Preheating equipment for producing characteristic glass

Abstract

The invention relates to the technical field of glass processing equipment, in particular to preheating equipment for producing characteristic glass. Comprising a support; the outer wall of the bottom of the thermal insulation furnace box is fixedly connected with the outer wall of the top of the bracket; the outer wall of the heating wire is fixedly connected with the side wall in the thermal insulation furnace box; the outer wall of the conveying belt is rotationally connected with the inner wall of the bracket through a rolling roller; the outer wall of the ventilation device is fixedly connected with the outer wall of the bracket; the input end of the circulating fan is fixedly connected with the outer wall of the ventilation device; the outer wall of the conveying device is fixedly connected with the output end of the circulating fan; the ventilation rate in the thermal insulation furnace box can be controlled by arranging the ventilation device composed of the opening and closing device and the receding device, part of high-temperature air can pass through the through groove to be located below the glass through the receding device, and in the gradual moving process of the glass, the bottom of the glass is subjected to preheating treatment as well; and the purpose of uniformly heating the glass is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of glass processing equipment, and in particular to a preheating device for producing characteristic glass. Background Art

[0002] In the production process of characteristic glass, the preheating link is crucial. Traditional glass preheating equipment often has some problems, such as insufficient preheating of the bottom of the glass, resulting in uneven heating of the glass, affecting product quality; it is difficult to effectively control the ventilation rate in the furnace, resulting in uneven temperature field, local temperature is too high or too low, reducing preheating efficiency; some equipment does not preheat the newly entered air circulation, which is easy to cause the air temperature in the furnace to drop suddenly, causing uneven heating of the glass; in the air circulation, impurities are easy to block the filter device, affecting the air circulation and preheating effect.

[0003] The present invention sets a ventilation device, wherein the yield device allows part of the high-temperature air to be under the glass to preheat the bottom of the glass, and the opening and closing device allows the hot air to pass through the bottom of the glass more frequently to ensure that the bottom is heated evenly and avoid hot air concentration. At the same time, the ventilation device can control the ventilation rate in the insulation furnace box, allowing the circulating fan to circulate and transport the hot air, making the temperature field in the furnace more uniform, improving the preheating efficiency and quality, and optimizing the preheating process. The transmission device can preheat the newly entered air circulation to prevent the sudden drop in the air temperature in the furnace and reduce the quality degradation caused by uneven heating of the glass. The rotating device can prevent the filter wire mesh from being blocked, ensuring smooth airflow, and the scraped impurities can be cleaned after the cycle is completed. The present invention provides an efficient and reliable preheating solution for the production of characteristic glass. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention solves the technical problems by adopting the following technical solutions: a preheating device for producing characteristic glass, comprising: a support; an insulating furnace box, wherein the outer wall of the bottom of the insulating furnace box is fixedly connected to the outer wall of the top of the support; a heating wire, wherein the outer wall of the heating wire is fixedly connected to the side wall inside the insulating furnace box; a conveyor belt, wherein the outer wall of the conveyor belt is rotatably connected to the inner wall of the support through a rolling roller; a ventilation device, wherein the outer wall of the ventilation device is fixedly connected to the outer wall of the support; a circulating fan, wherein the input end of the circulating fan is fixedly connected to the outer wall of the ventilation device; a transmission device, wherein the outer wall of the transmission device is fixedly connected to the output end of the circulating fan ; The ventilation device includes a giving way device, and the outer wall of the giving way device is slidably connected with an opening and closing device; the giving way device includes a fixed frame, the outer wall of the top of the fixed frame is symmetrically provided with placement blocks, the outer wall of the placement block is fixedly connected to the limiting frame, the outer wall of the placement block is fixedly connected with a cross connection block, the outer wall of the cross connection block is symmetrically provided with positioning blocks, the side of the positioning block away from the connecting end of the cross connection block is fixedly connected with a fitting block, a through groove is opened in the wall of the cross connection block, the giving way device allows part of the high-temperature air to be under the glass through the through groove, and the bottom of the glass is also preheated during the gradual movement of the glass.

[0005] Preferably, one end of the fitting block away from the positioning block is fixedly connected to the inner wall of the bracket, the side wall of the fixing frame and the outer wall of the limiting frame are fixedly connected to the side wall inside the bracket, and the inner wall of the fixing frame is fixedly connected to the outer wall of the cross connecting block.

[0006] Preferably, the opening and closing device includes a DC motor, an output end of the DC motor is fixedly connected to a driving gear, a bidirectional screw is symmetrically arranged on the outside of the driving gear, an end of the bidirectional screw close to the DC motor is fixedly connected to a driven gear, an outer surface of the bidirectional screw is threadedly connected to a sliding plate, an outer wall of the bottom of the sliding plate is fixedly connected to a protruding block, an outer wall of the protruding block is rotatably connected to a connecting rod, an end of the connecting rod away from the protruding block is rotatably connected to a limiting frame, an outer wall of the limiting frame is fixedly connected to a connecting head, and a bellows is fixedly connected to the bottom of the connecting head, the opening and closing device allows hot air to pass through the bottom of the glass more frequently, so that the bottom of the glass is heated evenly, avoiding the concentration of hot air at the bottom.

