A gas pressure stabilizing device for electric furnace used in quartz tube drawing production

Abstract

The present invention belongs to the technical field of quartz drawn tube production, and in particular, is an electric furnace gas pressure stabilizing device for quartz drawn tube production. In view of the fact that during the current processing and production of quartz tubes, the temperature of the electric furnace is changing, which causes the internal gas pressure to change all the time, thereby affecting the production of the heated quartz tubes, and the electric furnace is not convenient to adjust the internal gas pressure during production, and cannot produce quartz tubes of different qualities. At the same time, when the quartz tubes are taken out, they are still in a high temperature state and are prone to deformation, which affects the use. The following scheme is now proposed, which includes: a furnace body; a cover plate, which is installed on the top of the furnace body, and the top of the furnace body is an opening. The present invention has a simple structure and is easy to use. It can be convenient to stabilize the pressure during the production of quartz drawn tubes, and can also adjust the gas pressure in the furnace body, and can conveniently blow and shape the produced quartz drawn tubes, which is convenient for people to use.

Description

Technical Field

[0001] The invention relates to the technical field of quartz drawn tube production, and in particular to an electric furnace gas pressure stabilizing device for quartz drawn tube production. Background Art

[0002] Quartz tube is a special industrial technical glass made of silicon dioxide, which is a very good basic material. Quartz glass has a series of excellent physical and chemical properties. It is used in electric fire buckets, electric stoves, and electric heaters to generate heat. Quartz tubes can be roughly divided into the following types: transparent quartz tubes (outer diameter 1.5mm-300mm), UV filter quartz tubes, colored quartz tubes, etc. Closed tube diffusion requires quartz tubes because quartz tubes can withstand high temperatures of about 1250℃, and become very soft and sticky above 1800℃, and can be made into the required shape. On the other hand, since the raw material used for quartz tubes is special grade crystal stone, it has high purity and contains very few harmful impurities, which can ensure the quality of diffusion and alloy preparation, so closed tube diffusion often uses quartz tubes.

[0003] At present, during the processing and production of quartz tubes, the temperature of the electric furnace is changing, which causes the internal air pressure to change all the time, thus affecting the production of the heated quartz tubes. In addition, it is not convenient to adjust the internal air pressure of the electric furnace during production, and quartz tubes of different qualities cannot be produced. At the same time, when the quartz tubes are taken out, they are still in a high temperature state and are prone to deformation, which affects their use. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that during the current processing and production of quartz tubes, the temperature of the electric furnace changes, causing the internal air pressure to change all the time, thereby affecting the production of the heated quartz tubes, and the electric furnace is not convenient to adjust the internal air pressure during production, and quartz tubes of different qualities cannot be produced. At the same time, when the quartz tubes are taken out, they are still in a high temperature state and are prone to deformation, affecting the use. A gas pressure stabilizing device for an electric furnace for quartz drawn tube production is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An electric furnace gas pressure stabilizing device for producing quartz drawn tubes, comprising:

[0007] Furnace body;

[0008] A cover plate is installed on the top of the furnace body, and the top of the furnace body is open. Four symmetrically arranged support legs are fixedly installed on the bottom of the furnace body, and a pad is fixedly installed on the bottom end of the support legs. Four symmetrically arranged concave seats are fixedly installed on the outer side of the furnace body, and a first motor is fixedly installed on the bottom of one of the four concave seats;

[0009] A voltage stabilizing mechanism is installed on the outside of the furnace body, and a counterweight magnetic ring is provided on the outer sliding sleeve of the furnace body, and the counterweight magnetic ring is transmission-connected with the voltage stabilizing mechanism;

[0010] An adjusting mechanism is installed on the outer side of the furnace body, cooperates with the voltage stabilizing mechanism, and is drivingly connected to the first motor;

[0011] An air guide mechanism is installed on the outside of the furnace body, a fixing plate is fixedly installed on the outside of the furnace body, a second motor is fixedly installed on the bottom of the fixing plate, an active rod is fixedly installed on the output shaft of the second motor, and the active rod is drivingly connected to the air guide mechanism;

[0012] The lifting mechanism is installed on the furnace body and is transmission-connected with the air guide mechanism and the cover plate.

