ES1323087U - Watertight valve for drainage pipes - Google Patents

Abstract

A watertight valve for drainage pipes, characterized in that it is made up of a vertical cylindrical tubular body (1) in which a cylindrical main chamber (5) is defined, closed at the top by a cover (2), and which communicates with a horizontal tubular appendage (6) for coupling an inlet pipe (8) through which the drainage water is received, with the special feature that a floating sphere (9) of smaller diameter than the diameter of said chamber plays vertically inside the main chamber (5), an internal throttling being established in the lower area of the same which defines a seat (10) for the floating sphere (9) in the absence of water flow or drop in level, determining a means of automatic sealing of the valve outlet as a barrier against gases, bad odors or animals. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Watertight valve for drain pipes

TECHNICAL SECTOR

The present invention relates to a watertight valve for sewer drain pipes.

The object of the invention is to provide a device that, when installed in a drain pipe, prevents the escape of bad odors, harmful gases, or even animals such as rats or insects through said pipe when water is not flowing through it or the level drops.

The device of the invention additionally offers a self-cleaning character and the ability to drain accumulated waste within it.

BACKGROUND OF THE INVENTION

In the practical application of the invention, public sewer circuits lack elements such as siphon traps or similar devices that prevent the escape of odors as well as the access of animals when water does not flow through said conduits.

In any case, the device of the invention, although it has a similar function to that which a siphon trap could offer, has a very different structure, much simpler and easier to install, being applicable both in sewer pipes and bathrooms and sinks.

EXPLANATION OF THE INVENTION

The non-return valve for drain pipes that is recommended fully and satisfactorily solves the aforementioned problem, based on a simple but highly effective solution, preventing the escape of bad odors, gases, as well as the circulation of animals such as rats or insects through the device.

To this end, and more specifically, the valve of the invention is made up of a vertical cylindrical tubular body, closed at the top by an access cover, which includes a radial and horizontal tubular appendage, the latter defining the connection end of the water inlet pipe, while the lower end of the tubular body is connected to the outlet or receiving conduit of the water to be drained.

Well, in accordance with the essence of the invention, it has been provided that within the vertical cylindrical tubular body there is a floating sphere, which in an inoperative situation, that is, when water does not flow through the valve or the level drops, rests by its own weight on an internal perimeter narrowing or step provided in correspondence with the lower outlet of the valve.

This causes the sphere to block the valve outlet, thus preventing bad smells or harmful gases from passing through the valve and escaping to the outside.

Similarly, this element acts as a barrier to animals such as rats or insects.

Based on this structure, when water enters the valve to drain, it enters the main chamber of the valve where the floating sphere is located, flooding it and causing the sphere to float, moving upwards to the upper end of the main body of the valve, where the aforementioned plug is located, which allows its assembly, as well as removing solids that may have become stuck in the valve.

This causes the valve outlet to be released, allowing water to flow through the body so that at the exact moment the water flow stops and the water level drops, the floating sphere will automatically close the valve body outlet again, preventing the flow of bad smells or animals.

The floating sphere will not only move vertically during intermittent water flows, but will also cause it to rotate, which allows it to exert some friction against the internal walls of the chamber in which it plays, helping to clean the device.

Optionally, the valve could include a grid corresponding to its outlet, which prevents the passage of solids through it that could obstruct the pipes, solids which, as previously mentioned, could be removed through the top cover of the valve, after disassembling it and momentarily removing the floating sphere.

BRIEF DESCRIPTION OF THE DRAWINGS

To complement the description that follows and to aid in a better understanding of the characteristics of the invention, according to a preferred embodiment thereof, a set of drawings is included as an integral part of said description, in which, for illustrative and non-limiting purposes, the following has been represented:

Figure 1 shows a perspective view of a watertight valve for drain pipes made in accordance with the object of the present invention.

Figure 2 shows a front elevation view of the valve of the invention.

Figure 3 shows a side elevation view of the valve of the invention

Figure 4 shows a cross-sectional view of the device coupled to two inlet and outlet drain pipes, in an inoperative state, i.e., in the absence of water flow or a drop in the water level.

Figure 5 shows, finally, a view similar to that of Figure 4, but corresponding to the moment when the water flows through the valve.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the figures described, it can be observed how the valve of the invention is made up of a vertical cylindrical tubular body (1) that includes a top closing cap (2), as well as a stepped recess (3) at its lower end, for coupling the corresponding wastewater outlet pipe (4).

The vertical cylindrical tubular body (1) defines a cylindrical main chamber (5), which communicates radially with a horizontal tubular appendage (6) in which a second stepped recess (7) is established for tight coupling of an inlet pipe (8) through which the wastewater is received.

According to figures 4 and 5, within the main chamber (5) there is a floating sphere (9) with a diameter slightly smaller than the diameter of said chamber, establishing in the lower area of the same an internal constriction that defines a seat (10) for the floating sphere (9) when the flow of water ceases or the level drops, as shown in figure 4, obstructing the valve entrance and thus preventing the passage of bad odors and animals through the valve.

Simultaneously, and according to figure 5, when water flows through the inlet pipe (8) it enters the main chamber (5) causing the floating sphere (9) to move vertically due to its own buoyancy, which causes the valve outlet to be unblocked, allowing water to flow through it.

To prevent the floating sphere (9) from sliding along the horizontal side arm of the valve, a stop (11), clearly visible in Figure 2, is provided on this horizontal tubular arm or appendage (6). This stop ensures that the sphere can only move within the main chamber (5). Obviously, this element would not be necessary if the internal diameter of this arm is smaller than the diameter of the floating sphere (9).

Optionally, a screen (12) could be installed at the valve inlet to prevent the passage of solids, which, as previously mentioned, could be removed after removing the cover (2) and the floating sphere (9). This option is only available when the device is used in sewer systems and may include an anchor for its installation.

Claims (1)

1.- Watertight valve for drainage pipes, characterized in that it is constituted from a vertical cylindrical tubular body (1) in which a main cylindrical chamber (5) is defined, closed at the top by a lid (2), and which communicates with a horizontal tubular appendage (6) for coupling an inlet pipe (8) through which the drainage water is received, with the special feature that in the main chamber (5) there is a vertically moving floating sphere (9) of smaller diameter than the diameter of said chamber, establishing in the lower area of the same an internal constriction that defines a seat (10) for the floating sphere (9) in the absence of water flow or level drop, determining a means of automatic sealing of the valve outlet as a barrier against gases, bad odors or animals. 2§.- Watertight valve for drain pipes, according to claim 1§, wherein the horizontal tubular appendage (6) has a stop (11) for retaining the floating sphere (9). 3§.- Watertight valve for drain pipes, according to claim 1§, wherein a grid (12) is installed in the valve, determining a filtering medium for solids.