ES1066915U - Microfilter for draining pipes of sand filters (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Microfilter for drainage pipes of sand filters essentially characterized by having two pieces, one in the form of a hemisphere and the other in the form of a base with a small tube, which can be coupled together. (Machine-translation by Google Translate, not legally binding)

Description

Microfilter for drainage pipes of sand filters

This utility model refers to a device that prevents the passage of sand, or filtering materials of small diameter, inside the drainage pipes of the sand filters

Filters for upstream waters or descending are often filled with sand or materials Filters of very small diameters. Therefore the tubes drains located under this filter material must have of any protection that prevents the passage of this fine material to its interior, particularly during the draining or emptying process of those filters.

Generally, draining pipes form a kind of grill that occupies the entire surface of the filter. He objective is to achieve a good distribution of water or air, or a uniform drain on the entire filter surface.

For various reasons, the holes that allow water collection by these draining pipes sometimes have a diameter greater than the diameters of the bed particles filter. This implies that fine particles penetrate with ease inside the pipes, especially during the process of drainage, thus obstructing the system.

To avoid this problem is used, in some cases, a layer of gravel that covers the draining pipes and that It acts as a filter barrier around them. This solution, however, it is not always viable since, among others drawbacks, the gravel bed occupies a certain volume that does not it is always available, in particular, in the filters little ones.

It is possible to say that it has not been achieved until now a design that satisfactorily prevents the entry of fine sands in the drain pipes of the filters.

The design of this Utility Model consists of in a device formed by two pieces coupled together. A It has a micro-grooved hemisphere shape, while that the other consists of a circular base, on which it engages the hemisphere and with a tube in its lower part. Said tube It is designed so that it can be inserted and coupled directly to the drain pipe, through a hole in the wall of said draining pipe. The device is thus fixed as a microfilter for each hole in the drain pipe.

The micro-grooved hemisphere It makes the filter effect for fine sand particles. For his part, the base on which said hemisphere is coupled has a hole in the center whose diameter will depend on the flow rate You want to let it pass through the microfilter.

The base tube is inserted into a hole of the draining pipe and is fixed inside it and through a "clip" type coupling to the pipe walls. This shape, the drain pipe hole is protected against the entrance of fine sands.

This device also allows the flow of water and air in reverse, that is, from the inside out of draining pipes.

To better understand the scope of the invention, the attached drawings are presented in which materialized a preferred design of the same given by way of example and without limitation.

Figure 1 presents two views in three dimensions of the filter hemisphere where (1) is the hemisphere filter; (2) are the filtration microranuras; (3) the camera interior of the hemisphere; (4) the support base of the hemisphere and (5) the insertion couplings to the base piece type "clip".

Figure 2 presents two views in three dimensions of the microfilter base where (1) is the base of the microfilter that has in its upper part inserts for the coupling of the filter hemisphere and in its lower part adopts a curvature that allows its adaptation to the pipe surface draining (2) are the insertion points of the type couplings "clip" of the hemisphere; (3) is the hole for the passage of water to the drain pipe; and (4) the insertion tube with a highlight that allows the "clip" type coupling with the wall of the draining pipes

Figure 3 presents a view in three Microfilter dimensions complete with both parts attached each other where: (1) is the filter hemisphere; (2) the micro-slots of the hemisphere; (3) the basis of hemisphere support; (4) "clip" type couplings between the hemisphere and base and (5) the tube with protrusion type "clip"

Figure 4 presents a perspective in three dimensions of a series of microfilters inserted in a pipe drainage where: (1) microfilters; (2) drain pipe; (3) tubes inserted with the "clip" system and viewed from the inside of the draining tube.

The operation of the device object of this invention is described below.

For the flow from outside to inside the drainage pipe: water crosses the surface of the hemisphere through the micro-slots, then goes on to the inner chamber of the hemisphere and finally penetrates the drain pipe through the hole in the microfilter base and of the insertion tube.

In the case of water or air flow, indistinctly, from inside the draining pipe to the outside, it implies that the flow crosses first the insertion tube, then the base hole, then passes to the chamber of the hemisphere and through The last one comes out equally through all the micro-slots of the semies-
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Within the essence of the invention it is possible to variant of detail, also protected, and so may vary characteristics of the different heights, the adaptation of the base from the microfilter to a flat surface, shape and diameter of the parts and fittings, size and location of micro-grooves as well as the base hole, type  of material and, of course, any of the dimensions, colors and materials with which it is made.

Claims (5)

1. Microfilter for the drainage pipes of the sand filters.- essentially characterized by having two pieces, one in the form of a hemisphere and the other in the form of a base with a tube, attachable together. 2. Microfilter for the drainage pipes of the sand filters.- characterized according to 1st claim because the hemisphere has a series of radial micro-slots, as well as a series of "clip" type couplings in the lower part thereof. 3. Microfilter for the drainage pipes of the sand filters. - characterized according to 1st and 2nd claim for having in the upper part of the hole base for the insertion of "clip" type couplings. 4. Microfilter for the drainage pipes of the sand filters.- characterized according to 1st, 2nd and 3rd claims because the base has a hole in the center. 5. Microfilter for the drainage pipes of the sand filters.- characterized according to 1st, 2nd, 3rd and 4th claims, for having at the bottom of the base of a tube with a design that allows the coupling type "clip" to a hole in the wall of the draining pipe.