Double-screw extruder convenient to clean

Abstract

The utility model discloses a twin-screw extruder convenient to clean, which belongs to the field of twin-screw extruders and comprises an adjustable underframe, a workbench is arranged on the top surface of the adjustable underframe, a motor, a reduction gearbox, a twin-screw transmission case and a lower screw cylinder are arranged on the top surface of the workbench, a transmission case spindle is arranged in the twin-screw transmission case, and a transmission case is arranged in the transmission case spindle. A screw rod is arranged in the lower screw cylinder, the upper screw cylinder and the lower screw cylinder are connected to the upper portion of the lower screw cylinder through a connecting assembly, a machine head mold is arranged on the right side of the upper screw cylinder, and a stock bin and a screw conveyor are arranged above the double-screw transmission box. The lower screw cylinder and the upper screw cylinder are detachably connected together through the connecting assembly, so that the upper screw cylinder is convenient to disassemble and assemble, and the extruder is convenient to clean; the machine head mold is connected with the third splicing structure and the first splicing structure through the second splicing structure, so that the machine head mold is convenient to disassemble and assemble, and the cleaning work is favorably carried out; the workbench is driven to clean through the adjustable bottom frame, and cleaning water can be discharged conveniently.

Description

Technical Field

[0001] The utility model relates to the field of twin-screw extruders, in particular to a twin-screw extruder which is convenient to clean. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the forming and processing of extruded products. However, the existing twin-screw extruder is not convenient to clean the inside of the barrel, and the long-term accumulation of materials is likely to affect the extrusion effect, thus affecting the normal use of the twin-screw extruder. Content of the Utility Model

[0003] The purpose of the utility model is to provide a twin-screw extruder which is convenient to clean, and solve the problem that the existing twin-screw extruder is not convenient to clean the inside of the barrel, and the long-term accumulation of materials is likely to affect the extrusion effect, thus affecting the normal use of the twin-screw extruder.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A twin-screw extruder which is convenient to clean according to the utility model includes an adjustable chassis. A workbench is arranged on the top surface of the adjustable chassis. A motor is arranged on the top surface of the workbench. The output end of the motor is provided with a speed reducer. The output end of the speed reducer is provided with a twin-screw transmission box. A transmission box main shaft is arranged inside the twin-screw transmission box. A lower barrel is arranged on the right side of the twin-screw transmission box. A screw is arranged inside the lower barrel. The screw is connected with the transmission box main shaft. The upper barrel is connected above the lower barrel through a connecting component. A head mold is arranged on the right side of the lower barrel and the upper barrel. A feed bin is arranged above the twin-screw transmission box. A spiral conveyor is arranged on the bottom surface of the feed bin. The spiral conveyor is communicated with the lower barrel through a feed pipe.

[0006] Further, lower connecting plates are arranged on the front and rear outer walls of the lower barrel, and clamping grooves are arranged on the lower connecting plates.

[0007] Still further, the cross section of the clamping groove is arranged in a convex shape.

[0008] Still further, upper connecting plates are arranged on the front and rear outer walls of the upper barrel, and mounting grooves are arranged on the upper connecting plates.

[0009] Still further, the connecting component includes a connecting bolt. A clamping block is arranged at the bottom end of the connecting bolt. The clamping block penetrates through the mounting groove and extends into the clamping groove. A limiting plate and a locking nut are arranged above the upper connecting plate on the connecting bolt.

[0010] Furthermore, third splicing structures and first splicing structures are respectively arranged on the outer walls of the right ends of the lower screw barrel and the upper screw barrel, and the third splicing structure and the first splicing structure have the same structure; the first splicing structure includes two first connecting blocks, a connecting groove is arranged between the two first connecting blocks, a second splicing structure is arranged at the left end of the head die, a second connecting block matching with the connecting groove is arranged on the inner wall of the second splicing structure, connecting screws are arranged on the left and right sides of the second connecting block, and the connecting screws are connected with the first connecting block.

[0011] Furthermore, the adjustable chassis includes a mounting frame, universal wheels are mounted on the bottom surface of the mounting frame, second support frames and first support frames are arranged at positions close to the left and right ends on the top surface of the mounting frame, a rotating support frame is rotatably connected to the top surface of the first support frame, the rotating support frame is connected with the workbench through a connecting column, and a hydraulic cylinder is arranged between the mounting frame and the rotating support frame.

