A raw material distribution bin

Abstract

The utility model relates to material distribution structure design technical field discloses a raw material distribution bin, including bin body, driving part, rotation axis and pusher, bin body bottom is provided with a plurality of discharge gates, and bin body bottom plane is provided, driving part is connected with pusher through rotation axis, and the middle part of bin bottom is fixedly connected with the raised block, the cross section of raised block is arc, and the bottom edge of raised block is connected with each discharge gate edge, and pusher includes integrally formed paddle seat and a plurality of paddles, paddle seat is installed in rotation axis end, each paddle is fixedly connected in the outer periphery of paddle seat and is inclined, the bottom of paddle forms arc portion and taper portion, arc portion is matched with the outer surface of raised block, is used for scraping and sweeping the material on raised block, taper portion is matched with bin body inner wall, is used for pushing the material on bin bottom. The utility model promotes the flowability of bin body inner material through the push of paddle to the material on bin bottom and raised block, effectively reduces the residue and adhesion of material on the bottom of paddle seat.

Description

Technical Field

[0001] This utility model relates to the field of material distribution structure design technology, specifically to a raw material distribution silo. Background Technology

[0002] In modern industrial production processes, material distribution silos are a key piece of equipment widely used in numerous fields such as powder industry and agricultural feed production. Their main function is to receive, store, and discharge powdered raw materials according to formulas, ensuring continuous and stable production. A material distribution silo system typically comprises multiple parts, including the silo body, feeding / dispensing devices, arch-breaking devices, level gauges, distributors, screw conveyors, and a control system. Depending on actual production needs and site planning, material distribution silos have various structural forms and layout schemes, such as the common stacking silo scheme and tower silo scheme, each with different characteristics in terms of flexibility, floor space, and conveying costs.

[0003] The raw material distribution silo purchased by the applicant has a common structural form, namely a flat bottom with multiple discharge ports for unloading. To achieve efficient material delivery, an agitator shaft is installed inside the silo. The agitator shaft is connected to the bottom of the silo via a bearing with a mounting seat. A drive unit provides power to rotate the agitator shaft. Blades are connected to the outer circumference of the agitator shaft, which push the material to the discharge ports.

[0004] However, when this material distribution bin is used to process powdered materials, serious defects have been exposed. Due to the fine particle size and high fluidity of powdered materials, they easily enter the bearing housing through various gaps or the connection between the rotating shaft and the bearing during material conveying and mixing. The intrusion of large amounts of powder disrupts the original lubrication environment inside the bearing, exacerbates wear between components, and leads to premature bearing failure. Once the bearing fails, the rotation of the rotating shaft is hindered, causing jamming and preventing the material distribution bin from operating normally. To maintain smooth machine operation, frequent shutdowns are necessary to replace or clean the bearing housing. This not only consumes significant manpower and material resources but also severely impacts production efficiency, increases production costs, and the frequent start-ups and shutdowns may adversely affect the stability of the entire production system. Utility Model Content

[0005] The present invention aims to provide a raw material distribution bin to solve the technical problem that when processing powdered materials, the powdered materials in the existing material distribution bins can easily enter the bearing housing or the connection between the rotating shaft and the bearing, resulting in bearing damage, rotating shaft jamming, and frequent shutdowns to replace or clean the bearing housing, which affects production efficiency and increases costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A raw material distribution silo includes a silo body, a drive unit, a rotating shaft, and a pusher. The inner wall of the silo body is conical, with multiple discharge ports evenly distributed at the bottom of the conical shape. The bottom of the silo body is planar. The drive unit is installed at the top of the silo body. One end of the rotating shaft is connected to the drive unit, and the other end passes through the silo body and is connected to the pusher. The silo body is characterized by a raised block fixedly connected to the center of the bottom, the raised block having an arc-shaped cross-section, and the bottom edge of the raised block connecting to the edges of each discharge port. The pusher includes an integrally formed blade seat and multiple blades. The blade seat is installed at the end of the rotating shaft, and each blade is obliquely fixedly connected to the outer periphery of the blade seat. The bottom of each blade has an arc-shaped portion and a conical portion. The arc-shaped portion is adapted to the outer surface of the raised block for scraping material on the raised block; the conical portion is adapted to the inner wall of the silo body for pushing material on the bottom of the silo.

