阅读说明：本技术 制造高强度防火玻璃的节能型设备及方法 (Energy-saving equipment and method for manufacturing high-strength fireproof glass ) 是由 严春来 吴从真 肖坚伟 刘飞 万真 林俊明 郑耿标 乐绪煌 杨波 王庆林 于 2020-11-26 设计创作，主要内容包括：本发明公开了一种制造高强度防火玻璃的节能型设备及方法,包括相连的加热装置和冷却钢化装置：冷却钢化装置包括冷却风系统、喷雾系统和冷却风栅,冷却风栅包括相对安装且结构相同的两部分风栅,被冷却玻璃在两者之间运动,每部分风栅包括风栅本体、雾化喷嘴和风嘴,在风栅本体朝向玻璃方向的平面上设有雾化喷嘴和风嘴,风嘴连接冷却风系统,雾化喷嘴连接喷雾系统。本发明采用喷雾冷却和空气冷却相结合的方式,通过液体喷雾的冷却作用及空气介质温度的降低,能够达到极速冷却的效果,在不加大风机功率的前提下,同样可以在玻璃表面产生较高的表面应力,解决防火玻璃单位能耗高的问题,取得良好的节能降耗效果。(The invention discloses an energy-saving device and a method for manufacturing high-strength fireproof glass, which comprises a heating device and a cooling tempering device which are connected, wherein the heating device comprises a heating roller, a tempering roller and a tempering roller, and the tempering roller comprises a heating roller, a tempering roller and a tempering roller, wherein the tempering roller is connected with the heating roller, the: the cooling and toughening device comprises a cooling air system, a spraying system and a cooling air grid, the cooling air grid comprises two parts of air grids which are installed oppositely and have the same structure, cooled glass moves between the two parts of air grids, each part of air grid comprises an air grid body, an atomizing nozzle and an air nozzle, the atomizing nozzle and the air nozzle are arranged on the plane of the air grid body facing to the glass direction, the air nozzles are connected with the cooling air system, and the atomizing nozzle is connected with the spraying system. The invention adopts a mode of combining spray cooling and air cooling, can achieve the effect of extremely fast cooling through the cooling effect of liquid spray and the reduction of the temperature of an air medium, can also generate higher surface stress on the surface of the glass on the premise of not increasing the power of a fan, solves the problem of high unit energy consumption of the fireproof glass, and obtains good energy-saving and consumption-reducing effects.)

1. The utility model provides a make energy-saving equipment of high strength fire prevention glass which characterized in that: the device comprises a heating device and a cooling and toughening device which are connected:

the cooling tempering device comprises a cooling air system, a spraying system and a cooling air grid, the cooling air grid comprises two parts of air grids which are installed oppositely and have the same structure, cooled glass moves between the two parts of air grids, each part of air grid comprises an air grid body, an atomizing nozzle and an air nozzle, the atomizing nozzle and the air nozzle are arranged on the plane of the air grid body facing to the glass direction, the air nozzles are connected with the cooling air system, and the atomizing nozzle is connected with the spraying system.

2. An energy efficient apparatus for manufacturing a high strength fire resistant glass as claimed in claim 1, wherein: the atomizing nozzle and the air nozzle are arranged on the plane of the air grid body facing to the glass direction in a staggered mode.

3. An energy efficient apparatus for manufacturing a high strength fire resistant glass as claimed in claim 1, wherein: the cooling air system comprises a fan, an air pipe and an air inlet, the side wall of the air grid body is provided with the air inlet communicated with the air nozzle, and the air inlet is connected with the fan through the air pipe.

4. An energy efficient apparatus for manufacturing a high strength fire resistant glass as claimed in claim 3, wherein: the cooling air system comprises a circulating water cooling section, the circulating water cooling section comprises a coil pipe, the coil pipe is arranged in the air pipe, and cooling water circulates in the coil pipe.

5. An energy efficient apparatus for manufacturing a high strength fire resistant glass as claimed in claim 1, wherein: the spraying system comprises a pipeline, the pipeline is arranged in the air grid body and communicated with the atomizing nozzle, a saline solution is injected into the pipeline, and the saline solution is atomized by the atomizing nozzle and then is sprayed to the surface of the glass.

