CN109282650B - Glass convection heating furnace - Google Patents
Glass convection heating furnace Download PDFInfo
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- CN109282650B CN109282650B CN201811190690.6A CN201811190690A CN109282650B CN 109282650 B CN109282650 B CN 109282650B CN 201811190690 A CN201811190690 A CN 201811190690A CN 109282650 B CN109282650 B CN 109282650B
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- 239000011521 glass Substances 0.000 title claims abstract description 50
- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 27
- 239000000919 ceramic Substances 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000005340 laminated glass Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000005336 safety glass Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases or liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention belongs to the technical field of glass production equipment, and particularly relates to a glass convection heating furnace, which comprises a frame, a transfer device, a heating device and two convection systems, wherein a box body is arranged at the top of the frame, the transfer device is arranged in the box body and is used for conveying glass, and the transfer device is used for dividing the interior of the box body into an upper furnace body and a lower furnace body; the heating device comprises a plurality of upper heaters and a plurality of lower heaters, each upper heater is arranged on the upper furnace body, and each lower heater is arranged on the lower furnace body; the two convection systems are vertically symmetrically arranged on the upper furnace body and the lower furnace body, and each convection system comprises four fan devices which are arranged in the vertical and horizontal directions on the same horizontal plane and form an annular closed loop air flow when working simultaneously. Because the two convection systems enable the non-external air inflow to form convection, the convection systems drive the internal heat, so that the hot air is uniform, the heat loss caused by the introduction of external air is avoided, and the effects of energy conservation, high efficiency and low fault are achieved.
Description
Technical Field
The invention belongs to the technical field of glass production equipment, and particularly relates to a glass convection heating furnace.
Background
Laminated glass is commonly used as safety glass in the fields of building wall curtains, squares, glass trestle and the like, bulletproof, fireproof, other part of industrial application and the like. The laminated glass is formed by firmly adhering two or more than two pieces of glass by using transparent elastic films, wherein a PVB or SGB film is sandwiched between the two or more than two pieces of glass, and the two or more than two pieces of glass are firmly adhered together by heating and pressurizing. The laminated glass production flow is generally: cutting, cleaning and processing glass, laminating, prepressing and exhausting, and high-pressure forming. However, in the glass production industry, pre-press venting is generally divided into two types, the first one being the most commonly used roll venting method and the second one being the vacuum pre-press venting method.
The traditional heating furnace mainly adopts two schemes: scheme one: a blower is added at the upper part of the furnace body to blow so as to realize heat circulation convection; scheme II: the side-mounted motor is connected with the impeller through the speed reducer, so that the impeller rotates to drive air to flow to form convection. In the first scheme, the following steps are performed: because the external air source is brought in by adopting the fan, the temperature difference between the inside and the outside of the furnace is large, the internal temperature is easy to change, the internal heater is used for guaranteeing the temperature balance in the furnace, the continuous heating leads to the waste of energy, and meanwhile, the heater is easy to damage due to long-term work and is frequently maintained and replaced. In the scheme II: the fans are uniformly arranged on two sides for heat circulation convection, but due to the rigid connection adopted by the fans, the dynamic balance unbalance is caused by long-term running of the impellers, faults such as damage to a speed reducer and a motor bearing are easily caused, the maintenance cost and the maintenance resource occupation are large, the impellers are distributed at two ends of a furnace body, the wind directions of the impellers are fixed, partial local heat sources are uniformly distributed, the wind propagation direction does not form a closed loop, the heat at two ends is uniform, and the middle heat distribution is uneven due to the fact that convection is not formed. In the laminated glass production process, uneven heat distribution can lead to the overheating phenomenon of glass corners, can lead to film surface trip colored stress spots, and PVB film can be automatically decomposed at high temperature.
Therefore, developing a uniform convection oven suitable for processing SGP/PVB laminated glass is an urgent task for all laminated glass manufacturers.
Disclosure of Invention
The invention aims to provide a glass convection heating furnace, and aims to solve the technical problems of easy loss of heating energy and high failure rate of the glass heating furnace in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: the glass convection heating furnace comprises a frame, a transfer device, a heating device and two convection systems, wherein a box body is arranged at the top of the frame, the transfer device is arranged in the box body and used for conveying glass, and the transfer device divides the interior of the box body into an upper furnace body and a lower furnace body; the heating device comprises a plurality of upper heaters and a plurality of lower heaters, each upper heater is arranged on the upper furnace body, and each lower heater is arranged on the lower furnace body; the two convection systems are vertically symmetrically arranged on the upper furnace body and the lower furnace body, the two convection systems comprise four fan devices, the four fan devices are arranged in the vertical and horizontal directions on the same horizontal plane, and an annular closed loop air flow is formed when the four fan devices work simultaneously.