[0013] Furthermore, the pressure stabilizing mechanism includes six vacuum cylinders, which are all fixedly installed on the outside of the furnace body. A guide hole is opened on one side of the vacuum cylinder, and the guide hole is communicated with the furnace body.

[0014] Furthermore, a piston plate is slidably connected to the inner wall of the vacuum cylinder, a pull rod is fixedly installed on the bottom of the piston plate, and the counterweight magnetic ring is fixedly connected to the six pull rods.

[0015] Furthermore, the adjustment mechanism includes a pole top ring, which is slidably installed on the outside of the furnace body, and the pole top ring cooperates with the counterweight magnetic ring. Four symmetrically arranged positioning seats are fixedly installed on the outside of the furnace body, and a screw is rotatably connected to the positioning seat. The four screws are threadedly connected to the pole top ring.

[0016] Furthermore, the four concave seats are rotatably connected with the same internal gear ring, a driven gear is fixedly installed on the bottom end of the screw, a driving gear is fixedly installed on the output shaft of the first motor, the driving gear is meshed with the internal gear ring, and the internal gear ring is meshed with the four driven gears.

[0017] Furthermore, the air guide mechanism includes two air guide boxes, a mounting rod is fixedly installed on the inner wall of the air guide box, a positioning shaft is rotatably connected to the mounting rod, a fan blade is fixedly installed on the positioning shaft, an air inlet is arranged at the bottom of the air guide box, and a grille is arranged in the air inlet.

[0018] Furthermore, the tops of the two air guide boxes are fixedly installed with the same annular positioning box, the top of the annular positioning box is rotatably connected to an annular exhaust box, the inner side of the annular exhaust box is provided with multiple air outlets, the top of the annular positioning box is provided with an annular through hole, the bottom of the annular exhaust box is provided with an annular connecting hole, the annular through hole and the annular connecting hole are interconnected, and the top of the air guide box is provided with an air hole, and the air hole and the annular positioning box are interconnected.

[0019] Furthermore, six L-shaped clamping rods are fixedly installed on the top of the annular positioning box, and the six L-shaped clamping rods are clamped and connected to the annular exhaust box.

[0020] Furthermore, the lifting mechanism includes two L-shaped connecting plates, which are fixedly connected to the cover plate. A lifting rod is fixedly installed on the top of the positioning shaft. The lifting rod is threadedly connected to the L-shaped connecting plates, and the top ends of the two lifting rods are rotatably connected to the same top plate.

[0021] Furthermore, a driving gear is fixedly installed on the top of the active rod, an outer gear ring is fixedly installed on the outer side of the annular exhaust box, the driving gear and the outer gear ring are meshed with each other, and a transmission gear is fixedly installed on the positioning shaft, the transmission gear and the outer gear ring are meshed with each other.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) In this solution, since the exhaust cylinder is connected to the furnace body through the guide hole, and the piston plate is slidably connected to the exhaust hole, and under the action of the counterweight magnetic ring, the air in the furnace body can be exhausted to a certain extent, so that when the air pressure in the furnace body changes, the constant weight of the counterweight magnetic ring can stabilize the air pressure in the furnace body;

[0024] (2) In this solution, due to the mutual meshing of the driving gear and the inner gear ring, the mutual meshing of the driven gear and the inner gear ring, and the threaded connection between the screw and the magnetic pole top ring, the output shaft of the first motor can adjust the height of the magnetic pole top ring, and then when the magnetic pole of the magnetic pole top ring is opposite to the magnetic pole of the counterweight magnetic ring, the counterweight magnetic ring can be pushed to reduce the weight of the counterweight magnetic ring;

[0025] (3) In this solution, since the driving gear is meshed with the outer gear ring, and the outer gear ring is meshed with the transmission gear, the annular exhaust box and the annular positioning box are connected through the annular through hole and the annular connecting hole, so that the rotating active rod drives the fan blades to blow and shape the removed quartz drawn tube;

[0026] (4) In this solution, since a threaded connection is provided between the lifting rod and the L-shaped connecting plate, the rotating lifting rod can automatically drive the cover plate to open, thereby facilitating material unloading and sealing the furnace body.