6. An energy efficient apparatus for manufacturing a high strength fire resistant glass as claimed in claim 1, wherein: the automatic steel plate feeding and tempering device is characterized by further comprising a feeding roller way conveying line and a discharging roller way conveying line, wherein the discharging roller way conveying line is connected with a cooling and tempering device, and the feeding roller way conveying line is connected with a heating device.

7. An energy-saving method for manufacturing high-strength fireproof glass is characterized in that: the method comprises the following steps:

the glass is heated at high temperature by a heating device, and the heated glass is conveyed to a cooling and tempering device for cooling;

in the cooling stage, the spraying system is started before the cooling air system, the working time of the spraying system is less than 1 second, the salt solution in the injection pipeline is atomized by the atomizing nozzle and then sprayed to the surface of the glass in the working time of the spraying system, the cooling air system is started after the working time of the spraying system is over, and the fan blows cooling air into the cooling air grid through the air pipe to cool the glass in the working time of the cooling air system.

8. An energy efficient method of making high strength fire resistant glass as in claim 7, wherein: in the working time of the spraying system, the flow of a single atomizing nozzle is 0.03-0.06 Kg/min, the pressure of the atomizing nozzle is 5-8MPa, and the diameter of the atomized particles is 5-10 um.

9. An energy efficient method of making high strength fire resistant glass as in claim 7, wherein: the salt solution is a mixed solution of sylvite, and NaNO is added into the salt solution₃。

10. An energy efficient method of making high strength fire resistant glass as in claim 9, wherein: the salt solution is a mixed solution of potassium nitrate and potassium chloride, and the ratio of potassium nitrate to potassium chloride in the mixed solution is 1: 1.

Technical Field

The invention relates to the technical field of fireproof glass manufacturing, in particular to energy-saving equipment and a method for manufacturing high-strength fireproof glass.

Background

The principle of physical tempering is that glass is heated to a proper temperature and then rapidly cooled to enable the surface of the glass to shrink rapidly to generate compressive stress, while the middle layer of the glass is cooled slowly and cannot shrink in time, and the inner layer generates tensile stress to enable the glass to obtain higher strength. Generally, the higher the cooling strength, the greater the glass strength. Quenching of fire-proof glass is the most important part of the glass processing process and plays a decisive role in the formation of the final stress of the glass. The basic requirement for quenching glass is to cool the glass uniformly at a desired cooling rate to achieve a uniform distribution of stress in the glass.

The sodium-calcium-silicon monolithic fire-proof glass for buildings generally requires that the surface compressive stress is more than 180MPa, the heat exchange speed between a cooling medium and the glass plays a decisive role in the quenching tempering process, and the higher the heat conductivity coefficient of the cooling medium is, the higher the tempering degree of the glass is; the lower the temperature of the cooling medium, the higher the degree of tempering. Therefore, to obtain such high surface stress, the fire-proof glass needs high wind pressure and large wind amount during quenching, which increases the power of the fan, resulting in high unit energy consumption and large power consumption of the fire-proof glass.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide an energy-saving apparatus and method for manufacturing high-strength fire-resistant glass, comprising a heating device and a cooling tempering device connected to each other:

the cooling tempering device comprises a cooling air system, a spraying system and a cooling air grid, the cooling air grid comprises two parts of air grids which are installed oppositely and have the same structure, cooled glass moves between the two parts of air grids, each part of air grid comprises an air grid body, an atomizing nozzle and an air nozzle, the atomizing nozzle and the air nozzle are arranged on the plane of the air grid body facing to the glass direction, the air nozzles are connected with the cooling air system, and the atomizing nozzle is connected with the spraying system.

Technical scheme more than adopting, atomizing nozzle and tuyere stagger the setting on the plane of air grid body towards glass direction.

According to the technical scheme, the cooling air system comprises a fan, an air pipe and an air inlet, the air inlet communicated with the air nozzle is formed in the side wall of the air grid body, and the air inlet is connected with the fan through the air pipe.

