JP2011125809A - Filtering machine directly connected with tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filtering machine directly connected with a tank, featuring that a pump and a hose are not required when a liquid contained in a tank (a liquid to be filtered) is filtered, preparations for a filtering operation and a cleaning operation after filtering are simple, the loss of a filtered product can be reduced, the installation site space can be effectively utilized, and the filter can contribute to energy saving. <P>SOLUTION: The filtering machine directly connected with a tank operates to filter a liquid to be filtered flowing from a discharge outlet installed at the bottom of a tank for accommodating the liquid to be filtered. The filtering machine is of the following construction: A filter body fitted with a filter and a lid part are fixed with each other, an inlet for the liquid to be filtered is formed at the top of the lid part, and a filtrate outlet is formed at the bottom of the filter body. Besides, the inlet for the liquid to be filtered and the filtrate outlet are arranged at positions where their respective center lines are almost the same, and the inlet for the liquid to be filtered can be directly fitted into the discharge outlet. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a filter for filtering a liquid to be filtered flowing from a discharge port provided at the bottom of a tank for storing a liquid (filtered liquid) such as a paint, an ink product, or a chemical, and is directly attached to the discharge port. The present invention relates to a tank direct-attached type filter.

Conventionally, when manufacturing liquids such as small-sized paints, ink products, chemicals, etc. that are not scheduled for continuous operation, they are reacted, mixed, etc. in a tank that contains a predetermined amount of liquid, and paints, ink products, chemicals, etc. Etc. are made. In order to remove foreign matter and the like generated in the manufacturing stage when these liquids are transported from the tank to the filling machine, a filter is installed on the way from the tank to the filling machine. Has been done to remove.
As such a filter, for example, a filter 101 as shown in the conceptual diagram of the internal structure of the filter in FIG. 4 is used (see Patent Document 1).
The filter 101 includes a main body portion 102 and a lid portion 103. The main body portion 102 and the lid portion 103 are fixed to a flange portion of the main body portion 102 and the lid portion 103 with bolts 108, nuts 109, 109 ′, and the like. It is fixed by means.

A filtrate inlet 104 is provided on the upper side of the main body 102, and a filtrate outlet 105 is provided on the bottom of the main body 102.
The filtrate inlet 104 is an inlet for allowing the filtrate to be filtrated in a tank (not shown) to flow into the main body 102, and the outlet and the filtrate inlet 104 provided at the bottom of the tank (not shown) are hose. Connected by In such a filter 101, since the flow resistance of the filtrate to be filtered is usually large, a pump (not shown) is provided between the outlet provided at the bottom of the tank and the filtrate inlet 104, and the pressure is increased by the pump. Thus, the liquid to be filtered is sent to the main body 102.
Further, the filtrate outlet 105 is an outlet for taking out a filtrate filtered by a filter described later, and this filtrate outlet 105 can be connected to a filling machine (not shown) directly or by a hose.

A filter can be attached to the inside of the main body 102 of the filter 101, and a known filter such as a cylindrical cartridge type filter or a wire mesh basket filter can be attached as a filter. .
FIG. 4 shows an example in which a cylindrical cartridge type filter 113 is used as a filter.
In FIG. 4, a pedestal 114 is provided below the inside of the main body 102, and a plurality of cylindrical cartridge type filters 113 are mounted on the pedestal 114 at equal intervals throughout the interior. In FIG. 4, two cartridge type filters 113 are shown. However, the number is not limited to two, and about 2 to 12 are generally used.

A filter retainer 117 is provided on the upper part of the cartridge type filter 113, and a spring 118 is fitted in the filter retainer 117. When the main body 102 and the lid 103 are fixed, a force is applied to the spring 118, and the cartridge type filter 113 can be fixed by the pedestal 114 and the spring 118. Therefore, the liquid filtrate inlet 104 cannot be provided in the lid 103, and usually the liquid filtrate inlet 104 is provided on the side surface of the main body 102.
Usually, in order to enhance the filtration effect, the cartridge type filter 113 is disposed in the entire interior of the main body portion 102. However, in view of the flow of the liquid to be filtered flowing into the main body portion 102, the cartridge type filter 113 has a resistance. Will work. Therefore, the filtration time is shortened by pressurizing the liquid to be filtered with the pump as described above.