[0007] Preferably, the outer wall of the bellows is fixedly connected to the input end of the circulating fan, the outer wall of the bottom of the DC motor is fixedly connected to the outer wall of the bracket, the side of the driven gear away from the bidirectional screw is rotatably connected to the outer wall of the bracket, the side of the bidirectional screw away from the driven gear is rotatably connected to the inner wall of the bracket, the outer wall of the bottom of the sliding plate is slidably connected to the outer wall of the cross connecting block through a through groove, and the side wall of the sliding plate is slidably connected to the side wall inside the bracket. The ventilation device composed of an opening and closing device and a giving way device can control the ventilation rate in the insulation furnace box, avoid the situation where the local temperature is too high or too low, improve the preheating efficiency and quality, and control the temperature change in the furnace by adjusting whether to ventilate, thereby optimizing the preheating effect and preheating process flow.

[0008] Preferably, the transmission device includes an input pipe, the inner wall of the input pipe is fixedly connected to an external pipe, the end of the external pipe close to the input pipe is fixedly connected to a connecting pipe, the outer wall of the connecting pipe is rotatably connected to a rotating device, the outer wall of the top of the connecting pipe is plugged into an inner conveying pipe, the outer wall of the inner conveying pipe is fixedly connected to a plug-in pipe, and the inner wall of the plug-in pipe is fixedly connected to a filter wire mesh.

[0009] Preferably, the input pipe includes a bent pipe, the outer wall of the bent pipe is fixedly connected to the output end of the circulating fan, the outer wall of the bent pipe at one end away from the circulating fan is fixedly connected to a receiving ring, the side wall inside the bent pipe is fixedly connected to a guide ring, the side wall outside the bent pipe is fixedly connected to the inner wall of the bracket, the inner wall of the bent pipe is fixedly connected to the outer wall of the external pipe, the connecting pipe includes a straight pipe, the side wall outside the straight pipe is fixedly connected to a supporting ring, the outer wall of the bottom of the straight pipe is fixedly connected to the outer wall of the external pipe, the transmission device preheats the new air entering the circulation, and heats the air by heating the connecting pipe and the inner delivery pipe, so that the air temperature in the furnace is difficult to drop suddenly, reducing the degradation of product quality caused by uneven heating of the glass.

[0010] Preferably, the rotating device includes a rotating cylinder, the side wall outside the rotating cylinder is fixedly connected with a spiral blade, the top of the spiral blade is provided with a scraper, the outer wall of the top of the scraper is slidably connected with the outer wall of the bottom of the filter wire mesh, the outer wall of the scraper is fixedly connected to the outer wall of the rotating cylinder, the side wall inside the rotating cylinder is rotatably connected with the outer wall of the straight pipe, the outer wall of the bottom of the rotating cylinder is rotatably connected with the outer wall of the top of the supporting ring, and a rotating device is provided to prevent the filter wire mesh from being blocked, and the scraped impurities will be sent to the side wall of the hot air pipe by the rotating scraper, and fall due to gravity after the cycle is completed, and be guided by the guide ring to the receiving ring position to wait for removal of the plug-in tube for cleaning.

[0011] Preferably, the plug-in tube includes a hot air duct, the inner side wall of the hot air duct is fixedly connected to a limiting ring, the outer side wall of the hot air duct is fixedly connected to a sealing cover, the end of the hot air duct away from the sealing cover is fixedly connected to a fixing block, the sealing cover is plugged into the receiving ring, the outer wall of the limiting ring and the inner side wall of the hot air duct are fixedly connected to the outer wall of the filter wire mesh, the outer wall of the hot air duct is fixedly connected to the inner wall of the insulation furnace box, the inner conveying pipe includes an inner tube, the outer wall of the inner tube is fixedly connected to an insertion ring, the outer wall of the insertion ring is plugged into the side wall of the inner side of the straight tube, and the end of the inner tube away from the insertion ring is fixedly connected to the outer wall of the fixing block.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention provides a yielding device in the ventilation device so that part of the high-temperature air can pass through the through groove and be located under the glass. In the process of the glass gradually moving, the bottom of the glass is also preheated.

[0013] 2. The present invention provides an opening and closing device to allow hot air to pass through the bottom of the glass more frequently, so that the bottom of the glass is heated evenly, thereby avoiding the concentration of hot air at the bottom.

[0014] 3. The present invention can control the ventilation rate in the insulation furnace box by arranging a ventilation device composed of an opening and closing device and a yielding device, so that the circulating fan can circulate the hot air in the furnace, thereby making the temperature field in the furnace more uniform, avoiding the situation where the local temperature is too high or too low, and improving the preheating efficiency and quality. By adjusting whether to ventilate to control the temperature change in the furnace, the preheating effect and preheating process flow are optimized.

