Furnace nose structure of galvanizing annealing furnace

Abstract

The utility model relates to the technical field of galvanizing annealing furnaces, in particular to a furnace nose structure of a galvanizing annealing furnace, which comprises a base plate, a galvanizing tank is fixed on the upper surface of the base plate, a furnace nose main body is arranged above the base plate, and a zinc steam collecting mechanism is arranged on the upper surface of the furnace nose main body. A temperature maintaining assembly is arranged on the back wall of an inner cavity of the furnace nose body. According to the furnace nose structure of the galvanizing annealing furnace, the zinc steam collecting mechanism is arranged, and the horizontal plate, the collecting box, the box cover, the filter plate, the first connecting pipe, the air suction fan, the second connecting pipe, the air cooler and the cooling pipe jacket are arranged, so that the furnace nose structure has the function of absorbing zinc steam, and the content of the zinc steam in the furnace nose main body is effectively reduced; therefore, zinc steam can be prevented from being cooled to form zinc slag, and the problems that evaporated zinc liquid falls on the surface of the zinc liquid to form zinc slag after being condensed by the furnace wall, zinc slag accumulation is easily generated at the end of the furnace nose, and stable production and efficiency of hot galvanizing are affected are solved.

Description

Technical Field

[0001] The present application relates to the technical field of galvanizing annealing furnaces, and in particular to a furnace nose structure of a galvanizing annealing furnace. Background Art

[0002] Hot dip galvanizing annealing furnace is an important heat treatment equipment, which is widely used in galvanizing industry. It is mainly used for annealing metal sheets before galvanizing. The working principle is to heat the metal sheets to a certain temperature, keep them warm for a certain period of time and then cool them down to achieve the purpose of changing the crystal structure, eliminating stress and improving the quality of the film layer.

[0003] During the hot-dip galvanizing process, zinc slag is usually composed of zinc-iron compounds, iron-aluminum compounds and oxides. Most zinc slag has a density less than that of zinc liquid and floats on the surface of zinc liquid to form scum. During the production process, the zinc slag adheres to the surface of the steel plate as the zinc liquid flows or the rollers rotate, forming zinc slag defects, which seriously affect the surface quality of the galvanized product. The zinc slag may also adhere to the hot-dip galvanizing equipment, affecting the stable operation of the equipment.

[0004] The nose of the furnace is a key part of the hot-dip galvanizing pot and plays a vital role in the surface quality of the product. The steel plate enters the zinc pot through the nose of the furnace, and the end of the nose of the furnace is immersed in the zinc liquid. In addition to the scum on the surface of the zinc liquid, the evaporated zinc liquid condenses on the furnace wall and falls on the surface of the zinc liquid to form zinc slag, which makes it easy for zinc slag to accumulate at the end of the nose of the furnace, affecting the stable production and efficiency of hot-dip galvanizing. Therefore, a nose structure of a galvanizing annealing furnace is proposed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present application provides a nose structure of a galvanizing annealing furnace, which has the advantage of preventing zinc vapor from forming zinc slag when it cools down, and solves the problem that the evaporated zinc liquid will also form zinc slag when it falls on the surface of the zinc liquid after condensing on the furnace wall, causing zinc slag to accumulate easily at the end of the nose, affecting the stable production and efficiency of hot-dip galvanizing.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a furnace nose structure of a galvanizing annealing furnace, comprising a substrate, a galvanizing tank is fixed on the upper surface of the substrate, a furnace nose body is arranged above the substrate, a zinc vapor collecting mechanism is arranged on the upper surface of the furnace nose body, and a temperature maintaining component is arranged on the back wall of the inner cavity of the furnace nose body;

[0007] The zinc vapor collection mechanism includes a horizontal plate fixed on the upper surface of the furnace nose body, a collection box is fixed on the upper surface of the horizontal plate, a box cover is fixed on the upper surface of the collection box by bolts, a filter plate is fixed on the inner bottom wall of the collection box, a first connecting pipe is connected to the left side of the collection box, an air intake fan is fixed on the upper surface of the horizontal plate, an air inlet end of the air intake fan is connected to the second connecting pipe, a cooling air blower is fixed on the upper surface of the horizontal plate, and the outer surface of the collection box is provided with a cooling pipe jacket.

[0008] By adopting this technical solution, the setting of the zinc vapor collecting mechanism reduces the content of zinc vapor inside the furnace nose body, thereby reducing the zinc slag generated by the condensation of zinc vapor.

