SU1211464A1 - Axial sectional vertical fan - Google Patents

Description

This invention relates to a toroid valve and concerns axial fans.

The purpose of the invention is to increase the efficiency and reliability of the fan.

FIG. 1 shows an axial sectional fan, a longitudinal section; in fig. 2 - lock and hydraulic cylinder, longitudinal section.

The axial sectional fan contains the basic and additional sections 1 and 2, respectively, each of which has a casing 3 and 4 and an impeller with blades 6 and 7 placed on the shaft 5 and a blade rotation mechanism 6 and 7 including switching disks 8 and 9., kinematically connected to the blades 6 and 7. The turning mechanism is equipped with a latch 10 for the position of the blades 6 and 7 and a hydraulic cylinder 11 with a housing fixedly fixed by B to the casing 3 of the base section 1, and a hollow box 12 connected by means of t g 13 with a permutation disk 9 additional sections and 2 and a disk 8 of the base section, with one of the tons of 13 interacting with the latch 10 of the position of the blades 6 n 7. The hollow piston 12 is provided on the inside with a power collar 14, and the disk 8 of the basic section 1 with bearings 15 side of the collar 14 and in contact with him. The latch 10 is made in the form of a twin hydraulic cylinder with a housing 16 and a hollow rod 17 having external annular ribs 18, which form the working and lateral cavities 19 and 20 with housing b, respectively, and a spring spring 21a 21 is installed in one of the end cavities 20, and on the other, crackers 22, firmly fixed on the body 16, and 13 tons, 13, which are assisted with the latch 10, passed through the cavity of the rod 17. During operation, one Epmento fluid flows into the working cavities - 19 of the latch 10

10 and the hydraulic cylinder 11, wherein the hollow rod 17 of the clamp 10 moves downward, compressing the spring e, 21, and releases the bearings. 22. The hollow piston 12 of the blade rotation mechanism moves and, through the movement, the collar 14 influences the bearings 15 permutation disk 8 of the base section 1, which rotates the blades 6 of the impeller of the base section. At the same time, the rods 13 move with these.m., they are applied by the permutation disk 9 of the additional section 2 and simultaneously rotate all the blades 7 of the impeller of the additional section 2. With the connecting / i working 19 and end 20 cavities of hydraulic cylinders with a drain line, the hollow porgen.1 12 stops, and the hollow

25 rod 17 under the action of cup springs

21 pushes up, squeezes crackers

22 and thus fixes 13 and, subsequently, blades 6 and 7 in a given position.

20

.WITH

(J.ocT. IsHTO.;

Editor E. KoichTechred I. Bepf

Order 624/40 Circulation 587

VNII PI State HS

on delalam inventions

113035, Moscow, F - 35, Ra;

Fn.1ia; 1 PPP “Patent, Uzhg

and

 Shska nab., D. Fod, st. Driveway

4/5 gna,

Claims (3)

1. AXIAL SECTIONAL VERTICAL FAN, comprising a base and an additional section, each of which has a casing and an impeller with blades placed on the shaft, and a blade rotation mechanism, including permutation disks kinematically connected to the blades, characterized in that, for the purpose of increase the efficiency and reliability of the operation, the blade rotation mechanism is equipped with a blade position lock, a hydraulic cylinder with a housing fixedly mounted in the casing of the base section, and a hollow piston connected by means of rods to restoration disk of the additional section and the disk of the base section, and one of the rods interacts with the position lock of the blades. 2. The fan according to π. 1, characterized in that the hollow piston is provided with a power collar on the inside, and the base section disk is provided with bearings placed on and on both sides of the collar. 3. Fan according to π. 1, characterized in that the latch is made in the form of a double hydraulic cylinder with a casing and a hollow rod having outer annular ribs forming working and end cavities with the casing, and a disk spring is installed in one of the end cavities, and crackers rigidly fixed on the other housing, and the thrust interacting with the latch is passed through the stem cavity. h FIG. 1 1211454