CN214065611U - Roller way type microwave drying kiln - Google Patents
Roller way type microwave drying kiln Download PDFInfo
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- CN214065611U CN214065611U CN202022524984.7U CN202022524984U CN214065611U CN 214065611 U CN214065611 U CN 214065611U CN 202022524984 U CN202022524984 U CN 202022524984U CN 214065611 U CN214065611 U CN 214065611U
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Abstract
The utility model discloses a roller path type microwave drying kiln, which comprises a kiln body, a transmission roller assembly, a microwave generator assembly and a hot air device, wherein the transmission roller assembly comprises a plurality of transmission rollers which are tiled at set intervals to form a material transportation channel, and the rotation of each transmission roller is gear transmission; the kiln body is divided into an upper cavity and a lower cavity by the driving roller assembly, the upper cavity provides a heating area, and the lower cavity provides an installation hot air channel and a kiln maintenance and cleaning space; the microwave generator assembly comprises a plurality of microwave generators which are uniformly distributed on the top of the kiln body; and the inlet of the hot air device is communicated with air, the outlet of the hot air device is communicated with an air inlet pipeline arranged at the bottom of the kiln body, and the air inlet pipeline is arranged below the transmission roller assembly.
Description
Technical Field
The utility model belongs to the thermotechnical equipment field, concretely relates to roller bed formula microwave drying kiln.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information constitutes prior art that is already known to a person skilled in the art.
Drying is an important link in ceramic material production, and high-efficiency, energy-saving and clean drying equipment has important significance for improving production efficiency and product quality.
The microwave drying technology depends on the interaction of microwaves which change periodically for hundreds of millions of times per second and polar molecules (such as water molecules) in the material, so that the polar molecules in the material do electric field polar motion at the same speed, and the polar molecules frequently collide with each other to generate a large amount of friction heat, so that each part in the material obtains heat energy instantly to heat, and the temperature is raised, and water evaporation is carried out successively, thereby achieving the purpose of drying. The microwave drying has the advantages of high drying speed, short drying time, uniform drying, convenient control and high energy utilization rate.
The most important defects of the existing continuous microwave drying kiln are that the conveying process is unstable, and the kiln with higher drying temperature requirement is easy to cause the problems of piling, blocking and the like.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model provides a roller path formula microwave drying kiln.
In order to solve the above technical problem, one or more embodiments of the present invention provide the following technical solutions:
a roller path type microwave drying kiln comprises a kiln body, a transmission roller assembly, a microwave generator assembly and a hot air device, wherein,
the transmission roller assembly comprises a plurality of transmission rollers which are tiled at set intervals to form a material transportation channel, and the rotation of each transmission roller is in gear transmission;
the kiln body is divided into an upper cavity and a lower cavity by the driving roller assembly, the upper cavity provides a heating area, and the lower cavity provides an installation hot air channel and a kiln maintenance and cleaning space;
the microwave generator assembly comprises a plurality of microwave generators which are uniformly distributed on the top of the kiln body;
and the inlet of the hot air device is communicated with air, the outlet of the hot air device is communicated with an air inlet pipeline arranged at the bottom of the kiln body, and the air inlet pipeline is arranged below the transmission roller assembly.
Compared with the prior art, the utility model discloses an above one or more technical scheme have gained following beneficial effect:
1. traditional microwave drying kiln adopts stainless steel chain formula transmission mostly, and the phenomenon that the speed is slow when producing easily in its transmission process, and the transmission is unstable, the utility model discloses a roll table formula structure to the aluminium oxide roller stick is the driving rod, adopts the gear drive of assembly at aluminium oxide roller stick end, has solved the unstable technical problem of traditional microwave drying kiln transmission. And the alumina roller does not absorb microwave, and the roller does not generate heat during operation.
2. The utility model discloses microwave drying kiln accessible adjusting gear speed, control material advancing speed adjusts the dry time of material in the roll table, applicable ceramic material drying in the difference.
3. The utility model adopts the aluminum silicate fiber felt as the heat insulation material, and solves the problem of poor heat insulation of the traditional microwave drying kiln. The aluminum silicate fiber material does not absorb microwave, does not consume microwave energy, and has good heat preservation and energy saving effects.
