JPS6241574A - Ventilating flow drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention is an improvement in the airflow direction of a ventilation dryer.

(Prior art and object of the present invention) Ventilation flow dryers have the advantage of high drying efficiency because they pass high-speed air through the gaps between the particles that make up one material layer, but uneven drying can occur if the external ventilation is uneven. It also has the disadvantage of being easy.

Figure 5 shows an example of a box-type ventilation dryer that is currently widely used, in which the air from blowers a and si is heated by heater b, and the air is heated by blower ports d and 5) provided in various parts of the blow duct c). leh e
The material particles loaded on the tray e are ventilated between the particles, and the air is passed from the air passage g in the lower part of the tray e to the lower part of the tip side of the duct C to the blower a.
1 In this model, the air on the blowing side tends to go to the top A of the duct C, and the suction side is close to the suction part of the blower and is easily sucked in, so the air is returned to the base B of the duct C. Because the wind does not flow much, there is a risk that the materials loaded on the trays e disposed in various parts of the tortoise drying chamber may dry unevenly.

For example, average / m / in the cross-sectional direction of the loaded material on the tray
When designed to vent BeC, at the top of the duct, /, ! ; yp/ sea, o at the base;
This results in variations such as Sge8ec.

(Structure of the present invention) The present invention provides a method for forming a plurality of injection holes on the lower surface of a material layer housed in a drying chamber, and drawing in a blowing duct whose base is connected to an air blower outlet and a heater. The structure of the present invention is explained with reference to the drawings. Figure 1 is a front view of the first embodiment of the ventilation dryer of the present invention; Figure 2 is a plan view;
FIG. 3 is a right side view.

In the drawing, 1/ is the drying room with a door attached to the front of 1-
Vacant rooms 3a%b are arranged side by side on one side, and one of the vacant rooms 3a is equipped with a thermometer, a manhole S, etc.

Several shelves are installed inside the drying room, on which trays 6 made of wire mesh, perforated plates, etc. and loaded with drying materials are placed.
A blowing duct 7 having a large number of nozzle holes g in its lower surface is drawn above each tray mounting portion.

// is a blower, its outlet //IL is a heater/31
It is connected to the base a of the blowing duct 7 through the feed duct/co, one empty chamber, and the branch duct/da 7aq.

Reference numeral 13 denotes an air passage formed below the tray B loaded with the dry material, and this passage 15 is connected to the suction port //1) of the blower // via the return duct 1)/4 for the other empty chamber 3b. It is made by letting Note that in the figure, 1 indicates an air supply port, and 22 indicates an exhaust port.

In the second embodiment of the present invention shown in FIG. 4, the blower outlet //a is connected to the blowing duct through the heater/31 empty chamber 3b, and the air passage /S is connected to the branch duct a through the external empty chamber 3a. Although the air blower is returned to the suction port //b of the blower, the other configuration is the same as that of the first embodiment.

Note that the blowing duct F can also be connected to the suction port //1) of a blower and used as a suction duct.

(Function/Effect) The ventilation dryer of the present invention, like the conventional machine shown in Fig. 5, advances drying by passing hot air blown out from the blowing duct through the interparticles of the drying material layer, and humidifies the drying process. An appropriate amount of air is discharged from the exhaust port, and fresh air corresponding to this amount is supplied from the air supply port 21. However, in conventional machines, a large amount of air tends to flow at the front of the blow duct. On the other hand, in the case of the present invention, the wind speeds at the top, middle, and base of one blowing duct are almost balanced, and there is no variation in the ventilation of one material layer, and there is no risk of drying unevenness.

[Brief explanation of drawings]

Figure 1 is a front view of the first embodiment of the ventilation dryer of the present invention, Figure 2 is a plan view, Figure 3 is a right side view, Figure 4 is a front view of the first embodiment, Figure 5 is FIG. 2 is a front view of a conventional box-type ventilation dryer. g: Nozzle //: Blower //&: Air blower: Suction port /3: Heater IS: Air passage Figure 2 Figure 3

Claims (3)

[Claims] (1) A blowing duct with a number of injection holes in the lower surface and a base connected to the outlet of a blower is drawn into the upper part of the drying material layer housed in the drying chamber, and the lower part of the material layer is used as an air passage to blow the air into the drying chamber. A ventilation dryer comprising an end on the same side as the duct base connected to the suction port of the blower. (2) Two empty rooms, one inside and one outside, are installed on one side of the drying room, and the air outlet of the blower is connected to the blow duct through the outside empty room and a branch duct, and the air passage is connected to the blower through the inner empty room. The ventilation flow dryer according to claim 1, which is connected to a suction port. (3) Two empty chambers, one inside and one outside, are installed on one side of the drying room, and the blower outlet is connected to the blow duct through the inner empty chamber, and the air passage is connected to the blower suction port through the outer empty chamber. A ventilation flow dryer according to claim 1, which is connected.