[0015] 4. The present invention preheats the newly circulating air by arranging a transmission device, and heats the air by heating the connecting pipe and the inner conveying pipe, thereby making it difficult for the air temperature in the furnace to drop suddenly, thereby reducing the degradation of product quality caused by uneven heating of the glass.

[0016] 5. The present invention provides a rotating device to prevent the filter wire mesh from being blocked. During the air circulation process, some tiny impurities will be brought into the transmission device. If these impurities are not removed in time, the filter wire mesh may be blocked, affecting the circulation of the airflow, thereby reducing the preheating effect, making it difficult for the filter wire mesh to be blocked by impurities after filtering the air for a long time, avoiding heat concentration and air circulation blockage. The scraped impurities will be sent to the side wall of the hot air duct by the rotating scraper blade, and fall due to gravity after the cycle is completed, and will be guided by the guide ring to the receiving ring position to wait for removal of the plug-in tube for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the structure of the ventilation device of the present invention; Figure 4 It is a structural schematic diagram of the yielding device of the present invention; Figure 5 It is a structural schematic diagram of the opening and closing device of the present invention; Figure 6 It is a schematic diagram of the local structure of the bracket of the present invention; Figure 7 It is a schematic diagram of the structure of the transmission device of the present invention; Figure 8 It is a schematic diagram of the local structure of the bending pipe of the present invention; Fig. 9 yes Figure 8 A schematic diagram of the structure enlargement at the center A; Fig.10 It is a structural schematic diagram of the rotating device of the present invention.

[0018] In the figure: 1, bracket; 2, insulation furnace box; 3, heating wire; 4, conveyor belt; 5, circulating fan; 6, ventilation device; 7, transmission device; 61, giving way device; 62, opening and closing device; 611, fixing frame; 612, placing block; 613, limiting frame; 614, cross connection block; 615, positioning block; 616, fitting block; 617, through slot; 621, DC motor; 622, driving gear; 623, driven gear; 624, bidirectional screw; 625, sliding plate; 626, protruding block; 627, connecting rod; 628 , limit frame; 629, connecting head; 6210, bellows; 71, input pipe; 72, external pipe; 73, connecting pipe; 74, rotating device; 75, filter wire mesh; 76, plug-in pipe; 77, inner conveying pipe; 711, bending pipe; 712, guide ring; 713, receiving ring; 731, straight pipe; 732, supporting ring; 741, rotating cylinder; 742, spiral blade; 743, scraper; 761, hot air pipe; 762, limit ring; 763, sealing cover; 764, fixing block; 771, inner pipe; 772, insertion ring. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0020] Example: See Figure 1 - Fig.10 The present invention provides a technical solution: a preheating device for producing characteristic glass, comprising: a support 1; an insulating furnace box 2, the outer wall of the bottom of the insulating furnace box 2 is fixedly connected to the outer wall of the top of the support 1; a heating wire 3, the outer wall of the heating wire 3 is fixedly connected to the side wall inside the insulating furnace box 2; a conveyor belt 4, the outer wall of the conveyor belt 4 is rotatably connected to the inner wall of the support 1 through a rolling roller; a ventilation device 6, the outer wall of the ventilation device 6 is fixedly connected to the outer wall of the support 1; a circulating fan 5, the input end of the circulating fan 5 is connected to the outer wall of the ventilation device 6 The transmission device 7 is fixedly connected to the output end of the circulating fan 5; the ventilation device 6 includes a yielding device 61, and the outer wall of the yielding device 61 is slidably connected to the opening and closing device 62; the yielding device 61 includes a fixing frame 611, and the outer wall of the top of the fixing frame 611 is symmetrically provided with a placing block 612, and the outer wall of the placing block 612 is fixedly connected to the limiting frame 613, and the outer wall of the placing block 612 is fixedly connected to the cross connecting block 614, and the outer wall of the cross connecting block 614 is symmetrically provided with a positioning block 61 5. The side of the positioning block 615 away from the connection end of the cross connection block 614 is fixedly connected with a fitting block 616. A through slot 617 is provided in the wall of the cross connection block 614. The yielding device 61 mainly achieves yielding through the positioning block 615 and the fitting block 616. Two cylinders are provided on the positioning block 615 to change the running position of the conveyor belt 4, and the fitting block 616 prevents the conveyor belt 4 from detaching. This connection method makes the middle part of the conveyor belt 4 concave, and combined with the conveyor belts 4 set on both sides, it does not affect the conveyor belt 4. Under the condition that the conveyor belt 4 transports the glass, the cross connection block 614 can be set in the middle position of the conveyor belt 4 transportation area. Since the conveyor belt 4 uses Teflon material to prevent overheating and deformation, the temperature of the conveyor belt 4 is relatively low. Therefore, in the traditional preheating process, the glass is mostly preheated on one side. Some glass is prone to warping due to unilateral heat concentration. A cross connection block 614 is set in the device, and a through groove 617 is set on the cross connection block 614, so that some high-temperature air can pass through the through groove 617 and is under the glass.

