CN111854375A - Vacuum microwave dewatering equipment - Google Patents
Vacuum microwave dewatering equipment Download PDFInfo
- Publication number
- CN111854375A CN111854375A CN202010731608.7A CN202010731608A CN111854375A CN 111854375 A CN111854375 A CN 111854375A CN 202010731608 A CN202010731608 A CN 202010731608A CN 111854375 A CN111854375 A CN 111854375A
- Authority
- CN
- China
- Prior art keywords
- microwave
- vacuum
- cavity
- feeding
- discharging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
- F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
- F26B11/0486—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements being held stationary, e.g. internal scraper blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/022—Arrangements of drives, bearings, supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/048—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum in combination with heat developed by electro-magnetic means, e.g. microwave energy
Abstract
The invention provides vacuum microwave dehydration equipment, which comprises a microwave box body; the microwave energy introducing port and the microwave source are arranged on the microwave box body, and the microwave source introduces microwave energy into the microwave box body through the microwave energy introducing port; the microwave box comprises a microwave box body, a vacuum cavity body and a control circuit, wherein the microwave box body is arranged in the microwave box body, the vacuum cavity body is made of a microwave penetrable material, and rotates in the microwave box body and receives microwave energy. The equipment of the invention has simple structure, can carry out continuous dehydration production and is suitable for large-scale commercial application.
Description
Technical Field
The invention relates to the technical field of microwave dehydration, in particular to vacuum microwave dehydration equipment.
Background
In recent years, vacuum microwave dehydration technology has been rapidly developed to meet the demand of people for higher product quality and large-scale commercialization. Particularly, the technology is mature in the aspects of agricultural products, food and medicines. Since the boiling point of water decreases with decreasing pressure, the aqueous material can be dehydrated at lower temperatures by suitable application of microwave energy under vacuum conditions to avoid changes in properties and loss of ingredients due to high temperatures.
Based on the characteristics of vacuum and microwave, there are a number of technical challenges to be addressed in practice. One of these is how to introduce microwave energy into the vacuum chamber without causing arcing within the chamber. This is because there is no air as an insulator in the vacuum chamber, and the high energy density microwaves cause electrical breakdown, resulting in high temperature plasma discharge, with serious consequences. In addition, due to the uncertainty of microwave energy distribution in the vacuum chamber, sufficient consideration needs to be given to the uniformity of material dehydration, which is particularly important for certain sensitive materials. In combination with the above-mentioned requirements in terms of operation, maintenance and costs, there are currently a number of technical means and methods which are disclosed.
For example, chinese utility model patent No. ZL205300193U proposes that a rotary drum is penetrated by microwaves in a vacuum chamber, so that the materials are continuously tumbled and mixed in the drum, and finally uniform dewatering effect is obtained. However, in this solution, the microwave energy needs to be introduced into the vacuum chamber from the atmospheric environment through a special window located on the vacuum chamber. Since the microwave with large energy can generate plasma discharge near the window under the vacuum condition, the usable energy density is severely restricted, and the capacity of production equipment with unit size is limited. In addition, the material carrying roller in the vacuum chamber is difficult to operate and control from outside the vacuum chamber when working in a microwave environment, which limits the size of the roller and the applicable material range.
The chinese patent application with publication number CN1952570A proposes that the introduction port of a microwave source or other heating source is arranged in a microwave chamber for suspension, the material is directly placed on the inner wall of a vacuum chamber, the vacuum chamber is rotated as a whole to obtain uniform dehydration effect, and the complexity of the apparatus can be greatly reduced because a roller as a material carrier is omitted. But one port of the vacuum chamber is used for microwave energy introduction, so that the scheme cannot achieve large-scale continuous feeding and discharging production. Further, the microwave energy inlet is provided in the vacuum chamber, and it is difficult to install and maintain the microwave energy inlet in terms of engineering.
Therefore, a new vacuum microwave dehydration device and method are needed to be provided to solve the problems of complicated device structure, overlarge size, inconvenience in installation and maintenance, further incapability of continuous production and the like caused by the need of avoiding the generation of plasma discharge and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide vacuum microwave dehydration equipment and a method, which have the advantages of avoiding plasma discharge and other phenomena, along with simple structure, small size, convenient installation and maintenance, capability of further realizing continuous dehydration production and suitability for large-scale commercial application.
According to an aspect of the present invention, there is provided a vacuum microwave dehydration apparatus comprising:
a microwave box body;
the microwave energy inlet and the microwave source are arranged on the microwave box body, and the microwave source introduces microwave energy into the microwave box body through the microwave energy inlet;
the microwave box comprises a microwave box body, a vacuum cavity body and a control circuit, wherein the microwave box body is arranged in the microwave box body, the vacuum cavity body is made of a microwave penetrable material, and rotates in the microwave box body and receives microwave energy.