[0007] Beneficial effects: 1. By eliminating the mounted bearing, the possibility of materials entering the mounted bearing and the connection between the rotating shaft and the bearing is reduced from the source, ensuring that the equipment can operate stably for a long time, avoiding production interruptions caused by frequent downtime for maintenance, and significantly improving production efficiency.

[0008] 2. The elimination of the bearing seat simplifies the transmission chain. The blade seat is directly connected to the end of the rotating shaft, and the blade is fixedly connected to the blade seat. When the rotating shaft rotates, it can directly drive the blade seat to rotate, so that the blade can push the material. The elimination of the bearing seat simplifies the structure, thereby reducing the number of failure points in the device, improving the reliability and life of the overall transmission system, and reducing the number of maintenance points of the device.

[0009] 3. The bottom of the paddle has an arc-shaped section and a conical section. The conical section is adapted to the inner wall of the bin to push the material on the bottom of the bin. The arc-shaped section is adapted to the outer surface of the lifting block to scrape and push the material on the lifting block, avoiding the accumulation of material between the lifting block and the paddle seat, which can easily cause the paddle seat to rotate and get stuck. This achieves full coverage of the entire horizontal projection surface of the bin bottom, truly achieving cleaning without dead corners. This not only improves production efficiency but also greatly facilitates cleaning work and equipment maintenance during material changes. In addition, the arc-shaped design of the lifting block can also reduce the accumulation of material, which can lead to the formation of waste material in the bin and contamination of subsequent materials.

[0010] 4. As a simple fixed structure, the lifting block is easy to manufacture and install without requiring major changes to the main structure and manufacturing of the existing silo. However, this low-cost additional component, in conjunction with the redesigned blades, plays a key role. By pushing the material at the bottom of the silo and the material on the raised ramp, the blades effectively reduce the residue and accumulation of material at the bottom of the blade seat, thereby improving the flowability of the material in the silo.

[0011] Before determining this solution, the original rotating shaft was connected to the bottom of the silo via a bearing. However, the bearing was large, and since the processed material was powdery, it easily entered the bearing, damaging the lubrication inside and causing accelerated bearing wear. This necessitated frequent equipment shutdowns for replacement and cleaning. Therefore, the inventor eliminated the use of the bearing and connected the end of the rotating shaft to the blade seat, preventing material from entering the bearing at the source and ensuring stable equipment operation. However, during production, it was found that material easily accumulated in the bottom area of ​​the blade seat, causing the blade seat to rotate unevenly. Therefore, the inventor raised the bottom of the silo at the bottom of the blade seat. To avoid a dead angle between the raised block and the silo bottom, the raised block was designed as an arc, with the bottom edge of the raised block aligned with the edge of the discharge port. Furthermore, to prevent material from accumulating on the inclined surface and entering between the blade seat and the raised block, the inventor designed the raised block as an arc.

[0012] Preferably, as a further improvement, the blade tilt angle is 30°-60°.

[0013] Beneficial effects: The tilt angle of the blade is (30-60)°. This angle range is the optimal angle range for pushing powdered materials. When the angle is less than 30°, the contact area between the blade and the material decreases, making it impossible for the blade to effectively push the material. Moreover, when the stirring speed is too high, the material is prone to splashing, which not only reduces the pushing efficiency but may also cause blockage of the discharge port. When the angle is greater than 60°, the contact area between the blade and the material increases, and the material can generate greater resistance to the blade, resulting in insufficient pushing force of the blade on the material, which can easily cause the material to stagnate and accumulate at the bottom of the bin.

[0014] Preferably, as a further improvement, multiple stirring sections are fixedly connected to the middle of the blade.