[0027] The invention has a simple structure and is easy to use. It can be convenient for stabilizing the pressure during the production of the quartz drawn tube, and can also adjust the air pressure in the furnace body. It can also be convenient for blowing and shaping the produced quartz drawn tube, and is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of an electric furnace gas pressure stabilizing device for producing quartz tubes proposed by the present invention;

[0029] Figure 2 This is a bottom-up structural schematic diagram of an electric furnace gas pressure stabilizing device for producing quartz tubes proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the first motor, the inner gear ring, the furnace body and its components of an electric furnace gas pressure stabilizing device for producing quartz tubes proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the air guide mechanism and the lifting mechanism of the electric furnace gas pressure stabilization device for quartz tube drawing production proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the lifting mechanism structure of an electric furnace gas pressure stabilizing device for quartz tube drawing production proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of an annular exhaust box of an electric furnace gas pressure stabilization device for quartz tube drawing production proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of an annular positioning box of an electric furnace gas pressure stabilizing device for producing quartz tubes proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the transmission connection structure of the first motor and four screw rods of an electric furnace gas pressure stabilization device for quartz tube drawing production proposed by the present invention;

[0036] Fig. 9 This is a schematic diagram of the structure of an air guide box of an electric furnace gas pressure stabilization device for quartz tube drawing production proposed by the present invention;

[0037] Fig.10 This is a schematic diagram of the concave seat structure of an electric furnace gas pressure stabilizing device for quartz tube drawing production proposed by the present invention;

[0038] Fig.11 This is a schematic diagram of the installation rod and fan blade structure of an electric furnace gas pressure stabilization device for quartz tube drawing production proposed by the present invention;

[0039] Fig.12 This is a schematic diagram of the top view of the structure of an air guide box of an electric furnace gas pressure stabilization device for producing quartz tubes proposed by the present invention;

[0040] Fig.13 This is a schematic diagram of the structure of a pressure stabilizing mechanism of an electric furnace gas pressure stabilizing device for producing quartz tubes proposed by the present invention;

[0041] Fig.14 The invention provides a gas pressure stabilizing device for an electric furnace used in the production of quartz tubes. Figure 1 Schematic diagram of the structure of part A;

[0042] Fig.15 The invention provides a gas pressure stabilizing device for an electric furnace used in the production of quartz tubes. Figure 2 Schematic diagram of the structure of part B.

[0043] In the figure: 1. furnace body; 2. voltage stabilizing mechanism; 21. vacuum pump; 22. counterweight magnetic ring; 23. piston plate; 24. pull rod; 25. guide hole; 3. adjustment mechanism; 31. magnetic pole top ring; 32. positioning seat; 33. screw rod; 34. inner gear ring; 35. driven gear; 36. first motor; 37. driving gear; 38. concave seat; 4. cover plate; 5. air guide mechanism; 51. air guide box; 52. mounting rod; 53. positioning shaft; 54. fan blade; 55. annular positioning Box; 56, annular exhaust box; 57, air outlet; 571, annular through hole; 572, annular connecting hole; 573, air hole; 58, L-shaped clamping rod; 59, grille; 6, lifting mechanism; 61, lifting rod; 62, L-shaped connecting plate; 63, top plate; 7, fixing plate; 8, second motor; 9, active rod; 10, driving gear; 11, supporting leg; 12, pad; 13, water tank; 14, counterweight box; 15, conduit; 16, transmission gear; 17, outer gear ring. DETAILED DESCRIPTION

[0044] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0045] Embodiment 1

[0046] Reference Figure 1-Figure 15 , an electric furnace gas pressure stabilizing device for producing quartz drawn tubes, comprising:

[0047] Furnace body 1;

