Feeding device of double-screw extruder

Abstract

The feeding device comprises a bottom box, one end of the bottom box is fixedly connected with an extrusion opening, the other end of the bottom box is fixedly connected with two driving motors, the movable ends of the two driving motors penetrate through the bottom box and are respectively and fixedly connected with an extrusion screw rod, the top of the bottom box is fixedly connected with a connecting pipe, and the connecting pipe is fixedly connected with a screw rod. A feeding cylinder is fixedly connected to the top end of the connecting pipe, a stirring device used for evenly mixing materials is arranged in the feeding cylinder, a feeding box is fixedly connected to the top of the feeding cylinder, a crushing motor is fixedly connected to one side of the feeding box through a fixing frame, and a transmission chain wheel is fixedly connected to the movable end of the crushing motor. One end of the transmission chain wheel is fixedly connected with a crushing roller, and one side of the transmission chain wheel is movably connected with a transmission chain, the feeding device of the double-screw extruder solves the problems that most of common double-screw extruders adopt direct feeding and various materials cannot be uniformly mixed, and the feeding efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to double screw extruder technical field, concretely is a kind of feeding device of double screw extruder. BACKGROUND

[0002] In the plastic processing, chemical industry, food and many other industries, double screw extruder as an important production equipment, is widely used in the melt extrusion molding process of various materials. However, the traditional double screw extruder has some significant shortcomings in the feeding link, which affects the quality and production efficiency of extruded products.

[0003] Firstly, the existing double screw extruder mostly adopts direct feeding mode. Under this mode, the material (especially the material containing large particles) directly enters the extruder without sufficient pretreatment. Since the large particle material is difficult to completely melt during the extrusion process, it not only causes internal defects of the extruded product, such as cavities, bubbles, etc., but also affects the overall mechanical properties and appearance quality of the product.

[0004] Secondly, although some existing feeding devices are equipped with stirring devices, these stirring devices are often designed simply and have limited stirring effect. In actual application, these simple stirring devices often cannot ensure that various materials reach a uniformly mixed state within a short time. Uneven mixing of materials will cause uneven flow of materials during the extrusion process, thereby affecting the dimensional accuracy and surface quality of the extruded product. In addition, too long stirring time will also reduce the feeding efficiency and increase the production cost. TECHNICAL SOLUTION

[0005] The utility model aims at providing a feeding device of double screw extruder to solve the problem of double screw extruder proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a feeding device of double screw extruder, comprising a bottom box, one end of the bottom box is fixedly connected with an extrusion outlet, and the other end of the bottom box is fixedly connected with two drive motors, the movable ends of the two drive motors penetrate through the bottom box and are fixedly connected with one extrusion screw respectively, the top of the bottom box is fixedly connected with a connecting pipe, the top end of the connecting pipe is fixedly connected with a feeding cylinder, the inside of the feeding cylinder is provided with a stirring device for uniformly mixing materials, and the top of the feeding cylinder is fixedly connected with a feeding box, one side of the feeding box is fixedly connected with a crushing motor through a fixed frame, the movable end of the crushing motor is fixedly connected with a transmission sprocket, one end of the transmission sprocket is fixedly connected with a crushing roller, and one side of the transmission sprocket is movably connected with a transmission chain.

[0007] Preferably, the two extrusion screws are located inside the bottom box, and one end of the two extrusion screws is rotatably connected to the inner wall of the bottom box.

[0008] Preferably, the inside of the connecting pipe is fixedly connected with an electronic valve, and the electronic valve is composed of an electronic controller and a valve, one end of the valve is movably connected to the inner wall of the connecting pipe, the other end of the valve penetrates through the connecting pipe and is fixedly connected to the electronic controller, and one side of the electronic controller is fixedly connected to the outer surface of the connecting pipe.

[0009] Preferably, the crushing rollers are provided in two, one end of each of the two crushing rollers is rotatably connected to the inner wall of the feeding box, and the other end of each of the two crushing rollers penetrates through the feeding box and is fixedly connected with a driving sprocket, and the inner surface of the driving chain is movably connected between the two driving sprockets.

[0010] Preferably, the stirring device comprises a stirring motor, a first stirring rod, a first gear, a second gear, a second stirring rod and a rack, the top of the feeding cylinder is fixedly connected with a stirring motor on one side corresponding to the feeding box, the movable end of the stirring motor is fixedly connected with a first stirring rod penetrating through the feeding cylinder, the outer surface of the first stirring rod is fixedly connected with a first gear, one side of the first gear is meshingly connected with a second gear, the bottom of the second gear is fixedly connected with a second stirring rod, and the inner wall of the feeding cylinder is fixedly connected with a rack.

