Medium borosilicate glass cold start electric melting kiln

Abstract

The invention discloses a medium borosilicate glass cold start electric melting kiln, and relates to the technical field of cold start electric melting kilns, the medium borosilicate glass cold start electric melting kiln comprises an electric melting kiln main body, the top surface and the upper side of the inner wall of the electric melting kiln main body are respectively provided with an air suction groove and an air guide groove, and the lower side of the interior of the air suction groove is fixedly provided with a filter screen plate; a connecting cylinder is fixedly mounted at the center of the top surface of the filter screen plate, a rotating mechanism is arranged on the inner wall of the connecting cylinder, a sealing cover is fixedly mounted on the upper side of the inner wall of the air suction groove through bolts, and a limiting ring is fixedly connected to the lower side of the inner wall of the air guide groove. Through the elastic force of the extrusion springs, the pressure relief effect can be guaranteed when the pressure in the electric melting kiln body is too high, air flow is used for driving the fan blades to rotate while pressure relief is conducted, then the filter screen plate is cleaned through the brush plate, the problem that the filter structure is blocked by particles is solved, and the service life of the electric melting kiln is prolonged. And the quality and the use safety of borosilicate glass in the processing process of the device are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cold-start electric melting furnaces, and in particular to a medium-borosilicate glass cold-start electric melting furnace. Background Art

[0002] A cold start electric melting furnace is an electric melting furnace that does not require preheating. The electric melting furnace uses electricity as a heat source to melt glass. The molten glass can be medium-borosilicate glass. The cold start electric melting furnace used to melt medium-borosilicate glass is also called a medium-borosilicate glass cold start electric melting furnace.

[0003] In the process of melting the borosilicate glass in the cold-start electric melting furnace, in order to increase the strength and heat resistance of the borosilicate glass after melting, it is necessary to increase the pressure in the electric melting furnace to rearrange the borosilicate glass molecules and form a denser structure, thereby improving the strength and heat resistance of the glass; However, when the electric melting furnace is pressurized, the melting of the medium-borosilicate glass will also produce gas, which will make it difficult to control the internal air pressure of the electric melting furnace, which will affect the overall quality of the melting of the medium-borosilicate glass. In addition, waste gas and particulate matter will be generated in the process of melting the medium-borosilicate glass. Traditional electric melting furnaces have the function of filtering and treating these particulate matter. Since the filtering structure is arranged in the electric melting furnace, it will lead to the inconvenience of cleaning its structure, which may cause the filtering structure to be blocked and affect the normal discharge of the gas, and then cause the internal gas of the electric melting furnace to overflow, affecting the safe use of the electric melting furnace. Summary of the invention

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A medium borosilicate glass cold-start electric melting furnace comprises an electric melting furnace body, wherein the top surface and the upper side of the inner wall of the electric melting furnace body are respectively provided with an air suction groove and an air guide groove; A filter screen is fixedly installed on the lower side of the air suction groove, a connecting cylinder is fixedly installed at the center of the top surface of the filter screen, a rotating mechanism is provided on the inner wall of the connecting cylinder, a sealing cover is fixedly installed on the upper side of the inner wall of the air suction groove by bolts, a limiting ring is fixedly connected to the lower side of the inner wall of the air guide groove, and a plurality of pressure relief mechanisms are arranged in a circular row on the upper side of the inner wall of the air guide groove; The pressure relief mechanism includes a vertical guide rod fixedly installed on the upper side of the inner wall of the air guide groove, the rod walls of several corresponding vertical guide rods are slidably connected with a positioning circular plate, the lower ends of several vertical guide rods are commonly provided with a sealing circular plate, the rod walls of the vertical guide rods are sleeved with an extrusion spring, an extrusion mechanism is provided at the center of the top surface of the positioning circular plate, and a plurality of air guide ports are opened on the peripheral side of the inner wall of the air guide groove.

