Variable-speed mixing internal mixer

Abstract

The utility model discloses a variable-speed mixing internal mixer which comprises an outer shell, rotating shafts are symmetrically and rotatably connected to the two ends of an inner cavity of the outer shell, spiral blades are evenly arranged on the rotating shafts in the circumferential direction, an end plate is fixedly arranged at one end of the outer shell, and gaps are formed between the ends, close to the end plate, of the spiral blades and the end plate. A cleaning plate matched with the inner cavity of the outer shell is movably arranged at the end, close to the end plate, of the inner cavity of the outer shell, and first through holes matched with the rotating shaft are symmetrically formed in the middles of the two ends of the cleaning plate. According to the variable-speed mixing internal mixer, through the arranged cleaning plate, when the inner wall of the outer shell, the rotating shaft and the outer wall of the spiral blade need to be cleaned, the cleaning plate can be connected with the spiral blade through pushing of the pushing mechanism, and therefore the cleaning plate can be driven to move when the rotating shaft drives the spiral blade to rotate; and the problem that the inner wall is difficult to clean due to the irregular shape is solved.

Description

Technical Field

[0001] The utility model relates to the field of internal mixers, and particularly relates to a variable-speed mixing internal mixer. Background Art

[0002] An internal mixer, also known as a kneader, is mainly used for the plasticization and mixing of rubber. It is a mechanical device equipped with a pair of rotors with specific shapes that rotate relative to each other, and intermittently plasticizes and mixes polymer materials in a closed state with adjustable temperature and pressure. By setting a speed-regulating motor, the rotation speed of the rotor can be adjusted, making the mixing process more flexible and controllable. By adjusting the speed, it can adapt to different material characteristics and mixing requirements.

[0003] Due to the irregular shapes of the rotor and the inner wall of the housing of the existing internal mixer, it is difficult to clean after discharging, which will affect subsequent use and is inconvenient to use.

[0004] Therefore, it is necessary to propose a variable-speed mixing internal mixer to solve the above problems. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a variable-speed mixing internal mixer, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A variable-speed mixing internal mixer includes an outer housing. At both ends of the inner cavity of the outer housing, rotating shafts are symmetrically and rotatably connected. Along the circumferential direction of the rotating shafts, spiral blades are evenly arranged. One end of the outer housing is fixedly provided with an end plate. There is a gap between one end of the spiral blade close to the end plate and the end plate. At one end of the inner cavity of the outer housing close to the end plate, a cleaning plate adapted to the inner cavity of the outer housing is movably arranged. At the middle parts of both ends of the cleaning plate, first through holes adapted to the rotating shafts are symmetrically arranged. The periphery of the first through holes is evenly provided with through grooves corresponding to and adapted to the spiral blades one by one. The cleaning plate is movably sleeved outside one end of the two rotating shafts close to the end plate through the first through holes;

[0008] It also includes a pushing mechanism for pushing the cleaning plate to the outside of the spiral blade. The pushing mechanism includes a fixed frame fixedly arranged at one end of the outer housing close to the end plate. On the side of the end plate away from the outer housing, a moving frame is arranged. A lead screw is rotatably connected between the fixed frame and the end plate, and the lead screw is in threaded cooperation with the moving frame. At one end of the fixed frame away from the outer housing, a second motor is provided for driving the rotation of the lead screw. An extrusion block is arranged on the moving frame. A second through hole corresponding to the cleaning plate is arranged on the end plate. A sliding rod is movably connected to the second through hole. Thus, the displacement of the moving frame pushes the sliding rod to displace through the extrusion block, and the sliding rod pushes the cleaning plate to displace.

[0009] Preferably, the sliding rod and the cleaning plate are detachably connected through a clamping structure. The clamping structure includes a mounting groove arranged inside the sliding rod. At both ends of the inner side of the mounting groove, clamping rods are symmetrically and rotatably connected. One end of the clamping rod close to the cleaning plate is in a hook shape. A T-shaped block corresponding to the clamping rod is fixedly arranged on the side wall of the cleaning plate, and the end of the T-shaped block is in clamping cooperation with one end of the clamping rod close to the cleaning plate. A trapezoidal block is arranged at the end of the clamping rod far from the cleaning plate, and the outer side of the trapezoidal block is an inclined surface. A second spring is arranged between the two trapezoidal blocks, and when the second spring is in the initial state, the outer end of the trapezoidal block protrudes from the side wall of the sliding rod.

