RU2435078C2 - Device for clarification of oil of hydro-systems - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device is designed for clarification of oil of hydro-systems of hydraulic drive. The disclosed here device can be implemented in hydraulic systems of land vehicles, hydraulic equipment for various branches of technical equipment, and also for clarification of industrial turbine and electro-insulating oils. The device consists of pipelines for supply and withdrawal, of a heater and of centrifugal pump arranged on the pipeline for supply of oil. Also, it is equipped with a blade pneumatic pump on a driven shaft positioned coaxially in one case and with a drum on an axle on external surface of which there are arranged radial and diagonal blades, while its internal space is alternately divided with disks with orifices on ends and disks with orifices in centre.

EFFECT: reduced hydro-dynamic losses at increased rotation velocity of movable elements of device.

1 dwg

Description

The invention relates to hydraulic equipment, in particular to a device for cleaning oil hydraulic hydraulic systems. The proposed device can be used to service the hydraulic systems of ground transportation vehicles, hydraulic equipment used in various fields of technology, as well as for the cleaning of industrial turbine and electrical insulating oils.

For the purification of oils from mechanical impurities and water, methods of exposure to force fields, using porous partitions and using thermophysical and mass transfer phenomena, have become widespread. The use of centrifugal forces accelerating the process of cleaning hydraulic oils is the basis for centrifuges, separators and hydrocyclones of various designs. For example, the PSM 1-3000 installation and its modifications for cleaning electrical insulating oils from water and mechanical impurities are known (see P.I. Shishkin and I.V. Bray, “Regeneration of Used Petroleum Oils”, Moscow: Chemistry, 1970) . Known centrifugal oil cleaners containing a housing and a rotor with nozzles (see ed. St. USSR No. 659168, 1979, ed. St. USSR No. 301162, 1969, ed. St. USSR No. 258272, 1967, patent RU 2285826 C1, F15B 21/04, F04D 29/22, B01D 33/00, C10G 31/00, 2006). Centrifugal cleaners are widely used in the production of Germany, Sweden, Japan, Russia (SOG stands) and other countries.

The closest technical solution to the claimed is a device for cleaning hydraulic oil containing pipelines for supplying and discharging, a heater installed on the pipeline for supplying oil, a centrifugal pump made in the form of two disks with concentric rings placed on them, a turbine wheel located in the lower part of the shaft a centrifugal pump, an adjusting device located in the upper part of the shaft of the centrifugal pump, the shaft being made with channels for supplying oil, a pump placed on the pipeline de supply of oil into the cavity of the turbine wheel (see. Patent RU 2349801 C1, F15B 21/04, 2009 Bull. №8).

The disadvantage of a device for cleaning hydraulic oil is a significant increase in hydrodynamic resistance with increasing speed of a centrifugal pump and a turbine wheel, which leads to an increase in energy consumption and a decrease in the efficiency of the oil cleaning process.

The technical result is a decrease in hydrodynamic losses with an increase in the frequency of rotation of the moving elements of the device.

The technical result is achieved by the fact that the hydraulic oil purification device comprises inlet and outlet pipelines, a heater and a centrifugal pump installed on the oil supply line, coaxial in one housing of a vane pneumatic pump located on the drive shaft and placed on the drum axis, on the outer whose surfaces are located radial and diagonal blades, and its internal space is divided by disks with holes at the edges and disks with holes in the center, alternating between fight.

The inventive device for cleaning hydraulic oil differs from the prototype described in patent RU 2349801 C1, F15B 21/04, in that it is equipped with a rotary pneumatic pump located coaxially in one housing, located on the drive shaft, and placed on the axis of the drum, on the outer surface whose radial and diagonal blades are located, and its internal space is divided by disks with holes at the edges and disks with holes in the center, alternating between each other.

Thus, the claimed device for cleaning hydraulic oil meets the criterion of "novelty."

