Anti-caking vibration device at the discharge port of the drying tower

Abstract

This utility model discloses an anti-caking vibration device for the discharge port of a drying tower, including a drying tower discharge port, vibration motors symmetrically arranged on the outside of the discharge port, a support frame for fixing the vibration motors, and a guide seat nested below the discharge port, with a drive motor installed inside the guide seat. In this utility model, multiple vibration motors generate a composite vibration field that covers the entire discharge port area, effectively breaking down the adhesion between material particles and eliminating bridging and rat-hole phenomena. Compared to traditional single-point vibration, the material loosening efficiency is significantly improved by more than 30%, especially suitable for rice particles with a moisture content of 12%-15%, reducing the agglomeration rate from 15% to below 3%. In this utility model, the scraper rotates at low speed with the drive motor, continuously moving in contact with the inner wall of the guide seat, effectively removing adhering material residue in real time. This significantly reduces the amount of residue adhering to the inner wall of the drying tower discharge port, reducing the frequency of volumetric cleaning and improving production continuity.

Description

Technical Field

[0001] This utility model relates to the field of grain processing equipment technology, and in particular to a vibration device for preventing caking at the discharge port of a drying tower. Background Technology

[0002] In the grain processing industry, drying towers are the core equipment for drying rice. The dried grain needs to be discharged through the outlet, but in existing technologies, the problem of outlet blockage is common. The specific reasons are as follows:

[0003] 1. During the drying process of rice, if the moisture content is not controlled evenly or starch gelatinization occurs at high temperature, clumps are easily formed between particles due to surface stickiness. When fine powder impurities accumulate, they can easily form an arching effect, which hinders the flow of materials.

[0004] 2. Some drying towers rely solely on gravity feeding and lack proactive anti-caking measures, resulting in poor performance for highly viscous materials. Existing vibration devices mostly vibrate on one side or at a single point, leading to uneven material distribution and the presence of dead corners. Material adhering to the inner wall of the discharge port is difficult to remove automatically and requires regular manual disassembly and cleaning, resulting in frequent downtime and impacting production efficiency.

[0005] To address these issues, we proposed a vibration device to prevent caking at the discharge port of the drying tower. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vibration device to prevent caking at the discharge port of a drying tower.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a vibration device for preventing caking at the discharge port of a drying tower, comprising a discharge port of the drying tower, a vibration motor symmetrically arranged on the outside of the discharge port of the drying tower, a support frame for fixing the vibration motor, and a guide seat nested below the discharge port of the drying tower. A drive motor is provided inside the guide seat, and a rotating column is fixedly connected to the output end of the drive motor. One end of the rotating column extends into the discharge port of the drying tower and is welded with a connecting rod, and a scraper is fixedly connected to the end of the connecting rod.

[0008] Preferably, the vibrating motor is provided in multiple units, and the multiple vibrating motors are symmetrically distributed at 180°, and the vibration direction of the vibrating motors points to the central axis of the discharge port of the drying tower.

[0009] Preferably, the scraper is in contact with the inner wall of the discharge port of the drying tower.

[0010] Preferably, the scraper is provided in multiple manner, and the multiple scrapers are distributed in a ring array inside the discharge port of the drying tower.

[0011] Preferably, a control switch is provided on the outer wall of the discharge port of the drying tower, and the control switch is electrically connected to the vibration motor and the drive motor through a wire.

[0012] Preferably, the top surface of the flow guide seat is an inclined surface.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses multiple vibrating motors to generate a composite vibration field that can cover the entire area of ​​the discharge port, effectively breaking the adhesion between material particles and eliminating arching and rat hole phenomena. Compared with traditional single-point vibration, the material loosening efficiency is increased by more than 30%, and it is especially suitable for rice particles with a moisture content of 12%-15%, which can reduce the agglomeration rate from 15% to below 3%.

[0015] In this invention, the scraper rotates at low speed with the drive motor and continuously moves in contact with the inner wall of the guide seat, which can remove the adhering material residue in real time. This can significantly reduce the amount of material residue on the inner wall of the drying tower outlet, reduce the frequency of volume cleaning, and improve production continuity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0017] Figure 1 This is a cross-sectional view of the anti-caking vibration device at the discharge port of the drying tower proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the external structure of the anti-caking vibration device at the discharge port of the drying tower proposed in this utility model.

[0019] Figure 3 This is a structural diagram of the drive motor, rotating column, connecting rod, and scraper.

[0020] Legend:

[0021] 1. Drying tower outlet; 2. Vibrating motor; 3. Support frame; 4. Guide seat; 5. Drive motor; 6. Rotating column; 7. Connecting rod; 8. Scraper; 9. Control switch. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Please refer to Figure 1-3 The anti-caking vibration device for the discharge port of the drying tower includes a discharge port 1 of the drying tower, a vibration motor 2 symmetrically arranged on the outside of the discharge port 1, a support frame 3 for fixing the vibration motor 2, and a guide seat 4 nested below the discharge port 1 of the drying tower. A drive motor 5 is installed in the guide seat 4, and a rotating column 6 is fixedly connected to the output end of the drive motor 5. One end of the rotating column 6 extends into the discharge port 1 of the drying tower and is welded to a connecting rod 7. A scraper 8 is fixedly connected to the end of the connecting rod 7. The support frame 3 is made of stainless steel and is fixedly connected to the outer wall of the discharge port 1 of the drying tower by M12 high-strength bolts with a bolt spacing of 150-200mm to ensure effective transmission of vibration energy. A shock-absorbing rubber pad with a Shore hardness of 60-70A is installed between the contact surface of the support frame 3 and the discharge port 1 of the drying tower to reduce the impact of vibration on the main structure of the drying tower and avoid equipment wear caused by rigid connection.