[0005] Furthermore, the extrusion mechanism includes two fixed vertical blocks fixedly mounted on the top surface of the positioning circular plate and a roller shaft installed between the two fixed vertical blocks. A trapezoidal square rod is provided on the left side of the inner wall of the air guide groove above the positioning circular plate, and an adjusting screw is threadedly mounted on the left end of the trapezoidal square rod.

[0006] Further, the rotating mechanism comprises a rotating rod rotatably connected to the inner wall of the connecting tube, brush plates are fixedly installed on opposite sides of the rotating rod wall, tension springs are fixedly installed on opposite sides of the top surfaces of the two brush plates, and a clamping mechanism is provided at the upper end of the rotating rod; The clamping mechanism includes a clamping round block installed at the upper end of the rotating rod, and a plurality of ball bearings are embedded in the top surface of the clamping round block through a connecting block. A plurality of fan blades are installed in a circular row at the center of the bottom surface of the sealing cover through a fixed vertical rod. A clamping round groove block matching the connecting block is fixedly installed at the lower end of the fixed vertical rod. The wall of the connecting cylinder is located on the upper side of the filter screen plate and is clamped with an activated carbon plate.

[0007] Furthermore, the surface of the positioning circular plate is fixedly mounted on the inner wall of the air guide groove, the upper and lower ends of several of the extrusion springs are respectively in contact with the bottom surface of the positioning circular plate and the top surface of the sealing circular plate, the inclined end surface of the trapezoidal square rod is in contact with the shaft wall of the roller shaft, the upper ends of the two tension springs are fixedly mounted on the bottom surface of the filter mesh plate, the lower ends of several of the vertical guide rods are fixedly connected to the top surface of the limit ring, and the rod walls of several of the vertical guide rods are arranged through the sealing circular plate.

[0008] Furthermore, the air suction groove and the air guide groove are arranged in the same vertical direction, and the setting height of the positioning circular plate is higher than the height of the limiting ring and higher than five times the thickness of the limiting ring.

[0009] Furthermore, the rod walls of several of the vertical guide rods are arranged to penetrate the positioning circular plate, so that the positioning circular plate moves on the rod walls of the vertical guide rods, and the diameter of the sealing circular plate, the diameter of the positioning circular plate, and the outer diameter of the limiting ring are arranged in a ratio of 0.8:1:1. Through the different settings of the diameter of the sealing circular plate, the diameter of the positioning circular plate, and the outer diameter of the limiting ring, it can be ensured that after the gas passes through the limiting ring, it enters the air suction groove along the air guide port in the air guide groove, thereby ensuring the gas discharge and filtering and purification effect. Through the discharge of the gas, it can be avoided that the air pressure in the main body of the electric melting furnace is too high and affects the reaction quality of the borosilicate glass inside it, thereby ensuring the use effect of the main body of the electric melting furnace.

[0010] Furthermore, the plurality of gas guide ports are all arranged as L-shaped circular ports, and the positions of the plurality of gas guide ports are staggered with the positions of the plurality of vertical guide rods. The circular L-shaped circular ports can avoid the problem of residual gas impurities inside and can ensure smooth gas transportation.

[0011] Furthermore, the left end of the trapezoidal square rod is a vertical plane, the right end is an inclined surface, and the surface of the trapezoidal square rod passes through the main body of the electric melting furnace. The adjusting screw is a combined structure of a horizontal screw and a fixed round block at the left end, and the trapezoidal square rod is located between two corresponding vertical guide rods.

[0012] Furthermore, the two brush plates are arranged on the lower side of the filter mesh plate and are in contact with the bottom surface of the filter mesh plate. The activated carbon plate is a plate body with a circular hole in the middle. The activated carbon plate with holes can be better replaced to ensure the gas filtration of the main body of the electric melting furnace and reduce the subsequent gas purification cost.

[0013] Furthermore, an L-shaped air outlet pipe is installed on the right side of the top surface of the sealing cover, and a furnace door is rotatably installed on the right side of the front of the electric melting furnace body.

