JPS59180174A - Disconnectng device for fluid circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid circuit isolating device configured to be installed in a fluid circuit when it is desired to avoid contamination.

Flowing through the circuit is water, especially drinking water, or various liquids used in the chemical industry.

The principle of the fluid circuit disconnection device is as follows.

If the liquid is flowing in the direction that is considered normal, the isolating device connects the inlet circuit to the outlet circuit (allowing free flow of liquid there, or if the direction of liquid flow is reversed)
The isolation device automatically closes to prevent liquid in the outflow circuit that is considered contaminated from flowing back into the inflow circuit.

Isolation devices operating on this principle are well known. When the direction of flow is reversed, this single channel device operates to protect the inflow circuit and drain the inflowing liquid from the outflow circuit to the outside. This 1lIjiji device is used, for example, in chemical environments where the water is highly contaminated. That is, usually
The valve malfunctions and the liquid level is maintained at 14 f,; < f,
This is to prevent the tq dyed water from flowing back toward the clean water source even in the case of water. Historically, when an intermediate region is formed in the internal space of a lead-out device, it must be ensured that the contaminated water that feeds into this intermediate region is never sucked into the inflow circuit, that is, the l^ purification circuit. There is no /J.

Do conventionally known disconnection devices have certain effects?
Various defects were identified.

One of the reasons is that the structure is extremely complex. For this reason, even if it functions normally,
Guarantee of absolute safety in all cases
Otherwise, a serious accident may occur.

The object of the invention is to provide an isolating device which, in the event of an operational failure, will not cause a leak that is easily visible from the outside, but will not allow the body to flow into the contaminated outflow 71 and be sucked into the six circuits. The purpose is to eliminate the following drawbacks.

Historically, it is an object of the present invention to provide an isolating device N of simple construction using only conventional membranes and valves.

The fluid circuit disconnecting device according to the present invention comprises a hollow body,
The hollow body has a coupling connection member for the inflow circuit and a coupling connection member for the outflow circuit, and each of the coupling connection sides is provided with a first automatic spring valve and a second automatic spring valve. , an intermediate chamber is provided between the valve seats of the 21-piece valve, and a fixed thick part for an outlet opening to the outside is provided below the intermediate chamber, and the seat member is The upper part of the movable vertical rod is connected to the membrane of the pressure VT section, and the pressure chamber is connected to the inlet coupling. It is characterized by being in direct communication with the connecting member.

The present invention further provides that the vertical surface of the outlet valve υI is hollow, the upper end H1s is always open to the outside, and the τIS is connected to an intermediate speed member fixed to the main body. It is characterized by its ability to close.

The present invention further provides that a splash catch is installed above the seat part 1141 and below the dish-shaped part H fixed under the membrane, and this splash catch is connected to the discharge valve and the upper end of the hollow rod. Each section: Section 4. (It is characterized by acting 4 so as to simultaneously separate them from each other.

The present invention (j) Furthermore, a discharge valve is opened in the lower part of the intermediate cavity.
5. With this structure, the blade part side is inclined so as to create a vortex in the liquid that increases the drainage speed in this intermediate region when the liquid is drained.
Coupled with the effect of the seven air currents formed through the hollow rod, it is possible in an emergency to remove the contaminated liquid contained in the intermediate cavity at a very high speed.

The present invention is based on the history that a plate-shaped part attached to the membrane and the lower lnl-shaped member is fixed to one side of the main body.
The central portion of the seat member communicates with the inlet pressure chamber.

Embodiments of the present invention and other space-time aspects will now be described in detail with reference to the attached FIG. The main body (1) is closed with a cover (2) and is in a secure state. The ends of the flexible liquid-tight membrane are fixed between the hollow body (1) and the cover (2), and the central part or "1"
It's called 1sukejizai. .

The hollow body (1) has a coupling connection member (
4) and a coupling connection 5) for the outflow circuit.

(6) is an intermediate chamber formed in the center of the hollow body (1). The intermediate chamber (6) is coupled by a first automatic valve (7) formed by a fixed external valve (8) that slides the blockage ΣflLJ (9) or its child J by the action of the return spring law. The fixed annular seat (12
) from the lower blade flow coupling connection 44' f5) by the second automatic valve (11) consisting of The two first valves (7) and second valves (11) are in the same direction (in a straight line).
, as shown in (16), (this liquid or m, the coupling (
4) to the outflow coupling (5), the valves (7), (II) are both configured to open 1 under the thrust action of the fluid pressure when there is an IF flow; 11
ing.

i'+iJ The intermediate '=do (6) formed between the valve seats (8) and (12) of the two valves is connected to the outside through a fixed seat (17) thrown at its lower part. It is open[]1.

