KR200307207Y1 - Extruding device for refuse derived fuel extruding machine - Google Patents

Abstract

The present invention discloses an extrusion device for a waste solid material extruder for extruding combustible waste into agglomerates of uniform shape and size. The waste solid material extruder of the present invention compresses and transports the crushed waste by a screw rotating in a cylinder, and the crushed waste transported is extruded through the extrusion hole of the extrusion die. The extrusion apparatus has a hollow extrusion tube having a molding hole communicating with the extrusion hole of the extrusion die for extruding the waste molded body, and the inner surface of the molding hole has a spiral fluid to discharge the fluid generated from the waste molded body. The discharge groove is formed. According to the present invention, fluid such as leaking water and gas generated during the extrusion molding of the waste molded body can be smoothly discharged separately from the waste molded body through the extrusion tube, thereby greatly improving the moldability. In addition, by improving the transportability of the waste molded body by a simple structure, there is a very useful effect to prevent the wear of the cylinder and screw to ensure the life, and to improve the reliability by preventing mechanical vibration and impact.

Description

Extruder for Waste Solid Material Extruder {EXTRUDING DEVICE FOR REFUSE DERIVED FUEL EXTRUDING MACHINE}

The present invention relates to a solid waste raw material extruder, and more particularly to an extrusion apparatus for waste solid raw material extruder for extruding the combustible waste pulverized into a lump of uniform shape and size.

Refuse Derived Fuel (RDF) refers to solid fuel that is pulverized, dried and compressed by selecting combustible wastes such as paper, wood, fiber, synthetic fiber, and plastic.WDF (Waste Derived Fuel), PRF ( Processed refuel fuel (RPF), recycled plastic fuel (RPF), and the like are also used as terms. Solid waste fuel can be used as a heat source for incineration and power generation facilities to achieve economic and practical waste disposal and energy recovery. On the other hand, in recent years, the technology to recycle the building materials to increase the crushing rate and water content during the crushing and compression molding of the waste has been actively studied.

As described above, as an example of the prior art for compressing combustible waste into solid waste fuel, the present inventors discloses Utility Model Publication No. 159642. A screw installed inside the cylinder drives the driving means. By rotating by transporting the crushed waste, the crushed waste transported is disclosed by molding the extrusion through the extrusion hole of the extrusion die (extrusion) in a lump. This technology performs sorting to remove non-combustible materials, metals, and the like from flammable rubbish, and puts the sorted comminuted waste comminuted by a grinder into a cylinder. Then, the crushed waste is compressed and transported by the rotation of the screw, and is extruded into a waste molded body through the extrusion hole of the extrusion die.

On the other hand, the extrusion hole of the extrusion die is equipped with a hollow extrusion tube having a molding hole in order to form a garbage molded body in a circular cross section. However, there is a problem in that the moldability and transportability of the waste molded body passing through the molding hole of the extruded tube are greatly reduced. In other words, the combustible trash is mostly collected on the roadside, and it is often stored in the yard, so it contains a large amount of water in case of rain or snow. The combustible waste, which is comminuted with the combustible garbage, also contains a large amount of water. The water of the crushed waste leaks into the leaked water during the compression and transportation of the crushed waste by the rotation of the screw and is extruded through the extruded tube together with the waste compacted body, and the leaked water decreases the binding force of the crushed waste, Inhibits solidification. Therefore, there is a disadvantage in that a molding defect that cannot maintain a shape while dispersing the waste molded body passing through the molding hole of the extruded tube occurs.

In addition, in extrusion of combustible waste such as synthetic fibers and plastics, plasticizers are provided by installing heaters in cylinders or extrusion dies. However, the gas generated during the plasticization of combustible waste is compressed to high temperature and high pressure during the compression and transportation of the crushed garbage by the rotation of the screw, and the high temperature and high pressure compressed gas degrades the transportability of the waste molded body through the molding hole of the extruded tube. It involves the problem of letting. If the waste molded object is not discharged smoothly through the molding hole of the extruded tube, it will not only cause the rotational resistance of the screw, but also cause the mechanical vibration, and also accelerate the wear of the cylinder and the screw by the crushing waste and shorten the life. There is a problem. In particular, the high-temperature, high-pressure compressed gas that explosives explodes by the extrusion force of the crushed waste in the molding hole of the extruded tube, disperses the crushed waste, generates noise and impact, and greatly reduces the reliability of the solid material extruder. There is.

