HU185458B - Membrane valve of accelerating nozzle for flushing systems - Google Patents

Abstract

Diaphragm flushing valve which is actuated manually or electrically and is generally suitable for flushing systems, especially for flushing WC bowls and urinals. The valve is characterised in that air sucked in through an accelerator nozzle accommodated at the outlet opening mixes with the flushing water and the air/water mixture brings about at great speed an efficient, water-saving flushing. The valve actuation is based on the fact that a control chamber is constructed in the valve behind the regulating diaphragm, by which the inlet opening connected to the water mains is blocked, which control chamber is connected to the inlet side via a bypass bore. The diaphragm is pressed against the inlet opening under the mains pressure prevailing in the chamber. When the control chamber is connected to the discharge opening via an open non-return valve, the pressure acting on the diaphragm is reduced, so that the flushing valve opens. With the closure of the non-return valve, the control chamber fills up until the regulating diaphragm blocks the inlet opening again under the increasing liquid pressure and ends the flushing operation. The increase in pressure in the chamber, and therefore the blocking time of the valve, can be adjusted by means of an adjustable throttle member in the bypass bore.

Description

Diaphragm valves are generally known and used. The membrane design is most often used where the opening-closure is to be solved with a control medium (air, oil, water, etc.).

In this case, the membrane and the closure are in contact with each other, so that a force acting on the surface of the membrane displaces the closure. The membrane is also intended to prevent the control medium from entering the controlled medium.

This valve must also have a separate control unit (eg solenoid valve) which ensures that the control fluid is applied to and discharged to the diaphragm, such as that described in 167.982.1. s. Hungarian patent.

Also known is a self-sealing diaphragm valve in which the sealing diaphragm is a punctured design and fluid passing through the diaphragm closes the valve if the liquid cannot leave the space above the diaphragm. In the case of a self-priming tank, the control fluid was drained with a float ball. As the fluid level drops, the slurry opens a valve through which the fluid exits the space above the membrane, so that fluid flow begins. Such a solution can be found in U.S. Patent No. 3,763,681. U.S. Pat.

These systems are not suitable for flushing, only for closing or opening a liquid or gaseous material in a piping system.

In the prior art, several types of flushing valves are known which operate directly from the mains without a tank. These are usually hand-operated valves in a metal housing with precision-machined piston systems and springs.

The plunger has various rubber seals that provide both valve closure and sealing, both during operation and when closed.

Remote controlled automatic valve control eg. electrically into a photocell, with a timer, etc. It happens. Pneumatic systems are also used. A special solution is the system according to German Patent No. 2,518,426, which otherwise can only be used in urine. This actuates the diaphragm to operate the control valve for remotely controlling the flush valve.

The disadvantage of such flushing valves is that surfaces that require otherwise precise machining wear away from impurities in the water, creating deposits on them and thus offering a high degree of failure.

They contain parts that are difficult to repair and cannot be performed at the place of use. .At lower network pressure, they are uncertain that they are performing their function properly. Therefore, they are only allowed to be used in the case of stably pressurized water systems. The fatigue of the locking spring is another source of error.

It is an object of the present invention to provide a flushing valve having a manual, mechanical or electrically operated, automatic return suction damper, where the closing force is formed by the pressure of the fluid being used and is passed through a liquid accelerator and mixed with air.

The design of the valve of the present invention is based, on the one hand, on the recognition that the high-speed aerated mixture provides highly efficient, water-saving flushing due to its high buoyancy and rolling ability. In addition, it is good on the surface, not splashing. On the other hand, the innovative technical solution on which its operation is based. Liquid introduced from the pressure side of the valve above the sealing membrane in the valve presses it against the valve seat due to the force due to surface differences. This closing force is sufficient to prevent fluid flow in the valve. By relieving the pressure, by releasing fluid over the diaphragm, fluid entering the network moves the shut-off membrane out of the valve seat and starts a fluid flow that mixes with the intake air through a pressure nozzle.

Accordingly, the present invention provides an accelerator diaphragm valve for flushing systems, preferably for flushing toilet bowls, urinals, which is configured to have a fluid flow control shut-off valve, a shut-off valve actuating valve, a greater inlet valve outlet, at least one passage bypassing the sealing membrane is a passageway connecting the valve chamber to a lower pressure space and / or other low pressure space of the valve outlet, an opening and closing valve for the connecting passageway, an air intake and fluid flow mixing nozzle.

A preferred embodiment of the valve of the present invention. if you network with the valve chamber! an adjustable reduction element is conveniently located in the connecting passage or conduit for controlling the filling time, i.e. the closing speed. The pressure chamber passage of the valve chamber is connected to the outlet branch of the valve. The manually operated shut-off valve is provided with an auxiliary diaphragm which, on the one hand, prevents the control fluid from being released into the open when open and, on the other hand, facilitates the closing of the valve. The fluid acceleration system used in the outflow section of the valve ensures easy installation. The position of the sealing membrane used prevents suction.

