A sampling line air shunt heating device
By combining the design of the diversion heating pipeline and the airflow heater, the problem of low efficiency of existing airflow heating devices is solved, and efficient material conveying pipeline cleaning is achieved to prevent blockage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HUADIAN ELECTRIC POWER DEV CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-06-19
Smart Images
Figure CN224381768U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material conveying, specifically to a sampling pipeline air diversion heating device. Background Technology
[0002] With societal development, the direct use of pneumatic transport for raw materials has become common in sampling processes in industries such as coal, ore, and cement. This involves using a blower (vacuum pump) to generate negative pressure, drawing granular materials from conveyor belts or stockpiles into transport pipelines. However, due to the inherent characteristics of the granular materials and the moisture content of the air in the pipeline, these materials tend to adhere to the pipeline after entering, affecting not only the results of subsequent analysis but also gradually accumulating and agglomerating, eventually clogging the pipeline. Currently, the common method for cleaning pipelines is to purge them with high-temperature, dry airflow; however, existing airflow heating devices generally have low heating efficiency, impacting the cleaning effect. Utility Model Content
[0003] In view of this, embodiments of the present invention provide a sampling pipeline air diversion heating device to solve the technical problem of low heating efficiency of existing airflow heating devices.
[0004] This utility model provides a sampling pipeline air diversion heating device, including an air inlet pipeline, multiple diversion heating pipelines, a manifold pipeline, a fan, and a purging pipeline. The multiple diversion heating pipelines are connected in parallel, and each diversion heating pipeline is equipped with an airflow heater for heating the flowing air. The air inlet ends of the diversion heating pipelines are all connected to the air inlet pipeline, and the air outlet ends of the diversion heating pipelines are all connected to the manifold pipeline. The manifold pipeline is connected to the air inlet end of the fan, and the air outlet end of the fan is connected to the purging pipeline.
[0005] Optionally, at least one of the diversion heating pipes is provided with a partition sleeve, which is located at the air inlet end of the airflow heater, and the partition sleeve is provided with a through hole for airflow to pass through.
[0006] Optionally, both the inlet and outlet of the airflow heater are connected to the diversion heating pipeline via connecting sleeves, and the spacer is embedded in the connecting sleeve at the inlet of the airflow heater.
[0007] Optionally, a pinch valve is installed on both the intake pipe and the purge pipe.
[0008] The present invention has the following beneficial effects: by using a split heating pipeline, the airflow drawn into the pipeline by the fan is split into multiple paths, which are then heated by airflow heaters before being converged into the purging pipeline; splitting and heating the airflow can obtain a large amount of heat in a short time, causing the airflow temperature to rise sharply, which effectively improves the heating efficiency of the airflow. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of 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.
[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0011] The numbers in the diagram represent:
[0012] 1. Inlet pipe; 2. Diverter heating pipe; 3. Manifold pipe; 4. Fan; 5. Purge pipe; 6. Airflow heater; 7. Connecting elbow; 8. Spacer; 9. Connecting sleeve; 10. Pinch valve. Detailed Implementation
[0013] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1 As shown, an embodiment of this utility model provides a sampling pipeline air diversion heating device, including an inlet pipeline 1, multiple diversion heating pipelines 2, a manifold pipeline 3, a fan 4 (or a vacuum pump or other air extraction equipment), and a purge pipeline 5. The multiple diversion heating pipelines 2 are connected in parallel, and the inlet ends of all diversion heating pipelines 2 are connected to the inlet pipeline 1, while the outlet ends of all diversion heating pipelines 2 are connected to the manifold pipeline 3. The manifold pipeline 3 is connected to the inlet end of the fan 4, and the outlet end of the fan 4 is connected to the purge pipeline 5.
[0015] Each branch heating pipe 2 is equipped with an airflow heater 6 to heat the flowing air. The branch heating pipe 2 can divide the airflow drawn into the intake pipe 1 by the fan 4 into multiple paths. After being heated by the airflow heater 6 on each branch heating pipe 2, the airflows converge into the confluence pipe 3. Then, the fan 4 draws the combined high-temperature airflow to the purging pipe 5 so that the heated and dried airflow can be used to clean the downstream pipes (such as sampling pipes and other material conveying pipes).
[0016] With the fan 4 at a constant power, the total airflow entering the pipeline remains constant. After being branched into multiple paths by the various branch heating pipelines 2, the airflow into some branches is less than that into the branch heating pipelines 2 that are directly connected to the inlet pipeline 1 due to the obstruction of the connecting bends 7 between the pipelines. In other words, the airflow in each branch heating pipeline 2 is affected differently by factors such as the degree of pipeline bending. With the same power for each airflow heater 6, each airflow absorbs the same amount of heat, and the airflow temperature in some branch heating pipelines 2 with larger airflow is raised more slowly. Therefore, in order to make the airflow in each branch heating pipeline 2 the same and to achieve balanced heating, a spacer 8 can be installed in some (at least one of the pipelines with the largest airflow) branch heating pipelines 2. The spacer 8 is located at the air inlet end of the airflow heater 6 and has through holes for airflow to pass through. The airflow can be reduced by blocking the spacer 8. The airflow in the corresponding split heating pipe 2 can be adjusted by changing the size of the through hole on the spacer 8, so that the airflow in each split heating pipe 2 is the same, and the purpose of balanced heating is achieved.
[0017] Specifically, in this embodiment of the utility model, the air inlet and outlet of the airflow heater 6 are both connected to the diversion heating pipeline 2 through the connecting sleeve 9, and the spacer 8 is embedded in the connecting sleeve 9 at the air inlet of the airflow heater 6, which is convenient for disassembly and assembly.
[0018] Both the intake pipe 1 and the purge pipe 5 are equipped with clamp valves 10. When it is necessary to clean the rear pipe, open the clamp valves 10 on the intake pipe 1 and the purge pipe 5, start the fan 4, and the fan 4 draws the airflow into the pipe and splits it into multiple paths through each of the branch heating pipes 2. The airflow is then heated by the airflow heaters 6 on each of the branch heating pipes 2. The heated and dried airflow converges in the confluence pipe 3 and is then drawn by the fan 4 to the purge pipe 5 to clean the rear pipe.
[0019] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this utility model. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A sample line air shunt heating apparatus, characterized by: The system includes an intake pipe, multiple branch heating pipes, a manifold pipe, a fan, and a purging pipe. The multiple branch heating pipes are connected in parallel, and each branch heating pipe is equipped with a gas heater for heating the airflow. The intake ends of the branch heating pipes are all connected to the intake pipe, and the outlet ends of the branch heating pipes are all connected to the manifold pipe. The manifold pipe is connected to the intake end of the fan, and the outlet end of the fan is connected to the purging pipe.
2. The sampling pipeline air diversion heating device according to claim 1, characterized in that: At least one of the aforementioned split heating pipes is provided with a partition sleeve, which is located at the air inlet end of the airflow heater, and the partition sleeve is provided with a through hole for airflow to pass through.
3. The sampling pipeline air diversion heating device according to claim 2, characterized in that: Both the inlet and outlet of the airflow heater are connected to the diversion heating pipeline via connecting sleeves, and the spacer is embedded in the connecting sleeve at the inlet of the airflow heater.
4. The sampling pipeline air diversion heating device according to claim 1, characterized in that: Both the intake pipe and the purging pipe are equipped with clamp valves.