This seat portion 4:/l' fl force is movable and forces the member (17) into a 1. The closure member (18) is configured to cooperate with a closure base member (18) which can be occluded at the lower end of the vertically movable rod (19).
, while the ligament of the vertically movable rod (19) is connected to the central part of the membrane (3) by means described below. .

The vertical movable rod (19) of the discharge blocking member (1B+) is hollow and is formed along the entire length of the axial hole t20+, and the lower end of the hole 20 is connected to the fixed seat member (]7).
It passes through the center of the pipe, so it is always in communication with the outside air. The upper end of said rod forming a closing member (21) is movable and cooperates with a seat member (22) located in the lower part of the chamber communicating with the axial bore (21). It is composed of

The hollow rods have radial arms 123) and these arms Q; () are mounted below the intermediate floor member - the lower dish-shaped member), thereby controlling the movement of the discharge valve. (
18) and the air inflow blocking part set t21.

The lower part of the intermediate cavity is formed by a blade part 4AI25), which creates a vortex state in the liquid, and from this point, the discharge valve [17+-f181
The rate of drainage of liquid in this area can be increased when the area is opened.

A compression spring (26) is provided on the upper surface of the intermediate instep member, and the upper end of the spring θ6) is in contact with the lower part of the upper dish-shaped member (241).By the action of this spring I26, the discharge valve (
18) is raised to the 1st part (the part of the P member), and the closed base shrine 121) or the upper part of the P part is raised.

11 and 1 + (this, -) square members are fixed to the upper plate-like member through the central hole of the membrane.
is fixedly supported between the dish-shaped members (2th and (271).

The upper plate-shaped member has a 1ζ' plate-shaped seal part Δ (28+, and the seal part side part) cooperates with the seat part temperature provided in the center part of the cover (2) so that it hangs. It is configured,.

(30) is a pressure chamber, which is formed in a part of the upper dish-shaped member 127) above the seat part (29) and inside the cover (2). this! The inlet coupling (31) opens into the second part of the valve (7).
4) is directly connected.

The inflow pressure at the coupling junction side (4) is always
130), regardless of whether the first valve (7) is opened or closed. Also, similarly to the second gf321, the closing part IN'
128+ and the membrane (3) formed in the cover (2).The operation will now be described.

t! of the fluid circuit according to the present invention! When the lli-way device is not in operation, that is, in the stop position, its ramming part side is in the position shown in FIG. 81.

In other words, 0 The first valve (7) and the second valve (11) are closed.

0 discharge valves (17), (18), (21) are +! 'l D
I'm L.

Due to the biasing force of the zero spring (2G), the sealing member (circle) of the dish-shaped part 09) comes into contact with the seat member 09), forming the state If1r.

Even when the disconnection device is in operation between the inflow circuit connecting to the coupling connection member (4) and the outflow circuit connecting to the coupling connection member (5), ) and chamber +30+ are not enough, and the discharge valves (17), (18), (21), (22
), the disconnection device is at the stop position Ift, shown in FIG.

On the other hand, the pressure of the inflowing liquid increases and the arrow (]5 in Fig. 2
), (16) shows that if liquid does not flow in the direction shown in (16) under normal conditions, the following operation occurs.

In the second stage, both valves (7) and (11) remain closed, and due to the increased pressure in chamber 130), the membrane (
The center part of 3) begins to descend, and the seal member (28j or part 1: 'M 1li1511' +29) collar rl
l IPJ Sur.

...Tatachi-ko, 7mer IE force is applied to the entire -L surface of membrane (3), and It! (The central part of 31 rapidly descends and compresses the spring (26), and the blockage +N' +llll+ is closed to its seat member 127) in the closed state.
) come into contact with the seat members (cone), respectively.Thus, the intermediate chamber (6) is in a state where it does not communicate with the outside.

At this time, due to the combination of various springs and the action of surfaces affected by pressure, the first valve (7) opens and a pressure lower than the inflow pressure (15) forms in the intermediate chamber (6). Once the power here is formed, this pressure will cause the second valve (1]) to open or open 1].
aI via the connecting member (5) as shown by the arrow (16)
L body or style, put out.

