JP2007229613A - Dilution device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dilution device capable of securing an adequate discharge pressure even when a discharge port of dilution liquid is disposed on a position higher than the dilution device by using only a tap water pressure as a power without using other power such as electricity even for high-viscosity fluid such as chemicals of detergent, etc. and capable of preparing the dilution liquid of which the dilution rate is made substantially constant without using special sensors concerning water quantity and dilution concentration. <P>SOLUTION: The dilution device is provided with: a closed flow path constituted by connecting a feed-water port of tap water, a water path A, a water turbine, a water path B, a check valve, a water path C and a discharge port of dilution liquid in the order; a crank mechanism which is connected with a rotation shaft of the water turbine and converts a rotating motion of the water turbine driven by tap water flowing through the flow path into a linear reciprocating motion; and a diaphragm pump comprising a diaphragm of performing a linear reciprocating motion by the crank mechanism, a check valve of chemical suction side and a check valve of chemical discharge side, wherein a discharge port of chemicals from the check valve of chemical discharge side is connected to a middle part of the water path C via a chemical pipe D. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a diluting device, and more particularly to a diluting device that creates a diluting solution for hand washing by mixing a chemical solution such as a detergent and tap water.

  Various devices have been developed as such a diluting device, and a method of extruding a chemical solution with a finger-pump pump is simple, but a uniform diluted solution cannot be obtained. Therefore, a method using external power other than manual has been proposed.

  For example, in Patent Document 1, a water turbine is rotated using tap water pressure itself, and this rotational power is transmitted to a vane pump via a reduction gear, and a chemical solution is pumped by the vane pump and mixed with tap water downstream of the turbine. A technique for making a diluent is disclosed.

  According to this method, the driving force of the vane pump, and hence the mixing amount of the chemical solution is substantially proportional to the amount of tap water, so that a dilute solution having a substantially constant concentration can be obtained regardless of the amount of water without using a separate power or control mechanism. .

However, this method requires a water wheel, a reduction gear, a vane pump, and a shield (watertight) transmission mechanism between them, so that the structure is complicated and expensive.
On top of that, the vane pump has many sliding parts, and energy loss is large for pumping a highly viscous fluid such as a chemical solution. Therefore, a high torque is required at a low rotational speed, and a required rotational torque is obtained. The water wheel must be rotated at a high speed, and a reduction gear must be provided between the rotation shaft of the water wheel and the drive shaft of the pump.
As a result, most of the tap water pressure is used for the rotational power of the water turbine, and the pressure of the dilution liquid downstream of the water wheel decreases, making it difficult to discharge the dilution liquid from a position higher than the flow path below the water turbine.

  In addition, when the tap water does not flow, the vane pump is generally exposed to the air, so if you do not use it for a long time, especially when soap is used as the chemical, the remaining chemical will dry and solidify, causing the vane pump to stop working. There is.

Therefore, according to Patent Document 2 which is the invention of the present inventor, a dilution device using a combination of a check valve and a diaphragm pump is disclosed.
According to this method, the structure is simple and there is almost no energy loss due to friction, and even a highly viscous fluid can be efficiently delivered.

  In this case, since the dilution chamber is provided in the upper part of the pump chamber, the pump chamber can be always filled with a chemical solution so as not to be exposed to air.

However, in this system, a diaphragm pump is driven, so that a separate driving device such as a solenoid is required although it is small power.
In addition, in order to make the dilution concentration substantially constant, it is necessary to provide a tap water amount or dilution concentration sensor and control the diaphragm pump drive device by the sensor output.
Japanese Patent Laid-Open No. 11-179183 JP 2004-008595 A

  The purpose of the present invention, which has been made to solve the various problems in the diluting apparatus as described above, is to use a highly viscous fluid such as a chemical solution such as a detergent to power only the water pressure without using other power such as manpower or electricity. It is intended to provide a diluting device that can secure a sufficient discharge pressure even when the discharge port for the diluting solution is installed at a position higher than the flow path below the water wheel.

  Another object of the present invention is to provide a diluting apparatus for producing a diluting solution having a substantially constant diluting rate without using separate sensors for water amount and diluting concentration.

