A temperature-stable rotary kiln

Abstract

The utility model relates to kiln technical field discloses a rotary kiln of stable temperature, include: frame, cylinder, rotation connection in frame, heat dissipation cover, connect in frame, the heat dissipation cover is equipped in cylinder outside, a plurality of partition rings are arranged along the axial direction interval of heat dissipation cover in heat dissipation cover, the inboard of a plurality of partition rings is close to the outside of cylinder, forms the heat dissipation chamber between two adjacent partition rings, the exhaust pipe that is communicated at the heat dissipation chamber is provided to the outside of heat dissipation cover, blowing device has the air inlet pipe, the air inlet pipe is connected in heat dissipation chamber, the utility model will heat dissipation cover divide and form a plurality of heat dissipation chambers, can correspond to the heat dissipation demand of cylinder different temperature zone, thereby is favorable to the temperature of cylinder inside stabilization, reduces the influence of cylinder inside series temperature to production temperature, improves production quality.

Description

Technical Field

[0001] This utility model relates to the field of kiln technology, and in particular to a rotary kiln with stable temperature. Background Technology

[0002] Rotary kilns in high-temperature calcination furnaces suffer from temperature cross-contamination during operation. Since the sintering temperature profile significantly impacts product quality and even production stability, different sintering temperatures can affect product quality. Currently, in kilns with limited temperature zones, the low-temperature zone temperature is difficult to lower, while the high-temperature zone temperature rises. Some kilns have added multiple internal temperature zones, including transition zones in the middle, to mitigate the cross-contamination problem. However, this increases equipment costs and overall energy consumption. Therefore, there is an urgent need for a rotary kiln with more stable production temperatures. Utility Model Content

[0003] The purpose of this invention is to provide a rotary kiln with a stable temperature to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A rotary kiln with a stable temperature includes: a frame; a cylinder rotatably connected to the frame; a heat dissipation sleeve connected to the frame, the heat dissipation sleeve being fitted over the outer side of the cylinder, a plurality of partition rings being spaced apart along the axial direction of the heat dissipation sleeve inside the heat dissipation sleeve, the inner sides of the plurality of partition rings tending to be close to the outer side of the cylinder, a heat dissipation cavity being formed between two adjacent partition rings, an exhaust pipe communicating with the heat dissipation cavity being provided on the outer side of the heat dissipation sleeve; and an air blowing device having an air inlet pipe connected to the heat dissipation cavity.

[0006] This technical solution has at least the following beneficial effects: Material flows inside the cylinder, and a heat dissipation sleeve is fitted onto the outside of the cylinder. Multiple partition rings can be used to divide the heat dissipation sleeve axially into multiple heat dissipation chambers, each corresponding to a different part of the cylinder. During operation, heat dissipation can be targeted at different parts of the cylinder. Specifically, the air blowing device blows air through the air inlet pipe into the heat dissipation chamber corresponding to the part of the cylinder that needs heat dissipation. The airflow flows along the outside of the cylinder. Because the inner side of the partition ring tends to be closer to the outside of the cylinder, air leakage to adjacent heat dissipation chambers is reduced, allowing the airflow to specifically carry away the heat inside the corresponding part of the cylinder. Finally, the airflow is discharged outwards from the exhaust pipe. This division of the heat dissipation sleeve into multiple heat dissipation chambers can meet the heat dissipation needs of different temperature zones within the cylinder, thereby helping to stabilize the temperature inside the cylinder, reduce the impact of internal temperature cross-contamination on the production temperature, and improve production quality.

[0007] As a further improvement to the above technical solution, the heat dissipation cavity includes a first exhaust section, an air blowing section and a second exhaust section arranged sequentially along the axial direction of the heat dissipation sleeve. An air guide pipe is provided on the inner side of the air blowing section, and multiple air blowing holes are provided on the outer side of the air guide pipe corresponding to the outer side of the cylinder. The air inlet pipe is connected to the air guide pipe, and the airflow in the first exhaust section and the second exhaust section can enter the exhaust pipe.

[0008] As a further improvement to the above technical solution, a manifold is provided on the outer side of the heat dissipation sleeve, with the two ends of the manifold connected to the first exhaust section and the second exhaust section respectively, and the exhaust pipe connected to the middle of the manifold.

[0009] As a further improvement to the above technical solution, the exhaust pipe is connected to an exhaust fan.