  Then, the filtrate to be filtered that is pressurized by the pump and flows from the filtrate inlet 4 is accumulated in the space 119 on the pedestal 114. The collected liquid to be filtrated is filtered by permeating the inside of the filter from the side surface of the cartridge type filter 113 at any time, and the filtrate flows out from below the center of the cartridge type filter 113 to the space 120 below the pedestal 114. The filtrate can be taken out from the outlet 105.

Japanese Patent Laid-Open No. 11-90119

However, in such a conventional filter, it is necessary to pressurize the liquid to be filtered by a pump as described above, and thus a pump, a tank and a pump, and a hose for connecting the pump and the filter are necessary.
In such a filter, there is a problem that it takes time to prepare for a filtering operation and to perform a cleaning operation after the completion of the filtration, so that the liquid to be filtered remains in the pump and the hose, and the loss of the filtered product is large. That is, the conventional filter cannot be said to be an appropriate filter for filtering a small variety of products (liquid). Such a filter requires a place for installing the pump, and energy for operating the pump, which is problematic in terms of effective use of site space and efficient use of energy.
Pumps are usually obligated to be fixed on the floor, etc., and long hoses may be required to connect the tank and pump. In such cases, the hose and the pump are covered. It was not avoided that the filtrate remained, and the remaining filtrate to be filtered could not be used effectively.

  The present invention has been made in order to solve the above-described problems, and does not require a pump or a hose for filtering the liquid (liquid to be filtered) stored in the tank. It is an object of the present invention to provide a filter that simplifies the cleaning operation, reduces the loss of the filtered product, can effectively use the site space, and is also useful for energy saving.

  As a result of intensive studies to achieve the above object, the present inventors have increased the diameter of the filtered liquid inlet of the filter and connected directly to the outlet provided at the bottom of the tank. The pressure (self-weight) of the liquid (filtrate to be filtered) can be used, and if this pressure is used, the liquid to be filtered can be efficiently filtered without using a pump, and the present invention is completed. It came to do.

That is, the present invention
(1) A filter for filtering a liquid to be filtered flowing in from a discharge port provided at the bottom of a tank for storing the liquid to be filtered, and the filter is fixed to a main body of the filter and a lid. A filtrate inlet is provided at the top of the lid, a filtrate outlet is provided at the bottom of the filter body, and the center lines of the filtrate inlet and the filtrate outlet are substantially the same. A tank direct-attached filter that is arranged at the same position, and the filtrate inlet can be directly attached to the outlet;
(2) The tank direct-attached filter according to (1), wherein the diameter of the filtrate inlet is substantially the same as the diameter of the discharge port,
(3) The filter according to (1) or (2), wherein the filter is a cylindrical filter, and a ratio between an internal height and an inner diameter of a cylindrical portion of the filter is 1: 1 to 1: 5. Tank-mounted filter,
(4) The filter is a cylindrical cartridge-type filter, and a plurality of the cartridge-type filters are arranged on the base of the filter main body so that the cartridge-type filter does not exist immediately below the filtrate inlet. The tank direct attachment type filter according to any one of (1) to (3) above,
(5) The tank direct attachment type filter according to any one of (1) to (3), wherein the filter is a wire mesh basket filter,
Is to provide.

  According to the tank direct attachment type filter of the present invention, it is not necessary to use a pump or a hose to filter the liquid (liquid to be filtered) stored in the tank, and it is easy to prepare for the filtering operation and to perform the cleaning operation after the completion of the filtering. As a result, the filter product has less loss, and the site space can be used effectively, and the filter is useful for energy saving.

It is the side view and top view which show the structure of one embodiment of the tank direct attachment type filter of this invention. It is the side part conceptual diagram and bottom part conceptual diagram of the internal structure of one embodiment of the tank direct attachment type filter of FIG. It is a side part conceptual diagram of the internal structure of the other embodiment of the tank direct attachment type filter of FIG. It is a side part conceptual diagram of the internal structure of the conventional filter.

