JP3052598U - Free residual chlorine concentration variable type water filtration device - Google Patents

Abstract

(57) [Summary] The present invention provides a water filtration device with a bypass and a control valve to control the free residual chlorine concentration of filtered water. SOLUTION: In the present invention, a filter 4 having a function of removing foreign substances is provided in a first filter tube 3, and a filter 6 of activated carbon having a function of removing foreign substances and free residual chlorine is provided in a second filter tube 5; On the other hand, a bypass pipe 8 is provided, a control valve 7 is provided in the middle of 8, and the opening degree of 7 is adjusted so that free residual chlorine can be adjusted without mixing unfiltered water into filtered water.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a water filtration device generally used as a water purifier for home and business use.

[0002]

[Prior art]

 Conventional household and commercial water filtration systems have either completely or almost completely removed free residual chlorine or no residual chlorine.

[0003]

[Problems to be solved by the invention]

 Numerous harms have been pointed out regarding free residual chlorine contained in sterilized well water and tap water, such as deteriorating the taste of drinking water and promoting discoloration of laundry. However, according to the law, tap water must have enough free residual chlorine to be detected in the terminal hydrant at a concentration of 0.1 ppm or more. This is necessary to prevent the propagation of various bacteria in the water supply, so if a conventional water filtration device is installed at a location far from the terminal hydrant, free residual chlorine cannot be removed. won. It is therefore an object of the present invention to eliminate the above-mentioned drawbacks by allowing the concentration of free residual chlorine in the filtered water to be adjusted arbitrarily.

[0004]

[Means for Solving the Problems]

 In the present invention, a filter medium having a function of removing foreign substances and a filter medium of activated carbon having a function of adsorbing and removing foreign substances and free residual chlorine are incorporated in a water filtration device in series, and a bypass pipe is provided for the filter medium of activated carbon. The problem was solved by providing a valve for adjustment in the middle of the bypass pipe.

[0005]

[Embodiment of the invention]

 A foreign matter removal filter is placed in the first filter cylinder to remove foreign matter having a certain particle size or more in water. Water that has passed through the first filter tube is branched into a second filter tube and a bypass pipe provided for the second filter tube. The opening of a control valve provided in the bypass pipe must be adjusted. Thus, the ratio of the flow rate of the water from which the free residual chlorine was removed through the second filter to the flow rate of the water from which the free residual chlorine was not removed through the bypass pipe was adjusted, whereby the free residual chlorine concentration in the filtered water was adjusted. Adjusted.

[0006]

【Example】

 Hereinafter, an embodiment will be described with reference to the accompanying drawings. Reference numerals 1 and 2 denote gate valves for stopping water, 3 denotes a first filter tube, and 4 denotes a foreign matter removing filter placed in the first filter tube. In 3, the water filtered by 4 partially enters the second filter column 5, and is further filtered by the activated carbon filter 6 contained therein to remove free residual chlorine and the like. In addition, part of the water passes through the bypass pipe of 8, so that it flows without removing free residual chlorine, etc., and is mixed with the water coming out of 4 and supplied as filtered water. The free residual chlorine concentration in the filtered water can be adjusted by adjusting the opening of the control valve (7). In addition, 9 to 14 are all water guide pipes.

[0007]

[Effect of the invention]

 As described above, the free residual chlorine concentration variable water filtration device of the present invention not only helps to remove foreign substances in water, but also has a control valve and a bypass pipe, so that the concentration of free residual chlorine can be freely adjusted. In addition, since the bypass pipe is provided not for the entire filter but for the second filter pipe, the water passing through the bypass pipe is also water that has been filtered by the first filter pipe, and water that is not filtered at all is filtered water. There is no mixing.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a variable free residual chlorine concentration type water filtration device of the present invention.

FIG. 2 is a cutaway sectional view of a first filter tube of the present apparatus.

FIG. 3 is a cutaway sectional view of a second filter tube in the present apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 gate valve 2 gate valve 3 first filter tube 4 foreign matter removal filter 5 second filter tube 6 activated carbon filter 7 control valve 8 bypass pipe 9 water pipe 10 water pipe 11 water pipe 12 water pipe 13 water pipe 14 water pipe

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[Procedure amendment]

[Submission date] April 16, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

Claims (2)

[Utility model registration claims] 1. A water filtration apparatus, wherein a bypass pipe is provided in the water filtration apparatus, and the free residual chlorine concentration of the filtered water is adjustable by an opening of a valve provided in the bypass pipe. 2. A filter material having a function of removing foreign matter and a filter material of activated carbon having a function of adsorbing and removing foreign matter and free residual chlorine are incorporated in series in a water filtration device, and the filter material of activated carbon is described as 1. A water filtration device characterized by preventing supply of water mixed with unfiltered water even when the concentration of free residual chlorine is adjusted by providing a bypass pipe.