RU1820037C - Self-priming centrifugal pump - Google Patents

Abstract

Usage: in technological processes associated with the movement of liquids and gases, the creation of pressures and vacuum. SUMMARY OF THE INVENTION: The pump comprises a rotor (P) 1 in the form of a hollow truncated cone having a bottom in the area of the smaller base and a cover in the upper part of the larger base. An inlet 5 is located on the cover along the axis of rotation. P 1 is placed in a fixed housing 2 having discharge and suction pipes 3, 4. Outlets (O) are provided in the conical walls P 1. Volume 8 between cor4 d E SA S o o o o GO VJ

Description

it is sealed with a pus 2 and a rotor 1 with a seal 9. P 1 is sealed along the shaft 7. The suction pipe 4 of the housing 2 is located along the axis of rotation P 1 opposite the inlet 5 in the cover P 1. The presence of a seal 9 and a bottom cover at P 1 create two independent volumes interconnected through Ob. When P 1 rotates, a gas, such as air, begins to move with the walls of P 1 both inside and outside. When moving, near-wall

inner and outer layers. Developed boundary layers reach O6. Through O6, gas is sucked from the inner layer and injected (injected) into the outer one. There is no effect of otcoca-blowing. Due to the effect, an additional rarefaction appears inside P 1. Through the inlet 5, a suction starts from the volume 8, and into it through the suction pipe 4, the suction of the working fluid or gas from the evacuated container begins. 1 silt;

The invention relates to devices for transferring liquids, gases, for applying pressures and vacuum, can be used in chemical, aviation, engineering and other industries.

The purpose of the invention is to simplify the design by eliminating the separation chamber with the working fluid and the diffuser-confuser space in the apparatus body ....

The proposed pump is shown in the drawing.

The self-priming centrifugal pump has a hollow rotor 1 in the form of a truncated cone with a bottom in the lower part of a small diameter and a cover with an inlet 5 along the axis of rotation in the upper part of a larger diameter, placed in a fixed housing 2. The housing has a discharge pipe 3 and a suction pipe 4 located opposite the rotor inlet. Outlet openings 6 are located on the conical walls of the rotor. The rotor 1 has a seal 7 along the shaft, and the space 8 between the rotor and the housing is sealed with respect to the suction pipe 4 by the seal 9. The volume 8 is sealed by the seal 9, as well as the bottom and cover of the hollow rotor allows you to create two independent volumes inside the rotor and between the rotor and the housing. The volumes are interconnected by outlet openings 6 on the conical wall of the rotor.

Centrifugal self-priming pump operates as follows. As the rotor 1 rotates, gas, such as air, located in the internal volume of the rotor, begins to move along the walls of the rotor. As a result of the movement, a special wall layer of gas is formed - the boundary layer. This boundary layer is called inner. on the outside, the gas also moves along the wall and a similar layer forms - the outer boundary layer. Since the inner and

5 outer boundary. Layers are isolated from each other, they do not have a side mutual interaction either. The inner and outer boundary layers are interconnected only through the outlet 6 in the wall

0 rotor. The formed inner boundary layer approaches the holes 6 and through them begins to be removed, sucked off. In this case, injection-blowing through holes in the outer boundary

15 layer. A suction-blowing effect occurs, as a result of which the inner boundary layer is pressed against the walls and the outer layer expands. This creates an additional vacuum in the internal 0. volume of the rotor. As the gas is removed from the internal volume through the hole 6 in the wall through the hole. the pipe 4, which is connected to the highway, begins. sucked up, working fluid or gas in

5 as a result of the created vacuum, and through the inlet 5 in the rotor cover, the working fluid or basin enters the inner volume of the rotor. Then a similar process takes place, as at the beginning with

0 rotation of the rotor. - The liquid removed through the holes 6 in the wall, enters the external volume, loses part of the speed on the fixed wall of the rotor, while gaining pressure through the discharge

5, pipe 3 in the apparatus body enters the pressure working line.

The rotor can be made of any metal, as well as plastic and ceramic.

0 The rotor can be any body of revolution, for example, a paraboloid, a hyperboloid ,: a cylinder, etc., you only need to create

two separate volumes and have outlet openings on the walls of the rotor. ,

The pump housing can also be made of any metal, plastic or ceramic. The pump can be made in the form of a motor pump when placing the stator, the electric motor in the pump casing, and the rotor of the electric motor in the working element.

The simplicity of construction, the possibility of using cheap materials, the simplicity of operation, the simplicity of manufacturing technology, and the possibility of casting reduce the cost of manufacture and operation.

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Claims (1)

SUMMARY OF THE INVENTION A self-priming centrifugal pump comprising a fixed housing with suction and discharge nozzles and a rotor in the form of a hollow truncated cone having a bottom in the area of the smaller base, the suction nozzle being located along the axis of rotation of the rotor, characterized in that, in order to simplify the design , the hollow cone is provided with a wall in the upper part, an inlet is made in the rotor opposite the suction pipe, outlet openings are made on its conical surface, and the cavity between the rotor and housing sealed relative to the suction pipe ..