Double-screw granulator

Abstract

The utility model relates to the technical field of pelletizers, and provides a double-screw pelletizer which comprises a bottom plate, sliding grooves are symmetrically formed in the upper surface of the bottom plate, connecting rods arranged at equal intervals are symmetrically and slidably connected to the middles of the two sliding grooves, a first shell is fixedly connected to the upper surface of the sliding groove in one side, and a second shell is fixedly connected to the upper surface of the sliding groove in the other side. The detachable assembly is arranged to separate the first shell from the second shell, an output shaft of an electric motor drives a straight gear A to rotate through a straight gear B, the straight gear A drives bevel gears A on the two sides to rotate through a movable rod, and the bevel gears A drive a bidirectional lead screw to rotate in a supporting block through a bevel gear B; and the connecting rod horizontally moves in the two-way screw rod, and the connecting rod drives the first shell and the second shell to slide in the sliding grooves, so that the first shell and the second shell are disassembled and assembled, the interior of the granulator is convenient to clean, subsequent maintenance is convenient, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of granulators, in particular to a twin-screw granulator. Background Art

[0002] Twin-screw granulators are widely used in the production and preparation of plastic particles (such as plastic particles, etc.), which mainly include twin-screw extrusion mechanism, feeding mechanism and pelletizing device, etc. The feeding mechanism is composed of a feeding hopper and a feeder. The raw materials are fed into the twin-screw extrusion mechanism through the feeding mechanism, and are extruded into strips by the extruder head die at the front end of the twin-screw extrusion mechanism under high temperature and high pressure. Finally, they are cooled and dried and pelletized to obtain granular raw materials. They are also widely used in material preparation and granulation processing in the home appliance industry.

[0003] For example, the publication number CN220534639U discloses a twin-screw granulator, including a bottom plate and a twin-screw granulator, the bottom plate is symmetrically provided with mounting frames, two mounting frames are fixedly provided with a fixed housing, the fixed housing is connected to the twin-screw granulator through a driving device, the side of the fixed housing is provided with an adjustment mechanism, the end of the fixed housing close to the driving device is provided with a feed hopper, and the side wall of the feed hopper is provided with an auxiliary unloading mechanism. The utility model can be sealed and fixed with the fixed housing when granulating, so as not to affect the normal granulation processing. After use, it can be taken away from the fixed housing, and the device can be opened, which can facilitate the cleaning operation inside, and the cleaning is more convenient. At the same time, it can also avoid material residue inside, which does not affect the next granulation processing. And it can also be conveniently opened for inspection or replacement when the internal device fails, and the operation is more convenient.

[0004] However, in the prior art, due to the gap difference between the two screws, material accumulation is likely to occur during granulation, and the self-cleaning property is poor, which is not conducive to equipment maintenance, thereby limiting the practicability of the device to a certain extent. Utility Model Content

[0005] The utility model aims to solve the problem that there is a gap difference between the two screws, material accumulation is easy to occur during granulation, the self-cleaning property is poor, and it is not conducive to equipment maintenance.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a twin-screw granulator, comprising a bottom plate, the upper surface of the bottom plate is symmetrically provided with slide grooves, the middle parts of the two slide grooves are symmetrically slidably connected with equidistantly arranged connecting rods, the upper surface of the slide groove on one side is fixedly connected with a first shell, the upper surface of the slide groove on the other side is fixedly connected with a second shell, a detachable component is fixedly connected to a side of the bottom plate surface close to the slide groove, the detachable component comprises a fixed plate, the middle part of the fixed plate is rotatably connected with a movable rod, the middle part of the movable rod is fixedly connected with a spur gear A, one side of the upper surface of the fixed plate is fixedly connected with an electric motor, the output shaft of the electric motor is transmission-connected with a spur gear B, and the spur gear B and the spur gear A are meshed with each other;

[0007] The two ends of the movable rod are symmetrically fixedly connected with bevel gears A, and the upper surface of the base plate is symmetrically fixedly connected with support blocks on both sides of the slide groove. The middle of the support block is rotatably connected with a bidirectional screw rod, and one end of the bidirectional screw rod is transmission-connected with a bevel gear B, and the bevel gear B and the bevel gear A are meshed with each other, and the connecting rod is threadedly connected to the bidirectional screw rod.

[0008] As a preferred embodiment, the upper surfaces of the first shell and the second shell are symmetrically fixedly connected with fixing blocks, the middle of the fixing blocks is inserted with a screw, and one end of the screw is threadedly connected with a nut.