  Still another object of the present invention is to provide a diluting device that does not solidify even when the non-use period is long and can be used at any time including immediately after the long non-use period.

  A diluting device according to the present invention, which has been made to solve the above-mentioned problems, includes a tap water supply port, a water channel A, a water wheel, a water channel B, a check valve, a water channel C, and a discharge of a diluting solution. A closed flow path configured by connecting outlets in this order; a crank mechanism connected to a rotating shaft of the water wheel and converting the rotational movement of the water wheel by tap water flowing through the flow path into a reciprocating movement; It is configured to include a diaphragm that reciprocates linearly by a mechanism, a chemical solution suction side check valve, and a chemical solution discharge side check valve, so that the chemical solution can move in one direction due to the volume change caused by the linear reciprocating motion of the diaphragm A chemical solution discharge port from the chemical solution discharge side check valve is connected to an intermediate portion of the water channel C through a chemical solution pipe D, and tap water and chemical solution are mixed to form the dilution liquid. Dilution Characterized in that the constructed as discharged from the discharge port.

  Further, according to a second aspect of the present invention, a bypass water channel provided with a flow rate adjusting valve is provided between an intermediate part of the water channel A and an intermediate part of the water channel B in the flow channel.

  According to a third aspect of the present invention, the connecting portion of the water channel A with the water wheel has a shape (nozzle shape) whose diameter gradually decreases.

  According to a fourth aspect of the present invention, the chemical solution suction side check valve is disposed at a position lower than a connecting portion between the intermediate portion of the water channel C and the chemical solution pipe D.

  Moreover, as shown in Claim 5, the said chemical | medical solution pipe | tube D is provided with the reverse U-shaped part, and the vertex of the said reverse U-shaped part is arrange | positioned in the position higher than the said chemical | medical solution discharge side check valve. Features.

  According to the diluting device according to the present invention, it can be operated only by water pressure, and does not require other power such as manpower and electricity, so that it is easy to use and an inexpensive and compact diluting device can be obtained.

  In the diluting device according to the present invention, the water turbine chamber and the chemical solution pump chamber are separated by a diaphragm, so that a high viscosity chemical solution can be efficiently pumped even when a small amount of water is used as a power source. Since the diluted liquid can be discharged while leaving a sufficient discharge pressure at a position higher than that of the present dilution apparatus, the restriction on the place where the chemical solution and the dilution apparatus are placed is eliminated.

Furthermore, since the dilution rate of the chemical solution can be maintained substantially constant without using expensive sensors and control devices regardless of changes in the water pressure and the amount of water, an inexpensive and compact dilution device can be obtained.

  Hereinafter, embodiments and effects according to the present invention will be described in detail with reference to FIGS.

1, 2, and 3 are respectively a front view, a side view, and a cross-sectional view taken along the line aa of the dilution apparatus according to the present embodiment.
The section line aa includes a section shift bb in the middle.

As shown in FIGS. 1 and 2, the water turbine 1 is fixed to a rotating shaft 2, and the rotating shaft 2 is rotatably supported by a shield ball bearing 4 with respect to a casing 3 in a watertight manner.
A part of the rotary shaft 2 protrudes outside the casing 3, and an eccentric cam 5 is fixed to the end of the shaft 3. The eccentric cam 5 is rotatably fitted inside the eccentric outer ring 65 via the radial bearing 6. One end of the crankshaft 7 is fixed to the eccentric outer ring 65, and the crankshaft 7 projects downward.

A flexible diaphragm 8 is attached to the other end of the crankshaft 7, and a pump chamber 9 is provided below the diaphragm 8. The diaphragm 8 covers a part of the upper wall of the pump chamber 9. .
Further, a chemical solution suction side check valve 10 and a chemical solution discharge side check valve 11 are provided on the side wall of the pump chamber 9.

