A wet material bin device for preventing bridging
By designing an anti-bridging auger and conveying auger with inclined sides and reverse transmission in the wet material silo, combined with an exhaust port, the problem of material bridging in the wet material silo is solved, achieving efficient conveying and hygienic safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江上方生物科技有限公司
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-04
AI Technical Summary
Existing wet material silos are prone to bridging when conveying materials with high moisture content, high viscosity, or easy agglomeration, which leads to reduced conveying efficiency and increased risk of microbial contamination, failing to meet the hygiene and safety requirements of the food and pharmaceutical industries.
Design a wet material silo device to prevent bridging. The device uses anti-bridging augers on the inclined side and inside that are parallel to the conveying augers, with opposite spiral directions. By combining reasonable auger positions and pitches, the bridging structure of the material is destroyed through reverse transmission. It is also equipped with an exhaust port to discharge gas and prevent air pressure from affecting the material.
It significantly prevents material bridging, improves conveying efficiency, reduces the risk of microbial growth, and ensures production continuity and product quality and safety.
Smart Images

Figure CN224589813U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material storage and conveying equipment technology, specifically a wet material silo device to prevent bridging. Background Technology
[0002] Wet material silos are key equipment for the temporary storage and transportation of materials, and are widely used in various industries such as food, chemical, pharmaceutical, and environmental protection. Their core function is to facilitate the transfer and processing of materials with high moisture content, high viscosity, or a tendency to clump. In the production process of colloids such as carrageenan, gellan gum, and xanthan gum, their alcohol precipitates are cotton-like and have a high moisture content. When these materials are transported in traditional wet material silos, they are prone to "bridging" (i.e., the material is suspended in the air inside the silo and cannot fall normally) due to their high viscosity and poor flowability.
[0003] The "bridging" phenomenon not only leads to a significant reduction in material conveying efficiency and affects production continuity, but more seriously, the long-term accumulation of materials can breed microorganisms due to poor ventilation and suitable humidity, significantly increasing the risk of microbial contamination of materials and threatening the quality and safety of downstream products, thus failing to meet the strict hygiene and safety requirements of industries such as food and pharmaceuticals. Existing wet material silos generally have unreasonable structural designs and lack targeted anti-bridging mechanisms, making it difficult to effectively solve the above-mentioned problem of conveying high-moisture, cotton-like materials. Utility Model Content
[0004] The main objective of this invention is to provide a wet material silo device that prevents bridging, thereby solving the aforementioned technical problems.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a wet material silo device for preventing bridging, comprising a wet material silo body, wherein the wet material silo body is hollow and has an inlet, an outlet, and a discharge outlet. The sides of the wet material silo body are inclined, with the angle between the inclined side and the vertical plane being 150°. Inside the wet material silo body, there are two anti-bridging augers and two conveying augers. The two anti-bridging augers are respectively installed on the inner sides of the two inclined sides of the silo, and the two conveying augers are installed on the inner bottom of the wet material silo body. A drive motor is installed at one end of all the augers, and the anti-bridging augers and the conveying augers are parallel to each other and have a gap.
[0006] Based on the above scheme and as a preferred embodiment: the axis of the conveying auger is 140mm from the bottom of the wet material silo, the axis of the anti-bridging auger is 380mm perpendicular to the axis of the conveying auger, and the axis of the anti-bridging auger is 280mm from the top of the wet material silo; the total width of the wet material silo is 1600mm, the horizontal distance between the axes of the two anti-bridging augers is 887.52mm, the horizontal distance between the axes of the two conveying augers is 350mm, and the four augers are horizontally symmetrically distributed inside the wet material silo.
[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the spiral pushing direction of the anti-bridging auger is towards the feed inlet, and the spiral pushing direction of the conveying auger is towards the discharge outlet; the pitch of both the anti-bridging auger and the conveying auger is 180mm, and the height of all augers is half of the pitch.
[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the feed inlet is located at the top of the wet material silo and close to the drive motor, and the horizontal direction of the feed inlet axis is perpendicular to the wet material silo.
