Efficient energy-saving roasting and drying device
By improving the design and sealing structure of the inner and outer cylinders of the rotary kiln, and combining spiral conveyor and electric heating, the problems of high heat loss and high energy consumption of the rotary kiln have been solved, achieving efficient, energy-saving and high-reduction material processing.
Patent Information
- Application Number
- CN202422926714.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing rotary kiln equipment suffers from high heat loss and high energy consumption, especially as external air enters the internal cavity of the rotary kiln, leading to a decrease in the reduction rate.
A high-efficiency and energy-saving roasting and drying device was designed. Through the design and sealing structure of the inner and outer cylinders of the rotary kiln, the entry of external air into the rotary kiln is reduced. Combined with the spiral conveyor and electric heating mechanism, the material is heated and cooled efficiently. Inert gas protection is used to reduce heat loss.
It significantly reduces energy consumption, improves the reduction rate of materials, saves more than 50% of energy consumption, and avoids material oxidation through inert gas protection.
Smart Images
Figure CN223500095U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of roasting and drying equipment, and in particular to a high-efficiency and energy-saving roasting and drying equipment. Background Technology
[0002] Rotary kilns are key pieces of equipment with high production capacity, strong material adaptability, and continuous production capabilities, producing uniform and stable product quality. They are widely used in various industries, such as cement, metallurgy, chemical, mining, and environmental protection. However, they also have many drawbacks: large footprint and high construction investment; especially, high heat loss and high energy consumption, which require technological innovation to solve. The main reasons are: 1. High-temperature flue gas at the kiln tail carries away a large amount of heat; 2. The large furnace body has a large heat dissipation area, and most lack external insulation, resulting in significant heat loss; 3. The temperature of the material exiting the kiln after the reaction is very high (usually 700-1200℃), carrying away a large amount of heat energy that is not fully utilized. This is especially true for rotary kilns that require inert or reducing atmosphere protection at the discharge point, where residual heat is primarily cooled by closed-loop water cooling, wasting both heat energy and water.
[0003] Existing rotary kilns, such as the solid-phase heat recovery energy-saving device disclosed in patent document CN118089423A, allow the heat from the material between the spiral blades of the outer cylinder to be absorbed by the material between the spiral blades of the inner cylinder as much as possible. This further reduces the energy required by the electric heating mechanism of the outer cylinder to heat the material falling to the first end of the outer cylinder for reaction. Rotary kilns require high sealing performance; during the reaction, external air should be prevented from entering the internal cavity of the kiln as much as possible to ensure the reduction rate. Therefore, a high-efficiency, energy-saving roasting and drying device is designed to reduce the amount of external air entering the internal cavity of the rotary kiln, thereby improving the reduction rate. Utility Model Content
[0004] To address the problems in the prior art, this application proposes a high-efficiency and energy-saving roasting and drying device that can reduce the amount of external air entering the internal cavity of the rotary kiln, thereby improving the reduction rate.
[0005] This utility model provides a high-efficiency and energy-saving roasting and drying device, which includes a rotary kiln and a discharge cooling mechanism. The rotary kiln includes a rotary kiln drive mechanism and a rotary kiln inner cylinder and a rotary kiln outer cylinder that are fixed to each other. The rotary kiln outer cylinder is sleeved on the outside of the rotary kiln inner cylinder. The rotary kiln drive mechanism is used to drive the rotary kiln inner cylinder and the rotary kiln outer cylinder to rotate. A feeding mechanism is installed at the first end of the rotary kiln inner cylinder, and a discharging mechanism is provided at the second end of the rotary kiln outer cylinder.
[0006] The feeding mechanism can feed material to the first end of the inner cylinder of the rotary kiln. A rotary kiln inner cylinder spiral blade is installed inside the inner cylinder. Rotation of the inner cylinder causes the spiral blade to transport the material to the second end of the inner cylinder and drop it to the first end of the outer cylinder. An electric heating mechanism is installed at the first end of the outer cylinder, which heats the material that has fallen to the first end of the outer cylinder to induce a reaction. A rotary kiln outer cylinder spiral blade is located between the inner wall of the outer cylinder and the outer wall of the inner cylinder. Rotation of the outer cylinder causes the spiral blade to transport the reacted material to the second end of the outer cylinder and discharge it through the feeding mechanism.