4. Meanwhile, the aluminum silicate fiber felt is used as a heat insulation layer, so that heat insulation can be performed and microwave leakage can be prevented. The outer stainless steel shell can effectively prevent microwave leakage, and the safety performance is higher.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic view of the overall structure of a roller-type microwave drying kiln according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a roller way type microwave drying kiln according to an embodiment of the present invention;
fig. 3 is a schematic side view of the roller-type microwave drying kiln according to the embodiment of the present invention.
In the figure, the device comprises a kiln body 1, a kiln body 2, a conveying roller 3, a hot air device 4, a microwave generator 5, a water cooling device 6, a chimney 7 and a control system.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
A roller path type microwave drying kiln comprises a kiln body, a transmission roller assembly, a microwave generator assembly and a hot air device, wherein,
the transmission roller assembly comprises a plurality of transmission rollers which are tiled at set intervals to form a material transportation channel, and the rotation of each transmission roller is in gear transmission;
the kiln body is divided into an upper cavity and a lower cavity by the driving roller assembly, the upper cavity provides a heating area, and the lower cavity provides an installation hot air channel and a kiln maintenance and cleaning space;
the microwave generator assembly comprises a plurality of microwave generators which are uniformly distributed on the top of the kiln body;
and the inlet of the hot air device is communicated with air, the outlet of the hot air device is communicated with an air inlet pipeline arranged at the bottom of the kiln body, and the air inlet pipeline is arranged below the transmission roller assembly.
In some embodiments, the kiln wall of the kiln body is of a three-layer structure, and an inner stainless steel layer, an aluminum silicate fiber felt layer and an outer stainless steel layer are sequentially arranged from inside to outside.
The aluminum silicate fiber felt layer is used as a lining heat-insulating material, is light in material and good in heat-insulating effect, and meanwhile, the aluminum silicate fiber has good wave permeability and does not generate heat under the action of microwaves.
Further, the kiln body is supported by a kiln support frame.
The kiln supporting frame is formed by welding channel steel, I-shaped steel and angle iron and is used for supporting and fixing a kiln body, and the structure of the kiln supporting frame can be a conventional structure and is not limited specially.
In some embodiments, the material of the driving roller is alumina ceramic or quartz ceramic.
The alumina ceramic and the quartz ceramic are wave-transparent materials, do not generate heat under the action of microwaves, and can ensure the normal work of a transmission system.
Furthermore, one end of each driving roller is connected with the gear through a bayonet, and the other end of each driving roller is overlapped between the two bearings.
The condition that the two bearings are arranged in parallel, the rotating shafts of the two bearings are parallel, and the distance between the two bearings is smaller than the diameter of the transmission roller is met.
The transmission roller is driven to rotate through a gear transmission system. The driving roller is connected with the gear through the bayonet, namely, the driving roller is sleeved in the bayonet, and the bayonet is fixedly connected with the gear. The other end of the ceramic driving roller is lapped between the two bearings to limit the ceramic driving roller, so that the ceramic driving roller can rotate more flexibly and freely.
The distance between two adjacent driving rollers is 35-45 mm.
In some embodiments, the drive roller assembly transports material from one end to the other.
Furthermore, the hot air inlet pipeline is distributed in the middle of the bottom of the kiln body.
The air is heated and then is introduced into the kiln body, so that the material to be dried can be preheated, and the material to be dried can be dried better; the hot air introduced into the heating area is matched with the microwaves, so that the moisture on the surface of the material can be taken away, and the drying efficiency of the material can be improved.
The temperature of the hot air may be 60-120 ℃.
In some embodiments, the microwave generator further comprises a water cooling device, wherein the water cooling device comprises a jacket arranged outside the microwave generator, a circulating cooling pipe, a pump and a water pool, the circulating cooling pipe connects the jacket and the water pool, and the pump is arranged in the water pool.
In some embodiments, still include waste hot gas discharge system, waste hot gas discharge system includes a plurality of spinal branchs pipeline, trunk line, chimney and fan, and a plurality of spinal branchs pipeline distribute in the top of the kiln body, and its one end and the internal portion intercommunication of kiln, the other end is connected with the one end of trunk line, and the other end of trunk line passes through the fan to be connected with the chimney, and the chimney is vertical to be set up in the top of the kiln body.
