Inner heat pipe dryer
By designing an inner heat pipe dryer, using structures such as inner heat pipes and guard pipes to form hot air channels with good sealing properties, the problem of the existing technology being difficult to efficiently dry high-end quartz sand and other materials is achieved, and an efficient and environmentally friendly drying effect is achieved.
Patent Information
- Application Number
- CN202422137453.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing drum dryers are difficult to efficiently dry high-end quartz sand and other materials, and hot flue gas pollution leads to poor drying effect.
An internal heat pipe dryer is designed. The inner heat pipe is arranged at intervals along the inner wall of the drying tube, and is connected to the end surface support plate through the front guard pipe, the rear guard pipe, and the expansion pipe, forming a hot air channel with good sealability to adapt to the drying of materials with high temperature expansion.
It realizes efficient drying of high-end quartz sand and other materials, avoids hot flue gas pollution, and has a large expansion allowance to adapt to high-temperature expansion.
Smart Images
Figure CN222951411U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rotary drum dryer, in particular to an internal heat pipe dryer. Background Art
[0002] At present, the well-known "rotary dryer" is mainly used to dry materials such as clay, coal powder, iron powder, quartz, slag, metal ore concentrate, etc. (see "Cement Equipment Manual" Chapter 2, pages 71-86. Hunan Science and Technology Press, 1987 hand edition). The high-temperature hot flue gas generated by the burner is used to dry the material, but high-end quartz sand, etc. cannot be contaminated by hot flue gas. Therefore, a partition-type heat exchange dryer is designed. The material is dried by heat exchange through the internal heat pipe. Summary of the invention
[0003] The problem to be solved by the utility model is to propose an improvement plan or a replacement plan for the shortcomings of the above-mentioned prior art, especially an improvement or replacement plan for drying materials such as high-end quartz sand.
[0004] To solve the above problems, the solution adopted by the utility model is as follows: an internal heat pipe dryer, characterized in that the internal heat pipe dryer comprises a drying cylinder, an internal heat pipe, a feed cylinder, a discharge cylinder, a hot air head hood and a hot air tail hood; the internal heat pipes are arranged at intervals along the inner wall of the drying cylinder; the feed cylinder and the discharge cylinder are connected to the two ends of the drying cylinder through end support plates, the internal heat pipe is arranged through the end support plates, and the ends of the internal heat pipe are located on the outside of the feed cylinder and the discharge cylinder; the hot air head hood is sleeved on the feed end of the drying cylinder, and the hot air tail hood is sleeved on the discharge end of the drying cylinder, the hot air head hood and the hot air tail hood cover the two ends of the internal heat pipe to form a hot air channel; the drying cylinder is arranged on a rotating component, and the rotating component is used to provide power to achieve rotation.
[0005] Furthermore, the internal heat pipe drying machine is characterized in that the internal heat pipe is connected to the end support plate through a front protective pipe, a rear protective pipe, and an expansion pipe; the front protective pipe and the rear protective pipe are fixedly connected to the two ends of the expansion pipe respectively; the front protective pipe is fixedly connected to the end support plate, and the rear protective pipe is fixedly connected to the internal heat pipe.
[0006] Furthermore, the internal heat pipe dryer is characterized in that a feed hood is provided at the front end of the feed cylinder for docking with the feed machine; a discharge hood is provided at the end of the discharge cylinder, a water vapor outlet is provided at the top of the discharge hood, and a material outlet is provided at the bottom.
[0007] Furthermore, the internal heat pipe drying machine is characterized in that the internal heat pipe is provided with at least three layers; the internal heat pipe is provided on the inner wall of the drying cylinder through a mounting bracket.
[0008] The expansion tube used on the internal heat pipe is related to the dryer setting parameters and meets the following requirements:
[0009] △l n =a* l n (t n -t 0 ),
[0010] Among them, △l n -- is the expansion value (mm);
[0011] a--thermal expansion coefficient, (for carbon steel a=1.2x10 -5 / ℃);
[0012] t n -- Average surface temperature of the nth span in working state (℃);
[0013] t 0 --Ambient temperature during installation (℃).
[0014] The technical effects of the utility model are as follows: the material enters the dryer from the feed port, exits the dryer from the discharge port, and water vapor is discharged from the steam outlet; hot air enters from the hot air inlet, passes through the heat exchange tube, and exits from the hot air tail gas outlet of the heat exchange tube, forming indirect drying.
[0015] The internal heat pipe is connected to the end support plate through the front protective pipe, the rear protective pipe, and the expansion pipe. This design has good sealing performance and will not leak out through the tail. It also has a large expansion margin, which is suitable for drying materials with high temperature and large expansion. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of a heat pipe dryer with an expansion tube.
[0017] Figure 2 for Figure 1 Schematic diagram of the expansion tube installation.
[0018] Figure 3 This is a schematic diagram of the structure of a heat pipe dryer without an expansion tube.
[0019] Figure 4 for Figure 3 Schematic diagram of the internal heat pipe installation.