[0010] As a further improvement to the above technical solution, the air guide pipe includes a main flow section and a branch flow section. The main flow section extends circumferentially along the heat dissipation sleeve and is connected to the air inlet pipe. Branch flow sections are connected to both sides of the main flow section, and each of the branch flow sections is provided with a plurality of air blowing holes.

[0011] As a further improvement to the above technical solution, there are multiple diversion sections located on both sides of the main flow section, and the multiple diversion sections are arranged in a mesh pattern.

[0012] As a further improvement to the above technical solution, the diversion sections located on both sides of the main flow section extend spirally around the heat dissipation sleeve.

[0013] As a further improvement to the above technical solution, there are multiple air intake pipes, and the multiple air intake pipes are respectively connected to multiple heat dissipation cavities.

[0014] As a further improvement to the above technical solution, a temperature sensor is provided on the inner side of the heat sink.

[0015] As a further improvement to the above technical solution, an adjustment valve is provided on the air intake pipe.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0020] Figure 3 yes Figure 2 A magnified view of part B.

[0021] Figure 4 This is a schematic diagram of the heat sink sleeve along the axial direction according to Embodiment 1 of this utility model.

[0022] Figure 5 This is a schematic diagram of the heat sink sleeve along the axial direction in Embodiment 2 of this utility model.

[0023] In the attached diagram: 100-frame, 200-cylinder, 300-heat dissipation sleeve, 310-separation ring, 320-exhaust pipe, 331-first exhaust section, 332-air blowing section, 333-second exhaust section, 341-main stream section, 342-branching section, 343-air blowing hole, 350-combination pipe, 410-intake pipe, 411-regulating valve. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. 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.

[0029] Reference Figures 1 to 3 A rotary kiln with stable temperature includes a frame 100, a cylinder 200, a heat dissipation sleeve 300, and an air blowing device. The cylinder 200 is rotatably connected to the frame 100. The heat dissipation sleeve 300 is connected to the frame 100 and is sleeved on the outside of the cylinder 200. Multiple partition rings 310 are spaced apart along the axial direction of the heat dissipation sleeve 300. The inner sides of the partition rings 310 tend to be closer to the outer side of the cylinder 200, and a heat dissipation cavity is formed between two adjacent partition rings 310. An exhaust pipe 320 is provided, which is connected to the heat dissipation cavity; the air blowing device has an air inlet pipe 410, which is connected to the heat dissipation cavity. In practical applications, the air blowing device is mainly used to supply air into the heat dissipation cavity through the air inlet pipe 410, thereby achieving airflow cooling. There are various structural forms. For example, the air blowing device includes an air compressor pump, which is connected to the air inlet pipe 410 to supply high-pressure air into the air inlet pipe 410, thereby providing airflow cooling to the heat dissipation cavity. Alternatively, an external air tank can be connected to the air inlet pipe 410 to supply air into the heat dissipation cavity through the air inlet pipe 410.

[0030] As described above, the material flows inside the cylinder 200, and the heat dissipation sleeve 300 is fitted onto the outside of the cylinder 200. Using multiple partition rings 310, the heat dissipation sleeve 300 can be axially divided into multiple heat dissipation chambers, which correspond to multiple parts of the cylinder 200. During operation, heat dissipation can be targeted to different parts inside the cylinder 200. Specifically, the air blowing device blows air into the heat dissipation chamber corresponding to the part of the cylinder 200 that needs heat dissipation through the air inlet pipe 410. The airflow flows along the outside of the cylinder 200. Since the inner side of the partition ring 310 tends to be close to the outside of the cylinder 200, the leakage of airflow to adjacent heat dissipation chambers can be reduced, so that the airflow can specifically carry away the heat inside the corresponding part of the cylinder 200. Finally, the airflow is discharged outward from the exhaust pipe 320. In this way, the heat dissipation sleeve 300 is divided into multiple heat dissipation chambers, which can meet the heat dissipation needs of different temperature zones of the cylinder 200, thereby helping to stabilize the temperature inside the cylinder 200, reduce the impact of internal temperature cross-contamination on the production temperature, and improve production quality.

