SU475455A1 - Axial sectional vertical fan - Google Patents

Description

one

The invention relates to mining and can be used to ventilate mines and mines.

Mine vertical axial fans with a mechanism for simultaneous rotation of the impeller blades on the go are known.

The disadvantage of such fan installations is the impossibility of changing the number of impellers and operating stages.

The purpose of the invention is to increase the efficiency of the fan when changing network parameters.

This is achieved by the fact that the mechanism for rotating the blades is placed in the base section and is connected to the blades of the upper sections by means of a gear gear bushing.

FIG. 1 depicts a two-stage sectional fan, open, full view; in fig. 2 — communication unit of the base section with the stackable one.

The two-stage fan consists of the lower base section 1 with the impeller 2, the expandable (removable) stage 3 with the impeller 4, the mechanism of simultaneous rotation of the blades of the impeller 5, shaft 6, housing 7, the coupling half - for connection with the transmission shaft 8, the coupling 9 and the coupling halves with a support 10 for connecting the shafts of the fan section, which are housed in gear sleeves x II, which serve to rotate the blades of the upper-stage impellers from the swivel actuator located in

lower base section.

The mechanism of simultaneous rotation of the impeller blades 5 consists of brake linings with actuators 12 and 13 of the brake discs 14, respectively attached to the lower gear hub 11 i: to the outer gear 15 of the planetary gear, which is engaged with the inner gear 17 of the planetary gear , on which the lower bush-shchestrin 11 is fixed. Satellites 16 are mounted on the shafts of the shafts 18, along which the disks 19, connected by means of the tailings 20 with the blades of the impeller, move through pairs of screw-nut .

The axial sectional vertical fan can work as a single-section fan. when the upper section is removed, and instead of the coupling sleeve 9, the transmission half coupling half is mounted on the shaft of the base section 1

shaft 8, or as multisectional with intermediate sections, in which the upper and lower ends of the shafts are provided with coupling sleeves 9 and placed in gear sleeves gear 11.

The blades of the fan impellers are rotated by the energy of rotation of the fan shaft 6 and the slowing and rotation of the brake discs 12 or 13 of the brake discs. At the same time, the outer gear 15 of the planetary mechanism begins to rotate at an angular speed less than the inner gear 17, thereby Begin vrash, sats satellites 16 at the ends of the shafts 18, which by means of the bogie-nut and the disks 19 and through the shanks 20 are dried, the rotation of the rotors of the impellers is detected.

PRIOR DIRECTORSHIP and

An axial sectional vertical fan, each section of which includes a casing, a shaft, an impeller, a spraying apparatus and a blade rotation mechanism, is also so that, in order to improve its efficiency when changing network parameters, the rotation mechanism of the loggatok is placed The base section is connected to the blades of the upper sections by means of a serrated bushing.

FIG. 2