Improved structure of high-efficiency furnace tube of rotary kiln
By adopting the design of hyperbolic inner furnace tube and inner wall frying plate in the rotary kiln furnace tube, the problems of material accumulation and dust generation are solved, the contact efficiency between the material and the reducing agent is improved, the calcination effect of high efficiency and low cost is achieved, and the product quality and thermal energy utilization rate are improved.
Patent Information
- Application Number
- CN202422541374.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing rotary kiln tubes have problems such as easy accumulation and falling of materials, high dust, large loss, low recovery rate, large amount of reducing agent used, high cost, incomplete material reaction, and low thermal energy utilization, which lead to poor calcination effect and poor product quality.
The system adopts a hyperbolic inner furnace tube structure and a stir-fry plate design evenly distributed on the inner wall. The inner furnace tube is divided into several equal units. Multiple equal inner furnace tubes and stir-fry plates are set in the outer furnace tube to improve the structure, increase the contact area and time between the material and the reducing agent, and reduce dust and heat energy loss.
The material falls in multiple lines and is not easy to accumulate, which reduces dust, reduces losses, increases the actual recovery rate and the efficiency of reducing agent use, improves the calcination effect and the quality of the finished product, reduces costs, and improves the utilization rate of thermal energy.
Smart Images
Figure CN223400122U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of calcination heating, and particularly relates to an improved structure of a high-efficiency furnace tube of a rotary kiln with less dust, high material recovery rate, less reducing agent usage, more thorough material reaction, and high thermal energy utilization. Background Art
[0002] Rotary kiln is widely used in material calcination. Its main functional structure is the furnace tube. The material is heated by the furnace tube to react with the reducing agent in the furnace tube. At present, the existing rotary kiln furnace tubes only have a single outer tube, which is placed at an angle. The material is heated and calcined during the movement in the outer tube. This structure with only a single outer tube can meet certain usage requirements, but it also has major defects. The material can only move downward from the inner wall of the outer tube at the lowest point, which is easy to accumulate and fall. The material discharge speed is fast and dust is easily generated. The material loss is large and the actual recovery rate is low. The space inside the tube is large, the amount of reducing agent used is large, the use cost is high, the contact time between the material and the reducing agent is short and the contact area is small, the material reaction is not thorough enough, the calcination effect is not ideal, the heat energy loss is large and the utilization rate is low, the obtained product quality is poor, and it cannot effectively meet the usage requirements.
[0003] The technical problem to be solved by the utility model is to provide an improved structure of a high-efficiency furnace tube of a rotary kiln, which is not easy to pile up when multiple lines fall, has a slow material feeding speed and is not easy to generate dust, has a small material loss and a high actual recovery rate, has a small space in the tube and a small amount of reducing agent used, has a low cost of use, fully contacts the material and the reducing agent and reacts thoroughly, has a good calcination effect, has a better quality of the finished product, has a small heat energy loss and a high utilization rate, and effectively meets the use requirements. Utility Model Content
[0004] In order to solve the problems of the above-mentioned prior art, such as the material can only move downward from the inner wall of the lowest part of the outer tube, easy to accumulate and fall, fast material discharge speed, easy to generate dust, large material loss and low actual recovery rate, large space in the tube, large amount of reducing agent used, high cost of use, short contact time and small contact area between the material and the reducing agent, insufficient material reaction, unsatisfactory calcination effect, large heat energy loss and low utilization rate, poor product quality, and inability to effectively meet use requirements, the present invention adopts the following technical solutions:
[0005] The utility model provides an improved structure of a high-efficiency furnace tube of a rotary kiln, comprising a furnace tube flange, an outer furnace tube and an inner furnace tube, wherein the front and rear ends of the outer furnace tube are fixedly supported by the furnace tube flange, the inner furnace tube is arranged in the middle of the inner portion of the outer furnace tube and both ends are supported and fixed by the furnace tube flange, the inner furnace tube comprises a plurality of inner furnace tube units with equally divided structures, the inner furnace tube is integrally processed and formed, and the inner furnace tube units are in a hyperbolic shape.
[0006] Preferably, the inner furnace tube is divided into three, four or six equal parts.
