JPS6362676B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a vibratory crushing and drying apparatus for drying a slurry material to be dried into powder.

[Prior Art] Devices for drying objects to be dried while vibrating them are known, for example, in Japanese Patent Laid-Open No. 57-87681, etc., but these conventional devices vibrate objects to be dried from above to below. Since drying is carried out using hot air while moving the product through multiple stages, it takes a long time to dry, and the equipment becomes large, which increases equipment costs and operating costs, resulting in high costs. Furthermore, when drying a material to be dried in the form of a slurry containing a large amount of water, there is a drawback that the material becomes lump-like, making it impossible to perform a good drying process.

In order to eliminate such drawbacks, the applicant has
An input port for materials to be dried and an outlet for dried materials are already provided on the top lid, a perforated plate is placed horizontally inside, and a number of hot air outlets are drilled in the space below the perforated plate. A container is formed by providing a supply pipe, and a material to be dried in the form of a slurry is introduced from the supply port onto a perforated plate, and the container is vibrated three-dimensionally to crush the material to be dried into powder. A vibration characterized in that hot air is blown upward from a porous plate from a hot air outlet, and the material to be dried, which has been crushed into powder, is blown upward by the wind pressure, dried, and then discharged from an outlet. A method of crushing and drying is proposed. (Refer to Japanese Unexamined Patent Publication No. 188785/1985) [Problems to be Solved by the Invention] However, since the above method is configured to blow hot air upward from the supply pipe, the hot air does not pass through the perforated plate. The hot air is discharged as it is through the outlet, and the hot air is not effectively utilized, resulting in low thermal efficiency.

[Means for Solving the Problems] The present invention provides a method in which hot air blowing holes of a supply pipe installed on a closure plate of a container are bored on the side of the outer periphery of the supply pipe so that hot air blows out along the upper surface of the closure plate. It was established.

[Function] The hot air blown out from the outlet of the supply pipe heats the closing plate to a high temperature, raising the temperature inside the container and maintaining the atmosphere inside the container at a high temperature, making the thermal efficiency extremely high.

[Example] In Fig. 1, 1 is a cylindrical base, 2 is a plurality of coil springs provided at appropriate intervals on its upper surface, and 3 is a container supported via the coil springs 2. be. An electric motor 6 is fixed vertically at the center of the lower part of the container 3 with a mounting ring 4 and a mounting rod 5, and a weight 8, 8 is removably attached, and the container 3 is configured to be given three-dimensional vibrational motion by driving the electric motor 6 to rotate it and by the action of the weights 8, 8 provided eccentrically on the rotating shafts 7, 7. do.

The container 3 has a bottomed cylindrical lower body 3b having a bottom plate 3a and a cylindrical upper body 3d having an inverted funnel-shaped top lid 3c, stacked on top of each other, and the flanges on the upper and lower edges of each are connected to the connecting band 9. Therefore, they are integrally formed by being fastened together. The outer periphery of a perforated plate 10 is fixed inside the upper body 3d, a closing plate 11 is fixed to the bottom of the lower body 3b located below the perforated plate 10, and a hot air supply pipe 12 is provided on the upper surface of the closing plate 11. ing. As shown in FIG. 2, the perforated plate 10 has a circular plate with a large number of ventilation holes 13 having a diameter of about 7 m/m, and radially raised protrusions 14 on the upper surface.

As shown in FIG. 3, the supply pipe 12 has three straight pipes arranged so as to cross the lower body 3b, and one end of each straight pipe protrudes outward from the side wall of the lower body 3b to form an air supply port. We are gathering all together on 15th. The lower half of the supply pipe 12 is fixed by being embedded in an arcuate recess 16 formed in the closing plate 11 as shown in FIG. 4. The supply pipe 12 has hot air blow-off holes 17 along the closing plate 11 on the outer periphery side of each straight pipe.
A large number of holes will be drilled. Further, the top lid 3c of the upper body 3d is provided with an input port 18 for the material to be dried at the center position, and a discharge port 19 for the dried material near the outer periphery.

FIG. 5 shows the layout of the entire system when using the apparatus of the present invention. In the figure, 20 is a hopper into which the material to be dried in the form of slurry is input, and 21 is connected to the input port 18 and is connected to the hopper 20. A hose for pumping the material to be dried into the container 3 by driving a motor pump 22, 23 a hot air generating furnace for sending hot air of 350°C to 400°C to the air supply port 15, and 24 a dust collector connected to the discharge port 19. Show each.

