JPS5917876Y2 - Compost rapid production device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a rapid composting device.

When treating sewage sludge, composting has been considered from the standpoint of pollution prevention and effective resource utilization. Conventional equipment for this is a batch system in which a fixed amount of material is stored and stirred, or a continuous screw system. There is a system in which the material is sent out while being turned around on a conveyor, but the former method is inefficient, and the latter method provides insufficient ventilation.

The present invention is an attempt to improve the latter and to propose a rapid composting device that eliminates the above-mentioned drawbacks.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The rapid composting device of the present invention will be described below with reference to illustrative drawings.

Reference numeral 1 denotes a horizontally suspended outer cylinder, 2 an inlet for dehydrated sludge provided above one end of the outer cylinder 1, and 3 an outlet provided below the other end.

Reference numeral 4 denotes a hollow shaft provided concentrically and rotatably within the outer cylinder 1, and is provided with a screw-shaped feed blade 5 around the periphery.

Reference numeral 6 designates a variable speed electric speed reducer for rotational drive provided on one end side of the shaft 4, and reference numeral 7 designates a conveyor that reaches a collection area provided below the discharge port 3.

A large number of air supply holes 8 are provided on the circumferential side of the shaft 4,
Air can be supplied into the shaft 4 from the end opposite to the variable speed electric speed reducer 6 by a blower.

Further, on the outer edge of the feed blade 5, cut-back pieces 9 that slide against the inner circumference of the outer cylinder 1 and protrude toward the feed side are provided at equal intervals.

This cut-back piece 9 is moved to the input port 2 by the rotating feed blade 5.
This is to follow the rotation of the feed blade 5 to lift the cake 10 sent from the side to the discharge port 3 side and perform stirring and turning, and it can also be provided on the surface of the feed blade 5 in the radial direction.

Reference numeral 11 denotes exhaust holes arranged in parallel in the axial direction of the upper end of the outer cylinder 1, which communicate with an exhaust pipe 12 that reaches the deodorizing device.

In the above configuration, the sludge cake 10 introduced into the outer cylinder 1 from the inlet 2 is turned back by the turning piece 9 while being rotated by the screw-shaped feed blade 5, which gently keeps the sludge cake 10 at a constant speed and with a constant accumulation thickness. It is sent out to the discharge port 3 side.

During this time, air is supplied into the shaft 4 and is vented into the cake 10 through the air supply hole 8 on the circumferential side, and is ventilated into the cake 10 through the exhaust hole 1 of the outer cylinder 1.
1 to the deodorizing device via an exhaust pipe 12.

The cake 10 composted in the outer cylinder 1 is sequentially discharged from the discharge port 3 and conveyed by the conveyor 7 to a collection site.

According to the rapid composting device of the present invention, the compost material is composted while being guided through the outer cylinder by the rotation of the screw-shaped feed vane, so continuous operation is possible and production becomes extremely efficient.

In addition, during feeding, the compost material is sufficiently aerated through the numerous air supply holes provided in the hollow shaft of the feed blade, and the turning action is repeated extensively by the cut piece provided in the feed blade, so that maturation is significantly promoted. I can do it.

In addition, turning pieces are provided on the tip edge of the feed blade at appropriate intervals and protrude from the tip edge toward the discharge port along the axial direction of the outer cylinder. It can be sent from the input port side to the discharge port side, and it is possible to obtain compost of excellent quality.

In addition, due to the rational configuration of providing exhaust holes formed in the outer cylinder at approximately the same pitch as the feed vanes, and an exhaust pipe having a plurality of branch pipes communicating with each of these exhaust holes, there are no exhaust holes or branch pipes. The exhaust gas in the outer cylinder can be efficiently guided to the deodorizing device with a simple structure without being too large as necessary, nor too small to the extent that the exhaust air in the entire outer cylinder is unevenly distributed.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing an embodiment of the present invention, and Fig. 2 is a longitudinal sectional view showing an embodiment of the present invention.
It is an AA sectional view of the figure.

Claims (1)

[Scope of utility model registration request] An outer cylinder having an inlet at one end and an outlet at the other end, a hollow shaft installed concentrically and rotatably around an axis within the outer cylinder, and an outer periphery of the shaft. A screw-shaped feed blade fixed to a surface, a large number of air supply holes formed in the shaft, and protrusions provided at appropriate intervals from the tip edge of the feed blade in the axial direction of the outer cylinder from the tip edge. a cut-back piece protruding toward the discharge port side along the outer cylinder, exhaust holes formed in the outer cylinder at substantially the same pitch as the sending blades, and an exhaust pipe having a plurality of branch pipes communicating with each of these exhaust holes. Equipped with rapid composting equipment.