[0014] Technical effects and advantages of the present invention: The present invention can ensure the pressure relief effect when the pressure in the main body of the electric melting furnace is too high by squeezing the elastic force of the spring, and at the same time use the airflow to drive the fan blades to rotate, so that the brush plate cleans the filter screen plate, avoiding the problem of clogging of the filter structure caused by particles, and ensuring the quality and safety of borosilicate glass in the processing of the device.

[0015] The arrangement of the air suction groove and the air guide groove in the same vertical direction of the present invention can better adapt to the density difference and buoyancy of the gas, ensure that the gas smoothly drives the fan blades to rotate, and provide powerful power for cleaning the filter screen plate.

[0016] The present invention can ensure the stable vertical movement of the positioning circular plate by arranging a plurality of vertical guide rods in an annular arrangement, and can avoid the problem of the compression spring being tilted and deformed under pressure, thereby ensuring the normal use of the positioning circular plate.

[0017] The present invention utilizes the square rod wall setting of the trapezoidal square rod to ensure that the trapezoidal square rod will not rotate when the adjusting screw rod rotates, thereby ensuring the normal movement of the trapezoidal square rod. The trapezoidal square rod is arranged between two vertical guide rods, thereby ensuring the movement space of the vertical guide rods and ensuring the normal operation of the structure in the device.

[0018] The present invention can ensure that the gas that is not completely purified in the device is centrally introduced into the gas purification equipment by setting the L-shaped gas outlet pipe, and can ensure that no leakage of harmful gas will occur during the use of the device, thereby preventing harm to people around. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall vertical section three-dimensional structure of the present invention.

[0021] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0022] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure of part B in the middle.

[0023] Figure 5 It is a schematic diagram of the expanded structure of the clamping mechanism of the present invention.

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of part C in the middle.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the clamping circular groove block of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the trapezoidal square rod of the present invention.

