CN211770930U - Air supply equipment of air-collecting type glass tempering furnace - Google Patents
Air supply equipment of air-collecting type glass tempering furnace Download PDFInfo
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- CN211770930U CN211770930U CN202020075298.3U CN202020075298U CN211770930U CN 211770930 U CN211770930 U CN 211770930U CN 202020075298 U CN202020075298 U CN 202020075298U CN 211770930 U CN211770930 U CN 211770930U
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Abstract
The utility model belongs to glass physics tempering cooling field, concretely relates to air supply equipment of glass tempering furnace of collection wind formula. The air grid structure comprises a plurality of air grid packages which are oppositely arranged up and down, and an air supply device group for supplying air to all the air grid packages, wherein the air supply device group consists of a plurality of small air supply devices; an air collecting box is arranged between each air grid packet and the air supply device group, and an air inlet of the air grid packet of each air grid packet is connected with the air collecting box through a communicating pipe; the air supply device group supplies air to the air collecting box in a centralized manner, and the air collecting box distributes the wind power to each wind grid packet. The utility model discloses in adopt many small-size air feed devices, many low-power fan/air pump replacement one big fan's method promptly, to album wind box air feed redistribution wind-force to each air grid package, small-size air feed device's motor is little, has to start in the twinkling of an eye fast, open the advantage that stops at will, the fan need not the preparation time of overlength, has reduced useless consumption, reduces 30% at least in the power consumption, has apparent energy-conserving effect.
Description
Technical Field
The invention relates to the field of glass physical tempering and cooling, in particular to air supply equipment of an air-collecting type glass tempering furnace.
Background
The toughened glass production line used in the current market generally comprises an upper piece platform, a heating furnace, a cooling section and a lower piece platform. And (3) loading the glass to be processed on an upper piece platform, heating the glass at high temperature in a heating furnace, toughening and cooling the glass in a cooling section, and unloading the glass on a lower piece platform.
For a cooling section in the existing physical tempering, an air supply system of the cooling section adopts one or more (series) high-power or ultra-high-power fans to collect air volume and then distributes air supply to a whole air grid (dozens or even dozens of independent air grid nozzles form the whole air grid, even more than 100 air grid nozzles can be formed for a continuous production process with large capacity), the power of a single fan is concentrated at 110 KW-315 KW, and the power of the fan even needs to reach more than 1000KW for special glass such as fireproof glass. Such as: CN105271667A discloses a cooling system for toughened glass and a cooling method thereof, comprising a Roots blower generating wind flow, wherein the wind supply is provided by a high-power Roots blower.
However, the air supply system in the prior art has the following defects:
1. the existing fans suitable for the cooling section of the toughening furnace are large fans with 110 kw-315 kw and impeller width exceeding 1m, when the fans are used, the acceleration starting time from zero rotating speed to rated rotating speed is long, 20-50 seconds are needed each time, for thin-layer glass, the real toughening use time only needs several seconds to ten seconds (less than or equal to 20 seconds), for example, the glass with the thickness of 3mm, the heating time is 90-100s, the quenching air pressure is 16000pa, the quenching time is 5-10s, the subsequent cooling air pressure is 2000pa, the cooling time is 10-15s, as the cooling time is far less than the heating time, in order to save electric energy, the fans are discontinuously started and stopped when in actual use, and the fans have certain standby frequency; however, the long-time preparation time of the fan is actually the idle work, the preparation time (20-50 s) of the large fan exceeds the service time (5-10 s), most of the electric energy is used for the start preparation of the fan, and great electric energy resources are wasted;
2. the heavy high-power (diameter) fan impeller has large throwing power during high-speed operation, frequent accidents of throwing and rotting of the impeller, high danger, low safety and short service life which is generally only 3-5 years; the volume is large (the diameter of the impeller reaches 1.0-1.6 meters), the occupied area is large, and once the impeller is damaged, the impeller is not easy to replace and maintain, and the impeller is inconvenient to use in practice;
3. the high-power fan, the noise is too big during the use, can reach 110 decibels, causes very big harm to operating personnel's hearing.
The air supply system in the prior art has the defects of high energy consumption, short service life, difficult maintenance, high danger, overlarge noise and the like, and needs to be improved.
Disclosure of Invention
In order to solve the technical problems of large energy consumption, short service life, difficult maintenance, high danger, overlarge noise and the like of an air supply system in the prior art, the invention provides the air collecting type air supply equipment of the glass tempering furnace, which has the advantages of energy conservation, long service life, easy installation and maintenance, high safety performance and low noise, and can effectively reduce the production cost and improve the working environment.
