Small-sized high-shear single-screw extruder

Abstract

The utility model belongs to the field of single-screw extruders, in particular relates to a small-sized high-shear single-screw extruder, and aims to solve the problems that in the process of extruding plastic products by the conventional single-screw extruder, the extruded products are generally cooled and shaped in a cold water showering manner or in a water tank, and the extrusion efficiency is low. In order to solve the problems that most of water on the surface of a product cannot be blown away after water cooling, dust and other impurities are prone to being adhered to the product during discharging, and the quality is reduced, the following scheme is provided that the device comprises a machine table, an extrusion cylinder is fixedly arranged at the top of the machine table, and a hopper is welded to the top of the extrusion cylinder; the surface of the cooled product is blown through the blowing-off mechanism, most of water on the surface of the product is effectively blown off, water residues are reduced, the situation that the product is stained with dust and other impurities due to excessive water is avoided, the product quality is improved, the product can be cut off through the cutting-off mechanism, and follow-up treatment is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to single screw extruder technical field especially small high shear single screw extruder. BACKGROUND

[0002] Single screw extruder, with single screw, the solid forming material (mainly for thermoplastic resin) continuous melt, compression, extrusion, the mechanical of forming, single screw extruder has higher shear force, is the most commonly used extruder, due to simple structure, low price, convenient operation, is widely used in plastic processing on industry.

[0003] The existing single screw extruder has the following shortcomings when in use:

[0004] The existing single screw extruder in the process of extruding plastic products, the product extruded is usually through the way of showering or cooling and setting the product from the water tank, however, after water cooling, most of the water on the product surface cannot be blown off, and when discharging, dust and other impurities are easily adhered, reducing the quality. UTILITY MODEL CONTENTS

[0005] The utility model discloses a small high shear single screw extruder, which solves the problem of the existing single screw extruder in the prior art, which cannot blow off most of the water on the product surface after water cooling, and which is prone to adhere to dust and other impurities when discharging, thereby reducing the quality.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] Small high shear single screw extruder, including the machine table, the top of machine table is fixedly arranged with extrusion cylinder, the top of extrusion cylinder is welded with hopper, the inner wall of both ends of extrusion cylinder is rotatably arranged with same screw for extruding and conveying, the side of extrusion cylinder is fixedly arranged with second motor, and the output end of second motor penetrates through the side of extrusion cylinder and is fixedly connected with one end of screw, and the one end of extrusion cylinder is fixedly arranged with extrusion pipe and is connected, the side of machine table is equipped with water tank on the ground, the water tank is equipped with conveying assembly for cooling and setting down the extruded product,

[0008] The water tank is provided with a blowing mechanism, and the conveying assembly sprays water to cool and set down the product after extrusion, and the blowing mechanism blows off most of the water on the product surface.

[0009] In order to facilitate the cutting of the product, the water tank further comprises a cutting mechanism, which can cut the product after blowing off most of the water.

[0010] In a possible design, the conveying assembly comprises a water pump and a tank, one side of the tank is fixedly provided with a mounting plate, the bottom of the water pump is fixedly connected to the top of the mounting plate, the inner walls of the two sides of the tank are welded with a same first fixing plate, the first fixing plate is T-shaped, the top of the first fixing plate is fixedly provided with a ring body, the ring body is hollow, the top of the ring body is fixedly provided with two fixing blocks, the bottom of the tank is fixedly connected to the top of the two fixing blocks, the bottom of the tank is fixedly provided with three connecting pipes in communication, the three connecting pipes are fixedly connected to the three sides of the ring body in communication, the inner wall of the ring body is fixedly provided with a plurality of nozzles arranged in a ring array, the input port of the water pump is fixedly provided with a water suction pipe, one end of the water suction pipe is fixedly connected to the bottom of one side of the tank in communication, the output port of the water pump is fixedly provided with a first pipeline, one side of the first pipeline is fixedly connected to one side of the tank, and one end of the first pipeline is fixedly connected to one side of the tank in communication, and the extrusion pipe is located at the center of the ring body.