Hereinafter, the form for implementing the tank direct attachment type filter of this invention is demonstrated with reference to FIGS. 1-3.
This form is specifically described in order to make the gist of the invention better understood, and does not limit the present invention.

FIG. 1: is the side view (a) and top view (b) which show the structure of one embodiment of the tank direct attachment type filter of this invention.
The filter 1 according to the present invention includes a main body 2 and a lid 3, and the main body 2 and the lid 3 are bolts 8 in bolt holes 12 provided in the main body flange 6 and the lid flange 7. Is fixed by a nut 9.
In this embodiment, flanges, bolts, and nuts are used as means for fixing the main body 2 and the lid 3. However, the present invention is not limited thereto, and any method that can fix the main body 2 and the lid 3 is used. For example, there is no particular limitation.

  A filtered liquid inlet 4 is provided at the top of the lid 3, and the filtered liquid inlet 4 is an inlet for allowing the filtered liquid in a tank (not shown) to flow into the main body 2 and is not shown. It can be directly attached to a discharge port provided at the bottom of the tank. Further, a filtrate outlet 5 is provided at the bottom of the main body 2, and this filtrate outlet 5 is an outlet for taking out the filtrate filtered by a filter described later, and this filtrate outlet 5 is not shown. It can be connected to the machine directly or via a hose.

And the to-be-filtrated inlet 4 and the filtrate outlet 5 are arrange | positioned in series in the position where each center line becomes substantially the same, ie, the to-be-filtrated inlet 4 and the filtrate outlet 5 in series. Thereby, the pressure loss at the time of filtration (resistance of the flow of a liquid) can be made small, and the main body part 2 to-be-filtered liquid can be pressurized with the pressure (self-weight) of the liquid (to-be-filtered liquid) in a tank.
Moreover, since the diameter of the to-be-filtrated liquid inlet 4 is directly attached to the discharge port provided in the bottom part of the tank, it is preferable to make it a diameter substantially equal to the discharge port provided in the bottom part of the tank. Thereby, the pressure loss (resistance of liquid flow) at the time of filtration can be further reduced, and the pressure (self-weight) of the liquid in the tank (liquid to be filtered) can be used more effectively.
Therefore, if the filter 1 of this invention is used, it will become possible to filter a to-be-filtered liquid efficiently, without using the pump which pressurizes a to-be-filtered liquid. Further, for the purpose of further shortening the filtration time, pressure may be applied to the tank with nitrogen gas or the like.

The filtrate outlet 5 is an outlet for allowing the filtrate to flow out, and here, since it is not affected by the pressure loss of the liquid, its diameter is not particularly limited, and is appropriately determined according to the diameter of the filling machine, the diameter of the hose, etc. can do.
The shape of the main body 2 is not particularly limited, but is preferably a cylindrical shape. The internal height and the inner diameter of the cylindrical portion of the cylindrical main body 2 are not particularly limited, but the ratio is preferably 1: 1 to 1: 5, more preferably 1: 1 to 1: 3. This is because the pressurizing area can be increased by increasing the inner diameter with respect to the internal height, and the pressure (self-weight) of the liquid (filtrate) in the tank can be used efficiently. It is.
A flange holding member 10 for holding the flange 7 is provided on the side surface of the main body 2, and a lid reinforcing member 11 is provided on the upper surface of the lid 3.

FIG. 2 is a side conceptual view (a) and a bottom conceptual view (b) of the internal structure of one embodiment of the tank direct-attached filter of FIG.
A cylindrical space is formed inside the main body 2, and a detachable pedestal 14 is fixed by a pedestal support 15 and a packing 16 below the space. A plurality of cylindrical cartridge type filters 13 can be mounted at predetermined locations on the base 14.
In FIG. 2, as shown in FIG. 2B, six cartridge type filters 13 are arranged in the center portion of the base 14 so that the cartridge type filter 13 does not exist. By disposing the cartridge type filter 13 in this way, the cartridge type filter 13 is not present directly under the filtrate inlet 4. As a result, even if the liquid to be filtered flows into the main body 2, the cartridge type filter 13 does not exist immediately below the inlet 4 for the second liquid to be filtered, so that the pressure loss of the liquid to be filtered can be reduced. .