When the flow stops, valves (7), (11) close 1f.

Due to the different combinations of the springs, the pressure in the intermediate cavity remains lower than the pressure in the connecting member (4). And the discharge valves (18) and 121 are the seat wood 17) and (22).
) stay in position.

On the other hand, when the liquid flow is in the opposite direction fJ, the first
When the effluent liquid begins to flow back into the connecting member (5) as indicated by the arrow (35) in the figure, the following actions occur depending on each case.

[First case] If the outflow pressure increases, the valve (7), fil) closes 5, and the valve (11) prevents the outflow fluid from flowing back into the intermediate cavity section. And if the valve (old) malfunctions,
The outflow pressure is sufficiently formed in the intermediate cavity, #l ri
'J valves (171, (18), (21), and (22) open.Then, the 11j dyeing liquid that has flowed back from the outflow path flows through the discharge valves (17), (IS), 21), and (221). 4jl will be released.

In the second case 1, if the inflow 11 (force drops), the valves (7), (11) close.

M1 person f, I:, the force is smaller than the pressure in the intermediate cavity IS, the spring (26) is bounded by the membrane (317i-, and the valve 121), +22) f171, (1
8) is opened. Next, the liquid contained in the intermediate cavity, which is considered to be contaminated, flows out to the outside via the VAS shrine (1η. In this case, the outside air is passed through the axial hole t20+ of the rod 09). flows in, the outside air enters above the level of the liquid that is being discharged, and the liquid is caused by the vortex generated by the flade member (25);
This outflow takes place at an extremely fast rate, as the amount of water is constantly increasing.

[Third corner stand 1 As shown by the arrow (36) in Fig. 3, if the IJ has a hole in the 1st corner (3), the same pressure will be applied to both sides of the crotch (3). As shown in FIG.
8) and the air intake ports 121) and 122 are both opened. In this case, even if there is a hole in pattern 1 (3), the arrow (1
5), as shown in (16), the liquid rfl+ movement takes place normally. There is thus no risk of the inflow circuit being contaminated by the contaminated outflow circuit (5). The leak can be seen externally due to the leak passing through the seat member (171). Thus, the operator can know that an accident has occurred and the five-person circuit (
4) Repairs can be carried out without the risk of contaminating the equipment.

On the other hand, in the case of Figure 1, if the outflow fluid flows backwards in the direction shown by arrow (A) and a hole is created in the membrane (3), the inflow fluid flows through the membrane (3).
It enters the chamber (6) through the gate and flows out through the seat (19), so the operator can know it.If the second valve (11) is in a liquid layer state, Since this second valve 01) comes into contact with the sole member 128) or the bottom side Q9), the outflow liquid that flows back into the chamber (6) is discharged from the discharge valve (1η, There is a risk that 1qi will be discharged to the outside through the seat member (18) and contaminate the clean liquid in the inflow circuit (4).

The disconnection device for a five-body fluid circuit according to the present invention has various advantages.
The main fj things in L are listed below. .

...Since the membrane (:3) is provided on the side of the XIS, the impurities carried by the fluid are '!'! There is a risk that the A location may become clogged or blocked.

The air intake (CO) formed in the RFI part of the O hollow lot unit can increase the output speed of υ from the intermediate chamber (6).

・If the spring is damaged, the vertical valve (17
1, (18), (21), and (22) are opened and the valves (28) and I29) are closed.
It leaks.

...i9-), if there is a hole in the membrane, there is no risk of liquid flowing back through the membrane in the inflow direction.

Since a spiral is formed by the slanted blade section (cedar 125), the 1,0 discharge valve that can quickly discharge from the intermediate region defined by the intermediate chamber (6) is connected to the inflow valve. Since it is provided at the bottom, the discharge valve (17),
When (18) opens (-), there is a risk that the liquid existing in the intermediate cavity will be sucked.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view of a disconnecting device for a fluid circuit according to the invention in a stopped position, and FIG. 2 is a longitudinal sectional view of a fluid circuit according to the invention in a normal operating position. Figure 3 is an explanatory diagram of the operation of the disconnector in the event of an accident where a hole is formed in the membrane, and Figure 4 is a cross-sectional view taken along the ■-IV: line in Figure 1. be.