[0007] The discharge cooling mechanism includes a spiral discharge cylinder with a spiral conveying blade installed inside. A cooling chamber is provided on the outer side of the spiral discharge cylinder, with an inlet and an outlet at each end. Cooling liquid can enter the cooling chamber from the inlet and exit from the outlet to cool the material inside the spiral discharge cylinder. The feeding mechanism is sealed and connected to the inlet end of the spiral discharge cylinder. A buffer chamber is provided at the outlet end of the spiral discharge cylinder, and the spiral conveying blade can transport the material to the buffer chamber for buffering. The material in the buffer chamber blocks the outlet end of the spiral discharge cylinder.
[0008] As a further improvement to the above technical solution:
[0009] The aforementioned high-efficiency and energy-saving roasting and drying device further includes a feeding mechanism comprising a rotary kiln outer cylinder rotating sealing sleeve and a rotary kiln discharge hopper. The rotary kiln outer cylinder rotating sealing sleeve is installed on the rotary kiln outer cylinder, and the rotary kiln outer cylinder can rotate relative to the rotary kiln outer cylinder rotating sealing sleeve. The rotary kiln discharge hopper is installed on the lower side of the rotary kiln outer cylinder rotating sealing sleeve. The rotary kiln discharge hopper is sealed and connected to the feed end of the spiral discharge cylinder. An inert gas inlet is provided on the upper side of the rotary kiln outer cylinder rotating sealing sleeve.
[0010] The aforementioned high-efficiency and energy-saving roasting and drying device further includes multiple scrapers spaced circumferentially on the inner wall of the rotary kiln inner cylinder and the inner wall of the rotary kiln outer cylinder. The scrapers extend axially along the inner cylinder of the rotary kiln. The rotation of the inner and outer cylinders of the rotary kiln allows the scrapers to turn over the incoming material. A mechanical vibration mechanism is installed on the outer wall of the outer cylinder of the rotary kiln. The mechanical vibration mechanism includes a hinge seat, a support rod, and a vibrating hammer. The hinge seat is installed on the outer wall of the outer cylinder of the rotary kiln. One end of the support rod is hinged to the hinge seat, and the vibrating hammer is installed on the other end of the support rod. When the outer cylinder of the rotary kiln rotates, the vibrating hammer can cause the support rod to rotate relative to the hinge seat under its own weight to strike the outer wall of the outer cylinder of the rotary kiln.
[0011] In the aforementioned high-efficiency and energy-saving roasting and drying device, one end of the support rod is hinged to the hinge seat via a hinge shaft, and the hinge shaft is parallel to the axial direction of the outer cylinder of the rotary kiln.
[0012] Furthermore, in the aforementioned high-efficiency and energy-saving roasting and drying device, multiple first temperature detection components are installed at intervals along the axial direction on the outer cylinder of the rotary kiln. The first temperature detection components are used to detect the internal temperature of the outer cylinder of the rotary kiln. Multiple second temperature detection components are installed at intervals along the axial direction on the inner cylinder of the rotary kiln. The second temperature detection components are used to detect the internal temperature of the inner cylinder of the rotary kiln. At the same time, an infrared thermal radiation imaging system is set in the length direction of the rotary kiln.
[0013] Furthermore, in the aforementioned high-efficiency and energy-saving roasting and drying device, the outer wall of the rotary kiln outer cylinder and the outer side of the rotary kiln outer cylinder electric heating mechanism are both covered with a heat insulation layer, and the rotary kiln outer cylinder electric heating mechanism is a resistance heating mechanism or an electromagnetic induction heating mechanism.
[0014] The aforementioned high-efficiency and energy-saving roasting and drying device further includes a feeding mechanism comprising a feeding component and a rotary kiln inner cylinder rotary sealing end cover. The rotary kiln inner cylinder rotary sealing end cover is located at the first end of the rotary kiln inner cylinder, and the rotary kiln inner cylinder is rotatable relative to the rotary kiln inner cylinder rotary sealing end cover. The feeding component is connected to the rotary kiln inner cylinder rotary sealing end cover, and the material of the feeding component can enter the rotary kiln inner cylinder through the rotary kiln inner cylinder rotary sealing end cover.
