A kind of continuous mixer discharging stability improving auger device

Abstract

The utility model provides a kind of auger device for improving the discharging stability of continuous internal mixer, belong to internal mixer technical field, this improve the discharging stability of continuous internal mixer auger device, including horizontal auger, horizontal auger includes rectangular bunker, and one side top end of rectangular bunker top end is provided with loss-in-weight scale inlet, and the other side bottom end is provided with concentrated discharge port;Rectangular bunker inside is provided with spiral shaft, and spiral shaft surface is provided with spiral blade, and spiral shaft is driven by motor in one side of rectangular bunker, for carrying material to be transported to the side of concentrated discharge port;The top end of the middle part of horizontal auger is provided with multiple-component loss-in-weight scale inlet;Horizontal auger is provided with exhaust hole near loss-in-weight scale inlet side;Horizontal auger bottom is provided with support frame;The utility model can solve the problem that traditional double-rotor continuous internal mixer is unstable in production process because of the discharging from upper part, when entering internal mixer, local carbon black is too much, current is unstable, and product performance stability is poor.

Description

Technical Field

[0001] This utility model belongs to the field of internal mixer technology, and more specifically, relates to an auger device for improving the feeding stability of a continuous internal mixer. Background Technology

[0002] In the processing of polymer materials such as rubber and plastics, continuous internal mixers are key equipment for achieving material mixing and plasticization, and their feeding stability directly affects product quality and production efficiency. Currently, mainstream twin-rotor continuous internal mixers generally adopt the traditional feeding process of "loss-weight scale - hopper - twin rotors," where multiple sets of loss-weight scales are centrally arranged above the hopper, and the material is collected in the hopper and then directly enters the mixer. This process is widely used in mass production, but as the requirements for mixing uniformity of high-performance materials increase, its inherent defects are gradually becoming apparent. Specifically, the root cause of the problems in traditional processes lies in the design limitations of the material feeding stage: First, multiple sets of loss-in-weight scales are forced to be arranged in a concentrated manner due to limited installation space. Second, there is no forced conveying structure inside the silo; the material relies solely on gravity to fall naturally. When processing high-viscosity or fibrous materials, material easily forms bridging and sticking on the silo walls, causing intermittent material shortages or local accumulation. This results in uneven distribution of powder components such as carbon black in the material entering the dual rotors. Sudden increases in local concentration can lead to a surge in the load on the internal mixer, with motor current fluctuations exceeding 30%. This not only increases energy consumption but also causes deviations in product performance indicators such as crosslinking degree and hardness due to unstable shear strength. Furthermore, air and volatiles entrained during storage and transportation cannot be discharged in time within the closed silo, creating air resistance and further exacerbating the poor feeding, leading to a 10%-15% extension of the mixing cycle. Existing technologies cannot fundamentally solve the core problem of poor feeding stability. Utility Model Content

[0003] In view of this, the present invention provides an auger device to improve the feeding stability of a continuous internal mixer, which can solve the problem of poor product performance stability caused by unstable feeding from the top of the traditional twin-rotor continuous internal mixer during the production process, resulting in excessive local carbon black and unstable current when entering the internal mixer.

[0004] This utility model is implemented as follows: This utility model provides an auger device for improving the feeding stability of a continuous internal mixer, comprising a horizontal auger, which includes a rectangular hopper. A loss-in-weight weighing inlet is located at the top of one side of the rectangular hopper, and a centralized discharge outlet is located at the bottom of the other side. A spiral shaft is installed inside the rectangular hopper, and spiral blades are installed on the surface of the spiral shaft. The spiral shaft is driven by a motor on one side of the rectangular hopper to transport materials towards the centralized discharge outlet. A multi-component loss-in-weight weighing inlet is located at the top middle section of the horizontal auger. An exhaust port is located on the side of the horizontal auger near the loss-in-weight weighing inlet. A support frame is located at the bottom of the horizontal auger.

