RU217761U1 - Vacuum Filtration Device - Google Patents

Abstract

The device refers to the means of filtering liquids, in particular water samples before analysis by ion chromatography. The required technical result, which consists in improving the quality of filtration, is achieved in a device that is a hollow vessel with a lid and a branch pipe made in the side wall for connection with air pumping means, as well as a funnel installed in the lid, made with the possibility of placing a filter element in it and supplying liquid to it for filtration, while at the bottom of the vessel there is a holder made with the possibility of changing and installing a container for the filtered liquid coming from the funnel, which is replaceable. 6 w.p. f-ly, 5 ill.

Description

Field of technology to which the utility model belongs

The device refers to the means of filtering liquids, in particular, water samples before analysis by ion chromatography.

State of the art

A device is known [RU 2675907, C2, B01D 29/00, 12/25/2018], which contains a filter device in the filter holder, a receiver, in which a water tank is used to accumulate the filtered liquid, and pumps - centrifugal and water jet, the water level in the tank is set by the location of the drain hole on the tank wall, a series connection of the centrifugal and water jet pumps is used to create a vacuum, while the centrifugal pump is located below, and the water jet pump is located above the liquid level in the tank, the liquid is drained from the water jet pump into the tank, the drain tube of the filtering device is connected to the water jet pump.

This technical solution has a relatively high complexity.

Closest to the proposed one is the vacuum laboratory installation Ruchey-1 [https://5drops.ru/catalog/samogonov-rf/pivovarenie_samogo-nov/filtrovalnye_ustanovki/vakuumnaya_ustanovka_dlya_filtrovaniya_ruchey_1], which is a hollow vessel with a branch pipe in the side wall, made with the possibility of connection with air pumping means, as well as a funnel with a filter element installed in the upper part, made with the possibility of supplying a liquid medium for filtration.

The disadvantage of the closest technical solution is its relatively low versatility, which does not allow it to be used repeatedly without additional complete washing of the vessel if it is necessary to obtain a filtrate without impurities that may remain on the walls of the vessel after the previous filtration. This situation is typical for precision studies, such as ion chromatography. However, this technical solution does not allow filtering without eliminating the ingress of impurities into the filtered medium from the previous filtration, which causes its relatively low filtration quality. In addition, in studies, the volume of starting material may be limited to small doses, which causes problems in collecting the filtered material.

The objective of the utility model is to develop a universal device for multiple use, which provides filtration of small volume samples, as well as higher filtration quality and higher productivity due, for example, to eliminating the need to flush the vessel when obtaining a filtrate without impurities that can remain on the walls of the vessel after previous filtering.

The required technical result is to improve the quality of filtration.

Disclosure of the essence of the utility model

The problem is solved, and the required technical result is achieved by the fact that in the device, which is a hollow vessel with a lid and a branch pipe made in the side wall for connection with air pumping means, as well as a funnel installed in the lid, made with the possibility of installing a filter element in it and supplying liquid for filtration into it, according to the utility model, a holder installed at the bottom of the vessel is inserted, made with the possibility of changing and installing a container for the filtered liquid coming from the funnel, which is replaceable.

In addition, the required technical result is achieved by the fact that the hollow vessel is made in the form of a cylinder.

In addition, the required technical result is achieved by the fact that the lid is made with the possibility of a threaded connection with a hollow vessel.

In addition, the required technical result is achieved by the fact that the funnel is made with the possibility of a threaded connection with the lid.

In addition, the required technical result is achieved by the fact that the hollow vessel in the form of a cylinder is made with a diameter of 90 mm and a height of 93 mm.

In addition, the required technical result is achieved by the fact that the holder for installing and holding the container for the filtered liquid is made in the form of an insert on the bottom of the hollow vessel with a hollow ledge for installing the container for the filtered liquid.

In addition, the required technical result is achieved by the fact that the holder for installing and holding the filtered liquid container is provided with two handles for installing and removing the holder from the hollow vessel.

Brief description of the drawings

The drawing shows a vacuum filtration device with a container for filtered liquid:

in fig. 1 - vacuum filtration device in section;

in fig. 2 - cover;

in fig. 3 - funnel;

in fig. 4 - holder with a container for filtered liquid;

in fig. 5 - filter element.

The vacuum filtration device is a hollow vessel 1 with a lid 2 and a branch pipe 3 made in the side wall for connection with air pumping means, as well as a funnel 4 installed in the lid, configured to install a filter element 5 in it and supply liquid to it for filtration.

In addition, the device includes a holder 6 installed at the bottom of the vessel, made with the possibility of changing and installing a container 7 for filtered liquid coming from the funnel 4, which is replaceable.

In a particular case of the device, the hollow vessel 1 is made in the form of a cylinder, the lid 2 is made with the possibility of a threaded connection with the hollow vessel 1, the funnel 4 is made with the possibility of a threaded connection with the lid 2, the hollow vessel 1 in the form of a cylinder is made with a diameter of 90 mm and a height of 93 mm , the holder 6 for installing and holding the container 7 for the filtered liquid is made in the form of an insert on the bottom of the hollow vessel 1 with a hollow protrusion 8 for installing the container 7 for the filtered liquid in it, and the holder 6 for installing and holding the container for the filtered liquid can be equipped with two handles 9 for installing and removing the holder 6 from the hollow vessel 1.

Implementation of the utility model

A vacuum filtration device is used as follows.

The filter element 5 , for example, a membrane filter, is installed in the funnel 4, through which the filtered liquid flows directly or from the evacuation to increase the intensity into the container 7. During filtration, large solids and other impurities are removed from the liquid, making it difficult to analyze or leading to breakage of measuring instruments.

Compared with the known technical solutions, the proposed installation provides the ability to place a receiving container in the lower part of a hollow vessel, which allows filtering small volume samples with minimal losses, and also eliminates the need to wash the hollow vessel after each filtration if it is necessary to conduct high-precision studies, for example, by methods ion chromatography. All this improves the filtration quality and filtration performance.

Claims (7)

1. A vacuum filtration device, which is a hollow vessel with a lid and a branch pipe made in the side wall for connection with air pumping means, as well as a funnel installed in the lid, configured to accommodate a filter element in it and supply liquid for filtration into it, characterized in that that a holder installed at the bottom of the vessel is introduced, made with the possibility of changing and installing in it a container for filtered liquid coming from a funnel, which is made replaceable. 2. Device according to claim. 1, characterized in that the hollow vessel is made in the form of a cylinder. 3. The device according to claim 1, characterized in that the lid is made with the possibility of a threaded connection with a hollow vessel. 4. The device according to claim. 1, characterized in that the funnel is made with the possibility of threaded connection with the lid. 5. The device according to claim 1, characterized in that the hollow vessel in the form of a cylinder is made with a diameter of 90 mm and a height of 93 m. 6. The device according to claim 1, characterized in that the holder for installing and holding the container for the filtered liquid is made in the form of an insert on the bottom of the hollow vessel with a hollow protrusion for installing the container for the filtered liquid in it. 7. The device according to claim. 1, characterized in that the holder for installing and holding the filtered liquid container is provided with two handles for installing and removing the holder from the hollow vessel.

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