The present invention has been made in order to solve the various problems of the prior art as described above, the object of the present invention is to smoothly discharge the fluid generated during the extrusion molding of the waste molded body can greatly improve the moldability It is to provide an extrusion device for a solid raw material extruder.

Another object of the present invention is to improve the transportability of the waste molded body by a simple structure, to prevent the wear of the cylinder and screw to ensure the life, and to prevent mechanical vibration and impact to improve the reliability of solid waste material extruder extruder To provide a device.

A feature of the present invention for achieving the above object is, in the solid waste material extruder for molding the waste molded body is compressed and transported by a screw rotating in the cylinder is extruded through the extrusion hole of the extrusion die, extrusion of the waste molded body It has a hollow extruded tube having a forming hole communicating with the extrusion hole of the extrusion die to be molded, the inner surface of the forming hole is a waste having a spiral fluid discharge groove is formed to discharge the fluid generated from the waste molded body Extruder for solid material extruder.

1 is a cross-sectional view partially showing an example of a solid waste raw material extruder to which an extrusion apparatus according to the present invention is applied;

Figure 2 is a perspective view showing a partially cut off the configuration of the extrusion tube in the extrusion apparatus according to the present invention,

Figure 3 is a cross-sectional view showing the configuration of the extrusion tube in the extrusion apparatus according to the present invention,

Figure 4 is a side view showing the configuration of the extrusion tube in the extrusion apparatus according to the present invention,

5A and 5B are side views illustrating another example of the extruded tube in a view similar to that of FIG. 4.

♣ Explanation of symbols for the main parts of the drawing ♣

1: waste compact 10: waste solid material extruder

14: cylinder 16, 18: screw

20: extrusion die 24: extrusion hole

30: holder 40: extruded tube

42: molding hole 46: spiral fluid discharge groove

48: open end 50: cutter

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of an extrusion device for a solid raw material extruder according to the present invention will be described in detail.

First, referring to Figure 1, the cylinder 14 for transporting the crushed waste is installed on the frame 12 of the solid material raw material extruder 10 to which the extrusion device of the present invention is applied, the bore of the cylinder 14 (Bore: 14a) is provided with a pair of screws 16 and 18. On the outer surfaces of the screws 16 and 18, spiral wings 16a and 18a are formed to be engaged with each other for compression and transportation of the crushed waste. In the present embodiment, the extruder 10 shows a so-called twin screw type in which a pair of screws 16 and 18 are installed in the bore 14a of the cylinder 14, but the extrusion of the present invention is performed. The device is, of course, applicable to a so-called single screw extruder which installs a single screw in the bore of the cylinder.

Moreover, the journals 16b and 18b of the screws 16 and 18 penetrate through the shaft holes 22a and 22b of the extrusion die 20 arrange | positioned in front of the cylinder 14, and are extruded At the edge of the die 20, an extrusion hole 24 for extruding crushed waste is formed. 1 shows two extrusion holes 24 of the extrusion die 20, but the extrusion holes 24 are formed in plural numbers having equal intervals along the circumferential direction of the extrusion die 20. The holder 30 is mounted on the front surface of the extrusion die 20, and the journals 16b, 18b of the screws 16, 18 are bearings 34a, 34b in the shaft holes 32a, 32b of the holder 30. It is supported so that it can rotate. At the edge of the holder 30, a mounting hole 36 aligned with the extrusion hole 24 of the extrusion die 20 is formed.

1 to 3, the mounting hole 36 of the holder 30 is equipped with an extruded tube 40, the extruded tube 40 is an extrusion die 20 for extruding the waste molded body 1. It has a molding hole 42 in communication with the extrusion hole 24 of the (). In the present embodiment, the extruded tube 40 is made of carbon steel for mechanical structure having a length of about 440 mm. The inner diameter of the molding hole 42 is designed to be about 30 mm to extrude the pulverized waste extruded through the extrusion hole 24 of the extrusion die 20 into the garbage molded body 1 of a circular cross section.

In addition, a flange capable of catching the engaging jaw 38 formed in the mounting hole 36 of the holder 30 at the rear of the outer surface of the extruded tube 40 to set the position of the extruded tube 40 and preventing separation ( 44) is formed. The inner surface of the forming hole 42 of the extruded tube 40 has a spiral fluid discharge groove 46 for discharging fluid, that is, leakage water and gas generated during compression, transportation, and extrusion of the compacted body 1. ) Is formed. 2 and 3, the fluid discharge groove 46 is formed as a semi-circular groove having a radius of about 2mm, but this is illustrative and the fluid discharge groove 46 may be formed as a square groove or a triangular groove.

