Improved ring die forming machine device with anti-lumping structure

Abstract

The utility model belongs to the technical field of biomass forming auxiliary equipment, and relates to an improved device of a circular mould forming machine with an anti-lump structure, which comprises a layer breaking and material stirring fan, a compression roller and a pelletizing device which are arranged in a pressing chamber, a driving motor is connected with a transmission system through a synchronous belt, and the transmission system is connected with the pressing chamber. The layer breaking and material stirring fan, the pressing roller and the pelletizing device are sequentially installed in the pressing chamber from top to bottom through the transmission system, an annular mold is fixedly installed in the pressing chamber, and the pressing roller is located in the annular mold. Through active intervention of the layer breaking and material stirring fan, acting force is applied to materials, the flow direction of the materials is changed, the side wall of the pressing chamber is cleaned, backflow materials are prevented from forming a hard material layer, the materials in the pressing chamber are guided and distributed, material lumping is avoided, the materials are distributed in the pressing direction of the pressing roller, and the effective operation time is prolonged; the synchronous belt drives the transmission system to accurately match the rotating speed of the compression roller and the feeding rate, so that the mechanical loss is reduced and the transmission efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of biomass molding auxiliary equipment technology, and in particular to an improved device for a ring die molding machine with an anti-clogging structure. Background Technology

[0002] Ring die forming machines, as key equipment that compresses powdery raw materials into high-density pellets through mechanical pressure, are widely used in industrial fields such as pelleted feed, biomass fuel, and organic fertilizer. Their core structure includes a ring die, pressure rollers, and a pelletizing device; material extrusion is achieved through the relative rotation of the pressure rollers and the ring die.

[0003] Currently, ring die forming machines generally suffer from the problem of material lumps in the pressing chamber, which seriously restricts the stability of equipment operation and production efficiency. When the instantaneous feed rate exceeds the processing capacity of the pressure roller, the material that is not compressed in time is prone to flow back through the gap between the pressure roller and the ring die, forming a hard material layer with a thickness of 20-30cm on the inner wall of the hopper.

[0004] The continuous accumulation of backflow material will directly block the feed channel, forcing the equipment to frequently stop operation to clean up the accumulated material, resulting in a shortened effective working time; the reverse material will generate non-designed frictional impact on the surface of the pressure roller, shortening the service life of key components.

[0005] Traditional solutions can only alleviate the material clumping problem by passively reducing the feeding speed or increasing the frequency of downtime. However, such measures come at the cost of production capacity and cannot fundamentally solve the technical contradiction between material backflow and material accumulation. Therefore, the structure of the ring die forming machine is improved by actively intervening in the material flow direction and pressure distribution to achieve the dual technical goals of preventing material clumping and high-efficiency forming. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides an improved device for a ring die forming machine with an anti-clogging structure.

[0007] The technical solution of this utility model is achieved through the following scheme: an improved device for a ring die forming machine with an anti-bulging structure, comprising a support frame, a drive motor, a pressing chamber, and a layer-breaking and material-discharging fan. The support frame is equipped with a drive motor, a transmission system, and a pressing chamber. The pressing chamber is provided with a layer-breaking and material-discharging fan, a pressure roller, and a pelletizing device. The drive motor is connected to the transmission system via a synchronous belt. The transmission system is connected to the pressing chamber. The layer-breaking and material-discharging fan, the pressure roller, and the pelletizing device are sequentially installed in the pressing chamber from top to bottom via the transmission system. A ring die is fixedly installed in the pressing chamber, and the pressure roller is located inside the ring die.

[0008] Preferably, the layer-breaking material-dispensing fan is located at the feed inlet of the pressing chamber, and the layer-breaking material-dispensing fan is truncated cone-shaped.

[0009] Preferably, the layer-breaking material-dispensing fan includes an upper material-dispensing fan, a material layer scraper roller, and a lower material-dispensing fan, with the material layer scraper roller located between the upper and lower material-dispensing fans, and the surface of the material layer scraper roller is provided with a spiral guide groove.

[0010] Preferably, the transmission system includes an input roller, a bevel gear transmission component, and an output roller. The input roller and the output roller are both mounted on a support frame via bearing supports. The input roller is connected to the output roller via the bevel gear transmission component, and the drive motor drives the input roller.

[0011] Preferably, the output roller passes through the pressing chamber, and the layer-breaking and feeding fan, pressure roller and pelletizing device are all installed in the pressing chamber by rotating the output roller.

[0012] Preferably, the pressing chamber is fixedly mounted on the support frame.

[0013] Preferably, the pelletizing device is equipped with an annular mold via a bearing, and the annular mold is connected to the transmission system via the bearing.