[0012] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0013] In the present utility model, the lower screw barrel and the upper screw barrel are detachably connected together through a connecting component, which is convenient for disassembling and assembling the upper screw barrel. By setting the screw barrel into two detachable parts, it is convenient to clean the extruder; the head die is connected with the third splicing structure and the first splicing structure through the second splicing structure, which is convenient for disassembling and assembling the head die and for disassembling the screw barrel, and is beneficial to the development of the cleaning work; the workbench is driven by the adjustable chassis for cleaning, which is conducive to the discharge of cleaning water. Description of the Drawings

[0014] The following further describes the present utility model with reference to the drawings.

[0015] Figure 1 It is the front view of the twin-screw extruder convenient for cleaning of the present utility model;

[0016] Figure 2 It is the cross-sectional view of the twin-screw extruder convenient for cleaning of the present utility model;

[0017] Figure 3 It is the side view of the lower screw barrel and the upper screw barrel of the present utility model;

[0018] Figure 4 It is the three-dimensional structure schematic diagram of the connecting component of the present utility model;

[0019] Figure 5 It is the structure schematic diagram of the first splicing structure and the second splicing structure of the present utility model;

[0020] Figure 6This is the front view of the disassembled state of the twin-screw extruder that is convenient for cleaning according to the present utility model.

[0021] Explanation of reference numerals: 1, adjustable chassis; 2, workbench; 3, motor; 4, reduction box; 5, twin-screw transmission box; 6, main shaft of the transmission box; 7, screw; 8, lower barrel; 9, upper barrel; 10, connecting component; 11, head die; 12, hopper; 13, screw conveyor; 1-1, mounting frame; 1-2, universal wheel; 1-3, first support frame; 1-4, second support frame; 1-5, rotating support frame; 1-6, hydraulic cylinder; 1-7, connecting column; 8-1, lower connecting plate; 8-1-1, clamping groove; 8-2, third splicing structure; 9-1, upper connecting plate; 9-1-1, mounting groove; 9-2, first splicing structure; 9-2-1, first connecting block; 10-1, connecting bolt; 10-2, clamping block; 10-3, limiting plate; 10-4, locking nut; 11-1, second splicing structure; 11-1-1, second connecting block; 11-1-2, connecting screw. Specific embodiments

[0022] As Figures 1-6 shown, a twin-screw extruder that is convenient for cleaning includes an adjustable chassis 1. The top surface of the adjustable chassis 1 is connected with a workbench 2. The top surface of the workbench 2 is provided with a motor 3. The output end of the motor 3 is connected with a reduction box 4. The output end of the reduction box 4 is connected with a twin-screw transmission box 5. The inside of the twin-screw transmission box 5 is rotatably connected with a main shaft 6 of the transmission box. The right side of the twin-screw transmission box 5 is connected with a lower barrel 8. The inside of the lower barrel 8 is rotatably connected with two screws 7. The two screws 7 are arranged side by side front and back. The left ends of the two screws 7 are provided with meshing gears. One of the screws 7 is connected with the main shaft 6 of the transmission box. This screw 7 drives the other screw 7 to rotate through the gear. The upper barrel 9 is connected above the lower barrel 8 through a connecting component 10. The head die 11 is detachably installed on the right side of the lower barrel 8 and the upper barrel 9. A hopper 12 is arranged above the twin-screw transmission box 5. The bottom surface of the hopper 12 is provided with a screw conveyor 13. The screw conveyor 13 is communicated with the lower barrel 8 through a feeding pipe.

[0023] As Figure 3 shown, lower connecting plates 8-1 are connected to the front and rear outer walls of the lower barrel 8. A clamping groove 8-1-1 is formed on the lower connecting plate 8-1. The cross section of the clamping groove 8-1-1 is set as a convex shape.

[0024] Upper connecting plates 9-1 are connected to the front and rear outer walls of the upper barrel 9. A mounting groove 9-1-1 is formed on the upper connecting plate 9-1.