Preferably, each fan device comprises a motor, an impeller and a transmission mechanism, wherein the motor is installed outside the box body through a motor bracket, the impeller is arranged inside the box body, and the impeller is connected with a main shaft of the motor through the transmission mechanism.
Preferably, the impellers of the four fan devices of each convection system are respectively provided with a first impeller, a second impeller, a third impeller and a fourth impeller, the first impeller, the second impeller, the third impeller and the fourth impeller are arranged in the vertical and horizontal directions on the same plane in the box body, the first impeller and the second impeller are coaxially arranged, the third impeller and the fourth impeller are coaxially arranged, and the central axis connecting line of the first impeller and the second impeller is perpendicularly intersected with the central axis connecting line of the third impeller and the fourth impeller.
Preferably, the transmission mechanism comprises a driving sprocket, a driven sprocket, a chain and a transmission shaft, wherein the transmission shaft is rotatably installed in the box body, the impeller is fixed at one end of the transmission shaft, the driving sprocket and the driven sprocket are respectively connected with a main shaft of the motor and the transmission shaft, and the chain is wound between the driving sprocket and the driven sprocket.
Preferably, the driving sprocket and the driven sprocket are double-row roller sprockets, and the chain is a double-row roller chain.
Preferably, each fan device further comprises a protective cover, wherein the protective cover is arranged outside the driving sprocket and the chain exposed outside the box body, and the protective cover is fixedly connected with the box body.
Preferably, the heating device further comprises a thermocouple fixed to the case and extending into the case for detecting the temperature in the case.
Preferably, each of the upper heater and the lower heater is a mid-wave far-infrared heater.
Preferably, the transfer device comprises a plurality of ceramic conveying rollers, each ceramic conveying roller is arranged in the box body, two ends of each ceramic conveying roller are rotatably arranged on two opposite side plates of the box body, and asbestos ropes are wound on each ceramic conveying wheel.
Preferably, the box body comprises an inner cavity and a shell coated outside the inner cavity, and an insulation layer is filled between the inner cavity and the shell.
The invention has the beneficial effects that: when the glass convection heating furnace works, glass is conveyed to the transfer device arranged in the box body, when the glass is arranged on the transfer device, the upper heater and the lower heater of the heating device respectively heat on the upper furnace body and the lower furnace body, the upper surface and the lower surface of the glass borne on the transfer device are heated, meanwhile, in the heating process, two convection systems which are arranged on the upper furnace body and the lower furnace body in a vertically symmetrical mode are also in a working state, four fan devices of each convection system are arranged in the vertical and horizontal directions on the same horizontal plane, and form an annular closed loop air flow when the four fan devices of each convection system work simultaneously, the two annular closed loop air flows formed by the two convection systems enable the air flow in the upper furnace body and the lower furnace body to be uniform, and the temperature in the upper furnace body and the lower furnace body to be consistent all the time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a convection heating furnace for glass according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a glass convection heating furnace according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a glass convection heating furnace according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a fan device of a glass convection heating furnace according to an embodiment of the invention.
Wherein, each reference sign in the figure:
10-frame 11-box 20-transfer device
21-Ceramic conveying roller 30-heating device 31-upper heater
32-Lower heater 33-thermocouple 50-convection system
60-Fan device 61-motor 62-impeller
63-Transmission mechanism 64-protective cover 111-glass inlet and outlet
112-Heat preservation 601-motor support 602-convection support
631-Drive sprocket 632-driven sprocket 633-chain
634-Drive shaft.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 4 are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 3, the convection heating furnace for glass provided by the embodiment of the invention comprises a frame 10, a transfer device 20, a heating device 30 and two convection systems 50, wherein a box 11 is arranged at the top of the frame 10, and a glass inlet and outlet 111 for glass to enter and exit is arranged on the box 11. The transferring device 20 is arranged in the box body 11 and is used for conveying glass, and the transferring device 20 is used for dividing the inner part of the box body 11 into an upper furnace body (not shown) and a lower furnace body (not shown); the heating device 30 comprises a plurality of upper heaters 31 and a plurality of lower heaters 32, each upper heater 31 is arranged on the upper furnace body, and each lower heater 32 is arranged on the lower furnace body; the upper heaters 31 are combined to heat the upper surface of the glass positioned on the transfer device 20; and the respective lower heaters 32 are combined to generate heat in the lower furnace body, the lower surface of the glass positioned on the transfer device 20 can be heated.