According to the device of the present invention, the electric motor 6 is driven to rotate and the weights 8 provided on the rotating shafts 7, 7,
The motor pump 22 is driven while applying three-dimensional vibration motion to the container 3 by the action of the hopper 2.
The material to be dried in slurry form in 1 is continuously supplied onto the perforated plate 10, while the hot air generator 23
Hot air of .degree. C. to 400.degree. C. is supplied to the supply pipe 12, and the hot air is blown out from the blow-off hole 17. The hot air is blown out along the closing plate 11, heating the closing plate 11 to a high temperature, and is blown upward from the ventilation hole 13 of the perforated plate 10 while raising the atmosphere inside the container 3 to a high temperature.

The material to be dried supplied onto the perforated plate 10 is prevented from falling through the ventilation holes 13 by the pressure of the hot air.
First, the heat retained by the perforated plate 10 and the hot air rapidly sublimate and dehydrate the water contained therein, and at the same time it aggregates into a nodule shape, and then this nodule moves in a swirling manner due to the three-dimensional vibration of the container 3. perforated plate 10
The particles are sequentially crushed into fine pieces by the collision with the radial raised ridges 14 or by the turbulence generated within the container 3.
By repeating this crushing action, the slurry-like material to be dried becomes a fine powder, which is then passed from the blowing hole 17 to the ventilation hole 1.
3, the air is blown upward by the pressure of the hot air and floats in the container 3, and is brought into active contact with the hot air. , more uniform drying is promoted. Then, only the powder that has been completely dried and has a reduced specific gravity is sequentially discharged from the discharge port 19 together with the hot air, and is collected by the dust collector 24.

The supply pipe 12 is provided with an opening 25 of a constant width in the closing plate 11 as shown in FIG.
The lower half of the supply pipe 12 can be fitted and fixed thereto, or it can be formed into an inverted U-shape in cross section as shown in FIG. The purpose can also be achieved by configuring the blow-off holes 17 to be formed along the lines.

[Effects of the Invention] As detailed above, according to the vibratory crushing and drying apparatus according to the present invention, the material to be dried is finely crushed and dried by the three-dimensional vibration of the container and the blowing of hot air. Since the drying material is discharged from the outlet provided in the top lid of the container by using the wind pressure from hot air blowing out, it is possible that the material to be dried contains a lot of moisture and clumps, like a slurry-like material to be dried. It is possible to dry it into a fine and uniform powder state without any lump-like agglomerates even if it has properties.

In addition, the hot air blown from the supply pipe is effectively used to heat the closing plate to a high temperature, speed up the temperature rise inside the container, and maintain the atmosphere at a high temperature, increasing thermal efficiency and reducing drying costs. can.

[Brief explanation of drawings]

The figures relate to an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line X-X of FIG.
The figure is a sectional view taken along the Y-Y line in Fig. 1, Fig. 4 is an enlarged sectional view showing how the supply pipe is attached to the closing plate, Fig. 5 is a layout of the entire system, and Figs. 6 and 7 are FIG. 7 is an enlarged cross-sectional view of another embodiment showing how it is attached to the supply closing plate. 1... Base, 2... Coil spring, 3... Container,
3c... Top lid body, 10... Porous plate, 11... Closure plate, 12... Supply pipe, 14... Raised protrusion, 17
...Blowout hole, 18...Input port, 19...Outlet port.

Claims (1)

[Claims] 1. A container is supported on a base via several coil springs, and a three-dimensional vibration generator is installed in the center of the lower part of the container, and an input port for materials to be dried and a drying process are installed in the top lid of the container. In addition to providing a discharge port for the finished material, a perforated plate with protruding protrusions on its upper surface is installed horizontally inside the container, and a closing plate is provided below the perforated plate to close the bottom of the container, and the upper surface of the closing plate is provided with a closing plate that closes the bottom of the container. In addition to installing a supply pipe with numerous hot air outlets,
1. A vibratory crushing and drying device characterized in that the blow-off hole is provided on the outer circumferential side of the supply pipe so that the hot air is blown out along the upper surface of the closing plate.