Further, a filter holding member 17 is provided on the upper part of the cartridge type filter 13.
The lid 3 is provided with a spring 18 so as to correspond to the position where the cartridge type filter 13 is present. The spring 18 applies a force to the filter holding member 17 so that the cartridge type filter 13 is removed from the base 14. Prevents disconnection.
The cartridge type filter 13 is not particularly limited, and is not limited to the cylindrical cartridge type filter 13 and can be appropriately selected according to the type, viscosity, and the like of the liquid to be filtered.
Then, the liquid to be filtered flowing from the liquid inlet 4 is collected in the space 19 on the pedestal 14. The collected liquid to be filtrated is filtered by permeating the inside of the filter from the side of the cartridge type filter 13 as needed, and the filtrate flows out from below the center of the cartridge type filter 13 into the space 20 below the pedestal 14. The filtrate can be taken out from the outlet 5, thereby completing the filtration.

FIG. 3 is a conceptual side view of the internal structure of another embodiment of the tank direct-attached filter of FIG.
In this embodiment, a wire mesh basket filter 21 is used as a filter. In this case, unlike the case where the cartridge type filter 13 is used, the detachable pedestal 14 and packing 16 are detached, and the wire mesh basket filter 21 is directly supported by the pedestal support 15. Then, the filtrate filtered by the wire mesh basket filter 21 flows out into the space 20, and the filtrate can be taken out from the filtrate outlet 5. Of course, not only the method of directly supporting the wire mesh basket filter 21 by the pedestal support 15, but also the method of arranging the wire mesh basket filter 21 on the pedestal 14 using the packing 16 and the pedestal 14 in which a plurality of holes are formed. It may be adopted.
The metal mesh basket filter 21 has fine pores formed by a metal mesh, and by appropriately selecting the size of the pores, the type of the liquid to be filtered, the viscosity, and the size of foreign matter to be removed. Can be selected as appropriate. The size of the wire mesh basket filter 21 itself is not particularly limited, but it is preferable that the filtrate flows out from the bottom surface and side surface of the wire mesh basket filter 21, so that the wire mesh basket filter 21 has a diameter and height slightly smaller than the inner diameter and height of the main body 2. It is preferable to select one.

Thus, in the tank direct attachment type filter of the present invention, the type of filter to be used is not limited, so that the filter can be used properly according to the type of liquid to be filtered by one filter, the viscosity, etc. There is also.
The cartridge type filter is preferably used when the liquid to be filtered has a low viscosity property of about 0.5 Pa · s or less, and the wire mesh basket filter has a low viscosity of about 0.5 Pa · s or less. And medium viscosity properties of about 0.5 Pa · s to 1.8 Pa · s.

Next, the usage method of the tank direct attachment type filter of this invention is demonstrated.
In the tank direct attachment type filter of the present invention, a cylindrical cartridge type filter, a wire mesh basket filter, or the like can be used as the filter. The case where it is used will be described as an example.

First, a cylindrical cartridge type filter 13 is installed in the main body 2 of the filter 1, the lid 3 is placed on the upper part of the main body 2, and the main body 2 and the lid are secured by fixing means such as bolts 8 and nuts 9. 3 is fixed.
Next, the filtrate inlet 4 provided at the top of the lid 3 and the outlet (not shown) provided at the bottom of the tank can be connected by, for example, a one-touch joint, and the filtrate inlet The filter 1 is directly attached to the tank by connecting 4 to a discharge port provided at the bottom of the tank.
As described above, the tank direct-attached filter of the present invention does not require the use of a pump, so that the filter 1 can be installed in a short time. Further, a filling machine (not shown) is connected to the filtrate outlet 5 directly or by a hose.

  Next, when the filter 1 is installed, the discharge port provided at the bottom of the tank is opened, and the liquid to be filtered contained in the tank flows into the space 19 on the base 14 of the main body of the filter 1. Let Then, the liquid to be filtered accumulated in the space 19 is filtered by permeating the inside of the filter from the side surface of the cartridge type filter 13 as needed, and the filtrate is passed from the lower part of the center of the cartridge type filter 13 to the space 20 below the pedestal 14. Flows out and the filtrate is taken out from the filtrate outlet 5. This ends the filtration.

