JPH09155114A - Filter for fluid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the opening of a filter freely corresponding to fluid to be filtered by a method in which doughnut-shaped upper and lower flanges which face each other at a distance nearly equal to the length of an inner cylinder are engaged on the periphery of the inner cylinder, and numbers of thin lines are stretched between the upper and lower flanges to form a filter surface which is cylindrical as a whole. SOLUTION: A filter main body 6 is formed to be cylindrical as a whole by a method in which thin lines, for example numbers of thin stainless wires 9, are stretched concentrically to form parallel rows between doughnut-shaped upper and lower flanges 7, 8 which are engaged on the periphery of an inner cylinder 2 and located to face each other at a distance nearly equal to the length of the inner cylinder 2, and the whole peripheral surface of the main body 6 which is closely contacted in this way by the wires 9 is made a filter surface 13. When the upper flange 7 is turned, the filter surface 13 of the cylinder is twisted in the circumferential direction like a squeezed mop by the numbers of wires 9, the gap between the wires 9 is made narrower, and the opening of the filter surface 13 can be adjusted by the rotational angle of the upper flange 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can easily adjust the size of the filter mesh of a filter medium according to the fluid to be treated.
The present invention relates to a filter for fluid filtration, which is easy to wash the filter medium and does not require filter replacement.

[0002]

2. Description of the Related Art A filter is a device for effectively separating solid phase particles suspended in a fluid by providing a pressure difference on both sides of a partition wall through which a fluid (gas, liquid) containing a different phase passes. Conventionally, various filters have been put to practical use and proposed in many fields.

However, since the fluid to be treated is specified in all conventional filters, the size of the filter mesh of the filter medium is also fixed, and the size of the filter mesh cannot be freely adjusted, and the filter medium cannot be adjusted. When clogging occurs, it is common to use a high-pressure pump to backwash or replace the filter as a cartridge type.

[0004]

SUMMARY OF THE INVENTION According to the present invention, the size of the filter mesh can be freely adjusted according to the fluid to be treated, and even if the filter medium is clogged, it can be easily backwashed, and a high-pressure pump is provided. It proposes a filter for fluid filtration that does not need to be backwashed due to such reasons.

[0005]

That is, according to the present invention, an inner cylinder having a large number of through holes in its peripheral wall is fixed in the central portion of the body to divide the body into inner and outer halves, and the body is fluidized. An inlet and a fluid outlet that communicates with the outside are provided at the bottom of the inner cylinder, and donut-shaped upper and lower flanges are fitted on the outer periphery of the inner cylinder and face each other at intervals substantially equal to the length of the inner cylinder. Then, a large number of thin wires are stretched between the upper and lower flanges to form a cylindrical filtering surface, and the lower flange is fixed to the lower part of the inner cylinder, while the upper flange is rotatable in its circumferential direction. The present invention relates to a filter for fluid filtration.

A gear is formed on the outer periphery of the above-mentioned upper flange, and the gear meshes with a small gear that is axially supported on the lower side of the upper plate of the body and is installed on the upper plate of the body. It may be configured to be rotated by a handle for driving a small gear, and the thin wire forming the cylindrical filtering surface may be:
A tough wire such as a metal wire such as a stainless wire or a synthetic fiber thread such as a nylon thread can be used.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing an example of a filter for fluid filtration according to the present invention. Reference numeral 1 is a cylindrical container body made of stainless steel or plastic, the upper surface of which is closed. A cylindrical inner cylinder 2 having an upper surface closed so as to be parallel to the body 1 is fixed to a central portion of the body 1, whereby the interior of the body 1 is divided into an inner and outer double. A large number of slits (through holes) 3 are evenly provided in the circumferential wall of the container 2 in the lengthwise direction, and the fluid (liquid or gas) flowing in from a fluid inlet 4 provided in a part of the container 1 is provided. Is slit 3
It enters into the inner cylinder 2 through and is discharged to the outside from a discharge port 5 provided at the bottom of the inner cylinder 2 so as to penetrate the bottom of the body 1.

Reference numeral 6 denotes a filter body mounted on the outer side of the inner cylinder 2, and the filter body 6 is fitted to the outer periphery of the inner cylinder 2 and faces each other with a space substantially equal to the length of the inner cylinder 2 facing each other. As a thin wire, a large number of thin stainless wires 9 having a diameter of, for example, 10 to 30 μm are concentrically stretched in parallel between a plurality of rows (four rows in the figure) to form a cylindrical shape as a whole between the upper and lower flanges 7 and 8 of the mold. As described above, the entire peripheral surface of the filter body 6 that is densely packed with the wires 9 serves as the filtering surface 13.

A gear 10 is formed on the upper peripheral edge of the upper flange 7 of the filter body 6 and meshes with a small gear 11 which is axially supported on the lower side of the upper plate of the body 1 to upper side of the upper plate of the body 1. By rotating the pinion gear 11 with the pinion gear driving handle 12 installed at the position, the upper flange 7 of the filter body 6 is laterally driven to rotate.

