JPH0585404U - Liquid removal device for filter - Google Patents

Abstract

(57) [Abstract] [Purpose] Effective in a filtration machine that has a filter outlet for filtering the liquid in the filter tank with a filter and discharging it, and an outlet for taking out the liquid in the filter tank. It is an object of the present invention to provide a device for removing liquid. [Composition] A filter having a filtration outlet for filtering and discharging the liquid in a filtration tank with a filter material, and a take-out port for taking out the liquid in the filtration tank, wherein the take-out port has the above-mentioned filter. It is constructed by attaching a take-out filter material having substantially the same filtering performance as the filter material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid removing device for a filter, and more particularly, a filter having a filter outlet for filtering the liquid in a filter tank by a filter material and discharging the liquid, and a filter for taking out the liquid in the filter tank. Of the liquid removing device.

[0002]

[Prior Art]

 As shown in FIG. 3, the conventional filter has a filter discharge port 104 for filtering the liquid R in the filter tank 101 by the filter medium 102 and discharging the liquid R, and a normally closed filter for taking out the liquid in the filter tank 10. It had an outlet 106. In this filter, when the liquid in the filtration tank 101 is drained to replace the filter material 102, the outlet 106 is opened and the liquid is taken out by its own weight.

[0003]

[Problems to be solved by the device]

 In the above-described conventional filter, a part of the solid impurities captured by the filter material is mixed with the liquid and taken out, and the taken-out liquid needs to be filtered and discarded. In addition, when the solution is a chemical solution such as a plating solution, when disposing of it, special treatment was required to ensure safety. These operations are not only labor-intensive, but may be dangerous depending on the type of liquid.

The present invention has been made in view of such a problem related to the liquid removal of a conventional filter. When the liquid in the filtration tank is drained, a part of the solid impurities captured by the filter medium becomes the liquid. It is an object of the present invention to provide a liquid removing device of a filter which can be used as a filtered liquid as it is without being mixed and taken out.

[0005]

[Device configuration]

 The present invention is a filter having a filter outlet for filtering and discharging the liquid in a filter tank by a filter medium, and an outlet for taking out the liquid in the filter tank, wherein the outlet is substantially the same as the filter medium. It is a liquid removing device of a filtering machine, which is characterized in that a take-out filter material having a filtering performance is attached.

[0006]

【Example】

 Hereinafter, a filter according to an embodiment of the present invention will be described with reference to the drawings. The filtering machine of the first embodiment includes a liquid supply port 8 for supplying the liquid R, a filtration discharge port 4 for filtering and discharging the liquid R, and a pressurized air to a filtration tank 1 containing the liquid R. A pressurizing port 7 for supplying liquid and a take-out port 6 for taking out the liquid R are provided. A normally closed valve 12 is attached to the take-out pipe 10 connected to the take-out port 6, and a normally-closed valve 14 is attached to the pressurizing pipe 13 connected to the pressurizing port 7.

A filter medium 20 is attached to the filtration outlet 4. A take-out filter medium 24 is attached to the take-out port 6. The filter medium 20 is formed by winding a filter material such as a string, felt, and sponge cloth around the outer surface of the perforated core tube 22. The filter medium 20 thus formed has a deep filter structure having a large filter medium area. Therefore, in the filter medium 20, when the amount of filtration increases, the solid impurities mixed in the liquid R accumulate inside the filter medium 20 and gradually increase the resistance when the liquid R passes through the filter medium 20 and finally. Does not allow the liquid R to pass through at all. The take-out filter medium 24 has the same structure as the filter medium 20.

The operation of the filter having the above structure is as follows. In a normal filtration operation, the valve 12 of the take-out pipe 10 is closed and the valve 14 of the pressurizing pipe 13 is also closed. Then, the liquid R is supplied to the filtration tank 1 from the liquid supply port 8, and the liquid R is filtered by the filter medium 20 and discharged from the filtration discharge port 4. On the other hand, when the impure solid matter mixed in the liquid R accumulates in the filter medium 20 and the liquid R cannot pass through the filter medium 20 or the like, and the filter medium 20 needs to be replaced, it is connected to the liquid supply port 8. The valve (not shown) is closed and the valve 12 is opened. Further, the valve 14 is opened to pressurize the inside of the filtration tank 1. As a result, the liquid R is filtered by the take-out filter medium 24 and taken out from the take-out port 6. Here, when the liquid R is taken out from the take-out port 6, the impure solid matter trapped in the filter medium 20 may be mixed into the liquid R again, but the amount thereof is small and the filtering performance of the take-out filter medium 24 is small. Can be small.

The filter of the second embodiment is of a pressure filtration type as shown in FIG. 2, and the first embodiment has the same structure as the first embodiment among the structures of the second embodiment. The same reference numerals are given and their explanations are omitted. The outlet 6 is communicated with the suction side of the pump 32 via the first valve 30, and a liquid supply source of the liquid R is provided between the suction side of the first valve 30 and the pump 32 via the second valve 34. 36 are in communication. The discharge side of the pump 32 is communicated with the filtrate container 40 via the third valve 38, and is further communicated with the liquid supply port 8 via the fourth valve 42. The filtration discharge port 4 communicates with the filtrate container 40 via the fifth valve.

In the filter having the above-described structure, in normal filtering operation, the second valve 34, the fourth valve 42, and the fifth valve 44 are opened, the first valve 30, the third valve 38 are closed, and the pump 32 is closed. Drive it. The liquid R of the liquid supply source 36 is supplied to the filtration tank 1 via the pump 32, and the filtrate is sent from the filtration outlet 4 to the filtrate container 40. On the other hand, when the impure solid matter mixed in the liquid R accumulates in the filter medium 20 and the liquid R cannot pass through the filter medium 20 and the filter medium 20 needs to be replaced, the second valve 34, The fourth valve 42 and the fifth valve 44 are closed, the first valve 30 and the third valve 38 are opened, and the pump 32 is driven. The filtrate that has passed through the take-out filter medium 24 is sent to the filtrate container 40 via the pump 32.

[0011]

[Effect of the device]

 The liquid removing device for a filter according to the present invention is a filter having a filtering outlet for filtering the liquid in a filtering tank with a filter material and discharging the liquid, and a discharging outlet for taking out the liquid in the filtering tank. Since it is characterized by installing a take-out filter medium having substantially the same filtering performance as the above-mentioned filter medium, when extracting the liquid in the filtration tank, some of the solid impurities captured by the filter medium are mixed in the liquid. It has the advantage that it can be used as it is as a filtrate without being taken out.

[Brief description of drawings]

FIG. 1 is a sectional view of a liquid extracting device of a filter according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a liquid removing device of a filter according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of a liquid extraction device of a conventional filter.

[Explanation of symbols]

 R liquid 1 Filtration tank 4 Filtration discharge port 6 Ejection port 8 Liquid supply port 20 Filter material 24 Extraction filter material 32 Pump

Claims (1)

[Scope of utility model registration request] 1. A filter having a filter outlet for filtering and discharging a liquid in a filter tank by a filter medium, and a take-out port for taking out the liquid in the filter tank, wherein the filter material is substantially provided at the take-out port. A liquid removing device for a filter, wherein a take-out filter material having the same filtering performance is attached.