[0015] Beneficial effects: When the rotating shaft drives the paddle to rotate, the paddle can drive the stirring part to rotate, and secondary stirring is carried out simultaneously during the material pushing process, which further improves the mixing uniformity of the material; and the paddle mainly acts near the bin wall, while the stirring part covers the central area around the rotating shaft, so that the stirring part continuously cuts the material during rotation, destroys the adsorption force between powders, and avoids material agglomeration.

[0016] Preferably, as a further improvement, a reinforcing rib is provided between the blade and the blade seat.

[0017] Beneficial effects: The reinforcing ribs, which are vertically connected to the blade root and blade seat in a triangular or ribbed structure, can effectively distribute the radial torque and axial bending moment borne by the blade during the mixing process to the entire blade seat, significantly reducing stress concentration. This can prevent fatigue fracture at the blade root due to excessive local load, which not only greatly improves the connection strength and structural rigidity between the blade and blade seat, but also extends the service life of the entire mixing assembly.

[0018] Preferably, as a further improvement, the top of the silo is provided with a feed inlet and a tail powder recovery inlet, the tail powder recovery inlet being used to collect the tail powder screened out by the vibrating screen.

[0019] Beneficial effects: By recycling the tailings screened by the vibrating screen and returning them to the silo, the tailings are avoided from being directly discarded, reducing raw material waste and lowering production costs. Furthermore, there is no need to set up an additional independent tailings collection device, as the recycling port is integrated into the top of the silo, simplifying equipment layout, reducing material transfer links, and improving production efficiency. Secondly, centralized recycling of tailings can prevent them from scattering in the workshop, reducing dust pollution and minimizing the impact of dust on equipment and operators, thus meeting environmental protection and safety requirements.

[0020] Preferably, as a further improvement, the diameter of the feed inlet is larger than that of the discharge outlet.

[0021] Beneficial effects: The design of a large inlet and a small outlet can create a material flow rhythm of wide inlet and narrow outlet within the silo. This not only allows sufficient material residence and reaction time for processes such as stirring and mixing within the silo, but also ensures that the material in the silo is always within a reasonable inventory range through a controllable discharge speed, avoiding the problem of frequent equipment start-ups and shutdowns caused by empty or full silos. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the blade in Embodiment 1 of this utility model.

[0023] Figure 2 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0024] Figure 3 This is a schematic diagram of the discharge port in Embodiment 1 of this utility model.

[0025] Figure 4 This is a schematic diagram of the pusher component in Embodiment 1 of this utility model.

[0026] The reference numerals in the accompanying drawings include: 1. bin body, 11. discharge port, 12. feed port, 13. tail powder recovery port, 14. observation window, 15. lifting block, 2. drive component, 3. rotating shaft, 4. blade seat, blade, 5. stirring part, 6. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method: Example 1 like Figures 1-4As shown, this embodiment provides a raw material distribution bin, including a bin body 1. The top of the bin body 1 is provided with a feed inlet 12 and a tail powder recovery inlet 13. The feed inlet 12 is connected to a mixer for mixing raw materials, and the tail powder recovery inlet 13 is connected to a vacuum tank via a blower. The vacuum tank is used to collect tail powder screened by a vibrating screen. This distribution bin is mainly used for secondary mixing of the mixed raw materials and distributing the mixed material to a granulator. Since the bottom of the distribution bin purchased by the applicant is flat and the bottom of the inner wall of the bin body 1 is conical, multiple discharge ports 11 are provided at the conical bottom, specifically four discharge ports 11, and each discharge port 11 is evenly distributed at the bottom of the bin body 1. Each discharge port 11 is connected to a granulator to improve the granulation speed.

[0028] Furthermore, to prevent the material output from the feed inlet 12 from flowing directly out of the discharge outlet 11 below, causing the rest of the granulators to idle, the diameter of the feed inlet 12 is larger than the diameter of the discharge outlet 11, and the discharge outlet 11 is specifically semi-circular, so as to control the feeding speed of the material entering the discharge outlet 11.

