RU2196633C1 - Device for continuous automatic filtering of liquids including drinkable tap water - Google Patents

Abstract

FIELD: devices for filtering of various liquids including drinkable tap water; applicable in various industries, urban, settlement and household conditions. SUBSTANCE: device has filter whose lower cavity intended for collection of filtered liquid is connected by means of drainage pipeline through safety valve to vessel for filtered liquid. Safety valve is installed in said vessel and provided with float secured to lever for shutoff of discharge of filtered liquid in upper position of float, and for opening of safety valve with float in lower position. EFFECT: reduced device overall dimensions, more rational utilization of liquid pressure energy in pipeline, abandoned ejector with its irrational use, for instance, under household conditions. 1 dwg

Description

 The invention for filtering various liquids, including drinking tap water, and can be used in various industries, urban, township and at home.

 A device for continuous automatic filtering of liquids is known, patent class B 01 D 29/60, 37/04, priority from 03/31/97, which is designed to filter liquids in various industries.

 This device contains a filter with a suction hose mounted on a nozzle of a vertical additional pipeline, which is installed above the liquid level, which can be lifted by the suction force of the ejector, connected through its passive nozzle to the upper part of this additional pipeline, and its lower part to the tank with filtered liquid. The tank has a pipeline for draining filtered fluid from it. And compressed air is supplied to the ejector through the compressed air line. All pipelines have control valves.

 The device operates as follows. Before starting work, close the valve in the additional pipeline and open in the compressed air line. Compressed air, passing through the ejector, creates a vacuum, vacuum in an additional pipeline, with the help of which liquid under atmospheric pressure, passing through the filter, will merge into this pipeline. After filling it with filtered liquid, open the tap, pour it into a drain tank and switch to automatic operation. Under the influence of atmospheric pressure, liquid from the discharge tank fills the pipeline to a certain height. This height depends on the suction force of the ejector and the density of the liquid. And the liquid from the tank installed above this tank, passing through the filter, will be discharged into an additional pipeline, and from it into the tank from which it can be diverted through the filling pipeline.

 The disadvantages of this device include a small pressure drop: atmospheric and vacuum, so the low filtering speed. Large overall dimensions create difficulties in its use and inappropriate use at home for filtering drinking tap water.

 The closest in technical essence, selected as a prototype, is a device for continuous automatic filtering of liquids, patent 21069074, class B 01 D 29/60, 35/12, priority from 12/27/93, containing a vacuum filter with upper chamber and chamber the filtrate, divided by a mesh partition with filter elements. As the latter, filter cloths, paper, etc. can be used.

 In the tank, which is filled with filtered liquid, an additional pipeline is installed vertically and fixed, connected in its upper part by a pipeline with a passive nozzle of the ejector. Compressed air is supplied to its active nozzle from the compressed air line. The drain pipe of the vacuum filter is connected by a pipeline to the upper part of the pipeline. The fluid to be filtered is fed into the upper chamber of the vacuum filter through a pipe. A float valve is installed in the upper chamber to prevent overflow. In the drain tank there is a pipeline for draining the filtered liquid from it. Pipelines are equipped with control valves.

 The lower end of the drain pipe of the vacuum filter is installed above the liquid level, which the suction force of the ejector can raise in it. The lower end of the additional pipeline is immersed in a container with filtered fluid.

 The device operates as follows. Before starting work, close the taps in the vertical pipe and the drain pipe of the vacuum filter. A tap is opened in the pipeline through which liquid is introduced into the upper chamber of the vacuum filter. Then open the valve in the compressed air line. Compressed air passing through the ejector creates a vacuum in the vertical pipe and the filtrate chamber.

 Initially, filtering is carried out using a vacuum filter, after filling the filtrate chamber with filtered liquid, it is manually drained using a tap in the drain pipe into a drain tank. After filling it, they switch to continuous automatic filtering. To do this, close the taps in the drain pipe and open the tap in a vertical pipe. Under the influence of atmospheric pressure, the liquid from the discharge tank fills the vertical pipeline to a certain height. This lift height depends on the suction force of the ejector and the density of the liquid. The filtered liquid from the chamber of the filtrate of the vacuum filter installed above the drain will merge into the upper part of the vertical pipeline, and from it into the drain tank, from which it is piped for its intended purpose.

 Adjusting the operation of the device is performed using cranes. After finishing work, it is necessary to close the taps in the pipelines. The choice of materials from which the device is made is determined by the properties of the liquids to be filtered, such materials may be vinyl plastic, polyethylene, fluorine plastic, etc.

 The disadvantages of the device should include its larger overall dimensions, because of which it is not always advisable to use it, for example, at home for filtering tap water.

 Irrational use of pressure, pressure, fluid in the pipeline, from which it merges into the upper chamber of the vacuum filter, because of this there is a small difference in vacuum pressure and atmospheric pressure, and therefore a low filtration rate.

 It is not always and not always advisable to use an ejector, for example, where there is no compressed air and when filtering volatile liquids.

 This goal is achieved in that the lower cavity of the filter, into which the filtered liquid is drained, is connected by a pipe through a safety valve to a container for draining the filtered liquid into it, with the ability to overlap it in the upper position of the float attached to the lever and open in the lower position of the float. And this allows you to reduce the large overall dimensions of the device, more efficiently use the energy of the head, the pressure of the liquid in the pipeline from which it merges into the upper chamber of the vacuum filter, increase the pressure drop: excess and atmospheric, and thereby increase the filtering speed, and refuse to use an ejector , and this makes it more suitable for filtering volatile and toxic liquids and drinking tap water at home. At the same time, the automatic mode of operation of the device is preserved and the complexity of its maintenance during operation is reduced.

 In this, the author sees the novelty and significant differences of his proposed device for continuous automatic filtering of liquids, including drinking tap water.

 The drawing shows a General view of the device.

 It contains a pipe 1, through which liquid under pressure is supplied for filtering into the filter 2. Its lower cavity 3 is connected through a drain pipe 4 and a safety valve 5 with a capacity 6 for draining the filtered liquid into it. The safety valve 5 is equipped with a lever 7, on which the float 8 is fixed, with the ability to block the drain in its upper position and open in the lower one. Capacity 6 is connected by pipelines 9, through which the filtered fluid is drained according to its intended purpose.

 The operation of the device.

 Open the valve 10 in the pipeline 1. Then the liquid to be filtered will enter the filter 2 and, passing under pressure through its filter elements, which are not shown in the drawing, will merge into the lower cavity 3 and through the pipeline 4 and the safety valve 5 into the drain tank 6. When it is filled, the float 8 in the upper position through the lever 7 will block the drain of the filtered liquid, which will protect the tank 6 from overflow, and after pouring it according to its purpose, the float 8 in the lower position will again open the drain of the filtered liquid place in the drain tank 6 and will automatically resume the operation of the device.

 After finishing work, close the taps 9. The material from which the device is made depends on the chemical properties of the filtered liquids.

Claims (1)

 A device for continuous automatic filtering of liquids, containing a filter, a pipeline for supplying the filtered liquid to the filter, a safety valve and a container for filtered liquid, characterized in that the lower filter cavity, which serves to collect the filtered liquid, is connected by a drain pipe through a safety valve to the filtered container liquid, while the safety valve is equipped with a float fixed to the lever with the ability to block the drain of the filtered liquid and in the upper position of the float and open - in the lower position of the float.