[0048] The cover plate 4 is mounted on the top of the furnace body 1, and the top of the furnace body 1 is open. Four symmetrically arranged support legs 11 are fixedly mounted on the bottom of the furnace body 1, and a pad 12 is fixedly mounted on the bottom end of the support legs 11. Four symmetrically arranged concave seats 38 are fixedly mounted on the outer side of the furnace body 1, and a first motor 36 is fixedly mounted on the bottom of one of the four concave seats 38;

[0049] The voltage stabilizing mechanism 2 is installed on the outside of the furnace body 1. The outer sliding sleeve of the furnace body 1 is provided with a counterweight magnetic ring 22, and the counterweight magnetic ring 22 is transmission-connected with the voltage stabilizing mechanism 2.

[0050] The regulating mechanism 3 is installed on the outer side of the furnace body 1, cooperates with the voltage stabilizing mechanism 2, and is transmission-connected to the first motor 36;

[0051] The air guide mechanism 5 is installed on the outside of the furnace body 1. A fixing plate 7 is fixedly installed on the outside of the furnace body 1. A second motor 8 is fixedly installed on the bottom of the fixing plate 7. An active rod 9 is fixedly installed on the output shaft of the second motor 8. The active rod 9 is transmission-connected to the air guide mechanism 5.

[0052] The lifting mechanism 6 is installed on the furnace body 1 and is transmission-connected to the air guide mechanism 5 and the cover plate 4 .

[0053] In this embodiment, the pressure stabilizing mechanism 2 includes six vacuum cylinders 21, which are all fixedly installed on the outside of the furnace body 1. A guide hole 25 is opened on one side of the vacuum cylinder 21, and the guide hole 25 is interconnected with the furnace body 1. A piston plate 23 is slidably connected to the inner wall of the vacuum cylinder 21, and a pull rod 24 is fixedly installed on the bottom of the piston plate 23. The counterweight magnetic ring 22 is fixedly connected to the six pull rods 24. The piston plate 23 sucks downward under the action of the pull rod 24 and the counterweight magnetic ring 22, thereby forming a negative pressure in the vacuum cylinder 21, and at the same time acts on the furnace body 1 through the guide hole 25, so that a negative pressure appears in the furnace body 1 and remains stable. When the air pressure in the furnace body 1 changes with the change of temperature, due to the fixed gravity of the counterweight magnetic ring 22, the pressure in the vacuum cylinder 21 and the furnace body 1 can be kept fixed, thereby stabilizing the pressure in the furnace body 1.

[0054] In this embodiment, the adjustment mechanism 3 includes a pole top ring 31, which is slidably mounted on the outer side of the furnace body 1, and the pole top ring 31 cooperates with the counterweight magnetic ring 22. Four symmetrically arranged positioning seats 32 are fixedly mounted on the outer side of the furnace body 1, and a screw 33 is rotatably connected to the positioning seat 32. The four screws 33 are threadedly connected to the pole top ring 31, and the same internal gear ring 34 is rotatably connected between the four concave seats 38. A driven gear 35 is fixedly mounted on the bottom end of the screw 33, and a driving gear 37 is fixedly mounted on the output shaft of the first motor 36. The driving gear 37 is meshed with the internal gear ring 34, and the internal gear ring 34 is meshed with the four driven gears 35. The output shaft of the first motor 36 is driven by the driving gear 37. The gear 37 meshes with the inner gear ring 34, thereby driving the inner gear ring 34 to rotate. The inner gear ring 34 meshes with the four driven gears 35 to drive the four driven gears 35 to rotate. The driven gear 35 drives the screw 33 to rotate. The screw 33 is threadedly connected to the pole top ring 31, so that the pole top ring 31 can be adjusted to rise and fall. Since the pole top ring 31 and the counterweight magnetic ring 22 have the same magnetic pole on one side when they are close to each other, when the pole top ring 31 and the counterweight magnetic ring 22 are close to each other, the magnetic force of the pole top ring 31 can offset a part of the gravity of the counterweight magnetic ring 22, thereby adjusting the air pressure in the furnace body 1 and preventing the counterweight magnetic ring 22 from falling when the furnace body 1 is opened.