[0007] Preferably, a plurality of stir-fry plates are evenly distributed on the inner wall of the outer furnace tube.
[0008] The beneficial effects of the utility model are: adding a multi-divided hyperbolic structure inner furnace tube, the material falls in multiple lines and is not easy to accumulate, the material feeding speed is slow and dust is not easy to be generated, the material loss is small and the actual recovery rate is high, the space in the tube is small, the amount of reducing agent used is small, the use cost is low, the material and the reducing agent are fully contacted and reacted thoroughly, the calcination effect is good, the quality of the finished product is better, the heat energy loss is small and the utilization rate is high, and the use requirements are effectively met. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a structural diagram of an embodiment of the present utility model.
[0010] Figure 2 This is a schematic structural diagram of the inner furnace tube of the present invention divided into four equal parts.
[0011] Figure 3 This is a schematic diagram of the structure of the utility model in which the inner furnace tube is divided into 6 equal parts. DETAILED DESCRIPTION
[0012] The preferred embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0013] See also Figure 1 An improved structure of a high-efficiency furnace tube for a rotary kiln includes a furnace tube flange 1, an outer furnace tube 2, and an inner furnace tube 3. The outer furnace tube 2 is fixedly supported at both ends by the furnace tube flange. The inner furnace tube 3 is located in the center of the outer furnace tube 2 and is supported and fixed at both ends by the furnace tube flange 1. The inner furnace tube 3 includes a plurality of inner furnace tube units 31 with equal structures. The inner furnace tube 1 is integrally formed, which can improve its strength and reduce the difficulty of production and installation. The inner furnace tube unit 31 is hyperbolic. Figure 1 The structure is divided into three equal parts, and there is an additional equally divided hyperbolic structure inner furnace tube. Most materials fall from each inner furnace tube unit. The materials fall in multiple lines and are not easy to accumulate. The material feeding speed is slow and dust is not easy to be generated. The material loss is small and the actual recovery rate is high. The inner tube is added inside the outer tube, which reduces the internal space. Therefore, the amount of reducing agent used is small and the cost of use is low. At the same time, a number of frying plates 21 are evenly distributed on the inner wall of the outer furnace tube 2. The frying plates can stir the materials. In this way, the materials are fully contacted with the reducing agent and the reaction is thorough, the calcination effect is good, and the finished product quality is better.
[0014] Wherein, the inner furnace tube is divided into three equal parts (such as Figure 1 ), 4 equal parts (such as Figure 2 ) or 6 equal parts Figure 3 The structure can be divided into several equal parts according to the size of the outer tube and actual use needs, as long as the use needs are met.
[0015] The beneficial effects of the utility model are: adding a multi-divided hyperbolic structure inner furnace tube, the material falls in multiple lines and is not easy to accumulate, the material feeding speed is slow and dust is not easy to be generated, the material loss is small and the actual recovery rate is high, the space in the tube is small, the amount of reducing agent used is small, the use cost is low, the material and the reducing agent are fully contacted and reacted thoroughly, the calcination effect is good, the quality of the finished product is better, the heat energy loss is small and the utilization rate is high, and the use requirements are effectively met.
[0016] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.
Claims
1. An improved structure of a high-efficiency furnace tube for a rotary kiln, characterized by: The invention comprises a furnace tube flange (1), an outer furnace tube (2) and an inner furnace tube (3); the front and rear ends of the outer furnace tube (2) are fixedly supported by the furnace tube flange (1); the inner furnace tube (3) is arranged in the middle of the outer furnace tube (2) and both ends are supported and fixed by the furnace tube flange (1); the inner furnace tube (3) comprises a plurality of inner furnace tube units (31) of equally divided structures; the inner furnace tube (3) is integrally formed, and the inner furnace tube units (31) are in a hyperbolic shape.
2. The improved structure of high-efficiency furnace tube of rotary kiln according to claim 1, characterized in that: The inner furnace tube (3) is divided into three, four or six equal parts.
3. The improved structure of high-efficiency furnace tube of rotary kiln according to claim 1, characterized in that: A plurality of stir-fry plates (21) are evenly distributed on the inner wall of the outer furnace tube (2).