[0009] Furthermore, the left end of the furnace nose body is connected to the galvanizing annealing furnace, and the right end of the furnace nose body extends into the interior of the galvanizing tank.

[0010] Furthermore, the galvanizing tank is in the shape of a rectangular parallelepiped which is hollow inside and has a missing upper surface, and the furnace nose body is in the shape of a rectangular parallelepiped which is hollow inside and has missing left and right side surfaces.

[0011] Furthermore, one side of the filter plate away from the inner bottom wall of the collection box is fitted with the lower surface of the box cover, and the collection box is shaped like a rectangular block with a hollow interior and a missing upper surface. The output end of the air cooler is connected to a third connecting pipe on the left side of the cooling pipe jacket, and the right side of the cooling pipe jacket is connected to a fourth connecting pipe.

[0012] By adopting this technical solution, the setting of the filter plate can prevent the zinc slag formed by cooling from passing through the filter plate, so that the zinc slag is collected in the collection box.

[0013] Furthermore, one end of the first connecting pipe away from the collecting box is connected to the upper surface of the furnace nose body, and one end of the second connecting pipe away from the suction fan is connected to the right side of the collecting box.

[0014] By adopting this technical solution, the provision of the first connecting pipe enables the zinc vapor in the furnace nose body to be collected into the collection box.

[0015] Furthermore, the air outlet end of the air intake fan is connected to an exhaust pipe, and the collection box is located on the left side of the air intake fan.

[0016] Furthermore, the temperature maintaining component includes a temperature sensor fixedly installed on the back wall of the inner cavity of the furnace nose body, a main controller is fixed on the upper surface of the furnace nose body, and a heating tube is fixedly installed on the inner top wall of the furnace nose body.

[0017] By adopting this technical solution, the temperature maintaining component is set to make the temperature inside the furnace nose body consistent with the temperature of the galvanizing annealing furnace, which can effectively prevent zinc vapor from condensing to form zinc slag.

[0018] Furthermore, the number of the heating tubes is five, and the five heating tubes are equidistantly distributed on the inner top wall of the furnace nose body.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] 1. The nose structure of the galvanized annealing furnace, in which a zinc vapor collecting mechanism is arranged, through the mutual cooperation between the various structures in the zinc vapor collecting mechanism, by arranging a horizontal plate, a collecting box, a box cover, a filter plate, a first connecting pipe, an air suction fan and a second connecting pipe, the nose structure has the function of absorbing zinc vapor, effectively reducing the content of zinc vapor in the main body of the nose, thereby preventing the zinc vapor from forming zinc slag when it is cooled, and solving the problem that the evaporated zinc liquid will form zinc slag when it falls on the surface of the zinc liquid after condensing on the furnace wall, which makes it easy for zinc slag to accumulate at the end of the nose, affecting the stable production and efficiency of hot-dip galvanizing.

[0021] 2. The nose structure of the galvanized annealing furnace is provided with a temperature maintaining component. Through the mutual cooperation among the various structures in the temperature maintaining component, by setting a temperature sensor, a main controller and a heating tube, the temperature inside the nose body is made consistent with the temperature of the galvanized annealing furnace, which can effectively prevent the condensation of zinc vapor to form zinc slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of this application;

[0023] Figure 2 A schematic diagram of the zinc vapor collection mechanism for this application;

[0024] Figure 3 Schematic diagram of the temperature maintenance component for this application.

[0025] In the figure: 1. Base plate; 2. Galvanizing tank; 3. Furnace nose body; 4. Zinc vapor collecting mechanism; 401. Horizontal plate; 402. Collecting box; 403. Box cover; 404. Filter plate; 405. First connecting pipe; 406. Intake fan; 407. Second connecting pipe; 408. Cooling fan; 409. Cooling pipe jacket; 5. Temperature maintaining assembly; 501. Temperature sensor; 502. Main controller; 503. Heating pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] See also Figure 1 A furnace nose structure of a galvanizing annealing furnace in this embodiment includes a substrate 1, a galvanizing tank 2 is fixed on the upper surface of the substrate 1, a furnace nose body 3 is arranged above the substrate 1, a zinc vapor collecting mechanism 4 is provided on the upper surface of the furnace nose body 3, and a temperature maintaining component 5 is provided on the back wall of the inner cavity of the furnace nose body 3.

[0028] The left end of the furnace nose body 3 is connected to the galvanizing annealing furnace, and the right end of the furnace nose body 3 extends into the interior of the galvanizing tank 2.