[0005] The technical effects of the auger device for improving the feeding stability of a continuous internal mixer provided by this utility model are as follows: The horizontal auger, through a rectangular hopper combined with a spiral shaft and spiral blades, achieves directional and stable material conveying, solving the problem of feeding fluctuations in traditional processes; the dispersed arrangement of the loss-in-weight weigher inlet avoids mutual interference due to space congestion, further ensuring the uniformity of feeding; the exhaust port is provided to promptly discharge gas from the material, preventing poor conveying caused by gas pressure buildup, and improving feeding continuity; the support frame provides stable support for the entire device, ensuring stability during operation, improving the overall state of the material entering the internal mixer, reducing excessive local carbon black, which helps to reduce current fluctuations and improve product performance stability.

[0006] Based on the above technical solution, the auger device for improving the feeding stability of a continuous internal mixer according to this utility model can be further improved as follows: The feed inlet of the loss-in-weight weigher is a cylindrical channel with an opening at the top.

[0007] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the cylindrical channel loss-of-weight weighing inlet design facilitates the smooth flow of materials compared with other shapes, reduces the accumulation and retention of materials at the inlet, further improves the stability and continuity of material feeding, and lays a good foundation for subsequent material conveying and homogenization.

[0008] Furthermore, the diameter of the top opening of the vent is smaller than the diameter of the top opening of the feed port of the loss-in-weight scale.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by making the diameter of the top opening of the exhaust hole smaller than the diameter of the top opening of the feed port of the loss-in-weight scale, it can ensure that the gas can be discharged smoothly and avoid the material from leaking out of the exhaust hole due to the opening being too large. While ensuring the exhaust function, it also ensures the effectiveness of material conveying and maintains the stability of the feeding process.

[0010] Furthermore, the motor is fixedly installed at the end of the rectangular hopper via a mounting bracket, and the motor's output shaft is connected to the screw shaft via a coupling.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of fixing the motor to the end of the rectangular hopper through the fixed base and connecting the output shaft to the screw shaft through the coupling ensures the stability and concentricity of the connection between the motor and the screw shaft, reduces vibration and offset during operation, and enables the screw shaft to rotate stably and uniformly, thereby ensuring the uniformity of material conveying and avoiding material fluctuations caused by unstable power transmission.

[0012] Furthermore, heavy-duty anti-slip feet are provided on both sides of the bottom of the support frame.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by increasing the friction with the ground through heavy-duty anti-slip feet, the device is effectively prevented from sliding or displacing due to vibration or other reasons during operation, which further enhances the stability of the entire device, ensures that the material conveying and unloading process is not affected by the displacement of the device, and maintains the stability of unloading.

[0014] Furthermore, a screw conveyor chute is connected to the centralized discharge port via a quick-connect chuck.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the quick-connect chuck connection of the auger discharge chute facilitates the quick installation and disassembly of the discharge chute, making it convenient for equipment maintenance and cleaning, reducing downtime caused by equipment maintenance, while ensuring the sealing and stability of the connection between the discharge chute and the centralized discharge port, avoiding material leakage at the connection point, and maintaining the continuity and stability of the discharge.

[0016] Furthermore, one end of the screw shaft is connected to the motor output shaft via a coupling, and the other end is rotatably connected to the inner wall of the rectangular hopper via a coupling seat.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of connecting one end of the screw shaft to the motor output shaft through a coupling and rotating the other end to the inner wall of the rectangular hopper through a coupling seat effectively supports both ends of the screw shaft, enhances the stability of the screw shaft during rotation, reduces the bending or vibration that may occur when one end of the screw shaft is suspended, ensures the smoothness of the screw shaft rotation, thereby ensuring the uniformity of material conveying and improving the stability of material feeding.

[0018] Furthermore, the quick-connect chuck has a flange structure and can be detachably installed and fixed by bolts.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the quick-connect chuck adopts a flange structure and is detachably installed and fixed with bolts, which not only ensures the tightness and stability of the connection between the auger discharge chute and the centralized discharge port and prevents material leakage, but also the bolt connection method is easy to adjust and tighten, ensuring the reliability of the connection. At the same time, the detachable design also facilitates the maintenance of the equipment and the replacement of parts, indirectly ensuring the continuity and stability of the feeding process.

[0020] Furthermore, the feed inlet of the multi-component loss-in-weight weigher includes multiple sets of cylindrical openings of different diameters arranged in an orderly manner.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the multi-component loss-in-weight weigher feed port includes multiple sets of cylindrical openings with different diameters and arranged in an orderly manner, which can adapt to the simultaneous feeding of different types and quantities of materials, meet the simultaneous conveying needs of multi-component materials, and the orderly arrangement avoids mutual interference between feed ports, ensures the stability of feeding each material, and is conducive to the initial mixing of multiple materials during the conveying process, thereby improving the uniformity of materials.

