JPH0123678Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is applicable to lightweight materials in municipal waste, such as
It is used in the field of compressing and solidifying fiber waste, polymeric substances, etc. to produce solidified molded products that can be used as solid fuel or used in landfills.

(b) Prior art As shown in Japanese Utility Model Publication No. 31-4151, a conventional screw solidification device has a thin rod portion 2 in the shape of a cylindrical rod whose axis coincides with that of the screw compression rod 1 at the front end of the screw compression rod 1.
A vent hole 3 is bored in the center line of the narrow rod portion 2, and a branch vent hole 3' is bored from the outer periphery toward the vent hole 3.

Therefore, the area of the branch air vent hole 3' in contact with the solidified molded product on the narrow rod portion 2 is small, and water vapor, gas, etc. generated in the solidified molded product on the narrow rod portion 2 are transferred to the air vent hole 3'.
It is difficult to enter, and the branch vent hole 3' is easily clogged with solidified molded material.

Furthermore, drilling the air vent holes 3 and the branch air vent holes 3' in the narrow rod portion 2 is difficult to process and increases costs.

(c) Problems that the invention aims to solve This invention was made to solve the above problems, and by fixing a protruding member on the circumference of the core rod over almost the entire length of the core rod. , the communication hole formed between the center hole of the solidified molded product and the core rod containing the protrusion member is made to be in close contact with the solidified molded product, so that water vapor, gas, etc. generated in the solidified molded product on the core rod can flow into the communication hole. It is easy to enter, the solidified molded product does not get stuck in the communication hole, and the structure is simplified to reduce costs.

(d) Means for Solving Problems The feature of the present invention is that lightweight municipal waste thrown in from a hopper is compressed into a compression cylinder in the front by a screw inserted into a casing connected to the lower part of the hopper. In the screw solidification device, the lightweight material is solidified and molded by the abrasion resistance of the inner surface of the compression cylinder, in which a cylindrical rod-shaped core rod whose axis coincides with the screw is fixed to the front end of the screw. , a protruding member is fixed on the circumference of this core rod over substantially the entire length of the core rod.

(e) Embodiment An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a hopper into which lightweight municipal waste is thrown, and the rear part of a cylindrical casing 2 is connected to the lower part of the hopper 1. A compression cylinder 3 having the same shape as the casing 2 is connected to the front end of the casing 2.

Inside the casing 2 is a screw 6, which is made up of a main shaft 4 having approximately the same length as the casing 2, and blades 5 spirally provided on the main shaft 4. 6
A core rod 7 whose axis coincides with the main shaft 4 of the casing 2 is fixed thereto, and can be rotated in the direction of the arrow in FIG. There is.

The blades 5 have two stages, a first blade 5a and a second blade 5b, with the first blade 5a fixed to the rear of the front part of the main shaft 4, and the second blade 5b fixed to the front end.

By the way, a pair of protruding members 9, 9 are fixed on the circumference of the core rod 7 over substantially the entire length of the core rod, and as shown in FIG. The center hole 11 of the solidified molded product 10 is gradually decreased in the direction of rotation of the core rod 7 as shown by the arrow.
A pair of communication holes 12, 12 are formed between the core rod 7 and the protruding member 9.

The present invention has the above-mentioned structure, and its operation will now be explained. First, the drive device 8 is operated to rotate the screw 6 in the direction of the arrow in FIG. 1.

Thereafter, when the lightweight items in the municipal waste are put into the hopper 1, the lightweight items pass through the hopper 1 and enter the casing 2.

Light objects that have entered the casing 2 are screwed into the screw 6.
The pre-compressed lightweight material is transported forward while being compressed by the first blade 5a of the first blade 5a and the second blade 5a.
It fills the intermediate part between the blade 5b and the blade 5b.

Next, the precompressed lightweight material is cut and compressed by the second blade 5b, and the inner surface of the compression cylinder 3 and the protruding member 9
The solidified molded product 10 is solidified and molded by the abrasion resistance caused by the outer surface of the compressed cylinder 3 and has a center hole 11 formed by the projection member 9, and is discharged from the tip of the compression cylinder 3.

At this time, water vapor generated ahead of the core rod 7,
Gas and the like are discharged to the outside through the center hole 11, and water vapor, gas, and the like on the core rod 7 are discharged to the outside through the center hole 11 through the pair of communication holes 12 and 12.

By the way, the center hole 11 of the solidified molded product 10 also serves to promote combustion when used as a fuel.

(f) Effect of the invention As described above, in the present invention, since the protrusion member is provided on the circumference of the core rod over almost the entire length of the core rod, the connection between the center hole of the solidified molded product and the core rod including the protrusion member is reduced. The communication hole formed between the two is in direct and large contact with the solidified molded product, and water vapor and gas generated by the solidified molded product on the core rod can easily enter the communication hole, and the solidified molded product will not clog this communication hole. .

Furthermore, it is sufficient to simply attach the protruding member to the core rod.
The structure is simple and costs are reduced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the entire invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a longitudinal cross-sectional view of the solidified molded product. 1 is a hopper, 2 is a casing, 3 is a compression cylinder,
6 is a screw, 7 is a core rod, and 9 is a protruding member.

Claims (1)

[Claims for Utility Model Registration] Light objects in the municipal waste inputted from the hopper are transferred to the front compression cylinder by a screw inserted into a casing connected to the lower part of the hopper, and the friction resistance of the inner surface of the compression cylinder is In the screw solidifying device for solidifying and molding the lightweight material, the front end of the screw includes:
A screw solidifying device in which a cylindrical rod-shaped core rod whose axis coincides with the screw is fixed, and a projection member is fixed on the circumference of the core rod over substantially the entire length of the core rod. The screw solidifying device according to claim 1, wherein the protruding member has a protruding amount that is gradually reduced in the rotational direction of the core rod.