[0055] In this embodiment, the air guide mechanism 5 includes two air guide boxes 51, a mounting rod 52 is fixedly installed on the inner wall of the air guide box 51, a positioning shaft 53 is rotatably connected to the mounting rod 52, a fan blade 54 is fixedly installed on the positioning shaft 53, an air inlet is arranged at the bottom of the air guide box 51, a grille 59 is arranged in the air inlet, the same annular positioning box 55 is fixedly installed on the top of the two air guide boxes 51, an annular exhaust box 56 is rotatably connected to the top of the annular positioning box 55, a plurality of air outlets 57 are provided on the inner side of the annular exhaust box 56, an annular through hole 571 is provided on the top of the annular positioning box 55, an annular connecting hole 572 is provided on the bottom of the annular exhaust box 56, the annular through hole 571 and the annular connecting hole 572 are communicated with each other, and an air hole is provided on the top of the air guide box 51 573, the wind hole 573 is interconnected with the annular positioning box 55, and six L-shaped clamping rods 58 are fixedly installed on the top of the annular positioning box 55. The six L-shaped clamping rods 58 are clamped and connected with the annular exhaust box 56. The rotating positioning shaft 53 drives the fan blades 54 to rotate, and the fan blades 54 form air flow, so that the wind can be guided to the air guide box 51. The wind is introduced into the annular positioning box 55 through the wind hole 573, and then introduced into the annular exhaust box 56 when the annular through hole 571 and the annular connecting hole 572 are interconnected, so that the removed quartz drawn tube is blown and shaped through the air outlet 57. At the same time, the setting of the L-shaped clamping rod 58 can facilitate the positioning of the annular exhaust box 56, so that the annular exhaust box 56 can stably rotate on the annular positioning box 55.

[0056] In this embodiment, the lifting mechanism 6 includes two L-shaped connecting plates 62, which are fixedly connected to the cover plate 4. A lifting rod 61 is fixedly installed on the top of the positioning shaft 53, and the lifting rod 61 is threadedly connected to the L-shaped connecting plate 62. The tops of the two lifting rods 61 are rotatably connected to the same top plate 63. A driving gear 10 is fixedly installed on the top of the active rod 9. An outer gear ring 17 is fixedly installed on the outer side of the annular exhaust box 56. The driving gear 10 and the outer gear ring 17 are meshed with each other. A transmission gear 16 is fixedly installed on the positioning shaft 53, and the transmission gear 16 and the outer gear ring 17 are meshed with each other. The rotating active rod 9 can drive the outer gear ring 17 to rotate through the mutual meshing of the driving gear 10 and the outer gear ring 17. The outer gear ring 17 drives the positioning shaft 53 to rotate through the mutual meshing with the two transmission gears 16. The positioning shaft 53 drives the lifting rod 61 to rotate. The lifting rod 61 is threadedly connected to the L-shaped connecting plate 62, thereby driving the cover plate 4 to rise and fall.

