 302 and located in the feed fixed drum 301 is provided with a feed guide pipe 311, the outer surface of the furnace tube cover 317 is integrated with a sealing fixing ring 314, and the side of the sealing fixing ring 314 is provided with a bolt locking washer 315 A sealing cover ring 316 is arranged on the side of the bolt locking washer 315, a sealing oil chamber 318 is arranged in the sealing cover ring 316, and a plurality of second locking bolts 321 are arranged between the bolt locking washer 315 and the sealing cover ring 316; a heat-insulating sealing cover 309 is arranged on the outer cover of the sealing cover ring 316, and a plurality of first locking bolts 320 are arranged between the bolt locking washer 315 and the heat-insulating sealing cover 309, and each of the first locking bolts 320 is partially sleeved with a rubber bolt sleeve 319.

[0020] In the above technical solution, the rotating toothed disc 305 on the rotating heating furnace 3 is rotated by the driving gear 17 meshing with one side, thereby driving the heating furnace tube 303 to rotate, and the pushing auger 312 on the inner wall of the heating furnace tube 303 can push the internal quartz sand to move slowly; The quartz sand raw material is added into the feed fixed drum 301 through the feed hopper 302, and then guided into the interior of the heating furnace tube 303 through the feed guide pipe 311. After being heated inside, it is discharged into the discharge pipe 307 at the other end of the heating furnace tube 303, and then falls into the water quenching tank 6 through the discharge pipe head 308.

[0021] In the above technical solution, quartz sand is placed into a rotary heating furnace 3 for heating, and the high temperature leaking from the internal joints can be isolated by the heat-insulating sealing cover 309 at the front end of the rotary heating furnace 3, wherein the components are heated by the high-frequency heating furnace 5, and then the quartz sand is heated by the components, and after heating, the material is unloaded from the other end of the rotary heating furnace 3 and water quenched in the water quenching tank 6, so that the processing effect of the quartz sand can be better.

[0022] A motor base plate 10 is fixedly mounted on the upper surface of the transmission mounting plate 9, a driving motor 11 is integrated on the upper end of the motor base plate 10, a transmission back plate 12 is arranged at the front end of the driving motor 11, two transmission turntables 13 are rotatably mounted on the front end of the transmission back plate 12, transmission sleeves of the two transmission turntables 13 are provided with transmission belts 14, one of the transmission turntables 13 is coaxially fixedly connected with the output shaft of the driving motor 11, a reduction box 15 is connected to the rear end of the rotating shaft of the other transmission turntable 13, a reduction box base plate 18 is arranged at the lower end of the reduction box 15, the reduction box base plate 18 is fixedly mounted on the transmission mounting plate 9, a driving gear mounting shaft 16 is connected to the side output end of the reduction box 15, a driving gear 17 is coaxially fixedly mounted on the front end of the driving gear mounting shaft 16.

[0023] In the above technical solution, one of the transmission turntables 13 is driven by starting the driving motor 11, and the other transmission turntable 13 is driven to rotate by the transmission belt 14, and then the reduction gear 15 is used to reduce the speed and turn, and then the driving gear 17 is used to rotate, thereby providing rotational power.

[0024] like Figure 1 , Figures 8 to 10As shown, the high-frequency heating furnace 5 includes: a heating furnace bottom shell 501, a reversible furnace cover 502, a furnace tube upper cover 503, a furnace tube lower seat 504, a furnace cover reversing handle 505, a fixed buckle ear 508, a furnace cover rubber pad seat 509, a furnace cover rubber pad 510, a heat collecting groove 511, a high-frequency heating copper ring 512, and a furnace cover reversing hinge 513; the rear side of the heating furnace bottom shell 501 is provided with a furnace cover reversing hinge 513, the heating furnace bottom shell 501 is provided with a reversible furnace cover 502 through the furnace cover reversing hinge 513, the upper end surface of the heating furnace bottom shell 501 is provided with a furnace tube lower seat 504, the lower end surface of the reversible furnace cover 502 is provided with a furnace tube upper cover 503, and the front end of the reversible furnace cover 502 is provided with a furnace cover reversing handle 505; the heating furnace bottom shell 501 and the front end of the reversible furnace cover 502 are fixedly installed Two furnace cover rubber pad seats 509 are installed, and a furnace cover rubber pad 510 is fixedly installed on the inner side of each of the furnace cover rubber pad seats 509, and a fixed buckle ear 508 is fixedly installed on the front end of the flip furnace cover 502; heat collecting grooves 511 are opened in the furnace tube upper cover 503 and the furnace tube lower seat 504, and a high-frequency heating copper ring 512 is arranged on the inner side of each of the furnace tube upper cover 503 and the furnace tube lower seat 504, damping cylinder mounting seats 506 are arranged on both sides of the heating furnace bottom shell 501 and the flip furnace cover 502, and damping cylinders 507 are arranged on the two damping cylinder mounting seats 506 on the same side, and a buckle cover rotating seat 514 is arranged at the front end of the heating furnace bottom shell 501, a buckle cover middle leaf 515 is rotatably installed on the buckle cover rotating seat 514, and a locking buckle cover 516 is rotatably installed on the outer end of the buckle cover middle leaf 515.