[0011] In a possible design, the blowing mechanism comprises a second fixing plate, a blowing ring and a fan, the two ends of the second fixing plate are fixedly connected to the inner walls of the two sides of the tank, the second fixing plate is T-shaped, the bottom of the blowing ring is fixedly connected to the top of the second fixing plate, the blowing ring is hollow, the inner wall of the blowing ring is fixedly provided with a plurality of blow nozzles in communication, the blow nozzles are arranged in a ring array, the blow nozzles are inclined, the blowing ring and the ring body are horizontally the same, and the blowing port of the fan is fixedly connected to the top of the blowing ring in communication.

[0012] In a possible design, the cutting mechanism comprises a frame, an electric push rod and a blade, one side of the frame is fixedly connected to one side of the tank, one end of the electric push rod is fixedly connected to the bottom of the frame, the telescopic part of the electric push rod penetrates through the frame and is fixedly provided with a blade seat, the blade is fixed on the blade seat through bolts, and the inner walls of the two sides of the frame are fixedly provided with a same baffle for cooperating with the blade.

[0013] In a possible design, the top of the hopper is fixedly provided with a connecting plate, the top of the connecting plate is fixedly provided with a first motor, the output end of the first motor penetrates through the bottom of the connecting plate, the output end of the first motor is fixedly provided with a conveying rod, and the conveying rod is welded with helical conveying leaves for preventing blockage.

[0014] In a possible design, the bottom of the tank is fixedly provided with a refrigerator for cooling water in the tank, and the bottom of one side of the tank is fixedly provided with a drain pipe facilitating replacement of water, and the drain pipe is provided with a valve.

[0015] In one possible design, a cavity is formed in the extrusion cylinder, and a heating element is fixedly arranged on the inner wall of the cavity for heating the plastic raw material.

[0016] In use, a proper amount of water is added into the water tank, the refrigerator is turned on to cool the water in the water tank to keep the water temperature within a proper range (the material of the water tank is a heat-conductive metal material), the plastic raw material is added into the hopper, the rotation of the screw conveying blade prevents the raw material from being blocked and smoothly sends the raw material into the extrusion cylinder, the second motor is started to drive the screw to rotate in the extrusion cylinder, the rotation of the screw shears and extrudes the plastic raw material to gradually soften and move to the extrusion pipe through the extrusion cylinder, the heating element heats the plastic raw material in the cavity of the extrusion cylinder to further soften and plasticize the plastic raw material, the plasticized plastic raw material is extruded through the extrusion pipe to form a continuous product, the water pump is started to draw the cooling water from the water tank through the water suction pipe and send the cooling water into the box through the first pipeline, the cooling water enters the ring through the connecting pipe at the bottom of the box and is sprayed through the multiple nozzles in the inner wall of the ring to spray and cool the extruded product (the sprayed water drops into the water tank for recycling), the surface of the cooled product is wet, at this time, the air blower is started to make the blowing port of the air blower communicate with the blowing nozzle through the blowing ring and blow air flow, the blowing nozzle is arranged in an annular array and is inclined, which can effectively blow most of the water on the surface of the product (the water is blown to the ring direction all the time), so that most of the water on the product can be blown off and dried to reduce the possibility of sticking to dust and other impurities and improve the product quality, when the product reaches the required length, the electric push rod is started to make the extension part of the electric push rod push the knife holder and the knife upward, the knife cooperates with the baffles on the two sides of the frame to cut the product into the required length, and the cut product can be further processed through subsequent processes, wherein the heating element can be one of an electric heating plate and an electric heating wire, and it should be noted that the first motor, the second motor, the heating element, the air blower, the water pump, the refrigerator and the electric push rod need to be controlled by an external controller and powered by an external power supply.

[0017] The small high-shear single-screw extruder has the following beneficial effects:

[0018] In the small high-shear single-screw extruder, the fan and the blowing nozzle are used to blow air to the surface of the cooled product, most of the water on the surface of the product is effectively blown off, the water residue is reduced, the product is prevented from sticking to dust and other impurities due to excessive water, and the product quality is improved.

