CN210165739U - Internal and external heat combined rotary kiln - Google Patents
Internal and external heat combined rotary kiln Download PDFInfo
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- CN210165739U CN210165739U CN201920930777.6U CN201920930777U CN210165739U CN 210165739 U CN210165739 U CN 210165739U CN 201920930777 U CN201920930777 U CN 201920930777U CN 210165739 U CN210165739 U CN 210165739U
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Abstract
The utility model discloses an interior external heat combination formula rotary kiln, rotary kiln barrel including the slope setting, the rotary kiln barrel is connected with supporting device and drive arrangement, both ends at the rotary kiln barrel are equipped with feeding cover and ejection of compact cover respectively, the feeding cover is higher than ejection of compact cover, the feeding covers and is equipped with feed inlet and first tail gas export, the ejection of compact cover is equipped with the discharge gate and is equipped with first heating device, first heating device is linked together with the inside cavity of rotary kiln barrel, the cover is equipped with one set of furnace body at least on the rotary kiln barrel, be equipped with second heating device and second tail gas export on the furnace body, be equipped with the distributing plate on the rotary kiln barrel inner wall that is covered by the furnace body, be equipped with the lifting blade on the rotary kiln. The utility model discloses an interior hot section and outer hot section carry out the combination and use, according to the different demands in each stage of material, adopt suitable heat transfer mode, guarantee that the performance and the thermal efficiency isoparametric of material reach the optimum.
Description
Technical Field
The utility model relates to a rotary kiln technical field, concretely relates to inside and outside hot combination formula rotary kiln.
Background
The rotary kiln can be divided into an indirect external heating type and a direct internal heating type according to different heating modes of materials in the kiln.
From industrial practice we have found that most materials vary in their state and their heat transfer requirements at different stages in the pyrolysis, calcination, heating, etc. Some materials need to be slowly heated in the early stage, the state of the materials is as close to static as possible, when the materials reach a certain time and a certain temperature is reached, the materials need to be rapidly heated, and external force is needed to stir mixed materials. Some materials need to be heated up quickly in the early stage, and when the materials reach a certain time and reach a certain temperature, the materials need to enter a relatively static state, and need to be heated up slowly and kept at the certain temperature for a certain time. Therefore, the traditional external heating rotary kiln or internal heating rotary kiln can not meet the actual requirements and can not reach the product indexes.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, an internal and external heat combined rotary kiln is provided.
The utility model provides a technical scheme that its technical problem adopted is:
an internal and external heat combined rotary kiln comprises a rotary kiln cylinder body which is obliquely arranged, wherein a feeding end and a discharging end are respectively arranged at two ends of the rotary kiln cylinder body, wherein the feeding end is higher than the discharging end, the feeding end is provided with a feeding cover, the discharging end is provided with a discharging cover, a bearing device is arranged below the rotary kiln cylinder, the rotary kiln cylinder is also connected with a driving device, at least one set of furnace body is sleeved on the rotary kiln cylinder, a heating cavity is formed between the inner wall of the furnace body and the outer wall of the rotary kiln cylinder, the furnace body is provided with a second heating device and a second tail gas outlet, the rotary kiln cylinder is provided with a first heating device, the first heating device is communicated with a cavity in the rotary kiln cylinder, the inner wall of the rotary kiln cylinder covered by the furnace body is provided with a material distribution plate, and the inner wall of the rotary kiln cylinder not covered by the furnace body is provided with a material lifting plate.
Preferably, the first heating device is arranged on the discharging cover, a feeding hole and a first tail gas outlet are formed in the feeding cover, and a discharging hole is formed in the discharging cover.
Preferably, the first heating device is arranged on the feeding cover, a feeding hole is further formed in the feeding cover, and a discharging hole and a first tail gas outlet are formed in the discharging cover.
Preferably, the driving device comprises a large gear ring, the large gear ring is fixedly sleeved on the rotary kiln cylinder, the large gear ring is meshed with a transmission gear, and the transmission gear is connected with a motor.
