阅读说明：本技术 卷材退火的喷口装置 (Nozzle device for annealing coiled material ) 是由 黄宗南 曹炼 陆云鹏 于 2019-11-09 设计创作，主要内容包括：本发明公开了一种卷材退火的喷口装置,适用于典型规格卷材退火处理,该喷口装置位于炉膛两侧导流箱上,通过螺栓与垂直导流箱体固定；喷口布置采用菱形布置形式,所有喷口布置在典型料卷的内外径区域中；每个喷口采用薄壁钢管冲压成型,钢管冲压后一端为扩口弧形面。该装置可以有效的缩小料卷在升温阶段的内外圈温差,同时也提高了料卷的加热速度,缩短了退火时间,节能降耗效果明显。(The invention discloses a nozzle device for annealing coiled materials, which is suitable for annealing treatment of coiled materials with typical specifications, and is positioned on flow guide boxes on two sides of a hearth and fixed with a vertical flow guide box body through bolts; the nozzle arrangement adopts a rhombic arrangement form, and all the nozzles are arranged in the inner diameter area and the outer diameter area of a typical material roll; each nozzle is formed by punching a thin-wall steel pipe, and one end of the punched steel pipe is a flaring arc-shaped surface. The device can effectively reduce the temperature difference between the inner ring and the outer ring of the material roll in the temperature rising stage, simultaneously improve the heating speed of the material roll, shorten the annealing time and have obvious energy-saving and consumption-reducing effects.)

1. The utility model provides a spout device of coiled material annealing which characterized in that includes spout (5) and perpendicular water conservancy diversion case (4), its characterized in that: the vertical flow guide box (4) is vertically arranged at the bottom of the annealing furnace, a series of nozzles (5) are arranged on the vertical flow guide box (4), the injection directions of the nozzles (5) face the end face of a coiled material (8) loaded in the annealing furnace, a nozzle bottom plate (6) is arranged on the vertical flow guide box (4), the nozzles (2) are all fixed on the nozzle bottom plate (6), and the nozzle bottom plate (6) is fixed on the vertical flow guide box (4) through bolts (7), so that the nozzles (2) are arranged on the vertical flow guide box (4); the coiled material (8) is arranged on the sleeve (9), and the coiled material (8) is placed in an annealing furnace, so that the end part of the sleeve (9) faces the air outlet direction of the nozzle (2); the air outlets of the series of nozzles (5) are combined to form a side-blowing working surface, the arrangement mode of the nozzles (5) adopts a rhombic array arrangement mode, the arrangement positions of all the nozzles (5) correspond to the inner and outer diameter areas of the end surface of the coiled material (8), and the centers of the rhombic arrays are over against the central line of a sleeve (9) of the coiled material (8) subjected to annealing treatment; the tops of vertical guide boxes (4) arranged at two ends of a coiled material (8) are communicated to form a bridge-shaped air passage, a high-temperature circulating fan (1) is arranged at an opening at the bottom of the bridge-shaped air passage at a position right above the coiled material (8), the air inlet side of the high-temperature circulating fan (1) faces towards the coiled material (8), the air outlet side of the high-temperature circulating fan (1) faces towards the inside of the bridge-shaped air passage, and gas in an annealing furnace is sucked into the bridge-shaped air passage; a heating element (2) is arranged in the bridge-shaped air passage or on the middle upper part of the vertical diversion box (4) to heat the passing air and regulate the temperature, a fan fluid director (3) is also arranged in the vertical diversion box (4) to convey the hot air which is heated by the heating element (2) and is regulated and controlled by the temperature to the nozzle (2) to be sprayed out.

2. A nozzle device for annealing coils according to claim 1, characterized in that said nozzle (5) is arranged in a rhombus form: two layers of square nozzles (5) are arranged around the projection circle of the side blowing working surface around the inner diameter of the end surface of the coiled material (8), and the centers of the squares arranged and combined by the two layers of square nozzles (5) are superposed with the center of the projection circle of the inner diameter of the end surface of the coiled material (8) on the side blowing working surface; wherein, spout (5) air outlet jetting direction that spout (5) of the combination of arranging of first layer square is close to the inner edge of coiled material (8) terminal surface, spout (5) of second layer square arrange the combination and are located spout (5) of first layer square arrange the periphery of combination, spout (5) of second layer square arrange the combination the periphery still be equipped with third layer spout (5) and arrange the combination, third layer spout (5) are arranged the combination and are contained four sections linear arrangement's spout (5), each section linear arrangement's of the combination of arranging of third layer spout (5) extension line all is parallel with corresponding spout (5) central line of four sides of the combination of arranging of spout (5) of second layer square.

3. The coil annealing nozzle assembly of claim 2, wherein: a series of nozzles (5) forming the side blowing working surface form a nozzle array, the distance between any two nozzles (5) which are nearest to each other is equal, and the caliber of each nozzle (5) is the same.

