Rotary kiln capable of controlling discharging temperature

Abstract

The utility model relates to the field of rotary kiln structures, and discloses a rotary kiln capable of controlling discharge temperature, which comprises a rotary kiln body, a heating device and a cooling device, and the heating device and the cooling device are arranged at an interval; the heating device is arranged on the rotary kiln body in a sleeving manner and is used for heating materials in the rotary kiln body; the cooling device comprises a cooling shell and a nitrogen cooling device; the rotary kiln body is sleeved with the cooling shell, a cooling cavity is formed between the cooling shell and the rotary kiln body, the nitrogen cooling device communicates with the cooling cavity, and an air outlet hole communicating with the cooling cavity is formed in the end, close to the heating device, of the cooling shell. And the flow of nitrogen input into the cooling cavity by the nitrogen cooling device is adjustable. According to the rotary kiln capable of controlling the discharging temperature, the discharging temperature of materials can be better controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary kiln structure field especially relates to a controllable discharge temperature's rotary kiln. BACKGROUND

[0002] Rotary kiln is important heat equipment in industrial production.

[0003] Rotary kiln can be used for drying material, and the material is gradually dried along the rotary kiln body, and finally flows out along the tail end of the rotary kiln body, so that the dried material is obtained. But the rotary kiln in the above drying process, the material temperature is higher, so the rotary kiln body needs to be set relatively long, so that the temperature of the material after discharging is controlled, that is, the existing rotary kiln is difficult to control the final discharge temperature of the material, which is not conducive to rapid production.

[0004] Therefore, it is necessary to design a controllable discharge temperature rotary kiln that can better control the discharge temperature of the material.

[0005] The above information is given as background information only to assist with understanding the present disclosure, and does not constitute admission or recognition that any of the above information constitutes prior art with respect to the present disclosure. SUMMARY

[0006] The utility model provides a controllable discharge temperature's rotary kiln can better control the discharge temperature of the material.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A controllable discharge temperature rotary kiln, comprising a rotary kiln body, a heating device and a cooling device, the heating device and the cooling device are arranged at intervals.

[0009] The heating device is sleeved on the rotary kiln body, and is used for heating the material in the rotary kiln body.

[0010] The cooling device comprises a cooling shell and a nitrogen cooling device, the cooling shell is sleeved on the rotary kiln body, and a cooling cavity is formed between the cooling shell and the rotary kiln body, the nitrogen cooling device communicates with the cooling cavity, and one end of the cooling shell close to the heating device is provided with an exhaust hole communicating with the cooling cavity, and the nitrogen flow of the nitrogen cooling device input into the cooling cavity is adjustable.

[0011] Optionally, the nitrogen cooling device is connected with an exhaust pipe.

[0012] The cooling shell is provided with an air inlet hole away from the heating device, and the exhaust pipe communicates with the cooling cavity through the air inlet hole.

[0013] Optionally, the cooling shell is sleeved on the rotary kiln body, so that the cooling cavity constitutes a sealed cavity.

[0014] An annular heat insulation part is mounted on the rotary kiln body, a sealing ring body is sleeved on the annular heat insulation part, the sealing ring body forms an annular sealing groove, and one end of the cooling shell has an extension part extending into the annular sealing groove.

[0015] Optionally, the annular sealing groove is provided with an annular groove on each of opposite sidewalls, and a sealing ring for abutting against the extension part is mounted in the annular groove.

[0016] Optionally, the rotary kiln with controllable discharging temperature further comprises a temperature detector, which is used for detecting the temperature of nitrogen gas flowing out of the gas outlet.

[0017] The temperature detector is electrically connected to the nitrogen gas cooling device.

[0018] Optionally, the rotary kiln with controllable discharging temperature further comprises an industrial computer, which is electrically connected to the temperature detector and the nitrogen gas cooling device respectively.

[0019] Optionally, the tail end of the rotary kiln body is connected with a discharging pipe, and an infrared temperature detector for detecting the temperature of materials is mounted in the discharging pipe.

[0020] The infrared temperature detector is electrically connected to the industrial computer.

[0021] Optionally, the rotary kiln with controllable discharging temperature further comprises a nitrogen gas recovery device, a gas collecting pipe and a material blowing pipe.

[0022] The gas collecting pipe and the material blowing pipe are respectively connected to the nitrogen gas recovery device, and the material blowing pipe extends out of a gas outlet for blowing gas to the kiln opening of the rotary kiln body.

[0023] Optionally, a heating wire assembly is further included, which is used for heating nitrogen gas passing through the material blowing pipe.

[0024] The heating wire assembly is sleeved on the material blowing pipe, and the heating wire assembly is electrically connected to the industrial computer.