Further, as shown in fig. 1 to 3, two convection systems 50 are symmetrically disposed on the upper furnace body and the lower furnace body, and the two convection systems 50 each include four fan devices 60, where the four fan devices 60 are disposed in the vertical and horizontal directions on the same horizontal plane, and when the four fan devices 60 work simultaneously, an annular closed loop air flow is formed. That is, the four fan units 60 in the two convection systems 50 are respectively arranged in the vertical and horizontal directions on a horizontal plane, so that after each fan unit 60 is opened, each fan unit 60 generates wind flow in one direction, and the four fan units 60 arranged on the same horizontal plane in the vertical and horizontal directions form a closed loop wind flow, so that the internal heat flow is more uniform, and the heat brought by the external air can be avoided to reduce the energy consumption.
In the glass convection heating furnace according to the embodiment of the invention, when the glass is transported to the transfer device 20 arranged in the box 11, when the glass is on the transfer device 20, the upper heater 31 and the lower heater 32 of the heating device 30 respectively generate heat on the upper furnace body and the lower furnace body, the upper surface and the lower surface of the glass borne on the transfer device 20 are heated, meanwhile, in the heating process, the two convection systems 50 which are arranged on the upper furnace body and the lower furnace body in a vertically symmetrical way are also in a working state, the four fan devices 60 of each convection system 50 are arranged in the vertical and horizontal directions on the same horizontal plane, and the four fan devices 60 of each convection system 50 simultaneously work to form an annular closed loop air flow, the two annular closed loop air flows formed by the two convection systems 50 ensure that the air flows in the upper furnace body and the lower furnace body are uniform, and the temperatures in the upper furnace body and the lower furnace body are kept consistent all the time, meanwhile, the two convection systems 50 ensure that the heat of the whole convection system 50 is the internal and the heat of the convection system is formed, the heat loss is not required to be uniform, the energy-saving effect is achieved, and the energy-saving effect is achieved by the air outlet is not required to be adjusted, and the energy-saving effect is achieved.
Further, a leveling device (not shown) is arranged on the frame 10, the frame 10 is manufactured by welding rectangular pipes of 80 x 60 x 4, the interval between the formed upper furnace body and the formed lower furnace body is 150mm for conveying glass, the leveling device is manufactured by welding rectangular pipes of 80 x 60 x 4, a 16mm steel plate is welded at the bottom and reinforced by using a triangular plate as a rib plate, M20 processing nuts are welded on the 16mm plate and form through threads by tapping the plate, and the balance and the height of the furnace body can be adjusted by bolts through supporting sizing blocks below the bottom plate.
In this embodiment, as shown in fig. 4, each fan device 60 includes a motor 61, an impeller 62 and a transmission mechanism 63, the motor 61 is mounted outside the case 11 through a motor bracket 601, the impeller 62 is disposed inside the case 11, and the impeller 62 is connected with a main shaft of the motor 61 through the transmission mechanism 63. Specifically, when the motor 61 is operated, the impeller 62 is driven to rotate by the transmission mechanism 63, and when the impeller 62 rotates, wind flow can be generated in a directional manner. Since the motor 61 is disposed outside the casing 11 and the impeller 62 is disposed inside the casing 11, the motor 61 and the impeller 62 can be separated from each other, the motor 61 is prevented from being damaged by aging of insulating members on the motor 61 due to high temperature outside the casing 11, and since the impeller 62 is not directly driven, the occurrence of unbalance of dynamic balance of the impeller 62 does not affect bearings disposed on the main shaft of the motor 61, and the failure rate is further reduced.
Preferably, the motor 61 adopts variable frequency control, and can automatically adjust the air quantity according to the temperature condition and the difference condition in the box 11.