[0029] The galvanizing tank 2 is in the shape of a rectangular parallelepiped which is hollow inside and has a missing upper surface, and the furnace nose body 3 is in the shape of a rectangular parallelepiped which is hollow inside and has missing left and right side surfaces.

[0030] It should be noted that the components of the present application are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0031] See also Figure 2 In order to reduce the content of zinc vapor in the furnace nose body 3, the zinc vapor collecting mechanism 4 in this embodiment includes a horizontal plate 401 fixed on the upper surface of the furnace nose body 3, a collecting box 402 is fixed on the upper surface of the horizontal plate 401, a box cover 403 is fixed on the upper surface of the collecting box 402 by bolts, a filter plate 404 is fixed on the inner bottom wall of the collecting box 402, the mesh aperture of the filter plate 404 is small, and the zinc slag cannot pass through the filter plate 404 and is finally collected in the collecting box 402, a first connecting pipe 405 is connected to the left side of the collecting box 402, an air intake fan 406 is fixedly installed on the upper surface of the horizontal plate 401, and the air inlet end of the air intake fan 406 is connected to the second connecting pipe 407, a cooling fan 408 is fixedly installed on the upper surface of the horizontal plate 401, and a cooling pipe jacket 409 is provided on the outer surface of the collecting box 402, and the cooling fan 408 is a common device in the prior art.

[0032] The side of the filter plate 404 away from the inner bottom wall of the collection box 402 is fitted with the lower surface of the box cover 403. The collection box 402 is shaped like a rectangular block with a hollow interior and a missing upper surface. The output end of the air cooler 408 is connected to a third connecting pipe, and the other end is connected to the left side of the cooling tube jacket 409. The right side of the cooling tube jacket 409 is connected to a fourth connecting pipe, which is connected to the recovery port of the air cooler 408. The fourth connecting pipe is used to return the exhaust gas to the air cooler 408.

[0033] One end of the first connecting pipe 405 away from the collecting box 402 is connected to the upper surface of the furnace nose body 3, and one end of the second connecting pipe 407 away from the suction fan 406 is connected to the right side of the collecting box 402.

[0034] The air outlet end of the air suction fan 406 is connected to an exhaust pipe, and the collection box 402 is located on the left side of the air suction fan 406 .

[0035] See also Figure 3 In order to make the temperature inside the furnace nose body 3 consistent with the temperature of the galvanizing annealing furnace, the temperature maintaining component 5 in this embodiment includes a temperature sensor 501 fixedly installed on the back wall of the inner cavity of the furnace nose body 3, a main controller 502 is fixed on the upper surface of the furnace nose body 3, and a heating tube 503 is fixedly installed on the inner top wall of the furnace nose body 3. The main structure inside the heating tube 503 is an electric heating wire. The electric heating wire is a resistance wire that can withstand high temperature and has a large heat output and is specially used for generating heat. The main function of the electric heating wire is to generate heat.

[0036] The number of the heating tubes 503 is five, and the five heating tubes 503 are evenly distributed on the inner top wall of the furnace nose body 3 .

[0037] The electrical components appearing in the text are all electrically connected to the main controller 502 and the power supply, and the electrical components appearing in the text are all conventionally known devices, and this application will not go into too much detail. The main controller 502 can be a conventionally known device that plays a control role such as a computer. The control circuit of the main controller 502 can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and this application is mainly used to protect mechanical devices, so this application will not explain the control method and circuit connection in detail.

[0038] The working principle of the above embodiment is:

[0039] (1) After the steel plate is annealed in the galvanizing annealing furnace, it passes through the furnace nose body 3 from the galvanizing annealing furnace to the galvanizing tank 2, and then the annealed steel plate is galvanized. In order to keep the temperature inside the furnace nose body 3 consistent with the temperature of the galvanizing annealing furnace, when the temperature inside the furnace nose body 3 is lower than the set value of the temperature sensor 501, the temperature sensor 501 sends a signal to the main controller 502. After receiving the signal, the main controller 502 starts the heating tube 503 to increase the temperature inside the furnace nose body 3. If the temperature inside the furnace nose body 3 is higher than the set value of the temperature sensor 501, the heating tube 503 does not operate.

