Exhaust type electric furnace for fused quartz

Abstract

The exhaust type electric furnace comprises a fixed cylinder arranged in the electric furnace, an exhaust rod is arranged in an inner cavity of the fixed cylinder, multiple sets of partition plates are arranged in the fixed cylinder, a first taper hole and a second taper hole are formed in the area between every two adjacent partition plates, and the opening directions of the first taper holes and the opening directions of the second taper holes are opposite. One-way valves are arranged in the first taper hole and the second taper hole, multiple sets of discharging columns are arranged on the exhaust rod, exhaust holes communicated with the exhaust rod are formed in the discharging columns, and gravity plugs are arranged at the bottoms of the exhaust holes. The exhaust rod moves up and down according to the fixed frequency and height, gas in fused quartz is sucked into a cavity formed by the partition plate, then the gas is exhausted under the action of gravity, and then the fused quartz is extruded into the electric furnace again, so that the gas in the deep position of the electric furnace is separated from the fused quartz.

Description

Technical Field

[0001] The invention belongs to the technical field of fused quartz, and in particular relates to an exhaust-type electric furnace for fused quartz. Background Art

[0002] During the quartz smelting process, impurities and non-metallic materials in the furnace interact with the quartz, generating chemical reactions and gases. Quartz is molten at high temperatures, and the high viscosity of fused quartz makes it difficult to expel bubbles, especially those deep within the furnace. These numerous bubbles and the difficulty in expelling them severely limit the quality and purity of fused quartz products. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an exhaust-type electric furnace for fused quartz, which at least partially solves the above problems.

[0004] The technical solution adopted by the present invention is as follows: The present invention proposes an exhaust-type electric furnace for fused quartz, comprising an electric furnace, a coil is provided in the electric furnace shell, and a traction shaft is provided in the center of the electric furnace; Furthermore, an upper support plate is provided above the electric furnace, a synchronization disk is provided above the upper support plate, and multiple groups of exhaust units are fixed on the upper support plate, and the exhaust units are inserted into the interior of the electric furnace.

[0005] Furthermore, the exhaust unit includes a fixed cylinder and an exhaust rod, the fixed cylinder is fixed on the upper support plate, the exhaust rod is slidably arranged in the inner cavity of the fixed cylinder, the top end of the exhaust rod is arranged in the synchronous disk, and the lower wall of the synchronous disk is provided with a power unit.

[0006] Furthermore, a plurality of partitions are provided in the fixing cylinder, and a first tapered hole and a second tapered hole are respectively provided in the areas between adjacent partitions, and the opening directions of the first tapered hole and the second tapered hole are opposite.

[0007] Preferably, the first tapered hole is located in the middle and lower part of the adjacent partition area, and the second tapered hole is located at the bottom of the adjacent partition area.

[0008] Furthermore, in order to make the first tapered hole and the second tapered hole work in one direction, a one-way valve is provided in each of the first tapered hole and the second tapered hole, and the one-way valve can be sealed with the first tapered hole and the second tapered hole.

[0009] Furthermore, the exhaust rod is provided with a plurality of discharge columns, and the discharge columns are provided with exhaust holes connected to the exhaust rod.

[0010] Furthermore, the one-way valve is provided with a first cone, which is adapted to the first conical hole and can be moved to a position where it seals and fits with the first conical hole; Furthermore, a baffle is provided on one side of the first cone, and the baffle is provided in the middle of the first conical hole. The baffle can prevent the one-way valve from falling off from the first conical hole. The one-way valve in the second conical hole has the same structural principle as the one-way valve in the first conical hole.

[0011] Furthermore, a third conical hole is provided at the bottom of the exhaust hole. The third conical hole has two interconnected cavities, and a gravity plug is slidably provided in the third conical hole.

[0012] Furthermore, a hollow cone is provided at the upper end of the gravity plug, and a second cone is provided at the lower end of the gravity plug. The hollow cone is adapted to the upper cavity of the third conical hole, and the second cone is adapted to the lower cavity of the third conical hole.

[0013] The beneficial effects achieved by the present invention are as follows: the one-way valve in the first tapered hole can only suck in objects, and the one-way valve in the second tapered hole can only discharge objects. The two cooperate with the exhaust rod, and the exhaust rod moves up and down at a fixed frequency and height, sucking the gas in the molten quartz into the cavity formed by the partition, and then discharging the gas under the action of gravity, and then squeezing the molten quartz back into the electric furnace, so that the gas deep in the electric furnace is separated from the molten quartz. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 1 is a cross-sectional view of an exhaust-type electric furnace for fused quartz according to an embodiment of the present invention; Figure 2 This is a fracture view of the exhaust unit; Figure 3 It is a broken view of the cross-section view of the exhaust unit when sucking material; Figure 4 A fracture view of a cross-sectional view of the exhaust unit when discharging; Figure 5 A fracture view of a cross-sectional view of the fixed cylinder; Figure 6 It is a structural diagram of a one-way valve; Figure 7 Schematic diagram of the structure of the gravity plug; Figure 8 for Figure 3 Enlarged view of part I.