In this embodiment, as shown in fig. 3, the impellers 62 of the four fan units 60 of each convection system 50 are respectively configured as a first impeller, a second impeller, a third impeller and a fourth impeller, where the first impeller, the second impeller, the third impeller and the fourth impeller are arranged in the vertical and horizontal directions on the same plane in the box 11, the first impeller and the second impeller are coaxially arranged, the third impeller and the fourth impeller are coaxially arranged, and the central axis connecting line of the first impeller and the second impeller perpendicularly intersects with the central axis connecting line of the third impeller and the fourth impeller. The arrangement is that the wind flow generated by the rotation of the first impeller is parallel to the wind flow generated by the rotation of the second impeller, the wind flow generated by the rotation of the third impeller is parallel to the wind flow generated by the rotation of the fourth impeller, and meanwhile, the wind flow generated by the rotation of the first impeller and the wind flow generated by the rotation of the second impeller are perpendicular to the wind flow generated by the rotation of the third impeller and the wind flow generated by the rotation of the fourth impeller. The wind flow generated by the rotation of the four impellers 62 may form an annular closed loop wind flow. The air in the box 11 is circulated, so that the heat is prevented from being brought in by the outside air, the heat of the box 11 is more uniform, and the heat loss in the box 11 is reduced.
In this embodiment, as shown in fig. 4, the transmission mechanism 63 preferably includes a driving sprocket 631, a driven sprocket 632, a chain 633 and a transmission shaft 634, the transmission shaft 634 is rotatably mounted in the housing 11, the impeller 62 is fixed at one end of the transmission shaft 634, the driving sprocket 631 and the driven sprocket 632 are respectively connected to the main shaft of the motor 61 and the transmission shaft 634, and the chain 633 is wound between the driving sprocket 631 and the driven sprocket 632. Wherein, can set up convection bracket 602 in box 11, transmission shaft 634 can rotationally install on this convection bracket 602 through the bearing frame, then when the main shaft of motor 61 rotates, drive driving sprocket 631 rotates, because be equipped with chain 633 around between driven sprocket 632 and the driving sprocket 631, then can drive driven sprocket 632 through the effect of this chain 633 and rotate, when driven sprocket 632 rotates, drive transmission shaft 634 rotates, impeller 62 of installing in transmission shaft 634 one end also rotates thereupon this moment, so, realized controlling impeller 62 and rotated, structural stability is good, can reduce the fault rate emergence when transmitting power, the practicality is strong.
Further, the convection bracket 602 is installed in the upper furnace body and on the lower furnace body, the convection bracket 602 is installed on the motor bracket 601 through bolts, the side face of the motor bracket 601 is connected with the end face of the motor 61, the motor 61 is connected on the motor bracket 601 through bolts, the main shaft of the motor 61 is installed on the driving sprocket 631 through key connection and interference fit, meanwhile, the end face is locked and positioned through a baffle plate and a locking bolt, UCP series of seated bearings are installed at the two ends of the convection bracket 602, the driving shaft 634 is installed on the bearings, the driven sprocket 632 is installed in the middle of the driving shaft 634 through interference fit and key connection, one side of the driven sprocket 632 is positioned by adopting a step, the other end of the driven sprocket 632 is positioned by adopting a lining ring, the shaft head of the driving shaft 634 is connected with the impeller 62 through key connection and interference fit, and the end face is positioned by adopting the baffle plate and the locking bolt. Meanwhile, the whole fan device 60 can be disassembled only by disassembling the convection bracket 602 in the whole convection system 50, so that the inspection, the maintenance and the maintenance are convenient.
In this embodiment, the driving sprocket 631 and the driven sprocket 632 are double-row roller sprockets, and the double-row roller sprockets used as the driving sprocket 631 and the driven sprocket 632 can ensure better stability and higher transmission efficiency during rotation. Similarly, the chain 633 is a double row roller chain 633.
In this embodiment, as shown in fig. 1 to 3, each fan device 60 further includes a protection cover 64, where the protection cover 64 is covered on the driving sprocket 631 and the chain 633 exposed outside the case 11, and the protection cover 64 is fixedly connected with the case 11. Specifically, the protective cover 64 is provided to protect the drive sprocket 631 and the chain 633 exposed outside the casing 11 from foreign matter entering the blower device 60; on the other hand, the safety performance of the setting and use is improved, and the occurrence of personal safety accidents caused by the misoperation of the fan device 60 is prevented.