Further, as shown in FIG. 3, the water channel A 13 passes through the side wall of the casing 3 and is inserted into the casing 3, one end of the water channel A 13 becomes the tap water supply port 12, and the other end of the water channel A 13 is the water wheel. 1 is connected.
A water channel B 14 is provided inside the casing 3, one end of the water channel B 14 is connected to the water wheel 1 at a position different from the water channel A 13, and the other end of the water channel B 14 is a check provided inside the casing 3. The water channel C 16 is connected to one end of the water channel C 16 through the valve 15, penetrates the side wall of the casing 3 and is inserted into the outside of the casing 3, and the other end of the water channel C 16 serves as a diluent discharge port 19.

The middle part of the water channel A 13 and the middle part of the water channel B 14 are connected by a bypass water channel 18 provided with a flow rate adjusting valve 17 on the way.
An intermediate portion of the water channel C 16 is connected to the chemical solution discharge side check valve 11 via the chemical solution pipe D 21, and one end of the chemical solution pipe E 22 is connected to the chemical solution suction side check valve 10. The end is a chemical solution inlet 23.
The portion of the casing 3 that accommodates the check valves 10, 11, 15 protrudes outward so as to be convenient for maintenance of the check valve 15.

Next, the operation of the present dilution device will be described.
As shown in FIG. 3, the water supplied from the tap water inlet 12 passes through the water channel A 13, and a part of the water gives a torque corresponding to the amount of water to the water turbine 1, and then the water channel B 14, check It flows through the valve 15 to the water channel C16.
The remaining amount of water is adjusted by the flow rate control valve 17, and then passes through the bypass channel 18 and merges in the middle of the channel B 14.

  The water turbine 1, and hence the eccentric cam 5, rotates at a speed corresponding to the applied torque, and the rotational movement of the eccentric cam 5 reciprocates (up and down in this figure) through the radial bearing 6 and the eccentric outer ring 65. Converted into movement.

On the other hand, the chemical solution supplied from the chemical solution inlet 23 enters the pump chamber 9 via the chemical solution suction side check valve 10, and the operation of the diaphragm 8 attached to the vertically moving crankshaft 7 causes the reverse side of the chemical solution discharge side. It is pumped to the water channel C 16 through the stop valve 11 and the chemical liquid pipe D 21, where it is mixed with tap water, that is, diluted and discharged from the diluent outlet 19.
The check valve 15 is disposed in order to prevent the backflow and diffusion of the diluted liquid to the water wheel side.

4 and 5 are diagrams showing the relationship between the rotational position of the eccentric cam 5 and the operation of the diaphragm 8.
In FIG. 4, that is, when the eccentric cam rotates and the center of the eccentric cam rotates to the top dead center, the diaphragm is lifted and the chemical solution is sucked.
On the other hand, when the center of the eccentric cam rotates to the bottom dead center in FIG. 5, the diaphragm is pushed down, and a certain amount of chemical solution is discharged.
In each case, since the chemical solution suction side check valve 10 and the chemical solution discharge side check valve 11 are interposed, the chemical solution does not flow back.

  Since a certain amount of chemical solution is discharged into the water channel C 16 every rotation of the eccentric cam 5, the discharge amount of the chemical solution is proportional to the rotational speed of the eccentric cam, that is, the flow rate of tap water supplied to the water turbine 1. As a result, the concentration of the diluted solution, that is, the mixing ratio of the chemical solution with respect to tap water is maintained substantially constant regardless of the amount of tap water.

In addition, this dilution rate can be adjusted by a flow rate adjusting valve 17 provided in the bypass flow path 18.
This is because the tap water flowing through the bypass channel 18 does not contribute to the operation of the diaphragm 8, and therefore, when the amount of bypass water is increased, the concentration of the diluent can be lowered accordingly.

  In this embodiment, since the position of the chemical solution discharge side check valve 11 is lower than the connecting portion between the chemical solution pipe D21 and the middle portion of the water channel C16, these check valves are always immersed in the chemical solution. Therefore, the check valve is not exposed to the air, and malfunction of the check valve due to drying and solidification of the chemical solution can be prevented.

FIG. 6 is a partial cross-sectional view of the dilution apparatus according to this embodiment.
In the present embodiment, unlike the first embodiment, the bypass water channel 18 is not provided, and the portion connected to the water turbine 1 in the water channel A 13 is the nozzle 20.
The structure and operation of other parts are the same as in the first embodiment.