[0025] Optionally, a rotary driving device is further included for driving the rotary kiln body to rotate.

[0026] The rotary kiln body is arranged in an inclined manner, and the height of the heating device is greater than the height of the cooling shell.

[0027] Compared with the prior art, the rotary kiln with controllable discharging temperature has the following beneficial effects:

[0028] The rotary kiln with controllable discharging temperature has the cooling device, the cooling shell and the nitrogen cooling device, the cooling shell is sleeved on the rotary kiln body to form a cooling cavity, the nitrogen cooling device can input low-temperature nitrogen into the cooling cavity, the temperature of the material gradually decreases after the material passes through the cylinder section of the rotary kiln body cooled by the cooling device, the nitrogen flow input into the cooling cavity by the nitrogen cooling device is adjustable, so that the drying needs of different materials can be adapted, and the purpose of controlling the discharging temperature of different materials is achieved.

[0029] The present application has other characteristics and advantages, which will be apparent from and / or set forth in the accompanying drawings and the detailed description that follows, as well as being used to explain the specific principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is a top view schematic diagram of the rotary kiln with controllable discharging temperature provided by the present application;

[0032] Figure 2 is Figure 1 is an enlarged schematic diagram of the rotary kiln with controllable discharging temperature in A in the present application;

[0033] Figure 3 is Figure 2 is an enlarged schematic diagram of the rotary kiln with controllable discharging temperature in B in the present application.

[0034] Signs: 1, rotary kiln body; 11, annular heat insulation part; 12, sealing ring body; 121, annular sealing groove; 1201, annular groove; 1202, sealing ring; 2, heating device; 3, cooling device; 31, cooling shell; 32, nitrogen cooling device; 33, cooling cavity; 34, gas outlet pipe; 4, temperature detector; 5, industrial computer; 6, discharging pipe; 71, nitrogen recovery device; 72, gas collecting pipe; 72, blowing material gas pipe; 8, heating wire assembly; 9, rotary driving device. DETAILED DESCRIPTION

[0035] To explain possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects of the present application in detail, the following embodiments are described in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0036] In this paper, the term "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0037] Unless otherwise defined, the meaning of the technical terms used herein is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms herein is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0038] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this paper generally represents that the associated objects before and after are a "or" logical relationship.

[0039] In the present application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0040] In the present application, without more limitation, the "includes", "contains", "has" or other similar expressions used in the sentence are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0041] As the same understanding in the "Examination Guidelines", in the present application, "greater than", "less than", "exceed" and the like are understood as not including the number; "above", "below", "within" and the like are understood as including the number. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is two or more (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly and specifically limited.

[0042] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0043] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set" and the like should be broadly understood. For example, the "connection" can be fixed connection, or detachable connection, or integrated setting; it can be mechanical connection, or electrical connection, or communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] In view of the defects of the existing rotary kiln, the applicant, based on many years of rich practical experience and professional knowledge in designing and manufacturing such products, and with the use of theory, actively researches and innovates, in the hope of creating a technology that can solve the defects in the prior art and improve the practicality. After continuous research, design, and repeated trial of samples and improvement, the present utility model is finally created, which has practical value.

[0045] Please refer to Figures 1 to 3 The embodiment of the present application provides a rotary kiln capable of controlling discharge temperature, which comprises a rotary kiln body 1, a heating device 2 and a cooling device 3. The material is loaded into the rotary kiln body 1 and heated by the heating device 2. The heating device 2 and the cooling device 3 are arranged at intervals, and the material gradually moves to the cooling device 3. The rotary kiln body 1 is in a hollow tubular structure, and the two ends are closed.

[0046] The heating device 2 is sleeved on the rotary kiln body 1 and used for heating the material in the rotary kiln body 1; wherein the material is a powder with large volume and light weight, and the material can move forward under the blowing of nitrogen. The cooling device 3 comprises a cooling shell 31 and a nitrogen cooling device 32; the cooling shell 31 is sleeved on the rotary kiln body 1, and a cooling cavity 33 is formed between the cooling shell 31 and the rotary kiln body 1, the nitrogen cooling device 32 is communicated with the cooling cavity 33, and the cooling shell 31 is provided with an air outlet hole communicated with the cooling cavity 33 at one end close to the heating device 2.

[0047] In the embodiment, the cooling shell 31 is sleeved on the rotary kiln body 1 to form the cooling cavity 33, the nitrogen cooling device 32 can input low-temperature nitrogen into the cooling cavity 33, and the temperature of the material gradually decreases after passing through the cylinder section of the rotary kiln body 1 cooled by the cooling device 3; since the nitrogen flow input into the cooling cavity 33 by the nitrogen cooling device 32 is adjustable, the cooling speed of the rotary kiln body 1 can be adjusted, which is equivalent to indirectly adjusting the cooling rate of the material, so that the discharging needs of different materials can be adapted, that is, the purpose of controlling the discharging temperature of different materials is achieved.