[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the discharge port is located at the bottom of the wet material silo, the horizontal axis of the discharge port is parallel to the wet material silo, and the discharge port is set in the middle of the two conveying screws.
[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the exhaust port is located near the feed port and on the side away from the drive motor.
[0011] Based on the above scheme and as a preferred embodiment of the above scheme: the wet material silo has a total length of 3200mm and a total height of 800mm.
[0012] The beneficial effects of this utility model are as follows: This device has a significant anti-bridging effect. By cooperating with the conveying auger through reverse transmission, and combining the reasonable auger position, pitch and side tilt angle of the hopper, the bridging conditions of the material are destroyed from multiple dimensions, effectively solving the bridging and clogging problem of high moisture cotton-like materials. Attached Figure Description
[0013] Figure 1 This is a front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a top view of the interior of the wet material silo of this utility model. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.
[0015] See attached diagram. Figures 1 to 3 This embodiment of a wet material silo device for preventing bridging includes a wet material silo body 1, which is hollow and has an inlet 11, an exhaust port 13, and an outlet 12. The side of the wet material silo body 1 is inclined, and the angle between the inclined side and the vertical plane is 150°. The wet material silo body 1 is equipped with two anti-bridging augers 2 and two conveying augers 3. A drive motor 4 is installed at one end of all the augers, and the anti-bridging augers 2 and the conveying augers 3 are parallel to each other and have a gap.
[0016] The feed inlet 11 is located at the top of the wet material silo 1, close to the auger motor. Its axis is perpendicular to the wet material silo 1 in the horizontal direction. The feed inlet 11 has a diameter of 300mm and is 300mm away from the side wall of the silo in the horizontal direction, which facilitates the uniform falling of materials into the wet material silo 1 and avoids local accumulation. The discharge port 12 is located at the bottom of the wet material silo 1, with its axis parallel to the wet material silo in the horizontal direction, and is positioned in the middle of the two conveying augers 3 to ensure that the material conveyed by the two conveying augers 3 can be concentrated at the discharge port 12, reducing material residue at the bottom. The exhaust port 13 is located near the feed inlet 11 and on the side away from the auger motor. Its horizontal distance from the feed inlet 11 is 200-400mm. It can promptly discharge the gas carried by the material when it enters the wet material silo 1, avoid excessive air pressure in the silo affecting the material falling, and reduce the risk of microbial growth caused by gas retention in the material.
[0017] Furthermore, the side of the wet material silo 1 is inclined, and the angle between the inclined side and the vertical plane is 150°. This inclination angle can prevent the material from being squeezed and accumulated on the side of the silo wall, thus reducing the risk of bridging from a structural perspective. Furthermore, two anti-bridging augers 2 are installed on the inner sides of the inclined sides of the wet material silo 1, and two conveying augers 3 are installed in parallel at the bottom of the wet material silo 1; all augers are equipped with drive motors 4, and the anti-bridging augers 2 and the conveying augers 3 are parallel to each other, with a small gap between them to avoid mutual interference during operation.
[0018] Specifically, the conveying auger 3 is located near the bottom of the wet material silo 1, with its axis 140mm from the bottom of the wet material silo 1; the anti-bridging auger 2 is located near the top of the wet material silo 1, with its axis 380mm from the axis of the conveying auger 3 and 280mm from the top of the wet material silo 1, so that the four augers are evenly distributed in height within the wet material silo 1, ensuring coverage of materials at different heights.
[0019] Preferably, the wet material silo 1 has a total width of 1600mm, a total height of 800mm, and a total length of 3200mm. The horizontal distance between the axes of the two anti-bridging augers 2 is 887.52mm, and the horizontal distance between the axes of the two conveying augers 3 is 350mm. The horizontal distance between the anti-bridging auger 2 and the adjacent conveying auger 3 is less than the horizontal distance between the two conveying augers 3. The four augers are symmetrically distributed in the horizontal direction inside the wet material silo 1, which not only ensures the material conveying range of the conveying augers 3, but also enables the anti-bridging augers 2 to act precisely on the areas prone to bridging.