[0057] In this embodiment, when working, the piston plate 23 sucks downward under the action of the pull rod 24 and the counterweight magnetic ring 22, thereby forming a negative pressure in the vacuum cylinder 21, and at the same time acts on the furnace body 1 through the guide hole 25, so that a negative pressure appears in the furnace body 1 and remains stable. When the air pressure in the furnace body 1 changes with the change of temperature, the gravity of the counterweight magnetic ring 22 is fixed, so that the pressure in the vacuum cylinder 21 and the furnace body 1 can be kept fixed, thereby stabilizing the pressure in the furnace body 1. When it is necessary to adjust the pressure in the furnace body 1, the switch of the first motor 36 is started, and the output shaft of the first motor 36 is driven by The driving gear 37 is meshed with the inner gear ring 34, so that the inner gear ring 34 can be driven to rotate. The inner gear ring 34 is meshed with the four driven gears 35 to drive the four driven gears 35 to rotate. The driven gear 35 drives the screw 33 to rotate. The screw 33 is threadedly connected with the pole top ring 31, so that the pole top ring 31 can be adjusted to rise and fall. Since the pole top ring 31 and the counterweight magnetic ring 22 are close to each other and have the same magnetic pole on one side, when the pole top ring 31 and the counterweight magnetic ring 22 are close to each other, the magnetic force of the pole top ring 31 can offset a part of the weight of the counterweight magnetic ring 22. The force can adjust the air pressure in the furnace body 1, and at the same time prevent the counterweight magnetic ring 22 from falling when the furnace body 1 is opened. When the quartz tube needs to be taken out, the second motor 8 switch is started, and the output shaft of the second motor 8 drives the active rod 9 to rotate. The active rod 9 is meshed with the outer gear ring 17 through the driving gear 10, so that the outer gear ring 17 can be driven to rotate. The outer gear ring 17 is meshed with the two transmission gears 16 to drive the positioning shaft 53 to rotate, and the positioning shaft 53 drives the lifting rod 61 to rotate. The lifting rod 61 is threadedly connected with the L-shaped connecting plate 62, so as to drive the cover The plate 4 is lifted and opened, and the rotating positioning shaft 53 drives the fan blades 54 to rotate. The fan blades 54 form air flow, so that the wind can be guided to the air guide box 51, and the wind is introduced into the annular positioning box 55 through the wind hole 573, and then introduced into the annular exhaust box 56 when the annular through hole 571 and the annular connecting hole 572 are connected to each other, so that the removed quartz drawn tube is blown and shaped through the air outlet 57. At the same time, the setting of the L-shaped clamping rod 58 can facilitate the positioning of the annular exhaust box 56, so that the annular exhaust box 56 can stably rotate on the annular positioning box 55.

[0058] Embodiment 2

[0059] The difference between this embodiment and the first embodiment is that two symmetrically arranged water tanks 13 are fixedly installed on the outer side of the furnace body 1, and two counterweight boxes 14 are fixedly installed on the top of the counterweight magnetic ring 22. A conduit 15 is installed on one side of the water tank 13, and the conduit 15 is connected to the corresponding counterweight box 14, and a metering valve is provided on the conduit 15. When it is necessary to increase the negative pressure in the furnace body 1, the water in the water tank 13 is introduced into the counterweight box 14 through the conduit 15, so that the weight of the counterweight magnetic ring 22 is increased, thereby increasing the negative pressure in the furnace body 1. At the same time, the weight of the counterweight box 14 can be controlled by the metering valve. All structures in this application can be selected in terms of material and length according to actual usage. The accompanying drawings are all schematic structural diagrams, and the specific actual dimensions can be appropriately adjusted.

[0060] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. An electric furnace gas pressure stabilizing device for quartz tube drawing production, characterized in that: include: Furnace body (1); A cover plate (4) is mounted on the top of the furnace body (1), and the top of the furnace body (1) is open; four symmetrically arranged support legs (11) are fixedly mounted on the bottom of the furnace body (1); a pad (12) is fixedly mounted on the bottom end of the support legs (11); four symmetrically arranged concave seats (38) are fixedly mounted on the outside of the furnace body (1); a first motor (36) is fixedly mounted on the bottom of one of the four concave seats (38); A voltage stabilizing mechanism (2) is installed on the outside of the furnace body (1); a sliding sleeve on the outside of the furnace body (1) is provided with a counterweight magnetic ring (22); and the counterweight magnetic ring (22) is drivingly connected to the voltage stabilizing mechanism (2); An adjusting mechanism (3) is installed on the outside of the furnace body (1), cooperates with the voltage stabilizing mechanism (2), and is drivingly connected to the first motor (36); An air guide mechanism (5) is mounted on the outside of the furnace body (1); a fixing plate (7) is fixedly mounted on the outside of the furnace body (1); a second motor (8) is fixedly mounted on the bottom of the fixing plate (7); an active rod (9) is fixedly mounted on the output shaft of the second motor (8); and the active rod (9) is drivingly connected to the air guide mechanism (5); The lifting mechanism (6) is installed on the furnace body (1) and is transmission-connected to the air guide mechanism (5) and the cover plate (4). The voltage stabilizing mechanism (2) comprises six air pumps (21). The six air pumps (21) are fixedly installed on the outside of the furnace body (1). A guide hole (25) is opened on one side of the air pump (21). The guide hole (25) is connected to the furnace body (1). The adjusting mechanism (3) comprises a magnetic pole top ring (31). The magnetic pole top ring (31) is slidably installed on the outside of the furnace body (1). The magnetic pole top ring (31) cooperates with the counterweight magnetic ring (22). Four symmetrically arranged positioning seats (32) are fixedly installed on the outside of the furnace body (1). A screw rod (33) is rotatably connected to the positioning seat (32). The four screw rods (33) are threadedly connected to the magnetic pole top ring (31).