[0031] After the air inlet pipe 410 blows air into the heat dissipation cavity, in order to increase the coverage of the airflow flowing outside the cylinder 200 and improve the heat dissipation, in this embodiment, the heat dissipation cavity includes a first exhaust section 331, an air blowing section 332 and a second exhaust section 333 arranged sequentially along the axial direction of the heat dissipation sleeve 300. An air guide pipe is provided on the inner side of the air blowing section 332, and a plurality of air blowing holes 343 are provided on the outer side of the air guide pipe corresponding to the outer side of the cylinder 200. The air inlet pipe 410 is connected to the air guide pipe, and the airflow in the first exhaust section 331 and the second exhaust section 333 can enter the exhaust pipe 320. When air needs to be blown into the heat dissipation cavity for cooling, air is supplied to the air guide pipe of the air blowing section 332 through the air inlet pipe 410. Multiple air blowing holes 343 set on the outside of the air guide pipe blow air into the outer surface of the cylinder 200 within the air blowing section 332 for cooling. At this time, the part of the cylinder 200 corresponding to the air blowing section 332 is mainly cooled by the airflow. Then, the airflow in the air blowing section 332 flows to the first exhaust section 331 and the second exhaust section 333 located on both sides. The airflow in the first exhaust section 331 and the second exhaust section 333 mainly flows along the outer surface of the cylinder 200 towards the exhaust pipe 320. At this time, the airflow mainly radiates into the first exhaust section 331 and the second exhaust section 333 on both sides, thereby carrying away the heat of the corresponding part of the cylinder 200. In this way, by forming the air blowing and diversion radiation flow in the heat dissipation cavity, the heat exchange efficiency of the airflow can be improved, thereby carrying away the heat of the outer surface of the cylinder 200 more fully and achieving stable temperature control.

[0032] To facilitate the flow of air from the first exhaust section 331 and the second exhaust section 333 into the exhaust pipe 320, in this embodiment, a manifold 350 is provided on the outer side of the heat dissipation sleeve 300. The two ends of the manifold 350 are connected to the first exhaust section 331 and the second exhaust section 333, respectively, and the exhaust pipe 320 is connected to the middle of the manifold 350. The airflow in the first exhaust section 331 flows along the outer periphery of the cylinder 200 to one end of the manifold 350, and the airflow in the second exhaust section 333 flows along the outer periphery of the cylinder 200 to the other end of the manifold 350. The two airflows converge in the middle of the manifold 350 and are finally discharged outwards from the exhaust pipe 320.

[0033] In the above embodiment, the airflow within the heat dissipation sleeve 300 is mainly supplied with positive air pressure through the air inlet pipe 410, and finally discharged outwards through the exhaust pipe 320. To improve exhaust efficiency, in this embodiment, the exhaust pipe 320 is connected to an exhaust fan. The exhaust fan can improve the exhaust capacity of the exhaust pipe 320, thereby accelerating the airflow speed within the heat dissipation cavity and improving heat dissipation efficiency.

[0034] To improve the uniformity of air coverage within the heat sink 300, in this embodiment, the air guide pipe includes a main flow section 341 and a branch flow section 342. The main flow section 341 extends circumferentially along the heat sink 300 and is connected to the air inlet pipe 410. Branch flow sections 342 are connected to both sides of the main flow section 341, and each branch flow section 342 is provided with a plurality of air blowing holes 343. The airflow input through the intake pipe 410 enters the main flow section 341. The main flow section 341, which extends circumferentially along the heat dissipation cylinder, can increase the area covered by the airflow along the circumference of the cylinder 200. The airflow flowing along the main flow section 341 can be dispersed to the branch sections 342 on both sides. The branch sections 342 increase the area covered by the airflow along the axial direction of the cylinder 200. Finally, air is blown out of the cylinder 200 from the air holes 343 of all branch sections 342. This can improve the uniformity of air blowing out of the cylinder 200 at various positions in the air blowing section 332 and help ensure the airflow intensity at multiple positions on the outside of the cylinder 200.

[0035] like Figure 4 As shown in the first embodiment of the diversion section 342, there are multiple diversion sections 342 located on both sides of the main flow section 341, and the multiple diversion sections 342 are arranged in a mesh pattern. The multiple diversion sections 342 are arranged in a mesh pattern inside the blowing section 332, which can increase the area covered by the blowing, thereby further improving the uniformity of the blowing and the airflow intensity.

[0036] like Figure 5As shown in the second embodiment of the diversion section 342, the diversion section 342, located on both sides of the main flow section 341, extends spirally around the heat dissipation sleeve 300. The spirally extended diversion section 342 can extend the path of airflow within the blowing section 332, thereby increasing the area covered by the blowing air and further improving the uniformity and intensity of the blowing air.