[0021] The end of the fitting block 616 away from the positioning block 615 is fixedly connected to the inner wall of the bracket 1, the side wall of the fixing frame 611 and the outer wall of the limiting frame 613 are fixedly connected to the side wall inside the bracket 1, and the inner wall of the fixing frame 611 is fixedly connected to the outer wall of the cross connecting block 614.

[0022] The opening and closing device 62 includes a DC motor 621, the output end of the DC motor 621 is fixedly connected to a driving gear 622, and a bidirectional screw 624 is symmetrically arranged on the outside of the driving gear 622, and one end of the bidirectional screw 624 close to the DC motor 621 is fixedly connected to a driven gear 623, and the outer surface of the bidirectional screw 624 is threadedly connected to a sliding plate 625, and the outer wall of the bottom of the sliding plate 625 is fixedly connected to a protruding block 626, and the outer wall of the protruding block 626 is rotatably connected to a connecting rod 627, and the end of the connecting rod 627 away from the protruding block 626 is rotatably connected to a limit frame 628, and the outer wall of the limit frame 628 is fixedly connected to a connecting head 629, and the bottom of the connecting head 629 is fixedly connected to a bellows 6210. After the DC motor 621 in the opening and closing device 62 is started, it will drive the driving gear 622 to rotate, and the driving gear 62 2 is meshed with the driven gear 623, so that the bidirectional screw 624 rotates. When the bidirectional screws 624 on both sides rotate synchronously, the sliding plate 625 can be smoothly moved closer to or farther away from the axial direction of the bidirectional screw 624. Since the protruding block 626 at the bottom of the sliding plate 625 is connected to the limit frame 628 through the connecting rod 627, the sliding plate 625 is controlled to be relatively away from each other, so that the position of the through groove 617 is no longer blocked by the sliding plate 625. At this time, the connecting rod 627 will pull the movable limit frame 628 to move upward. Since the limit frame 628 is connected to the bellows 6210 through the connecting head 629, the limit frame 628 drives the connecting head 629 to rise and stretches the bellows 6210. The bellows 6210 is fixed to the input end of the circulating fan 5. At this time, turning on the circulating fan 5 can accelerate the flow of air inside the insulation furnace box 2.

[0023] The outer wall of the bellows 6210 is fixedly connected to the input end of the circulation fan 5, the outer wall of the bottom of the DC motor 621 is fixedly connected to the outer wall of the bracket 1, the side of the driven gear 623 away from the bidirectional screw 624 is rotationally connected to the outer wall of the bracket 1, the side of the bidirectional screw 624 away from the driven gear 623 is rotationally connected to the inner wall of the bracket 1, the outer wall of the bottom of the sliding plate 625 is slidingly connected to the outer wall of the cross connecting block 614 through the through groove 617, and the side wall of the sliding plate 625 is slidingly connected to the side wall inside the bracket 1. In the early stage of preheating, a smaller ventilation volume is required to quickly increase the temperature in the furnace, so that the temperature in the furnace quickly reaches the required temperature for preheating and the glass can be preheated. In the later stage of preheating, a larger ventilation volume is required to maintain the uniformity of the temperature in the furnace, avoiding the problem of excessively high temperature around the heating wire 3 or excessive local stability caused by the shape of the furnace. Therefore, at this time, the circulation fan 5 is used to promote the circulation of the airflow in the furnace to make the heat distribution more uniform.

[0024] The transmission device 7 includes an input pipe 71, the inner wall of the input pipe 71 is fixedly connected to an external pipe 72, one end of the external pipe 72 close to the input pipe 71 is fixedly connected to a connecting pipe 73, the outer wall of the connecting pipe 73 is rotatably connected to a rotating device 74, the outer wall of the top of the connecting pipe 73 is plugged with an inner delivery pipe 77, the outer wall of the inner delivery pipe 77 is fixedly connected to a plug-in pipe 76, the inner wall of the plug-in pipe 76 is fixedly connected to a filtering wire mesh 75, the input pipe 71 includes a bent pipe 711, a guide ring 712 and a receiving ring 713, the bent pipe 711 is fixedly connected to the output end of the circulating fan 5, and its bent shape can effectively guide the direction of the airflow, so that the airflow is guided to the plug-in pipe 76, and through the plug-in pipe 76 It smoothly enters the insulation furnace box 2. While the hot air is circulating, due to the openings on both sides of the insulation furnace box 2, some hot air will leak out while the air is heated and flowing. In order to maintain the pressure balance in the furnace, the furnace will inhale air from the outside air at this time. As the pressure in the furnace decreases, under the action of atmospheric pressure, the furnace will form a pipeline bridge to transport air through the internal conveying pipe 77, the connecting pipe 73 and the external pipe 72. At this time, the airflow output by the circulating fan 5 flows in the input pipe 71 and the plug-in pipe 76. The high-temperature and flowing gas is on the outer wall of the outside air, and the air is heated by heating the connecting pipe 73 and the internal conveying pipe 77, so that the air temperature in the furnace is difficult to drop suddenly.

