SU638307A1 - Device for transferring food liquids - Google Patents

Description

The invention relates to the field of the dairy industry, namely to devices for pumping milk and similar liquids from 1X liquids.

A device for pumping pshnevnyh liquids, including a shell with an impeller, a lid with a suction and discharge piping, a device for sealing the impeller, an environmental wheel, made in the form of a rotating chamber, and an electric motor .IJ The disadvantage of this device is the use of wearing seals elements of this or that construction, which prevent the penetration of pumped milk from the working cavity to the outside (into the electric motor), which reduces the operational s pumps and technical parameters. In addition, in some operating modes of the pumps, air is drawn in from the atmosphere through sealing devices and enters the pumped milk.

The chain of the invention is increased durability and reliability in operation,

This is comprehended by the fact that in the proposed pumping device. npiiBOAHNmH the camera is equipped with a non-tactile damsam with directional blades located between them, while the diameter of one of the other jets is different by the amount that allows the discharge of jlia. pipelines / valves installed, blocked with an electric motor.

FIG. 1 shows schematically a device for pumping food liquids; paapesj in FIG. 2 shows section A-A in FIG. one.

The device to be showered contains an electric motor 1, a housing 2 with a lid 3 having nozzles 4 and 5. An impeller 7 and a half-open chamber 8 are located on the shaft b of the electric motor 1, inside which are mounted disks 9 and 1 O with 6 directions 5 using paddles 11. Working cavity 12 between discs 9 and 10 are connected to a reduced pressure zone. The shaft 13 has a sleeve 13, the gap between the inner surface of which and the turning of the shaft 6 have a gap 14. A normally closed valve interlocked with an electric motor is installed on the suction line. A seal 15 is interposed between the roof 3 and the body 2 to prevent leakage. The device for pumping works as follows. After switching on the electric motor 1, the valve interlocked with the electric motor and installed on the suction line opens; The milk enters the pumping and pumping device under pressure through the nozzle 4 into the injection line. At the same time, a very small part of the pumped milk (about 0, 3%) penetrates through the open annular gap 14 and is thrown into the half-open chamber 8. Here the liquid table that does not reach the peripheral openings of the disk 9 creates a constant hydraulic shutter due to the immersion of the disk 10. Thus, the working cavity 12 is completely isolated from the atmosphere, which excludes air leakage and its penetration into the pumped milk under certain operating modes of the device. When the liquid column in chamber 8 increases and the distortion portion of the disk 1O is immersed in the liquid, then it will flow into the reduced pressure zone by the hydrodynamic pressure generated by the rotating liquid. When the device is stopped, an electromagnet (or other system) valve interlocked with the pump electric motor and installed on the suction line near the nozzle 5 activates 74 1-2 seconds before the device stops, stopping the access of milk to it. During this time, the fluid located in the housing 2 and in the nozzle 5 to the valve is removed through the pressure pipe. After stopping the pump, a check valve (or one such as that on the suction line), mounted on the discharge pipe near the pipe 4, blocks the flow of fluid into the device. The described device with a hydraulic shutter without sealing pipes may be applicable to other pumps of various types and designs. The formula of the invention. A device for pumping penic liquids, mainly dairy liquids, including a casing with an impeller, a cover with suction and discharge pipes, a device for sealing the impeller from the environment, made in the form of a rotating chamber, and an electric motor, in order to increase durability and reliability in operation, the camera is equipped with fixedly mounted discs with guide vanes located between them, while the diameter of one of them exceeds the diameter of another by an amount that ensures the discharge of excess liquid into the impeller cavity, and valves interlocked with an electric motor are installed on the suction and discharge piping. Sources of information taken into account in the examination: 1. USSR author's certificate N9 303108, cl. In O4B 7/08, 1970.