[0015] Among them, 1. Electric furnace, 2. Upper support plate, 3. Synchronous disk, 4. Power unit, 5. Coil, 6. Exhaust unit, 7. Traction shaft, 8. Fixed cylinder, 9. Exhaust rod, 10. First conical hole, 11. Second conical hole, 12. One-way valve, 13. Discharge column, 14. Exhaust hole, 15. Gravity plug, 16. Third conical hole, 17. Partition, 18. First cone, 19. Baffle, 20. Second cone, 21. Hollow cone.

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention but do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0019] like Figure 1 As shown, an embodiment of the present invention provides an exhaust-type electric furnace 1 for molten quartz, comprising an electric furnace 1. A coil 5 is provided in the housing of the electric furnace 1. The coil 5 is used to heat the circuit at high frequency to melt the quartz raw material in the electric furnace 1. A traction shaft 7 is provided in the center of the electric furnace 1. The traction shaft 7 can be separated from the electric furnace 1. After the quartz raw material is melted, it will adhere to the traction shaft 7, so that the quartz block can be pulled and unloaded by the traction shaft 7 to complete the unloading operation.

[0020] An upper support plate 2 is provided above the electric furnace 1, and a synchronous disk 3 is provided above the upper support plate 2. Openings are left in the centers of the synchronous disk 3 and the upper support plate 2 to facilitate the addition of quartz raw materials. Multiple sets of exhaust units 6 are fixed on the upper support plate 2, and the exhaust units 6 are inserted into the interior of the electric furnace 1 to absorb and discharge bubbles between the molten quartz in the electric furnace 1.

[0021] Combine Figure 2 As shown, the exhaust unit 6 includes a fixed cylinder 8 and an exhaust rod 9. The fixed cylinder 8 is fixed on the upper support plate 2. The exhaust rod 9 is slidably arranged in the inner cavity of the fixed cylinder 8. The top of the exhaust rod 9 is arranged in the synchronous disk 3. The lower wall of the synchronous disk 3 is provided with a power unit 4. When the power unit 4 is started, the synchronous disk 3 is driven to move up and down, thereby driving the exhaust rod 9 to move up and down. The exhaust rod 9 moves back and forth up and down relative to the fixed cylinder 8. The two cooperate with each other, which is similar to the working principle of an air pump. The exhaust rod 9 moves upward to extract the gas in the electric furnace 1, and the gas is discharged upward. When it moves downward, the excess molten quartz is pressed back into the electric furnace 1.

[0022] As shown Figure 5As shown, multiple groups of partitions 17 are provided in the fixed cylinder 8, and the areas between adjacent partitions 17 are respectively provided with first tapered holes 10 and second tapered holes 11. The opening directions of the first tapered holes 10 and the second tapered holes 11 are opposite. There is a working area between adjacent partitions 17, and the exhaust work is completed here. In some embodiments, the first tapered hole 10 is at the top, and the opening direction of the tapered hole is inward, which is used to absorb the molten quartz in the electric furnace 1. The second tapered hole 11 is at the bottom, and the opening direction of the tapered hole is outward, which is used to transport the exhausted molten quartz outward.

[0023] Preferably, the first tapered hole 10 is located in the middle and lower part of the area adjacent to the partition 17, and the second tapered hole 11 is located at the bottom of the area adjacent to the partition 17. When the molten quartz enters from the middle and lower part of the separate working interval, it slides downward under the action of gravity. At this time, the molten quartz is in a small mass, and the viscous resistance of the molten quartz is small. The gas inside the mass has a sufficient distance to separate from the molten quartz and is eventually discharged from the bottom of the current working interval.