[0027] In the figure: 1. Electric melting furnace body; 2. Air suction groove; 3. Air guide groove; 4. Sealing cover; 5. Limiting ring; 6. Vertical guide rod; 7. Positioning circular plate; 8. Extrusion spring; 9. Fixed vertical block; 10. Roller; 11. Trapezoidal square rod; 12. Adjusting screw; 13. Rotating rod; 14. Brush plate; 15. Tension spring; 16. Snap-on circular block; 17. Connecting block; 18. Ball bearing; 19. Filter screen plate; 20. Connecting cylinder; 21. Fixed vertical rod; 22. Fan blade; 23. Snap-on circular groove block; 24. L-shaped air outlet; 25. Furnace door; 26. Activated carbon plate; 27. Sealing circular plate; 28. Air guide port. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] like Figure 1-8 As shown, a medium borosilicate glass cold-start electric melting furnace comprises an electric melting furnace body 1, and an air suction groove 2 and an air guide groove 3 are respectively provided on the top surface and the upper side of the inner wall of the electric melting furnace body 1; A filter screen plate 19 is fixedly installed on the lower side of the air suction groove 2, a connecting tube 20 is fixedly installed at the center of the top surface of the filter screen plate 19, and a rotating mechanism is provided on the inner wall of the connecting tube 20. A sealing cover 4 is fixedly installed on the upper side of the inner wall of the air suction groove 2 by bolts, a limiting ring 5 is fixedly connected to the lower side of the inner wall of the air guide groove 3, and a plurality of pressure relief mechanisms are arranged in a circular row on the upper side of the inner wall of the air guide groove 3; The pressure relief mechanism includes a vertical guide rod 6 fixedly installed on the upper side of the inner wall of the air guide groove 3, and the rod walls of several corresponding vertical guide rods 6 are slidably connected with a positioning circular plate 7. The lower ends of several vertical guide rods 6 are jointly provided with a sealing circular plate 27, and the rod wall of the vertical guide rod 6 is sleeved with an extrusion spring 8. The extrusion force of the extrusion spring 8 can control the pressure relief operation when the pressure in the electric melting furnace body 1 is too large. Before the pressure relief, the borosilicate glass inside the electric melting furnace body 1 reacts to release gas, which can gradually increase the air pressure in the electric melting furnace body 1. In this process, the borosilicate glass in the electric melting furnace body 1 completes a full reaction during the pressurization process. When the pressure in the electric melting furnace body 1 is too high, the pressure in the electric melting furnace body 1 is too high. When the pushing limit force of the plurality of extrusion springs 8 is reached, the air pressure will push the sealing circular plate 27, so that the plurality of extrusion springs 8 will contract, and the gas will enter the air guide groove 3 through the limit ring 5, and enter the air suction groove 2 through the air guide port 28 in the air guide groove 3. Under the push of the air pressure, the fan blade 22 can rotate, thereby driving the structure to rotate, and the rotation of the fan blade 22 will also form a suction force from bottom to top in the air suction groove 2, which can better ensure the extraction of the gas in the air guide port 28, and perform a simple purification treatment on it, and finally introduce it into other gas collection devices through the L-shaped air outlet pipe 24, so as to avoid the leakage of harmful gases and ensure the safe use of the electric melting furnace body 1; The contraction process of the plurality of extrusion springs 8 can ensure the pressure relief state of the gas in the electric melting furnace body 1. When the gas pressure in the electric melting furnace body 1 becomes small and the plurality of extrusion springs 8 cannot be lifted, the sealing circular plate 27 will move downward and fit with the limit ring 5 under the elastic force of the plurality of extrusion springs 8, so that the electric melting furnace body 1 is in a relatively sealed state again, and the full reaction of the borosilicate glass in the electric melting furnace body 1 is continued to be ensured. The center of the top surface of the positioning circular plate 7 is provided with an extrusion mechanism to guide A plurality of air guide ports 28 are provided on the circumferential side of the inner wall of the air duct 3. The extrusion mechanism includes two fixed vertical blocks 9 fixedly mounted on the top surface of the positioning circular plate 7 and a roller shaft 10 mounted between the two fixed vertical blocks 9. A trapezoidal square rod 11 is provided on the left side of the inner wall of the air duct 3 above the positioning circular plate 7. The inclined surface of the trapezoidal square rod 11 can provide different heights of support to the roller shaft 10 at different contacts on the inclined surface. Since the roller shaft 10 and the fixed vertical blocks 9 are fixed on the positioning circular plate 7, and the positioning circular plate 7 is closely fitted with the air duct 3, The roller shaft 10, the fixed vertical block 9, and the positioning circular plate 7 can only move in the vertical position of the air guide groove 3. Because the inclined surface of the trapezoidal square rod 11 contacts the shaft wall of the roller shaft 10, when the trapezoidal square rod 11 moves, the roller shaft 10 will move downward under the pressure of the inclined surface of the trapezoidal square rod 11. When the inclined surface of the trapezoidal square rod 11 is away from the roller shaft 10, the roller shaft 10 will be closely fitted to the trapezoidal square rod 11 under the elastic force of the extrusion springs 8, so that the trapezoidal square rod 11 can control the up and down movement of the positioning circular plate 7, and The trapezoidal square rod 11 is controlled to move by the adjusting screw 12, and the operator can control the up and down movement of the positioning circular plate 7 by adjusting the screw 12. The up and down movement of the positioning circular plate 7 can ensure that the tightening degree of the plurality of extrusion springs 8 is adjustable, so that the force of the pressure in the electric melting furnace body 1 pushing the sealing circular plate 27 can be controlled, so as to better ensure the processing of the medium borosilicate glass. The trapezoidal square rod 11 can avoid the problem of self-rotation when the adjusting screw 12 rotates. The left end of the trapezoidal square rod 11 is threadedly installed with the adjusting screw 12; The rotating mechanism includes a rotating rod 13 rotatably connected to the inner wall of the connecting tube 20, and a brush plate 14 is fixedly installed on the opposite side of the rod wall of the rotating rod 13, and a tension spring 15 is fixedly installed on the opposite side of the top surface of the two brush plates 14. The tension spring 15 can ensure that the brush plate 14 is better fitted with the filter screen plate 19 to ensure the cleaning effect of the filter screen plate 19, and the tension spring 15 can ensure that after the activated carbon plate 26 is replaced, the fan blade 22 can drive the fixed vertical rod 21 to rotate without aligning the clamping circular groove block 23 and the connecting block 17, because the ball 18 can be in rotational contact with the surface of the clamping circular groove block 23, so that when the connecting block 17 is clamped with the inner wall of the clamping circular groove block 23, it can drive the fixed vertical rod 21 to rotate, and the upper end of the rotating rod 13 is provided with a clamping mechanism; The clamping mechanism includes a clamping round block 16 installed on the upper end of the rotating rod 13, and a plurality of balls 18 are embedded in the top surface of the clamping round block 16 through the connecting block 17. The balls 18 can ensure the rotational connection effect between the connecting block 17 and the clamping circular groove block 23, and reduce the friction between the connecting block 17 and the clamping circular groove block 23, so that before the connecting block 17 is embedded in the inner wall of the clamping circular groove block 23, a rotational contact operation can be performed. A plurality of fan blades 22 are installed in a circular array at the center of the bottom surface of the sealing cover 4 through a fixed vertical rod 21, and a clamping circular groove block 23 matching the connecting block 17 is fixedly installed at the lower end of the fixed vertical rod 21. The wall of the connecting cylinder 20 is located on the upper side of the filter screen plate 19 and is clamped with an activated carbon plate 26.