[0019] In the small high-shear single-screw extruder, the water pump and the nozzles in the conveying assembly are arranged to comprehensively and uniformly spray and cool the extruded product, and the cooling efficiency is effectively improved.

[0020] The utility model discloses a small -size high shear single screw extruder, through cutting mechanism, adopt electric push rod drive blade to cut, easy operation, cutting effect is good, and the blade is used in cooperation with the baffle, has guaranteed the accuracy and stability of cutting, has met the cutting demand of different length product.

[0021] In the utility model, the blowing mechanism is used for blowing the surface of the cooled product, effectively blowing most of the moisture on the surface of the product, reducing the moisture residue, avoiding the product from sticking to dust and other impurities due to excessive moisture, improving the product quality, and the cutting mechanism can cut the product for subsequent processing. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is the front view structural schematic diagram of small -size high shear single screw extruder that the utility model proposes;

[0023] Fig. 2 It is the side view structural schematic diagram of small -size high shear single screw extruder that the utility model proposes;

[0024] Fig. 3 It is the front view structural schematic diagram of small -size high shear single screw extruder that the utility model proposes;

[0025] Fig. 4 It is the extrusion cylinder part sectional view structural schematic diagram of small -size high shear single screw extruder that the utility model proposes;

[0026] Fig. 5 It is the partial structure schematic diagram of small -size high shear single screw extruder that the utility model proposes;

[0027] Fig. 6 It is the hopper sectional view structural schematic diagram of small -size high shear single screw extruder that the utility model proposes.

[0028] In the drawing: 1, machine table;2, extrusion cylinder;3, hopper;4, connecting plate;5, first motor;6, water tank;7, first pipeline;8, water pump;9, frame;10, box;11, tool holder;12, electric push rod;13, baffle;14, refrigerator;15, heating piece;16, spiral conveying blade;17, extrusion pipe;18, blowing ring;19, connecting pipe;20, fan;21, blowing nozzle;22, blade;23, first fixed plate. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0030] Embodiment one

[0031] Referring to Figs. 1-6 The small high-shear single screw extruder is applied in the field of single screw extruder, comprising a machine table 1, an extrusion cylinder 2, a hopper 3, a second motor, an extrusion pipe 17 and a water tank 6 and the like. The machine table 1 is made of stable metal material and serves as the support base of the whole device. The extrusion cylinder 2 is fixedly arranged on the top of the machine table 1, and a screw for extrusion and conveying is rotatably arranged on the inner wall of the two ends of the extrusion cylinder 2. The screw rotates in the extrusion cylinder 2 to extrude and convey the plastic raw material to the extrusion pipe 17. The hopper 3 is welded on the top of the extrusion cylinder 2 and is used for adding plastic raw material. The second motor is fixedly arranged on one side of the extrusion cylinder 2, and the output end penetrates the extrusion cylinder 2 and is fixedly connected with one end of the screw to provide rotating power for the screw. The extrusion pipe 17 is fixedly arranged on one end of the extrusion cylinder 2 and is connected with the inside of the extrusion cylinder 2 to extrude the plasticized plastic product. The water tank 6 is arranged on one side of the machine table 1 and is located on the ground, used for storing cooling water and provided with a conveying assembly, a blowing mechanism and a cutting mechanism.

[0032] The conveying assembly comprises a water pump 8 and a box body 10. The water pump 8 is fixedly arranged on the mounting plate on one side of the water tank 6, and the input port is connected with the bottom of one side of the water tank 6 through a water suction pipe to extract cooling water. A first fixing plate 23 is welded on the inner wall of the two sides of the water tank 6 and has a T-shaped structure to enhance stability. A ring body is fixedly arranged on the top of the first fixing plate 23, and the ring body has a hollow structure. The bottom of the box body 10 is fixedly connected with the top of the ring body through two fixing blocks. The bottom of the box body 10 is provided with three connecting pipes 19 connected with the three sides of the ring body. A plurality of nozzles are fixedly arranged on the inner wall of the ring body, and the nozzles are arranged in a ring array to ensure uniform water spraying and cooling of the extruded product. The output port of the water pump 8 is connected with one side of the box body 10 through a first pipeline 7 to form a circulating path of cooling water. The extrusion pipe 17 is located at the center position of the ring body to ensure that the extruded product can directly enter the cooling area.

