JPH0239551Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) By replacing and attaching parts, it can be used as a spray drying device for spraying a liquid substance into a high-temperature air stream and instantaneously drying it, or as a powder drying device. The present invention relates to an improvement in a spray drying/granulating device for suspending bodies and aggregating and granulating them by spraying a binder solution thereon.

(Prior Art) As a conventional spray drying/granulating apparatus, there are, for example, those shown in FIGS. 3 and 4.

FIG. 3 shows a spray drying device, which consists of a lower frame 1, a side frame 2 provided on the lower frame 1, and an upper portion attached to the side frame 2 so as to be able to come into contact with and separate from the lower frame 1. frame 3
It is composed of. The lower frame 1 has a chamber 4 which is approximately cylindrical and has upper and lower ends open.
The chamber 4 is fixed to the lower frame 1 by bringing the upper frame 3 into contact with the upper end 4a of the chamber 4. A spray nozzle 5 for spraying a liquid substance is provided at the upper end 4a of the chamber 4.
is open, and the upper end 4a of the chamber 4 communicates with an upper feeding passage 6 provided in the upper frame 3. A heating passage member 7 is connected to and communicates with the upper supply passage 6, and a supply port 8 is provided at the lower end of the passage member 7, and air is supplied to the supply port 8. A feed pipe 9 is connected thereto. A heater 10 is disposed between the connection end of the heating passage member 7 with the upper feeding passage 6 and the feeding port 8, and heats the air to be fed to a set temperature to turn it into hot air.

On the other hand, the lower end 4b of the chamber 4 can communicate with the lower feeding passage 11 provided in the lower frame 1, but in the case of this device, the lower end 4b of the chamber 4 and the lower feeding passage 11 A shielding plate 12 is interposed between the lower end portion 4b and the lower feeding passage 11 to prevent communication between the lower end portion 4b and the lower feeding passage 11.

The air fed from the feed pipe 9 is heated to a set temperature by the heater 10 and turned into hot air.
3 and becomes a high-temperature airflow within the chamber 4. When a liquid substance is sprayed from the spray nozzle 13 into this high-temperature air stream, the sprayed fine droplets are dried to become a fine powder, and this fine powder is discharged from the outlet 14 of the chamber 4 and collected.

Next, in order to turn the spray drying device into a granulating device, the chamber 4 is connected to the outlet 14 as shown in FIG.
A filter 16 is disposed at the upper end 15a of the chamber 15, and the heating passage member 7 is replaced with an exhaust port member 18 and connected to the upper feeding passage 6.

On the other hand, a heater 1 is installed inside the lower feeding passage 11.
Connect the heating passage member 7 in which the number 0 is installed in reverse. The shielding plate 12 is replaced with a perforated plate 17, and the perforated plate 17 is interposed between the lower end 15b of the chamber 15 and the lower feeding passage 11.

Chamber 1 filled with sample (not shown)
5, hot air heated by a heater 10 is fed through a microporous plate 17, and the sample is suspended in the air by this hot air. A binder is sprayed onto this sample from the spray nozzle 19, and the sample gradually becomes larger and more spherical to form particles.

(Problems to be solved by this invention) However, in the case of such a conventional spray drying/granulation device, in order to use it as a spray drying device, a heating passage member 7 is attached to the upper feeding passage 6; In order to use it as a granulating device, the passage member 7 must be installed in the lower feeding passage 11 in an inverted manner. In this way, the heating passage member 7 is connected to the upper feeding passage 6 or the lower feeding passage 1.
There was a problem in that it was actually quite difficult and complicated to change to 1 and connect.

(Means for Solving the Problems) Therefore, in order to solve such problems, this invention has a chamber that is open at both the upper and lower ends and a spray nozzle is opened at one of the upper and lower ends; An upper feeding passage and a lower feeding passage are connected to both the upper and lower ends of the chamber so as to be able to send hot air, and an upper feeding passage and a lower feeding opening are connected to the upper feeding passage and the lower feeding passage, and an upper feeding passage and a lower feeding opening are connected to the upper and lower ends of the chamber. a heating passage member provided with a heating passage member, a heater disposed in the heating passage member between the upper feeding port and the lower feeding port and heating the air to be fed to a set temperature to turn it into hot air; A feed pipe that can be connected to either the opening or the lower feed port and feeds air to the heating passage member, and when this feed pipe is connected to the upper feed port, the upper feed passage and the upper end of the chamber, and when the feed pipe is connected to the lower feed port, communication between the lower feed passage and the lower end of the chamber is blocked.

(Function) In order to turn the spray drying device into a granulation device, instead of reversing the heating passage member attached to the upper feeding passage and attaching it to the lower feeding passage as in the past, it is necessary to attach it to the lower feeding passage. The connected feed pipe may be removed and connected to the upper feed port.

(Example) This invention will be explained below based on the drawings. FIGS. 1 and 2 are diagrams showing an embodiment of the spray drying/granulating apparatus according to this invention.

FIG. 1 shows a spray drying apparatus, which includes a lower frame 21, a side frame 22 provided on the lower frame 21, and a side frame 22 provided on the lower frame 21.
It is composed of a lower frame 21 and an upper frame 23 that is provided so as to be able to come into contact with and be separated from it. A glass chamber 24 having a substantially cylindrical shape and open upper and lower ends is mounted on the lower frame 21, and the chamber 24 is opened by bringing the upper frame 23 into contact with the upper end 24a of the chamber 24. and is fixed to the lower frame 21. A spray nozzle 25 for spraying a liquid substance is provided at the upper end 24a of the chamber 24.
is opened through the current plate 26 in which many fine holes are formed, and the upper end 2 of the chamber 24 is opened.
4 a communicates with an upper feeding passage 27 provided within the upper frame 23 .

