SU1574250A2 - Device for removing dust from air - Google Patents

Abstract

The invention relates to a technique for cleaning air from fine dust and oil mist, which is formed during the operation of vacuum pumps. The purpose of the invention is to expand the functionality of the device by providing air purification from oil and increasing the efficiency of the oil drain. For this purpose, a storage pocket 13 is made on the housing of the device, a separator shutter 15 and an oil wiper screen 20. The storage pocket 13 is designed as a peripheral tank, the inner wall of which forms with the separation shutter 15 an additional hydraulic seal cavity 16, the pallet communicates with the storage chamber 13 through jet. The device provides for the collection and removal of butter products from the pan with circulating water. 1 hp f-ly, 2 ill.

Description

The invention relates to a technique for cleaning ventilation exhausts from fine dust and, additionally, from oil mist, formed during the operation of vacuum pumps (type NVZ), and can be used to clean gases from smoke and aerosols.

The purpose of the invention is to expand the functionality of the device by providing additional air purification from the oil, as well as increasing the efficiency of the oil drain.

Figure 1 shows the device, a general view; figure 2 - node I in Fig, 1.

The device includes a housing 1 with nozzles of the inlet 2 and air outlet 3. The housing houses an irrigation device 4, a separator 5 of condensed moisture, a contact surface 6, a fender cone 7, a pallet 8. The fender cone 7 is mounted on chamber 9 with a frame filter 10 made of Petra nova fabric and two nets. The pipe 11 serves to supply purified water from the chamber 9 to the circulating irrigation pump.

devices 4, and the pipe 12 - for draining water and sludge from the pallet 8.

On the periphery of the chamber 9 there is a storage pocket 13, the inner wall 14 of which forms with the dividing curtain 15 an additional hydraulic lock cavity 16. At the top, this cavity is connected to the atmosphere by an air jet 17. The storage pocket 13 is connected to the pallet by the jet 18 and to the oil discharge tank 19 An oil scraper screen 20 is fixed on the wall 14 along the cutting edge, and the drainage of water and oil is carried out through the pipe 21. The outer wall 22 of the pocket 13 is placed coaxially with the wall of the housing 1;

The air cleaning device operates as follows.

The air to be cleaned, containing fine dust and oil aerosol, under the action of the fan enters through the inlet 2 of the entrance to the volume of the housing 1 and, in contact with the firing cone 7, changes its direction and passes alternately through the contact surface 6, sprinkler

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my device is 4 and the separator is a drip 5.

In the course of its movement through the above devices, the air is freed from dust and oil aerosols due to coagulation and deposition on the contact surface 6. Then these deposits are washed away with a water film flowing downward to the air flow from the contact surfaces 6 into the pallet 8 along the profile of the fender 7 The cleaned air is emitted into the atmosphere through the air outlet port 3, and the water contaminated with oil and dust is collected in the sump 8, and dust accumulates in its lower part, since it is not passed through the frame filter 10 9. The sludge is removed periodically through the pipe 12. Due to the difference in its weight with water, it floats to the upper level of water in the additional cavity 16 and collects on it in the form of a film, which gradually flows along the oil wiping screen 20 into the storage pocket 13, and the level in it is always less than in the additional cavity 16, which is provided by the water jet 18, the air jet 17 and excess pressure relative to the atmospheric pressure of the purified air, which keeps the water level in the sump 8 5-10-10 mm lower than in the cavity 16 . The discharge of oil collected in the storage pocket 13 is carried out periodically through the oil discharge pipe 19, and its complete emptying is carried out through the pipe 21,

Thus, due to the presence of the nozzles 17 and T8,

differential pressures and levels in cavity 16, pocket 13 and pallet 8.

Dividing curtain provides elimination of wave formation in the cavity

16, which makes it possible to separate the oil from the water. Purpose of a pocket 13 - collecting and dumping of oil. Screen 20 is preferably made of low-density sheet polyethylene, which allows for better drainage of oil, especially at temperatures below 0 ° C (no ice crust is formed on polyethylene of this density), the shape of the screen — in the form of an arc in cross section — also provides optimal conditions

drain oil.

Claims (2)

1. Device for cleaning air from dust St. No. 906593, characterized in that, in order to expand the functional capabilities of the device by providing additional air purification from the oil, it is provided with a storage pocket, a dividing curtain and an oil-collecting screen communicated with the pallet through the jet, while the outer wall of the storage pocket is located coaxially but the casing wall, the separation curtain is immersed in the pallet liquid to form a hydraulic lock cavity, and the oil scraper screen is attached along the edge of the inner wall of the storage pocket. 2. Pop.1 device, characterized in that, in order to increase the efficiency of the oil drain, the oil wiper screen Made of polyethylene and arcuate in cross section. 1B - 12 Phi, r2