JPS5939472Y2 - Crushing fluidized bed equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to a fluidized bed apparatus equipped with a crusher.

Conventionally, as a known fluidized bed device, the Utility Model Publication No. 45-2629
6″+ There is a device described in the publication.

In this known device, a ventilation chamber is provided at the bottom of a fluidized bed chamber having a material supply 1-1 and a material discharge "" through a perforated plate, and the circumferential wall of the fluidized bed chamber is cylindrical and a rotating shaft is provided at the center of the fluidized bed chamber. , a large number of stirring blades are provided at the lower end of this rotating shaft6.
However, such known devices are unable to process food particles or agglomerates (5 to 15
Those containing a relatively large amount of water (about mmφ) and solidifying into large lumps when water is released, and those that melt and soften when heated to high temperatures, such as sugars and resins, and solidify when cooled. In the case of materials that are easy to form, the crushing effect is not sufficient, and coarse particles remain, or coarse particles are further formed, resulting in a force amplification port and no longer forming a fluidized bed.

Furthermore, in the method of introducing the coarse particles discharged from the fluidized bed to a classifier or crusher outside the system, temperature control is difficult, resulting in various drawbacks such as a decrease in drying efficiency and increased power of equipment and machinery.

The first objective of this (r) invention is to solve the above problems, and by incorporating a crusher, the formation of a fluidized bed and crushing are performed at the same time, thereby crushing coarse particles. The purpose of the present invention is to provide a crushing type fluidized bed apparatus that can simultaneously cool and dry materials.

The details of this invention will be explained below based on the attached drawings.

In the figure, reference numeral 1 denotes a fluidized bed chamber consisting of a cylindrical peripheral wall 2, a top plate 3, and a perforated bottom plate 4.

A material supply 1-15 is provided on a part of the top plate 3, and the upper part of a rotating shaft 7 driven by a drive device 6 consisting of a motor, a speed reducer, etc. is rotatably attached to the center of the top plate 3.

A plurality of arms 8 are fixed radially to the lower end of the rotating shaft 7, and a plurality of stirring blades 9 are fixed to the lower side of the arms 8.

Most of the stirring blades 9 are oriented to stir the material while scraping it outward, but a small number of stirring blades in the opposite direction may be provided to prevent the material from moving outward too quickly.

10 is a ventilation chamber provided at the bottom of the porous bottom plate 4. A gas introduction 111 is provided on that side, and this introduction 1111 is connected to the ventilation chamber (not shown).
1? Connect to the blower's discharge [1, i, il].

D is a crusher provided in a part of the peripheral wall 2.

As shown in Figs. 2 and 3, this crusher has a rectangular crushing chamber 1 formed inside a part of the peripheral wall 2 that protrudes outward.
It consists of a horizontal rotating shaft 13 that is movably mounted inside the rotating shaft 13 and a plurality of crushing blades 14 that are fixed on the outside thereof. .

Reference numeral 16 denotes a porous cover provided from the G side of the crusher to the fluidized bed indoor side (J), and a coarse particle pipe 1117 is provided at the indoor side -1 end of this porous cover leading into the crusher ■.

The bottom of this crusher also has a porous bottom plate 4. A ventilation chamber 18 is provided at the bottom of the bottom plate 4, and a duct 19 is provided at the bottom of this chamber 18.
and connect this evening I.19 to the data I. which passes through the discharge of the machine (1r1), and the gas flowing into the inlet (111), 1rI5, is The air flows into the crushing chamber 12 through the duct 19 and the blowing chamber 18.

20 is a blower, and the vibe 2 leads to its discharge II"']
1 is connected to the duct 19.

This air blowing amount of $420 is used to send strong air when the flow in the crushing chamber 12 is poor or to send cold air to the crushing chamber 12.

22 is provided adjacent to the fluidized bed chamber 17. In the fluidized bed chamber,
Both chambers 1 and 22 are separated by a weir plate 23 and a perforated partition plate 24 such as a wire mesh following the weir plate f41).
A ventilation chamber 26 is installed at the bottom of the fluidized bed chamber 22 through a porous bottom plate 25. communicate.

Further, a plurality of partition plates 28 are provided in the fluidized bed chamber 22, and a gap is provided between the lower end of the partition plates 28 and the porous bottom plate 25, and a gap is also provided between the partition plates 28 and the top plate 31 of the fluidized bed chamber 22. Set up a space.

