RU2006260C1 - Air filter - Google Patents

Abstract

FIELD: air purifying . SUBSTANCE: device has a cylindrical body with a swirler having the form of a tangential duct; an elastic filtering member having the form of rigid rings laterally secured to the filtering member and positioned one under another. The rigid rings are allowed to be diminished in diameters downward in the conical part of the filtering member so that each underlying ring being capable of passing through the overlying one. The device further has a duct with a flap-valve connected to the dust catching bin; a duct for the purified gas removal provided with a rod diametrically attached in it, the duct being axially secured above the filtering member. The device further has a conical valve removably suspended on a flexible suspension member under the duct and in an axial alignment with it. Conical valve is connected to the lower end of the filtering member by a flexible link. EFFECT: enhanced efficiency of purification. 2 dwg

Description

 The invention relates to the field of air purification from dust of various origins and can be used in vortex systems for separating and disposing of dusty materials from flue gases.

 The aim of the invention is to simplify the design and reduce energy consumption.

 This goal is achieved by the fact that in the air purifier containing a cylindrical housing with a swirl, a filter element, for example, in the form of an elastic sleeve of a cylindrical-conical shape with a frame mounted vertically in the housing along its axis, nozzles for removing clean gas from the cavity of the filter element and separated impurities from the annular channel between the walls of the housing and the filter element, the regeneration system, the regeneration system is located inside the housing and contains a frame of rigid rings, horizontally fixed connected to the filter element one below the other with diameters decreasing towards the bottom in its conical part with the possibility of passage of each lower ring through the upstream and conical valves, movably suspended coaxially under the clean gas outlet pipe and connected by a flexible connection to the free lower end of the filter element.

 In FIG. 1 shows the proposed air purifier (section in a vertical plane) in the dusty air filtration mode; in FIG. 2 - the moment of closing with a conical valve of the nozzle for the removal of purified gas.

 The air purifier contains (Fig. 1) a cylindrical housing 1 with a swirl in the form of a tangentially located discharge pipe 2, an elastic filtering element in the form of a bag 3 with a frame in the form of rigid rings 4, horizontally fixed to the filtering element (3) under each other, decreasing to the bottom in its conical part with diameters with the possibility of each lower ring passing through the upstream pipes 5 with a flashing valve 6 connected to a dust collecting hopper 7, a pipe 8 fixed to the filter element 3 coaxial therewith for discharging purified gas from diametrically fixed core 9, the conical valve 10 is movably suspended coaxially by spigot 8 on the flexible suspension 11 and connected to a flexible coupling 12 to the lower end of the filter element 3.

 The operation of the air cleaner.

 Dusty air pumped by the fan through the nozzle 2 tangentially enters the housing 1, in which, due to centrifugal force, large dust particles settle downward, moving in a spiral towards the nozzle 5 and accumulate on the flasher 6, and when the accumulated critical mass is reached, the moment of which is relatively articulated flasher valve 6 exceeds the counterweight moment, the valve opens and the pulverized material is discharged into the hopper 7, after which the flasher valve 6 closes again. A finer fraction of the dust is retained in the flexible filter element 3 when air passes through it. As dust builds up on the filter element 3, the difference in air pressure between the annular channel and the cavity of the filter element 3 increases, which leads to the filter element 3 being turned out of its lower end and rising upward to the valve 10. As the air pressure in the annular channel increases further, due to an increase in the accumulation of dust on the filter element 3, its lower end reaches the valve 10, due to the lifting of which the pipe 8 of the purified gas outlet is closed (Fig. 2). After the nozzle 8 is closed, the air pressure in the annular channel and in the cavity of the filter element 3 is quickly equalized and the lower end of the filter element 3 under the influence of its own weight with the rings 4 and layered dust falls, dynamically acting at the end of the fall on the valve 10 through a flexible connection 12 and translating it in the initial lower position. The dynamic effect of the lower end with a free fall tears the valve 10 from the end of the nozzle 8 to the end of the fall path and, due to inertial forces, shakes off dust deposits from the outer (from the side of the annular channel) surface of the flexible filter element 3. Further, automatic filtration-regeneration cycles are repeated during operation a fan forcing dusty air. In this case, the cycle repetition rate is proportional to the degree of concentration of dust in the gas.

 The proposed air cleaner is much simpler in design, has lower energy costs and is 1.5-2 times cheaper due to the exclusion of a high pressure source for regeneration. (56) Copyright certificate of the USSR N 1263316, cl. B 01 D 46/02, 1986.

Claims (1)

 An AIR CLEANER comprising a housing with a vertically placed filter element in the form of a porous conical bag turned inside out with a large base in the upper part, the bottom of which is connected by a flexible connection, and an outlet pipe with a valve mounted above the filter element, characterized in that, in order to simplify the design and reduce energy consumption, the filter element is equipped with a frame made of rigid rings horizontally mounted one above the other in the height of the bag, and the valve is made conical and connected n with a flexible coupling.

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