[0009] As a preferred embodiment, a support column is fixedly connected to a side of the upper surface of the bottom plate away from the slide groove, the upper surface of the support column is fixedly connected to a main frame, and the outer side wall of the main frame is fixedly connected to a connecting frame.

[0010] As a preferred embodiment, the inner wall of the connecting frame is fixedly connected to a driving motor, one end of the outer wall of the main frame is rotatably connected to a connecting shaft A, the other end of the outer wall of the main frame is rotatably connected to a connecting shaft B, and one end of the output shaft of the driving motor is transmission-connected to the connecting shaft A, and the connecting shaft A drives the connecting shaft B to rotate through a transmission belt.

[0011] As a preferred embodiment, a solenoid valve is fixedly connected to the upper surface of the main frame, a mixing assembly is fixedly connected to the upper surface of the solenoid valve, and the mixing assembly includes a mixing drum.

[0012] As a preferred embodiment, feeding troughs are symmetrically provided on both sides of the upper surface of the mixing drum, a mixing motor is fixedly connected to the axis of the upper surface of the mixing drum, the output shaft of the mixing motor is transmission-connected to a rotating shaft, and a plurality of equidistantly arranged mixing rollers are fixedly connected to the surface of the rotating shaft.

[0013] As a preferred embodiment, one end of the first shell and the second shell are fixedly connected to the mold via a positioning pin.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. The utility model separates the first shell and the second shell by arranging a detachable component. The output shaft of the electric motor drives the spur gear A to rotate through the spur gear B. The spur gear A drives the bevel gears A on both sides to rotate through the movable rod. The bevel gear A drives the bidirectional screw to rotate in the support block through the bevel gear B, so that the connecting rod moves horizontally in the bidirectional screw. The connecting rod drives the first shell and the second shell to slide in the slide groove respectively, so that the first shell and the second shell can be disassembled and assembled, which is convenient for cleaning the interior of the granulator and subsequent maintenance, thereby improving the practicality of the device.

[0016] 2. The utility model arranges a mixing component to mix and stir the added multiple materials. The materials are added into the mixing drum from the feeding trough. The output shaft of the mixing motor drives the mixing roller to rotate through the rotating shaft. The mixing roller pre-mixes the materials in the mixing drum to make them evenly mixed. By opening the solenoid valve, the evenly mixed materials fall into the main frame for subsequent processing, thereby improving the mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic front view of the three-dimensional structure of a twin-screw granulator provided by the utility model;

[0018] Figure 2 A schematic side view of the three-dimensional structure of a twin-screw granulator provided by the utility model;

[0019] Figure 3 It is a schematic exploded view of the three-dimensional structure of a twin-screw granulator provided by the utility model;

[0020] Figure 4 A schematic diagram of the shell structure of a twin-screw granulator provided by the utility model;

[0021] Legend:

[0022] 1. Bottom plate; 2. Slide; 3. Support column; 4. Main frame; 5. Solenoid valve; 6. Mixing drum; 7. Feed chute; 8. Mixing motor; 9. Rotating shaft; 10. Mixing roller; 11. Connecting frame; 12. Driving motor; 13. Connecting shaft A; 14. Connecting shaft B; 15. Transmission belt; 16. First shell; 17. Second shell; 18. Fixed block; 19. Screw; 20. Nut; 21. Connecting rod; 22. Fixed plate; 23. Movable rod; 24. Spur gear A; 25. Electric motor; 26. Spur gear B; 27. Bevel gear A; 28. Bevel gear B; 29. ​​Support block; 30. Bidirectional screw; 31. Mold; 32. Positioning pin. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution: a twin-screw granulator, comprising a bottom plate 1, a slidable groove 2 is symmetrically provided on the upper surface of the bottom plate 1, and connecting rods 21 arranged symmetrically and slidably are connected in the middle of the two slidable grooves 2, a first shell 16 is fixedly connected to the upper surface of the slidable groove 2 on one side, and a second shell 17 is fixedly connected to the upper surface of the slidable groove 2 on the other side, and a detachable component is fixedly connected to the side of the bottom plate 1 surface close to the slidable groove 2, and the detachable component comprises a fixed plate 22, a movable rod 23 is rotatably connected to the middle part of the fixed plate 22, and a spur gear A24 is fixedly connected to the middle part of the movable rod 23, and an electric motor 25 is fixedly connected to one side of the upper surface of the fixed plate 22, and the output shaft of the electric motor 25 is transmission-connected to the spur gear B26, and the spur gear B26 and the spur gear A24 are meshed with each other;

