JPS622173Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vertical vibration conveyance device for powder and granular materials, and particularly to a conveyance device having a sieving mechanism.

For example, when producing powdered or granular products such as welding flux, the crushed raw materials are sieved to a desired particle size range. In this sieving, the sieving method is determined according to the characteristics of the powdered or granular materials, and the sieving is carried out using independent sieving machines. Meanwhile, before and after the sieving process, powdered or granular material storage tanks and the like are provided, and it is inevitable that the powdered or granular materials must be transported to and from these tanks, and an appropriate transport method is determined according to conditions such as the characteristics of the powdered or granular materials, the transport capacity, and the transport height difference.

Belt conveyors or bucket lifts have been used as general means of transporting powder and granules, but in recent years vertical vibrating conveyors have been developed which are effective in preventing adhesion, spillage, dusting, and pulverization of powder and granules. started to be adopted. FIG. 1 shows a typical example of this vertical vibration conveyor, in which a long cylindrical support 3 is placed vertically on a base 1 via a spring 2, and a spiral trough is attached to the outer periphery of the support 3. 4 is wound, and a vibration driver 5 is installed at the bottom of the support column 3. 6
is a saucer that communicates with the lower part of the trough 4. Vibrator 5
By operating the trough 4 and vibrating the trough 4 arranged at a low angle, the powder and granules are conveyed vertically, and at the same time, the conveyance distance and residence time in the trough can be increased, allowing cooling and drying of the powder and granules. It is also possible to do this.

In this way, in the conventional manufacturing process of powder and granular materials, the sieving and conveying steps are arranged independently, so a feeder or a conveyor or the like is essential for communicating between the two steps. Therefore, the process becomes complicated, a sufficient space is required in terms of layout, and there are also large disadvantages in terms of equipment costs and maintenance.

The present invention has been made to eliminate such disadvantages of the conventional technology, and aims to simplify the process by performing the sieving of powder and granular material and its vertical transport almost simultaneously, rather than separately. The device of the present invention for this purpose is characterized in that at least one sieve section is provided at the end of the spiral trough so as to be concentric with the cylindrical support.

The details of the present invention will be explained below based on embodiments shown in the drawings.

FIG. 2 shows an example of a vertical vibration conveyance device according to the present invention. As shown in the figure, a vertical cylindrical column 13 is mounted on a base 11 via a spring 12, a spiral trough 14 is wound around the outer periphery of this column 13, and a vibrator 15 is provided at the bottom of the column 13. 1
It is almost the same as shown in the figure. The apparatus shown in FIG. 2 is characterized in that a two-stage sieve section 17 is installed so as to overlap the top of a saucer 16 provided at the lower end of the vertical cylinder 13.

FIG. 3 is an exploded perspective view of the sieve section 17,
As shown in the figure, the sieve portion 17 is detachably attached concentrically to the vertical cylinder 13. The upper sieve part 17A is attached to surround the outside of the spiral trough 14, and the lower sieve part 17B is connected to the lower end of the trough 14 via a guide or the like. For example, the mesh openings of the sieve screens in the two sieve sections are larger in the upper stage than in the lower stage. Of course, the sieve section 17 may have one stage or three or more stages, and the sieve section may be provided not only at the lower end of the spiral trough 14 but also in communication with the upper end of the trough (in the case of downward vertical conveyance). .

Furthermore, a chute 18 for charging powder and granular material is provided near and above the upper sieve section 17A, a chute 19 for discharging the powder and granular material remaining on the sieve screen is located on the side of the sieve section 17A, and a chute 19 located below A chute 2 is provided on the side of the saucer 16 for discharging the powder particles that have fallen from the lower sieve section 17B.
0 is provided for each.

Next, the operation of the conveying device of the present invention will be explained.

The sieve part 17A is passed through the input chute 18 from the previous process.
The powder and granules charged above are vibrated in the circumferential direction around the vertical cylindrical support 13 by the drive of the vibrator 15, so that the sieve screen 17A
The particles remaining on the sieve screen are discharged from the discharge chute 19. In addition, the sieve part 17
The granular material that has been sieved at A and falls onto the next sieve section 17B is similarly sieved. and the sieve part 1
The powder remaining on the sieve part 7B enters the trough from the lower end of the spiral trough 14 and is conveyed upward by the vibration action, while the receiving tray 16 below the sieve part 17B
The powder and granular material that has fallen is discharged from the discharge chute 20. The granular material having a desired particle size, which is sent upward while circulating around the spiral trough 14, moves from the upper end of the trough to the next process.

Note that the spiral trough 14 cools and dries the powder and granules during transportation, and in addition to the cooling effect due to natural dissipation, forced draft cooling is also possible by partially modifying the sieve section. In this case, for example, the steps of receiving powder and granules from a dryer in the previous step, cooling → sieving → vertical conveyance can be integrated, and the equipment can be further simplified.

As explained above, according to the vertical vibrating conveyance device of the present invention, since the sieve portion is integrally arranged, the same vibrating drive device as for vertical conveyance can be used to transport powder and granules before or after vertical conveyance. can be continuously screened and separated. Therefore, it is possible to omit the sieving machine that was conventionally arranged independently, which reduces equipment costs and has great advantages in terms of space and maintenance.

[Brief explanation of drawings]

FIG. 1 is a front view showing a typical example of a conventional vertical vibration conveyor, FIG. 2 is a front view showing an embodiment of the conveying device according to the present invention, and FIG. 3 is an exploded perspective view of the sieve section in FIG. 2. It is. 11...Base, 12...Spring, 13...
Vertical cylindrical strut, 14... spiral trough, 15
... Vibration drive device, 16 ... saucer, 17 ... sieve section, 18 ... input port, 19, 20 ... discharge chute.

Claims (1)

[Scope of utility model registration request] In a vertical conveyance device for powder and granular material, which is configured by providing a spiral trough on the outer periphery of a vertical cylindrical column with a vibration driver installed at the bottom thereof, at least one sieve section communicating with an end of the spiral trough is provided in the A vertical vibration conveyance device for powder and granular materials characterized by being installed concentrically with a cylindrical support.