KR102086839B1 - Apparatus for semi-productizing recycled synthetic resin - Google Patents

Abstract

The present invention relates to an apparatus for producing recycled synthetic resin semi-products. The present invention includes: a foreign matter removing unit which removes foreign matter mixed in raw materials; an extruding unit which extrudes the raw materials, from which foreign matter has been removed, into a form of wire having a certain thickness and has a heating and pressurizing unit to melt and transfer raw materials, a filter device to filter molten fluid raw materials, and a die flat unit to extract the fluid raw materials filtered by the filter device; a cooling unit which cools an extrudate extruded from the extruding unit; a cutting unit which passes the extrudate cooled by the cooling unit therein and cuts the extrudate into a predetermined size to make semi-products; and a first bagging unit which takes over semi-products discharged from the cutting unit and puts the semi-products in a carrying bag. The recycled synthetic resin semi-product apparatus of the present invention removes the dust and static electricity of introduced recycled raw materials in advance, filters melt in an extruding process by using a filter device, and thus, has good productivity since impurities are rarely included in produced products. Moreover, the present invention: has a less load of a filter device against the flow pressure of melt since a pressure is distributed by having a wide physical area of a filter net body constituting the filter device; and is not necessary to stop the apparatus frequently for maintenance since the replacement or cleaning cycle of the filter net body becomes longer.

Description

Apparatus for semi-productizing recycled synthetic resin

The present invention relates to an apparatus for recycling a discarded synthetic resin product, and more particularly, to a semi-manufactured recycled synthetic resin product having high purity and excellent overall work efficiency since the foreign substance is completely removed before extrusion.

For example, thermoplastic synthetic resins, including polycarbonate, etc., are easy to mold, lightweight, and have various characteristics to realize various physical properties by changing their internal composition, and thus they are widely used as important materials in various fields. There are no synthetic resins in the real world.

However, mass production and use of synthetic resins over the last few decades has led to recent environmental and social problems. This is because synthetic waste that remains undecomposed acts as a major cause of damaging nature and disturbing ecosystems.

On the other hand, as a general method for treating synthetic resin waste, landfilling, incineration, recycling and the like are known. By the way, since such landfill and incineration cause secondary environmental pollution, the recycling method with the least environmental load is recommended.

There are many types of recycling apparatus for recycling thermoplastic resin waste, but most of them follow the method of recycling waste plastics, melting them, extruding them, and cutting them to a certain size. The result produced through the recycling apparatus is used as raw material for the synthetic resin product, for example as a semi-finished product.

However, the conventional synthetic resin recycling apparatus, that is, semi-product manufacturing apparatus has the disadvantage that the quality of the resultant produced from the apparatus is not so good. In other words, even if the high-purity waste synthetic resin is introduced, the semi-finished synthetic resin product is pulverized into a low-grade material containing a large amount of impurities, not a high-quality material.

Domestic Patent Publication No. 10-1595155 (Pulverizer and recycling processing device for synthetic resin waste) Domestic Utility Model Publication No. 20-0403673 (Processed synthetic resin product and its manufacturing apparatus for recycling waste synthetic resin)

The present invention has been created to solve the above problems, it can produce a high quality semi-finished product because it contains little impurities in the produced result, the replacement and cleaning cycle of the filter network main body is easy to maintain and excellent productivity of recycled synthetic resin It is an object to provide a semi-productive device.

