Self-cooling double-screw extruder

Abstract

The utility model discloses a self-cooling double-screw extruder, and belongs to the technical field of double-screw extruders, the self-cooling double-screw extruder comprises an extruder main body, a feed hopper is fixedly mounted at a feed port of the extruder main body, a discharge mechanism is arranged at a discharge port of the extruder main body, and two screws are arranged in the extruder main body in parallel; a driving unit for driving the screw rod to rotate is fixedly mounted on the outer wall of the extruder main body; cooling liquid in the water storage tank is pumped out through the circulating pump and conveyed to the water sprayer through the circulating pipe, and the cooling liquid is sprayed to the outer surface of the extruder main body through cooperation of the water sprayer and the spray head to flow so as to cool the extruder main body; cooling liquid flowing down from the outer surface of the extruder body falls into the water storage tank through the water outlet to be recycled, resource waste is avoided, the existing environmental protection concept is met, the water cooling tank is formed by combining and splicing the first splicing piece and the second splicing piece, so that the device is convenient to overhaul, and the cooling device is simple in structure, low in cost and high in practicability. The popularization is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of double screw extruders, in particular to a self-cooling double screw extruder. BACKGROUND

[0002] At present, in the plastic processing industry, double screw extruders are widely used in the production of various plastic products due to their excellent mixing ability and high production efficiency. With the growth of market demand and the progress of technology, the efficiency of the extruder is also continuously improved, especially under high temperature processing conditions, how to effectively dissipate heat becomes one of the key factors to improve product quality and reduce energy consumption.

[0003] The existing double screw extruder heat dissipation technology generally has problems such as high cost and inconvenient maintenance, which cannot meet the current market demand for efficient, environmentally friendly and low-cost production equipment, so the self-cooling double screw extruder needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] In view of the shortcomings of the prior art, the present application provides a self-cooling double screw extruder, which overcomes the shortcomings of the prior art and aims to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a self-cooling double screw extruder, comprising an extruder body, a feeding hopper is fixedly installed at the feeding port of the extruder body, a discharging mechanism is arranged at the discharging port of the extruder body, two screw rods are arranged in parallel inside the extruder body, a driving unit for driving the rotation of the screw rod is fixedly installed on the outer wall of the extruder body, a water cooling box is fixedly sleeved on one side of the outer surface of the extruder body close to the discharging mechanism, the water cooling box is composed of a splicing piece one and a splicing piece two, a water sprayer is inlaidly installed on the top of the splicing piece one, a plurality of spray heads are fixedly installed on the lower surface of the water sprayer, a water outlet is penetratingly arranged at the bottom of the splicing piece two, a water storage tank is placed below the water outlet, a circulating pump is arranged in the water storage tank, and the circulating pump is communicated with the water sprayer through a circulating pipe.

[0006] By adopting the above technical scheme, the cooling liquid in the water storage tank is pumped out by the circulating pump and delivered to the water sprayer through the circulating pipe, and the cooling liquid is sprayed onto the outer surface of the extruder body through the cooperation between the water sprayer and the spray head to flow and cool it. The cooling liquid flowing down from the outer surface of the extruder body falls into the inside of the water storage tank through the water outlet for recycling, avoiding resource waste and meeting the existing environmental protection concept. Since the water cooling box is composed of the splicing piece one and the splicing piece two, the device is convenient to overhaul, and the cooling device has simple structure and low cost, which is suitable for promotion.

[0007] As a preferred technical solution of the present application, the two side outer walls of the splicing piece one and the splicing piece two are symmetrically connected with a plurality of connecting blocks, and the upper and lower adjacent two connecting blocks are fixedly connected together through connecting bolts.

[0008] By adopting the above technical solution, the splicing piece one and the splicing piece two are fixedly assembled together through the cooperation between the connecting blocks and the connecting bolts to form a complete water-cooled box whole.

[0009] As a preferred technical solution of the present application, the inner walls of the splicing piece one and the splicing piece two are fixedly connected with sealing pads, which are made of rubber material and located between the water-cooled box and the extruder body.

[0010] By adopting the above technical solution, the sealing pads ensure the sealing property of the connection between the water-cooled box and the extruder body, avoiding water leakage.