Preferably, the supporting device is provided with two sets and is respectively arranged at two ends of the rotary kiln cylinder, the supporting device comprises a rolling ring, the rolling ring is fixedly sleeved on the rotary kiln cylinder, supporting wheels are arranged below the rolling ring in a matched mode, and the supporting wheels are abutted against the rolling ring.
Preferably, the first heating device and the second heating device are devices or burners through which high-temperature flue gas media are introduced.
Preferably, the feed inlet is obliquely arranged on the feed cover.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts a proper heat transfer mode to ensure that the performance of the material, the thermal efficiency and other parameters reach the optimum by arranging the furnace body on the rotary kiln cylinder according to different requirements of each stage of the material;
2. the utility model has the advantages that the material distributing plate is arranged, so that the material is uniformly distributed at the bottom of the rotary kiln cylinder body to form a material layer with a certain thickness, the material is contacted with the kiln body as much as possible, the contact area is increased, more heat can be conducted, and the material can be slowly heated;
3. the utility model discloses a set up the lifting blade, the lifting blade makes the material lift to a take the altitude, later raises the material and spills, makes the material distribute as far as possible at whole rotary kiln barrel, carries out violent heat transfer with the hot flue gas that passes through in the rotary kiln barrel, stirs the mixing material, makes the material sharply heat up.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural view of the middle cloth plate of the present invention.
Fig. 3 is the utility model discloses well lifting blade structure sketch map.
Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
Description of reference numerals:
1, a rotary kiln cylinder body; 2, a furnace body; 3 a feeding cover; 4, a feeding hole; 5 a first tail gas outlet; 6, a discharging cover; 7, discharging a material outlet; 8 a first heating device; 9 a second tail gas outlet; 10, rolling a ring; 11, a riding wheel; 12 big gear rings; 13 a transmission gear; 14 motor; 15 cloth plates; 16 heating the cavity; 17 material raising plate, 18 second heating device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Example one
As shown in fig. 1-3, the internal and external heat combined rotary kiln provided in this embodiment includes a rotary kiln cylinder 1 disposed obliquely, a supporting device is disposed below the rotary kiln cylinder 1, and further, two sets of supporting devices are disposed at two ends of the rotary kiln cylinder 1 respectively, each supporting device includes a rolling ring 10, the rolling ring 10 is fixedly sleeved on the rotary kiln cylinder 1, a supporting wheel 11 is disposed below the rolling ring 10 in a matching manner, and the supporting wheel 11 abuts against the rolling ring 10.
The rotary kiln cylinder 1 is further connected with a driving device, the driving device comprises a large gear ring 12, the large gear ring 12 is fixedly sleeved on the rotary kiln cylinder 1, the large gear ring 12 is meshed with a transmission gear 13, and the transmission gear 13 is connected with a motor 14.
A feeding end and a discharging end are respectively arranged at two ends of the rotary kiln barrel body 1, wherein the feeding end is provided with a feeding cover 3, the discharging end is provided with a discharging cover 6, furthermore, the feeding cover 3 is higher than the discharging cover 6, the feeding cover 3 is provided with a feeding hole 4 and a first tail gas outlet 5, and the feeding hole 4 is obliquely arranged on the feeding cover 3, so that materials can conveniently enter the rotary kiln barrel body 1; the discharge cover 6 is provided with a discharge hole 7 and a first heating device 8, the first heating device 8 is communicated with the cavity inside the rotary kiln barrel 1, specifically, the first heating device 8 is a device which is communicated with a high-temperature smoke medium or a burner, and the high-temperature smoke or the burner arranged on the discharge cover 6 is used for burning fossil fuel to generate smoke to directly heat materials in the rotary kiln barrel 1, so that the materials and the high-temperature smoke are directly contacted to transfer heat; the rotary kiln barrel 1 can be sleeved with a set of furnace body 2, the position of the furnace body 2 is arranged at a position close to a feeding end, a heating cavity 16 is formed between the inner wall of the furnace body 2 and the outer wall of the rotary kiln barrel 1, a second heating device 18 is arranged on the furnace body 2, a second tail gas outlet 9 is also arranged on the furnace body 2, a material distribution plate 15 is arranged on the inner wall of the rotary kiln barrel 1 covered by the furnace body 2, the material distribution plate 15 enables the material to be uniformly distributed at the bottom of the rotary kiln barrel 1 to form a material layer with a certain thickness, the material is enabled to be contacted with the rotary kiln barrel 1 as much as possible, the contact area is increased; the inner wall of the rotary kiln barrel body 1 which is not covered by the furnace body 2 is provided with a material lifting plate 17, the material lifting plate 17 lifts the material to a certain height, then the material is lifted and scattered, the material is distributed in the whole rotary kiln barrel body 1 as far as possible, the material and hot smoke passing through the rotary kiln barrel body 1 are subjected to violent heat transfer, the mixed material is stirred, and the temperature of the material is rapidly raised.