Recycling synthetic resin semi-productive apparatus of the present invention as a solution for achieving the above object comprises: a raw material mixing unit for mixing the synthetic resin raw material supplied from the outside; A foreign material removing unit for passing foreign materials mixed with the raw material by the raw material mixing unit and removing foreign substances mixed in the raw material; After heating and melting and filtering the raw material from which the foreign substances have been removed by the foreign material removing unit, and extruding it in the form of a wire rod having a predetermined thickness, the heating press unit for melting and conveying the received raw material, and melted by the heating press unit. A filter unit for passing and filtering the flowable raw material in a closed state, and an extrusion unit having a die flat portion for extracting the flowable raw material filtered by the filter device into a wire rod form; A cooling unit including a water tank accommodating cooling water, the cooling unit configured to cool the extrudate extruded from the extrusion unit by cooling water; A cutting part which passes the extrudate cooled by the cooling part and cuts it into a predetermined size and semi-products; A first bagging part which receives the semi-finished product discharged from the cutting part and puts it in a carrying bag, and the foreign material removing part removes dust and static electricity mixed in the raw material, and sprays air to the input raw material to remove dust from the raw material. A dust removal device for separating and an electrostatic treatment device for removing static electricity of the raw material by applying an electrostatic treatment agent to the raw material that has passed through the dust removing device, wherein the dust removing device comprises; Inner casing provided with a hopper for receiving the raw material from the raw material mixing unit, a lower portion of the hopper, a vertical passage through which the raw material falls, and having a plurality of exhaust holes opened to the side, and the inner casing surrounding the inner casing. An outer casing providing a negative pressure space between the outer circumferential surface of the casing, a vacuum pump which forms a negative pressure in the negative pressure space of the outer casing to induce air in the inner casing to the negative pressure space, and is installed in the inner casing, An air ejection chamber spaced from the inner circumferential surface of the inner casing and having a plurality of ejection holes therein, and pressurized air into the air ejection chamber, and the air is ejected through the ejection hole, and between the air ejection chamber and the inner casing inner circumferential surface Blowers for removing dust by colliding with falling raw materials, fixed to the inner circumferential surface of the inner casing As, including a plurality of air guide plate for guiding the side of the exhaust holes the air ejected from the air ejection chambers, and the electrostatic processing apparatus; A support casing connected to a lower portion of the inner casing to induce the raw material dropped through the inner casing, a processing pipe disposed inside the supporting casing, and having a plurality of injection nozzles, and pressurizing an electrostatic treatment agent into the processing pipe; An electrostatic treatment agent is provided through the injection nozzle to provide a treatment agent supply portion to contact the raw material.

In addition, a blending portion disposed on the downstream side of the first bagging portion, the blending portion for receiving and mixing the semi-finished product bagged in a plurality of carrying bags therein; And a second bagging portion for repackaging the semi-finished product blended by the blending portion in a carrying bag.

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In addition, the filter device; A filter case having an opening at one end, and a filter case having an opening at one end, and a fluid flow in a molten state flowing through the inlet through the inlet port. It takes the raw material into the inside and discharges it to the outlet side, and has a filter network body having a plurality of through-holes through which the flowable material passes and filters out the impurities, and is detachably attached to the opening of the filter case in combination with the filter network body. It is mounted to include a closed holder for sealing the interior space of the filter case.

In addition, the filter net body may take the form of a cylindrical tube spaced apart from the inner circumferential surface of the filter case, or a portion of the pleated tube supported by the filter case in a state of being in line contact with the inner circumferential surface of the filter case.

In addition, the blending unit; A main body consisting of a cylindrical part having a constant diameter, a funnel part integral with the lower part of the cylindrical part and having a flow port at the lower end thereof, and a semi-finished product placed in the lower part of the main body and introduced from the outside; The input hopper leading to the lower portion of the flow port through, and vertically disposed in the interior of the main body and blended in a manner of lifting the semi-finished product introduced through the input hopper to the top and then free-falling, vertically arranged on the top of the flow port A screw case, a blender having a blending screw installed on the inside of the screw case so as to be axially rotatable, the lower end of which passes downwardly through the flow port and is supported at the bottom of the input hopper and the upper end is supported by the cylindrical part; To rotate the input object through the injection hopper And a motor for transporting and dropping from the upper end of the screw case, wherein the funnel has a bypass hole for discharging a part of the semi-finished product dropped from the upper end of the screw case to the outside of the funnel and bypassing the feed passage of the hopper. Is formed.

In addition, the notch forming portion having a pair of forming rollers having a tooth formed on the outer circumferential surface and passing the extrudate therebetween, forming a notched pitch at the extrudate entering the cutting portion between the cooling portion and the cutting portion. It is further provided.

The recycled synthetic resin semi-productive apparatus of the present invention made as described above removes dust and static electricity of regenerated raw materials, and further filters the melt during the extrusion process using a filter device, so that impurities are almost not included in the produced result. The productivity is not so good.

