CN-224212725-U - Molten metal filtering unit

CN224212725UCN 224212725 UCN224212725 UCN 224212725UCN-224212725-U

Abstract

The object is to provide a molten metal filter unit which is stably arranged in a filter chamber. The object is achieved by a molten metal filtering unit comprising a pair of side plates and a substantially cylindrical filtering tube connected substantially perpendicularly to the pair of side plates, wherein the pair of side plates comprises a first side plate having a through hole at a portion connected to the filtering tube and a second side plate having a closed portion connected to the filtering tube, each side plate comprises a leg portion hanging from a bottom surface of the side plate, and the number of the leg portions of the first side plate is at least one greater than the number of the leg portions of the second side plate.

Inventors

NAKAMOTO KENSUKE
DI YINGQI
KAWAGUCHI KAZUHIKO
Gao Gangren
MATSUNAGA SHINICHI

Assignees

三井金属株式会社

Dates

Publication Date: 20260508
Application Date: 20231130

Claims (3)

1. A molten metal filtering unit is provided with: A pair of side plates, and A substantially cylindrical filter tube connected substantially perpendicularly to each of the pair of side plates; It is characterized in that the method comprises the steps of, The pair of side plates includes: a first side plate having a through hole at a portion connected to the filter tube, and The part connected with the filter pipe is sealed; Each side plate is provided with a slave side plate a leg part is vertically arranged on the bottom surface, The number of legs of the first side plate is at least one greater than the number of legs of the second side plate, When the molten metal filtering unit is placed on the horizontal plane and viewed from above in the vertical direction, the molten metal filtering unit area represented by the product of the length of the molten metal filtering unit in the longitudinal direction of the filtering pipe and the length of the side plate in the longitudinal direction is set to S1, The total area of the ground areas of all the legs of the molten metal filtering unit is set to S2, The area ratio S2/S1 is not less than 0.0020 and not more than 0.015.
2. A molten metal filtration unit according to claim 1, wherein, The first side plate has two legs, and the second side plate has one leg.
3. A molten metal filtration unit according to claim 1, wherein, Two legs are provided near both ends in the longitudinal direction of the bottom surface of the first side plate, and one leg is provided in the substantially central portion in the longitudinal direction of the bottom surface of the second side plate.

Description

Molten metal filtering unit Technical Field The present utility model relates to a molten metal filtering unit disposed in a molten metal filtering device for filtering molten metal such as aluminum. And more particularly, to a molten metal filter unit that is easily disposed at a predetermined position of a filter chamber of a molten metal filter device when the molten metal filter unit is disposed in the filter chamber. Background Molten metal such as aluminum used for producing castings generally contains nonmetallic inclusions such as hydrogen and oxides as impurities. For example, dissolved hydrogen in molten metal may form cast holes called "blow holes" in castings, and oxides and the like may become inclusions in castings. These cast holes and inclusions are not preferable because they may become the starting points of the damage to the casting. Accordingly, a filter device for filtering molten metal to remove impurities such as inclusions contained in the molten metal has been developed. In order to achieve this object, a molten metal filtering apparatus is typically used in which a molten metal filtering unit having a plurality of ceramic filtering pipes for filtering impurities from molten metal is placed in a filtering chamber, and the filtering chamber is provided with a liquid inlet and a liquid outlet (see patent document 1). In such a molten metal filtering apparatus, when the molten metal filtering unit is disposed in the filtering chamber, the molten metal filtering unit needs to be closely attached to the liquid outlet side of the filtering chamber in order to prevent leakage of the molten metal. Therefore, the position and the height of the molten metal filter unit are adjusted as needed by using a block for height adjustment of the molten metal filter unit or the like for the hearth of the filter chamber. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2014-210254 Disclosure of utility model Problems to be solved by the utility model When the filtering chamber of the repeatedly used molten metal filtering device repeatedly filters the molten metal, the filtering chamber repeatedly expands and contracts due to the heat of the molten metal at a high temperature. In addition, the supporting portion (base portion) of the hearth that contacts the filter unit may be worn out by repeatedly disposing the filter unit. As a result, the hearth of the filter apparatus becomes no longer substantially horizontal due to aged deterioration, and thus it is difficult to stably arrange the filter unit in the filter chamber. Accordingly, an object of the present utility model is to provide a molten metal filter unit which eliminates the above-described drawbacks, that is, which is stably disposed in a filter chamber. In addition, in the entire specification, the "molten metal filtering unit" may be simply referred to as "filtering unit". In the present specification, the term "molten metal filtration device" may be simply referred to as "filtration device". Means for solving the problems The present inventors have conducted intensive studies and as a result, have found that the above problems can be solved by improving the leg portions provided on the bottom surface of the side plate constituting the filter unit, and completed the present utility model. In the above description and the present specification, the first side plate means a side plate having a through hole at a portion connected to the filter tube, and the second side plate means a side plate in which a portion connected to the filter tube is closed. One exemplary manner of such the present utility model is as follows. A molten metal filtering unit is provided with: A pair of side plates, and A substantially cylindrical filter tube connected substantially perpendicularly to each of the pair of side plates; the pair of side plates includes: a first side plate having a through hole at a portion connected to the filter tube, and The part connected with the filter pipe is sealed; Each side plate is provided with a slave side plate a leg part is vertically arranged on the bottom surface, The number of legs of the first side plate is at least one greater than the number of legs of the second side plate. ADVANTAGEOUS EFFECTS OF INVENTION According to the filter unit of the present utility model, by making the number of legs provided in the first side plate at least one more than the number of legs provided in the second side plate, stable arrangement of the filter unit can be achieved by the contact of the legs with the hearth even in the filter chamber which deteriorates over the years. Further, this filter unit can circulate heat between the legs, and therefore, can also obtain an additional excellent advantage of improving the warm-up efficiency of the filter device. Drawings Fig. 1 shows a typical example of a filter unit and a filter device. Fig. 2 shows a schematic diagram of a filter unit accor