The device also comprises a control system which is in electric signal connection with devices such as a fan, a pump, a motor, a microwave generator and the like and is used for controlling the start and stop, the rotating speed regulation, the microwave power regulation and the like of the devices.
In some embodiments, the gap between the end of the driving roller and other parts is filled with alumina silicate fiber cotton, and a stainless steel plate sealing arrangement is performed. The filling of the aluminum silicate fiber cotton can effectively prevent microwave leakage.
Examples
As shown in fig. 1, 2 and 3, a roller path type microwave drying kiln comprises a kiln body 1, a driving roller assembly, a microwave generator assembly and a hot air device, wherein,
the transmission roller assembly comprises a plurality of transmission rollers 2, the transmission rollers 2 are flatly laid at intervals and set distances to form a material transportation channel, and the rotation of each transmission roller is gear transmission;
the kiln body is divided into an upper cavity and a lower cavity by the driving roller assembly, the upper cavity provides a heating area, and the lower cavity provides an installation hot air channel and a kiln maintenance and cleaning space;
the microwave generator component comprises a plurality of microwave generators 4, and the microwave generators 4 are uniformly distributed on the top of the kiln body 1; the microwave generator adopts an industrial microwave source with the frequency of 2450MHz +/-50 Hz, adopts a 380V +/-10 percent and 50Hz +/-1 percent three-phase five-wire input power supply, has the rated output power of 60kW, and is continuously adjustable.
And the inlet of the hot air device 3 is communicated with air, the outlet of the hot air device is communicated with an air inlet pipeline arranged at the bottom of the kiln body 1, and the air inlet pipeline is arranged below the transmission roller assembly.
The wall body of the kiln body 1 is of a three-layer structure and sequentially comprises an inner stainless steel layer, an aluminum silicate fiber felt layer and an outer stainless steel layer from inside to outside. The thickness of the aluminium silicate fibre felt layer is 50 mm. The aluminum silicate fiber felt layer is used as a lining as a heat insulation material, is light in material and good in heat insulation effect, and meanwhile, the aluminum silicate fiber has good wave permeability and does not generate heat under the action of microwaves.
The kiln body 1 is supported by a kiln support frame. The kiln supporting frame is formed by welding channel steel, I-shaped steel and angle iron and is used for supporting and fixing a kiln body, and the structure of the kiln supporting frame can be a conventional structure and is not limited specially.
The driving roller 2 is made of alumina ceramics or quartz ceramics. The alumina ceramic and the quartz ceramic are wave-transparent materials, do not generate heat under the action of microwaves, and can ensure the normal work of a transmission system.
One end of each driving roller is connected with the gear through a bayonet, and the other end of each driving roller is overlapped between the two bearings. The gear transmission system comprises a motor, a differential mechanism, a chain, a gear shaft and the like, wherein the motor drives the chain, the chain drives the gear shaft, the gear shaft is connected with a gear at the end of the alumina ceramic roller rod, and the gear rotates to drive the alumina roller rod to rotate.
The distance between two adjacent driving rollers is 40 mm.
The transmission roller assembly conveys the materials to be dried from one end and the other end of the drying kiln, the length of the kiln body is 18m, and the feeding end and the discharging end are 1.5m respectively. The air inlet pipeline is distributed in the middle heating zone at the bottom of the kiln body. Air is heated and then is introduced into the kiln body, hot air introduced into the heating zone of the kiln body is matched with microwaves, so that moisture on the surface of the material can be taken away, and the drying efficiency of the material can be improved. The temperature of the hot air was 90 ℃.
The microwave generator water cooling device is characterized by further comprising a water cooling device 5, wherein the water cooling device 5 comprises a jacket, a circulating cooling pipe, a pump and a water tank, the jacket, the circulating cooling pipe, the pump and the water tank are arranged on the outer side of the microwave generator, the circulating cooling pipe connects the jacket with the water tank, and the pump is arranged in the water tank. The cooling system keeps the microwave source operating at a relatively constant temperature.