Technical scheme more than adopting, the cooling air system includes the circulating water cooling section, the circulating water cooling section includes the coil pipe be equipped with the coil pipe in the tuber pipe, the coil pipe inner loop has the cooling water.

Technical scheme more than adopting, spraying system includes the pipeline, is equipped with the pipeline at this internal in air grid, and the pipeline link up with atomizing nozzle, injects the salt solution in the pipeline, and the salt solution sprays to the glass surface after atomizing nozzle.

Technical scheme more than adopting still includes material loading roller way transfer chain and unloading roller way transfer chain, cooling tempering device is connected to unloading roller way transfer chain, material loading roller way transfer chain connects heating device.

Another object of the present invention is to provide a method for manufacturing a high-strength fire-resistant glass, comprising:

the glass is heated at high temperature by a heating device, and the heated glass is conveyed to a cooling and tempering device for cooling;

in the cooling stage, the spraying system is started before the cooling air system, the working time of the spraying system is less than 1 second, the salt solution in the injection pipeline is atomized by the atomizing nozzle and then sprayed to the surface of the glass in the working time of the spraying system, the cooling air system is started after the working time of the spraying system is over, and the fan blows cooling air into the cooling air grid through the air pipe to cool the glass in the working time of the cooling air system.

By adopting the technical scheme, in the working time of the spraying system, the flow of a single atomizing nozzle is 0.03-0.06 Kg/min, the pressure of the atomizing nozzle is 5-8MPa, and the diameter of the atomized particles is 5-10 um.

By adopting the technical scheme, the salt solution is a mixed solution of sylvite, and NaNO is added into the salt solution₃。

By adopting the technical scheme, the salt solution is a mixed solution of potassium nitrate and potassium chloride, and the ratio of potassium nitrate to potassium chloride in the mixed solution is 1: 1.

The invention has the beneficial effects that: the invention adopts a mode of combining spray cooling and air cooling, can achieve the effect of extremely fast cooling through the cooling effect of liquid spray and the reduction of the temperature of an air medium, can also generate higher surface stress on the surface of the glass on the premise of not increasing the power of a fan, solves the problem of high unit energy consumption of the fireproof glass, and obtains good energy-saving and consumption-reducing effects.

Drawings

FIG. 1 is a schematic structural diagram of an energy-saving apparatus and method for manufacturing high-strength fire-resistant glass according to the present invention.

Fig. 2 is a partial structural schematic diagram of the cooling tempering device.

Fig. 3 is a schematic structural view of the cooling air grid of the present invention.

FIG. 4 is a schematic view of the flat glass-facing surface of the cooling air grid of the present invention.

FIG. 5 is a table of data relating to the conventional process for a 6mm single sheet of fire-resistant glass according to example 1 of the present invention and the process according to the present invention.

FIG. 6 is a table of data relating to the conventional process for making a 5mm single sheet of fire-resistant glass according to example 2 of the present invention and the process according to the present invention.

The reference numbers in the figures illustrate: 1. a heating device; 2. cooling and tempering the device; 211. a fan; 212. an air duct; 213. an air inlet; 214. a circulating water cooling section; 221. a pipeline; 23. cooling the air grid; 231. a wind grid body; 232. an atomizing nozzle; 234. a tuyere; 3. a feeding roller way conveying line; 4. unloading roll table transfer chain.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1 to 4, the invention provides energy-saving equipment and a method for manufacturing high-strength fireproof glass, and the equipment comprises a feeding roller way conveying line 3, a heating device 1, a cooling and toughening device 2 and a discharging roller way conveying line 4 which are sequentially connected, wherein glass fiber reinforced plastics are conveyed to the heating device 1 through the feeding roller way conveying line 3 to be heated at high temperature, the heated glass is conveyed to the cooling and toughening device 2 to be cooled, and the glass which is cooled is discharged through the discharging roller way conveying line 4. The heating device 1 may be a high temperature heating furnace or a high temperature heating box, and may be a heating device 1 with other structures, which the present invention is not limited to.