[0011] As a preferred technical solution of the present application, the driving unit comprises a U-shaped frame fixedly installed on the outer wall of the extruder body, a driving motor fixedly installed on the outer wall of the U-shaped frame, a gear one fixedly installed on the output end of the driving motor and inserted into the inside of the U-shaped frame, two gears two symmetrically meshed connected on the two sides of the gear one, and a screw rod with the gear two fixedly sleeved on the outer surface thereof.

[0012] By adopting the above technical solution, since the gear one is meshed with the gear two, the two screw rods can be simultaneously driven to rotate by the driving motor.

[0013] As a preferred technical solution of the present application, the inside of the feeding hopper is rotatably connected with a stirring rod, the outer wall of the feeding hopper is fixedly installed with a stirring motor for driving the stirring rod to rotate, and the outer surface of the stirring rod is fixedly connected with a plurality of stirring blades.

[0014] By adopting the above technical solution, the stirring rod drives the plurality of stirring blades to rotate in the inside of the feeding hopper under the driving action of the stirring motor, so as to scatter and stir the materials in the feeding hopper, prevent the materials from being accumulated, improve the mixing uniformity of the materials, and ensure that the materials can be continuously and uniformly discharged.

[0015] As a preferred technical solution of the present application, the lower surface of the extruder body is fixedly installed with a heating box near one side of the driving unit, and the inside of the heating box is provided with a heating rod.

[0016] By adopting the above technical solution, the heating rod is arranged in the inside of the heating box to heat the extruder body, so as to ensure that the materials in the extruder body can be fully melted.

[0017] As a preferred technical scheme of the present application, the splicing piece one, the splicing piece two and the connecting block are all made of stainless steel.

[0018] By adopting the above technical scheme, the stainless steel material has strong corrosion resistance, so that the splicing piece one, the splicing piece two and the connecting block prepared thereby are not easy to corrode and have long service life.

[0019] Compared with the prior art, the present application has the beneficial effects that:

[0020] 1. In the present application, the cooling liquid in the water storage tank is pumped out through the circulating pipe and delivered to the water sprayer through the circulating pump, and the cooling liquid is sprayed onto the outer surface of the extruder body through the cooperation between the water sprayer and the spray head to flow and cool down, and the cooling liquid flowing down from the outer surface of the extruder body falls into the inside of the water storage tank through the water outlet for recycling, avoiding resource waste and conforming to the existing environmental protection concept. Since the water cooling tank is combined and spliced by the splicing piece one and the splicing piece two, the device is easy to maintain, the cooling device has simple structure and low cost, and is suitable for promotion.

[0021] 2. In the present application, the stirring rod drives a plurality of stirring blades to rotate in the inside of the feeding hopper under the driving action of the stirring motor, disperses and stirs the materials in the feeding hopper, prevents the materials from accumulating, improves the mixing uniformity of the materials, and ensures that the materials can be continuously and uniformly discharged.

[0022] The specific embodiments of the present application are disclosed in detail in the following description and drawings, and the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 It is a schematic diagram of the local structure of the present application;

[0026] Figure 3 It is a schematic diagram of the composition structure of the driving unit of the present application;

[0027] Figure 4 It is a schematic diagram of the internal structure of the feeding hopper of the present application.