[0025] In this implementation scheme: multiple vibration motors 2 are provided, and the multiple vibration motors 2 are symmetrically distributed at 180°, and the vibration direction of the vibration motors 2 points to the central axis of the discharge port 1 of the drying tower.

[0026] Specifically, the components are distributed at 180° with the central axis of the discharge port 1 of the drying tower as the center of symmetry. For example, two vibration motors 2 can be installed at the discharge port with a diameter ≤500mm, distributed at 90° intervals clockwise, to ensure that the vibration field uniformly covers the entire area of ​​the discharge port.

[0027] In this implementation plan: the scraper 8 is in contact with the inner wall of the discharge port 1 of the drying tower.

[0028] Specifically, the scraper 8 uses a flexible stainless steel frame with food-grade silicone rubber strips wrapped around its edges, 3-5mm thick, which are fixed to the end of the connecting rod 7 with bolts. The silicone rubber strips have elastic deformation capabilities, which can adapt to the slight curvature changes of the inner wall of the discharge port, ensuring that they always fit together, while avoiding wear or material breakage caused by hard friction between the metal scraper 8 and the inner wall.

[0029] In this embodiment, multiple scrapers 8 are provided, and the multiple scrapers 8 are arranged in a ring array inside the discharge port 1 of the drying tower.

[0030] Specifically, the number of scrapers 8 is usually 2-4 pieces, which are evenly distributed along the circumference of the inner wall of the discharge port. When the inner diameter of the discharge port is ≤300mm, 2 scrapers 8 are set, and when the inner diameter is 300-500mm, 3-4 scrapers are set. The included angle between adjacent scrapers 8 is 60°-180° to ensure that there are no dead corners for cleaning during the rotation process.

[0031] In this implementation scheme: a control switch 9 is provided on the outer wall of the discharge port 1 of the drying tower, and the control switch 9 is electrically connected to the vibration motor 2 and the drive motor 5 through wires.

[0032] Specifically, the control switch 9 is integrated into the control cabinet panel of the drying tower and adopts a PLC control system. It has manual / automatic switching function. In manual mode, the vibration motor 2 and drive motor 5 can be started and stopped separately. In automatic mode, they are linked by a preset program. For example, the vibration motor 2 can be automatically switched to reverse direction every 30 minutes of operation, alternating between forward and reverse to avoid material accumulation on one side and extend the service life of the equipment.

[0033] In this implementation scheme: the top surface of the flow guide seat 4 is an inclined surface.

[0034] Specifically, the top surface of the guide seat 4 is designed with an angle of 30°-45° and the surface is polished to reduce the friction coefficient between the material and the guide seat 4. The guide seat 4 is detachably connected to the bottom of the discharge port through a flange. A high-temperature resistant silicone sealing ring is set at the flange interface to prevent hot air leakage inside the drying tower and to facilitate regular disassembly and cleaning of residual materials inside.

[0035] Working principle: When the material in the drying tower enters the discharge port, the operator starts the vibration motor 2 through the control switch 9. Multiple vibration motors 2 are symmetrically distributed at 180°, and their eccentric blocks rotate at high speed to generate circumferential vibration. The vibration direction is towards the central axis of the discharge port, so that the entire discharge port area generates high-frequency micro-amplitude vibration with a frequency of 50-100Hz and an amplitude of 0.5-3mm. The material particles generate relative movement under the action of vibration, which breaks the adhesion between particles formed by stickiness or electrostatic force, eliminates the "arch bridge" and "mouse hole" phenomenon, and makes the material flow downward in a loose state. At the same time, the drive motor 5 drives the connecting rod 7 and scraper 8 to rotate at a low speed of 5-10r / min through the rotating column 6. Multiple scrapers 8 are distributed in a ring array on the inner wall of the discharge port. When the scraper 8 moves in a circle with the rotating column 6, it scrapes the material residue adhering to the wall surface to the central area of ​​the discharge port, mixes with the mainstream material, and is then discharged.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vibration device for preventing agglomeration at the discharge port of a drying tower, comprising a discharge port (1) of the drying tower, characterized in that: It also includes a vibrating motor (2) symmetrically arranged outside the outlet (1) of the drying tower, a support frame (3) for fixing the vibrating motor (2), and a guide seat (4) nested below the outlet (1) of the drying tower. A drive motor (5) is provided in the guide seat (4), and a rotating column (6) is fixedly connected to the output end of the drive motor (5). One end of the rotating column (6) extends into the outlet (1) of the drying tower and is welded with a connecting rod (7). A scraper (8) is fixedly connected to the end of the connecting rod (7).

2. The anti-caking vibration device at the discharge port of the drying tower according to claim 1, characterized in that: The vibration motor (2) is provided in multiple units, and the multiple vibration motors (2) are symmetrically distributed at 180°, and the vibration direction of the vibration motor (2) points to the central axis of the discharge port (1) of the drying tower.

3. The anti-caking vibration device at the discharge port of the drying tower according to claim 1, characterized in that: The scraper (8) is attached to the inner wall of the discharge port (1) of the drying tower.

4. The anti-caking vibration device at the discharge port of the drying tower according to claim 1, characterized in that: The scraper (8) is provided in multiple ways, and the multiple scrapers (8) are arranged in a ring array inside the discharge port (1) of the drying tower.

5. The anti-caking vibration device at the discharge port of the drying tower according to claim 1, characterized in that: The outer wall of the discharge port (1) of the drying tower is provided with a control switch (9), and the control switch (9) is electrically connected to the vibration motor (2) and the drive motor (5) through wires.

6. The anti-caking vibration device at the discharge port of the drying tower according to claim 1, characterized in that: The top surface of the flow guide seat (4) is an inclined surface.

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