JPH0631892U - Sterilizing water production equipment - Google Patents

Abstract

(57) [Summary] [Purpose] In a sterilizing water production apparatus that uses a continuous water-flowing water electrolysis apparatus, the pH of the electrolyzed water and the chemical concentration are kept constant against fluctuations in water pressure of the raw water, and sterilizing water is maintained. Make quality control easy. [Structure] A constant flow rate control means is provided in the raw water supply pipe before the addition of the chemical liquid introduced from the water supply part of the electrolytic cell. As a constant flow rate control means, a constant volume plunger pump equipped with a variable volume adjuster for the pump chamber is used.

Description

[Detailed description of the device]

[0001]

[Field of use of the device]

 The present invention relates to an improvement in a device for electrolyzing non-diaphragm electrolysis of water obtained by adding a germicide solution to raw water and diluting the produced electrolyzed water with raw water to produce sterile water.

[0002]

[Prior art]

 Sterilized water production in which raw water supplied to the diaphragmless electrolyzer is mixed with a sterilizing water manufacturing chemical such as sodium chloride and hydrochloric acid, electrolyzed without diaphragm, and the concentration is adjusted by diluting the resulting sterilized water with raw water. A device is disclosed in Japanese Patent Laid-Open No. 4-94785.

[0003]

[Problems to be solved by the device]

 Since the water supply line of the sterilizing water manufacturing equipment is used by connecting it to a water pipe, etc., it is subject to water pressure fluctuations, and when the water pressure changes, the mixing ratio of raw water and chemical liquid changes, making it difficult to adjust the residual chlorine concentration of sterilizing water by diluting water Become.

An object of the present invention is to provide an apparatus for producing sterilizing water in which the concentration of the sterilizing component can be easily adjusted by diluting water by keeping the flow rate constant against fluctuations in the water pressure of the raw water.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention adds a chemical solution for producing sterilizing water to raw water supplied from a water supply line, electrolyzes it in a diaphragmless electrolytic cell, and dilutes generated electrolyzed water with raw water. In the sterilizing water production apparatus, a constant flow rate control means for maintaining a constant flow rate against fluctuations in water pressure is provided in the raw water supply pipe line before chemical solution addition, which is introduced into the water supply section of the electrolytic cell. To do.

[0006]

[Action]

 By installing a constant flow rate control means such as a metering pump or a constant flow valve in the raw water supply pipe before the addition of the chemical solution for sterilizing water production such as sodium chloride or hydrochloric acid, the water pressure in the supply pipe was changed. Also, the flow rate of the water supply pipe to which the chemical solution is added is maintained at a desired set flow rate by the constant flow rate control means. Therefore, the concentration of the sterilizing component such as residual chlorine in the electrolyzed water generated in the electrolysis tank is kept constant, so that the concentration can be accurately adjusted only by the mixing amount of the diluting water.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a continuous water-type sterilizing water production apparatus according to an embodiment of the present invention, in which a raw water supply pipe line 1 connected to a water pipe is connected to a water supply section 2a of a diaphragmless electrolyzer 2 to form an electrolyzer. Raw water is to be supplied to No. 2.

The raw water supply pipeline 1 is connected to a chemical solution supply pipeline 5 led from a sterilizing chemical solution tank 4 such as sodium chloride or hydrochloric acid. A check valve 6 and a metering pump 7 are provided in the chemical liquid supply conduit 5 so that the chemical liquid in the tank 4 is supplied to the raw water supply conduit 1 at a predetermined flow rate.

The water supply pipe 1 branches a dilution water circuit 8 from the upstream side of the confluence with the chemical liquid supply pipe 5, and the dilution water circuit 8 is connected to the drainage part 2b of the electrolytic cell 2 to obtain the raw water. A part is mixed with the electrolytic sterilization water generated in the electrolysis tank 2 so as to be diluted. Reference numeral 9 is a valve for adjusting the flow rate of the dilution water circuit.

A drainage pipe 10 is connected to the drainage section 2b of the electrolytic cell 2, and in the embodiment shown in the figure, a water intake tap 11 is provided at the tip of the drainage pipe 10.

