RU87506U1 - VIBRATION DRYER - Google Patents

Abstract

A vibration dryer containing a heat-insulated drying chamber with loading, unloading devices, exhaust air outlet openings, a control panel with temperature and humidity sensors, heating, air supply and vibration conveyor devices, characterized in that the vibration conveyor is made in the form of rectangular perforated trays, consisting of a bottom, sides, diffusers for pumping heated air through the bottom and studs designed to secure the trays in pairs under variable m symmetric angle to the frame of the drying chamber, equipped with an electromagnetic vibrodrive.

Description

The invention relates to a device for drying bulk materials and may find application in agriculture and the food industry mainly for drying small fruits and berries.

Known dryers for drying bulk materials, such as grain (RF Patent No.2018075 "Vibratory dryer", class C15 F26B 17/30), containing a rectangular shaft with rotary lateral and centrally inclined blown shelves fixed with hinges on its walls, forming two cascades for downward movement in countercurrent with the coolant, a device for turning shelves, consisting of a system of cables, winches and blocks.

However, they are characterized by low reliability due to the operation of the hinge, stops and cables, as well as the need for their frequent adjustment, in addition, they have increased complexity and metal consumption.

The closest in technical essence and the achieved result is a vibration dryer (RF Patent No. 2290582 "Vibration dryer", CL C2 F26B 17/30), containing a thermally insulated chamber equipped with a vibrator with heat supply and exhaust pipes, an air supply device, an air heating device , vibration conveyor made in the form of horizontal plates with a radial slot, mounted on a vertical pipe and attached to a vibrator, temperature and humidity sensors located in the chamber between the plates connected to the inputs of the master device, the outputs of which are connected to heaters, a fan and a vibrator.

The disadvantage of this apparatus is the movement of the product on a horizontal screw plane from top to bottom, the product moves at different speeds, which leads to the sticking of highly moist materials. In addition, in this dryer, air is supplied through a vertical pipe above the product, which causes uneven drying (the product closer to the pipe dries faster).

The aim of the invention is to reduce the cost and improve the quality of the drying process of fruits and berries.

This goal is achieved by the fact that a useful model is proposed in which the vibration conveyor of the drying chamber is made in the form of rectangular perforated trays mounted on a frame with a variable angle, heated air is pumped directly under each tray.

The essence of the proposed device is illustrated by the scheme, where in Fig.1 is a view of the device from the side; figure 2 diagram of a rectangular perforated tray device.

The vibration dryer (Fig. 1) contains a thermally insulated drying chamber 1 with a loading 2, a discharge 12 device, exhaust air outlet 13, a control panel 10 with temperature and humidity sensors 9, a device for heating 8, air supply 7 and a vibration conveyor located inside the chamber, which consists of a frame 4, equipped with an electromagnetic vibrodrive 11, rectangular perforated trays 3 are mounted on the frame.

Rectangular perforated trays of the drying chamber (figure 2) consist of sides 3, studs 2 and diffusers 4 for supplying heated air through the perforated bottom 1 under the product. The trays are mounted on studs in pairs with symmetric variable tilt angles in the slot 5 (Fig. 1) on the frame 4 and are fixed with a nut 6.

Vibration dryer works as follows. The wet product, through the loading device, enters the upper perforated tray of the drying chamber, set at an angle to the direction of product movement, where it moves with the help of vibrational vibrations generated by the electromagnetic vibrator to the next perforated tray installed at a symmetrical angle (with respect to the upper perforated tray). After passing the second tray, the movement process is repeated along the next pair of perforated trays. The number of trays should be calculated taking into account the drying time and product speed. Finished, dried, product is removed through a discharge device mounted on the lower perforated tray.

Heated air comes from the heating and supply device using a diffuser through the perforated bottom of each product tray, which leads to a more uniform and intensive drying of the product. Exhaust air leaves through openings in the thermal insulation of the drying chamber.

The control panel with sensors provides temperature and humidity control inside the drying chamber and controls the device for heating and air supply.

Claims (1)

A vibration dryer containing a heat-insulated drying chamber with loading, unloading devices, exhaust air outlet openings, a control panel with temperature and humidity sensors, heating, air supply and vibration conveyor devices, characterized in that the vibration conveyor is made in the form of rectangular perforated trays, consisting of a bottom, sides, diffusers for pumping heated air through the bottom and studs designed to secure the trays in pairs under variable m symmetric angle to the frame of the drying chamber, equipped with an electromagnetic vibrodrive.