[0020] In a further preferred embodiment, the spiral pushing direction of the anti-bridging auger 2 faces the inlet 11, and the spiral pushing direction of the conveying auger 3 faces the outlet 12. The two pushing directions are opposite, and the material bridging structure is destroyed through reverse transmission. The pitch of all augers is 180mm, and the auger height is half of the pitch. This size design can balance the material conveying efficiency and the anti-bridging effect, avoiding material residue due to excessive pitch and increased conveying resistance due to insufficient pitch.
[0021] The working principle is as follows: After the material enters the wet material silo 1 through the feed inlet 11, all auger motors are turned on: The conveying auger 3 is driven in the direction toward the discharge port 11, conveying the material toward the discharge port 11; If a bridge forms in the middle or bottom of the wet material bin 1 during the flow of material to the discharge port 11, the anti-bridging auger 2 will reverse the transmission in the direction towards the feed port 12, pushing the bridged material towards the feed port 11, causing the bridged structure to break, and the broken material will fall back into the action range of the conveying auger 3. At the same time, exhaust port 13 continuously discharges gas from the chamber to prevent air pressure from hindering the material from falling. Finally, the material is stably conveyed to the discharge port 12 under the action of the conveying auger 3, completing the temporary storage and conveying process.
[0022] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. A wet material silo device for preventing bridging, comprising a wet material silo body (1), wherein the wet material silo body (1) is hollow and has an inlet (11), an outlet (13) and an outlet (12) on the wet material silo body (1), characterized in that: The side of the wet material silo (1) is inclined, and the angle between the inclined side and the vertical plane is 150°. The wet material silo (1) is equipped with two anti-bridging augers (2) and two conveying augers (3). The two anti-bridging augers (2) are installed on the inner side of the two inclined sides of the silo, and the two conveying augers (3) are installed on the inner side of the bottom of the wet material silo (1). All augers are equipped with a drive motor (4) at one end, and the anti-bridging augers (2) and the conveying augers (3) are parallel to each other and have a gap.
2. The wet material silo device for preventing bridging according to claim 1, characterized in that: The axis of the conveying auger (3) is 140mm from the bottom of the wet material silo (1), the axis of the anti-bridging auger (2) is 380mm from the axis of the conveying auger (3), and the axis of the anti-bridging auger (2) is 280mm from the top of the wet material silo (1); the wet material silo (1) has a total width of 1600mm, the horizontal distance between the axes of the two anti-bridging augers (2) is 887.52mm, the horizontal distance between the axes of the two conveying augers (3) is 350mm, and the four augers are horizontally symmetrically distributed inside the wet material silo (1).
3. The wet material silo device for preventing bridging according to claim 1, characterized in that: The anti-bridging auger (2) has its spiral pushing direction facing the feed inlet (11), and the conveying auger (3) has its spiral pushing direction facing the discharge outlet (12); the pitch of both the anti-bridging auger (2) and the conveying auger (3) is 180mm, and the height of all augers is half of the pitch.
4. The wet material silo device for preventing bridging according to claim 1, characterized in that: The feed inlet (11) is located at the top of the wet material silo (1) and close to the drive motor (4). The horizontal direction of the feed inlet (11) axis is perpendicular to the wet material silo (1).
5. A wet material silo device for preventing bridging according to claim 1, characterized in that: The discharge port (12) is located at the bottom of the wet material silo (1), the horizontal direction of the discharge port (12) is parallel to the wet material silo (1), and the discharge port (12) is set in the middle of the two conveying screws (3).
6. A wet material silo device for preventing bridging according to claim 1, characterized in that: The exhaust port (13) is located near the feed port (11) and on the side away from the drive motor (4).
7. A wet material silo device for preventing bridging according to claim 1, characterized in that: The wet material silo (1) has a total length of 3200mm and a total height of 800mm.