[0025] Bevel gears A27 are symmetrically fixedly connected to both ends of the movable rod 23, and support blocks 29 are symmetrically fixedly connected to both sides of the upper surface of the bottom plate 1 located on the slide 2. A bidirectional screw rod 30 is rotatably connected to the middle of the support block 29, and one end of the bidirectional screw rod 30 is transmission-connected to a bevel gear B28, and the bevel gear B28 and the bevel gear A27 are meshed with each other. The connecting rod 21 is threadedly connected to the bidirectional screw rod 30, and the output shaft of the electric motor 25 drives the spur gear A24 to rotate through the spur gear B26. The spur gear A24 drives the bevel gears A27 on both sides to rotate through the movable rod 23. The bevel gear A27 drives the bidirectional screw rod 30 to rotate in the support block 29 through the bevel gear B28, so that the connecting rod 21 moves horizontally in the bidirectional screw rod 30, and the connecting rod 21 drives the first shell 16 and the second shell 17 to slide in the slide 2 respectively, thereby disassembling and assembling the first shell 16 and the second shell 17, which is convenient for cleaning the interior of the granulator and subsequent maintenance, thereby improving the practicality of the device.

[0026] like Figure 1-4 As shown, the upper surfaces of the first shell 16 and the second shell 17 are symmetrically fixedly connected with fixing blocks 18, the middle of the fixing block 18 is inserted with a screw rod 19, and one end of the screw rod 19 is threadedly connected with a nut 20. By screwing the nut 20 in the screw rod 19, the first shell 16 and the second shell 17 are fixed for a second time, thereby improving the stability of the device.

[0027] like Figure 1-4As shown, a support column 3 is fixedly connected to the side of the upper surface of the bottom plate 1 away from the slide 2, a main frame 4 is fixedly connected to the upper surface of the support column 3, a connecting frame 11 is fixedly connected to the outer wall of the main frame 4, a driving motor 12 is fixedly connected to the inner wall of the connecting frame 11, one end of the outer wall of the main frame 4 is rotatably connected to a connecting shaft A13, the other end of the outer wall of the main frame 4 is rotatably connected to a connecting shaft B14, and one end of the output shaft of the driving motor 12 is transmission-connected to the connecting shaft A13, the connecting shaft A13 drives the connecting shaft B14 to rotate through a transmission belt 15, the output shaft of the driving motor 12 drives the connecting shaft A13 to rotate, the connecting shaft A13 drives the connecting shaft B14 to rotate through the transmission belt 15, so that the two groups of threaded rods are granulated.

[0028] like Figure 1-4 As shown, a solenoid valve 5 is fixedly connected to the upper surface of the main frame 4, and a mixing component is fixedly connected to the upper surface of the solenoid valve 5. The mixing component includes a mixing drum 6. Feeding troughs 7 are symmetrically provided on both sides of the upper surface of the mixing drum 6. A mixing motor 8 is fixedly connected to the axis of the upper surface of the mixing drum 6. The output shaft of the mixing motor 8 is transmission-connected to a rotating shaft 9. A plurality of stirring rollers 10 arranged equidistantly are fixedly connected to the surface of the rotating shaft 9. The output shaft of the stirring motor 8 drives the stirring rollers 10 to rotate through the rotating shaft 9. The stirring rollers 10 pre-mix the material in the mixing drum 6 to mix it evenly, and by opening the solenoid valve 5, the evenly mixed material falls into the main frame 4 for subsequent processing, so that the added material is mixed more evenly, thereby improving the subsequent mixing effect.

[0029] like Figure 1-4 As shown, one end of the first shell 16 and the second shell 17 is fixedly connected with a mold 31 through a positioning pin 32. The mold 31 is most likely to be blocked by accumulated materials. The design of the positioning pin 32 facilitates the disassembly of the mold 31 and subsequent cleaning, thereby further improving the practicality of the device.