[0030] like Figure 2-7 As shown, in some embodiments, the surface of the positioning circular plate 7 is fixedly installed with the inner wall of the air guide groove 3, the upper and lower ends of a plurality of extrusion springs 8 are respectively in contact with the bottom surface of the positioning circular plate 7 and the top surface of the sealing circular plate 27, the inclined end surface of the trapezoidal square rod 11 is in contact with the shaft wall of the roller shaft 10, the upper ends of the two tension springs 15 are fixedly installed with the bottom surface of the filter screen plate 19, the lower ends of a plurality of vertical guide rods 6 are fixedly connected with the top surface of the limit ring 5, the rod walls of a plurality of vertical guide rods 6 are all arranged through the sealing circular plate 27, and the air suction groove 2 and the air guide groove 3 are arranged on the same vertical The setting height of the positioning circular plate 7 is higher than the height of the limiting ring 5, and higher than five times the thickness of the limiting ring 5. The rod walls of the plurality of vertical guide rods 6 are arranged to penetrate the positioning circular plate 7, so that the positioning circular plate 7 moves on the rod wall of the vertical guide rod 6. The diameter of the sealing circular plate 27, the diameter of the positioning circular plate 7, and the outer diameter of the limiting ring 5 are arranged in a ratio of 0.8:1:1. The diameter of the sealing circular plate 27 is smaller than the outer diameter of the limiting ring 5, so that after the sealing circular plate 27 is away from the limiting ring 5, the gas can enter the air guide groove 3 through the air guide port 28; The plurality of air guide ports 28 are all L-shaped circular ports, and the positions of the plurality of air guide ports 28 are staggered with the positions of the plurality of vertical guide rods 6. The left end of the trapezoidal square rod 11 is a vertical plane, and the right end is an inclined plane. The surface of the trapezoidal square rod 11 penetrates the main body 1 of the electric melting furnace. The adjusting screw 12 is a combination structure of a horizontal screw and a fixed round block at the left end. The trapezoidal square rod 11 is located between two corresponding vertical guide rods 6. The two brush plates 14 are both arranged on the lower side of the filter screen plate 19 and are in contact with the bottom surface of the filter screen plate 19. The activated carbon plate 26 is a middle opening. A plate body is provided with a circular hole, and an L-shaped air outlet pipe 24 is installed on the right side of the top surface of the sealing cover 4. The setting of the L-shaped air outlet pipe 24 is convenient for connection with other gas collection and purification equipment, and will not increase the space occupied by the electric melting furnace main body 1, and is convenient for the use of the electric melting furnace main body 1. A furnace door 25 is rotatably installed on the right side in front of the electric melting furnace main body 1. The furnace door 25 can ensure the relative sealing of the inside of the electric melting furnace main body 1, and can make the medium-borosilicate glass in the electric melting furnace main body 1 fully react, ensuring that the molecules of the medium-borosilicate glass are rearranged and form a denser structure.