4. The coil annealing nozzle assembly of claim 2, wherein: the number of the nozzles (5) arranged and combined by the nozzles (5) of the second layer of square is larger than that of the nozzles (5) arranged and combined by the nozzles (5) of the third layer of square, and the number of the nozzles (5) arranged and combined by the nozzles (5) of the third layer of square is larger than that of the nozzles (5) arranged and combined by the nozzles (5) of the first layer of square.

5. The coil annealing nozzle assembly of claim 2, wherein: the nozzles (5) of the first layer of square are arranged and combined to blow on the inner diameter area mainly acted on (8), and the nozzles (5) of the third layer of square are arranged and combined to blow on the outer diameter area mainly acted on (8).

6. The coil annealing nozzle assembly of claim 1, wherein: each nozzle (5) is formed by punching a thin-wall steel pipe, and the fixed end of the nozzle (5) forms a flaring arc-shaped structure after punching.

7. The coil annealing nozzle assembly of claim 1, wherein: each nozzle (5) is fixedly connected with the nozzle bottom plate (6) in a welding mode, and the welding line is arranged on the outer side of each nozzle (5).

8. The coil annealing nozzle assembly of claim 1, wherein: the area of the side blowing working surface formed by the combination of the nozzles (5) is smaller than the area of the end surface of the annular coiled material (8) between the inner ring and the outer ring of the coiled material (8).

Technical Field

The invention relates to a coiled material heat treatment device, in particular to a coiled material annealing treatment device, which is applied to the technical field of metal material manual treatment processes.

Background

The annealing of aluminum coils is an important step in the non-ferrous metal industry, in particular in the production process of the aluminum industry, and the process is to rapidly heat the aluminum coils to the required annealing temperature and then preserve the heat for a period of time to complete the annealing process. The main purposes of annealing the aluminum coil are:

1. various tissue defects and residual stress generated in the previous working procedure are improved or eliminated, and deformation or cracking of the coil stock in subsequent processing is prevented;

2. adjusting the mechanical property state of the coiled material so as to carry out next processing;

3. the crystal grains are refined, and the structure is improved to improve the mechanical property of the material.

The core system of the aluminum coil annealing furnace mainly comprises a heating system and a hot air diversion system. The invention mainly aims at optimizing the nozzle device in the hot air flow guiding system, so that the whole hot air flow guiding system can better adapt to the requirement of annealing of the coiled material, and the temperature difference between the inner ring and the outer ring of the coiled material is reduced. The hot air flow guiding system of the aluminum coiled material annealing furnace mainly comprises a high-temperature circulating fan, a heating element, a fan flow guider, a vertical flow guiding box and a nozzle device. The hot air in the furnace is sucked by the high-temperature fan and then blown to the heating elements on the two sides for heat exchange, the heated hot air enters the vertical flow guide boxes on the two sides, the hot air is fully mixed in the flow guide boxes and then blown to the material roll end face through the nozzle device to carry out heat exchange with the material roll, and then the hot air is sucked again through the air suction port of the high-temperature circulating fan, so that one-time convection heat exchange circulation is completed.

Although the traditional end face side blowing or nozzle device can realize the functions of heating the end face of the aluminum coil and rapidly heating up, the temperature of the outer ring of the aluminum coil is higher than the temperature rise speed of the inner ring during actual use, and finally a large part of the aluminum coil on the outer ring needs to be removed due to overburning, thereby causing great influence on the yield of products.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to overcome the defects in the prior art, and provides a nozzle device for annealing a coiled material, which further improves the capability of synchronously heating the inner ring and the outer ring of the coiled material in the heating stage on the premise of accelerating the speed of convection circulation in a furnace, thereby preventing the outer ring from being burnt due to overhigh temperature. According to the invention, by adjusting the arrangement form of the nozzles, the temperature difference between the outer ring and the inner ring of the coiled material with typical material specifications is reduced in the annealing temperature rise stage, so that a uniform temperature flow field is formed on the end face of the coiled material, and the problem of overburning of the outer ring is solved.

In order to achieve the purpose of the invention, the invention adopts the following technical scheme:

a nozzle device for annealing coiled materials comprises a nozzle and a vertical flow guide box, wherein the vertical flow guide box is vertically arranged at the bottom of an annealing furnace, a series of nozzles are arranged on the vertical flow guide box, the injection directions of the nozzles face the end face of a coiled material loaded in the annealing furnace, a nozzle bottom plate is arranged on the vertical flow guide box, the nozzles are all fixed on the nozzle bottom plate, and the nozzle bottom plate is fixed on the vertical flow guide box through bolts, so that the nozzles are arranged on the vertical flow guide box; the coiled material is arranged on the sleeve, and the coiled material is placed in the annealing furnace, so that the end part of the sleeve faces the air outlet direction of the nozzle; the air outlets of the series of nozzles are combined to form a side-blowing working surface, the nozzle arrangement mode adopts a rhombic array arrangement mode, the arrangement positions of all the nozzles correspond to the inner and outer diameter areas of the end surface of the coiled material, and the centers of the rhombic arrays are over against the central line of a sleeve of the coiled material subjected to annealing treatment; the top parts of the vertical guide boxes arranged at the two ends of the coiled material are communicated to form a bridge-shaped air passage, the bottom of the bridge-shaped air passage at the position right above the coiled material is opened, a high-temperature circulating fan is arranged, the air inlet side of the high-temperature circulating fan faces towards the coiled material, the air outlet side of the high-temperature circulating fan faces towards the inside of the bridge-shaped air passage, and the gas in the annealing furnace is sucked into the conveying bridge-shaped air passage; the heating element is arranged in the bridge-shaped air passage or on the middle upper part of the vertical guide box to heat and regulate the temperature of the flowing gas, and the fan flow guider is also arranged in the vertical guide box to convey the hot gas which is heated by the heating element and is regulated and regulated by the temperature to the nozzle for spraying.