Wherein cooling tempering device 2 includes the cooling air system, atomizing system and cooling air grid 23, cooling air grid 23 includes relative installation and the same two parts air grid of structure, by the motion of cooling glass between the two, every part air grid includes air grid body 231, atomizing nozzle 232 and tuyere 234, stagger on the plane of air grid body 231 orientation glass direction and be provided with atomizing nozzle 232 and tuyere 234, tuyere 234 connects the cooling air system, be used for realizing air cooling after the cooling air system starts, atomizing nozzle 232 connects atomizing system, be used for realizing spray cooling after atomizing system starts, adopt the mode that spray cooling and air cooling combined together, cooling effect and the reduction of air medium temperature through liquid spraying, can reach the effect of utmost speed cooling.

Specifically, on one hand, the cooling air system includes a fan 211, an air pipe 212 and an air inlet 213, the air inlet 213 communicated with the air nozzle 234 is disposed on the side wall of the air grid body 231, and the air inlet 213 is connected to the fan 211 through the air pipe 212. After the blower 211 is started, air is blown into the cooling air grid 23 through the air pipe 212 for air cooling.

On the other hand, the spraying system comprises a pipeline 221, the pipeline 221 is arranged in the air grid body 231, the pipeline 221 is communicated with the atomizing nozzle 232, the saline solution is injected into the pipeline 221, the saline solution is atomized by the atomizing nozzle 232 and then sprayed to the surface of the glass, the water mist is continuously sprayed to the surface of the heated glass in a very short time, the atomized water in the particle state absorbs heat rapidly to become water with the temperature of 100 ℃ and is gasified due to the fact that the specific heat and the vaporization heat of the water are high, the heat energy on the surface of the glass can be taken away instantly, and the pressure stress is formed on the surface of the.

Referring to fig. 3 and 4, the atomizing nozzles 232 are uniformly arranged on the plane of the air grid body 231 facing the glass direction, so that when the spraying system works, the salt solution is uniformly sprayed to the surface of the glass after being atomized by the atomizing nozzles 232, so that the spraying liquid uniformly cools the glass, the glass obtains uniformly distributed stress, and the yield is remarkably improved.

In order to further reduce the temperature of the air medium. The cooling air system of the present embodiment includes a circulating water cooling section 214, the circulating water cooling section 214 includes a coil pipe, the coil pipe is disposed in the air pipe 212, and cooling water circulates in the coil pipe. In practice, the cooling water is preferably ground water, and the temperature of the air medium in the ductwork 212 is lowered by introducing ground water. For example, the temperature of the groundwater in summer is about 20 ℃, at this time, the temperature of the air medium in the air pipe 212 can be reduced by 15-20 ℃, and the lower the temperature of the air medium is, the higher the cooling degree is, and the better the cooling effect is.

In summary, the present invention adopts a combination of spray cooling and air cooling, and can achieve an extremely rapid cooling effect through the cooling effect of liquid spray and the reduction of the temperature of the air medium, and on the premise of not increasing the power of the blower 211, a higher surface stress can be generated on the glass surface, thereby solving the problem of high unit energy consumption of the fireproof glass, and obtaining good energy saving and consumption reduction effects.

The invention relates to a method for manufacturing high-strength fireproof glass, which comprises the following steps:

firstly, the glass is heated at high temperature by the heating device 1, and the heated glass is conveyed to the cooling and tempering device 2 for cooling.

Then in the cooling stage, the spraying system is started before the cooling air system, the working time of the spraying system is less than 1 second, and the glass is sprayed and cooled within the working time of the spraying system; and after the working time of the spraying system is over, starting the cooling air system to cool the glass in air.

Illustratively, the flow rate of a single atomizing nozzle 232 is 0.03-0.06 Kg/min, the pressure of the atomizing nozzle 232 is 5-8MPa, and the diameter of the atomized particles is 5-10um, so that a better atomizing effect can be realized. Preferably, the flow rate of the single atomizing nozzle 232 is 0.05 Kg/min, the pressure of the atomizing nozzle 232 is 7MPa, and the diameter of the atomized particles is 8 um.

