SU933123A1 - Apparatus for centrifugal spraying of liquids - Google Patents

Description

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The invention relates to the field of chemical technology and can be used in the chemical, pharmaceutical and other industries for spraying solutions and suspensions. in spray dryers.

A device is known for centrifugally spraying solutions and suspensions with a cup-shaped disk having nozzles for exiting a solution or slurry of 1J.

This design has a device for uniformly distributing the feed solution or suspension, which is an annular chamber disposed above the disk which is coaxial with it and has openings in the bottom. The solution or suspension through the dispenser falls inside the disc pan and, exiting the nozzles, is sprayed by the centrifugal force that occurs when the disc is rotated at a significant peripheral speed. For the drive, a complex and metal-intensive mechanism is used, due to the large

revolutions are complicated assembly and balancing of rotating parts. The reliability of operation of such devices is also insufficient, since the solution or suspension after the unit is stopped can clog channels and nozzles, which will require additional maintenance.

It is also known a device for centrifugal spraying of a liquid, comprising a hollow die with a tangentially mounted heat transfer inlet nozzle, a liquid supply nozzle and a conical flow distributor for heat transfer fluid 2j. .

Such a device is closest to the invention in its technical essence and the achieved result.

This device will not provide effective spraying, since the spraying is only in the area of the holes made in the disk, the implementation of which is technologically difficult. Because of the hole

to exit the coolant are located on the upper wall of the disk, and not on the side, the tangential supply of the coolant does not provide the expected effect, and the reliability of the device is low, since the sprayed body can get through the holes into the disk.

The aim of the invention is to increase the efficiency and reliability of the device.

This goal is achieved by the fact that a device for centrifugal spraying a fluid, containing a floor with a tangentially mounted heat transfer inlet pipe, a liquid supply nozzle and a conical heat carrier flow distributor, is equipped with a impeller freely mounted in the disk cavity with openings for the passage of heat carrier and a hollow shaft with a hole in the side wall connecting the impeller to the distributor. In addition, the diameter of the distributor exceeds the diameter of the disk.

Such an embodiment of the device makes it possible to achieve an effective spray of Grastvor fluid or suspension) due to the combination of two methods: pneumatic — due to the expiration of the coolant from the holes in the hollow shaft and mechanical — due to the rotation of the distributor.

Due to the fact that the diameter of the distributor is made larger than the diameter of the disk, the solution or suspension inside the disk is excluded, therefore, the device is reliable in operation.

FIG. 1 shows a device for centrifugal spraying a liquid, a general view; in fig. 2 - the same, top view.

A device for centrifugal spraying of a liquid contains a hollow disk 1 with a tangentially mounted pipe 2 introducing a heat transfer medium, a liquid supply nozzle 3, and a conical distributor 4 of a heat transfer fluid.

In addition, the device is equipped with an impeller 5 freely mounted in the cavity of the disk 1 with holes 6 for the passage of the coolant and a hollow

shaft 7 with holes 8 in the side wall connecting the impeller 5 to the distributor, the diameter of which exceeds the diameter of the disk 1.

The device works as follows.

Through the nozzle 2, the coolant is supplied to the impeller 5, causes it to rotate and exit.

through the openings 6 and 8 under the distributor 4 located above the impeller 5. From the nozzle 3 comes solution or suspension, which spreads on the distributor k into a thin film and, receiving a significant rotational movement, flows down a conical surface downwards where it is dispersed by a circular horizontal jet of compressed heat carrier emanating from the holes 8.

Thus, the design of the device for centrifugal spraying of solutions and suspensions provides high spray efficiency and reliability in operation.

Claims (2)

1. A device for centrifugal spraying of a liquid, containing a hollow disk with a tangentially installed heat transfer inlet pipe, a liquid supply nozzle and a conical flow medium distributor, characterized in that it is equipped with an impeller freely mounted in the disk cavity for the passage of coolant and a hollow shaft with holes in the side wall connecting the impeller to the distributor. 2. Device But Clause 1, characterized in that the diameter of the distributor exceeds the diameter of the disk. Sources of information taken into account in the examination 1.Lykov M.V. Drying in the chemical industry. M., Himi, 1970, c, 249. 2. USSR author's certificate lj ° 737735, cl. B 05 B 3/08, F 26 V 3/12, 1978 (prototype).