[0029] To push the material at the bottom of the hopper 1 to the discharge port 11, this embodiment also includes a drive component 2, a rotating shaft 3, and a pusher. The drive component 2 is installed on the top of the hopper 1, and it uses a combination of a motor and a GKAF reducer to prevent the material from failing to enter the discharge port 11 in time due to excessive rotation speed. One end of the rotating shaft 3 is connected to the drive component 2, and the other end passes through the hopper 1 and is connected to the pusher. Specifically, as shown... Figure 1 As shown, a lifting block 15 is fixedly connected to the middle of the bottom of the bin. The lifting block 15 is arc-shaped, and the bottom edge of the lifting block 15 is connected to the edge of each discharge port 11. Since the bottom of the inner wall of the bin body 1 is conical, the cross-section of the accommodating space between the lifting block 15 and the bin wall is V-shaped, so that the material can fall to the discharge port. The pushing component includes an integrally formed blade seat 4 and multiple blades 5. The blade seat 4 is installed at the end of the rotating shaft 3. Each blade 5 is inclinedly welded to the outer periphery of the blade seat 4. An arc portion 51 is formed on the side of the bottom of the blade 5 near the blade seat 4, and a conical portion 52 is formed on the side away from the blade seat 4. The arc portion 51 is adapted to the outer surface of the lifting block 15 and is used to scrape the material on the lifting block 15. The conical portion 52 is adapted to the inner wall of the bin body 1 and is used to push the material on the bottom of the bin. Preferably, the tilt angle of the blade 5 is in the range of 30°-60°, while in this embodiment the tilt angle of the blade 5 is 40°. This avoids the situation where the tilt angle is too small, making it impossible to push the material; while an excessively large tilt angle will increase the resistance of the material to the blade 5, making the blade 5 prone to breakage, and also increasing the load on the motor. To avoid stress concentration between the blade 5 and the blade holder 4, reinforcing ribs are welded at the connection between the blade 5 and the blade holder 4.

[0030] In order for the blades 5 to push the material on the inner wall of the bin 1, the bottom of each blade 5 and the end away from the blade seat 4 are adapted to the inner wall of the bin 1.

[0031] In order to mix the material near the middle of the silo 1, in this embodiment, multiple stirring parts 6 are welded to the middle of the blade 5 so that when the rotating shaft 3 drives the blade 5 to rotate, the stirring parts 6 can stir the material in the middle of the silo 1.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A raw material distribution hopper, comprising a hopper body, a drive unit, a rotating shaft, and a pushing unit, wherein the inner wall of the hopper body is conical, and a plurality of discharge ports are provided at the bottom of the conical shape, the discharge ports being evenly distributed at the bottom of the hopper body, and the bottom of the hopper body being planar; the drive unit is installed at the top of the hopper body, one end of the rotating shaft is connected to the drive unit, and the other end passes through the hopper body and is connected to the pushing unit, characterized in that: A lifting block is fixedly connected to the middle of the bottom of the silo. The lifting block has an arc-shaped cross-section, and the bottom edge of the lifting block is connected to the edge of each discharge port. The pushing component includes an integrally formed blade seat and multiple blades. The blade seat is installed at the end of the rotating shaft, and each blade is inclined and fixedly connected to the outer periphery of the blade seat. The bottom of the blade has an arc-shaped part and a conical part. The arc-shaped part is adapted to the outer surface of the lifting block and is used to scrape the material on the lifting block. The conical part is adapted to the inner wall of the silo and is used to push the material on the bottom of the silo.

2. The raw material distribution silo according to claim 1, characterized in that: The blade tilt angle is 30°-60°.

3. The raw material distribution silo according to claim 1, characterized in that: Multiple stirring sections are fixedly connected to the middle of the blade.

4. The raw material distribution silo according to claim 1, characterized in that: A reinforcing rib is provided between the blade and the blade seat.

5. A raw material distribution silo according to claim 1, characterized in that: The top of the silo is equipped with a feed inlet and a tail powder recovery inlet, which is used to collect the tail powder screened out by the vibrating screen.

6. A raw material distribution silo according to claim 5, characterized in that: The diameter of the feed inlet is larger than that of the discharge outlet.

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