SU1303739A2 - Centrifugal pump - Google Patents

Abstract

The invention relates to the field of pump construction. The purpose of the invention is to increase reliability and reduce energy consumption by reducing pump clogging by fiber inclusions. The figured disk 4 adjacent to the rear surfaces of the 5 blades 2 of the impeller is outlined with curves concave toward the center of the wheel. At both ends 3 and 7 of the blades 2 in the tangential direction, bevels are formed which form an acute angle with the body wall with the apex directed toward the center of rotation of the wheel. The fibrous inclusions are cut by the ends 3 and 7 and carried away by the flow through the opening 9. As a result, the pump is not blocked by fibrous inclusions and the energy consumption is reduced by removing the braking torque that occurs when the inclusions enter the pump. 2 Il. to / tttz ///////// /. m fie.1

Description

The invention relates to pump construction, can be used in agricultural machinery pumps for pumping fluid with fiber inclusions and is an improvement of the invention according to the author. No.

The purpose of the invention is to increase reliability and reduce energy consumption by reducing pump clogging by fiber inclusions.

FIG. 1 shows a centrifugal pump, a longitudinal section; on, 2- view A in fig, 1.o

The centrifugal pump includes a housing 1 and an open impeller with blades 2, and the end 3 of each blade 2 of the impeller is made with a bevel in the tangential direction about

razuyutsya with the wall of the case 1 acute angle ot with the apex directed in the direction of rotation of the impeller. The wheel is equipped with a figured disk 4 adjacent to the rear surfaces of the 5 blades 2 and outlined curves 6, concave to the center of the wheel, and the bevels are made on both ends 3 and 7 of the blades 2. The impeller is fixed on the shaft 8. The housing 1 has an outlet 9.

The centrifugal pump operates as follows.

When the shaft 8 rotates, the pumped medium enters the impeller through the central inlet (not shown in the drawing), which is thrown out by blades 2 through the outlet 9. The fibrous

the inclusions that fall into the gap between the ends of the 3 blades 2 and the walls of the body, the beveled ends of the 3 blades 2 are cut and carried away by the flow created by the Blades 2 into the outlet opening 9. The inclusions that fall into the gap between the ends of the 7 blades 2 and the walls of the body 15 are cut by the beveled the ends 7 and through the notches in the shaped disk 4, outlined by curves 6, enter the pressure flow created by the Blades 2 and are ejected through the opening 9. Grinding of fibrous inclusions and their removal from the gap between the housing 1 and the ends of the 7 blades 2 through the notches in disk 4j outlined by curves 6, this gap can be prevented from clogging and thus increase reliability of operation and reduce energy consumption by sleeping the braking torque that occurs when inclusions enter the gap.

Claims (1)

Invention Formula Centrifugal pump ant, st. No. 544737, characterized in that, in order to increase operating reliability and reduce energy consumption by reducing pump clogging with fibrous inclusions, the wheel is provided with a figured disk adjacent to the three-sided surface of the blades and the contoured curve 1i, concave toward the center of the wheel, and bevels are made on both the ends of the blades. I VNIIPI Order 1288/35 Circulation 575 Subscription Proizv.-polygr. np-TMBj Uzhgorod, Proektna St., 4