[0048] Optionally, the nitrogen cooling device 32 is connected with an air outlet pipe 34; the cooling shell 31 is provided with an air inlet hole at one end away from the heating device 2, and the air outlet pipe 34 is communicated with the cooling cavity 33 through the air inlet hole.

[0049] It should be noted that the nitrogen cooling device 32 can output nitrogen at a set temperature, and the nitrogen is introduced into the cooling cavity 3 through the air outlet pipe 34. The nitrogen cooling device 32 is a mature device on the market, and therefore the specific structure is not introduced.

[0050] Optionally, the cooling shell 31 is sealingly sleeved on the rotary kiln body 1, so that the cooling cavity 33 constitutes a sealed cavity; the rotary kiln body 1 is provided with an annular heat insulation part 11, the annular heat insulation part 11 is sealingly sleeved with a sealing ring body 12, the sealing ring body 12 forms an annular sealing groove 121, and one end of the cooling shell 31 has an extension part extending into the annular sealing groove 121.

[0051] On the one hand, the cooling cavity 33 constitutes a sealed cavity, which can avoid nitrogen leakage and reduce the gas consumption; on the other hand, the annular heat insulation part 11 and the sealing ring body 12 are provided, which can avoid that the high temperature is directly transmitted into the cooling shell 31, so that the sealing effect between the cooling shell 31 and the sealing ring body 12 is better.

[0052] Optionally, the two opposite side walls of the annular sealing groove 121 are provided with annular grooves 1201, and sealing rings 1202 for abutting against the extension are installed in the annular grooves 1201. It should be further pointed out that the annular heat insulation part 11 and the sealing ring body 12 can reduce the influence of high temperature on the sealing ring 1202, better maintain the sealing performance of the sealing ring 1202, reduce the possibility of gas leakage, and prolong the service life of the sealing ring 1202. It should be further pointed out that the two opposite side walls of the extension respectively contact one sealing ring 1202. It should be further pointed out that the end face of the extension is an arc face, so as to avoid the loss of the sealing ring 1202 during the insertion into the annular sealing groove 121.

[0053] Optionally, the rotary kiln with controllable discharging temperature further comprises a temperature detector 4, which is used for detecting the temperature of the nitrogen gas flowing out of the gas outlet; the temperature detector 4 is electrically connected with the nitrogen gas cooling device 32. Optionally, the rotary kiln with controllable discharging temperature further comprises an industrial computer 5, which is electrically connected with the temperature detector 4 and the nitrogen gas cooling device 32 respectively.

[0054] Specifically, the nitrogen gas cooling device 32 can adjust the flow of the nitrogen gas according to the temperature of the nitrogen gas detected by the temperature detector 4, so as to ensure that the discharging temperature of the material is basically stable.

[0055] Optionally, the tail end of the rotary kiln body 1 is connected with a discharging pipe 6, and an infrared temperature detector for detecting the temperature of the dried material is installed in the discharging pipe 6; the infrared temperature detector is electrically connected with the industrial computer 5. Specifically, a set temperature range is set in the industrial computer 5, when the discharging temperature of the material is greater than the set temperature range, the flow of the nitrogen gas is increased, so as to reduce the discharging temperature of the material; when the discharging temperature of the material is less than the set temperature range, the flow of the nitrogen gas is reduced, so as to increase the discharging temperature of the material, so as to keep the discharging temperature of the material stable and improve the production yield.

[0056] Optionally, the rotary kiln with controllable discharging temperature further comprises a nitrogen gas recovery device 71, a gas collecting pipe 72 and a material blowing pipe 73; the gas collecting pipe 72 and the material blowing pipe 73 are respectively communicated with the nitrogen gas recovery device 71, and the material blowing pipe 73 extends out of a gas outlet for blowing gas to the kiln opening of the rotary kiln body 1.

[0057] Specifically, the nitrogen gas recovery device 71 recovers the nitrogen gas flowing out of the gas outlet, and blows the nitrogen gas into the rotary kiln body 1 through the material blowing pipe 73, so as to blow the material to flow. It should be pointed out that the nitrogen gas blown into the rotary kiln body 1 has a temperature difference of less than 30℃ with the nitrogen gas in the rotary kiln body 1.

[0058] Optionally, the rotary kiln with controllable discharging temperature further comprises a heating wire assembly 8 for heating nitrogen gas passing through the blowing pipe 73, and the heating wire assembly 8 is sleeved on the blowing pipe 73. The heating wire assembly 8 heats the nitrogen gas, so that the temperature of the gas blown into the rotary kiln body 1 is kept at a proper temperature, avoiding affecting the temperature in the rotary kiln body 1.

