蒸汽排管干燥机
By installing multiple layers of heat exchange tubes and a material guide spiral inside the rotary drum dryer, the problems of low efficiency and temperature control caused by unidirectional flow of the heat medium are solved, achieving efficient agitation and temperature control, reducing the risk of spontaneous combustion of pulverized coal, and providing convenient maintenance space.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-17
AI Technical Summary
The existing rotary drum dryer has a unidirectional flow of heat medium, which results in a limited contact area with pulverized coal, low thermal efficiency, and difficulty in temperature control. In particular, it can easily cause fires or chemical additives to fail, especially for heat-sensitive materials such as pulverized coal.
Multi-layer heat exchange tubes are arranged inside the rotating drum. Hot steam conducts heat through the heat exchange tubes, increasing the heat dissipation area. Heat transfer oil is used to adapt to different environments. Combined with the design of the material guide screw and maintenance space, the mixing efficiency and temperature control are improved.
It improves thermal efficiency, reduces the risk of spontaneous combustion of pulverized coal, and provides convenient maintenance space, making it suitable for various operating environments.
Smart Images
Figure CN224517204U_ABST
Abstract
Claims
1. A steam tube dryer characterized by: The rotary drum (1) includes a feed inlet (11) at one end. A distribution box (5) is installed at the end of the rotary drum (1) near the feed inlet (11). A hot medium inlet (50) extending to the outside of the rotary drum (1) is connected to the distribution box (5). A collection box (6) is installed at the end of the rotary drum (1) away from the feed inlet (11). A cold medium outlet (60) extending to the outside of the rotary drum (1) is connected to the collection box (6). A main pipe (70) is installed around the distribution box (5) and the collection box (6). A heat exchange pipe (7) arranged around the central axis of the rotary drum (1) is connected between the main pipe (70) on the distribution box (5) and the main pipe (70) on the collection box (6). The heat exchange pipe (7) is arranged in layers from the inside to the outside of the rotary drum (1).
2. The steam tube dryer of claim 1, wherein: The diameter of the heat exchange tube (7) gradually increases from the inner layer to the outer layer.
3. The steam tube dryer of claim 1, wherein: An extension tube (51) is installed on the distribution box (5). The end of the extension tube (51) away from the distribution box (5) is closed. A secondary conduit (71) is installed around the extension tube (51). Part of the heat exchange tube (7) is connected between the secondary conduit (71) and the main tube (70) located on the collection box (6). A manhole operating space is formed between the secondary conduit (71) and the main tube (70) located on the distribution box (5).
4. The steam tube dryer of claim 1, wherein: A vent hood (8) is installed on the outer side of the rotary drum (1) near the feed inlet (11), and a vent port (80) is provided on the vent hood (8). A discharge hood (9) is installed on the outer side of the rotary drum (1) away from the feed inlet (11), and a discharge port (90) is provided on the discharge hood (9).
5. The steam tube dryer of claim 1, wherein: A guide screw (12) is installed on the inner wall of the rotary drum (1) near the feed inlet (11).
6. The steam tube dryer of claim 1, wherein: A support (72) is provided between the heat exchange tubes (7) in the inner layer.
7. The steam tube dryer of claim 1, wherein: A drive device (2) is provided at the lower middle part of the rotary drum (1). A transmission gear ring (10) that cooperates with the drive device (2) is provided on the peripheral wall of the rotary drum (1). A support roller device (3) and a stop roller device (4) are provided on the left and right sides of the drive device (2).