SU1423807A1 - Torque flow pump - Google Patents

Abstract

The invention may be used in the design of pumping equipment for transporting inhomogeneous media with easily damaged bodies. The chain of the invention is to reduce damage to the pumped product and reduce wear on pump elements. In case 1 with suction and discharge nozzles 2 and 3, impeller 5 is mounted on shaft 4 with

Description

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1 | cim disk 6. The latter is separated from the working chamber 7 by a protective element in the form of a disk 8 with turbine blades NI 9 mounted on shaft 4. In the central part of the disk 6 there are 1 pump vanes 10, and the blades 9 are located opposite the latter to form a hydraulic clutch, which allows you to protect the paddle system of hydroperiod ™ dacha from contact with the pumped product and other foreign inclusions. In addition, with this

When the pump is run, the speed of rotation of the disk 8 is close to the speed of the pumped mixture, and this reduces the likelihood of damage to the pumped product. Impeller systems of the impeller and hydraulic couplings are protected from wear by switching on the pumped medium, which leads to an increase in the service life of the pump, lower reliability of the protective device and reduced labor costs for its cleaning due to low clogging, 1 or

one

The invention relates to pumping, in particular, to the design of vortex pumps, and can be used in the design of JHacocHoro equipment for conveying inhomogeneous media with easily bovine bodies: sugar beet potatoes, etc.

The purpose of the invention is to reduce damage to the pumped product and reduce wear on pump elements.

The drawing shows svobnovnih-: roar pump, longitudinal section.

The free-vortex pump contains; case 1 with suction 2 and pumping: 3 branch pipes and an impeller 5 f mounted on it on shaft 4. a driving disk 6 separated from the working chamber 7 by a protective element in the form of a disk B mounted on a shaft 4 with autonomous rotation and equipped with turbine blades 9 In the central part of the driving disk 6 wheels there are pump blades 10, and the turbine blades 9 are located opposite the latter to form hydraulic couplings. In disk 8, through channels 11 are completed,

Free vortex pump works as follows.

When the pump is operated, the pumped medium is heterogeneous through the suction inlet 2 enters the working chamber 1 of the housing 1, through the channels 11 part. the working fluid, separated from the pumped product by a disk 8 mounted on shaft 4, passes in

the flow part of the fluid coupling formed by the pump 10 and turbine 9 blades. As a result of the hydrodynamic interaction of the fluid flow occurring in the flow part of the fluid coupling, the protective disk 8 is rotated.

Performing the hydraulic drive of the protective device in the form of a hydraulic coupling located in the central part of the protective disk and the impeller hub protects the paddle transmission system from contact with the product being pumped and other foreign substances, thereby increasing the reliability of the protective device. Using the fluid coupling as a drive for the protective disc 8 allows it to be given a rotational speed different from the rotational speed of the impeller 5 and bring it closer to the speed of movement of the pumped mixture, which reduces the likelihood of damage to the pumped product on the disk. 8. The speed of rotation of the protective disk 8 depends on the mode of operation of the pump, i.e. on operating modes other than optimal, self-regulation of the rotational speed of the protective disk B occurs. In addition, the rotational speed of the protective disk 8 depends largely on the percentage of the pumped product in the liquid (it is very difficult to obtain a stable percentage of solid relative to liquid when hydrotransporting) . So, in the case of

The concentration of the pumped product increases in the power consumed by the turbine blades 9 of the hydraulic coupling by increasing the friction forces on the surface of the protective disk 8, which in turn leads to an additional decrease in the frequency of rotation of the protective disk 8. This phenomenon also reduces the likelihood of damage to the pumped product , since in this case the speed of rotation of the protective disk 8 is as close as possible to the speed of movement of the product being pumped. When the percentage concentration of the product being pumped changes in the direction of decreasing, there is an increase in the speed of its movement in the pump working chamber 7, while friction against the surface of the protective disk 8 decreases and, consequently, its rotation speed increases.

This double self-regulation of the rotational speed of the protective element, depending on the mode of operation of the pump and the percentage concentration of the pumped product, ensures its high safety. With

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This impeller impeller system. 5 and hydraulic couplings are protected from wear by switching on the pumped medium, which leads to an increase in the pump life, an increase in the reliability of the protective device and a reduction in the labor costs for its cleaning due to low clogging at a sufficiently high level of pump efficiency.

Claims (1)

Invention Formula A free vortex pump comprising a housing with suction and discharge nozzles and an impeller mounted on it with a drive disk, separated from the working chamber by a protective element in the form of a disk mounted on the shaft with the possibility of autonomous rotation and equipped with turbine blades, characterized in In order to reduce damage to the pumped product, and to reduce the wear of pump elements, pump blades are installed in the central part of the wheel drive, and turbine blades are located opposite the the latter with the formation of hydraulic clutch.