[0015] Furthermore, in the aforementioned high-efficiency and energy-saving roasting and drying device, an exhaust port is provided on the upper side of the rotary kiln inner cylinder rotating sealing end cover.
[0016] Furthermore, in the aforementioned high-efficiency and energy-saving roasting and drying device, observation windows are installed on the rotary kiln inner cylinder rotary sealing end cover and the second end face of the rotary kiln outer cylinder.
[0017] The above-mentioned technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of this utility model can be achieved.
[0018] This utility model provides a high-efficiency and energy-saving roasting and drying device, which, compared with the prior art, has at least the following beneficial effects: During operation, the rotary kiln drive mechanism drives the mutually fixed inner and outer cylinders of the rotary kiln to rotate. Materials mixed in a certain proportion are fed into the first end of the inner cylinder of the rotary kiln through the feeding mechanism. The rotation of the inner cylinder causes the spiral blades of the inner cylinder to transport the material to the second end of the inner cylinder and drop it to the first end of the outer cylinder. The electric heating mechanism of the outer cylinder heats the material that has fallen to the first end of the outer cylinder to make the material react. The rotation of the outer cylinder causes the spiral blades of the outer cylinder to transport the reacted material to the second end of the outer cylinder and discharge it through the feeding mechanism. The reacted material is discharged from the feeding mechanism to the spiral discharge cylinder. The spiral conveyor can transport the material to the buffer chamber for buffering. The material in the buffer chamber blocks the discharge end of the spiral discharge cylinder, and external air cannot enter the internal cavity of the rotary kiln from the spiral discharge cylinder, thus ensuring the reduction rate of the material.
[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein:
[0022] Figure 1 This shows a schematic diagram of the structure of the high-efficiency and energy-saving roasting and drying device provided in an embodiment of the present invention;
[0023] Figure 2 This shows a schematic diagram of the discharge cooling mechanism of the high-efficiency and energy-saving roasting and drying device provided in this embodiment of the present invention;
[0024] Figure 3 A schematic diagram of the mechanical vibration mechanism of the high-efficiency and energy-saving roasting and drying device provided in this embodiment of the present invention is shown.
[0025] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.
[0026] Explanation of reference numerals in the attached figures:
[0027] 100 - High-efficiency energy-saving roasting and drying device; 110 - Rotary kiln; 120 - Rotary kiln drive mechanism; 130 - Rotary kiln inner cylinder; 131 - Rotary kiln inner cylinder spiral blades; 132 - Scraper; 133 - Second temperature detection component; 140 - Rotary kiln outer cylinder; 141 - Rotary kiln outer cylinder electric heating mechanism; 142 - Rotary kiln outer cylinder spiral blades; 143 - First temperature detection component; 144 - Insulation layer; 150 - Feeding mechanism; 151 - Feeding component; 152 - Rotary kiln inner cylinder spiral blades. Rotary sealing end cap, 153-exhaust port, 154-observation window, 160-feeding mechanism, 161-rotary kiln outer cylinder rotary sealing sleeve, 162-rotary kiln discharge hopper, 163-inert gas inlet, 170-mechanical rapping mechanism, 171-hinged seat, 172-support rod, 173-vibrating hammer, 180-discharge cooling mechanism, 181-spiral discharge cylinder, 182-cooling chamber, 183-liquid inlet, 184-liquid outlet, 185-spiral conveyor plate, 186-buffer chamber. Detailed Implementation
[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0033] The present invention will be further described below with reference to the accompanying drawings.
[0034] This utility model provides a high-efficiency and energy-saving roasting and drying device 100, which can reduce the amount of external air entering the internal cavity of the rotary kiln, thereby improving the reduction rate.
[0035] Please see Figure 1 and Figure 2 The high-efficiency and energy-saving roasting and drying device 100 provided in this embodiment of the utility model includes a rotary kiln 110. The rotary kiln 110 includes a rotary kiln drive mechanism 120 and a rotary kiln inner cylinder 130 and a rotary kiln outer cylinder 140 fixed to each other. The rotary kiln outer cylinder 140 is sleeved on the outside of the rotary kiln inner cylinder 130. The rotary kiln drive mechanism 120 is used to drive the rotary kiln inner cylinder 130 and the rotary kiln outer cylinder 140 to rotate. A feeding mechanism 150 is installed at the first end of the rotary kiln inner cylinder 130, and a discharging mechanism 160 is provided at the second end of the rotary kiln outer cylinder 140.