[0025] As Figure 4As shown, the connecting component 10 includes a connecting bolt 10-1. The bottom end of the connecting bolt 10-1 is connected with a clamping block 10-2. The clamping block 10-2 penetrates through the installation groove 9-1-1 and then extends into the clamping groove 8-1-1. A limiting plate 10-3 and a locking nut 10-4 are arranged above the upper connecting plate 9-1 on the connecting bolt 10-1. During installation, the clamping block 10-2 penetrates through the installation groove 9-1-1 and then extends into the clamping groove 8-1-1. The connecting bolt 10-1 is rotated to make the clamping block 10-2 rotate 90°. Since the cross-section of the clamping groove 8-1-1 is convex-shaped, the clamping block 10-2 is exactly clamped in the clamping groove 8-1-1 after rotating 90°. Then, the limiting plate 10-3 and the locking nut 10-4 are threadedly connected to the connecting bolt 10-1. The bottom surface of the limiting plate 10-3 contacts the top surface of the upper connecting plate 9-1. The area of the limiting plate 10-3 is larger than the area of the installation groove 9-1-1. The locking nut 10-4 is tightened for positioning, so as to connect the lower screw barrel 8 and the upper screw barrel 9 together.

[0026] As Figure 2 shown, third splicing structures 8-2 and first splicing structures 9-2 are respectively connected to the outer walls of the right ends of the lower screw barrel 8 and the upper screw barrel 9. A plurality of third splicing structures 8-2 are arranged equidistantly along the outer wall of the lower screw barrel 8, and a plurality of first splicing structures 9-2 are arranged equidistantly along the outer wall of the upper screw barrel 9. The third splicing structure 8-2 and the first splicing structure 9-2 have the same structure. As Figure 5 shown, the first splicing structure 9-2 includes two first connecting blocks 9-2-1. A connecting groove is arranged between the two first connecting blocks 9-2-1. The left end of the head die 11 is connected with a second splicing structure 11-1. A second connecting block 11-1-1 matching the connecting groove is connected to the inner wall of the second splicing structure 11-1. Connecting screws 11-1-2 are threadedly connected to the left and right sides of the second connecting block 11-1-1. The connecting screws 11-1-2 are connected with the first connecting blocks 9-2-1. During installation, first, the head die 11 is sleeved on the right ends of the lower screw barrel 8 and the upper screw barrel 9, so that the second splicing structure 11-1 is located between two adjacent third splicing structures 8-2 or two adjacent first splicing structures 9-2. Then, the head die 11 is rotated to insert the second connecting block 11-1-1 into the connecting groove between the two first connecting blocks 9-2-1. Finally, the connecting screws 11-1-2 are screwed into the first connecting blocks 9-2-1, so as to connect the second splicing structure 11-1 and the first splicing structure 9-2 together. The second splicing structure 11-1 and the third splicing structure 8-2 are connected in the same way, so as to connect the head die 11 with the lower screw barrel 8 and the upper screw barrel 9 together.

[0027] As Figure 6As shown in the figure, the adjustable chassis 1 includes a mounting frame 1-1. A universal wheel 1-2 is installed on the bottom surface of the mounting frame 1-1. Second support frames 1-4 and first support frames 1-3 are connected to positions near the left and right ends of the top surface of the mounting frame 1-1. A rotating support frame 1-5 is rotatably connected to the top surface of the first support frame 1-3. Specifically, a rotating shaft is connected to the right end of the rotating support frame 1-5, and the rotating shaft is rotatably connected to the first support frame 1-3 through a bearing. The rotating support frame 1-5 is connected to the workbench 2 through a connecting column 1-7. A hydraulic cylinder 1-6 is arranged between the mounting frame 1-1 and the rotating support frame 1-5. The bottom end of the hydraulic cylinder 1-6 is installed on the mounting frame 1-1, and the piston rod of the hydraulic cylinder 1-6 is hinged to a mounting seat on the rotating support frame 1-5; when the extruder is working, the hydraulic cylinder 1-6 does not work, and the left end of the workbench 2 is supported by the second support frame 1-4, and the workbench 2 remains in a horizontal state; when the extruder is cleaned, the piston rod of the hydraulic cylinder 1-6 extends, driving the left end of the rotating support frame 1-5 to lift, so that the workbench 2 tilts to the right, which can prevent the cleaning water from entering the twin-screw transmission box 5.

[0028] The using process of the utility model is as follows:

[0029] When the extruder is cleaned, unscrew the connecting screw 11-1-2, and then rotate the head die 11 to separate the second splicing structure 11-1 from the third splicing structure 8-2 and the first splicing structure 9-2, which is convenient for removing the head die 11; then, rotate the limit plate 10-3 and the locking nut 10-4 to remove the limit plate 10-3 and the locking nut 10-4. After that, rotate the connecting bolt 10-1 to rotate the block 10-2 by 90°, and take out the connecting bolt 10-1 upward. Remove multiple connecting components 10 in this way, and then remove the upper barrel 9 for cleaning; finally, the piston rod of the hydraulic cylinder 1-6 extends, driving the left end of the rotating support frame 1-5 to lift, so that the workbench 2 tilts to the right. At this time, without the obstruction of the upper barrel 9, the staff can easily use water to clean the lower barrel 8 and the screw 7; after the cleaning is completed, dry it, and reinstall the upper barrel 9 and the head die 11.

