A kind of abandoned material pneumatic conveying anti-blocking device
By wrapping electric heating tape and U-shaped rings around the pneumatic conveying pipeline, combined with insulation cotton, the problem of blockage caused by the accumulation of waste samples at the bends in the pipe was solved, achieving efficient anti-blocking effect and low-cost conveying optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUADIAN LONGKOU POWER GENERATION CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-19
AI Technical Summary
In the coal sample preparation process, when the moisture content of the discarded sample is high, it is easy for it to pile up at the bend of the pipe and cause the pipe to become blocked. Existing anti-blocking structures are complex, costly, or unsuitable.
An electric heating belt is wrapped around the pneumatic conveying pipeline, combined with a U-shaped ring and insulation cotton. Heating reduces the accumulation of waste samples at the bends in the pipe, and the heating power is adjusted by monitoring the resistance through a power pump.
It achieves full-coverage heating of the bend, reduces the accumulation of waste samples, avoids pipe blockage, improves conveying efficiency, and has a simple structure and low cost.
Smart Images
Figure CN224377044U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste material pneumatic conveying anti-blocking device. Background Technology
[0002] Currently, in the automated coal sampling industry, a large amount of waste coal samples are generated after coal sampling. These waste samples often need to be pneumatically transported from automated equipment to other locations for centralized processing. In this process, the pneumatic conveying pipelines need to be arranged according to the actual site conditions, often resulting in a complex and intricate pipeline layout. Furthermore, when the pipelines turn, they are typically constructed by welding bends and straight pipes at specific angles. When the waste material has a high moisture content, coal easily adheres to and accumulates at the bends. As waste material gradually accumulates at these bends, it not only reduces the efficiency of the waste material conveying device but also clogs the pipelines, causing malfunctions in the automated equipment.
[0003] Moreover, the existing pneumatic conveying anti-blocking structure technology has the following defects: (1) Anti-blocking is achieved by increasing the surface roughness of the pipe. When the moisture content is too high, a small adsorption force will be generated. However, this method is difficult to process and has a high manufacturing cost. (2) The method of adding a hot air blower to the air inlet to supplement the system with hot air is applicable to coal with a certain moisture content, but not to coal with a particularly high moisture content. (3) The patent with announcement number CN208979885U uses an air cannon to impact and clear the blockage at the bend. However, this method has a complex structure. Especially when there are many bends, many corresponding air cannon pneumatic pipelines need to be configured in proportion. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the defect of the existing technology that when the moisture content of the waste material is relatively high, the coal is easily adsorbed at the bend of the pipe and accumulates, gradually blocking the pipe. This invention provides a waste material pneumatic conveying anti-blocking device.
[0005] The technical solution adopted by this utility model to solve its technical problem is a waste material pneumatic conveying anti-blockage device, including a pneumatic conveying pipeline, an electric heating belt, and a pneumatic conveyor. The pneumatic conveyor has a conveying port, and the pneumatic conveying pipeline is connected to the conveying port of the pneumatic conveyor. The pneumatic conveying pipeline includes a straight pipe and a bend. The heating belt is set on the pneumatic conveying pipeline, and the heating belt is bolted around the junction of the straight pipe and the bend in the pneumatic conveying pipeline.
[0006] Furthermore, it also includes a U-shaped ring, which is fixed to the pneumatic conveying pipe and has a gap between it and the pneumatic conveying pipe, and the electric heating belt passes through the gap and is wrapped around the pneumatic conveying pipe.
[0007] Furthermore, multiple U-shaped rings are provided, and the U-shaped rings are distributed in a staggered manner around the axis of the pneumatic conveying pipeline.
[0008] Furthermore, the U-shaped rings are staggered along the length of the pneumatic conveying pipeline.
[0009] Furthermore, it also includes thermal insulation cotton, which is attached to the pneumatic conveying pipe around which the electric heating belt is wound.
[0010] Furthermore, the pneumatic conveyor has a power pump for conveying pneumatic force. The resistance in the pipeline can be controlled by detecting the current of the power pump. If the current is abnormal, the power of the electric heating belt will be increased.
[0011] This utility model has the following beneficial technical effects:
[0012] The electric heating belt offers greater flexibility in placement and excellent anti-clogging performance, enabling full coverage of bends or straight pipes at any location. When the waste sample has a high moisture content, the heating from the electric heating belt directly reduces waste accumulation at bends, effectively preventing pipe blockage. Furthermore, the increased temperature creates positive pressure, which to some extent improves the efficiency of waste material transport. This device also boasts low manufacturing costs and a simple, compact structure. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the waste material pneumatic conveying anti-blockage device of this utility model;
[0014] Figure 2 This is a cross-sectional view of a bent pipe in an embodiment of the waste material pneumatic conveying anti-blockage device of this utility model;
[0015] Figure 3 This is a schematic diagram of a U-shaped ring from an embodiment of a pneumatic conveying anti-blocking device for waste materials according to this utility model.