In addition, since the physical area of the filter network body constituting the filter device is wide, the pressure is dispersed, so that the load of the filter device to the flow pressure of the melt is small, and the replacement or cleaning cycle of the filter network body is long, so the device is frequently used for maintenance. There is no need to stop it.

1 is a block diagram showing the overall structure of a recycled synthetic resin semi-product manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram schematically showing a recycled synthetic resin semifinished product according to an embodiment of the present invention.
3 is a cross-sectional view showing a separate dust removal device shown in FIG.
4 is a cross-sectional view of the electrostatic treatment apparatus shown in FIG.
5 is a plan view showing a mounting state of the filter device shown in FIG.
6 is an exploded perspective view of the filter device shown in FIG. 5.
FIG. 7 is a cross-sectional view for describing a modification of the filter device illustrated in FIG. 5.
8 is a cross-sectional view illustrating the blending unit of FIG. 2 separately.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a preliminary structure of a recycled synthetic resin semifinished product 10 according to an embodiment of the present invention, and FIG. 2 is a schematic view showing a recycled synthetic resin semifinished product according to an embodiment of the present invention. One drawing.

As shown, the recycled synthetic resin semi-product manufacturing apparatus 10 according to the present embodiment, the raw material mixing unit 20, the foreign matter removing unit 30, the extrusion unit 40, the cooling unit 50, notch forming unit ( 60, the cutting unit 70, the first bagging unit 80, the blending unit 90, and the second bagging unit 100.

First, the raw material mixing unit 20 serves to mix the synthetic resin raw material supplied from the outside. The synthetic resin raw material is a thermoplastic synthetic resin, for example, polycarbonate collected for recycling purposes, and may have a particle size of, for example, about 5 mm through a preliminary process.

The raw material mixing unit 20 has a silo mixing chamber 21. The raw materials introduced into the mixing chamber 21 are mixed through a stirring process and have a uniform density distribution. In the state in which the raw materials are loaded, the raw materials placed at the bottom may be agglomerated by the weight of the raw materials stacked at the top, and the agglomerated materials are unpacked by the raw material mixing unit 20 to allow quantitative supply of raw materials.

The raw materials sufficiently mixed in the raw material mixing unit 20 are transferred to the foreign material removing unit 30 through the conveyors 23 and 24. The foreign material removal unit 30 receives the raw material, which has been mixed, and removes the foreign matter mixed with the raw material and removes static electricity. In order to perform this function, the foreign matter removing unit 30 includes a dust removing device 31 and an electrostatic treatment device 33.

The raw material introduced into the foreign material removing unit 30 passes through the dust removing device 31 to remove dust, and then the static electricity is removed by the electrostatic treatment device 33. The structures of the dust removing device 31 and the electrostatic treatment device 33 are shown separately in FIGS. 3 and 4.

3 is a cross-sectional view of the dust removing apparatus illustrated in FIG. 2 separately, and FIG. 4 is a cross-sectional view of the electrostatic treatment apparatus illustrated in FIG. 2.

As shown in Fig. 3, the dust removing device 31 includes a hopper 31a, an inner casing 31b, an outer casing 31e, a vacuum pump 31p, an air blowing chamber 31g, and a blower 31k. And a plurality of air induction plates 31c.

The hopper 31a plays a general role of receiving the raw material input from the conveyor 24 and inducing the inside of the inner casing 31b.

The inner casing 31b is a cylindrical member that is fixed to the lower portion of the hopper 31a and provides a vertical passageway through which the raw material introduced through the hopper falls. Further, a plurality of exhaust holes 31d are formed in the wall surface of the inner casing 31b. The exhaust hole 31d is a through hole opened to the side of the inner casing 31b, and is a passage through which dust inside the inner casing 31b escapes together with air when a negative pressure is formed in the negative pressure space 31f to be described later.

In addition, a plurality of air induction plates 31c are fixed to the inner wall surface of the inner casing 31b. The air induction plate 31c is a ring-shaped member having a predetermined width and thickness and has a structure inclined downward in a state fixed to the inner wall surface of the inner casing 31b. The air induction plate 31c guides the upstream air flow generated in the inner casing 31b so that the air is directed toward the exhaust hole 31d.

