SU128754A1 - High pressure air filter - Google Patents

Description

The subject of the invention is a filter for cleaning air from harmful impurities when filling diving breathing balloons under pressure in the order of 200 agm.

When the cylinders of diving breathing apparatus are filled with air using conventional compressors, harmful impurities in the air, such as water vapor, oil, and others, also enter them.

The proposed high pressure air filter eliminates these drawbacks. The air filter is made of durable steel casing /, the design pressure is 200 atm, which has a nut 2 on the top with eight bolts 3, with which the body is sealed with a cap 4. At the bottom of the casing there is an inlet nipple 5 with throttle plate 6, a connector 7 for draining the condensate and shaler 8 for controlling condensate draining. During the operation of the filter, a small control tap is installed on the clamp 8.

In the upper part of the body there is an outlet connector 9. Inside the body there is a dismountable cassette 10 filled with cleaning materials.

At the bottom of the cassette are rings // Raschiga, ensuring the removal of large particles of moisture and oil from the air. Raschig's rings are covered with coarse feathers of hemp 12, on top of which is poured a layer of coarse fine silica gel 13, which provides air purification from moisture and oil vapors.

Behind the first layer of silica gel is located a second small layer of silica gel 14.

A control funnel 16 is installed between the first and second layer of silica gel in the air gap 15, which tube 17 communicates with choke 8.

 128754

For BTOpbijM s.; 1st, Llic | sl, a layer of activated carbon 18 is placed, which is loosed (air from unsaturated and unsaturated hydrocarbons, hs due to decomposition of the oil. | m, 1 lulic acid.

Each sorbent (| iltr | 1) is poured into a separate cassette. Then the cassette is NAYS from, days 20 into one common cassette. The rods are fastened by the lid of the cassette 21.

The cassette in the lower part of the housing is sealed with a gasket 22 to ensure the passage of air only through the sorbents of the cassette.

During the operation of the filter, silica gel is sprayed with water vapor and oil, which gradually flow into the bottom of the cassette silica gel and accumulate at the bottom of the strong filter housing, which makes it possible to monitor the testing of the high pressure filter charge. For this purpose, a funnel 16 with a tube 17 is installed in the filter. After saturating the first layer of silica gel 13 with moisture and oil, the second layer of silica gel will saturate 14. Drops of condensed oil and water vapor on the second layer of silica gel will drain into the funnel 16. When the control tap is opened, it is screwed At nozzle 8, drops of oil and water will be blown out of the air, which will make it possible to stop the working of the filter. After the silica gel has been developed, the need to recharge the filter arises, since the moistening of the activated carbon destroys its sorption capacity.

Perezar filter is made without disconnecting it from the pipeline. To do this, remove the cover of the filter housing and insert a cassette that is filled with fresh sorbents.

Since the filter will be connected to high-pressure cylinders, then in nerve filling the tank lllones of the diving apparatus there may occur a bolp-i.e. air velocity (with a large valve opening), which may blow the charge out of the filter cassettes.

To eliminate the latter, a throttled washer 6 was installed in the filter fitting 5, providing the necessary rate of filling the cylinders with air.

In addition, during throttling, the air is cooled, which ensures a more uniform nanolipe of the cylinders, and also contributes to the separation of water vapor and oil on the Rashg rings, ensuring a longer operation of the silica gel.

Subject invention

Claims (3)

1. High-pressure air filter for air purification from harmful impurities during the filling of bahtones of diving breathing apparatus consisting of successively disposed layers: Raschig rings, ochey hemp, silica gel, activated carbon, and chemical absorber placed in the filter housing, differing from that, in order to improve efficiency and usability, the elephant filter is placed in separate cassettes connected in a single collapsible unit, hinged in one cylinder. 2. The high-pressure air filter according to claim 1, characterized in that, in order to ensure (; silica gel performance monitoring, it is equipped with a control device installed in front of the top layer of silica gel, consisting of a funnel, connected by a tube with the control fitting of the filter, sigia . When opening a nozzle on the presence or absence of oil and water in the upper layer of silica gel. 3. Air filter BfjicoKoro pressure no pc. 1, 2, is distinguished by the fact that, in order to avoid blowing the charge from the filter cassettes and to improve the condensation of oil and water vapor in the filter beds, the fi.p. inlet fitting is equipped with a throttling washer.