ES1065004U - Drainage valve for sanitary water faucets (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Drain valve for sanitary water taps, of the type that are realized in a unidirectional valve provided with a shutter that tends to the closing situation due to the pressure existing at the outlet of the tap, when it is open, and which in turn automatically tends to the opening situation, by effect of a spring, when said pressure stops closing the tap, characterized in that the aforementioned obturator materializes in a hollow cylinder and open at its ends, which is immovably fixed between the two constituent parts of the valve body and having at its end corresponding to the tap, a grid on which rests a second spring or spring, established between said grid and a proper shutter, capable of axial displacement within said cylinder and that with the collaboration of a sealing gasket establishes closing on said cylinder when there is water pressure at the exit of the gr if, while this second spring is placed against position, the conventional spring which also acts on the obturator proper from the outlet side of the valve, this spring presents a greater tension than the opposing spring located in the valve inlet. (Machine-translation by Google Translate, not legally binding)

Description

Water tap drain valve sanitary

Object of the invention

The present invention relates to a valve drainage, specially designed to be implanted in a tap of sanitary water, in order to achieve automatic emptying of the section of pipe between said tap and the exit point of water, when the tap is closed.

The valve is therefore of special application in showers and other practical cases in which normally and at closing the tap keeps a certain amount of water between the tap and shower outlet.

The object of the invention is to empty said section of pipeline to avoid sanitary problems, such as Legionella proliferation when water is in contact with the environmental oxygen

Background of the invention

As is known, legionella develops in warm and humid environments, constituting an aerobic bacteria, which as such requires the presence of air for its developing.

Obviously domestic and similar facilities of sanitary water are suitable for the development of these bacteria, when it exists, as is the case in the case of showers, a section of pipe that after the installation is used full of water, usually hot and in contact with the atmosphere through the shower exit itself.

Obviously this problem is also solved by emptying said section of pipe in contact with the air, through a non-return valve that keep closed when the tap is open and it opens automatically when said tap is closed, with the consequent Download your content.

In this sense valves are known unidirectional ball, based on a cylindrical body with two sectors of different diameter, among which a seat joint for said ball, which rests on a spring or spring that tends to keep the valve open, valve which closes when there is pressure at the outlet of the tap, that is When it is open.

This type of unidirectional valves, although they basically fulfill the function for which they have been planned, present a series of problems that focus primarily on the following aspects.
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Before a water hammer or any other similar effect, the valve Unidirectional can be opened while the tap is open, which is clearly undesirable.

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The discharge of the pipe section occurs with direct and free output of the unidirectional valve itself, which limits the faucet positioning, since this must be located in the breast of a bathtub or a shower tray, to collect water from unloading, not allowing its mounting on any other place in the that there is no collector under it.

Description of the invention

The drain valve that the invention proposes to solve the problem fully satisfactorily previously exposed, in the different aspects commented.

For this and more specifically, said valve it is constituted, like any conventional valve of this type, through a body structured in two inter-coupling parts by means of a thread, to allow accommodation inside the shutter, but with the particularity that said shutter is it materializes in a fixed cylinder, which is immobilized in the assembly between the two body parts and sealed with respect to the latter by means of an O-ring, said cylinder being hollow, provided at its access end for the drainage water of a grid and open at its other end, housing a piston on which two opposing springs act, so that one of them presses the shutter in the direction of closing and the another in the sense of openness, the tension of the latter, which ensures valve opening in the absence of pressure inside the tap, while the other spring maintains the valve closure situation in abnormal conditions such as reflux situations or water hammer such as previously said.

The shutter itself will be equipped with the inescapable gasket and in the center of the grid establishes an axial bushing in guiding functions for a rod shutter extension.

According to another of the characteristics of the invention the valvular body, by its free limb, is finished off in a threaded sector with size and type of thread suitable to receive to a conventional hose, and an axial neck in turn properly sized to fit a macaroni, so that by means of these accessories the water evacuated from the pipe section that it exceeds the tap, it can be channeled to any place of drain, leaving the positioning area of the  tap, which can be anyone.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows, according to an elevation view side, a drain valve for sanitary water taps performed in accordance with the object of the present invention.