The outer casing 31e encloses the inner casing 31b and forms a sound pressure space 31f between the outer casing 31b and the outer circumferential surface thereof. The upper end of the outer casing 31e is fixed to the bottom of the hopper 31a, and the lower end is bent at right angles inward to weld to the inner casing 31b.

The negative pressure space 31f is connected to the vacuum pump 31p. When the vacuum pump 31p is operated, the internal pressure of the negative pressure space 31f decreases, and the dust and air inside the inner casing 31b move to the negative pressure space 31f through the exhaust hole 31d. The dust moved to the negative pressure space 31f is collected in a separate dust pack (not shown) and the air is exhausted.

The air blowing chamber 31g is a cone-shaped member provided in the center lower portion of the inner casing 31b, and its outer circumferential surface is spaced apart from the inner wall surface of the inner casing 31b. Between the air blowing chamber 31g and the inner wall surface is a passage 31n through which the raw material passes downward. The flow cross-sectional area of the passage 31n may vary as necessary. That is, the size and shape of the air blowing chamber 31g can be changed as much as possible. A separate fixing bracket (not shown) may be applied to fix the air ejection chamber 31g to the inner casing 31b.

The air blowing chamber 31g takes the form of a hollow cone and has a plurality of discharge holes 31h. In addition, the end of the air supply pipe 31m enters into the air blowing chamber 31g. The air supply pipe 31m guides the air supplied through the blower 31k into the internal space 31j of the air ejection chamber 31g, and allows the air to flow upward through the discharge hole 31h.

The air that has passed through the discharge hole 31h collides with the raw material falling through the inner casing 31b and separates foreign substances such as dust and the like adhering to the surface of the raw material from the raw material. Since the raw material has its own weight, it is lowered after receiving the pressure of the discharged air once and then passed downwardly through the passage 31n. Dust and air rise up the inner wall of the inner casing 31b and move outward through the negative pressure space 31f. Exit Of course, the blower 31k and the vacuum pump 31p operate at the same time to enable this operation.

On the other hand, the electrostatic treatment device 33 receives the raw material in the state where the dust is removed and passes to the bottom, and serves to remove the static electricity possessed by the raw material and suppress the generation of static electricity. Since the thermoplastic synthetic resin is likely to generate static electricity due to friction, etc., the electrostatic treatment device 33 is applied to prevent dust from sticking to the raw material again.

The electrostatic treatment device 33 is connected to the lower portion of the inner casing 31b, the support casing 33a for guiding the raw material falling through the inner casing 31b, and the processing agent disposed inside the support casing 33a. And a pipe 33b and a treatment agent supply part 33d.

The treatment pipe 33b extends in the longitudinal direction and bends a number of times to take the form of a condenser of a refrigerator. Further, a plurality of injection nozzles 33c are formed in the treatment pipe 33b. The injection nozzle 33c is a jetting means which blows out the processing agent pressurized from the processing agent supply part 33d to the periphery. The electrostatic treatment agent injected through the injection nozzle 33b is in contact with the falling raw material, and removes static electricity and suppresses the generation of static electricity to block recontamination by dust.

The raw material that has passed through the electrostatic treatment device 33 is pulled down through the discharge hopper 35 to the conveyor 37 and supplied to the extrusion unit 40 as shown in FIG. 2.

The extrusion unit 40 is a heat-pressing unit 41 which melts and transfers the received raw material by heating and melting and filtering the raw material supplied through the conveyor 37 and extruding the wire raw material having a predetermined thickness. The filter unit 43 for passing and filtering the flowable raw material in the molten state by the heating and pressing unit 41 and the die flat portion 45 for extracting the flowable raw material filtered by the filter unit 43 in the form of a wire rod. Equipped.

The extrudate (A) made by the extruded portion 40 has a constant thickness, as if noodle noodle noodle is continuously extruded from the die-flat portion 45 is cooled through the cooling unit 50 to be described later.