[0025] The input pipe 71 includes a curved pipe 711, the outer wall of which is fixedly connected to the output end of the circulating fan 5, a receiving ring 713 is fixedly connected to the outer wall of the curved pipe 711 at one end away from the circulating fan 5, a guide ring 712 is fixedly connected to the inner side wall of the curved pipe 711, the outer side wall of the curved pipe 711 is fixedly connected to the inner wall of the bracket 1, the inner wall of the curved pipe 711 is fixedly connected to the outer wall of the external pipe 72, the connecting pipe 73 includes a straight pipe 731, the outer side wall of the straight pipe 731 is fixedly connected to the supporting ring 732, and the outer wall of the bottom of the straight pipe 731 is fixedly connected to the outer wall of the external pipe 72.

[0026] The rotating device 74 includes a rotating cylinder 741, and a spiral blade 742 is fixedly connected to the side wall outside the rotating cylinder 741. A scraper 743 is arranged on the top of the spiral blade 742. The outer wall of the top of the scraper 743 is slidably connected to the outer wall of the bottom of the filter wire mesh 75. The outer wall of the scraper 743 is fixedly connected to the outer wall of the rotating cylinder 741. The side wall inside the rotating cylinder 741 is rotatably connected to the outer wall of the straight pipe 731. The outer wall of the bottom of the rotating cylinder 741 is rotatably connected to the outer wall of the top of the supporting ring 732. The spiral blade 742 and the scraper 743 are fixed to the outer side wall of the rotating cylinder 741 of the rotating device 74. When the gas When the flow passes through the outside of the connecting pipe 73 and the inside of the curved pipe 711, the flowing airflow will drive the spiral blades 742 to rotate. The rotation of the spiral blades 742 not only enhances the disturbance of the airflow, making the heat transfer more uniform, but also uniformly heats the straight pipe 731. The straight pipe 731 on the connecting pipe 73 is connected to the rotating device 74 through the supporting ring 732. The supporting ring 732 not only provides support for the rotating device 74, but also enables the spiral blades 742 to drive the rotating cylinder 741 to rotate stably. In this process, the rotating scraper 743 will scrape the hot air pipe 761 and the filter wire mesh 75 fixed by the limiting ring 762.

[0027] The plug-in tube 76 includes a hot air pipe 761, the inner side wall of the hot air pipe 761 is fixedly connected to a limiting ring 762, the outer side wall of the hot air pipe 761 is fixedly connected to a sealing cover 763, the end of the hot air pipe 761 away from the sealing cover 763 is fixedly connected to a fixing block 764, the sealing cover 763 is plugged into the receiving ring 713, the outer wall of the limiting ring 762 and the inner side wall of the hot air pipe 761 are fixedly connected to the outer wall of the filtering wire mesh 75, the outer wall of the hot air pipe 761 is fixedly connected to the inner wall of the insulation furnace box 2, the inner conveying pipe 77 includes an inner tube 771, the outer wall of the inner tube 771 is fixedly connected to an insertion ring 772, the outer wall of the insertion ring 772 is plugged into the inner side wall of the straight tube 731, and the end of the inner tube 771 away from the insertion ring 772 is fixedly connected to the outer wall of the fixing block 764.