[0020] Among them, 1 is a drying cylinder, 2 is an internal heat pipe, 3 is a feed cylinder, 4 is a discharge cylinder, 5 is an end support plate, 6 is a hot air head cover, 7 is a hot air tail cover, 8 is a feed cover, 9 is a discharge cover, 21 is a front protective tube, 22 is an expansion tube, and 23 is a rear protective tube. DETAILED DESCRIPTION
[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0022] Example: Figure 3 , Figure 4As shown, an internal heat pipe dryer comprises a drying cylinder, an internal heat pipe, a feeding cylinder, a discharging cylinder, a hot air head cover and a hot air tail cover; the internal heat pipes are arranged at intervals along the inner wall of the drying cylinder; the feeding cylinder and the discharging cylinder are connected to the two ends of the drying cylinder through end support plates, the internal heat pipe is arranged through the end support plates, and the ends of the internal heat pipe are located on the outside of the feeding cylinder and the discharging cylinder; the hot air head cover is sleeved on the feeding end of the drying cylinder, and the hot air tail cover is sleeved on the discharging end of the drying cylinder, the hot air head cover and the hot air tail cover cover the two ends of the internal heat pipe to form a hot air channel; the drying cylinder is arranged on a rotating component, which is powered by the rotating component to realize rotation, and a feeding cover is arranged at the front end of the feeding cylinder for docking with a feeding machine; a discharging cover is arranged at the end of the discharging cylinder, a water vapor outlet is arranged on the top of the discharging cover, and a material outlet is arranged on the bottom, and the internal heat pipe has three layers; the internal heat pipe is arranged on the inner wall of the drying cylinder through a mounting bracket.
[0023] like Figure 1 , Figure 2 As shown, an internal heat pipe dryer comprises a drying cylinder, an internal heat pipe, a feeding cylinder, a discharging cylinder, a hot air head cover and a hot air tail cover; the internal heat pipes are arranged at intervals along the inner wall of the drying cylinder; the feeding cylinder and the discharging cylinder are connected to the two ends of the drying cylinder through end support plates, the internal heat pipe is arranged through the end support plates, and the ends of the internal heat pipe are located on the outside of the feeding cylinder and the discharging cylinder; the hot air head cover is sleeved on the feeding end of the drying cylinder, and the hot air tail cover is sleeved on the discharging end of the drying cylinder, the hot air head cover and the hot air tail cover cover the two ends of the internal heat pipe to form a hot air channel; the drying The cylinder is arranged on the rotating assembly, and the rotating assembly provides power to realize rotation; the internal heat pipe is connected to the end support plate through the front protective tube, the rear protective tube and the expansion tube; the front protective tube and the rear protective tube are fixedly connected to the two ends of the expansion tube respectively; the front protective tube is fixedly connected to the end support plate, and the rear protective tube is fixedly connected to the internal heat pipe, and a feed hood is arranged at the front end of the feed cylinder for docking with the feed machine; a discharge hood is arranged at the end of the discharge cylinder, a water vapor outlet is arranged on the top of the discharge hood, and a material outlet is arranged on the bottom, and the internal heat pipe has three layers; the internal heat pipe is arranged on the inner wall of the drying cylinder through a mounting bracket.
Claims
1. An internal heat pipe drying machine, characterized in that: The internal heat pipe dryer comprises a drying cylinder, an internal heat pipe, a feed cylinder, a discharge cylinder, a hot air head hood and a hot air tail hood; the internal heat pipes are arranged at intervals along the inner wall of the drying cylinder; the feed cylinder and the discharge cylinder are connected to the two ends of the drying cylinder through end support plates, the internal heat pipe is arranged through the end support plates, and the ends of the internal heat pipe are located on the outside of the feed cylinder and the discharge cylinder; the hot air head hood is sleeved on the feed end of the drying cylinder, and the hot air tail hood is sleeved on the discharge end of the drying cylinder, the hot air head hood and the hot air tail hood cover the two ends of the internal heat pipe to form a hot air channel; the drying cylinder is arranged on a rotating component, and the rotating component provides power to realize rotation.
2. The internal heat pipe drying machine according to claim 1, characterized in that: The internal heat pipe is connected to the end support plate through the front protective pipe, the rear protective pipe and the expansion pipe; the front protective pipe and the rear protective pipe are fixedly connected to the two ends of the expansion pipe respectively; the front protective pipe is fixedly connected to the end support plate, and the rear protective pipe is fixedly connected to the internal heat pipe.
3. The internal heat pipe drying machine according to claim 1, characterized in that: A feed cover is arranged at the front end of the feed barrel for docking with a feed machine; a discharge cover is arranged at the end of the discharge barrel, a water vapor outlet is arranged at the top of the discharge cover, and a material outlet is arranged at the bottom.
4. The internal heat pipe drying machine according to claim 1, characterized in that: The inner heat pipe is provided with at least three layers; the inner heat pipe is arranged on the inner wall of the drying cylinder through a mounting bracket.