The heating and pressing part 41 extends in the horizontal direction and has a housing 41b having a hopper 40a at one end thereof, a heater 41d for heating the inside of the housing 41b, and a housing 41b. And a motor 41a for rotating the pressurizing screw 41c and the pressurizing screw 41c which are installed to be rotatable.

When the pressure screw 41c is rotated and the heater 41d heats the housing, and the raw material is introduced through the hopper 40a, the raw material is transferred inside the housing 41b and is in a molten state. The raw material in the molten state is extruded while passing through the die flat portion 45 through the filter device 43 by the action of the pressure screw (41c).

5 is a plan view showing the mounting state of the filter device 43, Figure 6 is an exploded perspective view of the filter device 43.

As shown in the drawing, the filter device 43 is disposed between the heating and pressing portion 41 and the die flat portion 45 to pass the raw material in the molten state toward the die flat portion 45 therein. The filter device 43, the heat pressurizing part 41, and the die flat part 45 communicate with each other through connecting passages 43m and 43n.

The filter device 43 has a basic configuration of a filter case 43a which opens forward through the opening 43c and takes the form of a cylinder, and a filter 44 detachably coupled to the filter case 43a. Have The rear of the filter case 43a is blocked.

In addition, the inlet port 43b and the outlet port 43f are provided in the both end side parts of the filter case 43a. The inlet port 43b is a hole into which the heating passage part 41 side connecting passage 43m is fitted, and the outlet port 43f is a hole in which the die flat part 45 side connecting passage 43n is fixed.

A locking groove 43d is formed in the inner circumferential surface of the opening 43c of the filter case 43a. The locking groove 43d is a groove bent at a right angle to accommodate and lock the locking protrusion 44h to be described later. Reference numeral 43e denotes a position indicator. The position display part 43e is a part which shows the position of the filter case 43a in the 12 o'clock direction, so that it corresponds to the position display part 44g marked on the sealing holder 44e.

On the other hand, the filter 44, the filter net body 44a taking the form of a substantially cylindrical network, and the sealing holder 44e coupled to one end of the filter net body 44a and coupled to the opening 43c. Equipped.

The filter net body 44a is a cylindrical member having a space portion 44d and has a plurality of through holes 44b. Further, at one end of the filter net body 44a, a connection passage fixing frame 44c is provided. The connection passage fixing frame 44c is a portion connected to the connection passage 43m. The connection passage 43m and the connection passage fixing frame 44c are in close contact with each other and can be separated if necessary.

The filter network body 44a is spaced apart from the inner wall surface of the filter case in a state where it is mounted inside the filter case 43a. The reason for the separation is to allow the molten raw material introduced into the space 44d to be easily pulled out of the filter network body 44a through the through hole 44b. The molten raw material which fell out of the filter network body 44a is passed to the die flat part 45 via the connection path 43n.

As a result, the molten raw material passed from the heating and pressing part 41 is introduced into the inner space of the filter net body 44a and then passed through the through hole 44b and is transferred to the die flat part 45 in a filtered state. will be.

The closed holder 44e is a disc-shaped member having a constant diameter and has a plurality of locking protrusions 44h on its outer circumferential surface. The locking projection 44h is caught and locked by the locking groove 43d when the sealing holder 44e is coupled to the filter case 43a.

In order to couple the locking projection 44h to the locking groove 43d, that is, to couple the filter 44 to the filter case 43a, the locking projection 44h is brought into alignment with the tip of the locking groove 43d. After moving the sealing holder 44e toward the filter case 43a, the sealing holder 44e may be rotated in the direction of the arrow a in a state where the sealing holder 44e is no longer entered. When the locking projection 44h reaches the inner end of the locking groove 43d, the position display portion 43e and the position display portion 44g are aligned.

In order to separate the filter 44, the sealing holder 44e may be rotated in the opposite direction and then removed from the filter case 43a.

FIG. 7 is a schematic cross-sectional view for illustrating a modification of the filter device illustrated in FIG. 5.

As shown in FIG. 7, the outer peripheral surface of the filter net body 44a is bent in a zigzag manner along the circumferential direction. By applying the filter net body 44a in the form of a pleated tube in this manner, a part of the filter net body 44a is in contact with the inner circumferential surface of the filter case 43a to become an inner wall support 44k that receives the supporting force. Thus, since the filter network body 44a has the inner wall support part 44k, even if molten raw material flows into the filter network body, there exists no shaking of the filter network body 44a, and it is more stable.