[0025] In the above technical solution, the furnace cover 502 is flipped to make the furnace cover rubber pad 510 of the furnace cover rubber pad seat 509 at the front end contact with the furnace cover rubber pad 510 of the furnace cover rubber pad seat 509 at the front end of the lower heating furnace bottom shell 501, and then the locking buckle cover 516 is flipped and buckled on the fixed buckle ear 508 at the upper end to lock the flip furnace cover 502, and then the high-frequency heating copper ring 512 is started to heat the furnace tube, wherein the rotating damping cylinder mounting seat 506 can be supported by the damping cylinder 507.

[0026] Working principle: The present invention heats quartz sand by placing it into a rotary heating furnace 3. The heat-insulating sealing cover 309 at the front end of the rotary heating furnace 3 can isolate the high temperature leaking from the joint inside. The high-frequency heating furnace 5 heats the components, and then the components heat the quartz sand. After heating, the quartz sand is unloaded from the other end of the rotary heating furnace 3 and water-quenched in a water quenching tank 6, so that the processing effect of the quartz sand can be better. Among them, by starting the driving motor 11 to drive one of the driving turntables 13, and then driving the other driving turntable 13 to rotate through the driving belt 14, then the speed reduction box 15 is used to reduce the speed and turn, and then the driving gear 17 is used to rotate, so as to provide the power for rotation; The rotating gear 305 on the rotating heating furnace 3 is rotated by engaging the driving gear 17, thereby driving the heating furnace tube 303 to rotate, and the pushing auger 312 on the inner wall of the heating furnace tube 303 is used to push the internal quartz sand to move slowly; The quartz sand raw material is added into the feed fixed drum 301 through the feed hopper 302, and then introduced into the heating furnace tube 303 through the feed guide pipe 311. After being heated inside, the material is discharged into the discharge pipe 307 at the other end of the heating furnace tube 303, and then falls into the water quenching tank 6 through the discharge pipe head 308; Among them, by flipping the flip furnace cover 502, the furnace cover rubber pad 510 of the furnace cover rubber pad seat 509 at the front end is brought into contact with the furnace cover rubber pad 510 of the furnace cover rubber pad seat 509 at the front end of the lower heating furnace bottom shell 501, and then the locking buckle cover 516 is flipped and buckled on the fixed buckle ear 508 at the upper end to lock the flip furnace cover 502, and then the high-frequency heating copper ring 512 is started to heat the furnace tube, wherein the rotating damping cylinder mounting seat 506 can be supported by the damping cylinder 507.

[0027] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A calcining device for producing high-purity quartz sand, comprising a device bottom plate (1), a rotary heating furnace (3) and a high-frequency heating furnace (5), characterized in that: A first furnace tube support frame (2) and a second furnace tube support frame (4) are fixedly mounted on the upper end of the device bottom plate (1); furnace tube fixing frames (19) are respectively arranged at the inner ends of the first furnace tube support frame (2) and the second furnace tube support frame (4); the rotary heating furnace (3) is respectively fixedly mounted on the first furnace tube support frame (2) and the second furnace tube support frame (4) via the furnace tube fixing frames (19); and the high-frequency heating furnace (5) is fixedly mounted on the upper end surface of the device bottom plate (1); Bottom plate support feet (7) are provided at the four corners of the lower end of the device bottom plate (1), and a water quenching tank (6) is fixedly installed on the upper end surface of the device bottom plate (1) and located at the front end of the first furnace tube support frame (2).

2. A calcining device for producing high-purity quartz sand according to claim 1, characterized in that: A rotating support frame (8) is fixedly mounted on the upper surface of the device bottom plate (1) and located at the front end of the second furnace tube support frame (4), and a transmission mounting plate (9) is fixedly mounted on the upper end of the rotating support frame (8).

3. A calcining device for producing high-purity quartz sand according to claim 2, characterized in that: A motor base plate (10) is fixedly mounted on the upper surface of the transmission mounting plate (9); a drive motor (11) is integrally arranged on the upper end of the motor base plate (10); a transmission back plate (12) is arranged at the front end of the drive motor (11); two transmission turntables (13) are rotatably mounted at the front end of the transmission back plate (12); and transmission sleeves on the two transmission turntables (13) are provided with transmission belts (14).

4. A calcining device for producing high-purity quartz sand according to claim 3, characterized in that: One of the transmission turntables (13) is coaxially fixedly connected to the output shaft of the drive motor (11); the rear end of the rotating shaft of the other transmission turntable (13) is connected to a reduction box (15); a reduction box bottom plate (18) is provided at the lower end of the reduction box (15); the reduction box bottom plate (18) is fixedly mounted on the transmission mounting plate (9); a driving gear mounting shaft (16) is connected to the output end of the side of the reduction box (15); and a driving gear (17) is coaxially fixedly mounted on the front end of the driving gear mounting shaft (16).