[0037] In the above embodiment, airflow can be supplied to multiple heat dissipation chambers simultaneously through a single air inlet pipe 410 for cooling. However, to more flexibly and accurately adjust the airflow cooling effect of different heat dissipation chambers, this embodiment uses multiple air inlet pipes 410, each connected to one of the heat dissipation chambers. The air blowing device can independently supply air to the multiple air inlet pipes 410, thereby reducing airflow cooling interference between different heat dissipation chambers and improving the flexibility of independent temperature control for different temperature zones. In practical applications, the air blowing device can also have multiple air sources supplying air to the multiple air inlet pipes 410. For example, the air blowing device can be equipped with multiple air compressor pumps, which independently supply air to the multiple heat dissipation chambers through multiple air inlet pipes 410.

[0038] In some embodiments, a temperature sensor is provided inside the heat dissipation sleeve 300. The temperature sensor allows for convenient detection of the temperature inside the cylinder 200, enabling flexible adjustment of the intake temperature control as needed. In practical applications, temperature sensors can be installed at different temperatures within the cylinder 200 for targeted monitoring and measurement of different temperatures.

[0039] To improve the flexibility of air intake adjustment, in this embodiment, an adjusting valve 411 is provided on the air intake pipe 410. The adjusting valve 411 allows for more flexible and precise adjustment of the air supply from the air intake pipe 410 to the heat dissipation cavity, better meeting different usage needs.

[0040] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A rotary kiln with a stable temperature, characterized in that: include: Rack (100); The cylinder (200) is rotatably connected to the frame (100); A heat dissipation sleeve (300) is connected to the frame (100). The heat dissipation sleeve (300) is sleeved on the outside of the cylinder (200). Multiple partition rings (310) are spaced apart along the axial direction of the heat dissipation sleeve (300). The inner sides of the multiple partition rings (310) tend to be close to the outside of the cylinder (200). A heat dissipation cavity is formed between two adjacent partition rings (310). An exhaust pipe (320) communicating with the heat dissipation cavity is provided on the outside of the heat dissipation sleeve (300). The air blowing device has an air inlet pipe (410) connected to the heat dissipation cavity.

2. The rotary kiln with a stable temperature according to claim 1, characterized in that: The heat dissipation cavity includes a first exhaust section (331), an air blowing section (332), and a second exhaust section (333) arranged sequentially along the axial direction of the heat dissipation sleeve (300). An air guide pipe is provided on the inner side of the air blowing section (332), and multiple air blowing holes (343) are provided on the outer side of the air guide pipe corresponding to the outer side of the cylinder (200). The air inlet pipe (410) is connected to the air guide pipe, and the airflow in the first exhaust section (331) and the second exhaust section (333) can enter the exhaust pipe (320).

3. A rotary kiln with a stable temperature according to claim 2, characterized in that: A manifold (350) is provided on the outside of the heat dissipation sleeve (300). The two ends of the manifold (350) are respectively connected to the first exhaust section (331) and the second exhaust section (333). The exhaust pipe (320) is connected to the middle part of the manifold (350).

4. A rotary kiln with a stable temperature according to claim 3, characterized in that: The exhaust pipe (320) is connected to an exhaust fan.

5. A rotary kiln with a stable temperature according to claim 2, characterized in that: The air duct includes a main flow section (341) and a branch flow section (342). The main flow section (341) extends circumferentially along the heat dissipation sleeve (300) and is connected to the air inlet pipe (410). Branch flow sections (342) are connected to both sides of the main flow section (341), and each branch flow section (342) is provided with a plurality of air blowing holes (343).

6. A rotary kiln with a stable temperature according to claim 5, characterized in that: There are multiple diversion sections (342) located on both sides of the main flow section (341), and the multiple diversion sections (342) are arranged in a mesh.

7. A rotary kiln with a stable temperature according to claim 5, characterized in that: The branch sections (342) located on both sides of the main flow section (341) extend spirally around the heat sink (300).

8. A rotary kiln with a stable temperature according to claim 1, characterized in that: There are multiple air intake pipes (410), and the multiple air intake pipes (410) are respectively connected to multiple heat dissipation cavities.

9. A rotary kiln with a stable temperature according to claim 1, characterized in that: A temperature sensor is provided on the inside of the heat sink (300).

10. A rotary kiln with a stable temperature according to claim 1, characterized in that: An adjusting valve (411) is provided on the air intake pipe (410).

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