The specific heating process of the internal and external heat combined rotary kiln provided in the implementation is as follows:
starting a first heating device 8 on the discharge cover 6 and a second heating device 18 on the furnace body 2, feeding materials into the rotary kiln cylinder body 1 from the feed port 4, and moving the materials slowly towards the discharge port 7 along with the rotation of the rotary kiln cylinder body 1;
in the moving process of the materials, the materials enter the area where the distributing plate 15 is located, and along with the rotation of the rotary kiln barrel 1, the distributing plate 15 uniformly distributes the materials at the bottom of the rotary kiln barrel 1 to form a material layer with a certain thickness, so that the materials are contacted with the rotary kiln barrel 1 as much as possible, the contact area is increased, more heat is conducted through the rotary kiln barrel 1, and the materials are slowly heated;
after the material is heated in the area where the distributing plate 15 is located, the material enters the area where the lifting plate 17 is located, the lifting plate 17 lifts the material to a certain height along with the rotation of the rotary kiln cylinder 1, and then the material is lifted and scattered to be fully distributed on the whole rotary kiln cylinder 1 and to be subjected to violent heat transfer with hot flue gas generated by the first heating device 8 and passing through the rotary kiln cylinder 1;
the materials are continuously heated along with the movement of the materials along the axial direction of the rotary kiln cylinder body and are finally discharged through the discharge hole 7.
Example two
As shown in fig. 2-4, the rest of the structure forms are the same as the first embodiment, except that in this embodiment, the number of the furnace bodies 2 is also one set, the furnace bodies 2 are arranged near the discharge end, the feed inlet 4 and the first heating device 8 are arranged on the feed cover 3, and the discharge outlet 7 and the first exhaust gas outlet 5 are arranged on the discharge cover 6.
The specific heating process of the internal and external heat combined rotary kiln provided in the implementation is as follows:
starting a first heating device 8 on the discharge cover 6 and a second heating device 18 on the furnace body 2, feeding materials into the rotary kiln cylinder body 1 from the feed port 4, and moving the materials slowly towards the discharge port 4 along with the rotation of the rotary kiln cylinder body 1;
in the moving process of the materials, the materials enter the area where the material lifting plate 17 is located, the material lifting plate 17 lifts the materials to a certain height along with the rotation of the rotary kiln cylinder 1, then the materials are lifted and scattered, so that the materials are fully distributed on the whole rotary kiln cylinder 1 and are subjected to violent heat transfer with hot flue gas which passes through the rotary kiln cylinder 1 and is generated by the first heating device 8;
after the material is heated in the area where the material lifting plate 17 is located, the material enters the area where the material distribution plate 15 is located, the material distribution plate 15 uniformly distributes the material at the bottom of the rotary kiln barrel 1 along with the rotation of the rotary kiln barrel 1 to form a material layer with a certain thickness, so that the material is in contact with the rotary kiln barrel 1 as much as possible, the contact area is increased, more heat is conducted through the rotary kiln barrel 1, and the material is slowly heated;
the materials continuously move along the axial direction of the rotary kiln barrel body 1, are continuously heated and are finally discharged through the discharge hole 7.
EXAMPLE III
The other structural forms are the same as the first embodiment and the second embodiment, and the difference is that the number of the furnace bodies 2 can be provided with two sets, so that the rotary kiln cylinder is divided into 3 sections, the rotary kiln cylinder is in a combined form of external heating, internal heating and external heating, and according to different requirements of materials in various stages, a proper heat transfer mode is adopted, so that the performance, the heat efficiency and other parameters of the materials are ensured to be optimal.