The utility model provides a wind-collecting type air supply device for a glass tempering furnace, which comprises a plurality of wind grid packs which are oppositely arranged up and down, wherein each wind grid pack comprises one or a plurality of wind grid strips, the bottom surface of each wind grid strip is provided with a plurality of wind grid air outlets, the end part of each wind grid pack is provided with a wind grid pack air inlet, and the wind grid pack air inlet is communicated with each wind grid; the air supply equipment also comprises an air supply device group for supplying air to all the air grid packs, wherein the air supply device group consists of a plurality of small air supply devices; an air collecting box is arranged between each air grid packet and the air supply device group, and an air inlet of the air grid packet of each air grid packet is connected with the air collecting box through a communicating pipe; the air supply device group supplies air to the air collecting box in a centralized manner, and the air collecting box distributes the wind power to each wind grid packet.
Furthermore, the small air supply device adopts a fan or an air pump with the power less than or equal to 50kw and the diameter of an impeller less than or equal to 800 mm.
Further, the air supply device group comprises at least 4 small air supply devices.
Furthermore, the small air supply devices are arranged around the air collecting box or on the framework of the air collecting box body, and the air outlet of each small air supply device is connected with the air collecting box through a hose or a steel pipe.
Furthermore, the air collecting boxes are a communicated whole, and all the small air supply devices are started and stopped simultaneously.
Furthermore, the air collecting box is formed by combining a plurality of independent air collecting areas, each independent air collecting area is communicated with a plurality of air grid packs for air supply, each independent air collecting area is supplied with air by a plurality of small air supply devices, and the independent switch of the small air supply devices in each independent air collecting area is controlled.
Furthermore, the types of the small air supply devices in each independent air collecting interval can be the same or different, and the small air supply devices in each independent air collecting interval are started and stopped in a time-sharing mode.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts a plurality of small air supply devices, namely a method of replacing one large fan by a plurality of low-power fans/air pumps, redistributes the wind power to each air grid packet for air supply of the air collecting box, has the advantages of small motor of the small air supply device, quick instant starting and boosting and random starting and stopping, does not need overlong preparation time for the fan, reduces useless power consumption, at least reduces 30 percent of energy consumption, and has remarkable energy-saving effect. Meanwhile, the fan is more flexible in type selection, and air can be supplied according to requirements so as to adapt to glass production lines with different specification requirements.
2. Compared with a high-power fan, the small air supply device has much lower individual noise, and the noise value of the combined small air supply device is lower than 80 decibels, so that the working environment is effectively improved, and the noise pollution is reduced.
3. The small air supply device has the advantages that the impeller runs at a high speed and has a smaller throwing force, the service life of the small air supply device is much longer than that of a high-power fan, the service life can reach 10 years, the small air supply device is small in size and small in occupied area, and when an individual is damaged, the small air supply device is easy to replace and maintain, better in safety performance and more flexible and convenient to use in actual use.
In a word, the air supply equipment of the glass tempering furnace provided by the invention has the advantages of energy conservation, low noise, long service life, easiness in installation and maintenance, high safety performance and the like, can effectively reduce the production cost and improve the working environment, and can be widely applied to the cooling section of each glass tempering furnace.
Drawings
Fig. 1 is a structure diagram of a high-power fan wind collecting box type passing + reciprocating type wind supply structure in the prior art.
Fig. 2 is a structure diagram of a high-power fan wind collection box type pure reciprocating type wind supply in the prior art.
Fig. 3 is a schematic view of an application of the air supply device in the embodiment.
Fig. 4 is a schematic structural diagram of the grill package in the present embodiment.
In the figure, 1, a wind grid packet; 11. air grid bars; 12. the air outlet of the air grid strip; 14. The air grid wraps the air inlet mounting port; 2. a wind supply device group; 21. A small air supply device; 3. An air collecting box; 4. a communicating pipe; 6. A cooling section; 60. a cooling fan; 61. a tempering section; 610. tempering the fan; 62. a cooling section; 620. a cooling fan; 7. a rollgang.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, in the prior art, the glass tempering furnace integrally includes an upper stage (not shown in the figure), a heating furnace (not shown in the figure), a cooling section 6 and a lower stage (not shown in the figure), wherein the cooling section 6 includes a tempering section 61 and a cooling section 62, a glass plate is borne by a roller conveyor 7 and sequentially passes through the tempering section 61 and the cooling section 62, and the tempering section 61 and the cooling section 62 are both composed of a plurality of air grid packs 1 and an air supply fan. And fans with different powers are respectively adopted for the toughening section 61 and the cooling section 62 to supply air to the air grid package 1.