Comparison of the claimed technical solution (a device for cleaning hydraulic oil) not only with the prototype, but also with other technical solutions in this and related fields revealed technical solutions containing features similar to those distinguishing the claimed technical solution from the prototype. It is known to use vane pneumatic pumps to create an air flow, as well as the use of gas turbine rotors, in which the turbine blades allow the energy of the gas flow to be converted into rotational motion of the rotor. In the claimed technical solution, a vane pneumatic pump creates a stream of air that drives the drum, on the outer side of which there are radial and diagonal vanes. Air, in this case, is a kinematic link that transmits movement from the air pump to the drum. This allows, due to the difference in the velocities of the air flow in the outlet section of the pump and at the inlet of the air flow in a narrower space between the housing and the drum, to ensure the rotational speed of the drum is greater than the rotational speed of the shaft of the pneumatic pump. Compared with the prototype, in which the drive of the cleaning device is carried out by a stream of oil, in the claimed technical solution, the operation of the cleaning device is provided by a stream of air, which reduces the negative work of the friction forces.

Based on the foregoing, we can conclude that the proposed set of distinctive features meets the criterion of "significant differences", because it has acquired a new property, which consists in reducing the hydrodynamic resistance while increasing the rotation frequency of the moving elements of the cleaning device, which allows to reduce the energy intensity and increase the efficiency of the oil cleaning process.

The invention is illustrated in the drawing, where figure 1 shows a diagram of a device.

The inventive device comprises a housing 1, in the left cavity of the housing 1 there is a vane pneumatic pump 2, and in the right cavity of the housing 1 coaxially with a vane pneumatic pump 2 on the axis with end holes 3 there is a drum 4, on the outer surface of which there are radial blades 5 and diagonal blades 6, and its internal space is divided by disks with holes at the edges 7 and disks with holes in the center 8, which alternate with each other. In addition, the device has an oil supply pipe 9 with a heater 10 and a pump 11 sequentially arranged on it, an oil supply pipe 12 from the pump 11 to the left end hole of the axis 3 with a throttle 13 located on it, an oil drain pipe 14 from the right end hole of the c axis end holes 3.

The inventive device for cleaning hydraulic oil works as follows.

When the rotary vane pneumatic pump 2 rotates, the air flow is supplied to the inner part of the housing 1 and enters the radial blades 5 and the diagonal blades 6 located on the outer surface of the drum 4, as a result of which there is a torque that drives the drum 4, which rotates on the axis 3 .When the rotary vane pneumatic pump 2 rotates, the pump 11 rotates at the same time, which delivers the hydraulic oil through the throttle 13 through the pipe 12 to the left end openings of the axis 3, through which it enters the inside nyuyu drum cavity 4, divided discs with holes at the edges 7 and discs with holes in the center 8, by alternating between them. The flow of hydraulic oil moving along a complex path between the disks with holes at the edges 7 and the disks with holes in the center 8 in the rotating drum 4 is affected by centrifugal force, under which mechanical impurities will be deposited on the inner surface of the drum 4. From the inner space of the drum 4 hydraulic oil is discharged through the right end hole of the axis 3 through line 14.

The frequency of rotation of the drum 4, on the outer surface of which there are radial blades 5 and diagonal blades 6, depends on the air flow rate supplied by the vane pneumatic pump 2, which increases with a narrowing of the free space between the housing 1 and the drum 4, so the rotation frequency of the drum 4 will be greater the rotational speed of the vane air pump 2. The vane air pump 2 and the drum 4, on the outer surface of which there are radial vanes 5 and diagonal vanes 6, form a pneumatic mechanical system, which can work as a cartoonist.

The quality of cleaning increases with a decrease in the speed of movement of oil along a zigzag path through the cavity of the drum 4. The throttle 13 allows you to change the speed of movement of hydraulic oil through the cavity of the drum 4 depending on the required quality of oil cleaning.

The heater 9 allows you to increase the temperature of the hydraulic oil and, thereby, reduce its viscosity, which improves the deposition efficiency of mechanical impurities due to centrifugal forces.

Thus, the use of the claimed technical device allows to increase the frequency of rotation of the moving elements of the device without a significant increase in hydrodynamic losses.

Claims (1)

A device for cleaning hydraulic oil containing pipelines for supplying and discharging, a heater and a centrifugal pump installed on the pipeline for supplying oil, characterized in that it is equipped with a rotary pneumatic pump located coaxially in one housing, located on the drive shaft and placed on the axis of the drum, on the outer surface of which there are radial and diagonal blades, and its internal space is divided by disks with holes at the edges and disks with holes in the center, alternating between the battle.