JPH0719368A - Flow rate stabilizing valve - Google Patents

Abstract

PURPOSE:To maintain a predetermined flow rate at a fixed rate at all times irrespective of fluctuation of flow rate by making a valve member open and close one fluid passage via a diaphragm in accordance with changes of pressure of the other fluid passage in a flow rate stabilizing valve which is provided in an electrolytic ion water forming device. CONSTITUTION:A diaphragm 4 which partitions both passages 2, 3 liquid-tightly into a first fluid passage 2 in which fluid flows from an inlet A to an outlet A' and a second fluid passage 3 in which fluid flows from an inlet B to an outlet B' is provided in a valve casing 1 in which both passages 2, 3 are formed. A flow port 5 which is formed in the second fluid passage 3 is opened and closed by a valve member 6 provided in the diaphragm 4 which is elastically supported by springs 10, 11 provided over and under the diaphragm 4. When pressure is changed due to fluctuation of a flow rate in the first fluid passage 2, the diaphragm moves vertically in accordance with the changes of pressure, and the flow rate of fluid which passes through the second fluid passage 3 is proportionally changed by the valve member 6 which comes into contact with and is separated from the flow port 5 so that a fixed flow rate is approximately maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically changes the flow rate of the other fluid passage in response to a change in the flow rate of one of the fluid passages of the two systems set to a predetermined flow rate to obtain the desired flow rate or the desired flow rate. The present invention relates to a flow rate stabilizing valve that maintains a ratio close to.

[0002]

When the flow rate of one of the two fluid passages set to a predetermined flow rate ratio (per unit time) changes, the flow rate ratio naturally changes. Therefore,
In order to maintain the predetermined ratio, the other flow rate must be adjusted accordingly, and the adjusting operation is troublesome. For example, in a water-flowing electrolytic ion water generator that separately discharges alkaline water and acid water from a pair of drain pipes from an electrolytic cell of a water-flowing electrolytic ion water generator, an alkaline water drain pipe and an acidic water drain pipe Although the flow rate ratio of the channel is preset to 2: 1 for example, if the flow rate of one drainage channel is reduced, the water supplied to the electrolytic cell will flow to the other drainage channel with less resistance, The ratio will increase from the predetermined ratio.
The same problem occurs when a deposit such as calcium adheres to the alkaline water drainage pipe, and the intended water regulation cannot be performed.

Therefore, a first object of the present invention is to automatically control the flow rate of the other system in response to the flow rate fluctuation of one of the two fluid passages set to a predetermined flow rate ratio. It is an object of the present invention to provide a flow rate stabilizing valve which can maintain the flow rate ratio of or close to this.

A second object of the present invention is to provide the flow rate stabilizing valve which also has a flow switch function for detecting a flow rate fluctuation and transmitting a signal.

[0005]

In order to achieve the above first object, the present invention provides a first fluid passage and a second fluid passage which are partitioned by a diaphragm inside a valve casing. Stroke of the valve member that is configured to be displaced in response to the pressure change of the valve, and that is fixed to the diaphragm with a valve member that controls opening and closing of the internal flow port of the second fluid passage, and that operates integrally with the diaphragm. Therefore, the flow passage cross-sectional area of the second fluid passage is changed in proportion to the flow rate fluctuation of the first fluid passage.

In order to achieve the second object,
According to the present invention, a valve seat opening is provided in the first fluid passage of the flow rate stabilizing valve, and a control chamber partitioned by a diaphragm is provided at an upper portion of the passage upstream of the valve seat opening. The diaphragm controls opening and closing of the valve seat opening. While fixing the valve body, a through hole that communicates the control chamber and the valve seat downstream side is formed in the axis of the valve body, and the control chamber detects the position of the valve body and outputs a detection signal. It is characterized in that a switch device for transmitting is provided.