[0010] Preferably, a limiting block is fixedly arranged at one end of the sliding rod far from the end plate, and a first spring is sleeved on the outer side of the sliding rod.

[0011] Preferably, guide plates are symmetrically and slidably connected to the outer sides of both ends of the outer shell. One end of the guide plate close to the end plate is fixedly connected to the moving frame. An opening is arranged at one end of the outer shell far from the end plate, and a sealing cover is arranged at the opening. One end of the guide plate far from the moving frame is fixedly connected to the edge of the sealing cover.

[0012] Preferably, it further includes a driving mechanism for driving the rotation of the rotating shaft. The driving mechanism includes a first motor arranged on the side wall of the outer shell close to one end of the end plate. The output end of the first motor is provided with a driving wheel driven by the first motor to rotate. One end of the rotating shaft close to the end plate extends to the outside of the end plate and is fixedly provided with a driven wheel meshing with the driving wheel.

[0013] Preferably, a chamfer is arranged at the edge of one end of the through groove far from the end plate.

[0014] Compared with the prior art, the utility model provides a variable-speed mixing and kneading machine, which has the following beneficial effects:

[0015] 1. In this variable-speed mixing and kneading machine, there is a gap between the spiral blade and the end plate. Initially, the cleaning plate is located at the gap and will not be affected by the rotation of the rotating shaft and the spiral blade. When it is necessary to clean the inner wall of the outer shell and the outer walls of the rotating shaft and the spiral blade, the connection between the cleaning plate and the spiral blade can be realized by the push of the pushing mechanism. Thus, when the rotating shaft drives the spiral blade to rotate, the cleaning plate can be driven to displace, which is convenient for cleaning the inside of the outer shell and solves the problem of difficult cleaning of the inner wall due to irregular shape.

[0016] 2. The variable-speed mixing and kneading internal mixer is provided with a clamping structure that facilitates the detachable connection between the sliding rod and the cleaning plate. When the sliding rod pushes the cleaning plate onto the spiral blade, it automatically unlocks and separates. When the cleaning plate returns to its original position, it can be automatically fixed, facilitating the separation of the cleaning plate from the spiral blade. The structure is compact, increasing its practicality. By setting the sealing cover, the displacement of the guide plate and the moving frame is synchronized, facilitating the opening for discharging materials. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a schematic structural view of the present utility model in a disassembled state;

[0019] Figure 3 is the present utility model Figure 2 a schematic structural view from another perspective based on the present utility model;

[0020] Figure 4 is a schematic structural view of the present utility model in a state where the cleaning plate, end plate, and sliding rod are separated;

[0021] Figure 5 is the present utility model Figure 4 a schematic structural view from another perspective based on the present utility model;

[0022] Figure 6 is a schematic overall structural view of the moving frame and fixed frame of the present utility model;

[0023] Figure 7 is a schematic top cross-sectional structural view of the present utility model in a state where the sliding rod and T-shaped block are in cooperation.

[0024] In the figures: 1. Outer housing; 2. First motor; 3. Driving wheel; 4. Driven wheel; 5. Guide plate; 6. Moving frame; 7. Fixed frame; 8. Second motor; 9. Sealing cover; 10. Rotating shaft; 11. Spiral blade; 12. Cleaning plate; 13. End plate; 14. First through hole; 15. Through groove; 16. T-shaped block; 17. Second through hole; 18. First spring; 19. Sliding rod; 20. Lead screw; 21. Extrusion block; 22. Installation groove; 23. Clamping rod; 24. Trapezoidal block; 25. Second spring; 26. Limit block. Detailed Embodiment