[0028] Working principle: The bracket 1 serves as the basic supporting structure of the entire equipment, providing a stable installation position for each component; the insulation furnace box 2 has good insulation performance and effectively reduces the degree of heat loss to the external environment, thereby ensuring that the temperature in the furnace can be stably maintained within a range suitable for glass preheating; the heating wires 3 in the insulation furnace box 2 are evenly distributed and can stably generate heat to preheat the glass in all directions; when in use, the conveyor belt 4 is stably connected to the rotation of the bracket 1 through the rolling roller, and during the glass preheating process, the rolling roller is powered so that the conveyor belt 4 can smoothly transport the glass into the furnace, so that the glass moves at a uniform speed, thereby ensuring the stability of the glass passing through the preheating area; The yielding device 61 in the ventilation device 6 is composed of multiple parts, wherein the fixing frame 611 is fixedly connected to the bracket 1, providing a stable support foundation for the entire yielding device 61, and the limiting frame 613 on the placing block 612 plays an important limiting role, which can limit the movement range of the conveyor belt 4 and the rolling roller and other components, thereby ensuring the stability and accuracy of the equipment operation. The yielding device 61 mainly achieves the yielding effect through the positioning block 615 and the bonding block 616, wherein the positioning block 615 is provided with two cylinders to change the running position of the conveyor belt 4, and the bonding block 616 prevents the conveyor belt 4 from detaching. This connection method makes the middle position of the conveyor belt 4 concave. The device is provided with a cross connection block 614, and the conveyor belts 4 are provided on both sides. Under the condition that the conveyor belts 4 do not affect the conveyor belts 4 in conveying the glass, the cross connection block 614 can be provided in the middle of the conveyor belt 4 conveying area. Since the conveyor belt 4 is made of Teflon material to prevent overheating and deformation, the temperature of the conveyor belt 4 is relatively low. Therefore, in the traditional preheating process, most of the glass is preheated on one side, and some of the glass is easy to warp due to the single-sided heat concentration. The cross connection block 614 is provided in the device, and a through groove 617 is provided on the cross connection block 614, so that some high-temperature air can pass through the through groove 617 and be under the glass. In the process of the glass gradually moving, the bottom of the glass is also preheated. After the DC motor 621 in the opening and closing device 62 is started, it will drive the driving gear 622 to rotate, and the driving gear 622 will mesh with the driven gear 623, so that the bidirectional screw 624 will rotate. When the bidirectional screws 624 on both sides rotate synchronously, the sliding plate 625 will smoothly move relatively close to or relatively away from the axial direction of the bidirectional screw 624. The through groove 617 on the cross connecting block 614 provides a precise sliding track for the sliding plate 625, ensuring that the sliding plate 625 can move smoothly on the specified path. The sliding plate 625 threadedly connected to the bidirectional screw 624 slides horizontally under the dual restrictions of the through groove 617 and the inner wall of the bracket 1, thereby ensuring that the moving direction of the sliding plate 625 is accurate and stable without deviation or shaking. In the case of a situation where the raised block 626 at the bottom of the sliding plate 625 is connected to the limit frame 628 through the connecting rod 627, the sliding plate 625 is controlled to be relatively far away, so that the position of the through slot 617 is no longer blocked by the sliding plate 625. At this time, the connecting rod 627 will pull the movable limit frame 628 to move upward. Since the limit frame 628 is connected to the bellows 6210 through the connecting head 629, the limit frame 628 drives the connecting head 629 to rise and stretches the bellows 6210. The bellows 6210 is fixed to the input end of the circulating fan 5. At this time, turning on the circulating fan 5 can accelerate the flow of air inside the temperature-insulating furnace box 2, thereby making the hot air pass through the bottom of the glass more frequently, so that the bottom of the glass is heated evenly, avoiding the concentration of hot air at the bottom. The ventilation device 6 composed of the opening and closing device 62 and the yielding device 61 can control the ventilation rate in the insulation furnace box 2. The opening and closing device 62 can control whether to ventilate according to actual needs. At different stages of glass preheating, the requirements for the temperature in the furnace and the temperature of the air flow are different. In the early stage of preheating, a smaller ventilation volume is required to quickly increase the temperature in the furnace, so that the temperature in the furnace quickly reaches the required temperature for preheating and the glass can be preheated. In the later stage of preheating, a larger ventilation volume is required to maintain the uniformity of the temperature in the furnace, avoiding excessively high temperatures around the heating wire 3 or local over-stabilization caused by the shape of the furnace. In order to solve the problem of high temperature, the circulating fan 5 is used to promote the circulation of the airflow in the furnace to make the heat distribution more uniform. During the glass preheating process, the heat needs to be evenly transferred to various parts of the glass to ensure the preheating quality of the glass. After the opening and closing device 62 is opened and closed, the input position of the circulating fan 5 is stably inserted into the through groove 617, so that the circulating fan 5 can circulate the hot air in the furnace, thereby making the temperature field in the furnace more uniform, avoiding the situation where the local temperature is too high or too low, and improving the preheating efficiency and quality. By adjusting whether to ventilate to control the temperature change in the furnace, the preheating effect and preheating process flow are optimized. The circulation fan 5 plays a key role in the device. Its input end is connected to the ventilation device 6 to achieve the effect of exhausting air and accelerating the air flow, while the output end of the circulation fan 5 is connected to the transmission device 7. The circulation fan 5 outputs hot air into the transmission device 7. The transmission device 7 has the effect of heating the incoming air through the structural setting of the transmission device 7. The input pipe 71 of the transmission device 7 also plays an important role in the whole system. The input pipe 71 includes a bent pipe 711, a guide ring 712 and a receiving ring 713. The bent pipe 711 is fixedly connected to the output end of the circulation fan 5. Its curved shape can effectively guide the direction of the airflow, so that the airflow is guided to the plug-in pipe 76 and smoothly enters the partition through the plug-in pipe 76. In the temperature-insulated furnace box 2, while circulating hot air, due to the openings on both sides of the temperature-insulated furnace box 2, part of the hot air will leak out while the air is heated and flowing. In order to maintain the pressure balance in the furnace, the furnace will inhale air from the outside air at this time. As the pressure in the furnace decreases, under the action of atmospheric pressure, the furnace will form a pipeline bridge to transport air through the inner conveying pipe 77, the connecting pipe 73 and the outer pipe 72. At this time, the airflow output by the circulating fan 5 flows in the input pipe 71 and the plug pipe 76. The high-temperature and flowing gas is on the outer wall of the outside air. The air is heated by heating the connecting pipe 73 and the inner conveying pipe 77, so that the air temperature in the furnace is difficult to drop suddenly, reducing the product quality degradation caused by uneven heating of the glass. A rotating device 74 is provided to prevent the filter wire mesh 75 from being blocked. A spiral blade 742 and a scraper 743 are fixed to the outer side wall of the rotating cylinder 741 of the rotating device 74. When the airflow passes through the outside of the connecting pipe 73 and the inside of the curved pipe 711, the flowing airflow will drive the spiral blade 742 to rotate. The rotation of the spiral blade 742 not only enhances the disturbance of the airflow, but also makes the heat transfer more uniform, thereby uniformly heating the straight pipe 731. The straight pipe 731 on the connecting pipe 73 is connected to the rotating device 74 through a supporting ring 732. The supporting ring 732 not only provides support for the rotating device 74, but also enables the spiral blade 742 to drive the rotating cylinder 741 to rotate stably. In this process, the rotating scraper 743 will scrape the hot air pipe 761 and the filter wire mesh 75 fixed by the limit ring 762. During the air circulation process, some tiny impurities will be brought into the transmission device 7. If these impurities are not removed in time, they may block the filter wire mesh 75, affecting the circulation of the air flow, thereby reducing the preheating efficiency, making it difficult for it to be blocked by impurities after filtering the air for a long time, avoiding heat concentration and air circulation blockage. The scraped impurities will be sent to the side wall of the hot air pipe 761 by the rotating scraper 743, and fall due to gravity after the cycle is completed. They will be guided by the guide ring 712 to the receiving ring 713 to wait for the removal of the plug-in pipe 76 for cleaning. The spiral blade 742 is blown and rotated by the air flow to make the hot air fully contact with the external pipe 72, the connecting pipe 73 and the internal conveying pipe 77, thereby improving the heat transfer efficiency, thereby shortening the time for the furnace to heat up again and improving production efficiency. The plug-in pipe 76 comprises a hot air pipe 761, a limiting ring 762, a sealing cover 763 and a fixing block 764. The inner side wall of the hot air pipe 761 and the limiting ring 762 jointly fix the filter wire mesh 75 to ensure the stability of the position of the filter wire mesh 75, so that it is difficult to be displaced under the impact of the airflow. The sealing cover 763 is plugged with the supporting ring 732 to ensure the tight connection between the plug-in pipe 76 and the input pipe 71 to prevent airflow leakage. The inner pipe 771 of the inner delivery pipe 77 is plugged with the straight pipe 731 through the insertion ring 772, and one end is fixed with the fixing block 764. This connection method not only ensures the firm installation of the inner delivery pipe 77, but also facilitates disassembly and maintenance when necessary. The ventilation device 6 and the transmission device 7 work together to complete the hot air circulation process so that the preheating device can evenly preheat the glass entering the furnace.