In the embodiment shown in the figure, the drain pipe 10 is provided with a mixing cylinder 13 and a silver electrolysis section 14. The electrolysis water and the diluting water are well mixed in the mixing cylinder 13, and the electrolysis water is electrolyzed in the silver electrolysis section 14. The silver ion is eluted into the water, and the silver ion and the hydroxide ion in water produce silver hydroxide AgOH in water.

In such an electrolyzed water producing apparatus, the present invention is directed to a raw water supply circuit 1 (in the embodiment shown in the drawing, upstream of a confluence portion of a chemical solution supply line) before a chemical solution is supplied, and a constant pump is provided. A constant flow rate control means 15 such as a flow rate valve is provided so that the flow rate can be kept constant at a predetermined amount with respect to fluctuations in the water pressure of the raw feed water.

When the metering pump 7 is also used for the chemical liquid supply conduit 5 as shown in the figure, preferably, the metering pump used as the constant flow rate control means 15 of the water supply conduit 1 is used, and the two metering pumps are commonly used. The motor 16 is operated.

FIGS. 2 and 3 show a pump assembly 17 incorporating a constant flow pump 15 ′ of the raw water supply pipe 1 and a metering pump 16 of the chemical liquid supply pipe 5. This pump assembly 17 is a pump casing. 18 has a pair of left and right pump chambers 19.20, and a pair of water supply members 19a, 20a and a pair of drainage members 19b, 20b corresponding to the respective pump chambers 19, 20 are attached.

In the central working chamber 21 of the pump casing 17, an operating piece 24, in which a pair of plungers 22 and 23 are integrally fixed on both left and right sides, is provided. , 20 inside the working chamber 21 so as to be slidable left and right, and at the tips of the left and right plungers 22, 23 diaphragms 25, 26 for partitioning the respective pump chambers 19, 20 in a liquid-tight manner. Are combined. By the reciprocating motion of the operating piece 24, the tips of the left and right plungers 22, 23 are alternately projected and retracted toward the respective pump chambers 19, 20.

As shown in FIGS. 3 and 4, the actuating piece 24 has a motor 27, an eccentric pin 29 fixed to a shaft 28 of the motor 27, and one end of which is attached to a side wall of the actuating piece 24 by a pin 30. Then, the other end is actuated by a link 31 pivotally attached to the eccentric pin 29, and the eccentric pin 29 and the link 31 convert the rotational motion of the motor 27 into a left and right linear motion to reciprocate left and right in the working chamber 21. It is assembled to move.

The water supply members 19a, 20a and the drainage members 19b, 20b are opened and closed in the respective internal passages 32 leading to the pump chambers 19, 20 in the opposite direction to the suction and compression of the pump chambers 19, 20. The stop valves 33 and 34 are provided. That is, the check valves 33 of the water supply members 19a and 20a are opened by suction of the pump chambers 19 and 20 and closed by compression, and the check valves 34 of the drainage members 19b and 20b are opened by compression of the pump chambers 19 and 20 and sucked. The check directions of the check valves 33 and 34 are reversed so that the check valves 33 and 34 are closed.

The pump chambers 19 and 20 are inserted by screwing or the like from the outside toward the inside of the pump chambers 19 and 20 so that the pump chambers 19 and 20 can be moved back and forth to adjust the volumes of the pump chambers 19 and 20 to increase the pumping capacity. The adjuster 35 for changing is attached.

As shown in FIGS. 2 and 3, the adjuster 35 preferably has a tip member 37 that is supported by a diaphragm 36 in a liquid-tight manner and retractably with respect to the pump chambers 19 and 20, and is rotated to the rear portion of the tip member 37. The adjustment member 38 is engaged with the adjustment member 38 so that it can be elastically moved forward and backward by a flange member 39 screwed to the outside of the adjustment member 38 and a spring 41 fitted between the bracket 40 integrated with the casing 18. Has been done.

Thus, as shown in FIG. 5, by rotating the rear end of the adjusting member 38 from the outside to adjust the screwing position on the flange member 39, the tip member 37 of the adjuster 35 is moved to the pump chamber 19. , 20 so that the volumes of the pump chambers 19, 20 are adjusted to adjust the pump discharge rate. The adjusters 35 for the pump chambers 19 and 20 can be adjusted independently.