[0030] The speed reducer 4, the twin-screw transmission box 5, the transmission box main shaft 6, the screw 7, the hydraulic cylinder 1-6, etc. are all prior arts, and their specific structures and working principles will not be elaborated here.

[0031] The above embodiments are only descriptions of the preferred ways of the utility model, and do not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A twin-screw extruder that is easy to clean, characterized in that: The invention comprises an adjustable base frame (1), a workbench (2) is arranged on the top surface of the adjustable base frame (1), a motor (3) is arranged on the top surface of the workbench (2), a reduction box (4) is arranged at the output end of the motor (3), a twin-screw transmission box (5) is arranged at the output end of the reduction box (4), a transmission box main shaft (6) is arranged inside the twin-screw transmission box (5), a lower screw barrel (8) is arranged on the right side of the twin-screw transmission box (5), and a screw is arranged inside the lower screw barrel (8). Rod (7), the screw (7) is connected to the main shaft (6) of the transmission box, the upper part of the lower screw barrel (8) is connected to the upper screw barrel (9) through a connecting assembly (10), a head mold (11) is arranged on the right side of the lower screw barrel (8) and the upper screw barrel (9), a silo (12) is arranged above the twin-screw transmission box (5), a screw conveyor (13) is arranged on the bottom surface of the silo (12), and the screw conveyor (13) is connected to the lower screw barrel (8) through a feeding pipe.

2. The easy-to-clean twin-screw extruder according to claim 1, characterized in that: Lower connecting plates (8-1) are provided on the outer walls on both sides of the front and rear of the lower screw barrel (8), and a clamping groove (8-1-1) is provided on the lower connecting plate (8-1).

3. The easy-to-clean twin-screw extruder according to claim 2, characterized in that: The cross section of the clamping slot (8-1-1) is arranged in a convex shape.

4. The easy-to-clean twin-screw extruder according to claim 3, characterized in that: Upper connecting plates (9-1) are provided on the outer walls on both sides of the front and rear of the upper screw barrel (9), and the upper connecting plates (9-1) are provided with mounting grooves (9-1-1).

5. The easy-to-clean twin-screw extruder according to claim 4, characterized in that: The connecting assembly (10) comprises a connecting bolt (10-1), a clamping block (10-2) is arranged at the bottom end of the connecting bolt (10-1), the clamping block (10-2) passes through the installation slot (9-1-1) and extends into the clamping slot (8-1-1), and a limiting plate (10-3) and a locking nut (10-4) are arranged on the connecting bolt (10-1) above the upper connecting plate (9-1).

6. The easy-to-clean twin-screw extruder according to claim 1, characterized in that: A third splicing structure (8-2) and a first splicing structure (9-2) are respectively arranged on the outer walls of the right ends of the lower screw barrel (8) and the upper screw barrel (9); the third splicing structure (8-2) and the first splicing structure (9-2) have the same structure; the first splicing structure (9-2) comprises two first connecting blocks (9-2-1), a connecting groove is arranged between the two first connecting blocks (9-2-1); a second splicing structure (11-1) is arranged at the left end of the head mold (11); a second connecting block (11-1-1) matching the connecting groove is arranged on the inner wall of the second splicing structure (11-1); connecting screws (11-1-2) are arranged on the left and right sides of the second connecting block (11-1-1), and the connecting screws (11-1-2) are connected to the first connecting block (9-2-1).

7. The easy-to-clean twin-screw extruder according to claim 1, characterized in that: The adjustable base frame (1) comprises a mounting frame (1-1), a universal wheel (1-2) is mounted on the bottom surface of the mounting frame (1-1), a second support frame (1-4) and a first support frame (1-3) are arranged on the top surface of the mounting frame (1-1) near the left and right ends, a rotating support frame (1-5) is rotatably connected to the top surface of the first support frame (1-3), the rotating support frame (1-5) is connected to the workbench (2) via a connecting column (1-7), and a hydraulic cylinder (1-6) is arranged between the mounting frame (1-1) and the rotating support frame (1-5).

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