[0007]

The flow rate stabilizing valve of the present invention is used by connecting one of the fluid lines of the two systems in which the flow rate is preset to the first fluid passage and the other to the second fluid passage. To be done. When the flow rate of the first fluid passage fluctuates due to the operation of a flow rate adjusting means such as a valve or a faucet provided in the upstream or downstream pipeline of the first fluid passage, or the deposition of deposits on the fluid pipeline, The diaphragm between the first, second, and fluid passages operates due to the pressure change in the fluid passage, and the opening and closing of the flow passage of the second fluid passage causes the opening and closing of the second fluid passage due to the approach and separation of the valve member fixed to the diaphragm. It changes in proportion to the fluctuation, and the flow rate ratio is automatically adjusted to a predetermined ratio.

Further, a valve seat opening is provided in the first fluid passage, a control chamber partitioned by a diaphragm is provided in an upper portion of the passage on the upstream side of the valve seat opening, and a valve element for controlling opening and closing of the valve seat opening is fixed to the diaphragm. At the same time, a through hole is formed in the axial center of the valve body to connect the control chamber and the downstream side of the valve seat opening, and a switch device for detecting the position of the valve body and transmitting a detection signal to the control chamber is provided. When provided, in addition to the above-mentioned action, the valve member of the first fluid passage and the valve element of the second fluid passage control the opening and closing of the flow passage of each passage by the flow rate fluctuation of the first fluid passage, and A detection signal is transmitted from the switch that detects the open / closed position. This signal is ON, OF of related equipment (for example, electrolysis unit of electrolyzed water generator).
It is used as an F signal and a flow rate display signal.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The valve casing 1 includes a first fluid passage 2 through which a fluid flows from an inlet A to an outlet A'and an inlet B to an outlet B.
′ Has a second fluid passage 3 through which a fluid flows, and the first fluid passage 2 and the second fluid passage 3 are liquid-tightly partitioned by a diaphragm 4. At the center of the second fluid passage 3, a flow port 5 is provided.
And the valve member 6 directed to the flow port 5 is fixed to the diaphragm 4, and the valve member 6 is operated by the operation of the diaphragm 4 accompanying the pressure fluctuation of the first fluid passage 2. The opening and closing of the flow port 5, that is, the flow rate of the second fluid passage 3 is adjusted.

The valve of the present invention responds to the change in the pressure due to the fluctuation of the flow rate in the first fluid passage 2 in response to the change in the second pressure.
Although the flow rate of the fluid passage 3 is automatically adjusted to maintain a constant flow rate ratio, the first fluid passage 2 increases in pressure when the flow rate is throttled on the outlet A'side. Exit A
When the flow rate is throttled on the side, the pressure rises. For this reason,
The valve member 6 approaches and separates from the flow port 5 of the second fluid passage 3 depending on whether the flow rate of the first fluid passage 2 is changed at the inlet A side or the outlet A ′ side due to the flow rate adjusting means or scale adhesion. It is necessary to reverse the direction.

FIG. 1 shows an embodiment in which a flow rate changing means 7 such as a valve is provided on the outlet A'side of the first fluid passage 2, and in this case, the valve member 6 of the second fluid passage 3 has a flow port 5 It is arranged on the upstream side. Thus, the flow rate adjusting means 7 on the outlet A'side
When the pressure is reduced, the internal pressure of the fluid passage 2 rises, whereby the valve member 6 of the third fluid passage 3 approaches the circulation port 5 as the diaphragm 4 is pressed downward in the figure, and the second fluid passage 3 The flow rate of is automatically throttled. On the other hand, when the opening degree of the flow rate adjusting means 7 is increased on the outlet A'side, the internal pressure of the first fluid passage 2 is lowered, so that the diaphragm is displaced upward, and accordingly, the valve member 6 is separated from the flow port 5, The flow rate of the second fluid passage 3 increases.

FIG. 2 shows an embodiment in which the flow rate changing means 7 is provided on the inlet A side of the first fluid passage 2. In this case, the valve member 6 of the second fluid passage 3 is arranged downstream of the flow port 5. Set up.
In this embodiment, if the flow rate adjusting means 7 on the inlet A side is throttled,
Although the internal pressure of the fluid passage 2 is reduced and the diaphragm 4 is displaced toward the first fluid passage 2 side, the valve member 6 is located on the downstream side of the passage opening 5 and therefore approaches the passage opening 5, and the flow rate of the second fluid passage 3 is increased. To reduce. Further, when the opening degree of the flow rate adjusting means 7 is increased to increase the flow rate, the internal pressure of the first fluid passage 2 rises, the valve member 6 separates from the flow port 5, and the flow rate of the second fluid passage 3 increases. .

