SU784897A1 - Filter - Google Patents

Description

one

The invention relates to the field of devices for the purification of large volumes of dusty air both at milling plants, feed mills, and in other branches of the national economy.

A pulsed blowing filter is known that has a chamber of purified air, inside which are placed a nozzle block and a compressed air tank with npo-w blowing valves and membrane assemblies, a dusty air chamber with filter sleeves, and a sedimentary chamber with a discharge device. Pulse blow-off control for real-15 units 5KG control device, which includes a capacitive time relay with throttles and a retractable piston with a plate fixed on it, a distributor with a drive unit and a control unit (flip-flop element) fl

The disadvantages of this filter are the impossibility of free access to the membrane assemblies and purge valves without stopping the filter in case there is a need to replace the diaphragm or membranes, since they are located in the vacuum zone, if the suction or pneumatic conveying network is damaged.

(54) FILTER

grows; complication of the filter design, which creates a membrane assembly mounted on the purge valve, which makes it difficult to quickly determine the cause of the malfunction in the absence of a pulse in the filter bag and the reliability of the control device, which requires the installation of an additional device for cleaning .. compressed air, as a mixture air vapor with dust creates braking points for the plate moving along the slot of the distributor housing. These deceleration points create conditions for blocking the plate, which leads to disruption of the operation of the distributor and the non-impulse to shake the sleeves.

The aim of the invention is to eliminate these drawbacks, to increase the reliability and durability of the filter, to improve its operating conditions.

To achieve this goal, the filter is equipped with a distribution device installed in the valve chamber, comprising a housing, a fixed and movable discs, a spring and a nut, and a hermetic partition placed between the valve chamber and the clean air chamber. ,

FIG. 1 shows a pulsed purge filter; in FIG. 2, a distributor; on fig.Z - purge

valve - t - - / -. . ,, -,: ...-, -. The filter for cleaning dusty air contains a valve chamber 1 chamber 2 of purified air, chamber 5 of dusty air 3, sediment chamber 4 and outlet device 5.Clac.: Pannier chamber 1 is separated from the chamber cleaned by air 2 by an airtight partition 6. On valve capacity 7, it is valve-type. 10 chambers 1 are equipped with purge valves 8, which are connected by flexible pipes 9 to a distributor 10. A distributor consists of a housing, to which a fixed disk is screwed. e 11 (one or two depending on the number of sleeves) of the shaft 12;

the state on the undercarriage roller, disk 13, sprockets 14. connected to the shaft with tiftah 15 and 16, springs 17. with a nut - .. 18, providing a constant herm-. There is a gap between the fixed and rotating discs. In the distributor housing 10 and the disc 11 there are slotted holes, the number of which is equal to the number of filter elements E5, and disk 13 has only one slotted hole. The shaft 12 of the distributor 10 receives a rotation from the electric motor 19 through a pair of worm gearboxes 20. via a 3D chain drive.

Between the purge valve 8 and the container 7 there is a supramembrane chamber 21 in which it is located. 22, membrane 23, nozzles 24 and 25, membrane 23 has a hole 26.

The filter works as follows: ZOM,.,: “-, -,., ..- -. . : -,. .: ..-. - .. ----- -. - -.- The gas enters the chamber 3 of the dusty air and, after passing through the arms of 40 wa, proh: it sets into the chamber 2 purified air,

The sleeves are cleaned by pulsed blow-up as follows; Shaft 12 of distributor 10 receives rotation lg from the electric motor .19 and through a pair of worms: gearboxes 20 by means of a chain transmission. When you turn the dial, the wire is aligned with one.

From the distributor ports and. compressed) EC air in the supermembrane chamber 21 of one of the purge valves - 8 goes

in atmosphere. Pressure equilibrium over

four

the membrane and under the membrane breaks and the compressed air, which is constantly in the tank 7, overcomes the resistance of the spring 22, lifts the membrane 23, rushes inside the corresponding filter element 1 through the drain 24 and 25 - purging occurs.

When further disk rotation is rotated, the orifice communicates with the orifice in the distributor housing 10 and the compressed air 7 with capacitance 7 through the opening 26 of the membrane 23 enters the super membrane chamber 21, causing the pressure above the membrane and under the membrane to balance and the membrane under the action of the spring 22 closes the nozzle 24. Purging stops. all other filter elements are subsequently purged in a manner. After one turn of the disc, the purge is repeated.

The proposed filter is simpler to manufacture, reliable in operation, and does not require highly qualified staff. The use of such filters in prog / s reduces the labor costs for repairs and maintenance.

Claims (1)

1. Filter for cleaning dusty air, containing a valve chamber with purge valves and a pulsed blowing control device chamber: purified air, dusty air chamber with filter p; to avami, and sedimentary chamber. With the output device, in order to improve the reliability and durability of the filter and to improve the operating conditions, the filter is equipped with a distribution device installed in the valve chamber containing the housing. Fixed and movable discs., Spring and nut, and hermetic. Partition, located between the valve chamber and the chamber of purified air,. . . Information sources taken into account in the examination 1. Switzerland, patent number 480084, 1sl, B 01 D 46/02 dated 06/20/68, 784897 at