Further, a weir plate 29 is provided at the end of the fluidized bed chamber 22, and the upper part thereof is used as a material discharge +130, and the top plate 31 of the fluidized bed chamber 22 is
A gas outlet 132 is provided in the center.

Next, to explain its operation, the material to be dried is supplied from the supply ``15'', is introduced while being stirred by the stirring blade 9 on the porous bottom plate 4, and is introduced from the supply ``11'' through the ventilation chamber 10 by the porous bottom plate 4. The material is dispersed and becomes fluidized by the gas flowing into the fluidized bed chamber 1 to form a fluidized bed, and the material is brought into contact with the gas and dried.

In this state where a fluidized bed is formed, coarse-grained [-
The coarse particles entering the crushing chamber 12 from 117 are equal to the amount of gas sent from duct 19! Due to the action of the i-flow and the collision of the crushing blades 14 rotating at the same time, the crushed stones are crushed and dispersed by the porous cover 16. The crushed and dispersed material of a certain particle size or less passes through the holes of the porous cover 16 and forms a fluidized bed with other particles.

The particles thus dried are transported to the porous partition plate 2 along with the gas.
4 and then move to the fluidized bed chamber 22.

The materials in the fluidized bed chamber 22 are dispersed by the porous bottom plate 25 from the gas introduction +127 through the ventilation chamber 26, and the gas flowing into the fluidized bed chamber 22 forms a fluidized bed.

The material q+-;+, which has been left in the fluidized bed chamber 22 to form a fluidized bed and is further dried, moves sequentially under each partition plate 28 and is sequentially discharged [flowing in the direction of +30 and being discharged. go.

In addition to the above-mentioned embodiments, a plurality of fluidized bed chambers 1 having crushing Ki=I) are installed. Then, the material V-; In some cases, the liquid may be passed through the fluidized bed chamber 1.

-1 In addition, for materials with softening properties or materials that tend to form silica on the surface, gas may be introduced to form a fluidized bed.
In this case, cool air is sent from the blower 20 to the duct 19. It is better to raise the gas temperature in the crusher by F.

In addition, a porous partition plate 24 is installed on the weir plate 231-, and the mesh of this porous partition plate 24 [1,! The size of the diameter of the through hole is determined based on the product size, and is designed to prevent particles larger than this from passing through.

This invention not only stirs the materials forming the fluidized bed as described above, but also introduces them into the crusher to crush coarse particles, so it is possible to handle food additives or high-moisture materials such as malic acid. Even products with agglomerating, granulating, and solidifying properties can be dried in 1 minute with the desired particle size.

In addition, when cold gas is introduced into the gas sent to the crusher as shown in the example, the temperature of sugars, resins, etc.
Even for materials that solidify after being melted and softened by heating, or materials that melt and assimilate on the surface, they can be sufficiently dried and crushed by supplying low-temperature gas to the crusher to obtain fine particles.

[Brief explanation of the drawing]

The first field is a front view showing one embodiment of the fluidized bed device of this invention, the second figure is the first cross section [if on the glA-A line], and the third figure is the B of Fig. 2. 4 is a vertical 1ri" side view taken along line C-C in FIG. 3. 1... Fluidized bed chamber, 2... Peripheral wall, 4...
...Porous bottom plate, 5...Material supply [21.7
1c-j, 1 rotating shaft, 9... Stirring blade, 10... Air blowing chamber, 12... Frame disassembly chamber,
13... Horizontal rotating shaft, 14... Crushing blade, 16... Porous cover, 17... Coarse particle [] I, 23... ...Weir plate, D...Crusher, 24...Porous partition plate.

Claims (1)

[Scope of utility model registration request] A ventilation chamber is provided at the bottom via a porous bottom plate, the peripheral wall is cylindrical, and the lower end of a rotating shaft provided at the center is used to stir the material on the porous bottom plate. In a fluidized bed chamber equipped with blades, a crusher with a plurality of crushing blades attached to the outside of a horizontal rotating shaft is installed near the bottom of the partially extended portion of the peripheral wall, and the L of this crusher is A coarse particle hole IN leading to the crusher is provided at the lower end of the porous cover facing toward the inside of the fluidized bed room from the side, and a part of the fluidized bed room is covered with a weir plate and a porous partition plate on the L side. A crushing type fluidized bed device connected to the next room through.