SU1677371A1 - Pump for pumping heterogeneous medium - Google Patents

Abstract

Invention m. used in vertical pumps for pumping liquid and semi-liquid organic fertilizers in agriculture. The purpose of the invention is to increase the reliability and performance of the pump when pumping media saturated with abrasive and fibrous inclusions by preventing clogging of the flow part of the inclusions. A centrifugal wheel with disks 3, 4 and blades 5 is installed in the housing 1 with the inlet 2. Blades 5 connected to the disk 4, having an elongated throat, a blade 7 of the screw cantilever is attached to the inner surface of the cut. The disk 4 is connected to the disk 3, the Neck 6 through the hole 2 is brought out of the limits of the housing 1. The edges of the blades 7 are cut from the inside of the screw from a larger diameter to a smaller part of the screw aperture pitch. The blades 5 are made passing into the blades 7. At the end of the neck 6, the knives-choppers 8 are installed. On the outer surface of the neck 6, the blades 9 of the additional screw are mounted. The disk 3 is located with a gap relative to the ends of the blades 5. 4 Cp f-ly, 4 ill. (L С Os VI XI from h) S

Description

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The invention relates to pumping engineering and can be used, in particular, for pumping liquid and semi-liquid organic fertilizers in agriculture.

The purpose of the invention is to increase reliability and productivity when pumping media saturated with abrasive and fibrous inclusions by preventing clogging of the pump flow part.

FIG. 1 shows a pump for pumping inhomogeneous media, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 — centrifugal throat with screw propellers fixed to the inner surface; in fig. 4 is a view B in FIG. 3

A pump for pumping non-uniform media comprises a housing 1 with an inlet 2 and an impeller with two interconnected disks 3 and 4, one of which (4) is equipped with centrifugal blades 5 fixed on it and an elongated neck 6, on the inner surface of which the blades of the 7-screw are fixed. The neck b through the inlet 2 is brought out of the body 1, and the input edges of the blades 7 of the screw cut from the inner side of the latter from a larger diameter to a smaller part of the pitch of the screw auger. The blades 5 of the centrifugal wheel can be made passing in the blades 7 of the screw. Knife-shredders 8 can be mounted on the end face of the neck 8. 8. The blades 9 of the additional auger can be mounted on the outer surface of the neck 6. The disk 3 may be located with a gap 10 relative to the ends of the blades 5. The pump is equipped with connecting elements 11 in the form of blades, by means of which the disks 3 and 4 are interconnected, as well as the outlet nozzle 12 with a knife installed in it

13, spiral impeller blades

14, mounted on the disk 3, and the shaft 15.

The pump works as follows.

The neck 6 or the entire pump is immersed to the required depth in the pumped medium, and the centrifugal wheel is rotated by means of the shaft 15. At rotations of a wheel of the blade 9 additional

the auger mixes the pumped medium saturated with abrasive and fibrous inclusions, the shredding knives 8 cut the fibrous inclusions, and the auger blades 7 take the medium and feeds it to the vanes 5 of the wheel, then the medium through the outlet nozzle 12, additionally crushed with a knife 13, is fed to the consumer.

The presence of a cut of the input edges of the blades 7 of the screw prevents overlapping of fibrous inclusions on them. The presence of a gap 10 between the disk 3 and the blades 5 provides a free passage unground

Claims (5)

1. A pump for pumping non-uniform media, comprising a housing with an inlet and an impeller with two interconnected discs, one of which is provided with mounted on it centrifugal blades and an elongated neck, on the inside of which the auger blades are fixed, which, in order to increase reliability and productivity with pumping media saturated with abrasive and fibrous inclusions by preventing clogging of the pump flow part by inclusions, the throat through the inlet is out of limits the body, and the input edges of the blades of the screw cut from the inner side of the latter from a larger diameter and a smaller part of the coil pitch. 2. A pump according to claim 1, characterized in that the blades of the impeller are made to pass into the blades of the auger. 3. Pump according to Claim 1, characterized in that knives of choppers are installed at the end of the neck. 4. A pump according to claim 1, characterized in that the blades of the additional screw are mounted on the outer surface of the neck. 5. Pump pop, 1, different the fact that the ends of the blades attached to the disk with the neck, installed with zazbrom relative to another disk. // V-Y 1Ш.Ш Z tnft View 6 FavM