RU45235U1 - INSTALLATION FOR PRODUCING EGG POWDER - Google Patents

Abstract

The utility model is aimed at intensifying the drying process by increasing the driving force of the drying process (concentration difference) and increasing productivity, reducing specific energy consumption for moisture evaporation, and also reducing the loss of the final product. The technical task of the utility model is the optimal distribution and regulation of the flow of coolant and the dried material by changing the design of the device. The specified technical result is achieved by the fact that in the installation for the production of egg powder containing a vertical cylindrical drying chamber with a conical bottom and an upper vortex inlet of the drying agent, an axial pipe is installed in the upper part of the chamber for exhausting the spent drying agent, the nozzle and the discharge located in the lower part of the chamber a nozzle installed in the conical bottom of the housing, inside the drying chamber on the axial pipe for the exit of the spent drying agent is installed yc base downwards forming an annular gap with the drying chamber walls, the entrance into the axial exhaust conduit to exit the drying agent is situated above the base of said cone.

Description

The utility model relates to the food industry, and in particular to the technique of spray drying solutions and suspensions, namely to the production of dry food products, mainly egg powder, in particular, to devices for processing melange into egg powder and can be used in food processing, dairy, chemical , pharmaceutical, biological and other industries for drying liquid solutions of a similar consistency, with the aim of turning the latter into a powder or lowering their moisture.

A device for spray drying, including a cylindrical body with a conical bottom, in which the discharge device is located. A horizontal partition is made in the cylindrical part of the housing with openings closed by filters. Holes connect the upper and lower parts of the housing. A pipeline for supplying coolant is located in the center of the partition; an injector for spraying suspensions and liquids is placed in the pipeline. The upper part of the casing is connected to the exhaust pipe (see application WO 0074837, class B 01 J 2/16; B 01 D 1/18, from 2000).

The closest solution adopted for the prototype is a known spray dryer containing a vertical cylindrical drying chamber, a discharge cone, a rod with a nozzle located in the lower part of the chamber, and an upper vortex dryer inlet

gas, annular manifold, narrowing gas supply pipe for drying gas, located under the nozzle, horizontal and vertical pipes, gas distribution device, regulating damper and counterbody installed along the axis of the gas supply pipe narrowing and connected to it (see RF patent No. 2166713, class F 26 B 3/12 from 1999).

The disadvantages of the known devices include low productivity and drying efficiency.

The technical problem solved by the utility model is the optimal distribution and regulation of the flow of the coolant and the material to be dried by changing the design of the device.

The technical problem is achieved by the fact that in the installation for the production of egg powder, comprising a vertical cylindrical drying chamber with a conical bottom and an upper vortex inlet of the drying agent, an axial pipe installed in the upper part of the chamber for exhausting the spent drying agent, a nozzle and an unloading nozzle located in the lower part of the drying chamber a nozzle installed in the conical bottom of the drying chamber, according to a utility model, inside the drying chamber on an axial pipe for the exhaust ushilnogo agent installed cone base downwards forming an annular gap with the drying chamber walls, the entrance into the axial conduit for the exhaust gas outlet located above the bottom of said cone.

The presented drawing schematically shows the proposed device for the production of egg powder.

A device for the production of egg powder consists of a vertical cylindrical chamber 1 with a conical bottom. A cylindrical body 2 of smaller diameter communicating with it is installed in the upper part of the chamber, to which the nozzle 3 is tangentially connected to supply the heated drying agent and to communicate the last rotational movement in the chamber 1. In the center of the body 2, there is a coaxial pipe 4 for removal of the spent drying agent. On the pipeline 4, a cone 5 is fixed with its base down, forming an annular gap 6 between it and the inner wall of the cylindrical chamber 1. In the lower part of the chamber, coaxially with it, there is an upwardly directed nozzle 7 for spraying the material to be drained. In the lower part of the conical bottom of the chamber 1 there is a discharge pipe with a shutter 8 to remove dry powder.

A device for the production of egg powder works as follows. A drying agent enters the housing 2 through the nozzle 3 at high speed, which is pumped along the annular gap 6 into the drying chamber 1, where it forms a swirling flow of the drying agent, directed downward in a spiral. Changing its direction at the conical bottom of the chamber, the flow moves to its axis and, along the latter, to the pipe 4 for removal of the spent drying agent, through which it is discharged from the chamber. When the initial melange is sprayed with the nozzle 7 and its interaction with the drying agent, egg powder is formed, which due to the centrifugal field in the vortex stream of the drying agent is not last removed from the chamber 1 with the spent drying agent, but is retained in it.

In this design of the drying chamber 1, the dry drying agent moves down along the chamber wall, and the wet spent drying agent moves along the chamber axis in the form of a thin bundle, the diameter of which is comparable with the diameter of the discharge pipe 4 upward. Due to concentration differences, moisture diffuses from the center to the walls of the drying chamber and upward because the density of moist air is less than the density of dry air. The cone 5 prevents water vapor from leaving the spent spent drying agent in a fresh drying agent entering the dryer. This also contributes to the fact that the base of the cone 5 is located lower than the entrance to the discharge pipe 4. After the drying process, the obtained egg powder is unloaded from the chamber 1 through the discharge pipe with a shutter 8.

Thus, the installation, due to the presence of a cone in the drying chamber, makes it possible to make the drying process more intensive by increasing the driving force of the drying process (concentration difference) and more productive, reduce the specific energy consumption for moisture evaporation, and also reduce the loss of the final product.

Claims (1)

A plant for the production of egg powder, comprising a vertical cylindrical drying chamber with a conical bottom and an upper swirl inlet of a drying agent, an axial pipe for exiting the spent drying agent installed in the upper part of the chamber, a nozzle located in the lower part of the chamber, and an unloading nozzle installed in the conical bottom of the casing, characterized in that in the drying chamber on the axial pipe for the exit of the spent drying agent is installed a cone with the base down, forming to ltsevuyu gap with the drying chamber walls, and the entrance to an axial exit conduit for the exhaust of the drying agent is situated above the base of said cone.