[0036] The feeding mechanism 150 can feed materials to the first end of the inner cylinder 130 of the rotary kiln. The inner cylinder 130 is equipped with a rotary kiln inner cylinder spiral blade 131. The rotation of the inner cylinder 130 can cause the rotary kiln inner cylinder spiral blade 131 to transport the material to the second end of the inner cylinder 130 and drop it to the first end of the outer cylinder 140 of the rotary kiln. The first end of the outer cylinder 140 is equipped with a rotary kiln outer cylinder electric heating mechanism 141. The rotary kiln outer cylinder electric heating mechanism 141 can heat the material that falls to the first end of the outer cylinder 140 of the rotary kiln to make the material react. The inner wall of the outer cylinder 140 and the outer wall of the inner cylinder 130 of the rotary kiln are provided with a rotary kiln outer cylinder spiral blade. The rotation of the outer cylinder 140 can cause the rotary kiln outer cylinder spiral blade to transport the reacted material to the second end of the outer cylinder 140 of the rotary kiln and discharge it through the feeding mechanism 160. Based on actual production data, this device saves more than 50% of energy compared to conventional kilns. For example, in the roasting and reduction of manganese ore, a conventional kiln consumes 300 kW / t of electricity, while this high-efficiency energy-saving kiln only requires 80 kW / t.
[0037] The high-efficiency and energy-saving roasting and drying device 100 also includes a discharge cooling mechanism 180. Please refer to the details. Figure 2 The discharge cooling mechanism 180 includes a spiral discharge cylinder 181, a spiral conveyor blade 185 installed inside the spiral discharge cylinder 181, and a cooling chamber 182 on the outside of the spiral discharge cylinder 181. The cooling chamber 182 has an inlet 183 and an outlet 184 at its two ends, respectively. Cooling liquid can enter the cooling chamber 182 from the inlet 183 and be discharged from the outlet 184 to cool the material in the spiral discharge cylinder 181. The feeding mechanism 160 is sealed and connected to the feeding end of the spiral discharge cylinder 181. The discharge end of the spiral discharge cylinder 181 is provided with a buffer chamber 186. The spiral conveyor blade 185 can transport the material to the buffer chamber 186 for buffering. The material in the buffer chamber 186 blocks the discharge end of the spiral discharge cylinder 181. Since the material discharged from the feeding mechanism 160 still has a high temperature, when the material enters the screw discharge cylinder 181 for conveying, the coolant can enter the cooling chamber 182 from the inlet 183 and be discharged from the outlet 184 to cool the material in the screw discharge cylinder 181, thereby achieving the purpose of reducing the material temperature.
[0038] During operation, the rotary kiln drive mechanism 120 drives the mutually fixed rotary kiln inner cylinder 130 and rotary kiln outer cylinder 140 to rotate. The material mixed in a certain proportion is fed into the first end of the rotary kiln inner cylinder 130 through the feeding mechanism 150. The rotation of the rotary kiln inner cylinder 130 causes the rotary kiln inner cylinder spiral blades 131 to transport the material to the second end of the rotary kiln inner cylinder 130 and drop it to the first end of the rotary kiln outer cylinder 140. The rotary kiln outer cylinder electric heating mechanism 141 heats the material that has fallen to the first end of the rotary kiln outer cylinder 140 to make the material react. The rotation of the rotary kiln outer cylinder 140 causes the rotary kiln outer cylinder spiral blades to transport the reacted material to the second end of the rotary kiln outer cylinder 140 and discharge it through the feeding mechanism 160. After the reaction, the material is discharged from the feeding mechanism 160 to the spiral discharge cylinder 181. The spiral conveyor can transport the material to the buffer chamber for buffering. The material in the buffer chamber blocks the discharge end of the spiral discharge cylinder 181, and external air cannot enter the internal cavity of the rotary kiln from the spiral discharge cylinder 181, thus ensuring the reduction rate of the material.