For example, for thin glass with the thickness of 3mm, quenching and strengthening (toughening) are needed firstly, and then cooling with lower wind pressure is needed, wherein the process parameters are about 90-100s of heating time, 16000pa of toughening wind pressure, 5-10s of toughening time, 2000pa of subsequent cooling wind pressure and more than 20s of cooling time; for example, for thick glass with a thickness of 19mm, low wind pressure tempering is required, and then high wind pressure cooling is required, wherein the process parameters are about 900-1500s for heating time, 300pa for strengthening wind pressure and more than 300s for tempering, about 2000pa for subsequent cooling wind pressure and more than 400s for cooling. The tempering section is usually realized by pure reciprocating type (the tempering section and the cooling section share the whole air grid), through + reciprocating type (the air grid is composed of two areas, and the air supply equipment with 2 air pressures supplies air respectively, the air pressure passing through the section is high, and the air pressure of the reciprocating section is low), continuously through type (the front of the whole air grid section is a tempering area and the back is a cooling area, the two areas supply air respectively by the air supply equipment with different pressures (if a thick plate continuous furnace, the air supply equipment with the same air pressure supplies air), and the continuous conveying of the glass plate is realized in the same way.
For the part 61 of the tempering section, because the tempering section 61 needs to rapidly cool the heated glass so as to generate external stress on the surface of the glass, the requirement on quenching air pressure is very high, in the prior art, the air supply system of the strengthening section 6 adopts one or more (series) high-power or super-high-power fans to integrate air volume and then distribute air supply to the whole air grid (dozens or even dozens of independent air grid nozzles to form the whole air grid) (the fan power is concentrated at 110 KW-315 KW, and for special glass such as fireproof glass, the fan power even needs to reach more than 1000 KW); different glass thickness, required tempering section wind pressure are different, and generally glass thickness is less, and required wind pressure is higher, and fan power is big more. As shown in fig. 1, two high-power toughening fans 610 are adopted to supply air to one air collecting box 3, the power of the toughening fans 610 is more than 110kw, and the air is distributed to each air grid package 1 by the air collecting box 3 (in the figure, the connecting pipes are not completely shown in order to show the structure of the air grid package, which should not affect understanding). For the cooling section 62, because the air grid section for supplying air is longer, the actual length is not limited to the proportional length in the figure, and the power of the cooling fan 620 is also larger, as shown in fig. 1, two high-power cooling fans 620 are used for supplying air to one wind collecting box 3, the power of the cooling fan 620 is more than 110kw, and the wind power is distributed to each air grid package 1 by the wind collecting box 3.
The cooling section 6 shown in fig. 2 is a reciprocating air grid section, i.e. the tempering section and the cooling section share one air grid section, and is supplied with air in multiple frequency bands by a variable frequency high-power cooling fan 60, and simultaneously, air is supplied to an air collecting box first and then distributed to each air grid packet.
However, such a wind supply system has the following drawbacks: 1. the existing fans suitable for the toughening furnace are large fans with 110 kw-315 kw and impeller diameter exceeding 1m, when the fans are used, the accelerated starting time from zero rotating speed to rated rotating speed is long, 20-50 seconds are needed each time, for thin-layer glass, the real toughening use time only needs several seconds to ten seconds (less than or equal to 20 seconds), for example, the glass with the thickness of 3mm, the heating time is 90-100 seconds, the quenching air pressure is 16000pa, the quenching time is 5-10 seconds, the subsequent cooling air pressure is 2000pa, the cooling time is 10-15 seconds, as the cooling time is far shorter than the heating time, the fans are discontinuously started and stopped when the fans are actually used, and the fans have certain standby frequency; however, the long-time preparation time of the fan is actually the idle work, the preparation time (20-50 s) of the large fan exceeds the service time (5-10 s), most of the electric energy is used for the start preparation of the fan, and great electric energy resources are wasted; 2. the heavy high-power (diameter) fan impeller has large throwing power during high-speed operation, frequent accidents of throwing and rotting of the impeller, high danger, low safety and short service life which is generally only 3-5 years; the volume is large (the diameter of the impeller reaches 1.0-1.6 meters), the occupied area is large, and once the impeller is damaged, the impeller is not easy to replace and maintain, and the impeller is inconvenient to use in practice; 3. the high-power fan, the noise is too big during the use, can reach 110 decibels, causes very big harm to operating personnel's hearing.