[0011] Preferably, the rack is circular, and one side of the second gear is meshingly connected to the inner side of the rack.

[0012] Preferably, the outer surfaces of the first and second stirring rods are fixedly connected with a plurality of paddles, and the first and second stirring rods are movably connected with a connecting plate.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The crushing rollers and the transmission system provided by the device can quickly and effectively crush large or irregularly shaped materials into small and uniform particles. This step is crucial for subsequent material mixing, as it ensures the consistency of all materials in size and shape, thereby improving mixing efficiency and quality.

[0015] 2. The double stirring rod design of the stirring device, combined with the gear and rack transmission mechanism, allows the stirring rods to rotate simultaneously in circular motion. This design ensures full-range and dead-angle-free mixing of materials in the feeding cylinder, avoiding material aggregation or layering. In addition, the paddle design on the stirring rods further enhances the stirring effect, making the material mixing more uniform and greatly improving the feeding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall view of the utility model;

[0017] Figure 2 It is the internal view of the bottom box of the utility model;

[0018] Figure 3 The internal view of the feeding box of the utility model;

[0019] Figure 4 The internal view of the feeding cylinder of the utility model.

[0020] In the figure: 1, bottom box; 2, extrusion outlet; 3, drive motor; 4, extrusion screw; 5, connecting pipe; 6, feeding cylinder; 7, feeding box; 8, crushing motor; 9, transmission sprocket; 10, transmission chain; 11, crushing roller; 12, stirring motor; 13, first stirring rod; 14, first gear; 15, second gear; 16, second stirring rod; 17, connecting plate; 18, rack; 19, electronic valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of feeding device of double screw extruder, including bottom box 1, one end of bottom box 1 is fixedly connected with extrusion outlet 2, and another end of bottom box 1 is fixedly connected with two drive motors 3, and the movable end of two drive motors 3 is fixedly connected with one extrusion screw 4 respectively and penetrates bottom box 1, the top of bottom box 1 is fixedly connected with connecting pipe 5, the top of connecting pipe 5 is fixedly connected with feeding cylinder 6, the inside of feeding cylinder 6 is provided with the stirring device for uniformly mixing material, and the top of feeding cylinder 6 is fixedly connected with feeding box 7, one side of feeding box 7 is fixedly connected with crushing motor 8 by fixed frame, the movable end of crushing motor 8 is fixedly connected with transmission sprocket 9, one end of transmission sprocket 9 is fixedly connected with crushing roller 11, and one side of transmission sprocket 9 is movably connected with transmission chain 10.

[0023] Further, two extrusion screws 4 are located in the inside of bottom box 1, and one end of two extrusion screws 4 is rotatably connected to the inner wall of bottom box 1.

[0024] Further, the inside of connecting pipe 5 is fixedly connected with electronic valve 19, and electronic valve 19 is composed of electronic controller and valve, and one end of valve is movably connected to the inner wall of connecting pipe 5, and the other end of valve penetrates connecting pipe 5 and is fixedly connected to electronic controller, and one side of electronic controller is fixedly connected to the outer surface of connecting pipe 5.

[0025] Further, the crushing rollers 11 are provided with two, and one end of the two crushing rollers 11 is rotatably connected to the inner wall of the feeding box 7, and the other end of the two crushing rollers 11 penetrates the feeding box 7 and is fixedly connected with a driving sprocket 9 respectively, and the inner surface of the driving chain 10 is movably connected between the two driving sprockets 9.

[0026] Further, the stirring device comprises a stirring motor 12, a first stirring rod 13, a first gear 14, a second gear 15, a second stirring rod 16 and a rack 18, the top of the feeding cylinder 6 is fixedly connected with the stirring motor 12 on one side of the feeding box 7, the movable end of the stirring motor 12 is fixedly connected with the first stirring rod 13 penetrating the feeding cylinder 6, the outer surface of the first stirring rod 13 is fixedly connected with the first gear 14, one side of the first gear 14 is meshingly connected with the second gear 15, the bottom of the second gear 15 is fixedly connected with the second stirring rod 16, and the inner wall of the feeding cylinder 6 is fixedly connected with the rack 18.

[0027] Further, the rack 18 is circular, and one side of the second gear 15 is meshingly connected to the inner side of the rack 18.

[0028] Further, the outer surfaces of the first stirring rod 13 and the second stirring rod 16 are fixedly connected with a plurality of paddles, and the first stirring rod 13 and the second stirring rod 16 are movably connected with a connecting plate 17.