[0059] Optionally, the rotary kiln with controllable discharging temperature further comprises a rotary driving device 9 for driving the rotary kiln body 1 to rotate; the rotary kiln body 1 is arranged in an inclined manner, and the height of the heating device 2 is greater than the height of the cooling shell 31. The rotary kiln body 1 is arranged in an inclined manner, so that the dried material is more easily moved to the discharging pipe 6 under the blowing of nitrogen gas.

[0060] Finally, it should be noted that, although the above-mentioned embodiments have been described in the specification and drawings of the present application, the patent protection scope of the present application should not be limited. Any technical solution obtained by replacing or modifying the equivalent structure or equivalent process based on the essential concept of the present application, using the content described in the specification and drawings of the present application, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A rotary kiln with controllable discharge temperature, characterized in that, It comprises a rotary kiln body (1), a heating device (2) and a cooling device (3), the heating device (2) and the cooling device (3) are arranged at intervals; The heating device (2) is sleeved on the rotary kiln body (1) and used for heating the material in the rotary kiln body (1); The cooling device (3) comprises a cooling shell (31) and a nitrogen cooling device (32); the cooling shell (31) is sleeved on the rotary kiln body (1), and a cooling cavity (33) is formed between the cooling shell (31) and the rotary kiln body (1); the nitrogen cooling device (32) is communicated with the cooling cavity (33), and the cooling shell (31) is provided with an air outlet hole communicated with the cooling cavity (33) at one end close to the heating device (2); and the nitrogen flow input into the cooling cavity (33) by the nitrogen cooling device (32) is adjustable.

2. A controllable discharge temperature rotary kiln according to claim 1, characterised in that, The nitrogen cooling device (32) is connected with an air outlet pipe (34); The cooling shell (31) is provided with an air inlet hole at one end away from the heating device (2), and the air outlet pipe (34) is communicated with the cooling cavity (33) through the air inlet hole.

3. A controllable discharge temperature rotary kiln according to claim 1, wherein, The cooling shell (31) is tightly sleeved on the rotary kiln body (1), so that the cooling cavity (33) forms a sealed cavity; An annular heat insulation part (11) is installed on the rotary kiln body (1), a sealing ring body (12) is tightly sleeved on the annular heat insulation part (11), the sealing ring body (12) forms an annular sealing groove (121), and one end of the cooling shell (31) has an extension part extending into the annular sealing groove (121).

4. A controllable discharge temperature rotary kiln according to claim 3, characterised in that, Opposite two side walls of the annular sealing groove (121) are provided with annular grooves (1201), and sealing rings (1202) for abutting against the extension part are installed in the annular grooves (1201).

5. A controllable discharge temperature rotary kiln according to claim 3, wherein, A temperature detector (4) is further arranged, and the temperature detector (4) is used for detecting the temperature of the nitrogen gas flowing out of the air outlet hole; The temperature detector (4) is electrically connected with the nitrogen cooling device (32).

6. A controllable discharge temperature rotary kiln according to claim 5, characterised in that, An industrial computer (5) is further arranged, and the industrial computer (5) is electrically connected with the temperature detector (4) and the nitrogen cooling device (32) respectively.

7. A controllable discharge temperature rotary kiln according to claim 6, characterised in that, An outlet pipe (6) is connected to the tail end of the rotary kiln body (1), and an infrared temperature detector is installed in the outlet pipe (6) and used for detecting the temperature of the material; The infrared temperature detector is electrically connected with the industrial computer (5).

8. A controllable discharge temperature rotary kiln according to claim 1, wherein, A nitrogen gas recovery device (71), a gas collecting pipe (72) and a material blowing pipe (73) are further arranged; The gas collecting pipe (72) and the material blowing pipe (73) are communicated with the nitrogen gas recovery device (71) respectively, and the material blowing pipe (73) extends out of an air outlet for blowing gas to the kiln opening of the rotary kiln body (1).

9. A controllable discharge temperature rotary kiln according to claim 8, characterised in that, A heating wire assembly (8) is further arranged, and the heating wire assembly (8) is used for heating the nitrogen gas passing through the material blowing pipe (73); The heating wire assembly (8) is sleeved on the material blowing pipe (73).

10. A controllable discharge temperature rotary kiln according to claim 1, wherein, A rotary driving device (9) is further arranged for driving the rotary kiln body (1) to rotate; The rotary kiln body (1) is arranged in an inclined manner, and the height of the heating device (2) is greater than the height of the cooling shell (31).

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