Still include waste heat gas discharge system, waste heat gas discharge system includes a plurality of spinal branch pipelines, trunk line, chimney and fan, and a plurality of spinal branch pipelines distribute in the top of the kiln body, and its one end and the internal portion intercommunication of kiln, the other end is connected with the one end of trunk line, and the other end of trunk line passes through the fan to be connected with the chimney, and the chimney is vertical to be set up in the top of the kiln body. The waste hot gas is hot gas generated in the drying process, mainly water vapor, and the waste hot gas in the kiln body is discharged in time through a waste hot gas discharge system, so that the smooth material drying is ensured.
The system also comprises a control system 7, wherein the control system 7 is in electric signal connection with devices such as a fan, a pump, a motor, a microwave generator and the like, is used for controlling the operation of the kiln, and comprises the steps of starting and stopping a water cooling system, rotating and stopping a transmission system, starting and stopping a microwave source, regulating the power of the microwave source according to the temperature, discharging waste heat gas out of the system, alarming the abnormal operation of each system and the like.
And aluminum silicate fiber cotton is filled in gaps between the end parts of the driving rollers and other parts and is sealed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A roller path type microwave drying kiln is characterized in that: comprises a kiln body, a transmission roller component, a microwave generator component and a hot air device, wherein,
the transmission roller assembly comprises a plurality of transmission rollers which are tiled at set intervals to form a material transportation channel, and the rotation of each transmission roller is in gear transmission;
the kiln body is divided into an upper cavity and a lower cavity by the driving roller assembly, the upper cavity provides a heating area, and the lower cavity provides an installation hot air channel and a kiln maintenance and cleaning space;
the microwave generator assembly comprises a plurality of microwave generators which are uniformly distributed on the top of the kiln body;
and the inlet of the hot air device is communicated with air, the outlet of the hot air device is communicated with an air inlet pipeline arranged at the bottom of the kiln body, and the air inlet pipeline is arranged below the transmission roller assembly.
2. The roller way type microwave drying kiln according to claim 1, characterized in that: the kiln wall of the kiln body is of a three-layer structure and sequentially comprises an inner stainless steel layer, an aluminum silicate fiber felt layer and an outer stainless steel layer from inside to outside.
3. The roller way type microwave drying kiln according to claim 1, characterized in that: the driving roller is made of alumina ceramics or quartz ceramics.
4. The roller way type microwave drying kiln according to claim 1, characterized in that: one end of each driving roller is connected with the gear through a bayonet, and the other end of each driving roller is overlapped between the two bearings.
5. The roller way type microwave drying kiln according to claim 4, characterized in that: the distance between two adjacent driving rollers is 35-45 mm.
6. The roller way type microwave drying kiln according to claim 1, characterized in that: the hot air channel is arranged in the middle of the bottom of the kiln body.
7. The roller way type microwave drying kiln according to claim 1, characterized in that: the microwave generator is characterized by further comprising a water cooling device, wherein the water cooling device comprises a jacket, a circulating cooling pipe, a pump and a water tank, the jacket, the circulating cooling pipe, the pump and the water tank are arranged on the outer side of the microwave generator, the circulating cooling pipe is used for connecting the jacket and the water tank, and the pump is arranged on the circulating cooling pipe.
8. The roller way type microwave drying kiln according to claim 1, characterized in that: still include waste heat gas discharge system, waste heat gas discharge system includes a plurality of spinal branch pipelines, trunk line, chimney and fan, and a plurality of spinal branch pipelines distribute in the top of the kiln body, and its one end and the internal portion intercommunication of kiln, the other end is connected with the one end of trunk line, and the other end of trunk line passes through the fan to be connected with the chimney, and the chimney is vertical to be set up in the top of the kiln body.
9. The roller way type microwave drying kiln according to claim 8, characterized in that: the main pipeline is arranged at the top of the kiln body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022524984.7U CN214065611U (en) | 2020-11-04 | 2020-11-04 | Roller way type microwave drying kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022524984.7U CN214065611U (en) | 2020-11-04 | 2020-11-04 | Roller way type microwave drying kiln |
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| Publication Number | Publication Date |
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| CN214065611U true CN214065611U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022524984.7U Active CN214065611U (en) | 2020-11-04 | 2020-11-04 | Roller way type microwave drying kiln |
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| CN (1) | CN214065611U (en) |
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