[0029] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A preheating device for producing characteristic glass, characterized in that: include: Bracket (1); An insulating furnace box (2), wherein the outer wall of the bottom of the insulating furnace box (2) is fixedly connected to the outer wall of the top of the bracket (1); A heating wire (3), wherein the outer wall of the heating wire (3) is fixedly connected to the inner side wall of the temperature-insulating furnace box (2); A conveyor belt (4), wherein the outer wall of the conveyor belt (4) is rotatably connected to the inner wall of the bracket (1) via a rolling roller; A ventilation device (6), wherein an outer wall of the ventilation device (6) is fixedly connected to an outer wall of the bracket (1); A circulation fan (5), wherein an input end of the circulation fan (5) is fixedly connected to an outer wall of the ventilation device (6); A transmission device (7), wherein an outer wall of the transmission device (7) is fixedly connected to an output end of the circulation fan (5); The ventilation device (6) comprises a clearance device (61), and an opening and closing device (62) is slidably connected to the outer wall of the clearance device (61); The yielding device (61) comprises a fixing frame (611), the outer wall of the top of the fixing frame (611) is symmetrically provided with a placing block (612), the outer wall of the placing block (612) is fixedly connected to a limiting frame (613), the outer wall of the placing block (612) is fixedly connected to a cross connecting block (614), the outer wall of the cross connecting block (614) is symmetrically provided with a positioning block (615), the side of the positioning block (615) away from the connecting end of the cross connecting block (614) is fixedly connected to a fitting block (616), and a through groove (617) is provided in the wall of the cross connecting block (614).

2. A preheating device for producing characteristic glass according to claim 1, characterized in that: One end of the fitting block (616) away from the positioning block (615) is fixedly connected to the inner wall of the bracket (1), the side wall of the fixing frame (611) and the outer wall of the limiting frame (613) are both fixedly connected to the side wall inside the bracket (1), and the inner wall of the fixing frame (611) is fixedly connected to the outer wall of the cross connection block (614).