The energy-saving role of water and thus the valve is of great importance, since the amount of fluid flowing in proportion to the time of pressing the manual button. When pressed for a moment, minimum water (0.5 to 1.5 liters) and for 1-2 seconds, the amount of water flowing through the system at the closing time set for the intended use. It is therefore particularly suitable for use in public toilets.

The valve of the present invention does not contain wear parts.

In addition to complying with hygiene requirements, the valve design has very beneficial properties. For example, due to its simplicity, it can also be manufactured from plastic, which allows the use of economical injection molding technology, interchangeable parts.

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Compared to the known valves used for flushing systems, it is very simple, corrosion-resistant and does not require any expert repair, and the acceleration system used allows variable or low pressure application. 5

Another embodiment of the invention, by leaving the accelerator nozzle, is suitable for dispensing any valve medium, whether manually or otherwise, provided that the outlet side is less pressurized than the inlet side. 10

An exemplary embodiment of the valve of the present invention will be described with reference to the accompanying drawing, which is a longitudinal sectional view of the valve.

The body of the valve shown in the figure consists of two parts, the valve seat 12, the top of the valve 9, and the accelerator nozzle 13 and the air intake 11 connected thereto.

The valve body includes a shut-off membrane 2, an actuator 20 consisting of a push-button 14, a shaft 6, a diaphragm 7, a rubber ring 8 and a reducer 10.

The fluid flowing on the discharge side passes through the passage 1 into the valve chamber 4 into the space above the sealing membrane 2, where the pressure pushes the sealing membrane 2 onto the valve seat 3, thereby forming an inlet cross-section. 25 closes.

When the push-button 14 is pushed, the fluid from the space above the closure membrane, i.e. the valve chamber 4, flows through the connection passage 5 to the outlet branch of the valve, the pressure is reduced. 30

At this moment, force is applied to the sealing membrane 2 from the pressure side so that it is displaced and fluid flow begins. However, fluid is still flowing over passage 2 over passage 1,. the pressure of which, on the one hand, acts on the top of the diaphragm 7 and, on the other hand, acts on the rubber ring valve plate 8. As a result, the force applied acts in the closing direction on the 6 axes.

By releasing the push button 14, the force exerts pressure on the rubber ring valve seat 8 to the upper seat 40 of the valve, blocking the passage of fluid through the connecting passage 5. Fluid still flowing in passage 1 pushes the sealing membrane onto the valve seat 3 to close the valve.

In the passage 1, a narrowing element 10 is provided, by means of which the filling of the valve chamber 4 and the closing time of the flushing valve can be adjusted.

There are 13 accelerator nozzles placed in the outflow branch of the flushing valve, which are used both to accelerate the flow of the fluid and to train it! by spraying the liquid on the pipe wall and mixing it with the intake air.

The accelerator nozzle 13 also provides a proper connection of the outgoing pipe section to the valve. 55

The design of the sealing membrane 2 as well as the valve flap 12 ensures that the sealing membrane 2 is subjected to a minimum load when closed and prevents suction. In addition, the sealing membrane 2 has a hemispherical protrusion 60 which, according to our experiments, stabilizes the flow and allows a vibration-free seal

At the moment of opening, the fluid flowing on the outflow side creates a vacuum at the connection passage 5, which allows the fluid to leave the valve stem 4 sufficiently.

In the exemplary embodiment, the closing time of the valve is adjustable, allowing for a wider application. It does not contain any sliding, frictional component, so the impurities in the liquid do not cause wear or leakage, so its operation is reliable.

The valve can also be operated remotely by replacing the push button 4 on the shaft 6 with an electric or mechanical actuator such as an electromagnet, a hydraulic cylinder, etc. which are controlled in known ways

Experiments with the exemplary valve have been shown to work reliably under variable and low pressure conditions. It meets the efficiency requirements and requirements for flushing toilet bowls with 60-70 percent of the flush water used by other designs. The valve will not resonate when closed. does not cause urination. It can be made in any size and can be used in any place where free flow of liquid is ensured.

Claims (4)

Patent claims An accelerating diaphragm valve for flushing systems, preferably for flushing toilets and urinals, characterized in that the flow control valve (2), the valve chamber (4) operating the valve (2), the valve inlet side (4) ) connecting at least one passageway (1) bypassing the closure cuff (2), connecting passageway (5) connecting the valve chamber (4) to the lower outlet space of the valve and / or other lower pressure space and / or other lower pressure space, a flight opening valve plate (8) having an air aspirator and a fluid flow mixing nozzle (13). An accelerator diaphragm valve according to claim 1, characterized in that the sealing tube fixed on the shaft (6) of the valve disk (8) has a diaphragm (7) which facilitates operation of the valve disk (8) and a push button (14) for manual operation. An accelerator diaphragm valve according to claims 1 and 2, characterized in that the shaft (6) of the valve disk (8) is an electric actuator, e.g. electromagnet connected. (08.08.1982) 4. An accelerator diaphragm valve according to any one of claims 1 to 4, characterized in that the sealing membrane (2) has a protrusion (i) and / or a recess (1) relative to the closing plane of the sealing membrane (2) in contact with the valve seat (3). (08.08.1982) 1 figure -3185 458