WO2008047244A2

WO2008047244A2 - Metering multi-venturi

Info

Publication number: WO2008047244A2
Application number: PCT/IB2007/004197
Authority: WO
Inventors: Jesús FRIGOLA REIG
Original assignee: Frigola Reig Jesus
Priority date: 2006-10-18
Filing date: 2007-12-17
Publication date: 2008-04-24
Also published as: WO2008047244A3; ES1064046U; ES1064046Y

Abstract

The invention relates to a multi-venturi comprising multiple parallel tubes (1) which are each provided with a narrow passage (2) communicated with an inner vacuum chamber (3) and side inlets (4) used to meter an adduct into a base liquid flowing through the tube (1). The main inlets (5) of all of the tubes (1) are interconnected in relation to a common supply pipe (6) and the outlets (7) of all of the tubes (1) are interconnected in relation to a common discharge pipe (8). The multi-venturi includes interconnected side inlets (4) used to supply adducts through common supply means.

Description

DESCRIPTION

MULTIVENTURI DOSIFICADOR Sector of the technique The present invention is related to the mixing of products in a dosed manner, by means of the contribution of addition products in determined proportions on a receiving base liquid, proposing a multiple venturi device, which allows simultaneously mixing different Addition products in the necessary proportions on a diluent base liquid.

State of the art

There are currently on the market dosing devices that operate on the Venturi principle, based on the creation of the vacuum that occurs when there is a pressure drop in an interior area of a conduit through which a linear flow of a liquid circulates.

At the point of circulation of the flow where the pressure drop is created, a vacuum is produced that allows a suction, which is used in the venturi devices, to provide the circulating flow with a secondary product through an accessory inlet that flows at said point of pressure change; so that, by regulating the passage through the accessory inlet, a greater or lesser percentage of the secondary product can be obtained with respect to the main flow.

To mix several addition products with a main base liquid, a solution is the realization of successive stages of contribution, by means of corresponding dosers, to provide the different addition products independently, which results in a slow and expensive process, and Furthermore, the mixing of the addition products with the main base liquid is not homogeneous, since it is done individually, so that the base product changes as the addition products are added.

In the Utility Model ES 200003066 a solution is proposed that solves the problem of the mixing of several products by means of a venturi device with multiple accessory entrances to an inner chamber in which the depression is created by means of the circulation of the main base liquid, through the Venturi system mentioned, so that through the different accessory inputs the arrival of as many additional products can be established, which are thus mixed all at once with each other and with the base liquid principal.

With said solution a perfect regulation of the dosage of all the addition products with respect to the main base liquid can be obtained, but nevertheless the conduction through which the main base liquid circulates, is fixed and therefore the resulting mixing flow rate that can be obtained is limited and only allows a level of production in line with the capacity of the passage of the main conduction of the device.

Object of the invention

In accordance with the invention, a venturi device is proposed that solves in a satisfactory way, both the mixing of multiple addition products on a base liquid, and the obtaining of a large production flow, by means of a device that integrates two or more venturi devices in the same functional set.

This device object of the invention consists of two or more elements formed by respective passageways for the circulation of a liquid through them, all the elements connected to a common supply of circulating liquid supply and a common outlet for evacuation of the flow resulting from the sum of the flows from the different elements, while the conduit of each of the elements defines in its interior a depression chamber, in which different secondary conduits of entry of addition products flow.

A device is thus obtained that allows a series of addition products to be mixed simultaneously in a base liquid, multiplying the mixing process by as many times as associated component elements comprising the device, whereby a large mix production can be achieved. flow rate at a high speed, with uniform contribution of the addition products, since all of them are mixed at the same time with the base liquid.

The entries of the addition products can be regulated individually through the opening of the passage of the respective supply lines, whereby the contribution of said products to the base liquid can be adjusted in the desired proportions of each of them, so that the proportions of the different products can be regulated independently before the inlet, to add all of them at the same time to the base liquid, without previously coming into contact with each other.

With this, two or more high concentration products that are incompatible when concentrated, but which are not in dilution percentages, can be mixed in a water base, for example, complex mixtures can be carried out reliably, adopting the proportions that agree, by means of the regulation of the entrances to the dosing device, without risks of accidents by dangerous mixtures of the products used.

Therefore, said multiventuri device object of the invention results in certain advantageous characteristics, acquiring its own life and preferential character for the function to which it is intended.

Description of the figures. Figure 1 schematically shows the longitudinal section of a conventional venturi metering device, with an accessory inlet.

Figure 2 is a cross-sectional view of the device of the previous figure.

