Self-unloading device for unpowered cement silo powder flow

Abstract

This utility model relates to the field of cement silo unloading technology, specifically to a non-powered powder flow self-unloading device for cement silos. It includes a support frame installed at the cement silo outlet, the support frame comprising multiple vertically upward-arranged support rods, a unloading chamber between the support rods, a support block at the top of each support rod, and a vibrating rod below the support block for striking the support rod, promoting smooth material flow. The vacuum area formed inside the unloading chamber is filled by continuously collapsing material, ensuring continuous unloading. This not only improves unloading efficiency but also reduces the safety risks and environmental impacts associated with silo cleaning.

Description

Technical Field

[0001] This utility model relates to the field of cement silo unloading technology, specifically to a cement silo non-powered powder flow self-unloading device. Background Technology

[0002] In the cement production process, both finished and semi-finished cement products require homogenization and storage in drum-shaped homogenization silos. However, due to environmental factors and material characteristics, materials are prone to agglomeration, wall adhesion, collapse, and space occupation during the process. This not only severely restricts production but also poses significant safety risks and environmental impacts during silo cleaning. This is especially true in large cement storage silos, where the large volume and height make them susceptible to temperature, humidity, and material stacking pressure. Prolonged unloading can lead to the formation of stubborn scale layers on the silo walls. Traditional vibration-based silo cleaning methods not only pose safety hazards such as falls from heights and dust asphyxiation but also... The process of cleaning cement silos can cause deformation and damage, and the release of cement dust can cause significant environmental pollution. A single operation can take 15-40 days and frequently interrupt production. Mechanical cleaning equipment has drawbacks such as high energy consumption, high maintenance costs, and many blind spots. The existing method is to set a conical powder flow pump at the discharge port to prevent the formation of a vacuum area at the bottom of the cement silo. Therefore, effectively ensuring that all materials are discharged evenly, avoiding dead zones, reducing cement adhesion, reducing the risks of cleaning, and lowering cleaning costs are key issues that need to be addressed in cement production. Therefore, this technical solution is proposed for improvement. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies where cement silos are prone to jamming during unloading, which affects production, and to provide a self-unloading device for cement silos without power flow.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a cement silo non-powered powder flow self-unloading device, comprising a support frame installed at the outlet of the cement silo, the support frame comprising multiple vertically upward-arranged support rods, a discharge chamber provided between the support rods, a support block provided at the top of the support rods, and a vibrating rod for striking the support rods provided below the support block.

[0005] Furthermore, the bottom of the oscillating rod is disposed on the inner side wall of the support rod, and the top of the oscillating rod is provided with a gravity ball head.

[0006] Furthermore, at least four support rods are provided, and multiple support rings are provided between the support rods, with the support rings being equidistant along the length direction of the support rods.

[0007] Furthermore, the top of the support block is provided with an arc-shaped head, and the lower part of the support block is provided with multiple reinforcing rods.

[0008] Furthermore, the lower part of the support rod is provided with multiple connecting plates, and the sides of the connecting plates are provided with reinforcing rods.

[0009] The beneficial effects of this utility model embodiment are as follows: the support block is provided with at least four unloading chambers formed between them, and the support ring divides the unloading chambers into multiple inlets. If a vacuum area is formed in a certain area inside the unloading chamber, under the action of the support rod and the support ring, the material in the silo will naturally stratify and descend vertically without shrinkage. Then, at the corresponding level, it will be pushed by gravity due to the drop and turn 90 degrees to become a horizontal centripetal converging motion, which greatly reduces the three-dimensional shrinkage degree SKG and the arch coefficient K of each inlet, thereby reducing the shrinkage arch resistance F. The vibrating rod will occasionally swing and strike the support rod, generating a small vibration. This vibration will break the balance of the material between the support rod and the unloading chamber, reduce adhesion, promote the smooth flow of the material, realize unpowered unloading, solve the problem of cement silo wall adhesion, improve silo capacity efficiency, reduce safety accidents caused by cement blockage and leakage, protect the life safety of workers and the property safety of enterprises, and reduce environmental pollution. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support rod in this utility model; In the diagram: 1. Support rod; 101. Support block; 102. Arc-shaped head; 2. Support ring; 3. Vibration rod; 301. Ball head; 4. Reinforcing rod; 5. Connecting plate. Detailed Implementation

[0011] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0012] See Figures 1 to 2 This utility model discloses a cement silo non-powered powder flow self-unloading device, which is mainly composed of a support frame set at the discharge port of the cement silo. The support frame, as the basic support structure of the entire device, is set inside the cement silo. Generally, it is set in the middle of the cement silo to facilitate unloading. The support frame includes multiple vertically upward support rods 1. These support rods 1 not only provide the necessary support force for the device, but also promote the smooth flow of materials through the position structure.

[0013] A support block 101 is provided at the top of the support rod 1. The function of the support block 101 is to disperse the impact force when the material falls and guide the material to be evenly distributed. The support block 101 has at least four discharge chambers formed between them. The top of the support block 101 is provided with an arc-shaped head 102, which not only reduces the accumulation of material at the top of the support block 101, but also guides the material to slide smoothly through the arc surface. The lower part of the support block 101 is provided with multiple reinforcing rods 4. The bottom of the support rod 1 is connected to the inner wall of the cement silo, which further enhances the structural strength of the support block 101.