[0030] Working principle:

[0031] When in use, firstly, various materials are poured into the mixing drum 6 through the feeding trough 7, and the output shaft of the mixing motor 8 drives the mixing roller 10 to rotate through the rotating shaft 9, and the mixing roller 10 pre-mixes the materials in the mixing drum 6 to make them uniformly mixed, and by opening the solenoid valve 5, the uniformly mixed materials fall into the main frame 4 for subsequent processing, and the output shaft of the driving motor 12 drives the connecting shaft A13 to rotate, and the connecting shaft A13 drives the connecting shaft B14 to rotate through the transmission belt 15, so that the two sets of threaded rods are granulated;

[0032] During cleaning, material is easily accumulated due to the gap difference between the twin screws. First, the nut 20 is screwed on and the screw 19 is removed from the fixed block 18. Then, the output shaft of the electric motor 25 drives the spur gear A24 to rotate through the spur gear B26. The spur gear A24 drives the bevel gears A27 on both sides to rotate through the movable rod 23. The bevel gear A27 drives the bidirectional screw 30 to rotate in the support block 29 through the bevel gear B28, so that the connecting rod 21 moves horizontally in the bidirectional screw 30. The connecting rod 21 drives the first shell 16 and the second shell 17 to slide in the slide groove 2 respectively to separate the first shell 16 and the second shell 17, and clean the inside of the device. The mold 31 will also be blocked by accumulated material when used for a long time. By removing the positioning pin 32, the mold 31 is removed for cleaning.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A twin-screw granulator, comprising a bottom plate (1), characterized in that: The upper surface of the base plate (1) is symmetrically provided with slide grooves (2), and the middle parts of the two slide grooves (2) are symmetrically slidably connected with connecting rods (21) arranged at equal distances, and the upper surface of the slide groove (2) on one side is fixedly connected with a first shell (16), and the upper surface of the slide groove (2) on the other side is fixedly connected with a second shell (17), and the surface of the base plate (1) is fixedly connected with a detachable component on the side close to the slide groove (2), and the detachable component includes a fixed plate (22), and the middle part of the fixed plate (22) is rotatably connected with a movable rod (23), and the middle part of the movable rod (23) is fixedly connected with a spur gear A (24), and one side of the upper surface of the fixed plate (22) is fixedly connected with an electric motor (25), and the output shaft of the electric motor (25) is transmission-connected with a spur gear B (26), and the spur gear B (26) and the spur gear A (24) are meshed with each other; The two ends of the movable rod (23) are symmetrically fixedly connected with bevel gears A (27); the upper surface of the bottom plate (1) is symmetrically fixedly connected with support blocks (29) on both sides of the slide groove (2); the middle of the support block (29) is rotatably connected with a bidirectional screw rod (30); one end of the bidirectional screw rod (30) is transmission-connected with a bevel gear B (28), and the bevel gear B (28) and the bevel gear A (27) are meshed with each other; the connecting rod (21) is threadedly connected with the bidirectional screw rod (30).

2. A twin-screw granulator according to claim 1, characterized in that: The upper surfaces of the first shell (16) and the second shell (17) are symmetrically fixedly connected with fixing blocks (18), the middle of the fixing blocks (18) is plugged with a screw rod (19), and one end of the screw rod (19) is threadedly connected with a nut (20).

3. A twin-screw granulator according to claim 1, characterized in that: A support column (3) is fixedly connected to the side of the upper surface of the bottom plate (1) away from the slide groove (2), the upper surface of the support column (3) is fixedly connected to the main frame (4), and the outer side wall of the main frame (4) is fixedly connected to the connecting frame (11).

4. A twin-screw granulator according to claim 3, characterized in that: The inner side wall of the connecting frame (11) is fixedly connected to a driving motor (12); one end of the outer side wall of the main frame (4) is rotatably connected to a connecting shaft A (13); the other end of the outer side wall of the main frame (4) is rotatably connected to a connecting shaft B (14); one end of the output shaft of the driving motor (12) is transmission-connected to the connecting shaft A (13); and the connecting shaft A (13) drives the connecting shaft B (14) to rotate via a transmission belt (15).

5. A twin-screw granulator according to claim 3, characterized in that: The upper surface of the main frame (4) is fixedly connected to a solenoid valve (5), and the upper surface of the solenoid valve (5) is fixedly connected to a mixing assembly, wherein the mixing assembly comprises a mixing drum (6).

6. A twin-screw granulator according to claim 5, characterized in that: Feed troughs (7) are symmetrically provided on both sides of the upper surface of the mixing drum (6); a mixing motor (8) is fixedly connected to the axis of the upper surface of the mixing drum (6); the output shaft of the mixing motor (8) is transmission-connected to a rotating shaft (9); and a plurality of mixing rollers (10) arranged at equal distances are fixedly connected to the surface of the rotating shaft (9).

7. A twin-screw granulator according to claim 1, characterized in that: One end of the first shell (16) and the second shell (17) is fixedly connected to a mold (31) via a positioning pin (32).

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