Figure 3 is a cross-sectional view of a known venturi dosing device, with multiple accessory inputs.

Figure 4 is a schematic view in longitudinal section of a venturi dosing device according to the invention, in an example with two venturi elements of multiple accessory inputs coupled.

Figure 5 is a cross-sectional view of the device of the previous figure.

Figure 6 is a schematic view in longitudinal section of another example of a device according to the invention, with three venturi elements of multiple accessory inputs coupled.

Figure 7 is a cross-sectional view of the device of Figure previous.

Detailed description of the invention

The object of the invention relates to a venturi dosing device, intended to mix multiple addition products in a diluent base liquid, according to a formation that allows uniform and precise mixtures of the products with a large production flow.

The device starts from a conventional embodiment of formation by means of a tube (1), inside which a narrow passage (2) is determined in correspondence with a chamber (3), as shown in Figure 1, communicating laterally with said chamber (3) ) an accessory input (4), as it represents

Figure 2, or multiple accessory inputs (4), as shown in Figure 3.

In said device, when a liquid circulates through the tube (1), in the narrow passage (2) a pressure drop occurs, which causes in the chamber (3) a depression that produces a suction through the accessory inlets (4 ).

This allows a liquid to circulate through the tube (1), to mix with it addition products by absorbing them through the accessory inlets (4), by the effect of the depression that the circulating liquid creates in the chamber (3 ).

In accordance with the invention (figures 4 to 7) a device consisting of two or more tubes (1) provided with corresponding depression chambers (3) inside and multiple accessory inlets (4) in each of them until the corresponding depression chambers (3), said tubes (1) being established with their respective main inputs (5) connected to a common supply conduit (6), and with their respective outputs (7) also connected to a common conduit (8) of evacuation.

This results in a device that makes it possible to circulate through all the tubes (1), by means of common feeding of said liquid through the conduit (6), and through the accessory inlets (4) the feeds of so many other addition products are connected, with Which is the depression that creates the circulation of the main liquid in the chambers (3) of the different tubes (1), makes the different addition products through the corresponding accessory entrances (4) to each of the chambers (3) through the corresponding accessory entrances (4), so that in each tube (1) a simultaneous mixture of the main liquid with the different addition products results, leaving all the mixtures together, in a common flow, through the evacuation duct (8).

In this way, a mixture of the main liquid is obtained simultaneously with all the addition products, allowing multiple products to be mixed quickly accurately in the desired proportions and without the addition products mixing directly with each other at the original concentrations that could cause dangerous reactions, resulting in a high speed of production of the mixture, since the process is carried out independently in each of the tubes (1), adding the result of all of them in the joint exit through the evacuation duct (8).

Therefore, depending on the number of process tubes (1) that are arranged coupled, a production flow of the greater or lesser mixture can be had, as can be seen from the examples shown, which are not limiting, since The number of tubes (1) coupled is therefore to be desired.

The accessory inlets (4) of the different tubes (1), can be independently connected to the feeds of the addition products, but preferably a connection between the accessory inlets (4) of the different tubes (1) is provided, to establish common connections to the feeds of the addition products, so that the disposition for use is easier to make.

In any case, the supply of the addition products is regulated by adjusting the passage of the conduits to the respective accessory inlets (4), said adjustment being determined before shifting to the accessory inlets (4) of the different tubes (1). ), when they are connected to each other, with which an equivalent distribution of the products of addition to the multiple tubes (1) is obtained, obtaining similar mixtures in all of them and therefore a uniform and reliable mixture in the resulting common flow that exits through the evacuation duct (8).

Claims

1 - Multiventuri dosing, of the type that inside a tube (1), determines a narrow passage (2) in correspondence with a chamber (3), of depression, provided with accessory lateral entrances (4), for the mixture of addition products that are suctioned through the accessory inlets (4), with a base liquid circulating through the tube (1), characterized in that it comprises an arrangement of multiple tubes (1) each provided with an inner chamber (3) of depression and accessory side entrances in relation thereto, the main entrances (5) of all the pipes (1) connected to each other in relation to a common supply conduit (6), and the outlets (7) of all the tubes (1) connected to each other in relation to a common duct (8) for evacuation.

2 - Multiventuri dosing, according to the first claim, characterized in that the accessory side entrances (4) of the different tubes (1) are provided with connection between them, for the supply of the addition products by common feeds to the different tubes (one).

3 - Multiventuri dosing, according to the first and second claim, characterized in that in the feed lines of the addition products a regulation of the passage is established before the derivation of the respective feeds to the accessory inputs (4) of the different tubes (1) that are connected to each other.