[0031] Working principle of the present invention: When the device is used, the medium borosilicate glass is placed in a crucible and placed together in the electric melting furnace body 1, and the electric melting furnace body 1 is used to electrically heat and melt the medium borosilicate glass, so that the medium borosilicate glass is melted normally; During the melting process of the medium borosilicate glass, gas will be generated, which will cause a certain pressure inside the electric melting furnace body 1. During this process, the medium borosilicate glass in the electric melting furnace body 1 will be fully reacted to meet the processing requirements. As the processing continues, the air pressure inside the electric melting furnace body 1 will gradually increase. When the air pressure reaches a level that can push the sealing circular plate 27 away from the limiting ring 5, the air pressure in the electric melting furnace body 1 will be relieved, and the gas will be introduced into the air guide groove 3 through the air guide port 28, so that the gas will drive the fan blade 22 to rotate, thereby generating a certain suction force, which can better transport the gas to the L-shaped air outlet pipe 24. While the fan blade 22 rotates, it will drive the rotating rod 13 under the connecting block 17 to rotate through the clamping circular groove block 23, so that the brush plate 14 cleans the filter screen plate 19. When the air pressure decreases and cannot reach the level of pushing the extrusion spring 8, the extrusion spring 8 will squeeze the sealing circular plate 27 to fit the limiting ring 5, thereby ensuring that the electric melting furnace body 1 forms a relatively sealed environment; The squeezing spring 8 can be adjusted during operation. The adjusting screw 12 is rotated to drive the trapezoidal square rod 11 to move, so that the trapezoidal square rod 11 will squeeze or move away from the roller shaft 10 at the inclined position, so that the positioning circular plate 7 will squeeze or move away from the squeezing spring 8. In this way, the tightness of the squeezing spring 8 can be adjusted, and the thrust of pushing the sealing circular plate 27 in the electric melting furnace body 1 can also be adjusted.

[0032] The present invention highlights the innovative structure and does not elaborate on the existing mature technologies and structures.

[0033] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A medium borosilicate glass cold start electric melting furnace, comprising an electric melting furnace body (1), characterized in that: The top surface and the upper side of the inner wall of the electric melting furnace body (1) are respectively provided with air suction grooves (2) and air guide grooves (3); A filter screen plate (19) is fixedly mounted on the lower side of the air suction groove (2), a connecting tube (20) is fixedly mounted at the center of the top surface of the filter screen plate (19), a rotating mechanism is provided on the inner wall of the connecting tube (20), a sealing cover (4) is fixedly mounted on the upper side of the inner wall of the air suction groove (2) by means of bolts, a limiting ring (5) is fixedly connected to the lower side of the inner wall of the air guide groove (3), and a plurality of pressure relief mechanisms are arranged in a circular pattern on the upper side of the inner wall of the air guide groove (3); The pressure relief mechanism comprises a vertical guide rod (6) fixedly mounted on the upper side of the inner wall of the air guide groove (3); the rod walls of a plurality of corresponding vertical guide rods (6) are slidably connected to a positioning circular plate (7); the lower ends of the plurality of vertical guide rods (6) are provided with a sealing circular plate (27); the rod walls of the vertical guide rods (6) are sleeved with an extrusion spring (8); an extrusion mechanism is provided at the center of the top surface of the positioning circular plate (7); and a plurality of air guide ports (28) are provided on the circumferential side of the inner wall of the air guide groove (3).

2. A medium borosilicate glass cold start electric melting furnace according to claim 1, characterized in that: The squeezing mechanism comprises two fixed vertical blocks (9) fixedly mounted on the top surface of the positioning circular plate (7) and a roller shaft (10) mounted between the two fixed vertical blocks (9); a trapezoidal square rod (11) is provided on the left side of the inner wall of the air guide groove (3) above the positioning circular plate (7); an adjusting screw rod (12) is threadedly mounted on the left end of the trapezoidal square rod (11).

