JP2001300213A - Movable liquid filter element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable liquid filter element, wherein a metal wire is wound in a coil form, easily holding the accuracy of the gaps of a wire material constituting a coil and capable of expanding the gaps at the time of backword washing work. SOLUTION: The wire material having notches provided in the outer peripheral surface thereof is wound in the coil form in a close contact state to form the cylindrical coil having gaps like fine holes formed in the outer periphery thereof. The upper and lower ends of the coil are respectively fixed to upper attaching metal fittings (5) and lower attaching metal fittings (6) and only the lower attaching metal fittings (6) among both metal fittings are fixed to a central movable shaft (2). The lower attaching metal fittings (6) are drawn up toward the upper attaching metal fittings (5) by a drawing-up spring 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the fabrication of a wire filter element in a liquid filter tank and the fabrication of a coiled filter element. In addition, it relates to the production method and work. It also relates to the fields in which it is applied.

[0002]

2. Description of the Related Art Conventionally, the following are known as coil spring type filter elements. A filter in which a hollow tube with a hole through which liquid flows in is used as a core metal, and a wire is tightly attached to the hollow tube in a coil shape on the outer periphery, and the wires are wound so as to keep a small interval between the wires. A filter aid is precoated on the outer periphery of the coil by the element, a liquid to be filtered is passed from the outer surface of the coil, and the filtrate is allowed to flow into the aid layer, the gap between the coils, and the hole of the hollow tube. In the coil of this device, the interval between the wires must be maintained in a minute state in micron units, but it is actually difficult to make the wires to a constant value with a minute gap, and the machining process But the cost is large. Also, since the core metal and the coil are completely fixed, during backwashing,
That effect could not be shown very much. This back washing operation is to wash by blowing out compressed air or compressed water in the direction opposite to the direction of filtration. Therefore, there has been a problem that it is necessary to frequently disassemble the liquid filter, clean and replace the element in order to remove the substance adhering between the cored bar and the coil-shaped element.

SUMMARY OF THE INVENTION The present invention provides a filter element in which a single wire serving as a passage for a filtrate is wound in close contact with each other so as to maintain a fixed interval, is inexpensive, and is easy to handle and maintain. It is intended to provide.

[0003]

In order to achieve the above-mentioned object, the present invention uses a wire which has been subjected to fine notching, and creates a gap between elements by bringing the wires into close contact with each other.

That is, the structure of the present invention is as follows: 1) A wire having a circular or square cross section having a fine cut on the outer surface is wound into a coil shape, and the cut of the wire is interposed between adjacent wires. A coil-shaped filter element having a gap like a fine hole is manufactured. As a result, the machining step is largely omitted.

[0005] 2) Also, a liquid filtration filter element using the same is manufactured, and a movable liquid filtration filter element characterized by itself moving and extending is manufactured. By extending and performing this during the backwashing operation, the cleaning effect is greatly improved.

[0006] There are two items as described above. Also, when specifically described with reference to the drawings, as shown in FIG. 4, a part of the side surface of the wire is shown, and as shown in a sectional view of FIG. 5, the wire has a fine cut around the outer surface. . This wire is wound into a coil as shown in a plan view and a side view in FIG. In the adjacent wheel of the coil, there is formed a gap in a state w in which a fine hole is made by cutting the h shown in FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG.
The filter element (1) is attached to 6), the central movable shaft (2) passes through the upper mounting bracket (5), and is fixed to the lower mounting bracket (6) with a nut. Further, a guide (3) is disposed in the coil so that the coil becomes cylindrical and stable. Further, a pull-up spring (4) of the upper bracket pulls up the coil, closely contacts and fixes the coil. The above is the movable liquid filtration filter element of the present invention.

[0006] As shown in Fig. 1, this liquid filtration filter element is attached to a tube sheet (8) to form a liquid filtration device. The liquid to be filtered passes as shown by the arrow in FIG. The liquid passes from the outside through the filter aid layer (7) attached to the filter element and enters the inside of the element from the gap of the wire cut. The inflowing filtrate passes through the inside of the upper fitting and flows out through the opening.

FIG. 6 is an expanded view of the movable filter element, illustrating the operation during the backwashing operation. When the filter element is clogged, the filter element is extended and compressed air or compressed water is jetted as indicated by an arrow. This removes impurities that cause clogging.

[0008]

The present invention has the following effects by being made of a solid, spring-like, and movable type which is in close contact with the coil spring described above.

Since the filter element (1) used in the present invention is wound tightly with the processed wire, it can be manufactured more easily and inexpensively than conventional products.

Further, according to the present invention, the trouble of disassembling and cleaning during the backwashing operation is omitted, the effect of removing impurities is improved, and the filter cleaning / replacement operation due to clogging is reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a filtration device using a filter element according to the present invention, illustrating the filtration operation.

FIG. 2 is an AA plan view of the present invention.

FIG. 3 is a plan view and a side view of a part of the coil.

FIG. 4 is an explanatory view of a shape of a wire forming a coil.

FIG. 5 is a BB cross-sectional view of the wire rod.

FIG. 6 is a cross-sectional view of the filtration device using the filter element of the present invention, illustrating the backwashing operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter element 2 Movable shaft 3 Guide 4 Pulling spring 5 Upper mounting bracket 6 Lower mounting bracket 7 Filtration aid 8 Tube plate h Cut w Adjacent wheel gap

Claims (3)

[Claims] 1. A wire having a circular or square cross section having fine cuts on its outer surface. 2. The wire according to claim 1, which is wound in a coil shape.
A coil-shaped filter element having a gap in a state where a fine hole is made by interposing a cut of a wire between adjacent rings. 3. The filter element according to claim 2, wherein a filter aid is attached to the formed gap, and the liquid filter element itself, which is a completed product thereof, moves and expands. Movable liquid filtration filter element.