[0040] (2) As a result, during the production process, the overall temperature of the furnace nose body 3 is consistent with the temperature of the galvanizing annealing furnace, thereby avoiding the problem of zinc slag being formed when the zinc vapor is cooled, thereby achieving the purpose of suppressing the generation of zinc slag in the furnace nose during the production process. At the same time, when the steel plate passes through the furnace nose body 3, in order to reduce the content of zinc vapor inside the furnace nose body 3, the suction fan 406 is started at this time, and the zinc vapor inside the furnace nose body 3 enters the collection box 402 through the first connecting pipe 405, and the cold air fan 408 is started, and the cold air generated by the cold air fan 408 enters the cooling pipe jacket 409 through the third connecting pipe and flows in the cooling pipe jacket 409. The cooling box 402 is cooled by the cooling tube jacket 409. Since the temperature of the collection box 402 is lower than that of the furnace nose body 3, the zinc vapor forms zinc slag after being cooled. At the same time, the mesh aperture of the filter plate 404 is small, and the zinc slag cannot pass through the filter plate 404 and is finally collected in the collection box 402. Since the collection box 402 and the box cover 403 are detachably connected, in order to prevent the zinc slag from clogging the filter plate 404, it is necessary to open the box cover 403 regularly and perform regular maintenance on the filter plate 404 to prevent clogging. By reducing the content of zinc vapor inside the furnace nose body 3, the formation of zinc slag is reduced, thereby improving the galvanizing effect.

Claims

1. A nose structure of a galvanizing annealing furnace, comprising a base plate (1), characterized in that: A galvanizing tank (2) is fixed on the upper surface of the base plate (1); a furnace nose body (3) is arranged above the base plate (1); a zinc vapor collecting mechanism (4) is arranged on the upper surface of the furnace nose body (3); and a temperature maintaining component (5) is arranged on the back wall of the inner cavity of the furnace nose body (3); The zinc vapor collection mechanism (4) comprises a horizontal plate (401) fixed to the upper surface of the furnace nose body (3); a collection box (402) is fixed to the upper surface of the horizontal plate (401); a box cover (403) is fixedly installed on the upper surface of the collection box (402) by bolts; a filter plate (404) is fixed to the inner bottom wall of the collection box (402); a first connecting pipe (405) is connected to the left side of the collection box (402); an air intake fan (406) is fixedly installed on the upper surface of the horizontal plate (401); an air inlet end of the air intake fan (406) is connected to the second connecting pipe (407); a cooling fan (408) is fixedly installed on the upper surface of the horizontal plate (401); and a cooling pipe jacket (409) is provided on the outer surface of the collection box (402).

2. The nose structure of a galvanizing annealing furnace according to claim 1, characterized in that: The left end of the furnace nose body (3) is connected to the galvanizing annealing furnace, and the right end of the furnace nose body (3) extends into the interior of the galvanizing tank (2).

3. The nose structure of a galvanizing annealing furnace according to claim 1, characterized in that: The galvanizing tank (2) is in the shape of a rectangular parallelepiped which is hollow inside and has a missing upper surface, and the furnace nose body (3) is in the shape of a rectangular parallelepiped which is hollow inside and has missing left and right side surfaces.

4. The nose structure of a galvanizing annealing furnace according to claim 1, characterized in that: The side of the filter plate (404) away from the inner bottom wall of the collection box (402) is fitted with the lower surface of the box cover (403); the collection box (402) is in the shape of a rectangular parallelepiped with a hollow interior and a missing upper surface; the output end of the air cooler (408) is connected to a third connecting pipe, the other end of which is connected to the left side of the cooling pipe jacket (409); and the right side of the cooling pipe jacket (409) is connected to a fourth connecting pipe.

5. The nose structure of a galvanizing annealing furnace according to claim 1, characterized in that: One end of the first connecting pipe (405) away from the collecting box (402) is connected to the upper surface of the furnace nose body (3), and one end of the second connecting pipe (407) away from the suction fan (406) is connected to the right side of the collecting box (402).

6. The nose structure of a galvanizing annealing furnace according to claim 1, characterized in that: The air outlet end of the air intake fan (406) is connected to an exhaust pipe, and the collection box (402) is located on the left side of the air intake fan (406).

7. The nose structure of a galvanizing annealing furnace according to claim 1, characterized in that: The temperature maintaining component (5) comprises a temperature sensor (501) fixedly mounted on the back wall of the inner cavity of the furnace nose body (3), a main controller (502) is fixedly mounted on the upper surface of the furnace nose body (3), and a heating tube (503) is fixedly mounted on the inner top wall of the furnace nose body (3).

8. The nose structure of a galvanizing annealing furnace according to claim 7, characterized in that: The number of the heating tubes (503) is five, and the five heating tubes (503) are equidistantly distributed on the inner top wall of the furnace nose body (3).

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