3. The preheating device for producing characteristic glass according to claim 1, characterized in that: The opening and closing device (62) comprises a DC motor (621), the output end of the DC motor (621) is fixedly connected to a driving gear (622), the driving gear (622) is symmetrically provided with a bidirectional screw (624) on the outside, one end of the bidirectional screw (624) close to the DC motor (621) is fixedly connected to a driven gear (623), the outer surface of the bidirectional screw (624) is threadedly connected to a sliding plate (625), the outer wall of the bottom of the sliding plate (625) is fixedly connected to a protruding block (626), the outer wall of the protruding block (626) is rotatably connected to a connecting rod (627), the end of the connecting rod (627) away from the protruding block (626) is rotatably connected to a limiting frame (628), the outer wall of the limiting frame (628) is fixedly connected to a connecting head (629), and the bottom of the connecting head (629) is fixedly connected to a bellows (6210).

4. A preheating device for producing characteristic glass according to claim 3, characterized in that: The outer wall of the bellows (6210) is fixedly connected to the input end of the circulating fan (5); the outer wall of the bottom of the DC motor (621) is fixedly connected to the outer wall of the bracket (1); the side of the driven gear (623) away from the bidirectional screw (624) is rotatably connected to the outer wall of the bracket (1); the side of the bidirectional screw (624) away from the driven gear (623) is rotatably connected to the inner wall of the bracket (1); the outer wall of the bottom of the sliding plate (625) is slidably connected to the outer wall of the cross connecting block (614) via a through groove (617); and the side wall of the sliding plate (625) is slidably connected to the side wall inside the bracket (1).

5. The preheating device for producing characteristic glass according to claim 1, characterized in that: The transmission device (7) comprises an input pipe (71), the inner wall of the input pipe (71) is fixedly connected to an external pipe (72), one end of the external pipe (72) close to the input pipe (71) is fixedly connected to a connecting pipe (73), the outer wall of the connecting pipe (73) is rotatably connected to a rotating device (74), the outer wall of the top of the connecting pipe (73) is plugged with an inner delivery pipe (77), the outer wall of the inner delivery pipe (77) is fixedly connected to an insert pipe (76), and the inner wall of the insert pipe (76) is fixedly connected to a filtering wire mesh (75).

6. The preheating device for producing characteristic glass according to claim 5, characterized in that: The input pipe (71) comprises a bent pipe (711), the outer wall of the bent pipe (711) being fixedly connected to the output end of the circulation fan (5), the outer wall of one end of the bent pipe (711) away from the circulation fan (5) being fixedly connected to a receiving ring (713), the inner side wall of the bent pipe (711) being fixedly connected to a guide ring (712), the outer side wall of the bent pipe (711) being fixedly connected to the inner wall of the bracket (1), and the inner wall of the bent pipe (711) being fixedly connected to the outer wall of the external pipe (72).

7. A preheating device for producing characteristic glass according to claim 6, characterized in that: The connecting pipe (73) comprises a straight pipe (731), the outer side wall of the straight pipe (731) is fixedly connected to a supporting ring (732), and the outer wall of the bottom of the straight pipe (731) is fixedly connected to the outer wall of the external pipe (72).

8. The preheating device for producing characteristic glass according to claim 7, characterized in that: The rotating device (74) comprises a rotating cylinder (741), the side wall outside the rotating cylinder (741) is fixedly connected to a spiral blade (742), the top of the spiral blade (742) is provided with a scraper (743), the outer wall of the top of the scraper (743) is slidably connected to the outer wall of the bottom of the filtering wire mesh (75), the outer wall of the scraper (743) is fixedly connected to the outer wall of the rotating cylinder (741), the side wall inside the rotating cylinder (741) is rotatably connected to the outer wall of the straight tube (731), and the outer wall of the bottom of the rotating cylinder (741) is rotatably connected to the outer wall of the top of the supporting ring (732).

9. The preheating device for producing characteristic glass according to claim 7, characterized in that: The plug-in tube (76) comprises a hot air pipe (761), the inner side wall of the hot air pipe (761) is fixedly connected to a limiting ring (762), the outer side wall of the hot air pipe (761) is fixedly connected to a sealing cover (763), one end of the hot air pipe (761) away from the sealing cover (763) is fixedly connected to a fixing block (764), the sealing cover (763) is plugged into a receiving ring (713), the outer wall of the limiting ring (762) and the inner side wall of the hot air pipe (761) are fixedly connected to the outer wall of the filtering steel wire mesh (75), and the outer wall of the hot air pipe (761) is fixedly connected to the inner wall of the temperature-insulating furnace box (2).

10. The preheating device for producing characteristic glass according to claim 9, characterized in that: The inner delivery pipe (77) comprises an inner pipe (771), the outer wall of the inner pipe (771) being fixedly connected to an insertion ring (772), the outer wall of the insertion ring (772) being plugged into the side wall inside the straight pipe (731), and one end of the inner pipe (771) away from the insertion ring (772) being fixedly connected to the outer wall of the fixing block (764).

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