Open type filter screen of continuous casting secondary cooling water zero section

Abstract

The invention relates to an open type filter screen of a continuous casting secondary cooling water zero section, and belongs to the technical field of continuous casting secondary cooling water zerosection filtering equipment in the metallurgical industry. According to the technical scheme, one end of a secondary cooling water zero section cooling pipeline (5) is connected with a water inlet pipe (6), the other end of the secondary cooling water zero section cooling pipeline (5) is provided with an end cover (7), and the secondary cooling water zero section cooling pipeline (5) is provided with multiple water outlet pipes (8) connected with water spray nozzles; a filter screen framework (1) is fixed in the zero section cooling pipeline (5); and a filter residue basket (3) and a leakage-proof fence (4) are fixed on the filter screen framework (1), one end of a water inlet filter screen pipe (2) is connected to the water inlet pipe (6) of the secondary cooling water zero section cooling pipeline (5), and the other end of the water inlet filter screen pipe (2) is connected with a connecting pipe (31) on the filter residue basket (3). The open type filter screen has the beneficial effects that supplied water filtration of the secondary cooling water zero section can be realized only by the water supply pressure, normal operation time of the secondary cooling water zero section isprolonged, and the workload of maintenance is reduced.

Description

technical field [0001] The invention relates to an open filter net for the zero-section of continuous casting secondary cooling water, belonging to the technical field of continuous casting secondary cooling water zero-section filtering equipment in the metallurgical industry. Background technique [0002] In the continuous casting production process of the metallurgical industry, it is necessary to use a large amount of cooling water for secondary cooling of the slab. This water used for secondary cooling of the slab is called secondary cooling water. The secondary cooling water is a kind of turbid ring water in continuous casting, and the water quality is poor. This is because the secondary cooling water is directly sprayed on the casting slab, and then recycled by equipment such as the slag ditch swirling pool. In the process, there will inevitably be mud and rust. Solid impurities such as skin and iron slag enter the system and move with the water flow. If these solid im...

AI Technical Summary

Problems solved by technology

The secondary cooling water is a kind of turbid ring water in continuous casting, and the water quality is poor. This is because the secondary cooling water is directly sprayed on the casting slab, and then recycled by equipment such as the slag ditch swirling pool. In the process, there will inevitably be mud and rust. Solid impurities such as skin and iron slag enter the system and move with the water flow. If these solid impurities are not treated, there will be frequent equipment blockages and other situations that affect normal production.

[0005] Based on the above reasons, most of the enterprises in the industry adopt two methods to solve the problem. One is that the continuous casting crystallizer and the secondary cooling water zero section adopt the method of regular off-line maintenance and replacement to ensure production and prevent secondary cooling water zero. Nozzle blockage, but this method will restrict the production rhythm; the second is to use the method of cleaning and replacing the zero-stage nozzle of the secondary cooling water between pouring times, which can relieve the zero-stage nozzle of the secondary cooling water to a certain extent. Blockage problem, but the nozzle needs to be cleaned every time (more than ten hours), and each time the nozzle is cleaned, workers need to work for about 1 hour under the high-temperature and humid crystallizer. For an 8-stream crystallizer, at least 4 workers are required Working at the same time greatly increases the labor intensity of workers

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