JPS588885A - Float valve - Google Patents

Abstract

PURPOSE:To enable a valve to be opened and closed without being affected by pressure difference between the upstream side and downstream side of the valve by providing a flow hole in opposed walls at the lower end of a piston to make the flow hole communicate to an exhaust pipe. CONSTITUTION:In opening a valve, a piston 7 is drawn up by buoyancy of a float 10 so that a flow path 8 communicates to an exhaust pipe 6 and fluid flows out of high pressure side to low pressure one. On the contrary when the valve is closed, it is closed by the weight of the float 10. Thus, by the vertical movement of the piston 7 is opened and closed the valve without being affected by the differential pressure between the upstream side and downstream side of the valve.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a float valve, and particularly relates to a 7m-F valve that can open and close the valve even when the pressure on the upstream and downstream sides of the valve is extremely hot. Generally, when the pressure on the upstream side of the valve is high and the pressure on the downstream side is low, the valve body is attracted to the layered stage due to the pressure, and the opening and closing of the valve is 1 distance.・Opening and closing of the ζO valve Ifo valves are sometimes used in high-pressure piping systems, as shown in Figure 1 II and #l [lK]. Beaten and 14I @
For irrigation ponds O, water holes a, etc., it is not possible to use the closing valve 110, but the valve l that closes the water hole 3 shown in the diagram is used. Water pressure acts on the CO valve element IK, and a great deal of force is required to raise the valve stem by four degrees and open it.

In addition, a 7m valve is used for the self-booting valve that automatically adjusts the water level when the water level rises, but there is no pressure between the upstream and downstream sides of the valve. Due to IIEEE, the valve body was covered with valve dust, and 711-)0? I
OK to operate by force.

There will be a difficult technical battle on this stage.

The present invention has been made in view of the above-mentioned difficulties, and includes:
The purpose is to provide a round float valve that has been modified so that the valve can be easily opened and closed without being affected by the pressure of 11KWt on the upstream and downstream sides of the valve.

The gist is that a discharge pipe perpendicular to the longitudinal direction is penetrated and integrally connected to the lower part of the valve casing with at least one end open, and a through hole is bored in the discharge pipe substantially concentric with the O axis of the valve casing. A hollow cylindrical piston is inserted into the through hole, and the seat surface of the valve is formed between the outer shoulder surface of the hollow piston and the FIIWJ inside the through hole, and the opposing layer at the lower end of the piston is separated. In addition to notching and providing a communication hole, there is a 111m
There is a float 4IPK whose special feature is to connect the flow hole and the discharge pipe by moving the piston upward by the buoyancy of L*711-). In Figure 8, which explains the present invention by way of example, b is a valve casing with an open upper end and a sealed lower end, through which a discharge pipe penetrates perpendicularly to the longitudinal direction and is integrated. It is joined by cylindrical welding. A through hole is bored in the discharge pipe 6 approximately parallel to the axis of the valve casing, and a hollow cylindrical piston 7 is inserted into the through hole.
1111 the valve O seal I with the i box. Reference numeral 8 has a communication hole, which is round and has a notch opposite to the lower aperture of the hollow cylindrical screw 70.

Reference numeral 18 is a guide key that is housed in the valve casing 5 and is connected to the nine floats 100.
In the case of the example, the drain pipe 60 is closed on one side and the drainage direction is O, and the valve is closed and the water is drained with a nine-shaped mackerel.
A 1 m long screw is inserted into the discharge pipe, and the positional relationship between the flow hole 8 and the discharge pipe and the discharge direction is regulated so as not to be pressed against the through hole.

In other words, the relationship in which the flow holes are located is maintained so that the water flowing into the discharge pipe 6 also flows into the flow holes S of the screws 1 and 2 with respect to the direction of discharge water from the discharge pipe 6. I'm doing it.
It is O. In addition, 111L and 13 are Guide Keyaki 1@OIm
It is a spring roll guide member, and as shown in FIGS. 4 and 5, it serves to guide the guide zelkova 18, thereby restraining the rotation of the piston. For example, it is used as a foot valve installed in the middle of a piping system, and automatically directs the proportional flow rate from the high pressure side to the low pressure side 1 as shown by the arrow. Suitable for flushing.