2. The gas pressure stabilizing device for an electric furnace used in producing quartz tube drawing according to claim 1, characterized in that: A piston plate (23) is slidably connected to the inner wall of the vacuum cylinder (21), a pull rod (24) is fixedly mounted on the bottom of the piston plate (23), and the counterweight magnetic ring (22) is fixedly connected to the six pull rods (24).

3. The gas pressure stabilizing device for an electric furnace used in producing quartz tube drawing according to claim 1, characterized in that: The four concave seats (38) are rotatably connected to a same internal gear ring (34); a driven gear (35) is fixedly mounted on the bottom end of the screw rod (33); a driving gear (37) is fixedly mounted on the output shaft of the first motor (36); the driving gear (37) and the internal gear ring (34) are meshed with each other; and the internal gear ring (34) and the four driven gears (35) are meshed with each other.

4. The gas pressure stabilizing device for electric furnace used in producing quartz tube drawing according to claim 1, characterized in that: The air guide mechanism (5) comprises two air guide boxes (51), a mounting rod (52) being fixedly mounted on the inner wall of the air guide box (51), a positioning shaft (53) being rotatably connected to the mounting rod (52), a fan blade (54) being fixedly mounted on the positioning shaft (53), an air inlet being arranged at the bottom of the air guide box (51), and a grille (59) being arranged inside the air inlet.

5. The gas pressure stabilizing device for electric furnace used in producing quartz tube drawing according to claim 4, characterized in that: The tops of the two air guide boxes (51) are fixedly mounted with a same annular positioning box (55); the top of the annular positioning box (55) is rotatably connected with an annular exhaust box (56); a plurality of air outlets (57) are provided on the inner side of the annular exhaust box (56); the top of the annular positioning box (55) is provided with an annular through hole (571); the bottom of the annular exhaust box (56) is provided with an annular connecting hole (572); the annular through hole (571) and the annular connecting hole (572) are communicated with each other; and the top of the air guide box (51) is provided with an air hole (573); the air hole (573) and the annular positioning box (55) are communicated with each other.

6. The gas pressure stabilizing device for electric furnace used in producing quartz tube drawing according to claim 5, characterized in that: Six L-shaped clamping rods (58) are fixedly mounted on the top of the annular positioning box (55), and the six L-shaped clamping rods (58) are clamped and connected to the annular exhaust box (56).

7. The gas pressure stabilizing device for electric furnace used in producing quartz tube drawing according to claim 6, characterized in that: The lifting mechanism (6) comprises two L-shaped connecting plates (62), the two L-shaped connecting plates (62) are fixedly connected to the cover plate (4), a lifting rod (61) is fixedly mounted on the top end of the positioning shaft (53), the lifting rod (61) is threadedly connected to the L-shaped connecting plates (62), and the top ends of the two lifting rods (61) are rotatably connected to the same top plate (63).

8. The gas pressure stabilizing device for electric furnace used in producing quartz tube drawing according to claim 7, characterized in that: A driving gear (10) is fixedly mounted on the top end of the active rod (9), an outer gear ring (17) is fixedly mounted on the outer side of the annular exhaust box (56), the driving gear (10) and the outer gear ring (17) are meshed with each other, and a transmission gear (16) is fixedly mounted on the positioning shaft (53), the transmission gear (16) and the outer gear ring (17) are meshed with each other.

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