JPS5818155Y2 - drying equipment - Google Patents

Description

[Detailed description of the invention] The present invention comprises a drying chamber in which a transport carrier to which a substance to be dried is attached is brought into direct contact with hot air while being filled and lowered, a mechanism for separating the dry substance from the transport carrier, and a mechanism for separating the dry substance from the drying The present invention relates to a drying device equipped with a lifting device and the like for returning a carrier to a room.

According to an apparatus that attaches a substance to be dried to a carrier and dries the substance by countercurrent contact with hot air, the drying surface area of the substance to be dried can be increased by the carrier, and the drying surface area of the substance to be dried can be increased by the carrier. It is possible to allow the hot air for drying to pass through well, and to perform the drying process efficiently. Regarding this type of drying process, the technology shown in Japanese Patent Publication No. 47-27281 has been known for a long time. ing.

However, in the conventional technology as shown in the above publication, when attaching the dry substance to the transport carrier, the liquid substance to be dried is caused to flow out from a conduit and supplied to the upper layer of the transport carrier, or the liquid coat is supplied to the upper layer of the transport carrier. Because a method such as immersing the transport carrier in a container storing the dry substance was used, the transport carrier, which was located near the point where the liquid substance to be dried was supplied and had a large amount of the liquid substance to be dried, In order to achieve better drying, the drying surface area cannot be said to have been sufficiently expanded until the thickness of the adhered layer of the substance to be dried changes to a thin film due to contact with other transport carriers, etc. In this respect, there remained a problem in terms of drying efficiency.

The purpose of this invention is to further improve the drying efficiency of this type of drying equipment by atomizing the material to be dried into atomized atomized particles and adhering it to the transport carrier from the initial stage of adhering the material to the transport carrier. There is.

The characteristic structure of the drying apparatus according to the present invention is that a hot air supply path is connected to a drying chamber in which a space for filling transport carriers is formed at the bottom of the space for filling, and a hot air supply path is connected to a lower part of the space for filling the transport carrier, and At the same time, a scraping device is installed in the lower part of the filling space to forcibly discharge the carrier carriers in the drying chamber. A separation mechanism for separating the substance from the dry substance is provided in series, and a lifting device is provided for returning the transport carrier after it has been separated from the dry substance by the separation mechanism to above the filling space in the drying chamber. The present invention is characterized in that a nozzle for spraying the substance to be dried onto the carriers to be transported in the filling space is provided in the drying chamber above the point where the carriers are returned by the device, and this configuration provides the following effects.

In other words, it is similar to the conventional method in that the material to be dried adhering to the transport carrier filled in the drying chamber can be effectively dried by countercurrent contact with hot air, but in particular, the material to be dried can be dried using a nozzle. Since the method involves spraying a substance and adhering the atomized substance to be dried to a transport carrier,
The drying surface area of the substance to be dried can be sufficiently increased from the initial stage of adhesion, and the drying efficiency at this initial stage of adhesion can be significantly improved compared to conventional methods.

Furthermore, since the nozzle is arranged to effectively utilize the space above the area filled with the transport carrier in the drying chamber and to make the space above the space a spray drying zone, the hot air flows. The sprayed material to be dried can be preheated in the upper space where heat transfer conditions are good, and in this respect, the drying efficiency can be further improved.

Embodiments of the present invention will be described below with reference to the drawings.

The drying device includes a drying chamber 4 in which a space is formed for filling a large number of transport carriers A, a device 3 for supplying hot air into the drying chamber 4, and a device 3 for supplying hot air into the drying chamber 4. Carrier A...
A device 2 for supplying a substance to be dried to..., a separation mechanism 8 that separates the dried transport carrier A... from the dry substance adhering to it, and the separated transport carrier A .

Then, in the drying chamber 4, the hot air supply path 3a of the hot air supplying device 3 is connected to the lower part of the space for filling the transport carrier A... loaded into the drying chamber 4, A hot air discharge path 3b is connected above the filling space, and at the bottom of the filling space, the transport carrier A in the drying chamber 4 is forcibly moved to the bottom center of the drying chamber 4. A scraping device 6 is provided for scraping the carrier A to the side and dropping the carrier A to the outside of the drying chamber from an outlet 6a provided at the center of the bottom thereof.

In the upper part of the drying chamber 4, a nozzle 9 of the device 2 for supplying the substance to be dried is located above the filling space and above the carrier return point by the lifting device 1.
... are provided at predetermined intervals in the circumferential direction of the drying chamber 4, and the material to be dried is sprayed onto the surface layer of the filled transport carrier A. The structure is such that the fine particles of the transport carrier A are attached to the transport carrier A.

At a lower outside position of the drying chamber 4, there is a transport carrier A supporting the dried substance in series with the discharge port 6a.
A peeling device 5 for peeling off the dry substance from the dry substance, and a separation mechanism 8 connected thereto, and a separation mechanism 8 that allows only the peeled dry substance to leak out, thereby separating the dry substance and the transport carrier A...
A separation mechanism 8 is provided to separate the .

The dry substance that leaked through the separation mechanism 8 was pneumatically conveyed to the cyclone collector 7, and the dry substance was separated from the transport carrier A.
.

[Brief explanation of drawings]

The drawing is a schematic overall vertical sectional view showing an embodiment of the drying device according to the present invention. 1... Lifting device, 3a... Hot air supply path, 3b... Hot air discharge path, 4... Drying room, 6... Scraping device, 6a... Discharge port, 8... Separation mechanism, 9... Nozzle,
A...Transportation carrier.

Claims (1)

[Scope of utility model registration request] A hot air supply path 3a is connected to the lower part of the filling space of the drying chamber 4 in which a space for filling the transport carrier A is formed, and hot air is discharged above the filling space. In addition to connecting the passage 3b, a scraping device 6 for forcibly discharging the transport carriers A in the drying chamber 4 is provided at the lower part of the filling space, and a carrier discharge port of the scraping device 6 is provided. 6a is connected with a separation mechanism 8 that separates the transport carrier A... and the dry substance attached thereto, and after the transport carrier A has been separated from the dry substance by the separation mechanism 8, the transport carrier A...
. A drying device characterized in that it is provided with a nozzle 9 for spraying a substance to be dried onto a transport carrier A located therein.