Figure 6 is an example of another example, for example, as shown in Figure 8, it is installed at the outlet at the bottom of the water tank 1lIO, and the flow rate is 1G.
' is sometimes used connected to the font by a chain or rope 3s, as in the example shown in Kirou 11,
Flow) Instead of closing the valve with its own weight of 1G, the valve is closed by the nine springs 16 attached to the valve, and the nine springs are used to close the valve.

That is, the spring holder 18 and the piston 7 are connected to the round 7 langes ss and 0111 via the spring 15, and the spring IIS is held by the adjustment nut 19 fitted to the spring holder 18Km, and 16 is the valve casing. Multiple IK holes, one with 7 lunges for sleeping,
sO is a head material with 7 flanges for the sprunder presser foot.

Next, in Figure 1, open both ends of the discharge pipe, and let the wastewater flow out to both 11 and 11. , it can be in any position, and there is no membership fee that restricts the position of the idea.
s4B collects wastewater from the discharge pipe/kamono, and 70'FalK
The installation should be such that the water is discharged from the ninth drainage hole 8B, and the adoption or rejection of the water collection device should be determined depending on the usage.

When the bottle and valve are closed, fluid is accumulated in the hollow cocoon-shaped O piston 7 through the inside of the valve casing b and the communication hole 8, and the pressure on the upstream side of the valve is created as the internal pressure of the piston 10.
The piston 1 is moved to the discharge pipe 6 by the high pressure side and low pressure wAO armor pressure.
The stone was placed at rest on the surface of the rock without being touched or pressed into the nine through holes.

When the valve is closed from this closed state, the piston is pulled up by the buoyancy of the flow) 10 or tilG' (1111111)0, the flow hole 8 and the discharge pipe 6 are brought into communication, and the high pressure side OWA Because it flows out from the body to the low pressure side.

After this outflow, the fluid flows in from both sides through the communication hole S provided on the opposite side of the hollow cylindrical piston arm.On the other hand, when the valve closes, in the case of the eighth example, , two-
) 100 The body is closed by its own weight, and in the case of lllll6 figure and happiness (goods), by the spring 1iK.

In this case, due to the round-bay through hole IK provided opposite to the hollow cylindrical piston 10, the piston is adsorbed to the seat (Ii9) and closed without being pressed.

As described above, according to the present invention @11@, a through hole is bored in the discharge pipe, a hollow cylindrical piston is inserted into this through hole, and a flow hole is provided in the lower end of the piston 111. By moving the piston up and down, each communication hole and the discharge pipe are communicated with each other, so that the differential pressure between the upstream and downstream sides of the valve is maintained regardless of whether the valve is closed or closed. It is possible to obtain a float valve that can be opened and closed with a small force without being influenced at all, and it can be used very widely as a control valve and as an opening/closing valve for drains in water tanks and irrigation ponds. It is an extremely significant invention in the noodle industry, such as the

[Brief explanation of the drawing]

Figure 81 and ml! 3 is an explanatory diagram showing a conventional O-valve O-adsorbed horse mackerel, and the sth figure is a vertical cross-sectional view showing an example of the present invention-O-Ii m.
4EFim8f! At) An arrow view along X-XeliK, Figure 5 is a broken explanatory diagram of the main part showing the nine states of the valve of the S figure, Figure 6 is a *m front view showing another example, FIG. 1 is a vertical front view showing another example of a barb cage, and the eighth decoy is the barb case model WsII of the valve shown in FIGS. 6 and 1. i・・・・・・・・・Bentursing S −−−−−−
−Discharge pipe M・・・・−・Piston S・・・・−・
・・Flow hole 9・・・・Sheet image 10% 1G
'----1...foot 11% 13...
・・・Guide member l$・・・・・・Guide dedication
l・・・・・・・・・Flower hole l@・・・・・・・・・
・Sgelinda presser 19・・・・・・Adjusting nut 30・・・・・・Spring presser 7 Member with flange z8・・・・・・Flange $3m $4rJ $5/FJ

Claims (1)

[Scope of Claims] A discharge pipe perpendicular to the longitudinal direction is integrally connected to the lower part of the valve casing with at least one end open, and the discharge pipe has a through hole substantially concentric with the O axis of the valve casing. a hollow cylindrical screw hole is inserted into the through hole, and a seat box of the valve is carved between the outside lIm of the piston and the shoulder surface inside the through hole;
That's it. By notching the lower end mow of the piston to allow the flow hole to flow, and moving the piston upward by the buoyancy of the upper float, the flow hole and the discharge pipe can be communicated with each other. 7 m-) valve.