[0025] In order to make the technical means, creative features, achieved purposes, and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] As Figure 1-7As shown in the figure, a variable-speed mixing internal mixer includes a housing 1. At both ends of the inner cavity of the housing 1, rotating shafts 10 are symmetrically and rotatably connected. Along the circumference of the rotating shafts 10, spiral blades 11 are evenly arranged. One end of the housing 1 is fixedly provided with an end plate 13. It also includes a driving mechanism for driving the rotation of the rotating shafts 10. The driving mechanism includes a first motor 2 arranged on the side wall of the housing 1 near one end of the end plate 13. The output end of the first motor 2 is provided with a driving wheel 3 driven by the first motor 2 to rotate. One end of the rotating shaft 10 near the end plate 13 extends to the outside of the end plate 13 and is fixedly provided with a driven wheel 4 meshing with the driving wheel 3;

[0027] Further, there is a gap between one end of the spiral blade 11 close to the end plate 13 and the end plate 13. A cleaning plate 12 adapted to the inner cavity of the housing 1 is movably arranged at one end of the inner cavity of the housing 1 close to the end plate 13. In the middle of both ends of the cleaning plate 12, first through holes 14 adapted to the rotating shafts 10 are symmetrically arranged. Around the first through holes 14, through grooves 15 corresponding to and adapted to the spiral blades 11 one by one are evenly arranged. Chamfers are arranged at the edges of one end of the through grooves 15 far from the end plate 13. The cleaning plate 12 is movably sleeved outside one end of the two rotating shafts 10 close to the end plate 13 through the first through holes 14;

[0028] Further, it also includes a pushing mechanism for pushing the cleaning plate 12 to the outside of the spiral blade 11. The pushing mechanism includes a fixing frame 7 fixedly arranged at one end of the housing 1 close to the end plate 13. A moving frame 6 is arranged on the side of the end plate 13 far from the housing 1. A lead screw 20 is rotatably connected between the fixing frame 7 and the end plate 13, and the lead screw 20 is in threaded cooperation with the moving frame 6. A second motor 8 for driving the rotation of the lead screw 20 is arranged at one end of the fixing frame 7 far from the housing 1. An extrusion block 21 is arranged on the moving frame 6. A second through hole 17 corresponding to the cleaning plate 12 is arranged on the end plate 13. A sliding rod 19 is movably connected to the second through hole 17. Thus, the displacement of the moving frame 6 pushes the sliding rod 19 to displace through the extrusion block 21, and the sliding rod 19 pushes the cleaning plate 12 to displace;

[0029] By setting a gap between the spiral blade 11 and the end plate 13, the cleaning plate 12 is initially located at the gap and will not be affected by the rotation of the rotating shaft 10 and the spiral blade 11. When it is necessary to clean the inner wall of the housing 1 and the outer walls of the rotating shaft 10 and the spiral blade 11, the connection between the cleaning plate 12 and the spiral blade 11 can be realized by the push of the pushing mechanism. Thus, when the rotating shaft 10 drives the spiral blade 11 to rotate, the cleaning plate 12 can be driven to displace, which is convenient for cleaning the inside of the housing 1 and solves the problem of difficult cleaning of the inner wall due to irregular shape.

[0030] Further, the sliding rod 19 and the cleaning plate 12 are detachably connected through a clamping structure. The clamping structure includes a mounting groove 22 provided inside the sliding rod 19. At both ends of the inner side of the mounting groove 22, clamping rods 23 are symmetrically and rotatably connected. One end of the clamping rod 23 close to the cleaning plate 12 is in a hook shape. A T-shaped block 16 corresponding to the clamping rod 23 is fixedly provided on the side wall of the cleaning plate 12, and the end of the T-shaped block 16 is in clamping fit with one end of the clamping rod 23 close to the cleaning plate 12. A trapezoidal block 24 is provided at the end of the clamping rod 23 away from the cleaning plate 12, and the outer side of the trapezoidal block 24 is an inclined surface. A second spring 25 is provided between the two trapezoidal blocks 24. When the second spring 25 is in the initial state, the outer end of the trapezoidal block 24 protrudes from the side wall of the sliding rod 19. A limiting block 26 is fixedly provided at the end of the sliding rod 19 away from the end plate 13, and a first spring 18 is sleeved on the outer side of the sliding rod 19;

[0031] The detachable connection between the sliding rod 19 and the cleaning plate 12 is facilitated by the provided clamping structure. When the sliding rod 19 pushes the cleaning plate 12 onto the spiral blade 11, it is automatically unlocked and separated. When the cleaning plate 12 is reset, it can be automatically fixed, facilitating the separation of the cleaning plate 12 from the spiral blade 11. The structure is compact, increasing the practicality.