[0039] Multiple scrapers 132 are spaced circumferentially along the inner wall of the rotary kiln inner cylinder 130 and the inner wall of the rotary kiln outer cylinder 140. The scrapers 132 extend axially along the inner cylinder 130. The rotation of the inner cylinder 130 and the outer cylinder 140 allows the scrapers 132 to turn over the incoming material. A mechanical vibrating mechanism 170 is installed on the outer wall of the outer cylinder 140. Please refer to [link / reference]. Figure 3 The mechanical rapping mechanism 170 includes a hinge seat 171, a support rod 172, and a vibrating hammer 173. The hinge seat 171 is installed on the outer wall of the rotary kiln outer cylinder 140. One end of the support rod 172 is hinged to the hinge seat 171, and the vibrating hammer 173 is installed on the other end of the support rod 172. When the rotary kiln outer cylinder 140 rotates, the vibrating hammer 173 can cause the support rod 172 to rotate relative to the hinge seat 171 under its own weight to strike the outer wall of the rotary kiln outer cylinder 140.
[0040] During operation, the rotary kiln drive mechanism 120 drives the mutually fixed rotary kiln inner cylinder 130 and rotary kiln outer cylinder 140 to rotate. The material mixed in a certain proportion is fed into the first end of the rotary kiln inner cylinder 130 through the feeding mechanism 150. The rotation of the rotary kiln inner cylinder 130 causes the rotary kiln inner cylinder spiral blades 131 to transport the material to the second end of the rotary kiln inner cylinder 130 and drop it to the first end of the rotary kiln outer cylinder 140. The rotary kiln outer cylinder electric heating mechanism 141 heats the material that has fallen to the first end of the rotary kiln outer cylinder 140 to make the material react. The rotation of the rotary kiln outer cylinder 140 causes the rotary kiln outer cylinder spiral blades to transport the reacted material to the second end of the rotary kiln outer cylinder 140 and discharge it through the feeding mechanism 160. When the rotary kiln outer cylinder 140 rotates, the vibratory hammer 173 can cause the support rod 172 to rotate relative to the hinge seat 171 under its own weight, thereby striking the outer wall of the rotary kiln outer cylinder 140. This shakes off the material accumulated on the inner wall of the rotary kiln inner cylinder 130 or the inner wall of the rotary kiln outer cylinder 140 between adjacent scrapers 132, reducing the probability of material accumulating on the inner wall of the rotary kiln inner cylinder 130 or the inner wall of the rotary kiln outer cylinder 140 between adjacent scrapers 132.
[0041] In this embodiment, please refer to section 3. One end of the support rod 172 is hinged to the hinge seat 171 via a hinge shaft, and the hinge shaft is parallel to the axial direction of the rotary kiln outer cylinder 140. The parallelism between the hinge shaft and the axial direction of the rotary kiln outer cylinder 140 facilitates the vibration hammer 173 to rotate relative to the hinge seat 171 under its own weight when the rotary kiln outer cylinder 140 rotates, thereby striking the outer wall of the rotary kiln outer cylinder 140.
[0042] The high-efficiency and energy-saving roasting and drying device 100 provided in this embodiment of the utility model is further described in detail below. Figure 1 Multiple first temperature detection components 143 are installed axially at intervals on the outer cylinder 140 of the rotary kiln. These first temperature detection components 143 are used to detect the internal temperature of the outer cylinder 140. Multiple second temperature detection components 133 are installed axially at intervals on the inner cylinder 130 of the rotary kiln. These second temperature detection components 133 are used to detect the internal temperature of the inner cylinder 130. When the rotary kiln 110 is operating, the first temperature detection components 143 and the second temperature detection components 133 detect the internal temperature of the inner cylinder 130 in real time, allowing operators to monitor the internal conditions of the rotary kiln 110 in real time. Simultaneously, an infrared thermal radiation imaging system is installed along the length of the rotary kiln 110, enabling clear observation of the temperature at any point within the kiln.