Referring back to FIG. 2, it can be seen that the raw material in the molten state filtered by the filter device 43 is passed through the die flat part 45 and immediately transferred to the cooling part 50. The extrudate A extruded through the die flat portion 45 is in the form of a wire rod of a certain thickness.

The cooling unit 50 includes a plurality of tanks 51 arranged in series to accommodate the coolant 53 and a plurality of guide rollers positioned at the upper portion of the tank 51 to guide linear movement of the extrudate A. And 55. The extrudate A is supported by the guide roller 55, and is cooled by repeatedly passing the cooling water 53 during transportation.

The extrudate A cooled by the cooling unit 50 passes through the notch forming unit 60. The notch forming part 60 serves to form the notch part N of a predetermined pitch in the extrudate A before entering into the cutting part 71. The reason for forming the notch portion N in the extrudate A is to increase the cutting efficiency.

The notch forming part 60 has a pair of shaping rollers 63 formed with teeth 63a on the outer circumferential surface and passing the extrudate A therebetween. Of course, the distance between the outer peripheral surface of the molding roller 63 should be smaller than the thickness of the extrudate. In addition, a separate drive motor (not shown) is applied to rotate the forming roller 63.

The cutting part 70 is a part which cuts the extrudate A which passed through the notch formation part 60 to a fixed size, and semi-products. The part cut | disconnected by the cutting part 70 is the above-mentioned notch part N of course. This means that the size of the semifinished product is very uniform.

The semi-finished product obtained by the cutting unit 70 is transferred to the first bagging unit 80 through the conveying pipe 85. The transfer pipe 85 is a pipe for supplying the semi-finished product supplied from the cutting unit 70 to the first bagging unit 80, and has an air pump 83 at one end thereof. The air pump 83 pushes the semi-finished product in the conveying pipe 85 with the force of air and sends it to the first bagging part 80.

The first bagging part 80 also takes the form of a silo, and supplies the semi-finished product supplied through the conveying pipe 85 to the transport bag Z waiting at the bottom. The semi-finished product in the carry bag (Z) is shipped to the consumer.

Meanwhile, a blending unit 90 and a second bagging unit 100 are disposed downstream of the first bagging unit. The blending unit 90 serves to mix, ie blend, the semi-products bagged in the plurality of transport bags prepared through the first bagging unit 80.

Blending of the semifinished product is performed when the physical properties of the semifinished product contained in each transport bag are slightly different. For example, if the physical properties of the semi-finished products contained in each of the five carry bags (Z) are slightly different for each carry bag, the semi-finished products contained in the five carry bags are put into one space and stirred, so that the overall leveled and uniform properties To have.

8 illustrates the blending unit 90 separately.

As illustrated, the blending unit 90 includes a main body 91, an input hopper 93, and a blender 95.

The main body 91 is formed of a cylindrical portion 91a having a constant diameter and a funnel portion 91b integrally formed with the lower portion of the cylindrical portion 91a and taking the form of a funnel and having a flow port 91d at its lower end. . The upper end of the cylindrical part 91a is sealed.

In particular, at least one bypass hole 91c is formed in the funnel portion 91b. The bypass hole 91c is a hole for guiding a part of the semi-finished product which overflows from the upper end of the screw case 95d in the direction of the arrow e.

The semi-finished product discharged in the direction of the arrow e is guided to the input hopper 93 and guided to the bottom 93b. The bottom portion 93b is a bottom surface of the feed hopper 93, and a lower end portion of the blending screw 95c is supported to be rotatable. The semi-finished product descending to the bottom 93b is pumped up into the screw case 95d by the action of the blending screw 95c.

The reason why the bypass hole 91c is formed in this way is to eliminate the bottleneck between the lower end of the screw case 95d and the funnel 91b. As shown in Fig. 8, since the gap between the lower end of the screw case 95d and the funnel portion 91b is not wide enough, the bypass hole 91c can move smoothly in the direction of arrow d of the semi-finished product. Efficient blending itself is impossible.