[0032] Further, guide plates 5 are symmetrically and slidably connected to the outer sides of both ends of the outer shell 1. One end of the guide plate 5 close to the end plate 13 is fixedly connected to the moving frame 6. An opening is provided at the end of the outer shell 1 away from the end plate 13, and a sealing cover 9 is provided at the opening. One end of the guide plate 5 away from the moving frame 6 is fixedly connected to the edge of the sealing cover 9. By setting the sealing cover 9, the displacements of the guide plate 5 and the moving frame 6 are synchronized, facilitating opening for discharging.

[0033] It should be noted that the present utility model is a variable-speed mixing and kneading internal mixer. When in use, after the raw materials are added, the first motor 2 is controlled to drive the driving wheel 3 to rotate. The driving wheel 3 drives the driven wheel 4 to rotate. The driven wheel 4 drives the spiral blade 11 to rotate through the rotating shaft 10, thereby realizing the mixing of the materials. The rotation speed and rotation direction of the first motor 2 can be changed to meet different mixing requirements. Moreover, the spiral blade 11 is spiral-shaped, which is convenient for discharging the materials. After the operation is completed, the second motor 8 is controlled to drive the lead screw 20 to rotate. The lead screw 20 drives the moving frame 6 to displace. The moving frame 6 drives the sealing cover 9 to open one end of the outer casing 1 through the guide plate 5. Then the two spiral blades 11 rotate to discharge the materials. After the discharge, the spiral blades 11 stop. The second motor 8 is continuously controlled to operate. Then the pressing block 21 on the moving frame 6 contacts the limiting block 26. Thereby, the limiting block 26 drives the sliding rod 19 to displace. The first spring 18 is compressed. The sliding rod 19 pushes the cleaning plate 12 to displace. As it displaces, the trapezoidal block 24 contacts and is squeezed by the second through hole 17. Thereby, the second spring 25 is compressed. The clamping rod 23 rotates. One end of the clamping rod 23 is separated from the T-shaped block 16. Then the through groove 15 on the cleaning plate 12 is displaced to the spiral blade 11. Subsequently, the first motor 2 is continuously controlled. The spiral blade 11 rotates to realize the displacement of the cleaning plate 12. The periphery of the cleaning plate 12 can clean the inner wall of the outer casing 1. The first through hole 14 and the through groove 15 can clean the rotating shaft 10 and the spiral blade 11. After the cleaning is completed, the first motor 2 rotates in the reverse direction to realize the gradual reset of the cleaning plate 12. And the T-shaped block 16 is displaced to the inner side of the end of the clamping rod 23 again. Then the second motor 8 is controlled to realize the reset of the moving frame 6. The moving frame 6 is separated from the limiting block 26. The first spring 18 is gradually reset. The sliding rod 19 gradually moves outwards. The second spring 25 is gradually reset accordingly. Thereby, the clamping rod 23 rotates and gradually resets. One end of the clamping rod 23 is clamped and fixed to the T-shaped block 16 again. After the clamping, the first spring 18 is gradually fully reset. Thereby, the sliding rod 19 drives the cleaning plate 12 to disengage from the spiral blade 11 through the clamping rod 23. After the cleaning plate 12 is separated from the spiral blade 11, it returns to the gap between the spiral blade 11 and the end plate 13 again to wait for subsequent use. And when the moving frame 6 is reset, the sealing cover 9 can synchronously seal the end of the outer casing 1.