[0028] In the figure: 1, extruder main body; 2, discharge mechanism; 3, feed hopper; 4, screw; 5, drive unit; 501, U-shaped frame; 502, drive motor; 503, gear one; 504, gear two; 6, heating box; 7, water cooling box; 71, splicing piece one; 72, splicing piece two; 73, connecting block; 74, gasket; 8, water sprayer; 9, spray head; 10, water outlet; 11, water storage tank; 12, circulating pump; 13, circulating pipe; 14, stirring rod; 15, stirring blade; 16, stirring motor. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0030] As shown in the figure, Figure 1 - Figure 4 The utility model provides a self -cooling double screw extruder, including extruder main body 1, the feed inlet fixed mounting of extruder main body 1 has feed hopper 3, and the discharge mechanism 2 is provided to the discharge port of extruder main body 1, and the inside parallel of extruder main body 1 is provided with two screws 4, and the outer wall of extruder main body 1 is fixedly installed drive unit 5 that drives screw 4 rotates, and the outer surface of extruder main body 1 is fixedly sleeved with water cooling box 7 on the side close to discharge mechanism 2, and water cooling box 7 is combined by splicing piece one 71 and splicing piece two 72, and splicing piece one 71 is inlaidly installed with water sprayer 8 on the top, and the lower surface of water sprayer 8 is fixedly installed with a plurality of spray heads 9, and the bottom of splicing piece two 72 is provided with water outlet 10, and water storage tank 11 is placed below water outlet 10, and the inside of water storage tank 11 is provided with circulating pump 12, and circulating pump 12 is communicated with water sprayer 8 through circulating pipe 13, when using, the cooling liquid in water storage tank 11 is extracted and is delivered to water sprayer 8 through circulating pipe 13 by circulating pump 12, and the cooling liquid is sprayed to the outer surface of extruder main body 1 and flows by the cooperation between water sprayer 8 and spray head 9, and is cooled, and the cooling liquid that flows down from the outer surface of extruder main body 1 falls to the inside of water storage tank 11 through water outlet 10 and is recycled, avoids resource waste, and accords with the existing environmental protection concept, because water cooling box 7 is combined by splicing piece one 71 and splicing piece two 72, makes the device convenient to overhaul, and the cooling device structure is simple, and the cost is low, is suitable for promotion.

[0031] In the embodiment, as shown in the figure, Figure 2 The two side outer walls of splicing piece one 71 and splicing piece two 72 are symmetrically connected with a plurality of connecting blocks 73, and the upper and lower adjacent two connecting blocks 73 are fixedly connected together through connecting bolts, and in use, splicing piece one 71 and splicing piece two 72 are fixedly assembled together to form a complete water cooling box 7 whole through the cooperation between connecting block 73 and connecting bolt.

[0032] In this embodiment, as Figure 2 As shown, both splice 1 71 and splice 2 72 have sealing gaskets 74 fixedly connected to their inner walls. The sealing gaskets 74 are made of rubber material and are located between the water cooling box 7 and the extruder body 1. During use, the sealing gaskets 74 are used to ensure the sealing of the connection between the water cooling box 7 and the extruder body 1, thus preventing water leakage.

[0033] In this embodiment, as Figure 3 As shown, the drive unit 5 includes a U-shaped frame 501 fixedly installed on the outer wall of the extruder body 1. A drive motor 502 is fixedly installed on the outer wall of the U-shaped frame 501. The output end of the drive motor 502 is inserted into the interior of the U-shaped frame 501 and a gear 503 is fixedly installed thereon. Gears 504 are meshed on both sides of the gear 503. The gears 504 are fixedly sleeved on the outer surface of the screw 4. In use, since the gears 503 and 504 mesh, the drive motor 502 can drive the two screws 4 to rotate simultaneously.

[0034] In this embodiment, as Figure 4 As shown, a stirring rod 14 is rotatably connected inside the feed hopper 3, and a stirring motor 16 that drives the stirring rod 14 to rotate is fixedly installed on the outer wall of the feed hopper 3. Several stirring blades 15 are fixedly connected to the outer surface of the stirring rod 14. In use, the stirring rod 14 drives the several stirring blades 15 to rotate inside the feed hopper 3 under the driving action of the stirring motor 16, which disperses and stirs the material in the feed hopper 3, prevents the material from accumulating, and improves the uniformity of the material mixing, ensuring that the material can be continuously and uniformly fed.

[0035] In this embodiment, as Figure 1 As shown, a heating box 6 is fixedly installed on the lower surface of the extruder body 1 near the drive unit 5. A heating rod is installed inside the heating box 6. During use, the heating rod inside the heating box 6 heats the extruder body 1 to ensure that the material inside the extruder body 1 can be fully melted.

[0036] In this embodiment, as Figure 2 As shown, splicing component 1 71, splicing component 2 72 and connecting block 73 are all made of stainless steel. Stainless steel has strong corrosion resistance, so the splicing component 1 71, splicing component 2 72 and connecting block 73 prepared in this way are not easily corroded and have a long service life.