[0022] Furthermore, there are two sets of support frames, with the bottom of the heavy-duty anti-slip feet flush with the bottom of the shelves on both sides of the rectangular silo.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the setting of two sets of support frames provides balanced support force for the device, ensuring the horizontal placement of the rectangular silo and avoiding the tilting of the silo caused by unbalanced support, preventing the material from piling up on one side of the silo and affecting the uniformity of conveying; the bottom of the heavy-duty anti-slip feet is flush with the bottom of the shelves on both sides of the rectangular silo, further ensuring the overall horizontal stability of the device, so that the material can be conveyed evenly in a horizontal state, maintaining the stability and continuity of the feeding.

[0024] Compared with existing technologies, the beneficial effects of the auger device for improving the feeding stability of a continuous internal mixer provided by this utility model are as follows: By designing the feeding and conveying structure, the feeding stability and material uniformity of the continuous internal mixer are significantly improved. The horizontal auger design allows multiple sets of loss-in-weight scales to be distributed, avoiding vibration interference caused by concentrated equipment, and reducing the feeding fluctuation range to within ±2%. The forced conveying action of the spiral blades eliminates material bridging and wall adhesion, ensuring continuous and uninterrupted feeding. Simultaneously, the material is repeatedly stirred by the spiral blades during horizontal conveying, achieving preliminary homogenization in the pretreatment stage, improving the uniformity of carbon black and other powder distribution by more than 40%, and controlling the internal mixer motor current fluctuation below 10%. The exhaust port effectively discharges gas entrained in the material, reducing conveying resistance caused by air resistance and shortening the mixing cycle by 8%-12%. The overall device operates stably, reducing product performance index deviation by 30%, significantly improving production efficiency and finished product quality consistency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A front view of an auger device for improving the feeding stability of a continuous internal mixer; Figure 2 A top view of an auger device for improving the feeding stability of a continuous internal mixer; Figure 3 A three-dimensional structural diagram of an auger device for improving the feeding stability of a continuous internal mixer; The attached diagram lists the components represented by each number as follows: 10. Horizontal auger; 11. Rectangular hopper; 12. Loss-in-weight weighing inlet; 13. Centralized discharge port; 14. Screw shaft; 15. Screw blades; 16. Motor; 17. Multi-component loss-in-weight weighing inlet; 18. Vent; 19. Support frame; 20. Fixing base; 21. Coupling; 22. Heavy-duty anti-slip feet; 23. Quick-connect chuck; 24. Auger discharge chute. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figure 1-3 The image shows an embodiment of an auger device for improving the feeding stability of a continuous internal mixer provided by this utility model. In this embodiment, it includes a horizontal auger 10, which includes a rectangular hopper 11. A loss-in-weight weighing inlet 12 is provided at the top of one side of the rectangular hopper, and a centralized discharge inlet 13 is provided at the bottom of the other side. A spiral shaft 14 is provided inside the rectangular hopper, and spiral blades 15 are provided on the surface of the spiral shaft. The spiral shaft is driven by a motor 16 on one side of the rectangular hopper to drive the material to the centralized discharge inlet. A multi-component loss-in-weight weighing inlet 17 is provided at the top of the middle of the horizontal auger. An exhaust port 18 is provided on the side of the horizontal auger near the loss-in-weight weighing inlet. A support frame 19 is provided at the bottom of the horizontal auger.

[0029] In the above technical solution, the feed inlet of the loss-in-weight scale is a cylindrical channel with an open top.

[0030] Furthermore, in the above technical solution, the opening diameter at the top of the vent hole is smaller than the opening diameter at the top of the feed port of the loss-in-weight weigher.

[0031] Furthermore, in the above technical solution, the motor is fixedly installed at the end of the rectangular hopper via a fixed base 20, and the output shaft of the motor is connected to the screw shaft via a coupling 21.

[0032] Furthermore, in the above technical solution, heavy-duty anti-slip foot cups 22 are provided on both sides of the bottom of the support frame.