[0014] To further optimize the unloading effect, a vibrating rod 3 is specially installed below the support block 101 to strike the support rod 1. Utilizing the natural movement of the material during unloading, as the material continuously collapses from the cement silo into the unloading chamber, the impact force generated by its fall causes the vibrating rod 3 to swing or vibrate slightly, thus striking the support rod 1 and generating a slight vibration. Although this vibration is weak, it is sufficient to disrupt the balance between materials, reducing agglomeration and wall adhesion, thereby ensuring the continuity and stability of the unloading process. The bottom of the vibrating rod 3 is located on the inner wall of the support rod 1, ensuring a tight connection and effective transmission between them. The top of the vibrating rod 3 is equipped with a gravity ball head 301. The vibrating rod 3 is tilted, making it difficult for the vibrating rod 3 to remain stable under material stress. The flowing cement causes it to vibrate, ensuring stability during material discharge, reducing material jamming, and improving the overall performance.

[0015] To enhance the overall stability of the support frame, multiple support rings 2 are provided between the support rods 1. These support rings 2 are equidistant along the length of the support rods 1, effectively dispersing the stress borne by the support rods 1 and preventing the support rods 1 from bending or deforming. Multiple connecting plates 5 are provided on the lower side of the support rods 1. The reinforcing rods 4 provided on the side of the connecting plates 5 improve the stability of the entire support frame, so that the support frame can remain stable when subjected to the impact force generated by falling materials and is not prone to shaking or tilting.

[0016] In practical applications, when the cement silo begins unloading, the material continuously collapses from the top of the silo into the unloading chamber. Due to the impact and gravity of the falling material, the support ring 2 divides the unloading chamber into multiple inlets. If a vacuum zone forms in a certain area inside the unloading chamber, under the action of the support rod 1 and the support ring 2, the material in the silo naturally stratifies and descends vertically without shrinkage in parallel layers. Then, at the corresponding level, it is pushed by gravity due to the drop and turns 90 degrees to become a horizontal centripetal converging motion, significantly reducing the three-dimensional shrinkage degree SKG and the arch coefficient K of each inlet, thereby reducing the shrinkage arch resistance F_arch. During operation, the weight of the material in the unloading chamber generates a downward vacuum suction force F_suction, which, together with the vertical gravity of the material at the outside of the cone and the squeezing force F_weight, works together. When (F_weight + F_suction) > F_arch, the shrinkage arch is broken, resulting in continuous feed flow. The vibrating rod 3 will occasionally swing and strike the support rod 1, generating slight vibrations. These vibrations will disrupt the balance between the material and the unloading chamber, reducing adhesion and promoting smooth material flow. The vacuum area formed inside the unloading chamber is filled by continuously collapsing material, ensuring the continuity of unloading. Through this process, not only is the unloading efficiency improved, but the safety risks and environmental impacts of silo cleaning are also reduced, providing a strong guarantee for the continuous and stable operation of cement production.

[0017] When secondary arching due to uneven material accumulation occurs in the middle and high parts of the cement silo due to unfavorable factors, causing significant disturbances such as changes in the hardness distribution of the material flow and affecting the resistance of the Taiji cone's inlet shrinkage arch, the system uses real-time computer detection and calculation based on the relationship between flow rate and drive speed. It then automatically intervenes by adding pulsed compressed air to the bottom of the cone to remove the hard material arch and restore overall flow. For smaller fluctuations in hardness, changes in silo position, and hardness changes caused by pauses, quantitative adaptive control is achieved through PID drive speed adjustment, forming a closed-loop system. This enables airless and powerless overall flow closed-loop quantitative unloading control, ensuring optimal performance. By modifying the cement silo to achieve powerless unloading, the system solves problems such as cement wall adhesion, improves silo capacity efficiency, reduces safety accidents caused by cement blockage and leakage, protects the lives of workers and the property of the company, and reduces environmental pollution.

[0018] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0021] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A self-unloading device for cement silos without power flow, comprising a support frame installed at the discharge port of the cement silo, characterized in that: The support frame includes multiple vertically upward-arranged support rods, with a discharge chamber between the support rods. A support block is provided at the top of each support rod, and a vibrating rod for striking the support rod is provided below the support block.

2. The cement silo non-powered powder flow self-unloading device according to claim 1, characterized in that: The bottom of the vibrating rod is located on the inner wall of the support rod, and the top of the vibrating rod is provided with a gravity ball head.

3. The cement silo non-powered powder flow self-unloading device according to claim 1, characterized in that: At least four support rods are provided, and multiple support rings are provided between the support rods. The support rings are equidistant along the length of the support rods.

4. The cement silo non-powered powder flow self-unloading device according to claim 1, characterized in that: The support block has an arc-shaped head at the top and multiple reinforcing rods at the bottom.

5. The cement silo non-powered powder flow self-unloading device according to claim 1, characterized in that: The lower part of the support rod is provided with multiple connecting plates, and the sides of the connecting plates are provided with reinforcing rods.

Images