Linear cooling hot air internal circulation annealing device

Abstract

The utility model provides a linear cooling hot air internal circulation annealing device which comprises an air supply duct and is characterized in that the air supply duct is of a hollow structure welded by a steel structure, a fan is arranged at the upper end of the air supply duct, one end of the central position of the fan is connected with a motor through a rotating shaft, and an air inlet is formed in the other end, opposite to the rotating shaft, of the fan; the air distribution grooves are symmetrically formed in the lower end of the air supply duct, the air outlet grooves are formed in the air distribution grooves, the through holes are formed in the air outlet grooves, and the galvanized steel sheet can be efficiently cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of galvanized steel plate manufacturing, in particular to a linear cooling hot air internal circulation annealing device. Background Art

[0002] After the galvanized steel sheet is heated in the annealing kiln, it needs to be cooled down. The cooling is usually done by a single row fan, which has poor cooling effect and is not obvious. Utility Model Content

[0003] The purpose of the utility model is to provide a linear cooling hot air internal circulation annealing device in order to solve the above problems, so as to solve the problem that the galvanized steel plate cools slowly and the cooling is uncontrollable in the prior art.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a linear cooling hot air internal circulation annealing device, including an air supply duct, characterized in that: the air supply duct is a hollow structure welded by a steel structure, a fan is arranged at the upper end of the air supply duct, one end of the fan at the center position is connected to the motor through a rotating shaft, an air inlet is arranged at the other end of the fan relative to the rotating shaft, and air distribution slots are symmetrically arranged at the lower end of the air supply duct, a plurality of air outlet slots are arranged on the air distribution slots, and a plurality of through holes are arranged on the air outlet slots.

[0005] Preferably, the through holes are arranged along the top of the air outlet slot, and the through holes are circular, elliptical, polygonal, or a combination of multiple shapes.

[0006] Preferably, a contracted air gathering groove is provided at the contact position between the air outlet groove and the air distribution groove.

[0007] Preferably, gaps are provided between adjacent air outlet slots.

[0008] Preferably, a filter is provided on the air inlet.

[0009] Preferably, the air supply duct is interrupted and a heating chamber is provided.

[0010] The utility model provides a device for preparing aluminum sulfate solution, which has the following beneficial effects:

[0011] 1. Since air is supplied to the upper and lower parts of the galvanized steel plate, the upper and lower parts of the galvanized steel plate are both exposed to wind, and there will be no problem of inconsistent cooling of the upper and lower parts of the galvanized steel plate, so that the galvanized steel plate meets the conditions of linear cooling and realizes linear cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the air duct structure of the utility model. DETAILED DESCRIPTION

[0014] The embodiment of the utility model provides a device for preparing aluminum sulfate solution.

[0015] See also Figure 1-Figure 2 , a linear cooling hot air internal circulation annealing device, comprising an air supply duct 1, characterized in that: the air supply duct 1 is a hollow structure welded by a steel structure, a fan 4 is arranged at the upper end of the air supply duct 1, one end of the center position of the fan 4 is connected to the motor 6 through a rotating shaft 5, and an air inlet 2 is arranged at the other end of the fan 4 relative to the rotating shaft 5, and air distribution slots 8 are symmetrically arranged at the lower end of the air supply duct 1, and a plurality of air outlet slots 9 are arranged on the air distribution slot 8, and a plurality of through holes are arranged on the air outlet slot 9, and the through holes are arranged along the top of the air outlet slot 9, and the through holes are one or more combinations of circular, elliptical, and polygonal shapes, and a contracted air gathering slot 10 is arranged at the contact position between the air outlet slot 9 and the air distribution slot 8, and a gap is arranged between adjacent air outlet slots 9, a filter screen 3 is arranged on the air inlet 2, and a heating chamber 7 is arranged in the interruption of the air supply duct 1.

[0016] The entire annealing device is arranged horizontally along the galvanized steel strip, and support rollers are arranged between adjacent devices to support the steel strip. At the same time, air distribution slots 8 are arranged above and below the steel strip. The distance between the air distribution slots 8 and the steel strip is equal. At the same time, gaps are arranged between the air outlet slots 9 designed on the air distribution slots 8, so that exhaust can be effectively carried out. The low-temperature air contacts the galvanized steel strip, takes away the heat of the galvanized steel strip, and then is discharged from the gaps between the air outlet slots 9. The exhausted hot air is sucked into the fan 4 through the air inlet 2, and the galvanized steel strip is cooled again, thereby achieving the purpose of hot air circulation cooling. Compared with the mode in which the air inlet 2 of the fan 4 is designed outdoors, it can effectively prevent the galvanized steel strip from being cooled to a large extent in the high temperature area and causing stress concentration.

[0017] Of course, if the temperature drops rapidly, the heating chamber 7 inside the air supply duct 1 can be opened to heat the air to achieve the purpose of linear cooling.

[0018] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A linear cooling hot air internal circulation annealing device, comprising an air supply duct (1), characterized in that: The air supply duct (1) is a hollow structure welded from a steel structure. A fan (4) is arranged at the upper end of the air supply duct (1). One end of the fan (4) at the center is connected to a motor (6) via a rotating shaft (5). An air inlet (2) is arranged at the other end of the fan (4) relative to the rotating shaft (5). Air distribution slots (8) are symmetrically arranged at the lower end of the air supply duct (1). A plurality of air outlet slots (9) are arranged on the air distribution slots (8), and a plurality of through holes are arranged on the air outlet slots (9).

2. A linear cooling hot air internal circulation annealing device according to claim 1, characterized in that: The through holes are arranged along the top of the air outlet slot (9), and the through holes are circular, elliptical, polygonal, or a combination of multiple shapes.

3. The linear cooling hot air internal circulation annealing device according to claim 1, characterized in that: A contracted air gathering groove (10) is provided at the contact position between the air outlet groove (9) and the air distribution groove (8).

4. The linear cooling hot air internal circulation annealing device according to claim 1, characterized in that: Gaps are provided between adjacent air outlet slots (9).

5. The linear cooling hot air internal circulation annealing device according to claim 1, characterized in that: A filter screen (3) is provided on the air inlet (2).

6. The linear cooling hot air internal circulation annealing device according to claim 1, characterized in that: A heating chamber (7) is provided in the interruption of the air supply duct (1).

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