In this embodiment, as shown in fig. 1, the heating device 30 further includes a thermocouple 33, where the thermocouple 33 is fixed on the case 11 and extends into the case 11 for detecting the temperature in the case 11. Specifically, a thermocouple 33 is arranged beside each heater, the environmental temperature of each heater is monitored on line through the thermocouple 33, and the working condition of each heater is regulated through PID closed loop, so that the temperature in the upper furnace body and the lower furnace body is ensured to be uniform.
Further, the upper heater 31 and the lower heater 32 are uniformly distributed in the axial direction of the heater at intervals of 200mm, the upper heater 31 and the lower heater 32 are respectively arranged on the upper furnace body and the lower furnace body, the upper heater 31 is arranged at intervals of 50mm and the thermocouple 33 is arranged at the position of the upper heater 31 to detect the environmental temperature of each group, the working condition of the heater and the working condition of the convection system 50 are automatically controlled on line through the detected temperature, if the temperature exceeds the set temperature, the heater stops working, meanwhile, the frequency of a motor 61 of the convection system 50 adjacent to the heater is increased, and the air quantity of the impeller 62 is increased, so that the aim of accurately controlling the temperature is fulfilled; if the temperature is within the set temperature range, automatically judging and selecting a plurality of groups of heaters to work according to the detection condition of the thermocouple 33 so as to achieve heat balance; if the temperature is lower than the set temperature, the system determines that the temperature is abnormal, and the convection system 50 operates all the heaters, and the impeller 62 of the convection system 50 is slowed down to quickly raise the temperature.
In this embodiment, each of the upper heater 31 and the lower heater 32 is a mid-wave far infrared heater. In particular, the medium-wave far infrared heater is particularly suitable for the production of glass laminating adhesives.
In this embodiment, as shown in fig. 1, the transferring device 20 includes a plurality of ceramic conveying rollers 21, each ceramic conveying roller 21 is disposed in the case 11, two ends of each ceramic conveying roller 21 are rotatably mounted on two opposite side plates of the case 11, and asbestos ropes (not shown) are wound on each ceramic conveying wheel. Specifically, the outside winding asbestos rope of conveying roller can guarantee conveying glass's stationarity and skid resistance, avoids glass to appear colliding with or skidding the phenomenon in the transportation, and UCP series area seat bearing is installed respectively to ceramic conveying roller 21's both sides, and this series bearing has the aligning function, avoids causing the phenomenon of being inflexible because of position change or machining precision reason, makes ceramic conveying roller 21 rotate, and the terminal surface adopts synchronous pulley drive simultaneously, by an holistic axle drive whole box 11 in the ceramic conveying roller 21 that sets up, avoid single transmission to cause the phenomenon of transmission speed mismatch.
Wherein the interval between two adjacent ceramic transfer rolls 21 is preferably 200mm.
In this embodiment, as shown in fig. 2, the case 11 includes an inner cavity (not shown) and a housing (not shown) covering the inner cavity, and an insulation layer 112 is filled between the inner cavity and the housing. Specifically, the heat-insulating layer 112 is installed at the gap between the inner cavity and the outer shell, and the inner cavity and the outer shell are preferably made of stainless steel plates, so that the heat-insulating layer 112 is installed by firstly installing the inner cavity, then filling the heat-insulating layer 112, and finally installing the outer shell. The material of the insulating layer 112 is preferably filled with non-asbestos products, such as aluminum silicate and rock wool, to avoid asbestos injuries to the human body.
The box 11 is provided with an overhaul area (not shown) which is in a hole structure and is just positioned at the installation position of the motor bracket 601, so that after the motor bracket 601 is taken down, parts such as the impeller 62 and the like can be overhauled in the overhaul area, and the maintenance and overhaul of the convection system 50 are facilitated.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A glass convection heating furnace, characterized in that: the glass conveying device comprises a frame, a transfer device, a heating device and two convection systems, wherein a box body is arranged at the top of the frame, the transfer device is arranged in the box body and is used for conveying glass, and the transfer device divides the interior of the box body into an upper furnace body and a lower furnace body; the heating device comprises a plurality of upper heaters and a plurality of lower heaters, each upper heater is arranged on the upper furnace body, and each lower heater is arranged on the lower furnace body; the two convection systems are vertically symmetrically arranged on the upper furnace body and the lower furnace body, each convection system comprises four fan devices, the four fan devices are arranged in the same horizontal plane in the vertical and horizontal directions, and an annular closed loop air flow is formed when the four fan devices work simultaneously;
Each fan device comprises a motor, an impeller and a transmission mechanism, wherein the motor is arranged outside the box body through a motor bracket, the impeller is arranged inside the box body, and the impeller is connected with a main shaft of the motor through the transmission mechanism;
The driving mechanism comprises a driving sprocket, a driven sprocket, a chain and a transmission shaft, the transmission shaft is rotatably arranged in the box body, the impeller is fixed at one end of the transmission shaft, the driving sprocket and the driven sprocket are respectively connected with a main shaft of the motor and the transmission shaft, and the chain is wound between the driving sprocket and the driven sprocket;
The four impellers of the fan device of each convection system are respectively arranged into a first impeller, a second impeller, a third impeller and a fourth impeller, the first impeller, the second impeller, the third impeller and the fourth impeller are arranged in the vertical, horizontal and horizontal directions on the same plane in the box body, the first impeller and the second impeller are coaxially arranged, the third impeller and the fourth impeller are coaxially arranged, and the connecting line of the middle shaft of the first impeller and the connecting line of the middle shaft of the second impeller is perpendicularly intersected with the middle shaft of the third impeller and the middle shaft of the fourth impeller.