5. A calcining device for producing high-purity quartz sand according to claim 4, characterized in that: The rotary heating furnace (3) comprises: a feed fixed drum (301), a feed hopper (302), a heating furnace tube (303), a rotating toothed disc fixing ring (304), a rotating toothed disc (305), a discharge fixed drum (306), a discharge pipe (307), a discharge pipe head (308), a cleaning cover plug (310), a limit fixing ring (313), and a furnace tube cover tube (317); A furnace tube cover tube (317) is integrally provided on the side of the feed fixed drum (301), a heating furnace tube (303) is rotatably provided in the furnace tube cover tube (317), a rotating gear disc fixing ring (304) is integrally provided on the side of the heating furnace tube (303), a rotating gear disc (305) is fixedly mounted on one side surface of the rotating gear disc fixing ring (304), a limiting fixing ring (313) is integrally provided on the outer side of the other end of the heating furnace tube (303), and the limiting fixing ring (313) is rotatably provided on the discharge fixed drum (306); A feeding hopper (302) is integrally provided at the upper end of the fixed feeding drum (301), a pushing auger (312) is provided on the inner wall of the heating furnace tube (303), and the rotating toothed disc (305) is meshingly connected with the driving gear (17); A discharge pipe (307) is integrally provided on the outer side of the discharge fixed rotating drum (306), a discharge pipe head (308) is integrally provided on the lower end of the discharge pipe (307), and a cleaning cover plug (310) is provided on the outer end of the discharge pipe (307).

6. A calcining device for producing high-purity quartz sand according to claim 5, characterized in that: A feed guide pipe (311) is provided at the lower end of the feed hopper (302) and located inside the feed fixed drum (301); a sealing fixing ring (314) is integrally provided on the outer surface of the furnace tube cover drum (317); a bolt locking washer (315) is provided on the side of the sealing fixing ring (314); and a sealing cover ring (316) is provided on the side of the bolt locking washer (315).

7. A calcining device for producing high-purity quartz sand according to claim 6, characterized in that: A sealing oil chamber (318) is provided in the sealing cover ring (316), and a plurality of second locking bolts (321) are provided between the bolt locking washer (315) and the sealing cover ring (316); The sealing cover ring (316) is provided with a heat-insulating sealing cover (309) on its outer cover, a plurality of first locking bolts (320) are provided between the bolt locking washers (315) and the heat-insulating sealing cover (309), and each of the first locking bolts (320) is partially sleeved with a rubber bolt sleeve (319).

8. A calcining device for producing high-purity quartz sand according to claim 7, characterized in that: The high-frequency heating furnace (5) comprises: a heating furnace bottom shell (501), a reversible furnace cover (502), a furnace tube upper cover (503), a furnace tube lower seat (504), a furnace cover reversing handle (505), a fixing buckle ear (508), a furnace cover rubber pad seat (509), a furnace cover rubber pad (510), a heat collecting groove (511), a high-frequency heating copper ring (512), and a furnace cover reversing hinge (513); A furnace cover flip hinge (513) is arranged at the rear side of the heating furnace bottom shell (501); a flip furnace cover (502) is arranged on the heating furnace bottom shell (501) by rotating through the furnace cover flip hinge (513); a furnace tube lower seat (504) is arranged on the upper end surface of the heating furnace bottom shell (501); a furnace tube upper cover (503) is arranged on the lower end surface of the flip furnace cover (502); and a furnace cover flip handle (505) is arranged at the front end of the flip furnace cover (502); Two furnace cover rubber pad seats (509) are fixedly installed at the front ends of the heating furnace bottom shell (501) and the flip furnace cover (502), a furnace cover rubber pad (510) is fixedly installed on the inner side of each furnace cover rubber pad seat (509), and a fixing buckle ear (508) is fixedly installed at the front end of the flip furnace cover (502); The furnace tube upper cover (503) and the furnace tube lower seat (504) are both provided with a heat collecting groove (511), and a high-frequency heating copper ring (512) is provided inside each of the furnace tube upper cover (503) and the furnace tube lower seat (504).

9. A calcining device for producing high-purity quartz sand according to claim 8, characterized in that: Damping oil cylinder mounting seats (506) are provided on both sides of the heating furnace bottom shell (501) and the tilting furnace cover (502), and damping oil cylinders (507) are provided on the two damping oil cylinder mounting seats (506) on the same side.

10. A calcining device for producing high-purity quartz sand according to claim 9, characterized in that: A buckle cover rotating seat (514) is arranged at the front end of the heating furnace bottom shell (501), a buckle cover middle leaf (515) is rotatably mounted on the buckle cover rotating seat (514), and a locking buckle cover (516) is rotatably mounted on the outer end of the buckle cover middle leaf (515).

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