In the present embodiment, by additionally forming a bypass hole 91c, a part of the semi-finished product dropped to the lower part is passed through the bypass hole 91c, and the other part is provided in the blending screw 95c through a gap between the lower end portion of the screw case 95d. Since the upstream and downstream flow of the semi-finished product is balanced, smooth and fast blending is achieved.

The inlet hopper 93 is an inlet unit arranged at the lower side of the main body 91 and guides the semi-finished product introduced from the outside to the lower portion of the flow port 91d through the supply passage 93a. While the blending is in progress after the addition of the semifinished product is completed, the supply passage 93a is used as the circulation path of the semifinished product as mentioned above.

In addition, the blender 95 includes a screw case 95d fixed vertically to the inner center of the main body 91 and a blending screw 95c provided in the screw case 95d so as to be rotatable. The screw case 95d is supported by the plurality of supports 92 and maintains a certain height at the top of the flow port 91d. The upper end of the blending screw 95c is supported at the center of the ceiling of the main body 91, and the lower end of the blending screw 95c is supported to allow the bottom 93b to be rotated.

The blending screw 95c is axially rotated by two motors 95a and 95b. One motor 95a of the two motors is disposed above the main body 91, and the other motor 95b is fixed to the lower portion of the input hopper 93.

On the other hand, the second bagging unit 100, bagging the semi-finished product blended by the blending unit 90 back to the carrying bag (Z), and has a pump (100a) and the induction pipe (100b). The induction pipe 100b is a pipe whose one end is connected to the lower part of the input hopper 93 and extended to a bagging place. In addition, the pump 100a generates a transport air to guide the semi-finished product to the carrying bag Z.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

10: Semi-Production apparatus 20: Raw material mixing unit 21: Mixing chamber
23, 24: Conveyor 30: Foreign material removal unit 31: Dust removal device
31a: Hopper 31b: Inner casing 31c: Air induction plate
31d: exhaust hole 31e: outer casing 31f: sound pressure space
31g: Air ejection chamber 31h: Outlet hole 31j: Inner space
31k: Blower 31m: Air supply pipe 31n: Passage
31p: vacuum pump 33: electrostatic treatment device 33a: support casing
33b: treatment agent pipe 33c: spray nozzle 33d: treatment agent supply unit
35: discharge hopper 37: conveyor 40: extrusion part
40a: Hopper 41: Heating and pressing part 41a: Motor
41b: housing 41c: pressurized screw 41d: heater
43: filter device 43a: filter case 43b: inlet
43c: Opening 43d: Locking groove 43e: Position display
43f: outlet 43m, 43n: connecting passage 44: filter
44a: filter body 44b: through hole 44c: connecting passage fixing frame
44d: space 44e: airtight holder 44g: position display
44h: locking protrusion 44k: inner wall support 45: die flat portion
50: cooling part 51: water tank 53: cooling water
55: guide roller 60: notch forming portion 63: molding roller
63a: tooth 70: cutting portion 80: first bagging portion
83: air pump 85: transfer pipe 90: blending unit
91: main body 91a: cylinder 91b: funnel
91c: bypass hole 91d: flow port 92: support
93: feed hopper 93a: supply passage 93b: bottom
95: blender 95a, 96b: motor 95c: blending screw
95d: screw case 100: second bagging part 100a: pump
100b: induction pipe

Claims (7)