As a preferable technical scheme of the invention, two layers of square nozzle arrangement combinations are arranged around the projection circle of the side blowing working surface around the inner diameter of the end surface of the coiled material, and the centers of the squares of the two layers of square nozzle arrangement combinations coincide with the circle center of the projection circle of the inner diameter of the end surface of the coiled material on the side blowing working surface; the spraying and blowing direction of the spraying opening air outlet of the first layer of square spraying opening arrangement combination is close to the inner edge of the end face of the coiled material, the spraying opening arrangement combination of the second layer of square is located on the periphery of the spraying opening arrangement combination of the first layer of square, a third layer of spraying opening arrangement combination is further arranged on the periphery of the spraying opening arrangement combination of the second layer of square, the third layer of spraying opening arrangement combination comprises four sections of spraying openings which are linearly arranged, and the spraying opening extension line of each section of linearly arranged spraying opening arrangement combination of the third layer of spraying opening arrangement combination is parallel to the corresponding spraying opening central connection line of the four sides of the spraying opening arrangement combination of the.

As a preferable technical scheme of the invention, a series of nozzles forming the side blowing working surface form a nozzle array, the distance between any two nozzles which are nearest to each other is equal, and the caliber of each nozzle is the same.

According to the preferable technical scheme, the number of the nozzles of the nozzle arrangement combination of the second layer of square is larger than that of the nozzles of the nozzle arrangement combination of the third layer of square, and the number of the nozzles of the nozzle arrangement combination of the third layer of square is larger than that of the nozzles of the nozzle arrangement combination of the first layer of square.

As a preferable technical scheme of the invention, the first layer of square nozzle arrangement combination side blow mainly acts on the inner diameter area, and the third layer of square nozzle arrangement combination side blow mainly acts on the outer diameter area.

As a preferable technical scheme of the invention, each nozzle is formed by punching a thin-wall steel pipe, and the fixed end of the nozzle forms a flaring arc-shaped structure after punching.

As a preferable technical scheme of the invention, each spout is fixedly connected with the spout bottom plate in a welding mode, and the welding line is arranged on the outer side of the spout.

As a preferable technical scheme of the invention, the area of the side blowing working surface formed by the nozzle combination is smaller than the area of the annular coil end surface between the inner ring and the outer ring of the coil.

Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable advantages:

1. the device enhances the side spraying effect of the end surface quality of the coiled material in the maximum coverage area, each cylindrical nozzle is regularly arranged in the end surface area of the aluminum coil according to a diamond shape, the arrangement rule is that the outer ring needs to be smaller than the outer diameter of the aluminum coil, the number of the nozzles is an intermediate value, the number of the inner rings is the minimum, and the number of the middle rings is the maximum; the heat flow density middle ring sprayed from the nozzle is the largest and is matched with the middle mass of the aluminum coil to the largest extent, and meanwhile, the outer ring nozzle is arranged far away from the outer diameter area of the aluminum coil, so that the phenomenon that the temperature rising speed is too high due to the fact that the outer ring is heated can be effectively prevented, the temperature uniformity of the inner ring and the outer ring in the annealing process is improved, and the problem of overburning of the outer ring is solved;

2. the device of the invention increases the heat exchange time of the airflow on the end surface: the nozzle is arranged to be close to the central circle region of the inner ring and the outer ring of the aluminum coil as much as possible, so that the contact time of air flow and the end face of the aluminum coil can be effectively prolonged, and the heat exchange efficiency can be further improved;

3. the invention is used for annealing aluminum coils with typical specifications, reduces the temperature difference between the inner ring and the outer ring of the aluminum coil in the temperature rise stage, enables the end surface of the coil to form a uniform temperature flow field, shortens the heating time and improves the uniformity of the furnace temperature.

Drawings

Fig. 1 is a schematic structural diagram of a nozzle device for coil annealing in a hot air guiding system according to a first embodiment of the present invention.

Fig. 2 is a front view of the arrangement of the spout assembly according to the first embodiment of the present invention.

Fig. 3 is a side view of the arrangement of the jet unit according to the first embodiment of the present invention.

Fig. 4 is an enlarged sectional view of a single nozzle in the nozzle unit according to the second embodiment of the present invention.

Detailed Description

The above-described scheme is further illustrated below with reference to specific embodiments, which are detailed below: