Circulating feeding and stirring device of extruder

Abstract

The utility model relates to the technical field of stirring, and discloses a circulating feeding stirring device of an extruder, which comprises a base, the top of the base is fixedly connected with a support frame, the top of the support frame is fixedly connected with a stirring barrel, the front side and the rear side of the stirring barrel are rotatably connected with rotating plates, the rear side of the stirring barrel is rotatably connected with a hollow rotating disc, and the hollow rotating disc is fixedly connected with the support frame. A first motor is fixedly connected to the upper middle portion of the rear side of the hollow rotating disc, the output end of the first motor penetrates through the hollow rotating disc and is fixedly connected with a first screw rod, a second screw rod is rotatably connected to the lower middle portion of the front side of the hollow rotating disc, and first gears are fixedly connected to the rear ends of the first screw rod and the second screw rod. The two first gears are connected in a meshed mode. According to the utility model, the motor II drives the gear II to rotate, so that the hollow turntable rotates, materials are stirred and mixed, the materials form a circular flow path, the materials are efficiently stirred, and the stirring barrel cannot be blocked.

Description

Technical Field

[0001] This utility model relates to the field of mixing technology, and in particular to a circulating feed mixing device for an extruder. Background Technology

[0002] In many extrusion processes, the material is composed of multiple components. Additives need to be evenly dispersed in the plastic matrix material. The circulating feed agitator ensures that the different components of the material come into full contact through continuous circulation and agitation. The rotation of the agitator paddle drives the material flow, and the various components collide and diffuse with each other during the flow process, thereby ensuring that the additives are evenly distributed in the main material and avoiding the situation of too much or too little component in some areas, thus ensuring the consistency of the extruded products in terms of performance and appearance.

[0003] A search revealed Chinese Patent Publication No. CN219749024U, which relates to the field of twin-shaft stirring extruders and discloses a twin-shaft stirring extruder capable of uniform feeding. The extruder includes a twin-shaft stirring extruder body, a mounting base plate, a stirring tank fixedly mounted on the top of the mounting base plate, a drive motor fixedly mounted on the outer surface of the stirring tank, a stirring rod fixedly mounted on the output shaft of the drive motor, a discharge pipe embedded inside one end of the stirring tank, a feed pipe embedded inside the stirring tank, a support platform fixedly mounted on the top of the mounting base plate, a movable connection between the support platform and the feed pipe, a uniform feeding component at the top of the support platform, a first fixing hole inside the support platform, and a movable sleeve between the inner cavity of the first fixing hole and the feed pipe. The uniform feeding component includes a support column. This invention not only enables uniform feeding but also allows control over the amount of feed. In practical use, the equipment tends to accumulate material in one place during feeding, leading to insufficient uniformity of output and compromising production quality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a circulating feed and stirring device for an extruder, which aims to improve the problem in the prior art that causes raw material accumulation, resulting in insufficient uniformity of output and inability to guarantee production quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a circulating feeding and stirring device for an extruder, comprising a base, a support frame fixedly connected to the top of the base, a stirring tank fixedly connected to the top of the support frame, a rotating plate rotatably connected to the front and rear sides of the stirring tank, a hollow turntable rotatably connected to the rear side of the stirring tank, a motor I fixedly connected to the upper middle part of the rear side of the hollow turntable, the output end of the motor I passing through the hollow turntable and fixedly connected to a screw rod I, a screw rod II rotatably connected to the lower middle part of the front side of the hollow turntable, a gear I fixedly connected to the rear ends of both the screw rod I and the screw rod II, the two gears I meshing together, a toothed ring fixedly connected to the outer wall of the hollow turntable, a motor II fixedly connected to the rear top of the base, a gear II fixedly connected to the output end of the motor II, the gear II meshing with the toothed ring, a feed inlet opening at the top of the stirring tank, and a feeding mechanism provided at the top of the base.

[0006] Through the above technical solution: First, the material enters the mixing tank through the feed inlet at the top of the mixing tank. Motor 2 starts, and its output end drives gear 2 to rotate. Since gear 2 meshes with the gear ring on the outer wall of the hollow turntable, the hollow turntable rotates around the rear side of the mixing tank. During the rotation of the hollow turntable, motor 1, which is fixedly connected to the upper middle part of its front side, also moves. After motor 1 starts, its output end drives screw 1 to rotate. At the same time, gear 1 at the rear end of screw 1 meshes with gear 1 at the rear end of screw 2, causing screw 2 to rotate as well. The rotation directions of screw 1 and screw 2 are opposite. The rotation of screw 1 and screw 2 stirs and mixes the material in the mixing tank, so that the material can be fully and evenly mixed together. As the hollow turntable continues to rotate, the rotating plate opens and closes continuously, and the material forms a circulating flow path in the mixing tank. Under the stirring action of screw 1 and screw 2 and the circulating flow of the material itself, the material is efficiently stirred.

[0007] As a further description of the above technical solution:

[0008] The feeding mechanism includes a feeding box, the bottom of which is fixedly connected to the top of the base. A groove is provided on the front side of the feeding box, and a filter plate is slidably connected inside the groove. A horizontal plate is fixedly connected to the front side of the filter plate. Sliding grooves are provided on both the left and right sides inside the feeding box, and sliding plates are fixedly connected to both the left and right sides of the filter plate.

[0009] Through the above technical solution: the material is first conveyed into the feed box. During the feeding process, the material falls onto the filter plate. When the filter plate needs to be cleaned, the filter plate is pulled forward by pulling the horizontal plate, thereby pulling the filter plate out of the feed box. During normal feeding, the filter plate can perform preliminary screening and filtration of the material, intercepting large particles or foreign objects in the material, making the material entering the mixing tank purer, and avoiding impurities from having an adverse effect on the mixing process and the subsequent operation of the extruder.

[0010] As a further description of the above technical solution:

[0011] A switch is fixedly connected to the top left side of the base, and the switch is electrically connected to motor one and motor two respectively.

[0012] The above technical solution involves installing a switch on the top left side of the base, which is electrically connected to motor one and motor two respectively. Its main function is to control the start and stop of motor one and motor two.

[0013] As a further description of the above technical solution:

[0014] An observation window is provided on the left side of the mixing tank, and a sealing plate is fixedly connected to the left side of the observation window.

[0015] The above technical solution allows operators to directly observe the mixing of materials inside the mixing tank, including the degree of mixing and whether there is any abnormal agglomeration.

[0016] As a further description of the above technical solution:

[0017] A fixing plate is fixedly connected to the front right end of the feed box, and a fixing bolt is rotatably connected to the right side of the fixing plate. A reserved hole is opened on the right side of the horizontal plate.

[0018] The above technical solution allows the filter plate to be fixed in the feed box when it is in the working position by screwing the fixing bolts into the reserved holes of the horizontal plate.

[0019] As a further description of the above technical solution:

[0020] The two sliding grooves are provided with grooves on the upper and lower sides inside, and the two sliding plates are fixedly connected with sliders on the upper and lower sides.

[0021] The above technical solution allows the filter plate to slide more smoothly within the feed box through the cooperation of the slider and the groove.

[0022] As a further description of the above technical solution:

[0023] An extrusion port is provided on the lower front side of the mixing tank, and a discharge pipe is connected inside the extrusion port.

[0024] With the above technical solution, the material can enter the discharge pipe through the extrusion port, and the discharge pipe can transport the mixed material to subsequent processing equipment or storage containers.

[0025] As a further description of the above technical solution:

[0026] A handle is fixedly connected to the front side of the horizontal plate, and the back side of the handle has a smooth design.

[0027] The above technical solution allows operators to easily pull the horizontal plate, thereby causing the filter plate to slide within the feed box.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the material enters the mixing tank through the feed inlet at the top of the mixing tank. The second motor drives the second gear to rotate, causing the hollow turntable meshing with the gear ring to rotate. The first motor on the front side moves and starts, driving the first screw rod to rotate. The first screw rod drives the second screw rod to rotate in the opposite direction through the first gear, thereby achieving mixing of the material. At the same time, the continuous rotation of the hollow turntable causes the rotating plate to open and close continuously, so that the material forms a circulating flow path. The efficient mixing of the material prevents the mixing tank from clogging.

[0030] 2. In this utility model, the material is first conveyed into the feed box and falls onto the filter plate. During normal feeding, the filter plate performs preliminary screening and filtration of the material, intercepting large particles or foreign objects, making the material entering the mixing tank purer and effectively avoiding the adverse effects of impurities on mixing and subsequent extruder operation. When the filter plate needs to be cleaned, the filter plate is slid forward and pulled out of the feed box by pulling the horizontal plate, making cleaning and maintenance convenient. Attached Figure Description

[0031] Figure 1 This is a perspective view of a circulating feed mixing device for an extruder according to the present invention;

[0032] Figure 2 This is a side view of the structure of a circulating feed mixing device for an extruder proposed in this utility model;

[0033] Figure 3 This is a structural exploded view of a circulating feed mixing device for an extruder proposed in this utility model;

[0034] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0035] Figure 5 This is a cross-sectional view of the structure of a circulating feed and stirring device for an extruder proposed in this utility model.

[0036] Legend:

[0037] 1. Base; 2. Feeding mechanism; 201. Feed box; 202. Groove; 203. Filter plate; 204. Horizontal plate; 205. Sliding groove; 206. Sliding plate; 3. Support frame; 4. Mixing tank; 5. Hollow turntable; 6. Turning plate; 7. Motor 1; 8. Screw rod 1; 9. Screw rod 2; 10. Gear 1; 11. Gear ring; 12. Motor 2; 13. Gear 2; 14. Feed inlet; 15. Switch; 16. Sealing plate; 17. Observation window; 18. Fixing plate; 19. Fixing bolt; 20. Reserved hole; 21. Slide groove; 22. Slider; 23. Handle; 24. Extrusion port; 25. Discharge pipe. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 5This utility model provides an embodiment of a circulating feed mixing device for an extruder, comprising a base 1, which supports the entire device. A support frame 3 is fixedly connected to the top of the base 1, which is used to fix the position of a mixing tank 4. The mixing tank 4 is the place where materials are mixed. Rotary plates 6 are rotatably connected to the front and rear sides of the mixing tank 4. The rotary plates 6 can open and close when the mixing tank 4 rotates to control the material circulation path. A hollow turntable 5 is rotatably connected to the rear side of the mixing tank 4. The hollow turntable 5 provides a foundation for the rotation of other components and can drive the movement of related components. A motor 7 is fixedly connected to the upper middle part of the rear side of the hollow turntable 5. The motor 7 provides power for the rotation of a screw rod 8. The output end of the motor 7 passes through the hollow turntable 5 and is fixedly connected to the screw rod 8. The screw rod 8 mixes materials by rotating. A screw rod 9 is rotatably connected to the lower middle part of the front side of the hollow turntable 5. The screw rod 9 and the screw rod 8 mix materials together. The rear ends of each component are fixedly connected to gear 10. Gear 10 enables the screw rod 8 and screw rod 9 to move together. The two gears 10 mesh to ensure that the screw rod 8 and screw rod 9 rotate in opposite directions. A gear ring 11 is fixedly connected to the outer wall of the hollow turntable 5. The gear ring 11 can cooperate with gear 2 13 to make the hollow turntable 5 rotate. A motor 2 12 is fixedly connected to the rear top of the base 1. The motor 2 12 provides power for the rotation of the hollow turntable 5. Gear 2 13 is fixedly connected to the output end of the motor 2 12. 3. Gear 2 13 meshes with gear ring 11, thereby driving the hollow turntable 5 to rotate. The top of the mixing tank 4 is provided with a feed port 14, which facilitates the entry of materials into the mixing tank 4. The top of the base 1 is provided with a feeding mechanism 2, which can pre-process the materials entering the mixing tank 4. The lower front part of the mixing tank 4 is provided with an extrusion port 24, which is the outlet position of the mixed materials. The inside of the extrusion port 24 is connected to a discharge pipe 25, which transports the mixed materials to the subsequent stages.

[0040] Specifically, the material first enters the mixing tank 4 through the feed inlet 14 at the top of the mixing tank 4. The second motor 12 starts, and its output end drives the second gear 13 to rotate. Since the second gear 13 is engaged with the gear ring 11 on the outer wall of the hollow turntable 5, the hollow turntable 5 rotates around the rear side of the mixing tank 4. During the rotation of the hollow turntable 5, the first motor 7, which is fixedly connected to the upper middle part of its front side, also moves. After the first motor 7 starts, its output end drives the first screw rod 8 to rotate. At the same time, the gear 10 at the rear end of the first screw rod 8 engages with the gear ring 11 at the rear end of the second screw rod 9. When wheel 10 meshes, screw 2 9 also rotates, and screw 1 8 and screw 2 9 rotate in opposite directions. The rotation of screw 1 8 and screw 2 9 mixes the material in the mixing tank 4, ensuring that the material is fully and evenly mixed together. As the hollow turntable 5 continues to rotate, the rotating plate 6 opens and closes continuously, and the material forms a circulating flow path in the mixing tank 4. Under the stirring action of screw 1 8 and screw 2 9 and the circulating flow of the material itself, the material is efficiently mixed. The material can enter the discharge pipe 25 through the extrusion port 24, and the discharge pipe 25 can transport the mixed material to subsequent processing equipment or storage containers.

[0041] Reference Figure 3 and Figure 4 The feeding mechanism 2 includes a feeding box 201, which is used to temporarily store the material to be fed into the mixing tank 4. The bottom of the feeding box 201 is fixedly connected to the top of the base 1, so that it is stably placed in the device. A groove 202 is provided on the front side of the feeding box 201, which provides space for the sliding of the filter plate 203. The filter plate 203 is slidably connected inside the groove 202, and the filter plate 203 can perform preliminary filtration of the material. A horizontal plate 204 is fixedly connected to the front side of the filter plate 203, which facilitates the operator to pull the filter plate 203. The feed box 201 has sliding grooves 205 on both the left and right sides. The sliding grooves 205 are used to guide the left and right movement of the filter plate 203. The left and right sides of the filter plate 203 are fixedly connected to sliding plates 206. The sliding plates 206 cooperate with the sliding grooves 205 to achieve stable sliding. The upper and lower sides of the two sliding grooves 205 are provided with sliding grooves 21. The sliding grooves 21 further limit the movement trajectory of the sliding plates 206. The upper and lower sides of the two sliding plates 206 are fixedly connected to sliders 22. The sliders 22 slide in the sliding grooves 21 to make the filter plate 203 slide more smoothly.

[0042] Specifically, the material is first conveyed into the feed box 201. During the feeding process, the material falls onto the filter plate 203. When the filter plate 203 needs to be cleaned, the filter plate 203 is moved forward by pulling the horizontal plate 204, thereby pulling the filter plate 203 out of the feed box 201. During normal feeding, the filter plate 203 can perform preliminary screening and filtration of the material, intercepting large particles or foreign objects in the material, making the material entering the mixing tank 4 purer, and avoiding the adverse effects of impurities on the mixing process and the subsequent operation of the extruder. The cooperation between the slider 22 and the chute 21 makes the sliding of the filter plate 203 in the feed box 201 more stable.

[0043] Reference Figure 1 , Figure 2 and Figure 5 A switch 15 is fixedly connected to the top left side of the base 1. The switch 15 is the control center for motor 7 and motor 12, which can easily turn motor 7 and motor 12 on or off, thereby controlling the power system of the entire mixing device. An observation window 17 is provided on the left side of the mixing tank 4. The observation window 17 provides a direct view of the mixing of materials inside the mixing tank 4, which is convenient for operators to monitor the mixing process in real time. A sealing plate 16 is fixedly connected to the left side of the observation window 17. The sealing plate 16 prevents materials from leaking from the observation window 17 during the mixing process, and also prevents external impurities from entering the mixing tank 4 and interfering with the mixing operation. A fixing plate 18 is fixedly connected to the front right end of the feed box 201. The fixing plate 18 is a fixing screw. Bolt 19 provides a stable installation base. Fixing bolt 19 is rotatably connected to the right side of fixing plate 18. Fixing bolt 19 can be screwed into the reserved hole 20 of horizontal plate 204 to firmly lock filter plate 203 in working position and prevent it from shifting during feeding. The reserved hole 20 is opened on the right side of horizontal plate 204. The reserved hole 20 cooperates with fixing bolt 19 to achieve stable fixation of filter plate 203. Handle 23 is fixedly connected to the front side of horizontal plate 204. Handle 23 makes it convenient for operators to apply force and pull horizontal plate 204 and filter plate 203 connected to it. The rear side of handle 23 adopts a smooth design. The smooth design effectively prevents the operator's hand from being scratched during the pulling process, improving the safety and comfort of operation.

[0044] Specifically, switch 15 is installed on the top left side of base 1. It is electrically connected to motor 7 and motor 12 respectively. Its main function is to control the start and stop of motor 7 and motor 12. Observation window 17 is opened on the left side of mixing tank 4. Sealing plate 16 is fixedly connected to the left side of observation window 17. The presence of observation window 17 allows the operator to intuitively observe the mixing of materials inside mixing tank 4. When filter plate 203 is in the working position, by screwing fixing bolt 19 into the reserved hole 20 of horizontal plate 204, filter plate 203 can be fixed in feed box 201. Handle 23 is fixedly connected to the front side of horizontal plate 204. Its rear side adopts a smooth design. Handle 23 makes it convenient for the operator to pull horizontal plate 204, thereby driving filter plate 203 to slide in feed box 201.

[0045] Working Principle: When using a circulating feed mixing device for an extruder, the material first enters the mixing tank 4 through the feed inlet 14 at the top of the mixing tank 4. Motor 2 12 starts, and its output drives gear 2 13 to rotate. Since gear 2 13 meshes with the gear ring 11 on the outer wall of the hollow turntable 5, the hollow turntable 5 rotates around the rear side of the mixing tank 4. During the rotation of the hollow turntable 5, motor 1 7, fixedly connected to its upper front side, also moves. After motor 1 7 starts, its output drives the screw rod 1 8 to rotate. Simultaneously, gear 1 10 at the rear end of screw rod 1 8 meshes with gear 1 10 at the rear end of screw rod 2 9, causing screw rod 2 9 to rotate as well. The rotation directions of screw rod 1 8 and screw rod 2 9 are opposite. The rotation of screw rod 1 8 and screw rod 2 9 mixes and stirs the material in the mixing tank 4, causing the material to... The materials can be fully and evenly mixed together. As the hollow turntable 5 continues to rotate, the rotating plate 6 opens and closes continuously, and the materials form a circulating flow path in the mixing tank 4. Under the stirring action of the first screw 8 and the second screw 9, as well as the circulating flow of the materials themselves, the materials are efficiently stirred. The materials are first conveyed into the feed box 201. During the feeding process, the materials fall onto the filter plate 203. When it is necessary to clean the filter plate 203, the filter plate 203 is pulled forward by pulling the horizontal plate 204, thereby pulling the filter plate 203 out of the feed box 201. During normal feeding, the filter plate 203 can perform preliminary screening and filtration of the materials, intercepting large particles or foreign objects in the materials, making the materials entering the mixing tank 4 purer, and avoiding the adverse effects of impurities on the stirring process and the subsequent operation of the extruder.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating feed mixing device for an extruder, comprising a base (1), characterized in that: A support frame (3) is fixedly connected to the top of the base (1), and a stirring tank (4) is fixedly connected to the top of the support frame (3). A rotating plate (6) is rotatably connected to the front and rear sides of the stirring tank (4). A hollow turntable (5) is rotatably connected to the rear side of the stirring tank (4). A motor (7) is fixedly connected to the upper middle part of the rear side of the hollow turntable (5). The output end of the motor (7) passes through the hollow turntable (5) and is fixedly connected to a screw rod (8). A screw rod (9) is rotatably connected to the lower middle part of the front side of the hollow turntable (5). Gear 1 (10) is fixedly connected to the rear end of both the first rotating rod (8) and the second spiral rod (9). The two gears 1 (10) mesh with each other. A toothed ring (11) is fixedly connected to the outer wall of the hollow turntable (5). A motor 2 (12) is fixedly connected to the rear top of the base (1). A gear 2 (13) is fixedly connected to the output end of the motor 2 (12). The gear 2 (13) meshes with the toothed ring (11). A feed inlet (14) is opened at the top of the mixing tank (4). A feeding mechanism (2) is provided at the top of the base (1).

2. The circulating feed mixing device for an extruder according to claim 1, characterized in that: The feeding mechanism (2) includes a feeding box (201), the bottom of which is fixedly connected to the top of the base (1). A groove (202) is provided on the front side of the feeding box (201), and a filter plate (203) is slidably connected inside the groove (202). A horizontal plate (204) is fixedly connected to the front side of the filter plate (203). Sliding grooves (205) are provided on both the left and right sides inside the feeding box (201), and sliding plates (206) are fixedly connected to both the left and right sides of the filter plate (203).

3. The circulating feed mixing device for an extruder according to claim 1, characterized in that: A switch (15) is fixedly connected to the top left side of the base (1), and the switch (15) is electrically connected to motor one (7) and motor two (12) respectively.

4. The circulating feed mixing device for an extruder according to claim 1, characterized in that: An observation window (17) is provided on the left side of the mixing tank (4), and a sealing plate (16) is fixedly connected to the left side of the observation window (17).

5. The circulating feed mixing device for an extruder according to claim 2, characterized in that: A fixing plate (18) is fixedly connected to the front right end of the feed box (201), and a fixing bolt (19) is rotatably connected to the right side of the fixing plate (18). A reserved hole (20) is opened on the right side of the horizontal plate (204).

6. The circulating feed mixing device for an extruder according to claim 2, characterized in that: The two sliding grooves (205) are provided with sliding grooves (21) on the upper and lower sides, and the two sliding plates (206) are fixedly connected with sliders (22) on the upper and lower sides.

7. The circulating feed mixing device for an extruder according to claim 1, characterized in that: The mixing tank (4) has an extrusion port (24) in the lower middle part of the front side, and the inside of the extrusion port (24) is connected to the discharge pipe (25).

8. The circulating feed mixing device for an extruder according to claim 2, characterized in that: A handle (23) is fixedly connected to the front side of the horizontal plate (204), and the rear side of the handle (23) is designed with a smooth shape.

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