[0029] The embodiment of the application is used as follows: when the device is used, first, the driving motor 3 is started, so that the driving end of the driving motor 3 drives one of the transmission sprockets 9 to rotate, then the transmission sprockets 10 drive the two transmission sprockets 9 to rotate, so that the two transmission sprockets 9 drive the two crushing rollers 11 to rotate, then various materials are poured into the feeding box 7, then when passing between the two crushing rollers 11, the two crushing rollers 11 rotate to crush large pieces of each material, so that each material is crushed into uniform particles, then the various materials enter the inside of the feeding cylinder 6, then the driving end of the stirring motor 12 drives the first stirring rod 13 to rotate, so that the first stirring rod 13 drives the first gear 14 to rotate at the same time, and drives the paddle fixed thereon to stir the material, then the first gear 14 and the second gear 15 are connected through meshing, at the same time, the second gear 15 and the rack 18 are connected through meshing, so that the second gear 15 rotates at the same time, and the second gear 15 rotates at the same time. The inside of the rack 18 performs circular motion, then the connecting plate 17 makes the rack 18 more stable during the circular motion, then the second gear 15 drives the second stirring rod 16 to rotate while performing circular motion, so that the second stirring rod 16 stirs the material close to the inner wall of the feeding cylinder 6, so that the various materials are mixed more uniformly, then the electronic controller of the electronic valve 19 controls the valve to open, so that the material enters the inside of the bottom box 1, and the two driving motors 3 drive the two extrusion screws 4 to rotate, so that the material is extruded out of the extrusion port 2.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A feeding device for a twin-screw extruder comprising a hopper (1), characterized in that: One end of the bottom box (1) is fixedly connected with an extrusion port (2), and the other end of the bottom box (1) is fixedly connected with two drive motors (3), the movable ends of the two drive motors (3) penetrate through the bottom box (1) and are fixedly connected with one extrusion screw rod (4) respectively, the top of the bottom box (1) is fixedly connected with a connecting pipe (5), the top end of the connecting pipe (5) is fixedly connected with a feeding cylinder (6), the inside of the feeding cylinder (6) is provided with a stirring device for uniformly mixing materials, and the top of the feeding cylinder (6) is fixedly connected with a feeding box (7), one side of the feeding box (7) is fixedly connected with a crushing motor (8) through a fixing frame, the movable end of the crushing motor (8) is fixedly connected with a transmission sprocket (9), one end of the transmission sprocket (9) is fixedly connected with a crushing roller (11), and one side of the transmission sprocket (9) is movably connected with a transmission chain (10).

2. A feeding device for a twin-screw extruder according to claim 1, characterized in that: The two extrusion screw rods (4) are located in the inside of the bottom box (1), and one end of the two extrusion screw rods (4) is rotatably connected to the inner wall of the bottom box (1).

3. A feeding device for a twin-screw extruder according to claim 1, characterized in that: The inside of the connecting pipe (5) is fixedly connected with an electronic valve (19), and the electronic valve (19) is composed of an electronic controller and a valve, one end of the valve is movably connected to the inner wall of the connecting pipe (5), the other end of the valve penetrates through the connecting pipe (5) and is fixedly connected to the electronic controller, and one side of the electronic controller is fixedly connected to the outer surface of the connecting pipe (5).

4. A feeding device for a twin-screw extruder according to claim 1, characterized in that: The crushing roller (11) is provided with two, one end of the two crushing rollers (11) is rotatably connected to the inner wall of the feeding box (7), and the other end of the two crushing rollers (11) penetrates through the feeding box (7) and is fixedly connected with one transmission sprocket (9) respectively, and the inner surface of the transmission chain (10) is movably connected between the two transmission sprockets (9).

5. A feeding device for a twin-screw extruder according to claim 1, characterized in that: The stirring device comprises a stirring motor (12), a first stirring rod (13), a first gear (14), a second gear (15), a second stirring rod (16) and a rack (18), the top of the feeding cylinder (6) is fixedly connected with a stirring motor (12) corresponding to one side of the feeding box (7), the movable end of the stirring motor (12) penetrates through the feeding cylinder (6) and is fixedly connected with a first stirring rod (13), the outer surface of the first stirring rod (13) is fixedly connected with a first gear (14), one side of the first gear (14) is meshingly connected with a second gear (15), the bottom of the second gear (15) is fixedly connected with a second stirring rod (16), and the inner wall of the feeding cylinder (6) is fixedly connected with a rack (18).

6. A feeding device for a twin-screw extruder according to claim 5, characterized in that: The rack (18) is circular, and one side of the second gear (15) is meshingly connected to the inside of the rack (18).

7. A feeding device for a twin-screw extruder according to claim 5, characterized in that: The outer surfaces of the first stirring rod (13) and the second stirring rod (16) are fixedly connected with a plurality of paddles, and the first stirring rod (13) and the second stirring rod (16) are movably connected with a connecting plate (17) between them.

Images