JPS601811Y2 - Pellet cooling separation equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a pellet cooling separation device.

In particular, a string-like synthetic resin extruded in a molten state from a pellet die is cut into fixed lengths at the exit of the pellet die to form pellets, and a cyclone is used in the middle of the air transportation means to transport the pellets to a cooling machine. A plurality of spray nozzles connected to a cooling water introduction pipe and a compressed air introduction pipe are provided at the lower end of the exhaust pipe in the cyclone, and the cyclone separates the transport air from the pellets, and the spray nozzle supplies atomized cooling water. The purpose is to inject pellets and cool the pellets more efficiently, thereby reducing the size of the subsequent cooler and improving the throughput.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Reference numeral 1 denotes a cyclone, which consists of a disc-shaped cover plate 2, a cylindrical part 3 connected to the lower surface of the cover plate 2, and an inverted conical part 4 whose upper end is connected to the lower end of the cylindrical part 3.

5 is an inlet pipe for introducing the fluid to be treated into the cyclone 1;
It opens into the cylindrical portion 3 at a position above the cylindrical portion 3 and eccentrically in the radial direction from the axial center of the cylindrical portion.

Reference numeral 6 denotes a punching plate (an example of a separation plate) for cooling water separation provided in parallel with the conical part 4, the upper end of which is connected to the lower part of the cylindrical part 3, and the lower end forming the outlet part 7 of the cyclone 1. It is connected to the lower end of the conical part 4 via an inner cylindrical part 8.

That is, the lower part of the cyclone 1 has a double wall structure, and a space 9 is formed between the punching plate 6 and the conical part 4.

Further, the outlet portion 7 of the inner cylinder portion 8 is communicated with a cooler (not shown).

Reference numeral 10 denotes a saucer portion provided on the outer periphery of the lower end of the conical portion 4, forming a groove portion 11.

Further, reference numeral 12 denotes a plurality of discharge ports provided near the lower end of the conical portion 4, which communicate the space portion 9 and the groove portion 11.

Reference numeral 13 denotes an exhaust pipe for transporting fluid, which is provided through the center of the cover plate 2 of the cyclone 1.

The upper part of the exhaust pipe 13 has an opening 14 at a position above the cover plate 2.
The punching plate 6 communicates with the atmosphere through the punching plate 6, and its lower part opens near the upper end of the punching plate 6.

15 is a cooling water introduction pipe, and 16 is a compressed air introduction pipe.

Each of these introduction pipes 15 and 16 is introduced into the exhaust pipe 13 through the opening 14 at the upper end of the exhaust pipe 13, and its lower end is located at the lower part of the exhaust pipe 13, respectively.

A plurality of spray nozzles 17 are attached to appropriate locations on the lower end of the inner peripheral wall of the exhaust pipe 13 with bolts and nuts 19 via brackets 18.

Each of the spray nozzles 17 is connected to a cooling water introduction pipe 15 and a compressed air introduction pipe 16 via a flexible tube 20.

Further, the spray opening of the spray nozzle 17 is configured to spray toward the punching plate 6.

Reference numeral 21 denotes each of the above-mentioned introduction tube support plates.

In such a configuration, a pellet shaped portion (not shown)
The high-temperature pellets and air transported by the pneumatic transport means enter the cyclone 1 through the inlet pipe 5 and move downward while turning as shown by arrow A.

When the high temperature pellets that have moved downward pass near the lower end of the exhaust pipe 13, they are cooled by sprayed cooling water from a plurality of spray nozzles 17 provided at the lower end of the inner circumferential wall of the exhaust pipe 13.

Also, the air that has passed through this part is transferred to the opening 1 of the exhaust pipe 13.
4 to the atmosphere.

Then, the pellets cooled by the cooling water are separated from moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6, and then the pellets are separated from the moisture by the punching plate 6.
Move to a cooler.

Water that has entered the space 9 between the punching plate 6 and the conical portion 4 is discharged into the groove portion 11 through a plurality of discharge ports 12 provided near the lower end of the conical portion 4.

It goes without saying that the holes in the punching plate 6 are smaller than the pellets.

Further, the separation plate is not limited to a punching plate, and a screen or the like may be used.

As described above, according to the pellet cooling separation device of the present invention,
Cooling water is sprayed onto the pellets at a high temperature in a cyclone installed in the middle of the air transport means, so the pellets can be effectively cooled and the throughput of the subsequent pellet cooler can be greatly improved. Moreover, the pellet cooler can be downsized.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG. 2 is an enlarged view of its main parts. 1...Cyclone, 6...Punching plate, 13...Exhaust pipe, 15...
Cooling water introduction pipe 16...Compressed air introduction pipe, 17
・・・・・・Spray nozzle.

Claims (1)

[Scope of utility model registration request] In a hot-cut pellet forming apparatus, a cyclone is provided in the middle of the air transport means from the pellet-shaped part to the cooling part, a plurality of spray nozzles are provided at the lower end of the exhaust pipe provided in the cyclone, and each spray nozzle is A pellet cooling and separating device, characterized in that a cooling water inlet pipe and a compressed air inlet pipe are connected to each other, and a separation plate for separating the cooling water is provided inside the inverted conical part of the cyclone.