Illustratively, in the glass cooling stage, firstly, saline solution is injected into the air grid body 231, the saline solution in the injection pipeline 221 is atomized by the atomizing nozzle 232 and then sprayed onto the surface of the glass, the saline solution is a mixed solution of potassium salt, preferably, the saline solution is a mixed solution of potassium nitrate and potassium chloride, the ratio of potassium nitrate to potassium chloride in the mixed solution is 1:1, the flow rate of the single atomizing nozzle 232 is 0.05 Kg/min, the pressure of the atomizing nozzle 232 is 7MPa, the atomizing cooling time is less than 1 second, after the atomizing time is over, the fan 211 is started, and cooling air is blown into the cooling air grid 23 through the air pipe 212 to cool the glass in air. The invention adopts a mode of firstly spraying and cooling and then cooling by air, on one hand, water mist is continuously sprayed on the surface of heated glass in a very short time, and because the specific heat and the vaporization heat of water are higher, atomized water in particle form quickly absorbs heat to become water with the temperature of 100 ℃ and is gasified, the heat energy on the surface of the glass can be instantly taken away, and the effect of very quick cooling is achieved by liquid spraying, thereby the invention has the advantages of quick cooling, simple structure, convenient operation, low cost and high safetyThe temperature of the air medium is reduced, and on the premise of not increasing the power of the fan 211, higher surface stress can be generated on the surface of the glass, so that the problem of high unit energy consumption of the fireproof glass is solved, and good energy-saving and consumption-reducing effects are achieved; on the other hand, the salt solution is a mixed solution of potassium nitrate and potassium chloride, which is not only beneficial to forming toughening stress and improving the glass toughening degree, but also can improve the microcracks on the glass surface through the ion filling effect, and further improves the glass strength. When the atomized salt solution acts on the surface of the glass, a high-temperature environment is needed, namely, when the atomized salt solution acts, the temperature of the glass per se is higher, and a better effect can be achieved. Therefore, when the glass enters the cooling stage after being heated at high temperature, the atomized salt solution needs to be sprayed on the surface of the high-temperature glass, and at the moment, the temperature of the glass is high, and the effect of the atomized salt solution is good. Also adding NaNO into the salt solution₃The effect of (2) is better.

Two examples are specifically set forth below.

Example 1

In the energy-saving equipment and the method for continuously manufacturing the high-strength fireproof glass, the installed capacity of a fan 211 of a cooling and tempering device 2 is 630 KW. FIG. 5 shows data relating to a conventional process for making a single sheet of fire-resistant 6mm glass and a process of the present invention.

From FIG. 5, it is found that the energy consumption of the 6mm fireproof glass per unit product is 4.15kW.h/m according to the conventional process²The surface stress is 165 MPa; the energy consumption of the 6mm fireproof glass unit product is 3.45kW.h/m²The surface stress was 185 MPa. Therefore, compared with the prior art, the energy consumption of the 6mm fireproof glass per square meter of the process is reduced to 3.45kW.h/m²The surface stress of the fireproof glass is improved to 20 Mpa.

It should be noted that the energy consumption Eg per unit glass product is obtained by the following calculation:

Eg＝e/pg

eg-energy consumption of glass unit product, unit kW.h/m²；

e, energy consumption of glass products with the same thickness and the same type produced by the same glass production line in a statistical period, wherein the unit kW.h is;

pg-yield per m of qualified glass products of the same thickness and the same type produced by the same glass production line in the statistical period²。

Example 2

In the energy-saving equipment and the method for continuously manufacturing the high-strength fireproof glass, the installed capacity of a fan 211 of a cooling and tempering device 2 is 630 KW. FIG. 6 shows data relating to a conventional process for making a single sheet of 5mm fire-resistant glass and a process of the present invention.

From FIG. 6, it is found that the energy consumption of the 5mm fireproof glass per unit product is 4.30kW.h/m according to the conventional process²The surface stress is 150 MPa; the energy consumption of the 6mm fireproof glass unit product is 3.50kW.h/m²The surface stress was 180 MPa. Therefore, compared with the prior art, the energy consumption of the 5mm fireproof glass per square meter of the process is reduced to 3.50kW.h/m²The surface stress of the fireproof glass is improved to about 30 Mpa.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.