[0043] In this embodiment, please refer to the following for details. Figure 1The outer walls of the rotary kiln outer cylinder 140 and the outer side of the rotary kiln outer cylinder electric heating mechanism 141 are both covered with an insulation layer 144. The insulation layer 144 can insulate the rotary kiln outer cylinder 140 and the rotary kiln outer cylinder electric heating mechanism 141, preventing internal heat loss and thus reducing the energy consumption of the rotary kiln outer cylinder electric heating mechanism 141. In this embodiment, the rotary kiln outer cylinder electric heating mechanism 141 is a resistance heating mechanism or an electromagnetic induction heating mechanism.
[0044] The high-efficiency and energy-saving roasting and drying device 100 provided in this embodiment of the utility model is described in detail below. Figure 1 The feeding mechanism 160 includes a rotary sealing sleeve for the outer cylinder 140 of the rotary kiln and a discharge hopper for the rotary kiln 110. The rotary sealing sleeve for the outer cylinder 140 is installed on the outer cylinder 140 of the rotary kiln, and the outer cylinder 140 can rotate relative to the rotary sealing sleeve. The discharge hopper for the rotary kiln 110 is installed on the lower side of the rotary sealing sleeve for the outer cylinder 140. An inert gas inlet 163 is provided on the upper side of the rotary sealing sleeve for the outer cylinder 140. During operation, inert gas enters the rotary sealing sleeve for the outer cylinder 140 of the rotary kiln through the inert gas inlet 163 and enters the rotary kiln 110 to protect the material and prevent it from being oxidized.
[0045] In this embodiment, please refer to the following for details. Figure 1 The feeding mechanism 150 includes a feeding assembly 151 and a rotary sealing end cover for the inner cylinder 130 of the rotary kiln. The rotary sealing end cover is located at the first end of the inner cylinder 130 and is rotatable relative to it. The feeding assembly 151 is connected to the rotary sealing end cover, allowing material to enter the inner cylinder 130 through it. An exhaust port 153 is provided on the upper side of the rotary sealing end cover to discharge excess gas from the inner cylinder 130. Observation windows 154 are installed on the second end faces of the rotary sealing end cover and the outer cylinder 140 of the rotary kiln. During operation, the internal conditions of the inner cylinder 130 or the outer cylinder 140 can be observed through the observation windows 154. The entire end face is insulated, and a detachable structure is used at the observation and maintenance hole on the end face. A distance is reserved between the end face and the interior of the insulation structure to allow for the kiln to elongate under high temperatures.
[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
Claims
1. A high-efficiency and energy-saving roasting and drying device, characterized in that, The high-efficiency and energy-saving roasting and drying device includes a rotary kiln and a discharge cooling mechanism. The rotary kiln includes a rotary kiln drive mechanism and a rotary kiln inner cylinder and a rotary kiln outer cylinder that are fixed to each other. The rotary kiln outer cylinder is sleeved on the outside of the rotary kiln inner cylinder. The rotary kiln drive mechanism is used to drive the rotary kiln inner cylinder and the rotary kiln outer cylinder to rotate. A feeding mechanism is installed at the first end of the rotary kiln inner cylinder, and a discharging mechanism is provided at the second end of the rotary kiln outer cylinder. The feeding mechanism can feed material to the first end of the inner cylinder of the rotary kiln. A rotary kiln inner cylinder spiral blade is installed inside the inner cylinder. Rotation of the inner cylinder causes the spiral blade to transport the material to the second end of the inner cylinder and drop it to the first end of the outer cylinder. An electric heating mechanism is installed at the first end of the outer cylinder, which heats the material that has fallen to the first end of the outer cylinder to induce a reaction. A rotary kiln outer cylinder spiral blade is located between the inner wall of the outer cylinder and the outer wall of the inner cylinder. Rotation of the outer cylinder causes the spiral blade to transport the reacted material to the second end of the outer cylinder and discharge it through the feeding mechanism. The discharge cooling mechanism includes a spiral discharge cylinder with a spiral conveying blade installed inside. A cooling chamber is provided on the outer side of the spiral discharge cylinder, with an inlet and an outlet at each end. Cooling liquid can enter the cooling chamber from the inlet and exit from the outlet to cool the material inside the spiral discharge cylinder. The feeding mechanism is sealed and connected to the inlet end of the spiral discharge cylinder. A buffer chamber is provided at the outlet end of the spiral discharge cylinder, and the spiral conveying blade can transport the material to the buffer chamber for buffering. The material in the buffer chamber blocks the outlet end of the spiral discharge cylinder.