[0033] The blowing mechanism comprises a second fixing plate, a blowing ring 18 and a fan 20. The second fixing plate is fixedly connected with the inner wall of the two sides of the water tank 6 and has a T-shaped structure. The bottom of the blowing ring 18 is fixedly connected with the top of the second fixing plate, and the inside of the blowing ring 18 has a hollow structure. A plurality of blow nozzles 21 are fixedly arranged on the inner wall of the blowing ring 18, and the blow nozzles 21 are arranged in a ring array and are inclined to ensure that the air flow blown out can effectively blow off the water on the surface of the product. The blowing port of the fan 20 is fixedly connected with and communicated with the top of the blowing ring 18 to provide blowing power for the blow nozzles 21.

[0034] The cutting mechanism comprises a frame 9, an electric push rod 12 and a blade 22. One side of the frame 9 is fixedly connected with one side of the water tank 6. One end of the electric push rod 12 is fixedly connected with the bottom of the frame 9, and the telescopic part of the electric push rod 12 penetrates through the frame 9 and is fixedly provided with a blade seat 11. The blade 22 is fixed on the blade seat 11 by bolts and is used for cutting products. The inner walls of the two sides of the frame 9 are fixedly provided with the same baffle 13, which is used in cooperation with the blade 22 to ensure the accuracy of cutting.

[0035] Embodiment two

[0036] Reference Figs. 1-6 On the basis of the first embodiment, the improvements are as follows:

[0037] A connecting plate 4 is fixedly arranged on the top of the hopper 3. A first motor 5 is fixedly arranged on the top of the connecting plate 4, and the output end of the first motor 5 penetrates through the bottom of the connecting plate 4. The output end of the first motor 5 is fixedly provided with a conveying rod, and a spiral conveying blade 16 is welded on the conveying rod to prevent the raw materials from being blocked in the hopper 3.

[0038] A refrigerating device 14 is fixedly arranged on the bottom of the water tank 6 to cool the water in the water tank 6. A drain pipe is arranged on the bottom of one side of the water tank 6 to facilitate the replacement of the water in the water tank 6. A valve is arranged on the drain pipe to control the discharge of water.

[0039] A cavity is arranged in the extrusion cylinder 2, and a heating element 15 is fixedly arranged on the inner wall of the cavity to heat the plastic raw materials, so that the plastic raw materials are plasticized and are convenient for extrusion and conveying.

[0040] The working principle of the refrigerating device 14 is the same as that of the authorized number CN218065561U, and details are not repeated here.

[0041] However, as known by those skilled in the art, the working principles and wiring methods of the first motor 5, the second motor, the heating element 15, the fan 20, the water pump 8, the refrigerating device 14 and the electric push rod 12 are common, which all belong to conventional means or common knowledge, and details are not repeated here. Those skilled in the art can make any selection and arrangement according to their needs or convenience.

[0042] The drawings in the specification of the present application are only schematic in nature and the sizes and shapes of the components shown in the drawings are not actual limits but are only a kind of schematic representation. In the actual implementation process, the components can be reasonably configured and adjusted according to specific needs and actual situations.

[0043] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A small high shear single screw extruder characterized by, Including machine table (1), the top of machine table (1) is fixedly provided with extrusion cylinder (2), the top of extrusion cylinder (2) is welded with hopper (3), the inner wall of both ends of extrusion cylinder (2) is rotatably provided with the same screw for extrusion conveying, one side of extrusion cylinder (2) is fixedly provided with second motor, the output end of second motor penetrates one side of extrusion cylinder (2) and is fixedly connected with one end of screw, one end of extrusion cylinder (2) is fixedly provided with extrusion pipe (17) and is connected, one side of machine table (1) is provided with water tank (6) on the ground, water tank (6) is provided with conveying assembly for cooling extruded products on it; The water tank (6) is provided with a blowing mechanism, and the conveying assembly sprays water to cool the products after extrusion, and then blows off most of the water on the surface of the products through the blowing mechanism. In order to facilitate the cutting of the products, the water tank (6) further comprises a cutting mechanism which can cut the products after blowing off most of the water.