A raw material mixing unit for mixing the synthetic resin raw material supplied from the outside;
A foreign material removing unit for passing foreign materials mixed with the raw materials by the raw material mixing unit and removing foreign substances mixed in the raw materials;
After heating and melting and filtering the raw material from which the foreign substances have been removed by the foreign material removing unit, and extruding it in the form of a wire rod having a certain thickness, the heating press unit for melting and conveying the received raw material, melted by the heating press unit A filter unit for passing and filtering the flowable raw material in a closed state, and an extrusion unit having a die flat portion for extracting the flowable raw material filtered by the filter device into a wire rod form;
A cooling unit including a water tank accommodating cooling water, the cooling unit configured to cool the extrudate extruded from the extrusion unit by cooling water;
A cutting part which passes the extrudate cooled by the cooling part and cuts it into a predetermined size and semi-products;
It includes a first bagging portion for receiving the semi-finished product discharged from the cutting portion and put in a carrying bag,
The foreign material removal unit, to remove the dust and static electricity mixed in the raw material,
A dust removal device which separates dust from the raw material by injecting air into the input raw material, and an electrostatic treatment device that removes static electricity of the raw material by adding an electrostatic treatment agent to the raw material that has passed through the dust removing device,
The dust removal device is;
Hopper for receiving the raw material from the raw material mixing unit,
An inner casing disposed under the hopper and providing a vertical passage through which raw materials fall, and having a plurality of vent holes opened to the side;
An outer casing surrounding the inner casing and providing a sound pressure space between the inner casing and the outer peripheral surface of the inner casing;
A vacuum pump which forms a negative pressure in the negative pressure space of the outer casing and guides the air inside the inner casing to the negative pressure space,
An air ejection chamber installed inside the inner casing, spaced from an inner circumferential surface of the inner casing, and having a plurality of discharge holes formed therein;
A blower for pressurizing air into the air blowing chamber to blow dust through the discharge hole and to hit dust falling between the air blowing chamber and the inner circumferential surface of the inner casing to remove dust;
It is fixed to the inner circumferential surface of the inner casing, and includes a plurality of air induction plate for guiding air ejected from the air blowing chamber to the exhaust hole side,
The electrostatic treatment device;
A support casing connected to a lower portion of the inner casing to induce a raw material that falls down through the inner casing;
A treatment pipe disposed in the support casing and having a plurality of injection nozzles;
And a treatment agent supply unit for injecting an electrostatic treatment agent into the treatment agent pipe and injecting the electrostatic treatment agent through the injection nozzle to contact the raw material. The method of claim 1,
A blending unit disposed downstream of the first bagging unit and configured to receive and mix semi-finished products bagged in a plurality of carrying bags therein;
And a second bagging unit for repackaging the semi-finished product blended by the blending unit in a carrying bag. delete The method of claim 1,
The filter device;
A filter case communicating with the heating pressurizing portion through the inlet port and the die flat portion through the outlet port, and having an opening at one end thereof;
A filter having a plurality of through-holes mounted in the filter case and receiving the flowable material in the molten state introduced through the inlet into the inside and then exiting the outlet, passing through the flowable material and filtering out the impurities. Mannequin,
Recycling synthetic resin semi-finished device comprising a closed holder coupled to the filter network and detachably mounted to the opening of the filter case to seal the inner space of the filter case. The method of claim 4, wherein
The filter network body,
Recycled synthetic resin semi-finished product taking the form of a cylindrical tube spaced from the inner circumferential surface of the filter case, or a portion thereof is in contact with the inner circumferential surface of the filter case in the form of a pleated tube. The method of claim 2,
The blending unit;
A main body consisting of a cylindrical part having a constant diameter, a funnel part integral with the lower part of the cylindrical part, taking the form of a funnel and having a flow port at the bottom thereof;
An input hopper disposed at a lower side of the main body to guide the semi-finished product introduced from the outside to a lower portion of the flow port through a supply passage;
A vertically disposed inside the main body and blended in a manner of freely dropping the semi-finished product introduced through the input hopper to the top, the screw case disposed vertically on the upper portion of the flow port, the axis of rotation inside the screw case A blender having a blending screw installed at the bottom thereof and supported by the bottom portion of the input hopper and having a top end supported by a cylindrical portion thereof,
Rotating the blending screw is provided with a motor to convey the object introduced through the feed hopper to fall from the upper end of the screw case,
Recycling synthetic resin semi-finished product formed with a bypass hole in the funnel portion to discharge a portion of the semi-finished product dropped from the upper end of the screw case to the outside of the funnel to bypass the supply passage of the hopper. The method of claim 1,
Between the cooling part and the cutting part, a notch having a constant pitch is formed in the extrudate entering the cutting part, the notch forming part having a pair of forming rollers having teeth formed on the outer circumferential surface and passing the extrudate therebetween is further provided. Recycled synthetic resin semifinished product.

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