[0014] Preferably, the annular mold is provided with an extension, which is mounted on the pelletizing device via a bearing.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. This utility model applies force to the material through the active intervention of the layer-breaking and material-pushing fan, changes the material flow direction, and cleans the side wall of the pressing chamber to prevent backflow material from forming a hard material layer. It also guides and distributes the material in the pressing chamber to prevent clumping and ensures that the material is distributed in the pressing direction of the pressure rollers. This ensures that the equipment can operate continuously and stably, extends the effective working time, and significantly improves production efficiency. The synchronous belt drives the transmission system to precisely match the speed of the pressure rollers with the feeding rate, reducing mechanical wear and improving transmission efficiency.

[0017] 2. The upper feed fan intervenes in the material entering the pressing chamber immediately, initially dispersing and stirring the material to loosen it and reduce adhesion and agglomeration. Finally, the lower feed fan pushes the material dispersed by the upper feed fan and broken by the material layer scraper into the pressing area, ensuring that the material can enter the space between the pressure roller and the ring die for compression molding evenly and stably, thus improving the material utilization rate and molding quality.

[0018] 3. The material layer scraper roller rotates with the two material feeding fans to clean the inner wall of the pressing chamber in real time. In conjunction with the spiral guide groove on its surface, it breaks and scrapes off the hard material layer adhering to the inner wall, effectively improving the friction between the scraper and the inner wall of the pressing chamber and the cleaning effect. The spiral guide groove can also play a certain role in stirring and dispersing the material, making the material looser and more uniform, which helps the material to be rationally distributed in the pressing chamber, further improving the effect of preventing material clumping and molding quality.

[0019] 4. Belt drive enables smooth start-up and buffering, absorbing part of the impact load during motor startup, avoiding excessive instantaneous stress on the subsequent transmission system. In conjunction with the input roller supported by bearings, it minimizes impact load, ensures smooth rotation of the input roller, reduces vibration sources, and thus ensures stable power transmitted to the output roller through the bevel gear transmission, maintains stable bevel gear meshing angle accuracy, and ensures stable equipment operation.

[0020] 5. Coaxial installation ensures synchronous rotation. The synchronous rotation of the pressure roller and the pelletizing device ensures that the pellets can be cut in time after forming, ensuring that the length and shape of the pellets meet the requirements. The synchronous cooperation between the layer breaking and feeding fan and the pressure roller can achieve the best dispersion and guidance effect when the material enters the pressing area, improving the forming quality. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the transmission system structure of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the pressing chamber of this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the pressing chamber of this utility model;

[0025] Figure 5 This is a three-dimensional cross-sectional view of the pressing chamber of this utility model;

[0026] Figure 6 This is a schematic diagram of the internal assembly structure of the pressing chamber of this utility model.

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the layer-breaking and material-removing fan of this utility model.

[0028] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Layer breaking and feeding fan; 21. Upper feeding fan; 22. Material layer scraper; 23. Lower feeding fan; 3. Transmission system; 31. Input roller; 32. Bevel gear transmission component; 33. Output roller; 4. Ring mold; 5. Pressure roller; 6. Pelletizing device; 7. Receiving box; 8. Pressing chamber; 101. Drive motor; 401. Extension section. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] An improved device for a ring die forming machine with an anti-bulking structure, such as... Figures 1-7 As shown, the device includes a support frame 1, a drive motor 101, a pressing chamber 8, and a layer-breaking feeding fan 2. The support frame 1 is equipped with the drive motor 101, a transmission system 3, and the pressing chamber 8. The pressing chamber 8 contains the layer-breaking feeding fan 2, a pressure roller 5, and a pelletizing device 6. The drive motor 101 is connected to the transmission system 3 via a synchronous belt. The transmission system 3 is connected to the pressing chamber 8. The layer-breaking feeding fan 2, pressure roller 5, and pelletizing device 6 are sequentially installed from top to bottom within the pressing chamber 8 via the transmission system 3. A ring mold 4 is fixedly installed inside the pressing chamber 8, and the pressure roller 5 is located within the ring mold 4. A discharge port is opened on the side wall of the pressing chamber 8. A receiving box 7 is placed on the support frame 1 facing the chamber. The pressing chamber 8 is fixedly installed on the support frame 1, and the pressing chamber 8 itself is in a fixed state. The transmission system 3 passes through the pressing chamber. 8 drives its internal device. The pelletizing device 6 is equipped with an annular mold 4 through bearings. The annular mold 4 is connected to the transmission system 3 through bearings. The double bearing connection allows the annular mold 4 to easily avoid rotational force and avoid mold displacement caused by the transmission system 3. The layer breaking and material pushing fan 2 is located at the feed inlet of the pressing chamber 8. The layer breaking and material pushing fan 2 is frustum-shaped and located in the core area of ​​the feed inlet. It forms a centripetal guiding force on the incoming material, effectively clearing and destroying the backflow material layer on the side wall of the pressing chamber 8. The crushed material tilts and falls, entering the layer breaking and material pushing fan 2 for hard decomposition, and becomes non-hard material again. The centrifugal airflow generated by the rotation makes the material move and disperse at all times, preventing uncompressed material from flowing back through the gap between the pressure roller 5 and the ring mold, eliminating the conditions for the formation of lumps from the source.