In the embodiment, as shown in fig. 3 and 4, the high-power fan in the prior art is improved to be composed of a plurality of small-sized air supply devices. The air supply equipment comprises a plurality of air grid packs 1 which are oppositely arranged up and down, each air grid pack 1 comprises one or more air grid strips 11, a plurality of air grid air outlets 12 are arranged on the bottom surface of each air grid strip 11, air grid pack air inlet mounting openings 14 are formed in the end parts of the air grid packs 1, and the air grid pack air inlet mounting openings 14 are communicated with each air grid 11; the air supply equipment also comprises an air supply device group 2 for supplying air to all the air grid packs 1, wherein the air supply device group 2 consists of a plurality of small air supply devices 21; an air collecting box 3 is arranged between each air grid package 1 and the air supply device group 2, and an air inlet 14 of each air grid package 1 is connected with the air collecting box 3 through a communicating pipe; the air supply device group 2 supplies air to the air collecting box 3 in a centralized manner, and distributes the air force to each air grid packet 1 from the air collecting box 3.
4-8 air grid bars are preferably selected for the air grid package 1, the bottoms of the air grid bars are provided with air outlets, the end parts of the air grid package 1 are provided with air inlets, a plurality of air grid bars are combined into a whole, the combined installation of the air grid bars 11 is facilitated, the lifting of the air grid packages is also facilitated, and compared with the connection structure of the lifting of each air grid bar, the connection structure of the integral lifting is simplified. The air grid package 1 is arranged on the frame, the lifting mechanism is arranged on the frame, the air grid package 1 is driven to lift, and the air grid package 1 can lift to adapt to glass production with different thickness specifications.
The air grid packages 1 are symmetrically arranged above and below the conveying roller way 8, the air grid air outlets 12 of the air grid packages 1 face the conveying roller way 8, the heated glass plate is rapidly cooled in the tempering section 6 and then enters the cooling section 7 to be continuously cooled. And fans with different powers are respectively adopted for the toughening section 6 and the cooling section 7 to supply air to the air grid packet 1.
In the embodiment of the invention, compared with fig. 1 and 2, the air supply device group 2 for supplying air to all the air grid packs 1 in the tempering section is composed of a plurality of small air supply devices 21. The small air supply device 21 is a fan or an air pump with the power less than or equal to 50kw and the impeller diameter less than or equal to 800 mm. The air supply device group 2 comprises at least 4 small air supply devices 21. The small air supply devices 21 are arranged around the air collecting box 3 or on the box body framework of the air collecting box 3, and the air outlet of each small air supply device 21 is connected with the air collecting box 3 through a hose or a steel pipe.
In this embodiment, 30 small-sized 12KW air feeders 21 are erected to be equivalent to two 180KW fans. Each small air supply device 21 is connected with an air collecting box through a hose or a steel pipe, air is supplied to the air collecting box in a collective mode, and the air collecting box redistributes the wind power to 6 air grid bags. The air collecting box of the present embodiment is a communicated whole, and all the small air supply devices 21 (low-power fans or air pumps) are started and stopped at the same time. Of course, the wind collecting box may also be formed by combining several independent wind collecting areas, each independent wind collecting area may be used for connecting one or more wind grid packs for supplying wind, and the power and model of the small wind supply device 21 in each independent wind collecting area may be different. The small air supply device 21 of each independent air collecting area can be started and stopped in a time-sharing mode. When the glass plate moves forwards, the independent air collecting area of the rear area where the glass plate passes can be closed in advance, so that unnecessary electric energy consumption can be avoided, and the energy-saving effect is obvious.