[0037] The working principle of the utility model is: when using the self-cooling double-screw extruder, the cooling liquid in the water storage tank 11 is pumped out by the circulating pump 12 and is delivered to the water sprayer 8 through the circulating pipe 13, the cooling liquid is sprayed onto the outer surface of the extruder main body 1 through the cooperation between the water sprayer 8 and the spray head 9 to flow and cool, the cooling liquid flowing down from the outer surface of the extruder main body 1 falls into the inside of the water storage tank 11 through the water outlet 10 to be recycled, resource waste is avoided, the existing environmental protection concept is met, the water cooling tank 7 is combined and spliced by the splicing piece one 71 and the splicing piece two 72, so that the device is convenient to overhaul, the cooling device is simple in structure, low in cost and suitable for promotion.

[0038] In the description of the utility model, it needs to be explained that the directions or position relations of the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.

[0039] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to specific conditions.

[0040] The utility model has been described above in combination with specific embodiments, but those skilled in the art should know that these descriptions are exemplary and are not a limitation on the protection scope of the utility model. Those skilled in the art can make various modifications and changes to the utility model according to the spirit and principles of the utility model, and these modifications and changes are also within the scope of the utility model.

Claims

1. A self-cooled twin-screw extruder, comprising an extruder body (1), characterized in that, The extruder body (1) has a feed hopper (3) fixedly installed at its feed inlet, and a discharge mechanism (2) provided at its discharge outlet. Two screws (4) are arranged parallel inside the extruder body (1). A drive unit (5) for rotating the screws (4) is fixedly installed on the outer wall of the extruder body (1). A water-cooled box (7) is fixedly fitted onto the outer surface of the extruder body (1) near the discharge mechanism (2). The water-cooled box (7) is composed of a splicing component (71). It is composed of splicing component 1 (71) and splicing component 2 (72). A water sprayer (8) is inlaid on the top of splicing component 1 (71). Several nozzles (9) are fixedly installed on the lower surface of the water sprayer (8). A water outlet (10) is opened through the bottom of splicing component 2 (72). A water storage tank (11) is placed below the water outlet (10). A circulation pump (12) is installed inside the water storage tank (11). The circulation pump (12) is connected to the water sprayer (8) through the circulation pipe (13).

2. The self-cooling twin-screw extruder according to claim 1, characterized in that, Both sides of the outer walls of the first splice (71) and the second splice (72) are symmetrically connected with several connecting blocks (73), and two adjacent connecting blocks (73) are fixedly connected together by connecting bolts.

3. The self-cooling twin-screw extruder according to claim 1, characterized in that, The inner walls of both splice one (71) and splice two (72) are fixedly connected with sealing gaskets (74), which are made of rubber material and located between the water cooling box (7) and the extruder body (1).

4. The self-cooling twin-screw extruder according to claim 1, characterized in that, The drive unit (5) includes a U-shaped frame (501) fixedly installed on the outer wall of the extruder body (1). A drive motor (502) is fixedly installed on the outer wall of the U-shaped frame (501). The output end of the drive motor (502) is inserted into the interior of the U-shaped frame (501) and a gear one (503) is fixedly installed thereon. Gear two (504) is meshed on both sides of the gear one (503). The gear two (504) is fixedly sleeved on the outer surface of the screw (4).

5. A self-cooling twin-screw extruder according to claim 1, characterized in that, The feed hopper (3) is rotatably connected to a stirring rod (14), and a stirring motor (16) for driving the stirring rod (14) to rotate is fixedly installed on the outer wall of the feed hopper (3). Several stirring blades (15) are fixedly connected to the outer surface of the stirring rod (14).

6. A self-cooling twin-screw extruder according to claim 1, characterized in that, A heating box (6) is fixedly installed on the lower surface of the extruder body (1) near the drive unit (5), and a heating rod is provided inside the heating box (6).

7. A self-cooling twin-screw extruder according to claim 2, characterized in that, The first splicing component (71), the second splicing component (72), and the connecting block (73) are all made of stainless steel.

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