  The action of the nozzle 20 converts part of the tap water pressure into a higher tap water flow velocity, so that the water stream collides with the blades of the turbine wheel at high speed, allowing the turbine to rotate at a higher speed and reducing the concentration of the diluent. Can be raised.

Furthermore, even when the supply amount of tap water is small, it is possible to overcome the friction and rotate the water wheel.
Or the density | concentration of a dilution liquid can also be adjusted using the nozzle which can adjust an aperture as the nozzle 20.
Conversely, the concentration of the diluent can also be adjusted by using the bypass channel 18 with the flow rate control valve 17 described in the first embodiment.

FIG. 7 is a front view of the dilution apparatus according to the present embodiment.
In the present embodiment, unlike the first embodiment, the chemical liquid pipe D 21 includes an inverted U-shaped portion 25 so that the apex of the inverted U-shaped portion 25 is higher than the chemical liquid discharge side check valve 11. It is arranged in.

In this case, the position of the chemical liquid discharge side check valve 11 is higher than the connecting portion between the chemical liquid pipe D 21 and the water channel C 16, but the chemical liquid discharge side check valve 11 is always immersed in the chemical liquid, The check valve can be prevented from malfunctioning due to the drying.
The structure and operation of other parts are the same as in the first embodiment.

That is, the position of the diaphragm pump chamber 9 can be set freely with respect to the position of the water channel C 16 and the water wheel 1 (this embodiment) or horizontally, and the dilution device can be mounted. Can increase the degree of freedom.

It is a front view of the dilution apparatus which concerns on a 1st Example. It is a side view of the dilution apparatus which concerns on a 1st Example. It is aa sectional drawing in FIG. It is a figure which shows the relationship between the rotation position of the eccentric cam which concerns on a 1st Example, and the operation | movement of a diaphragm. It is a figure which shows the relationship between the rotation position of the eccentric cam which concerns on a 1st Example, and the operation | movement of a diaphragm. It is a fragmentary sectional view of the dilution device concerning the 2nd example. It is a front view of the dilution apparatus which concerns on a 3rd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water wheel 2 Rotating shaft 3 Casing 4 Shield ball bearing 5 Eccentric cam 6 Radial bearing 65 Eccentric outer ring 7 Crankshaft 8 Diaphragm 9 Diaphragm pump chamber 10 Chemical liquid suction side check valve 11 Chemical liquid discharge side check valve 12 Tap water supply port 13 Water channel A
14 Channel B
15 Check valve 16 Water channel C
17 Flow Control Valve 18 Bypass Channel 19 Diluent Discharge Port 20 Nozzle 21 Chemical Pipe D
22 Chemical tube E
23 Chemical liquid inlet 25 Inverted U-shaped part of chemical liquid pipe D

Claims (5)

A sealed flow path constituted by connecting a tap water supply port, a water channel A, a water wheel, a water channel B, a check valve, a water channel C, and a diluting solution discharge port in this order;
A crank mechanism that is connected to the rotating shaft of the water wheel and converts the rotational motion of the water wheel by tap water flowing through the flow path into a reciprocating motion;
A diaphragm pump configured to include a diaphragm reciprocating linearly by the crank mechanism, a chemical solution suction side check valve, and a chemical solution discharge side check valve;
A diluting apparatus, wherein a discharge port of a chemical solution from the chemical solution discharge side check valve is connected to an intermediate portion of the water channel C through a chemical solution pipe D.   The diluting device according to claim 1, wherein a bypass water channel provided with a flow control valve is provided between an intermediate part of the water channel A and an intermediate part of the water channel B in the channel.   The diluting device according to claim 1, wherein a connecting portion of the water channel A with the water wheel has a shape (nozzle shape) whose diameter gradually decreases.   2. The dilution device according to claim 1, wherein the chemical solution suction side check valve is disposed at a position lower than an intermediate portion of the water channel C and a connection portion of the chemical solution pipe D. 3. The said chemical | medical solution pipe | tube D is provided with the reverse U-shaped part, and the vertex of the said reverse U-shaped part is arrange | positioned in the position higher than the said chemical | medical solution discharge side check valve. Dilution device.

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