Liquid storage tank and filter cloth for liquid storage tank

Abstract

The present invention provides a liquid storage tank equipped with a filter cloth that is less likely to fall out of the header by employing a different structure than one in which a bag-shaped filter cloth is fitted into the header, and the filter cloth itself. [Solution] A liquid storage tank having a tank for storing liquid, a liquid discharge pipe, a head for fixing the discharge pipe, and a bag-shaped filter cloth positioned to cover the discharge pipe and with a closed lower end, wherein the tank has an opening for inserting the discharge pipe into the tank, and the upper end of the filter cloth is provided with a flange that surrounds the opening of the filter cloth, and the filter cloth is fixed to the tank by sandwiching the flange between the edge of the opening and the head while the discharge pipe is enclosed in the filter cloth, and a filter cloth to be used therefor.

Claims

1. A tank for storing liquid, Liquid discharge pipe, A head for fixing the aforementioned discharge pipe, A liquid storage tank having a bag-shaped filter cloth positioned to cover the discharge pipe and with its lower end closed, The tank has an opening for inserting the discharge pipe into the tank, The upper end of the filter cloth is provided with a flange that surrounds the opening of the filter cloth. A liquid storage tank in which the discharge pipe is enclosed within the filter cloth, and the flange portion is sandwiched between the edge of the opening and the head portion, thereby fixing the filter cloth to the tank.

2. The liquid storage tank according to claim 1, wherein the flange portion is made of nonwoven fabric.

3. The liquid storage tank according to claim 1, wherein the flange portion is made of nonwoven fabric, and the surface in contact with the head is a surface that has been heat-treated so that the nonwoven fabric does not fray due to heat melting.

4. The liquid storage tank according to claim 1, wherein the flange portion is made of nonwoven fabric, and the surface opposite to the surface in contact with the head is made of a surface in which the fluff of the nonwoven fabric remains.

5. The flange portion is made of nonwoven fabric, and the surface in contact with the head and the surface opposite the surface in contact with the head are heat-treated to prevent the nonwoven fabric from becoming fuzzy due to heat melting, as described in claim 1.

6. The filter cloth comprises a first cylindrical portion fixed to the flange portion and a second cylindrical portion connected to the first cylindrical portion and covering the tip of the discharge pipe. The liquid storage tank according to claim 1 or 2, wherein the first cylindrical portion is made of a fabric that is thinner than the fabric that constitutes the second cylindrical portion.

7. The filter cloth comprises a first cylindrical portion fixed to the flange portion and a second cylindrical portion connected to the first cylindrical portion and covering the tip of the discharge pipe. The liquid storage tank according to claim 1 or 2, wherein the second cylindrical portion is made of a fabric with greater breathability than the first cylindrical portion.

8. This is a filter cloth for tanks that store liquids. The filter cloth has an opening at its base end that is large enough to enclose the liquid discharge pipe, which is a component on the tank side, and its tip is a closed bag shape, with a flange portion arranged to surround the opening. The flange portion is sandwiched between the head portion, which is a member on the tank side, and the edge portion of the opening of the tank, thereby fixing the filter cloth to the tank. This is a filter cloth for a liquid storage tank.

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