Figure 2.- Shows the valve of the figure previous according to a diametral section, figure in which it has schematically represented the shutter assembly.

Figure 3.- Shows, finally, a section diametral and in detail of said shutter.

Preferred Embodiment of the Invention

In view of the figures outlined you can Observe how the drain valve proposed by the invention is constituted from a hollow body (1), opened by its ends, in one of which a threaded neck (2) is placed for coupling to the tap, while at the other end it incorporates a second threaded neck (3) formally and dimensionally suitable for receive the connector of a conventional hose used in domestic and similar sanitary facilities, and coaxially with it a neck (4) provided in turn for the coupling of a macaroni, so that any of these elements, hose or macaroni, allow to drain the drainage water to any drain point chosen.

The body (1) is structured by two pieces (5) and (6), inter-coupled coaxially by sectors threaded and complementary (7), defining between both pieces (5-6) a camera occupied by a shutter group (8), camera communicated with the outside through holes axial (9) and (10) of these pieces (5) and (6), the hole being (9) of the piece (5) equipped with an intermediate stepping on which supports a spring (10), which will be discussed later.

The shutter (8), shown in detail in the Figure 3, is embodied in a hollow cylinder that remains immobilized within the chamber defined between the pieces (5) and (6), and sealed with respect to the piece (6) that contains it with the collaboration of a seal (12).

This cylinder (11) is open at its end outlet (13) for water and presents at its other end a grid (14) based on radial arms extending between a axial bushing (15) and cylinder (11), constituting said bushing (15) a guide for a rod (16) belonging to a shutter itself (17), capable of adopting both positions shown in figure (3) and capable of establishing a tight closing situation with the collaboration of a board of tightness (18), said shutter (17) tending to the situation of opening by effect of the spring (10) mentioned above, while which towards the closing situation tends towards the existence of pressure in the tap, specifically at the exit of the tap, and by effect of a second spring (19) that relates the grid (14) with the shutter (17).

It is achieved in this way, according to the Objectives of the invention, an automatic opening of the valve in absence of pressure at the outlet of the tap, an automatic closing of said valve when the tap is open, and the impossibility of accidental opening of the valve with the tap open when produces a reflux situation, a water hammer, etc., at the same time that the valve allows channeling the discharge of the pipe section that relates the faucet to the shower head or outlet that is treat, using a conventional hose or macaroni.

Claims (3)

1. Drain valve for sanitary water taps, of the type that materialize in a unidirectional valve provided with a shutter that tends to close due to the pressure existing at the outlet of the tap, when it is open, and which in turn automatically tends to the opening situation, as a result of a spring, when said pressure ceases by closing the tap, characterized in that said shutter materializes in a hollow cylinder and open at its ends, which is immovably fixed between the two constituent parts of the valve body and having at its end corresponding to the tap, a grid on which a second spring or spring rests, established between said grid and a shutter itself, capable of axial displacement within said cylinder and that with the collaboration of a sealing gasket it establishes closure on said cylinder when there is water pressure at the outlet of the tap, while in the opposite position to this second spring, the conventional spring which also acts on the plug itself from the outlet side of the valve is placed, this spring has a higher tension than the antagonist spring located in the valve inlet. 2. Drainage valve for sanitary water taps, according to claim 1, characterized in that the grid located at one of the ends of the shutter cylinder incorporates an axial neck, on which the corresponding spring is mounted and on which a carriage rod plays to the shutter itself. 3. Drainage valve for sanitary water taps, according to previous claims, characterized in that the valve body, which is finished off by its tap adaptation end on a threaded neck, and incorporates at the other end two successive necks, a first threaded neck for coupling a conventional hose, and a second neck, considerably narrower, for coupling a macaroni.