In the tank direct-attached type filter of the present invention, it is not necessary to use a hose for connecting the pump and the discharge port provided at the bottom of the tank and the filtered liquid inlet 4. Subsequent cleaning operations are simplified. Moreover, the loss of the to-be-filtered liquid which remains in these which was not able to be avoided with the conventional filter can be eliminated, and the loss of the to-be-filtered liquid can be reduced as a whole. Furthermore, site space can be used effectively, energy can be saved, and CO ₂ can be reduced.
Furthermore, after filtering the liquid to be filtered in the tank, the filter 1 is washed as necessary. However, in this washing, only the filter 1 is substantially washed, and the washing time is longer than that of the conventional filter. Can be shortened.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to this Example.
Example As a filter, a filter 1 as shown in FIGS. 1 and 2 was used. The internal height of the cylindrical portion of the main body 2 of the filter 1 was 0.21 m, the internal diameter was 0.28 m, and the ratio between the internal height and the internal diameter was 1: 1.3. Moreover, the aperture of the filtrate inlet 4 was 8.1 cm, and the aperture of the filtrate outlet 5 was 8.1 cm.

As shown in FIG. 2B, the cartridge type filter 13 does not exist in the central portion of the pedestal 14 so that the cartridge type filter 13 does not exist immediately below the liquid inlet 4 to be filtered. In this manner, six cartridge type filters 13 were arranged.
An outlet (not shown) having a diameter of 8.1 cm provided at the bottom of a tank containing 2000 liters of an aqueous paint having a viscosity of 50 Pa · s, and an inlet 4 to be filtered of the filter 1 Were directly connected by a one-touch joint, and the filter 1 was directly attached to the tank.
Further, a filling machine (not shown) was directly connected to the filtrate outlet 5 in order to fill the filtrate.

As a result, when it filtered using the filter 1 of an Example, the time from the preparation of a filtration operation to after completion | finish of filtration was shortened from the conventional filter.
Moreover, in the Example, it was a grade which the water-based paint adhering in the filter 1 produced as a loss, and the loss of the water-based paint was able to be reduced significantly.
Furthermore, since the cleaning after the filtration only needs to clean the inside of the filter 1, the cleaning time can be shortened, and the amount of cleaning water, drainage, etc. can be greatly reduced.

  According to the tank direct attachment type filter of the present invention, since a pump and a hose are not required, filtration products such as paints, ink products, chemicals, etc. except high viscosity products stored in the tank can be filtered with little loss. . And the preparation of the filtration work and the washing work after the filtration are simple, the site space can be used effectively, and it can be preferably used as a filter useful for energy saving.

DESCRIPTION OF SYMBOLS 1 Filtration machine 2 Main-body part 3 Cover part 4 Filtrate inlet 5 Filtrate outlet 13 Cartridge type filter 21 Wire net basket filter

Claims (5)

  A filter for filtering a liquid to be filtered flowing from a discharge port provided at the bottom of a tank for storing the liquid to be filtered, the filter having a filter body with a filter attached to a lid. The top of the lid is provided with a filtrate inlet, the bottom of the filter body is provided with a filtrate outlet, and the center line of the filtrate inlet and the filtrate outlet are substantially the same. The tank direct attachment type filter which is arrange | positioned in the position and the said to-be-filtered liquid inlet can be directly attached to the said discharge port.   The tank direct-attached filter according to claim 1, wherein a diameter of the liquid inlet is approximately equal to a diameter of the discharge port.   3. The tank directly attached according to claim 1, wherein the filter is a cylindrical filter, and the ratio of the internal height and the inner diameter of the cylindrical portion of the filter is 1: 1 to 1: 5. Type filter.   2. The filter is a cylindrical cartridge type filter, and a plurality of the cartridge type filters are arranged on a base of a filter main body so that the cartridge type filter does not exist immediately below the inlet of the liquid to be filtered. The tank direct attachment type filter according to any one of?   The tank direct attachment type filter according to any one of claims 1 to 3, wherein the filter is a wire mesh basket filter.

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