[0024] like Figure 3 and Figure 4 As shown, in order to make the first tapered hole 10 and the second tapered hole 11 work in one direction, the first tapered hole 10 is only used for suction and the second tapered hole 11 is only used for discharge. A one-way valve 12 is provided in each of the first tapered hole 10 and the second tapered hole 11. The one-way valve 12 can be sealed with the first tapered hole 10 and the second tapered hole 11. In some embodiments, the first tapered hole 10 and the second tapered hole 11 are exactly the same in shape and size, and the one-way valve 12 inside them also adopts the same type and size. The one-way valve 12 in the first tapered hole 10 is squeezed by the molten quartz and separated from the first tapered hole 10, so that a gap exists between the two. The molten quartz in the electric furnace 1 can enter the fixed cylinder 8 through this gap. The one-way valve 12 in the second tapered hole 11 is also squeezed by the molten quartz, so that it is sealed with the second tapered hole 11, and the external molten quartz cannot enter the fixed cylinder 8 from the second tapered hole 11.

[0025] After the molten quartz is sucked in, in order to guide the gas out, multiple groups of discharge columns 13 are provided on the exhaust rod 9. The discharge columns 13 are provided with exhaust holes 14 connected to the exhaust rod 9. The volume of the sucked molten quartz is small, and the viscous resistance inside it is much smaller than the resistance in the electric furnace 1. Under the action of the density difference, the gas in the molten quartz separates from the quartz upwards, enters the exhaust rod 9 from the exhaust holes 14, and is finally discharged.

[0026] like Figure 6As shown, after the molten quartz exhaust is completed, in order to discharge the molten quartz, a first cone 18 is provided on the one-way valve 12, and the first cone 18 is adapted to the first tapered hole 10. The first cone 18 can move to a position where it is sealed and matched with the first tapered hole 10. In a free state, the pressure of the molten quartz in the electric furnace 1 will press the first cone 18 to separate from the first tapered hole 10, but when the discharge column 13 moves downward following the exhaust rod 9, the one-way valve 12 will retract into the first tapered hole 10 on the inner wall of the fixed cylinder 8 when it contacts the side wall of the discharge column 13, and the first tapered hole 10 is sealed and matched with the first cone 18, thereby preventing the molten quartz from being discharged from the first tapered hole 10.

[0027] A baffle 19 is provided on one side of the first cone 18 and is located in the middle of the first tapered hole 10. As the one-way valve 12 slides left and right, the baffle 19 prevents the one-way valve 12 from falling out of the first tapered hole 10. The gap between the baffles 19 does not hinder the flow of molten quartz. The one-way valve 12 in the second tapered hole 11 has the same structural principle as the one-way valve 12 in the first tapered hole 10, but their directions are opposite, and therefore the direction of fluid restriction is also opposite. The one-way valve 12 in the second tapered hole 11 can only discharge objects outward and cannot absorb objects inward.

[0028] like Figure 7 and Figure 8 As shown, in the process of discharging the molten quartz downward from the discharge column 13, in order to prevent the molten quartz from entering the exhaust hole 14, a third tapered hole 16 is provided at the bottom of the exhaust hole 14. The third tapered hole 16 has two layers of interconnected cavities, and a gravity plug 15 is slidably provided in the third tapered hole 16.

[0029] The upper end of the gravity plug 15 is provided with a hollow cone 21, and the lower end of the gravity plug 15 is provided with a second cone 20. The hollow cone 21 fits into the upper cavity of the third tapered hole 16, and the second cone 20 fits into the lower cavity of the third tapered hole 16. The gravity plug 15 cooperates with the third tapered hole 16. When the gravity plug 15 naturally droops, the vent 14 is open, allowing gas to enter the vent 14 through the hollow gap of the hollow cone 21. When the lower wall of the gravity plug 15 is blocked, the supporting force causes the gravity plug 15 to move upward to close the vent 14. Therefore, when the lower wall of the gravity plug 15 contacts the fused quartz, the gravity plug 15 blocks the vent 14 upward, squeezing the fused quartz below and discharging it from the second tapered hole 11.

[0030] During specific operation, quartz raw materials are added into the electric furnace 1 from the center holes of the upper support plate 2 and the synchronous disk 3, and the coil 5 is started to heat the electric furnace 1. The quartz raw materials gradually become molten, and the impurities, non-metallic substances, etc. in the quartz raw materials react with the quartz to generate gas.

[0031] Start the power unit 4, which drives the exhaust rod 9 to move back and forth. When the exhaust rod 9 moves to the upper limit position, the discharge column 13 is at the top of the space where the adjacent partition 17 is located. At this time, the discharge column 13 is neither in contact with the one-way valve 12 in the first tapered hole 10 nor in contact with the one-way valve 12 in the second tapered hole 11. The one-way valves 12 in the two holes slide toward the center of the exhaust rod 9 under the action of the pressure of the molten quartz in the electric furnace 1, so that a gap appears between the upper first tapered hole 10 and the one-way valve 12 inside it, and the lower second tapered hole 11 is sealed with the one-way valve 12 inside it. The molten quartz can only enter the inner cavity of the fixed cylinder 8 from the upper first tapered hole 10.