It should be noted that the air supply device is mainly applied to the tempering section 61, but may be applied to the cooling section 62 as well, and small air supply devices 21 with different powers, models and numbers may be selected. In the device in the figure, the toughening section 61 and the cooling section 62 are respectively and independently supplied with air. The glass plate is directly conveyed by a pass mode in the toughening section 61 and is conveyed by a reciprocating mode in the cooling section 62, namely the glass plate moves back and forth until the temperature of the glass plate is reduced to be cooled to the room temperature and then is conveyed to the next station. The reciprocating conveying cooling section 62 is suitable for small and medium-sized glass factories with low yield, and can effectively save space. Of course, the cooling section 62 can also be directly conveyed by a pass-through type, and the cooling section 62 in the form is suitable for large-scale glass factories with relatively large production capacity, so that the production efficiency of large production capacity is guaranteed. In another case, the toughening section 61 and the cooling section 62 share a conveyor belt, and as shown in fig. 2, the toughening and cooling processes are supplied with air respectively by a variable frequency fan. Is suitable for small-sized glass factories with limited space. In this case, the rated power of the fan used is still large, and the above-mentioned problems caused by using a high-power fan still exist, and the technical scheme of the present invention can be used for improvement.
By adopting the technical scheme of the invention, a method of replacing one large fan by a plurality of low-power high-pressure fans/air pumps is adopted, so that a plurality of low-power high-pressure fans/air pumps carry out swarm lumped combined indirect air supply on the reinforced air grid section through the air collecting boxes, and because the small-power high-pressure fans/air pumps can be started and boosted quickly instantly due to the small motors, the motors can be started and stopped randomly, the function of supplying air according to needs can be basically realized, and the energy conservation can be realized; the blower/air pump is small in noise and low in noise, so that acoustic pollution is reduced, and safety is greatly improved; and the individual is easy to maintain and replace when damaged, the whole service life is longer, and the practical application is more portable.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (7)
1. The air supply equipment of the air-collecting glass tempering furnace is characterized by comprising a plurality of air grid packages (1) which are oppositely arranged up and down, wherein each air grid package (1) comprises one or more air grid strips (11), a plurality of air grid air outlets (12) are arranged on the bottom surface of each air grid strip (11), an air grid package air inlet (14) is arranged at the end part of each air grid package (1), and the air grid package air inlet (14) is communicated with each air grid strip (11); the air supply equipment also comprises an air supply device group (2) for supplying air to all the air grid packages (1), wherein the air supply device group (2) consists of a plurality of small air supply devices (21); an air collecting box (3) is arranged between each air grid package (1) and the air supply device group (2), and an air inlet (14) of each air grid package (1) is connected with the air collecting box (3) through a communicating pipe; the air supply device group (2) supplies air to the air collecting box (3) in a centralized manner, and distributes the wind power to each wind grid packet (1) through the air collecting box (3).
2. The air supply equipment of the air-collecting type glass tempering furnace according to claim 1, wherein the small air supply device (21) is a fan or an air pump with power less than or equal to 50kw and impeller diameter less than or equal to 800 mm.
3. Air supply equipment of a wind-collecting type glass tempering furnace according to claim 2, characterized in that the air supply device group (2) comprises at least 4 small air supply devices (21).
4. The air supply equipment of the air-collecting type glass tempering furnace according to claim 2, wherein the small air supply devices (21) are installed around the air-collecting box (3) or on the box body framework of the air-collecting box (3), and the air outlet of each small air supply device (21) is connected with the air-collecting box (3) by a hose or a steel pipe.
5. A wind-collecting type glass tempering furnace wind feeding equipment according to any of claims 1-4, characterized in that wind-collecting box (3) is a communicated whole, and all small wind feeding devices (21) are started and stopped at the same time.
6. The air supply equipment of the air-collecting type glass tempering furnace according to any one of claims 1 to 4, wherein the air-collecting box (3) is formed by combining a plurality of independent air-collecting areas, each independent air-collecting area is communicated with a plurality of air grid packages (1) for air supply, each independent air-collecting area is supplied with air by a plurality of small air supply devices (21), and the small air supply devices (21) in each independent air-collecting area are controlled by independent switches.
7. The air supply equipment of the wind-collecting type glass tempering furnace according to claim 6, wherein the type selection of the small air supply devices (21) of each independent wind-collecting section can be the same or different, and the small air supply devices (21) of each independent wind-collecting section are started and stopped in a time-sharing manner.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682719A (en) * | 2021-08-13 | 2021-11-23 | 宣城吉鼎玻机械有限公司 | Glass loading method of glass tempering furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682719A (en) * | 2021-08-13 | 2021-11-23 | 宣城吉鼎玻机械有限公司 | Glass loading method of glass tempering furnace |
| CN113682719B (en) * | 2021-08-13 | 2023-08-11 | 宣城吉鼎玻机械有限公司 | Glass loading method of glass tempering furnace |
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