2. The high-efficiency and energy-saving roasting and drying device according to claim 1, characterized in that, The feeding mechanism includes a rotary kiln outer cylinder rotary sealing sleeve and a rotary kiln discharge hopper. The rotary kiln outer cylinder rotary sealing sleeve is installed on the rotary kiln outer cylinder, and the rotary kiln outer cylinder can rotate relative to the rotary kiln outer cylinder rotary sealing sleeve. The rotary kiln discharge hopper is installed on the lower side of the rotary kiln outer cylinder rotary sealing sleeve. The rotary kiln discharge hopper is sealed and connected to the feed end of the spiral discharge cylinder. An inert gas inlet is provided on the upper side of the rotary kiln outer cylinder rotary sealing sleeve.
3. The high-efficiency and energy-saving roasting and drying device according to claim 1, characterized in that, Multiple scrapers are spaced circumferentially on the inner wall of the inner cylinder and the inner wall of the outer cylinder of the rotary kiln. The scrapers extend axially along the inner cylinder of the rotary kiln. The rotation of the inner and outer cylinders of the rotary kiln allows the scrapers to turn over the incoming material. A mechanical rapping mechanism is installed on the outer wall of the outer cylinder of the rotary kiln. The mechanical rapping mechanism includes a hinge seat, a support rod, and a vibrating hammer. The hinge seat is installed on the outer wall of the outer cylinder of the rotary kiln. One end of the support rod is hinged to the hinge seat, and the vibrating hammer is installed on the other end of the support rod. When the outer cylinder of the rotary kiln rotates, the vibrating hammer can cause the support rod to rotate relative to the hinge seat under its own weight to strike the outer wall of the outer cylinder of the rotary kiln.
4. The high-efficiency and energy-saving roasting and drying device according to claim 3, characterized in that, One end of the support rod is hinged to the hinge seat via a hinge shaft, and the hinge shaft is parallel to the axial direction of the outer cylinder of the rotary kiln.
5. The high-efficiency and energy-saving roasting and drying device according to claim 1, characterized in that, Multiple first temperature detection components are installed at intervals along the axial direction on the outer cylinder of the rotary kiln. The first temperature detection components are used to detect the internal temperature of the outer cylinder of the rotary kiln. Multiple second temperature detection components are installed at intervals along the axial direction on the inner cylinder of the rotary kiln. The second temperature detection components are used to detect the internal temperature of the inner cylinder of the rotary kiln. At the same time, an infrared thermal radiation imaging system is set in the length direction of the rotary kiln.
6. The high-efficiency and energy-saving roasting and drying device according to claim 1, characterized in that, The outer wall of the rotary kiln outer cylinder and the outer side of the rotary kiln outer cylinder electric heating mechanism are both covered with a heat insulation layer. The rotary kiln outer cylinder electric heating mechanism is a resistance heating mechanism or an electromagnetic induction heating mechanism.
7. The high-efficiency and energy-saving roasting and drying device according to claim 1, characterized in that, The feeding mechanism includes a feeding assembly and a rotary kiln inner cylinder rotary sealing end cover. The rotary kiln inner cylinder rotary sealing end cover is located at the first end of the rotary kiln inner cylinder, and the rotary kiln inner cylinder can rotate relative to the rotary kiln inner cylinder rotary sealing end cover. The feeding assembly is connected to the rotary kiln inner cylinder rotary sealing end cover, and the material of the feeding assembly can enter the rotary kiln inner cylinder through the rotary kiln inner cylinder rotary sealing end cover.
8. The high-efficiency and energy-saving roasting and drying device according to claim 7, characterized in that, An exhaust port is provided on the upper side of the rotary sealing end cover of the inner cylinder of the rotary kiln.
9. The high-efficiency and energy-saving roasting and drying apparatus according to claim 7, characterized in that, The rotary kiln inner cylinder rotary sealing end cover and the second end face of the rotary kiln outer cylinder are equipped with observation windows.
Citation Information
Patent Citations
Solid-phase heat energy recovery energy-saving device
CN118089423A