The utility model discloses a theory of operation: the material gets into rotary kiln barrel 1 from the feed inlet in, along with the rotation of rotary kiln barrel 1, the material slowly moves to discharge gate 7 direction, in the removal process, distributing plate 15 is with material evenly distributed in rotary kiln barrel 1 bottom, form the bed of material of certain thickness, make the material contact with rotary kiln barrel 1 as much as possible, increase area of contact, conduct more heats through rotary kiln barrel 1, make the material slowly heat up, material lifting to a take the altitude is carried out to the material to material lifting plate 17, later raise the material and spill, make the material fully distributed on whole rotary kiln barrel 1, carry out violent heat transfer with the hot flue gas that produces by first heating device 8 in rotary kiln barrel 1, the material is finally discharged through discharge gate 7.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An internal and external heat combined rotary kiln comprises a rotary kiln cylinder body which is obliquely arranged, wherein a feeding end and a discharging end are respectively arranged at two ends of the rotary kiln cylinder body, wherein the feeding end is higher than the discharging end, the feeding end is provided with a feeding cover, the discharging end is provided with a discharging cover, a bearing device is arranged below the rotary kiln cylinder, the rotary kiln cylinder is also connected with a driving device, it is characterized in that at least one set of furnace body is sleeved on the rotary kiln cylinder, a heating cavity is formed between the inner wall of the furnace body and the outer wall of the rotary kiln cylinder, the furnace body is provided with a second heating device and a second tail gas outlet, the rotary kiln cylinder is provided with a first heating device, the first heating device is communicated with a cavity in the rotary kiln cylinder, the inner wall of the rotary kiln cylinder covered by the furnace body is provided with a material distribution plate, and the inner wall of the rotary kiln cylinder not covered by the furnace body is provided with a material lifting plate.
2. The internal and external heat combined rotary kiln as claimed in claim 1, wherein the first heating device is disposed on the discharging cover, the feeding cover is provided with a feeding port and a first tail gas outlet, and the discharging cover is further provided with a discharging port.
3. The internal and external heat combined rotary kiln as claimed in claim 1, wherein the first heating device is disposed on the feeding cover, the feeding cover is further provided with a feeding hole, and the discharging cover is provided with a discharging hole and a first tail gas outlet.
4. The internal and external heat combined rotary kiln as claimed in claim 1, wherein the driving device comprises a large gear ring which is fixedly sleeved on the rotary kiln cylinder, the large gear ring is engaged with a transmission gear, and the transmission gear is connected with a motor.
5. The internal and external heat combined rotary kiln as claimed in claim 1, wherein the supporting device comprises two sets of supporting devices and is respectively arranged at two ends of the rotary kiln cylinder, the supporting device comprises a rolling ring, the rolling ring is fixedly sleeved on the rotary kiln cylinder, supporting wheels are arranged below the rolling ring in a matching manner, and the supporting wheels are abutted against the rolling ring.
6. The combined rotary kiln as claimed in claim 1, wherein the first heating device and the second heating device are devices or burners through which high temperature flue gas medium is introduced.
7. The rotary kiln as claimed in claim 2, wherein the feed inlet is disposed on the feed hood in an inclined manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920930777.6U CN210165739U (en) | 2019-06-20 | 2019-06-20 | Internal and external heat combined rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920930777.6U CN210165739U (en) | 2019-06-20 | 2019-06-20 | Internal and external heat combined rotary kiln |
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| Publication Number | Publication Date |
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| CN210165739U true CN210165739U (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920930777.6U Active CN210165739U (en) | 2019-06-20 | 2019-06-20 | Internal and external heat combined rotary kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145933A (en) * | 2019-06-20 | 2019-08-20 | 山东齐盛机电工程有限公司 | Hot Combined type back rotary kiln and its application method inside and outside one kind |
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2019
- 2019-06-20 CN CN201920930777.6U patent/CN210165739U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145933A (en) * | 2019-06-20 | 2019-08-20 | 山东齐盛机电工程有限公司 | Hot Combined type back rotary kiln and its application method inside and outside one kind |
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