3. A medium borosilicate glass cold start electric melting furnace according to claim 2, characterized in that: The rotating mechanism comprises a rotating rod (13) rotatably connected to the inner wall of the connecting tube (20), brush plates (14) are fixedly mounted on opposite sides of the rod wall of the rotating rod (13), tension springs (15) are fixedly mounted on opposite sides of the top surfaces of the two brush plates (14), and a clamping mechanism is provided at the upper end of the rotating rod (13); The clamping mechanism comprises a clamping round block (16) mounted on the upper end of the rotating rod (13); a plurality of balls (18) are embedded in the top surface of the clamping round block (16) via a connecting block (17); a plurality of fan blades (22) are mounted in a circular arrangement at the center of the bottom surface of the sealing cover (4) via a fixed vertical rod (21); a clamping round groove block (23) matching the connecting block (17) is fixedly mounted on the lower end of the fixed vertical rod (21); and an activated carbon plate (26) is clamped on the wall of the connecting cylinder (20) located on the upper side of the filter screen plate (19).

4. A medium borosilicate glass cold start electric melting furnace according to claim 3, characterized in that: The surface of the positioning circular plate (7) is fixedly mounted on the inner wall of the air guide groove (3); the upper and lower ends of the plurality of extrusion springs (8) are respectively in contact with the bottom surface of the positioning circular plate (7) and the top surface of the sealing circular plate (27); the inclined end surface of the trapezoidal square rod (11) is in contact with the shaft wall of the roller shaft (10); the upper ends of the two tension springs (15) are fixedly mounted on the bottom surface of the filter screen plate (19); the lower ends of the plurality of vertical guide rods (6) are fixedly connected to the top surface of the limit ring (5); and the rod walls of the plurality of vertical guide rods (6) are arranged to penetrate the sealing circular plate (27).

5. The medium borosilicate glass cold start electric melting furnace according to claim 1, characterized in that: The air suction groove (2) and the air guide groove (3) are arranged in the same vertical direction, and the arrangement height of the positioning circular plate (7) is higher than the height of the limiting ring (5) and higher than five times the thickness of the limiting ring (5).

6. A medium borosilicate glass cold start electric melting furnace according to claim 1, characterized in that: The rod walls of the plurality of vertical guide rods (6) are arranged to penetrate the positioning circular plates (7), so that the positioning circular plates (7) move on the rod walls of the vertical guide rods (6); the diameter of the sealing circular plate (27), the diameter of the positioning circular plate (7), and the outer diameter of the limiting ring (5) are arranged in a ratio of 0.8:1:

1.

7. The medium borosilicate glass cold start electric melting furnace according to claim 1, characterized in that: The plurality of air guide ports (28) are all arranged as L-shaped circular ports, and the positions of the plurality of air guide ports (28) and the positions of the plurality of vertical guide rods (6) are arranged in a staggered manner.

8. The medium borosilicate glass cold start electric melting furnace according to claim 2, characterized in that: The left end of the trapezoidal square rod (11) is a vertical plane, and the right end is an inclined surface. The surface of the trapezoidal square rod (11) penetrates the electric melting furnace body (1). The adjusting screw rod (12) is a combined structure of a horizontal screw rod and a fixed round block at the left end. The trapezoidal square rod (11) is located between two corresponding vertical guide rods (6).

9. The medium borosilicate glass cold start electric melting furnace according to claim 3, characterized in that: The two brush plates (14) are both arranged on the lower side of the filter screen plate (19) and are in contact with the bottom surface of the filter screen plate (19); the activated carbon plate (26) is a plate body with a circular hole in the middle.

10. The medium borosilicate glass cold start electric melting furnace according to claim 1, characterized in that: An L-shaped air outlet pipe (24) is installed on the right side of the top surface of the sealing cover (4), and a furnace door (25) is rotatably installed on the right side of the front of the electric melting furnace body (1).

Images