[0016] Explanation of reference numerals in the attached figures:
[0017] 1. Pneumatic conveying pipeline; 1.1. U-shaped ring; 2. Electric heating belt; 3. Pneumatic conveyor; 4. Insulation cotton. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0019] Reference Figure 1This embodiment includes a pneumatic conveying pipeline 1, an electric heating belt 2, a pneumatic conveyor 3, and insulation cotton 4. The pneumatic conveyor 3 is a device used to provide pneumatic power, and the pneumatic conveyor 3 has a conveying port for connecting to the pneumatic conveying pipeline 1; the pneumatic conveying pipeline 1 includes multiple straight pipes and bends, and the straight pipes and bends are connected in an alternating manner, with coal waste samples becoming blocked at the bends.
[0020] Reference Figure 3 A U-shaped ring 1.1 is installed on the pneumatic conveying pipeline 1. The installation of the U-shaped ring 1.1 involves fixing the two pointed ends of the U-shape to the pneumatic conveying pipeline 1. The fixing methods include, but are not limited to, welding, bonding, and slotted snap-fit. At the same time, the U-shaped ring 1.1 and the pneumatic conveying pipeline 1 are made of stainless steel or carbon steel, so that welding, bonding and other methods can be realized.
[0021] Reference Figure 2 The electric heating belt 2 is bolt-shaped and wound around the junction of the straight and curved sections of the pneumatic conveying pipe 1. Furthermore, because the U-shaped ring 1.1 is installed with its two pointed ends fixed to the pneumatic conveying pipe 1, a gap remains between the bottom of the U-shaped ring 1.1 and the pneumatic conveying pipe 1. While the electric heating belt 2 is bolt-shaped and wound, it is restrained by the U-shaped ring 1.1, allowing the electric heating belt 2 to fit into the gap and conform to the outer wall of the pneumatic conveying pipe 1. This not only prevents the electric heating belt 2 from twisting and deforming but also ensures more even heating at the curved sections. Simultaneously, insulation cotton 4 is attached after the electric heating belt 2 is wound around the pneumatic conveying pipe 1 to minimize heat loss during heating, thereby improving the heating effect.
[0022] Reference Figure 3 Multiple U-shaped rings 1.1 are provided, and the U-shaped rings 1.1 are staggered in both the axial direction and the length direction of the pneumatic conveying pipeline 1, that is, multiple U-shaped rings 1.1 are arranged spirally along the pipeline.
[0023] In the actual operation of the pneumatic conveyor 3, the resistance in the pneumatic conveying pipeline 1 is controlled by detecting the current of the power pump. If the current is abnormal, the power of the electric heating belt 2 will be increased to quickly evaporate the moisture of the discarded sample and avoid clogging the pipeline.
[0024] The implementation principle of the waste material pneumatic conveying anti-blockage device in this embodiment of the utility model is as follows:
[0025] When the material is pneumatically conveyed, the electric heating belt 2 heats it simultaneously. The heat is quickly transferred to the inner surface through the elbow. If the coal has a high moisture content, the heating power of the electric heating belt 2 can be increased to rapidly raise the elbow temperature. This evaporates the external moisture of the waste material at the elbow, reduces the viscosity of the waste material, and effectively prevents the waste material from clogging at the elbow. At the same time, a certain positive pressure is formed, which helps to improve the conveying efficiency of the waste material.
[0026] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A pneumatic conveying anti-clogging device for waste materials, characterized in that, It includes a pneumatic conveying pipe (1), an electric heating belt (2), and a pneumatic conveyor (3). The pneumatic conveyor (3) has a conveying port. The pneumatic conveying pipe (1) is connected to the conveying port of the pneumatic conveyor (3). The pneumatic conveying pipe (1) includes a straight pipe and a bend. The heating belt is installed on the pneumatic conveying pipe (1) and is bolted around the junction of the straight pipe and the bend in the pneumatic conveying pipe (1).
2. The anti-blocking device for pneumatic conveying of waste materials according to claim 1, characterized in that, It also includes a U-shaped ring (1.1), which is fixed on the pneumatic conveying pipe (1) and has a gap between it and the pneumatic conveying pipe (1), and the electric heating belt (2) passes through the gap and is wrapped around the pneumatic conveying pipe (1).
3. The waste material pneumatic conveying anti-blockage device according to claim 2, characterized in that, Multiple U-shaped rings (1.1) are provided, and the U-shaped rings (1.1) are distributed in a staggered manner around the axis of the pneumatic conveying pipe (1).
4. The waste material pneumatic conveying anti-blocking device according to claim 3, characterized in that, The U-shaped ring (1.1) is staggered along the length of the pneumatic conveying pipeline (1).
5. The anti-blocking device for pneumatic conveying of waste materials according to claim 1, characterized in that, It also includes thermal insulation cotton (4), which is attached to the pneumatic conveying pipe (1) around which the electric heating belt (2) is wound.
6. The anti-blocking device for pneumatic conveying of waste materials according to claim 1, characterized in that, The pneumatic conveyor (3) has a power pump for conveying pneumatic force. The resistance in the pipeline can be controlled by detecting the current of the power pump. If the current is abnormal, the power of the electric heating belt (2) will be increased.