[0032] After the molten quartz enters the inner cavity of the fixed cylinder 8, the size of the molten quartz is small, and the viscous resistance to the gas inside is small, so the gas can escape from the molten quartz more easily. Under the action of the density difference, the gas moves upward and the molten quartz moves downward. The gas enters the exhaust hole 14 from the gap between the third tapered hole 16 and the gravity plug 15, and is finally discharged from the exhaust rod 9.

[0033] When the exhaust rod 9 moves downward, the discharge column 13 drives the gravity plug 15 to move downward. The gravity plug 15 first contacts the molten quartz, and under the action of the reverse force, the gravity plug 15 moves upward and seals with the third tapered hole 16. The gravity plug 15 and the bottom wall of the discharge column 13 together form a complete plane, which compresses the molten quartz below this plane.

[0034] After being pressurized, the molten quartz enters the second tapered hole 11, pushing the one-way valve 12 in the second tapered hole 11 to move outward, so that a gap appears between the one-way valve 12 and the second tapered hole 11. The molten quartz is discharged from this gap, thereby completing the gas discharge and the molten quartz circulation into the electric furnace 1.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An exhaust-type electric furnace (1) for fused quartz, characterized in that: include: A fixed cylinder (8) is arranged in an electric furnace (1), wherein a plurality of groups of partitions (17) are arranged in the fixed cylinder (8), and a first conical hole (10) and a second conical hole (11) are respectively arranged in the area between adjacent partitions (17), wherein the opening directions of the first conical hole (10) and the second conical hole (11) are opposite, and a one-way valve (12) is arranged in each of the first conical hole (10) and the second conical hole (11), and the one-way valve (12) can be sealed and matched with the first conical hole (10) and the second conical hole (11); The exhaust rod (9) is slidably arranged in the inner cavity of the fixed cylinder (8), and includes a plurality of discharge columns (13). When the one-way valve (12) contacts the discharge column (13), it will retract into the inner wall of the fixed cylinder (8). The discharge column (13) is provided with an exhaust hole (14) connected to the exhaust rod (9). A gravity plug (15) is provided at the bottom of the exhaust hole (14). When the gravity plug (15) naturally droops, the exhaust hole (14) is in an open state. After receiving the support force, the gravity plug (15) will close the exhaust hole (14) upward.

2. The exhaust-type electric furnace (1) for molten quartz according to claim 1, characterized in that: A third conical hole (16) is provided at the bottom of the exhaust hole (14), and the third conical hole (16) has two layers of interconnected cavities.

3. The exhaust-type electric furnace (1) for fused quartz according to claim 2, characterized in that: The upper end of the gravity plug (15) is provided with a hollow cone (21), and the lower end of the gravity plug (15) is provided with a second cone (20).

4. The exhaust-type electric furnace (1) for molten quartz according to claim 3, characterized in that: The hollow cone (21) is adapted to fit into the upper cavity of the third cone hole (16), and the second cone (20) is adapted to fit into the lower cavity of the third cone hole (16).

5. The exhaust-type electric furnace (1) for fused quartz according to claim 1, characterized in that: The one-way valve (12) is provided with a first cone (18), the first cone (18) is adapted to the first cone hole (10), and the first cone (18) can be sealed with the first cone hole (10).

6. The exhaust-type electric furnace (1) for molten quartz according to claim 5, characterized in that: A baffle (19) is provided on one side of the first cone (18), and the baffle (19) is provided in the middle of the first cone hole (10). The baffle (19) is used to prevent the one-way valve (12) from falling out of the first cone hole (10). The one-way valve (12) in the second cone hole (11) has the same structural principle as the one-way valve (12) in the first cone hole (10).

7. The exhaust-type electric furnace (1) for fused quartz according to claim 1, characterized in that: An upper support plate (2) is provided above the electric furnace (1), and the fixing cylinder (8) is fixed on the upper support plate (2).

8. The exhaust-type electric furnace (1) for fused quartz according to claim 7, characterized in that: A synchronization disk (3) is provided above the upper support plate (2), and the top end of the exhaust rod (9) is provided in the synchronization disk (3).

9. The exhaust-type electric furnace (1) for molten quartz according to claim 8, characterized in that: A power unit (4) is provided on the lower wall of the synchronization disk (3).

10. The exhaust-type electric furnace (1) for fused quartz according to claim 1, characterized in that: A coil (5) is provided in a shell of the electric furnace (1), and a traction shaft (7) is provided at the center of the electric furnace (1).

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