In the embodiment of FIG. 3, regardless of whether the flow rate fluctuation of the first fluid passage 2 occurs on the inlet A side or the outlet A'side of the passage 2, the flow rate of the second fluid passage 3 is automatically adjusted accordingly. 1 shows a flow rate stabilizing valve of the present invention to be adjusted. For this purpose, the valve member 6 has a valve body 8a located upstream of the flow port 5 and a valve body 8b located downstream thereof integrated by a rod 9. It is a combined configuration. The flow rate stabilizing valve of this embodiment is particularly useful when used for stabilizing the flow rate of the alkaline water drainage line and the acidic water drainage line of the electrolytic ion water generator. This is because it is not always specified whether the blockage of the conduit due to the adhesion of calcium precipitated from the alkaline water occurs on the inlet side or the outlet side of the first fluid passage.

The operation of the diaphragm 4 and the valve member 6 due to the pressure fluctuation of the first fluid passage 2 is stabilized, and the flow rate adjustment of the second fluid passage 3 responds smoothly to the flow rate variation of the first fluid passage 2. Therefore, preferably, as shown in the drawing, the movable member composed of the diaphragm 4 and the valve member 6 is biased by the spring 10 in the direction to close the flow port 5, and the second fluid passage 3
So that the flow rate of is increased against the spring.

More preferably, another spring 11 for urging the movable body in a direction opposite to the urging direction of the spring 10 is provided, and the movable member is intermittently supported by a pair of upper and lower springs 10, 11. I will let you. This structure is particularly useful when the flow rate ratio between the first fluid passage 2 and the second fluid passage 3 is not 1: 1. The springs that support the valve member 6 from below (spring 11 of the embodiment of FIG. 1, spring 10 of the embodiments of FIGS. 2 and 3) are
The spring adjusting member 12 is engaged with the casing so as to be movable back and forth by screwing or the like, and the base end 13 of the spring adjusting member 12 is exposed to the outside of the casing so that the spring pressure can be adjusted from the outside. Is desirable.

FIG. 4 shows another embodiment of the present invention when the flow rate adjusting means 7 is provided on the outlet A'side of the first fluid passage 2 for use. In this embodiment, further, a valve seat opening 14 similar to the flow port 5 of the second fluid passage 3 is provided in the first fluid passage 2 and the first fluid passage 2 and the control chamber 15 are partitioned upstream of the flow opening 14. A diaphragm 16 is stretched, and a valve body 17 for integrally controlling the flow rate by approaching / separating from the valve seat opening 14 of the first fluid passage 2 is attached to the diaphragm 16. A through hole 18 is formed in the axial center of the valve body 17 to connect the downstream passage of the valve seat opening 14 and the control chamber 15 above the diaphragm 16. In order to stabilize the operation, the diaphragm 16 and the valve body 17 above the first fluid passage 2 are preferably biased by a spring 19 in the direction of closing the valve seat 14 with an appropriate spring pressure as shown in the figure.

A switch device 20 for detecting the position of the valve member 17 and transmitting a signal is installed in the control chamber 15 above the diaphragm 16. The switch device 20 of the embodiment shown in FIG. 4 comprises a reed switch 20a detachably inserted from the top of the casing 1 and a magnet 20b fixed to a frame 21 integral with the valve body 17, and the movement of the magnet 20b causes the valve body 17 to move. The position, that is, the flow of the fluid in the first fluid passage 2 is detected, and a detection signal is transmitted from the switch 20a. This detection signal is
For example, it can be used for an electrolysis ON-OFF signal of an electrolytic ionized water device.