On the other hand, the lower flange 8 of the filter main body 6 is fixed to the outer periphery of the lower end portion of the inner cylinder 2, and when the upper flange 7 is rotated by the operation of the handle 12 as described above, a cylindrical body is formed by a large number of wires 9. Filtration surface 1 forming a
3 is twisted in the circumferential direction like a "squeezing cloth", and the gap between the parallel wires 9 is further reduced, so that the size of the filtration mesh of the filtration surface 13 can be adjusted by the rotation angle of the upper flange 7. It has become.

The small gear 11 or the upper flange 7 may be provided with a ratchet mechanism and a mechanism for releasing the ratchet mechanism so that the ratchet mechanism can be stopped at any rotation angle. Further, as the wire material constituting the filtering surface 13, in addition to the rope such as the above-mentioned thin stainless wire, synthetic fiber thread such as nylon thread, cotton thread, silk thread and the like can be used.

When filtering suspended water such as bath water, however, the handle 12 is rotated as described above, and the cylindrical filtering surface 1 constituted by the wire 9 of the filter body 6 is used.
3 is twisted in the circumferential direction to adjust the size of the filter mesh (that is, the interval between the wire rods 9), and the inlet 4 is inserted into the body 1.
If it is made to flow in from, it will be filtered by the filtration surface 13 and will be discharged to the outside as clean water from the lower discharge port 5 of the inner cylinder 2 through the slit (through hole) 3 (see FIG. 2).

When the filter surface 13 is clogged, as shown in FIG. 3, the handle 12 is rotated in the reverse direction to untwist the filter surface 13 to widen the filter mesh, and then the discharge port 5 is opened. If the water flows through the inner cylinder 2 so that the water flows backward, the dirt adhering to the outside of the filtration surface 13 can be discharged together with the fresh water from the inlet 4 of the body 1, and the filter body 6 can be replaced. Also, there is no need to use a high-pressure pump or the like for back washing.

The filter of the present invention is not very suitable for producing purified water such as drinking water. However, in addition to purification for circulating use of bath water as described above, it can be used as an intermediate for industrial water. It can be used for liquid filtration of water and the like, and gas filtration such as purification of oil smoke generated from homes and kitchens.

[0015]

EFFECTS OF THE INVENTION The filter for fluid filtration of the present invention is as described above, and (a) filtration of a filter medium formed into a cylindrical shape by a thin wire such as a stainless wire that is stretched in parallel between the upper and lower flanges and is densely packed. By twisting the surface in the direction of its circumference like a "squeezing cloth" by an arbitrary rotation angle,
The size of the filtration mesh can be freely adjusted according to the fluid to be treated. (B) When the filtration surface is clogged, the twist of the filtration surface is released to expand the filtration mesh, By changing the direction of the circulating water channel, it is possible to easily backwash, and there is no need to use a high-pressure pump for backwashing. (C) Also, the cylindrical filtration surface can be changed according to the fluid to be treated. By selecting the type of thin line to configure,
It can be used for various fluid filtration. (D) Moreover, if a strong wire such as stainless wire or nylon thread is used for the thin wire as the filter material, it can be used permanently by repeating back washing as described above. It is possible to save the labor and cost of replacing the filter cartridge as in the conventional case, and the like.

[Brief description of the drawings]

FIG. 1 is a side view illustrating an example of a fluid filtering filter according to the present invention.

FIG. 2 is an explanatory view showing the action of the filter body, showing a state in which the cylindrical filtration surface is twisted to filter the fluid.

FIG. 3 is an explanatory view showing the operation of the filter body, showing a state in which the cylindrical filtration surface is untwisted to clean the filtration surface.

[Explanation of symbols]

 1-Body 2-Inner Cylinder 3-Slit (Through Hole) 4-Inlet 5-Outlet 6-Filter Main Body 7-Upper Flange 8-Lower Flange 9-Stainless Steel Wire (Thin Wire) 10-Gear 11-Small Gear 12 -Handle 13-Cylindrical filtration surface

Claims (3)

[Claims] 1. An inner cylinder having a large number of through holes formed in its peripheral wall in the center of the body is fixed to divide the inner body into inner and outer halves, and the body has a fluid inlet and a bottom of the inner cylinder. Fluid outlets communicating with the outside are provided respectively, and donut type upper and lower flanges facing each other are fitted to the outer periphery of the inner cylinder at intervals substantially equal to the length of the inner cylinder, and a large number of them are provided between the upper and lower flanges. A fluid characterized in that a thin cylindrical wire is stretched to form a generally cylindrical filtration surface, and the lower flange is fixed to the lower part of the inner cylinder, while the upper flange is rotatable in its circumferential direction. Filter for filtration. 2. A gear is formed on the outer periphery of the upper flange, and the gear meshes with a small gear that is axially supported on the lower side of the upper plate of the body, and the small gear installed on the upper plate of the body. A laterally-oriented structure that is rotationally driven by a handle for driving a gear.
The described filter for fluid filtration. 3. The thin wire forming the cylindrical filtering surface comprises:
The filter for fluid filtration according to claim 2 or 3, which is a metal wire such as a stainless wire or a synthetic fiber thread such as a nylon thread.