[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements. These changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A variable-speed mixing internal mixer, comprising a housing (1), characterized in that: At both ends of the inner cavity of the outer shell (1), there are symmetrically rotatably connected rotating shafts (10). Along the circumference of the rotating shafts (10), there are evenly arranged spiral blades (11). At one end of the outer shell (1), there is a fixed end plate (13). There is a gap between one end of the spiral blade (11) close to the end plate (13) and the end plate (13). At one end of the inner cavity of the outer shell (1) close to the end plate (13), there is movably arranged a cleaning plate (12) adapted to the inner cavity of the outer shell (1). In the middle of both ends of the cleaning plate (12), there are symmetrically arranged first through holes (14) adapted to the rotating shafts (10). Around the first through holes (14), there are evenly arranged through grooves (15) corresponding to and adapted to the spiral blades (11) one by one. The cleaning plate (12) is movably sleeved on the outer sides of the two rotating shafts (10) close to one end of the end plate (13) through the first through holes (14). It further includes a pushing mechanism. The pushing mechanism is used to push the cleaning plate (12) to the outside of the spiral blade (11). The pushing mechanism includes a fixed frame (7) fixedly arranged at one end of the outer shell (1) close to the end plate (13). On the side of the end plate (13) away from the outer shell (1), there is a moving frame (6). There is a screw rod (20) rotatably connected between the fixed frame (7) and the end plate (13), and the screw rod (20) is in threaded cooperation with the moving frame (6). At one end of the fixed frame (7) away from the outer shell (1), there is a second motor (8) for driving the screw rod (20) to rotate. On the moving frame (6), there is an extrusion block (21). On the end plate (13), there is a second through hole (17) corresponding to the cleaning plate (12). The second through hole (17) is movably connected with a sliding rod (19). Thus, when the moving frame (6) displaces, it pushes the sliding rod (19) to displace through the extrusion block (21), and the sliding rod (19) pushes the cleaning plate (12) to displace.

2. The variable-speed kneading internal mixer according to claim 1, characterized in that: The sliding rod (19) and the cleaning plate (12) are detachably connected through a clamping structure. The clamping structure includes an installation groove (22) arranged on the inner side of the sliding rod (19). At both ends of the inner side of the installation groove (22), there are symmetrically rotatably connected clamping rods (23). One end of the clamping rod (23) close to the cleaning plate (12) is in a hook shape. On the side wall of the cleaning plate (12), there is a T-shaped block (16) corresponding to the clamping rod (23), and the end of the T-shaped block (16) is in clamping cooperation with one end of the clamping rod (23) close to the cleaning plate (12). At one end of the clamping rod (23) away from the cleaning plate (12), there is a trapezoidal block (24), and the outer side of the trapezoidal block (24) is an inclined surface. Between the two trapezoidal blocks (24), there is a second spring (25), and when the second spring (25) is in the initial state, the outer end of the trapezoidal block (24) protrudes from the side wall of the sliding rod (19).

3. The variable-speed mixing internal mixer according to claim 2, wherein: At one end of the sliding rod (19) away from the end plate (13), there is a fixed limit block (26). The outer side of the sliding rod (19) is sleeved with a first spring (18).

4. A variable-speed mixing internal mixer according to claim 1, characterized in that: On the outer sides of both ends of the outer housing (1), guide plates (5) are symmetrically and slidably connected. One end of the guide plate (5) close to the end plate (13) is fixedly connected to the moving frame (6). An opening is provided at one end of the outer housing (1) away from the end plate (13), and a sealing cover (9) is provided at the opening. One end of the guide plate (5) away from the moving frame (6) is fixedly connected to the edge of the sealing cover (9).

5. A variable-speed mixing internal mixer according to claim 1, characterized in that: It further includes a driving mechanism for driving the rotation of the rotating shaft (10). The driving mechanism includes a first motor (2) provided on the side wall of one end of the outer housing (1) close to the end plate (13). The output end of the first motor (2) is provided with a driving wheel (3) driven by the first motor (2) to rotate. One end of the rotating shaft (10) close to the end plate (13) extends to the outside of the end plate (13) and is fixedly provided with a driven wheel (4) meshing with the driving wheel (3).

6. A variable-speed mixing internal mixer according to claim 1, characterized in that: A chamfer is provided at the edge of one end of the through groove (15) away from the end plate (13).

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