[0032] like Figure 4 and Figure 5 As shown, the annular mold 4 is provided with an extension part 401. The extension part 401 is mounted on the pelletizing device 6 through a bearing. The extension part 401 and the annular mold 4 are an integral structure. The extension part 401 does not have a discharge hole, so that the multiple discharge holes are far away from the base of the pelletizing device 6. The material has more space during the discharge process and will not be restricted or interfered with by the base due to being too close to it. This effectively avoids the occurrence of pellet blockage and improves the smoothness and continuity of pelletizing.

[0033] like Figure 4 and Figure 5As shown, the pelletizing device 6 consists of a disc rotatably mounted on the output roller 33 and cutting blades fixedly mounted on the disc. The number of cutting blades is preferably three, which are arranged in an array along the circumference of the disc to cut and shape the material pressed out by the pressure roller 5 from the annular mold 4.

[0034] like Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the material feeding fan 2 includes an upper feeding fan 21, a material layer scraper roller 22, and a lower feeding fan 23. The material layer scraper roller 22 is located between the upper feeding fan 21 and the lower feeding fan 23, maintaining a 100mm gap with the hopper wall. The surface of the material layer scraper roller is provided with a spiral guide groove. The upper feeding fan 21 is slightly smaller than the lower feeding fan 23. The material layer scraper rollers 22 are inclined, preferably four in number, evenly distributed along the circumference to form a spiral downward material guiding channel. The upper and lower ends are welded to the two feeding fans, forming a frustum shape. When the hard material layer of the reverse extrusion comes into contact with the material layer scraper roller 22, the spiral guide groove on it deconstructs and disperses the hard layer. The inclined angle generates a downward component force to guide the material back and fall into the lower feed fan 23. As the lower feed fan 23 rotates, it is further deconstructed, which facilitates subsequent pressing and molding, improves the quality and consistency of the pressed particles, and ensures the stability of the pressed particles. The spiral guide groove is a thread with a height of 3-5mm and a tungsten carbide wear-resistant coating on the surface. It performs multi-point shearing and crushing on the hard layer of the reverse extruded material to destroy the hard layer.

[0035] The upper feed fan 21, serving as the initial screening module for material feeding, adopts a lightweight, streamlined blade design. The blade width is 15%-20% narrower than that of the lower feed fan 23, reducing feeding resistance while enhancing the centripetal guidance capability of loose materials. This makes it easier for loose materials to form a continuous flow when entering the pressing chamber 8. The lower feed fan 23 further guides the material after it passes through the upper feed fan 21, preventing the material from accumulating in a localized area due to gravity, which would cause the material to compact and form clumps. During rotation, it generates a spiral propulsion force, causing the material to be evenly distributed along the radial direction of the fan body in the pressing direction of the pressure roller 5, thereby improving pressing efficiency.

[0036] like Figure 7 As shown, the supporting circular wall of the upper feed fan 21 and the supporting circular wall of the lower feed fan 23 are both chamfered and triangular in shape towards the feed inlet to reduce material retention. The upper and lower feed fans effectively stabilize the material layer scraper 22 and disperse the force when the material layer scraper 22 damages the hard material layer.

[0037] like Figure 2As shown, the transmission system 3 includes an input roller 31, a bevel gear transmission component 32, and an output roller 33. Both the input roller 31 and the output roller 33 are mounted on the support frame 1 via bearing supports. The input roller 31 is connected to the output roller 33 via the bevel gear transmission component 32. The drive motor 101 drives the input roller 31. The input roller 31 is horizontally mounted on the support frame 1 via bearing supports at both ends for rotational movement. The double bearing support achieves a high-rigidity cantilever structure, adapting to the radial impact load generated by the high-speed belt drive of the motor, ensuring the stability of the bevel gear meshing angle accuracy, and reducing equipment vibration caused by transmission instability. The output roller is vertically mounted on the support frame 1 by a bearing support component, and the two are connected by the bevel gear transmission component 32. The input roller 31 has double bearings and a rigid bevel gear meshing, which can buffer the impact of high-speed motor start-up and shutdown and belt drive fluctuations on the output roller. The bevel gear transmission is highly efficient and adaptable, achieving smooth power transition and effective utilization, reducing power loss during transmission, and improving the energy conversion efficiency of the entire transmission system 3.

