A dust scraping device for batch hot-dip galvanizing

A hot-dip galvanizing, batch technology, applied in hot-dip galvanizing process, coating, metal material coating process, etc., can solve the problem of hindering the movement of the scraper, the size of the workpiece to be plated, the complexity of the shape, the inclusion of zinc particles, etc. problem, to achieve the effect of precision

Active Publication Date: 2018-05-11
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In production practice, traditional manual ash removal has three significant disadvantages: ① It is difficult to stably control the depth of the zinc rake into the zinc bath, the speed of ash removal is uneven, there are many zinc particles in the zinc ash, and the ash production is high. Large waste of zinc; ②Many people are occupied and work efficiency is low; ③Workers are in close contact with zinc baths, which affects their physical and mental health
Chinese patent (patent number: ZL90200624.X) and Chinese patent (notification number: CN 102494544 A) respectively disclose a scraper slag removal machine, and Chinese patent (patent number: ZL 200510042376.X) discloses a ladle float The slag removal method, the liquid level environment and the operation process of the front and rear processes of these patented technologies are far from the batch hot-dip galvanizing process, and there is little significance for mutual reference.
Chinese patent (patent number: ZL 201020223710.8) discloses a device for cleaning impurities on the surface of the galvanized liquid surface, which consists of two sets of heat preservation devices and impurity scrapers. The plate is fixed on the heat preservation device and can rotate around a pin shaft to 1 cm below the zinc liquid surface. When the heat preservation device moves along the guide rails on both sides of the zinc pot under the drive of the hoist, the scraper scrapes the zinc ash to the end of the zinc pot In the receiving tank of the lower part; with this patented technology, the zinc ash on the surface of the zinc bath can be cleaned before the workpiece is dipped, but the hanger is still above the zinc pot when the workpiece enters the zinc bath after dipping, so that the hanger The connecting steel wire or steel cable between the workpiece and the workpiece hinders the movement of the scraper; and with the continuous increase of zinc consumption, the zinc bath liquid level in the zinc pot continues to drop, and it is necessary to replenish zinc ingots in the zinc bath or adjust the scraper in time height position, which is impossible in actual production
[0004] However, due to the complexity of the size and shape of the workpiece to be plated, the limited operating space, and the discontinuity of the batch hot-dip galvanizing process, manual dusting has been used for 300 years since the invention of hot-dip galvanizing.

Method used

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  • A dust scraping device for batch hot-dip galvanizing
  • A dust scraping device for batch hot-dip galvanizing
  • A dust scraping device for batch hot-dip galvanizing

Examples

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Effect test

Embodiment 1

[0028]The dust scraping device for batch hot-dip galvanizing described in this embodiment includes an electric trolley 1, an electric push rod 2, a reduction motor 3, a rotating shaft 4, a scraper 5 and an infrared detector 6, and the lower end of the electric push rod 2 is fixed on the electric trolley 1, the deceleration motor 3 is fixed on the upper end of the electric push rod 2; the output shaft of the deceleration motor 3 is connected with the rotating shaft 4, and the scraper 5 and the infrared detector 6 are installed under the rotating shaft 4; the probe 61 of the infrared detector 6 and the scraper The board face 51 of plate 5 is on a plane; The board face width of scraper 5 is 5 centimeters larger than half of the zinc pot width. The distance from the probe of the infrared detector 6 to the surface of the zinc bath is 2 mm smaller than the distance from the probe of the infrared detector 6 to the lowermost edge of the scraper 5 during the ashing operation. When the ...

Embodiment 2

[0031] The dust scraping device for batch hot-dip galvanizing described in this embodiment includes an electric trolley 1, an electric push rod 2, a reduction motor 3, a rotating shaft 4, a scraper 5 and an infrared detector 6, and the lower end of the electric push rod 2 is fixed on the electric trolley 1, the deceleration motor 3 is fixed on the upper end of the electric push rod 2; the output shaft of the deceleration motor 3 is connected with the rotating shaft 4, and the scraper 5 and the infrared detector 6 are installed under the rotating shaft 4; the probe 61 of the infrared detector 6 and the scraper The plate surface 51 of the plate 5 is on a plane; the plate surface width of the scraper 5 is 10 centimeters larger than half of the zinc pot width. The distance from the probe of the infrared detector 6 to the surface of the zinc bath is 1 mm smaller than the distance from the probe of the infrared detector 6 to the bottom edge of the scraper 5 during the dusting operati...

Embodiment 3

[0034] The dust scraping device for batch hot-dip galvanizing described in this embodiment includes an electric trolley 1, an electric push rod 2, a reduction motor 3, a rotating shaft 4, a scraper 5 and an infrared detector 6, and the lower end of the electric push rod 2 is fixed on the electric trolley 1, the deceleration motor 3 is fixed on the upper end of the electric push rod 2; the output shaft of the deceleration motor 3 is connected with the rotating shaft 4, and the scraper 5 and the infrared detector 6 are installed under the rotating shaft 4; the probe 61 of the infrared detector 6 and the scraper The board face 51 of plate 5 is on a plane; The board face width of scraper 5 is 8 centimeters larger than half of the zinc pot width. The distance from the probe of the infrared detector 6 to the surface of the zinc bath is 1.5 mm smaller than the distance from the probe of the infrared detector 6 to the lowermost edge of the scraper 5 during the dusting operation; when t...

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Abstract

The invention discloses an ash scraping device for batched hot-dip galvanizing, and belongs to the technical field of hot-dip galvanizing. The ash scraping device comprises an electric trolley, an electric push rod, a speed reduction motor and a rotating shaft, wherein one end of the electric push rod is fixed to the electric trolley, the other end of the electric push rod is connected to the speed reduction motor, the speed reduction motor is driven to be lifted vertically through extension of the electric push rod, and an output shaft of the speed reduction motor is connected to the rotating shaft; a scraper blade and an infrared detector are fixed to the rotating shaft, and the blade width of the scraper blade is greater than a half of the width of a zinc pot by 5-10 centimeters. Ash scraping devices are used in a paired mode when used for removing ash and are arranged on guide rails on the two sides in the length direction of the zinc pot respectively. The ash scraping device has the advantage that mechanical operation of removing the ash on the surface of a zinc bath in the batched hot-dip galvanizing process can be realized, and traditional ash removal can be replaced.

Description

technical field [0001] The invention relates to a dust-scraping device for batch hot-dip galvanizing, which belongs to the technical field of hot-dip galvanizing. Background technique [0002] During hot-dip galvanizing in batches, the zinc pot is an open system, the zinc bath is in direct contact with the atmosphere, the metal zinc reacts with the oxygen in the atmosphere to form zinc oxide and floats on the surface of the zinc solution; when the workpiece is dipped, the zinc chloride on the surface of the workpiece The scum produced by the thermal decomposition of the ammonium-assisted plating salt film also floats on the surface of the zinc bath, which is the main source of zinc dust in the production process of hot-dip galvanizing. During hot-dip galvanizing in batches, the dipping of the workpiece is intermittent. Before dipping, the zinc ash on the surface of the zinc bath is manually scraped to the end of the zinc pot with a dust rake, and the mirror surface of the zi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/00
CPCC23C2/003C23C2/06
Inventor 王胜民张扬保赵晓军杨锦辉何明奕梁伟谭蓉
Owner KUNMING UNIV OF SCI & TECH
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