Since the strokes of the plungers 22 and 23 are constant, when the tip end member 37 of the adjuster 35 enters the inside of the pump chambers 19 and 20, when the plungers 22 and 23 move to the discharge side, In some cases, the adjusting member 38 of the plunger 35 is supported by a spring 41 so as to be movable back and forth, so that it does not interfere with the operation of the plungers 22 and 23. Therefore, the variable range of the volumes of the pump chambers 19 and 20, that is, the flow rate adjustment range of the pump can be set wide.

In the illustrated embodiment, the diaphragms 25, 26 and 36 are used as sealing means for the plungers 22 and 23, the adjuster tip member 37 and the pump chambers 19 and 20, respectively, and the back surfaces of these diaphragms are supported by receiving members. It has a structure that That is, when a sealing member such as an O-ring swells by containing water, the frictional resistance may change and the pump amount may be modulated. However, using a diaphragm solves this problem. Also, by supporting the back surface of the diaphragm with a receiving member, it does not expand due to water pressure, and when it moves to the pump chamber side, it deforms so as to protrude toward the pump chamber side as shown in Fig. 5, so it does not extend in the extension direction. It does not receive pressure and has good durability.

Thus, the pump assembly 17 constitutes the water supply constant amount pump 15 and the chemical liquid constant amount pump 7 of the sterilizing water manufacturing apparatus of FIG. 1, so that the water supply and the chemical liquid can be quantitatively supplied by one pump device. At the same time, by adjusting the volumes of the pump chambers 19 and 20 with the adjuster 35, the mixing ratio of the raw water and the chemical liquid can be variously changed.

In the figure, 42 is a flow switch that detects the flow of raw water by opening and closing the faucet 11 and controls ON / OFF of energization to the electrode of the electrolytic cell, and 43 is a pilot of the secondary pressure fluid. It is a constant flow valve that keeps the flow rate constant by pressure.

[0025]

[Effect of device]

 As described above, according to the present invention, the constant flow rate control means is provided in the raw water supply line connected to the water supply section of the electrolytic cell, so that electrolysis is performed in the electrolytic cell of the raw water supply line even if the water pressure changes. The mixing ratio of raw water and chemical solution becomes constant. Therefore, the pH and chlorine concentration of the electrolyzed water generated in the electrolyzer can be maintained at the desired values, and the pH and chlorine concentration of the sterilizing water can be adjusted simply by adding the amount of dilution water, making quality control significantly easier. Become.

By using the metering plunger pump equipped with the adjuster for adjusting the volume of the pump chamber as the constant flow rate control means, the mixing ratio of the raw water and the chemical solution can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a sterilizing water manufacturing apparatus according to the present invention,

2 is a longitudinal sectional view of a pump assembly used in the device of the present invention, FIG.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a partial assembly view of the pump assembly of FIG.

5 is an operation explanatory diagram of the adjuster shown in FIG. 1,

[Explanation of symbols]

1 ... Raw water supply line, 2 ... Electrolyzer, 2a ... Water supply section,
2b ... Drainage part, 4 ... Chemical solution tank, 5 ... Chemical solution supply line, 7 ... Pump, 8 ... Diluting water circuit, 10 ... Drainage line, 11 ... Faucet, 13 ... Mixing cylinder, 14 ... Silver electrolysis part, 15 ... Constant flow control means, 16 ... Motor, 17
... pump assembly, 18 ... pump pump casing, 19, 20 ... pump chamber, 21 ... central working chamber,
22, 23 ... Plunger, 24 ... Actuating piece, 25, 2
6, 36 ... Diaphragm, 27 ... Motor, 28 ... Motor shaft, 29 ... Eccentric pin, 30 ... Link, 33,
34 ... Check valve, 35 ... Adjuster, 37 ... Tip member, 38 ... Adjusting member, 39 ... Flange member, 40
... spring.

Claims (1)

[Scope of utility model registration request] 1. A chemical solution for producing sterilizing water is added to raw water supplied from a water supply line for electrolysis in a diaphragmless electrolytic cell,
In the sterilizing water production device that dilutes the generated electrolyzed water with raw water, the constant flow rate that is introduced into the water supply section of the electrolysis tank before the chemical solution is added to the raw water supply line to keep the flow rate constant against fluctuations in water pressure. An apparatus for producing sterilized water, comprising a control means. 1. The sterilized water production apparatus according to claim 1, wherein the constant flow rate control means is a metering pump having an adjuster for adjusting the volume of the pump chamber.