2. The glass convection heating furnace of claim 1, wherein: the driving chain wheel and the driven chain wheel are double-row roller chain wheels, and the chain is a double-row roller chain.
3. The glass convection heating furnace of claim 1, wherein: each fan device further comprises a protective cover, wherein the protective cover is arranged outside the driving sprocket and the chain exposed outside the box body, and the protective cover is fixedly connected with the box body.
4. A glass convection heating furnace according to any one of claims 1 to 3, wherein: the heating device further comprises a thermocouple, wherein the thermocouple is fixed on the box body and stretches into the box body to be used for detecting the temperature in the box body.
5. A glass convection heating furnace according to any one of claims 1 to 3, wherein: each of the upper heater and the lower heater is a medium wave far infrared heater.
6. A glass convection heating furnace according to any one of claims 1 to 3, wherein: the transfer device comprises a plurality of ceramic conveying rollers, each ceramic conveying roller is arranged in the box body, two ends of each ceramic conveying roller are rotatably arranged on two opposite side plates of the box body, and asbestos ropes are wound on each ceramic conveying wheel.
7. A glass convection heating furnace according to any one of claims 1 to 3, wherein: the box body comprises an inner cavity and a shell which is coated outside the inner cavity, and an insulating layer is filled between the inner cavity and the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190690.6A CN109282650B (en) | 2018-10-12 | 2018-10-12 | Glass convection heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190690.6A CN109282650B (en) | 2018-10-12 | 2018-10-12 | Glass convection heating furnace |
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| CN109282650A CN109282650A (en) | 2019-01-29 |
| CN109282650B true CN109282650B (en) | 2024-04-30 |
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| CN201811190690.6A Active CN109282650B (en) | 2018-10-12 | 2018-10-12 | Glass convection heating furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117021729A (en) * | 2023-07-19 | 2023-11-10 | 信义节能玻璃（四川）有限公司 | Thermal convection energy-saving device and energy-saving method for laminated glass preformer |
| CN116947306A (en) * | 2023-07-27 | 2023-10-27 | 东莞南玻智能装备制造有限公司 | Tempering furnace and combustion control method |
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| CN201233098Y (en) * | 2008-05-22 | 2009-05-06 | 浙江阿林斯普能源科技有限公司 | Internal circulation air duct structure for indoor heater |
| CN201962190U (en) * | 2011-03-25 | 2011-09-07 | 洛阳北方玻璃技术股份有限公司 | Heating furnace for toughening glass |
| CN209386793U (en) * | 2018-10-12 | 2019-09-13 | 信义节能玻璃（四川）有限公司 | Glass convective oven |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5340091A (en) * | 1993-04-21 | 1994-08-23 | Gas Research Institute | Batch coil annealing furnace |
| CN201233098Y (en) * | 2008-05-22 | 2009-05-06 | 浙江阿林斯普能源科技有限公司 | Internal circulation air duct structure for indoor heater |
| CN201962190U (en) * | 2011-03-25 | 2011-09-07 | 洛阳北方玻璃技术股份有限公司 | Heating furnace for toughening glass |
| CN209386793U (en) * | 2018-10-12 | 2019-09-13 | 信义节能玻璃（四川）有限公司 | Glass convective oven |
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| CN109282650A (en) | 2019-01-29 |
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