2. A small high shear single screw extruder according to claim 1, characterized in that The conveying assembly comprises a water pump (8) and a tank (10), one side of the water tank (6) is fixedly provided with a mounting plate, the bottom of the water pump (8) is fixedly connected with the top of the mounting plate, the inner walls of both sides of the water tank (6) are welded with the same first fixed plate (23), the first fixed plate (23) is T-shaped, the top of the first fixed plate (23) is fixedly provided with a ring body, the inside of the ring body is a hollow structure, the top of the ring body is fixedly provided with two fixed blocks, the bottom of the tank (10) is fixedly connected with the top of the two fixed blocks, the bottom of the tank (10) is fixedly provided with three connecting pipes (19) and is connected, the three connecting pipes (19) are respectively fixedly connected with three sides of the ring body and are connected, a plurality of nozzles are fixedly arranged on the inner wall of the ring body, the nozzles are arranged in a ring array, the input port of the water pump (8) is fixedly provided with a water suction pipe, one end of the water suction pipe is fixedly connected with one side of the bottom of the water tank (6) and is connected, the output port of the water pump (8) is fixedly provided with a first pipeline (7), one side of the first pipeline (7) is fixedly connected with one side of the water tank (6), and one end is fixedly connected with one side of the tank (10) and is connected, the extrusion pipe (17) is located at the center position of the ring body.

3. A small high shear single screw extruder as claimed in claim 1, wherein, The blowing mechanism comprises a second fixed plate, a blowing ring (18) and a fan (20), the two ends of the second fixed plate are respectively fixedly connected with the inner walls of both sides of the water tank (6), the second fixed plate is T-shaped, the bottom of the blowing ring (18) is fixedly connected with the top of the second fixed plate, the inside of the blowing ring (18) is a hollow structure, a plurality of blow nozzles (21) are fixedly arranged on the inner wall of the blowing ring (18) and are connected, the blow nozzles (21) are arranged in a ring array, the blow nozzles (21) are inclined, the blowing ring (18) and the ring body are horizontally the same, the blowing port of the fan (20) is fixedly connected with the top of the blowing ring (18) and is connected.

4. The small high shear single screw extruder of claim 1, wherein, The cutting mechanism comprises a frame (9), an electric push rod (12) and a blade (22), one side of the frame (9) is fixedly connected with one side of a water tank (6), one end of the electric push rod (12) is fixedly connected with the bottom of the frame (9), the telescopic part of the electric push rod (12) penetrates through the frame (9) and is fixedly provided with a blade seat (11), the blade (22) is fixed on the blade seat (11) through bolts, and the inner walls of the two sides of the frame (9) are fixedly provided with the same baffle (13) for cooperating with the blade (22).

5. The small high shear single screw extruder of claim 1, wherein, The top of the hopper (3) is fixedly provided with a connecting plate (4), the top of the connecting plate (4) is fixedly provided with a first motor (5), the output end of the first motor (5) penetrates through the bottom of the connecting plate (4), the output end of the first motor (5) is fixedly provided with a conveying rod, and the conveying rod is welded with spiral conveying leaves (16) for preventing blockage.

6. The small high shear single screw extruder of claim 1, wherein, The bottom of the water tank (6) is fixedly provided with a refrigerator (14) for cooling water in the water tank (6), and the bottom of one side of the water tank (6) is fixedly provided with a drain pipe for facilitating water replacement, and the drain pipe is provided with a valve.

7. The small high shear single screw extruder of claim 1, wherein, The extrusion cylinder (2) is provided with a cavity, and the inner wall of the cavity is fixedly provided with a heating piece (15) for heating plastic raw materials.

Images