RU2074012C1 - Device for automatic supply and filtration of liquid - Google Patents

Abstract

FIELD: liquid supply and filtration. SUBSTANCE: device has filter installed in intake hose, airtight vessel with suction branch pipes connected by means of pipelines with ejector and air distributor made in the form of body with holes for communication with atmosphere, airtight vessel and with the help of pipeline with compressed air main line. Air distributor has cylindrical and conical cavity in which reciprocating rod is installed whose upper part is conical and lower part is below lower edge of suction branch pipes with rod in the lower position. EFFECT: higher efficiency. 1 dwg

Description

 The invention relates to filtering liquids and can be used for automatic filtering, transfusion and pumping liquids with various properties, including highly aggressive, explosive and fire hazardous.

 Closest to the technical nature of the invention is a device for filtering liquids, which consists of a filter, an intermediate tank, an ejector and a coupled float valve located in an additional tank.

 Its intermediate tank is connected through a pipeline to the lower filter chamber, and to the galvanic bath with a dyurite hose, which can easily be transferred to similar containers. It also contains control valves, vacuum gauges for measuring vacuum in the intermediate tank and in the filter chamber.

 The ejector is connected to a compressed air source by a pipeline and a ventilation system. The lower chamber is equipped with a float valve. The upper and lower chambers are connected by a filter partition.

 Installation works as follows.

 When compressed air passes through the ejector in the additional and intermediate containers and in the lower filter chamber, a vacuum is created, with the help of which liquid is pumped from the galvanic bath through the hose to the intermediate and additional container, the two-way float valve rises and opens the lower valve, through which the liquid passes through the pipeline drains into the upper filter chamber.

 The liquid passes through the filter baffle and enters the lower chamber of the filter, from where it flows through the float valve into a galvanic bath.

 When the intermediate and additional tanks are filled with electrolyte, a float valve in the intermediate tank pops up and closes the upper valve, preventing the filtered fluid from penetrating through the ejector into the ventilation system. If there is no electrolyte in the tanks, the float valve goes down, closes the bottom valve and stops the communication of these tanks with the atmosphere.

 The float valve and the filter installed in the lower chamber play the same role. A float valve installed in its upper chamber protects the liquid from overflowing (A. St. N 850139, class B 01 D 29/60, 1981).

 The disadvantages of this device include the fact that it is intended only for automatic filtering and overflow of liquids. But you can not pump these liquids into containers that are installed above the vacuum filter. The disadvantages include the complexity of the design. It contains intermediate and additional tanks, interconnected by a filter with pipelines and three float valves. Therefore, the high cost of manufacturing and its poor reliability in operation.

 The aim of the invention is to provide the possibility of pumping liquid from a sealed container to other containers that are installed above it, improving the technical characteristics of the device by increasing the vacuum in the sealed container, and hence the height of the overflow of liquids into it, increasing the reliability and stability of the entire device and increasing speed draining fluid from a sealed container.

 The drawing shows a General view of the device.

 A device for automatically feeding and filtering liquids contains a filter 1 installed in the intake hose 2, it is connected to a sealed container 3 through a check valve 4. A drain pipe 5 is connected to a sealed container 3 through a check valve 6. A float valve 7 with weights 8 is installed on the rod 9 with two stops 10 and 11 in an airtight container 3. On the top cover 12 of the airtight container 3 there are suction nozzles 13 mounted on it with nuts 14 and gaskets 15, and an air distributor housing 16 mounted on it with the bottom cover 17, with holes 18 and gaskets 19. A rod 20 is installed in the housing 16, the cone 21 of which is pressed against the conical hole 22 of the housing 16 by a spring 23 installed in the hole 24 of the rod 20 through the washer 25 with a bolt 26 with a lock nut 27 installed in the upper the cover 28 with holes 29. The connection of the internal cavity 30 of the housing 16 with the atmosphere through the holes 29 is blocked by means of a seal 31 installed in the annular groove 32 of the rod 20. The holes 33 of the suction pipes 13 are connected by pipelines 34 to the passive nozzle 35 of the ejector 36, and its active nozzle 37 chimney the gadfly 38 with a compressed air line 39, which is connected by a pipeline 40 and with the internal cavity 30 of the housing 16. In the pipelines, control valves 41 are installed, and between the stem 20 and the opening of the housing 16 there is an annular gap 42. In the container 43 there is a liquid 44, which must be filtered or pour into the tank 45, or pump into the tank 46 through the discharge pipe 47 connected by a pipe 48 with a drain pipe 5.

 The device operates as follows.

 Before starting work, it is necessary to open the valves 41 in the compressed air line 39 and in the pipelines 38 and 40, through which compressed air is supplied to the active nozzle 37 of the ejector 36 and into the internal cavity 30 of the housing 16 of the air distributor, which will pump air from the sealed container 3. Upon reaching in it a certain vacuum, the liquid 44, under the influence of atmospheric pressure, passing through the filter 1, will be poured from the tank 45 into a sealed container. The float valve 7 will rise up and in the upper position with an emphasis 10 will lift the rod 20 up, block the holes 33 of the suction nozzles 13 and open the conical hole 22 of the housing 16 of the air distributor. Then, compressed air through the conical opening 22 will enter the upper part of the sealed container 3, unfilled with liquid, and if the valve 41 in the pipeline 48 is closed, it will accelerate its discharge into the container 45. If the valve 41 is closed in the drain pipe 5 and is open in the pipeline 48 , then with the help of compressed air it will merge into the tank 46, which is installed above the sealed container 3. The height of the liquid depends on the pressure of the compressed air in the sealed container. The stop 9 will be kept in the upper position due to the pressure difference: vacuum in the holes 33 of the suction nozzles 13 and the compressed air pressure in the sealed container 3. After draining the filtered liquid 44 from the sealed container 3, the float valve 7 with the load 8 will go down, they will stop act as a buoyant force, and under the influence of their weight and compressed air they will tear off the stop 10 of the rod 9 from the suction nozzles 13 and the operation cycle will be repeated. Without installing the filter 1 in the intake hose 2, the machine can also be used to pour liquid 44 into the tank 45 or transfer it to the tank 46.

 The choice of materials from which the machine is made is determined by the properties of the liquids that need to be filtered, transfused or pumped. Such materials can be vinyl plastic, fluorine plastic, stainless and structural steels.

Claims (1)

 A device for automatically supplying and filtering liquids, comprising a filter, a sealed container with a suction hose and a drain pipe, an ejector, a compressed air line and a float valve, characterized in that it is equipped with a pressure pipe, suction pipes installed in the upper part of the sealed container, connected by pipelines to an ejector, the lower edges of which are located in a sealed container, and an air distributor, made in the form of a housing with holes for communication with the atmosphere, sealed capacity and through a pipeline with a first non-return valve with a compressed air line having a cylindrical internal cavity in which a rod is installed with the possibility of reciprocating movement, the upper part of which is made conical, and the lower in the lower position of the rod is located below the edge of the suction nozzles, while the filter installed in the intake hose, which is connected to the sealed container through the second non-return valve, the drain pipe is connected to the sealed container through the third non-return The valve and the pressure through the fourth pipe, and a float valve configured to goods and is mounted on the rod with two stops in the hermetic vessel.