[0033] Furthermore, in the above technical solution, a screw conveyor 24 is connected to the centralized discharge port via a quick-connect chuck 23.

[0034] Furthermore, in the above technical solution, one end of the screw shaft is connected to the motor output shaft via a coupling, and the other end is rotatably connected to the inner wall of the rectangular hopper via a coupling seat.

[0035] Furthermore, in the above technical solution, the quick-connect chuck has a flange structure and is detachably installed and fixed by bolts.

[0036] Furthermore, in the above technical solution, the feed inlet of the multi-component loss-in-weight weigher includes multiple sets of cylindrical openings with different diameters arranged in an orderly manner.

[0037] Furthermore, in the above technical solution, there are two sets of support frames, and the bottom of the heavy-duty anti-slip feet is flush with the bottom of the side panels of the rectangular silo.

[0038] Specifically, the principle of this invention is as follows: During operation, multiple sets of loss-in-weight scales feed materials into the rectangular hopper of the horizontal auger according to their respective inlets. A motor drives the screw shaft to rotate via a coupling, and the screw blades on its surface propel the material horizontally towards the centralized discharge port. During conveying, the screw blades shear and stir the material, causing the different components to mix initially and achieve pre-homogenization. Gas entrained in the material is discharged through the exhaust port at the top of the hopper, preventing air resistance from hindering the conveying process. Finally, the homogenized material is stably fed into the subsequent collection hopper and forced feeding system through a chute connected by a quick-connect chuck at the centralized discharge port. Support frames and anti-slip feet ensure the overall stability of the device, and the fixed structures at both ends of the screw shaft ensure smooth rotation. Through the synergistic effect of mechanical forced conveying and decentralized discharge, a continuous, stable, and uniform feeding process is achieved.

Claims

1. A auger device for improving the feeding stability of a continuous internal mixer, characterized in that, The system includes a horizontal auger, which comprises a rectangular hopper. A loss-in-weight weighing inlet is located at the top of one side of the hopper, and a centralized discharge outlet is located at the bottom of the other side. Inside the rectangular hopper is a spiral shaft with spiral blades on its surface. The spiral shaft is driven by a motor on one side of the hopper to convey material towards the centralized discharge outlet. A multi-component loss-in-weight weighing inlet is located at the top middle section of the horizontal auger. An exhaust vent is located near the loss-in-weight weighing inlet on the side of the horizontal auger. A support frame is located at the bottom of the horizontal auger.

2. The auger device for improving the feeding stability of a continuous internal mixer according to claim 1, characterized in that, The feed inlet of the loss-in-weight scale is a cylindrical channel with an opening at the top.

3. The auger device for improving the feeding stability of a continuous internal mixer according to claim 2, characterized in that, The diameter of the top opening of the vent is smaller than the diameter of the top opening of the feed inlet of the loss-in-weight scale.

4. The auger device for improving the feeding stability of a continuous internal mixer according to claim 3, characterized in that, The motor is fixedly installed at the end of the rectangular hopper via a mounting bracket, and the motor's output shaft is connected to the screw shaft via a coupling.

5. The auger device for improving the feeding stability of a continuous internal mixer according to claim 4, characterized in that, Heavy-duty non-slip feet are installed on both sides of the bottom of the support frame.

6. The auger device for improving the feeding stability of a continuous internal mixer according to claim 5, characterized in that, A screw conveyor chute is connected to the centralized discharge port via a quick-connect chuck.

7. The auger device for improving the feeding stability of a continuous internal mixer according to claim 6, characterized in that, One end of the screw shaft is connected to the motor output shaft via a coupling, and the other end is rotatably connected to the inner wall of the rectangular hopper via a coupling seat.

8. The auger device for improving the feeding stability of a continuous internal mixer according to claim 7, characterized in that, The quick-connect chuck has a flange structure and can be detachably installed and fixed by bolts.

9. The auger device for improving the feeding stability of a continuous internal mixer according to claim 8, characterized in that, The feed inlet of the multi-component loss-in-weight weigher includes multiple sets of cylindrical openings of different diameters arranged in an orderly manner.

10. The auger device for improving the feeding stability of a continuous internal mixer according to claim 9, characterized in that, There are two sets of support frames, and the bottom of the heavy-duty anti-slip feet is flush with the bottom of the shelves on both sides of the rectangular silo.

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