As shown in Figure 3 and 4, the fluid discharge groove 46 of the extrusion tube 40 is an open end that is open at the end, that is, the front end and the rear end of the extrusion tube 40 to facilitate the discharge of fluid ( 48). The open end 48 is formed by an incomplete spiral when, for example, turning the fluid discharge groove 46 on the inner surface of the extrusion hole 46 by a lathe. 5A and 5B, two and eight open ends 48 of the fluid discharge groove 46 are formed, respectively, but the number and position of the open ends 48 may be appropriately changed. As illustrated in FIG. 1, the molding holes of the extruded tube 40 are formed in the journals 16b and 18b of the screws 16 and 18 protruding through the shaft holes 32a and 32b of the holder 30. A cutter 50 for cutting the waste compact 1 formed through the 42 into a lump of a required length is mounted.

It will now be described the operation of the extrusion device for a solid raw material extruder according to the present invention having such a configuration.

Referring to FIG. 1, the operator first performs sorting to remove non-combustible materials, metals, and the like from the combustible rubbish, and then inserts the sorted combusted waste comminuted by a grinder upstream of the cylinder 14. Screws 16 and 18, which are rotated by the driving of the motor, are well-known driving means of the solid raw material extruder 10, and press and pulverize the crushed waste downstream of the cylinder 14 to extrude the extrusion die 20. Extruded through the hole 24, the cylinder 14 induces transportation of the crushed garbage.

Next, the pulverized waste discharged through the extrusion hole 24 of the extrusion die 20 enters the molding hole 42 of the extrusion tube 40 and is molded into a trash molded body 1 of a circular cross section. The waste compact 1 is transported with linearity in the molding hole 42 by the extrusion force, ie thrust, passing through the extrusion hole 24 of the extrusion die 20, whereby the waste compact 1 is discharged fluid. It passes smoothly through the forming hole 42 without filling the groove 46. The cutter 50 which rotates together with the screws 16 and 18 cuts the rear end of the conveying direction of the waste compact 1 passing through the molding hole 42 of the extruded tube 40 at each rotation, thereby removing the waste compact 1. Make a chunk of uniform shape and size.

Referring to FIGS. 1 and 3, the leaked water generated during the compression and transportation of the crushed waste by the rotation of the screws 16 and 18 and the leaked water generated during the molding of the waste compact 1 are extruded tubes 40. After being collected in the fluid discharge groove 46 of the) is discharged separately from the waste molded body (1) along the fluid discharge groove (46). Therefore, the moldability of the waste molded body 1 due to the leaking water inevitably generated during the molding process of the waste molded body 1 can be effectively prevented and the moldability can be improved.

In addition, the gas generated during the plasticization of combustible waste such as synthetic fibers, plastics, etc. is also discharged separately from the waste compact 1 along the fluid discharge groove 46 similarly to the leaked water described above. Therefore, by preventing the generation of compressed gas in the molding hole 42 of the extrusion tube 40, not only can improve the transportability and formability of the waste molded body 1, but also prevents the generation of noise and impact due to the compressed gas. The reliability can be improved. In addition, by preventing the rotational resistance of the screws 16 and 18 due to the clogging of the waste molded body 1 by the smooth transportation of the waste molded body 1, the wear of the cylinder 14 and the screws 16 and 18 is prevented and the service life is prevented. Can be guaranteed.

The above-described embodiments are merely illustrative of one embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and may be appropriately changed within the scope of the claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, according to the extruder for the waste material raw material extruder according to the present invention, the fluid, such as leaking water, gas generated during the extrusion process of the waste molded body is smoothly discharged separately from the waste molded body through the extrusion tube to form Can greatly improve. In addition, by improving the transportability of the waste molded body by a simple structure, there is a very useful effect to prevent the wear of the cylinder and screw to ensure the life, and to improve the reliability by preventing mechanical vibration and impact.

Claims (2)

In the waste solid raw material extruder for molding waste compacts that are extruded through the extrusion hole of the extrusion die while being compressed and transported by a screw rotating in the cylinder, It has a hollow extruded tube having a molding hole communicating with the extrusion hole of the extrusion die for extrusion molding the waste molded body, the inner surface of the molding hole is a spiral to discharge the fluid generated from the waste molded body Extrusion apparatus for a solid material raw material extruder, characterized in that the fluid discharge groove is formed. The extruder of claim 1, wherein the helical fluid discharge groove of the extruded tube has at least two open ends at the end of the extruded tube.