Thus, in the embodiment of FIG. 4, the flow rate of the second fluid passage 3 is proportionally changed in response to the change of the flow rate of the first fluid passage 2 by the same action as that of the embodiment of FIG. 1, and the flow rate ratio is maintained. In addition, the operation as a two-stage flow valve with a switch can be obtained as described below. That is, when the flow rate adjusting means 7 is closed, the flow port 5 of the second fluid passage 3 is closed and the fluid in the first fluid passage 2 is closed by the control chamber 15.
Flow into the first fluid passage 2 due to pressure rise in the control chamber.
The valve seat openings 14 of both are closed together. On the other hand, when the flow rate adjusting means 7 is opened, the downstream side of the flow port 14 of the first fluid passage 2 is depressurized, so the flow ports 5 of the first and second fluid passages 2 and 3 and the valve seat port 14 are formed.
Open together. The reed switch 20a detects the position of the valve body 17 at the time of opening and closing, and a detection signal is transmitted.

[0019]

As described above, according to the present invention, when the flow rate of the first fluid passage fluctuates, the flow rate of the second fluid passage changes proportionally and the flow rate ratio is automatically adjusted to a predetermined value. This eliminates the need for adjustment when the flow rate fluctuates, and prevents troubles due to the malfunction of the ratio. In addition, the valve of the present invention can contribute to safety and high quality over a wide range of uses such as generation of electrolyzed water and mixing of chemicals.

Further, as in the embodiment of FIG. 4, the added value is remarkably increased by providing the two-stage flow valve function provided with the signal transmission device.

[Brief description of drawings]

[Figure 1]

[Fig. 2]

[Fig. 3]

FIG. 4 is a vertical sectional view of a flow rate stabilizing valve showing each embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Valve casing, 2 ... 1st fluid passage, 3 ... 2nd fluid passage, 4, 16 ... Diaphragm, 5, 14 ...
Flow port, 6 ... Valve member, 7 ... Flow rate adjusting means, 8a, 8
b ... Valve body, 10, 11, 19 ... Spring, 12 ... Spring adjusting member, 14 ... Valve seat, 15 ... Control chamber, 1
7 ... Valve body, 20a ... Reed switch, 20b ... Magnet.

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[Procedure amendment]

[Submission date] April 3, 1992

[Procedure Amendment 1]

Claims (7)

[Claims] 1. A first fluid passage and a second fluid passage that are partitioned by a diaphragm inside a valve casing are provided.
The diaphragm is configured to be displaced in response to a pressure change in the first fluid passage, and a valve member for controlling opening / closing of an internal flow passage of the second fluid passage is fixed to the diaphragm to operate integrally with the diaphragm. A flow rate stabilization valve, wherein the flow passage cross-sectional area of the second fluid passage is changed in proportion to the flow rate fluctuation of the first fluid passage by the stroke of the valve member. 2. The flow rate stabilizing valve according to claim 1, wherein the valve body large diameter portion of the valve member is disposed upstream of the flow port of the second fluid passage. 3. The flow rate stabilizing valve according to claim 1, wherein the large diameter portion of the valve body of the valve member is arranged on the downstream side of the flow port of the second fluid passage. 4. The valve member integrally includes a valve body arranged downstream of the flow port of the second fluid passage and a valve body arranged downstream thereof. Flow rate stabilization valve. 5. A valve seat opening is provided in the first fluid passage, a control chamber partitioned by a diaphragm is provided at an upper portion of the passage on the upstream side of the valve seat opening, and a valve element for controlling the opening and closing of the valve seat opening is fixed to the diaphragm. At the same time, a through hole that connects the control chamber and the downstream side of the valve seat opening is formed in the axial center of the valve body.
The flow rate stabilizing valve according to claim 2, further comprising a switch device for detecting the position of the valve element and transmitting a detection signal to the control chamber. 6. The diaphragm and the valve member are constituted by an upper spring for urging the diaphragm between the first fluid passage and the second fluid passage toward the second fluid passage and a lower spring for urging the valve member in the opposite direction. The flow rate stabilizing valve according to claim 2, 3, 4, or 5, wherein the valve is elastically supported. 7. Stabilizing the flow rate according to claim 1, 2, 3, 4, 5, or 6, wherein the casing side spring bearing of the lower spring is screwed so as to face the outside of the casing so as to move back and forth. valve.