[0038] The output roller 33 passes through the pressing chamber 8. The layer-breaking material fan 2, pressure roller 5 and pelletizing device 6 are all rotatably installed in the pressing chamber 8 through the output roller 33. The layer-breaking material fan 2, pressure roller 5 and pelletizing device 6 are all keyed to the output roller in the pressing chamber 8. Synchronous movement ensures that each actuator works in coordination to guide, press and pelletize.

[0039] The parts and equipment all use conventional models in the existing technology, and the circuit connections use conventional connection methods in the existing technology, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0040] Working principle: The operator starts the drive motor 101, which makes the output roller 33 the core of power transmission, driving the layer breaking and feeding fan 2, pressure roller 5 and pelletizing device 6 in the pressing chamber 8 to rotate synchronously. The operator feeds the material, and the layer breaking and feeding fan 2 feeds and guides the material entering the pressing chamber 8, so that it is distributed in the pressing direction of the pressure roller 5, which makes it easier for the subsequent pressure roller 5 to fully press and shape the material. After the pressure roller 5 presses the material to the required shape and density, the pelletizing device 6 cuts the pressed material into pellets in time. The entire production process is continuous and efficient, reducing the time that the material stays between each process.

[0041] When a hard material layer is generated in the pressing chamber 8, the material layer scraper 22 in the layer breaking and feeding fan 2, together with the spiral guide groove on the surface, breaks and deconstructs the hard material layer. Due to gravity, the broken hard material layer falls into the lower feeding fan 23 for further dispersion and guidance, and is then re-pressed.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. In a ring molding machine having a structure for preventing a lump, an improvement wherein: The device includes a support frame (1), a drive motor (101), a pressing chamber (8), and a layer-breaking and material-dispensing fan (2). The support frame (1) is equipped with a drive motor (101), a transmission system (3), and a pressing chamber (8). The pressing chamber (8) is equipped with a layer-breaking and material-dispensing fan (2), a pressure roller (5), and a pelletizing device (6). The drive motor (101) is connected to the transmission system (3) via a synchronous belt. The transmission system (3) is connected to the pressing chamber (8). The layer-breaking and material-dispensing fan (2), the pressure roller (5), and the pelletizing device (6) are installed sequentially from top to bottom in the pressing chamber (8) via the transmission system (3). An annular mold (4) is fixedly installed in the pressing chamber (8). The pressure roller (5) is located inside the annular mold (4).

2. The improvement in a ring molding machine with a structure for preventing a lump according to claim 1, wherein: The layer-breaking material-dispensing fan (2) is located at the feed inlet of the pressing chamber (8), and the layer-breaking material-dispensing fan (2) is in the shape of a frustum.

3. The improvement in a ring molding machine with a structure for preventing a lump according to claim 2, wherein: The layer-breaking material-dispensing fan (2) includes an upper material-dispensing fan (21), a material layer scraper (22) and a lower material-dispensing fan (23). The material layer scraper (22) is located between the upper material-dispensing fan (21) and the lower material-dispensing fan (23). The surface of the material layer scraper (22) is provided with a spiral guide groove.

4. The improvement in a ring molding machine with a lump prevention structure according to claim 1, characterized in that: The transmission system (3) includes an input roller (31), a bevel gear transmission component (32) and an output roller (33). The input roller (31) and the output roller (33) are both mounted on a support frame (1) via bearing support components. The input roller (31) is connected to the output roller (33) via the bevel gear transmission component (32). The drive motor (101) drives the input roller (31).

5. The improved device for a ring die forming machine with an anti-bulging structure according to claim 4, characterized in that: The output roller (33) passes through the pressing chamber (8), and the layer breaking and feeding fan (2), the pressure roller (5) and the pelletizing device (6) are all installed in the pressing chamber (8) through the output roller (33).

6. The improvement in a ring molding machine with a lump prevention structure according to claim 1, characterized in that: The compression chamber (8) is fixedly installed on the support frame (1).

7. The improvement in a ring molding machine with a lump prevention structure according to claim 1, characterized in that: The pelletizing device (6) is equipped with an annular mold (4) via a bearing, and the annular mold (4) is connected to the transmission system (3) via a bearing.

8. The improvement in a ring molding machine with a lump prevention structure according to claim 7, characterized in that: The annular mold (4) is provided with an extension (401), which is mounted on the pelletizing device (6) by a bearing.

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