KR950006516Y1 - Cooler for manufacturing flame resistance plastic - Google Patents

Abstract

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Description

Chiller of flame retardant plastic machine

1 is an installation of the flame retardant plastic manufacturing machine to which the present invention is applied.

2 is a cross-sectional view of the present invention.

* Explanation of symbols for main parts of the drawings

2 mixer 3 cooler

30: cooling hopper 31: power transmission unit

32: blower

The present invention relates to a flame retardant plastic machine.

In particular, by cooling the highly concentrated pellets mixed from the mixer at a constant speed and by cooling by air blowing, the cooling device of the flame retardant plastic maker which can prevent the separation of layers due to the specific gravity difference of the raw materials and the raw materials that have been mixed. It is about.

Flame retardant plastic is composed of organic synthetic materials with high content of carbon or hydrogen and is widely used in construction, electricity, transportation, and other industrial fields. The additive is added to produce the product through mixing and extrusion process.

As described above, a conventional manufacturing process for producing a flame retardant plastic will be described in detail. First, an appropriate amount of raw materials, various additives, and a component material which is a flame retardant is weighed, and then put into a first mixer, mixed by applying heat, and the mixture is finished. The raw subsidiary materials are transferred to an extruder to manufacture M / B (MASTER BATCH) cut to a predetermined size.

Subsequently, the M / B prepared as described above is added to a second mixer, mixed at a constant speed, and then stored in a hopper to perform layer separation by specific gravity difference, and the M / B separated layer performs a plasticization kneading process. After molding through an extruder to go through the cutting process is finally to perform the packaging process.

By the way, in the conventional manufacturing machine for producing a flame-retardant plastic as described above, the process of producing the metered raw materials, raw materials as high-concentrated pellets and supplying them to the extruder is about 150 ℃ state of a small amount of raw materials and auxiliary materials through the primary mixer After 30 minutes of stirring in the form of concentrated lumps and put it back to the second mixer to produce a high concentration of pellet called M / B, the manufacturing process is complicated, as well as the concentrated M / B and resin Due to the large specific gravity difference, the layer separation phenomenon occurs due to the specific gravity difference after the completion of the mixing, which causes a serious variation in the physical properties between lots.

Accordingly, the present invention has been made in view of the above-mentioned conventional defects, and an object thereof is to provide a cooling device of a flame retardant plastic maker that can prevent delamination caused by the difference in specific gravity of raw materials and raw materials that have been mixed. have.

This object of the present invention is achieved by providing a cooling device which stirs the highly concentrated pellets mixed from the mixer at a constant speed and cools them by blowing in the outside air and then discharges them to the extruder. A stirring fan is installed to rotate by receiving the power of the cooling hopper, and a ventilation guide made of a mesh is installed on the lower inner wall of the cooling hopper, and the cooling hopper is made by communicating with the blower and the exhaust duct.

Hereinafter, the configuration of an embodiment of the present invention in detail with reference to the accompanying drawings.

1 is a view illustrating the installation of a flame retardant plastic maker to which the present invention is applied, and the flame retardant plastic maker includes a raw material supply part 1, a mixing part 2, and a cooling part 3 sequentially connected to each other, and the cooling part 3 Extruded part (4), cutting part (5) and packaging part (6) are sequentially configured in the), in this flame retardant plastic maker, the present invention cooling device is cooled between the mixing part (2) and the extrusion part (4) The section 3 is provided, where 30 is a cooling hopper, 31 is a power transmission section, and 32 is a blowing section, as shown in cross section in FIG.

First, the cooling hopper 30 is formed so that the lower portion is surrounded by the outer body (30A) of the upper and lower straits and installed vertically so as to communicate with the mixing section (2) and the extrusion section (4), of the cooling hopper 30 In the center, the upper and lower sides of the rotating shaft 303 are alternately connected, and both side ends of the stirring fan 301 forming a wing 302 which is proximate to the inner wall of the outer body 30A, and the lower portion formed in the upper and lower narrow type The blower guide 304 is configured to be spaced apart from the inner wall by a small width.

And the power transmission unit 31 is configured in the upper portion of the cooling hopper 30, which connects the reducer 312 to the motor 311, the reducer 312 is a stirring fan built in the cooling hopper 30 It is connected to the end of the rotation shaft 303 by the belt 313 pulley 314 is configured to transmit the rotational force of the motor 311 to the stirring fan 301.

In addition, the blower 32 is equipped with a blower 321 on the other side of the lower side of the cooling hopper 30 and the blower pipe so that the outlet of the blower 321 and the blower guide 304 installed on the lower side of the cooling hopper 30 communicate with each other. The duct 322 is connected to the exhaust duct 323 so as to communicate with the upper portion of the outer body 30A of the cooling hopper 30 and the upper portion of the blower 321.

As described above will be described in detail the operation process and the resulting effects of the present invention is configured in combination.

First, the raw material and the subsidiary material measured through the supply unit 1 are generated in a highly concentrated pellet state in the mixing unit 2, and when the input of the cooling unit 3 into the cooling hopper 30 is completed, power is supplied to the motor 311. When the power is transferred to the stirring fan 301 through the reducer 312 and the power is applied to the blower 32 to generate the blowing force, the raw and sub-materials input to the cooling hopper 30 are the stirring fan 301. ) Is stirred by the rotation of the fan, and the wind generated from the blower 32 flows through the outer body 30A through the blower guide 304 to cool the raw materials and materials, and then is discharged to the outside through the exhaust duct 323. .

Through the stirring and cooling process, flame retardant plastic having a predetermined length is produced in the delivery part 5 via the extruded part 4 of the raw material and the sub-remixed material at about 30-40 ° C.

Therefore, the present invention prevents layer separation due to the difference in specific gravity between the raw materials and the raw materials, which are mixed by cooling the raw materials and the raw materials, which are mixed at a high concentration of about 90 ° C., by the re-mixing at a constant speed and by blowing air. It is an effective design to reduce the physical property deviation of the liver.

Claims (2)

In the flame-retardant plastic maker that manufactures pelletized flame-retardant plastic by sequentially measuring the raw materials and subsidiary materials, mixing, extruding, cutting, and packaging processes, the raw materials and subsidiary materials produced in the coated state in the mixing section are transferred into the cooling hopper. Cooling apparatus of the flame-retardant plastic maker characterized in that the mixing and re-mixing with a stirring fan and at the same time air-cooled through a blower to about 30 ~ 40 ℃. The cooling hopper of claim 1, wherein a stirring fan is installed in an outer body of which a lower portion is formed of a light receiving strait, and a cooling guide is provided on an inner wall of the lower portion, and a power of a motor is reduced and transmitted by a stirring fan on an upper portion of the cooling hopper. Cooling apparatus for a flame-retardant plastic maker characterized in that it comprises a power transmission unit and a blower for introducing the outside air to the blowing guide side of the cooling hopper and discharged to the top.