Claims (1)

[Scope of Claims] (]) Hollow bodies (consisting of moons, said hollow bodies (1) each having a first automatic spring valve (7) and a second automatic spring valve (11)
An intermediate chamber (6) is provided at the IHj of the two valve seat members.
A fixed seat member 071 for an external open D L discharge port is provided in the lower part of the intermediate chamber (6).
71 is an IJ provided at the lower end of the vertical IJ movement rod (19).
The upper part of the vertically movable rod (19) is connected to the membrane (3), and the upper part of the +at3+ is directly connected to the inlet connection member (4). A one-way -r path device configured to be disposed between an inflow circuit and an outflow circuit. +21 4Jl opening/closing) g capital R+181 vertical rod (I
9) is hollow and its lower end is always open to the outside, and its upper end is movable and is configured to be closed by the seat 4'J' (22+) fixed to the main body (1). A disconnecting device for a fluid circuit according to claim (1).(3) A discharge valve provided between the fixed part of the main body (1) and the lower dish-shaped part The disconnecting device for a fluid circuit according to any one of claims (1) to (2), characterized in that it includes a spring 061 that functions to return the fluid circuit to the open position. (4) The spring (26) is a thick part fixed to the main body (1).
The disconnection device for a fluid circuit according to any one of claims (1) to (3), characterized in that it performs an action to rigidly close the closed portion t/1t211 from t22+. (5) Any of claims (3) to (4), characterized in that the discharge valve (18) and the closing member (21) are connected to the same hollow rod (19) and are opened and closed at the same time. The fluid circuit disconnecting device according to claim 1. (6) The lower part of the tree 1i\([) has a radial arm located at the level of the discharge valve, each arm located at the level of the discharge valve within the intermediate cavity (6) of the body (1). Movable part (18
) is inclined to form a fixed blade member around the drain valves (17), (18), creating a vortex in the liquid that can increase the NI output rate in this intermediate region when the discharge valves (17), (18) are opened. 41. A fluid circuit disconnection device according to any one of claims (1) to (5), characterized in that the disconnection device is configured so as to cause the disconnection device to disconnect. (7) The dish-shaped member t2'7+ membrane (3), which is fixed to the blood, and the annular seal part side of the membrane (3)) is connected to the fixing part 4-, which communicates with the inflow pressure chamber (30). , l C? 91. The fluid circuit disconnection device according to claim 6, characterized in that it is configured to be able to cooperate with the fluid circuit disconnection device 91. (8) If a pressure difference that leads to normal operation occurs between the inflow side (4) and the outflow side (5) because the liquid flows in the directions of arrows (]5) and (16), the discharge spring , 5n joining operation, as well as the operation of each member subjected to different inflow and outflow pressures, (a) The closing member c21) and the discharge valve (18) are in the same position.
moving to close each seat member in a liquid-tight state;
(b) The inflow valve (7) is opened, and FC) The outflow valve 011 is opened. The fluid circuit disconnection device according to claims (1) to (7). (9) Due to the operation of each member subjected to different inflow and outflow pressures, and the combined operation of the JJ1 output spring, (a) If the inflow pressure drops, the closed base t2] +
and a discharge valve (18) on the side of each NM section, (1) is spaced apart from the NM part, and by the inflow of air through the seat member, the discharge speed of the intermediate cavity 1η5 is accelerated; If a leak occurs at the outflow valve (11), the blockage part (1) and the discharge valve (18) will be separated from the respective seat members (22), (171), and the tll dyeing body or the exit valve (17) will be separated from the respective seat members (22), (171). The patent claim is characterized in that when the outflow pressure is relatively large, the /1j dyeing liquid also leaks out through the seat member, so that the leakage is easily carried out. A disconnecting device for a fluid circuit according to any one of ranges (1) to (8). (10) A horizontal membrane (3) located at a higher position than the connecting member (4).
Claim No. 1 is characterized in that the membrane (3) is configured to flow mainly from the inlet side via the connecting member (4), and to eliminate sedimentation due to gravity of particles entering the membrane (3).
) to (9), wherein the seat member of the discharge valve is lower than the inflow valve (7) and horizontally at the lowest end of the intermediate cavity. This patent is characterized in that, because of the provision of the above-mentioned structure, contaminated liquid does not accumulate in the intermediate cavity, and therefore, this contaminated liquid is not sucked into the inlet side through the connecting part assembly (4). Claim No. 1
) to (10).