On the other hand, the lower end 24b of the chamber 24 can communicate with the lower feeding passage 28 provided in the lower frame 21, but in the case of this device, there is a shielding plate between the lower end 24b and the lower feeding passage 28. 29 is interposed to prevent communication between the lower end portion 24b and the lower feeding passage 28. The upper feeding passage 27 and the lower feeding passage 28 communicate with a substantially cylindrical heating passage member 30 provided in the side frame 22. An upper feed port 31 and a lower feed port 32 are provided in the upper and lower portions of the side wall of the heating passage member 30, respectively, and a feed port is provided in the heating passage member 30 between the upper feed port 31 and the lower feed port 32. A heater 33 is provided that heats the supplied air to a set temperature and turns it into hot air. A closing lid 34 is attached to the upper feeding port 31, and a closing lid 34 is attached to the upper feeding port 31.
A feed pipe 35 for feeding air is connected to 2, and this air is fed to the heating passage member 30.

The air fed from the feed pipe 35 is sent to the heater 33
The hot air is heated to a set temperature and turned into hot air, which is rectified by a rectifier plate 26 provided at the upper end 24a of the chamber 24 and fed into the chamber 24 to become a high-temperature air current. When a liquid substance is sprayed from the spray nozzle 25 into this high-temperature air stream, the sprayed fine droplets are dried and become a fine powder, which is discharged from the outlet 36 of the chamber 24 and collected.

Next, in order to turn the spray drying device into a granulating device, the chamber 24 is connected to the outlet 3 as shown in FIG.
Replace with chamber 37 which is not provided with 6.
A filter 38 is disposed at the upper end 37a of the chamber 37. Further, between the upper end portion 37a of the chamber 37 and the upper feeding passage 27, a discharge passage member is provided with a shielding portion 39 for shielding communication between the chamber 37 and the upper feeding passage 27, and a discharge port 40 is provided. 41 is inserted. A spray nozzle 42 for spraying a binder is opened in the chamber 37 . On the other hand, the shielding plate 29 is replaced with a microporous plate 43 in which a large number of microscopic holes are formed, and this
and the lower feeding passage 28. The closing lid 34 attached to the upper feed port 31 is removed, and the feed pipe 35 connected to the lower feed 32 is also removed. A feed pipe 35 is connected to the upper feed port 31, and a closing lid 34 is attached to the lower feed port 32.

Chamber 3 filled with sample (not shown)
7, hot air heated by the heater 33 is sent through the microporous plate 43, and the sample is suspended by the hot air. A binder is sprayed onto this sample from a spray nozzle 42, and the sample gradually becomes larger and more spherical to form particles.

In this way, in order to turn the spray drying device into a granulation device, the heating passage member attached to the upper feeding passage 27 is not reversed and attached to the lower feeding passage 28 as in the conventional case, but the lower feeding passage member is The feed pipe 35 connected to the feed port 32 may be removed and connected to the upper feed port 27, and therefore, this replacement is simple and easy.

(Effects of the invention) As explained above, according to this invention, the supply port is connectable to either the upper or lower supply port of the heating passage member and supplies air to the heating passage member. Since the pipe is equipped, in order to convert the spray drying device into a granulator, remove the feed pipe connected to the lower feed port and connect it to the upper feed port, and in order to convert the granulator into a spray dryer. All that is required is to remove the feed pipe connected to the upper feed port and connect it to the lower feed port, and therefore, this replacement is simple and easy.

[Brief explanation of drawings]

1 and 2 are diagrams showing one embodiment of the spray drying/granulation device according to this invention, and FIG. 1 is a sectional view of this device as a spray drying device, and FIG.
The figure is a cross-sectional view of this device as a granulation device. Figures 3 and 4 are diagrams showing conventional spray drying/granulation equipment. Figure 3 is a cross-sectional view of this equipment as a spray drying equipment, and Figure 4 is a sectional view of this equipment as a granulation equipment. FIG. 24, 37... Chamba, 24a, 37a...
Upper end, 24b, 37b...lower end, 25, 42
...Spray nozzle, 27... Upper feeding passage, 28...
...Lower feeding passage, 29... Shielding plate, 30... Heating passage member, 31... Upper feeding port, 32... Lower feeding port, 33... Heater, 35... Feeding pipe, 39...
...Shielding part.

Claims (1)

[Scope of utility model registration request] A chamber whose upper and lower ends are open and a spray nozzle is opened at one of the upper and lower ends, an upper feeding passage and a lower feeding passage which are connected to both the upper and lower ends of the chamber so as to be able to feed hot air; a heating passage member that communicates with the feeding passage and the lower feeding passage and is provided with an upper feeding port and a lower feeding port; and a heating passage member disposed between the upper feeding port and the lower feeding port, A heater that heats the air to be fed to a set temperature and turns it into hot air, and a feed pipe that can be connected to either the upper feed port or the lower feed port and feeds air to the heating passage member. When this feed pipe is connected to the upper feed port, communication between the upper feed passage and the upper end of the chamber is blocked, and when the feed pipe is connected to the lower feed port, communication between the upper feed passage and the upper end of the chamber is blocked. A spray drying/granulating device characterized in that communication between the chamber and the lower end of the chamber is shielded.