JPH0929128A - Method for pulverizing trunk/leaf mixed material to fine particles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for pulverizing branches and leaves produced in pruning trunks and leaves of roadside trees, park trees or the like. SOLUTION: When branches and trunks to which living leaves are attached produced in pruning trees are pulverized, admixtures incorporated therein that cannot be pulverized are removed and while a mixing ratio of trunks to branches and leaves is adjusted, they are fed to a pulverizer and the pulverized materials are grouped according to their particle size and are taken out, more concretely, a screen 2 and a conveyor 3 are installed on a workbench 1 before feeding to the pulverizer to remove the admixture such as pebbles contained in the pruned branches and leaves by the screen 2. Bent and projecting trunks are cut and corrected by a chain saw, and branches and leaves around trunks are fed using a conveyor so that the branches and leaves can be inserted into clearances, and are pulverized by a pulverizer 6 having a structure in which cutting blades made of cemented carbide steel are fitted on the surface of a drum in optimum arrangement for fine particle pulverization are rotated at high speed for cutting, and are discharged. The discharged pulverized materials are automatically divided into fine particles, intermediate particles and the others.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for pulverizing branches and leaves of street trees, park trees and the like generated during pruning of trunk leaves into fine particles.

[0002]

2. Description of the Related Art Branches and leaves generated during pruning of trunk leaves are usually incinerated at an incinerator. Therefore, general waste that exceeds the incineration capacity is directly buried in the soil at the landfill site for disposal. Due to the large amount of garbage generated recently, securing landfill disposal sites is a headache for the people involved.

Since tree pruning branches and leaves can be reduced and pulverized to be reduced as an effective improver for soil, if the incineration capacity is used for general waste, the volume will be reduced and the period of use of the disposal site will be shortened. It will be able to extend.

In general, pruning stems and leaves are often generated by the maintenance work of trees such as streets, parks, or home gardens. Therefore, in the accumulation work, stone blocks, empty cans, wires, etc. are mixed,
This is an obstacle to the crushing work.

When the collected pruned branches and leaves are crushed and returned to the soil, the grain shape in the crushed state is relatively large, and at least 6 to ripen until they can be reduced to the soil. One month or more is required.

The reason for this is that the decomposition of organic matter is carried out by the activity of microorganisms, but the surfaces of trunks, branches and leaves are protected by natural substances that inhibit the activity of microorganisms. This is because the cores of the stems and leaves have a large content of components such as cellulose and lignin, and it takes a long time for the microorganisms to decompose them.

On the other hand, the trunk branches are generally hard, whereas the leaves are soft, and it is technically extremely difficult to grind them into the same fine-grained shape. A chip machine is usually used for crushing, but in the crushed state,
The stem part has a large grain shape, the branch part is simply cut into short pieces, and the leaf part has almost the same leaf shape, is slightly scratched, and is separated from the branch. Are generally mixed and discharged.

[0008] This is fermented in a rotary drum type or a stirring type fermenter or a sedimentation type fermenting facility. The largest grain type is secondarily fermented in the soil and does not cause damage to the cultivated product. It takes a long time to ferment to the state.

[0009]

Therefore, in order to destroy as much as possible the tissue for protection against microbial erosion of plants and to widen the area where the microorganisms eat, it is necessary to make the crushed state into fine particles. Further, if the microorganisms having the same surface area per unit area are prepared and provided to the microorganism, the fermentation period can be shortened and the aging time can be aligned. In addition, by pulverizing the trunk branches and leaves into fine particles, the nutrient sources of microorganisms such as sugars contained in the branches and leaves can be effectively used and their activities can be activated.

[0010]

According to the first aspect of the present invention, a non-crushable foreign substance that is mixed in a crushing process of branches and trunks having attached live leaves generated during pruning of a tree is carried out. The present invention proposes a method for pulverizing fine particles of a stem-and-leaf mixed material, which is characterized by removing the above, supplying the mixture to a pulverizer while adjusting the mixing ratio of the stems and branches, and extracting according to the grain shape.

According to the second aspect of the present invention, a screen and a conveyor are provided on the workbench before being put into the crusher to remove impurities such as stone blocks contained in the pruned branches by the screen. ,
Bent and protruding stems were cut and corrected by a chain saw on the workbench, and trunk stems and leaves were put in using a conveyor, and the gaps in the trunk at the inlet were filled with stems and leaves, and then discharged. It proposes a method for pulverizing a finely pulverized product into a fine grain, an intermediate grain, and the like, which is characterized in that it is automatically divided into other grains. The impurities that inhibit the crushing are removed, and the stems and leaves are simultaneously drawn in, and most of them are crushed into fine particles, which are discharged according to the particle shape.

[0012]

1 is a schematic view of a crushing apparatus used in the method of the present invention, in which a screen 2 and a conveyor 3 are provided on a workbench 1 and the screen is used. The conveyor 2 has a slanting shape, and foreign substances such as stone blocks are dropped from the clearance of the slough while transferring the branches and trunks attached to the fresh leaves, and the conveyor 3 has the belt conveyor 4 and the belt conveyor 4 arranged at the center. Comprising the material introduction guides 5 and 5 on both sides, the branches and trunks attached to the fresh leaves, that is, the branch-and-leaf mixed material, will be clogged even if the trunks, fine branches, and flexible leaves inside the crusher 6 are simultaneously supplied, and skewing, etc. The foliage-introducing roller 7, which has a structure that prevents
It is crushed by a batch roller 8 and a high-speed rotating drum cutter 9, and is then subjected to a high-speed screen 10 to be separated into fine particles, intermediate particles, and the like and discharged.

The largest number of fine particles discharged are:
Not only is the protective tissue on the surface destroyed, and the microorganisms are more likely to bite, but the surface area is also large, and there is air containing oxygen necessary for the breathing of microorganisms in the voids between the grains.
Fermentation occurs rapidly. Therefore, if it is turned over while adjusting the water content suitable for fermentation, it can be aged in a short period of time.

The intermediate granular material can be used as a litter for livestock houses, and the residue obtained by mixing a large leaf-shaped material with a crushed product having a large trunk-branch particle shape is directly deposited and cut while adjusting the water content. If returned, the leaves will fall apart in a few weeks. This is screened and the fine powder can be immediately used as a soil improving material. Also, the one with a large grain shape is
After a deposition period of 3 to 6 months depending on the particle size, it can be used as a material for improving soil of trees.

[0015]

EFFECTS OF THE INVENTION According to the above-mentioned method of the present invention, a mixture of stem and leaf generated during pruning of stem and leaf of a tree or the like can be pulverized into fine particles until it can be used as compost or the like within a short period of time. It is possible.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the method of the present invention.

[Explanation of symbols]

 1 Workbench 2 Screen 3 Conveyor 6 Crusher

Claims (2)

[Claims] 1. When pulverizing a branch or a trunk having attached live leaves generated during pruning of a tree, non-pulverizable impurities mixed therein are removed to adjust the mixing ratio of the trunk and the foliage. A method for pulverizing fine particles of a stem-and-leaf mixed material, which comprises supplying to a pulverizer and extracting according to the grain shape. 2. A screen and a conveyor are provided on the workbench before being put into the crusher, and foreign substances such as stone blocks contained in the pruned branches are removed by the screen, and the trunk is used using the conveyor. Insert the branches and leaves, bend and project the stems with a chien saw on the work table and correct the cut, insert the branches and leaves to fill the gap in the trunk of the input port, and discharge the crushed product into fine particles, intermediate A method for crushing fine particles of a stem-and-leaf mixed material, which is characterized in that it is automatically divided into particles and the like.