Preferably, the microwave permeable material is a ceramic, glass, PTFE material, UHMW material, PP material or HDPE material.
Preferably, the vacuum chamber rotates along an axial centerline.
Preferably, the apparatus further comprises: the vacuum generating device is connected with at least one opening of the vacuum cavity and is used for keeping the interior of the vacuum cavity in vacuum;
preferably, the apparatus further comprises: the feeding air lock device and the discharging air lock device are respectively arranged at two open ends of the vacuum cavity and are used for keeping the vacuum degree of the vacuum cavity and enabling materials to enter and exit the vacuum cavity.
Preferably, a first feeding airlock valve and a second feeding airlock valve are respectively arranged at two ends of an opening of the feeding airlock device, and the vacuum degree in the vacuum cavity is kept when the material enters the vacuum cavity through the alternate switching of the first feeding airlock valve and the second feeding airlock valve.
Preferably, a first discharging airlock valve and a second discharging airlock valve are respectively arranged at two ends of an opening of the discharging airlock device, and the vacuum degree in the vacuum cavity is kept when the material is discharged from the vacuum cavity through the alternate switching of the first discharging airlock valve and the second discharging airlock valve.
Preferably, the apparatus further comprises a conveyor belt for conveying the material to an open end of the feed airlock.
Preferably, the apparatus further comprises:
the feeding hopper is arranged between the conveyor belt and an opening at one end of the feeding air lock device;
the feeding cavity is arranged between the opening at the other end of the feeding air lock device and the opening at one end of the vacuum cavity;
and the discharging cavity and the discharging funnel are arranged between the opening at the other end of the vacuum cavity and the opening at one end of the discharging airlock device.
Preferably, the apparatus further comprises a vacuum conduit through which the vacuum generating device is connected to the feed chamber or the discharge chamber.
Preferably, the apparatus further comprises:
a driven wheel and a driving wheel supporting the vacuum chamber;
a motor for driving the driving wheel.
Preferably, axial rotary sealing devices are arranged at two ends of the opening of the vacuum cavity.
Preferably, an inwardly protruding bulge is arranged in the vacuum cavity.
Preferably, a temperature regulation circulating pump and a temperature sensor are arranged between the microwave box body and the vacuum cavity.
Preferably, the microwave box is a closed box, and the inside of the microwave box is at normal pressure.
Preferably, the microwave box body is divided into a plurality of independent microwave channels by metal clapboards, a microwave energy inlet is arranged on the outer wall of each independent microwave channel, and a microwave source with adjustable power is arranged at each microwave energy inlet.
Preferably, the apparatus further comprises a base, the microwave cabinet being mounted on the base, the angle of inclination of the base being continuously adjustable.
Preferably, the equipment further comprises a rotating shaft and a driving device, the base is installed on the rotating shaft, and the horizontal angle of the base is adjusted by the driving device located at the two ends of the base.
Compared with the prior art, the invention has at least one of the following beneficial effects:
the vacuum microwave dehydration equipment of the invention utilizes microwave penetrable materials to form the vacuum cavity, and the whole vacuum cavity is used as a microwave window and a material carrier, thereby greatly simplifying the structure of the whole equipment. Meanwhile, the structure does not need to additionally arrange a microwave window on the vacuum cavity, thereby being more beneficial to simplifying the control of microwave energy in the dehydration process.
According to the vacuum microwave dehydration equipment, the vacuum cavity is far away from the microwave source with concentrated energy, so that the possibility of generating plasma discharge is greatly reduced, the structure of the whole equipment is simplified, and the limitations of the size of the equipment and the microwave energy density are broken through.
In an alternative embodiment of the present invention, since the vacuum chamber is exposed to the microwave environment, but the outside of the vacuum chamber (i.e. the inside of the microwave box) is in a normal pressure state, the motion state and temperature of the vacuum chamber can be conveniently controlled.
In an optional embodiment of the invention, the air lock device is used for realizing continuous material inlet and outlet in the vacuum cavity under the condition of keeping the vacuum degree in the vacuum cavity, so that the automatic continuous production of the dehydration process can be realized, and the method is more suitable for large-scale commercial application.
In an optional embodiment of the invention, the vacuum cavity rotates along the axial center line during dehydration, and the bulge is used for stirring the materials in the vacuum cavity, so that the materials can obtain a more uniform dehydration effect.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a vacuum microwave dewatering apparatus according to an embodiment of the present invention.
In the figure: 1-a microwave box body; 2-vacuum chamber; 3-temperature regulation circulating pump; 4-a vacuum generating device; 5-a feeding air lock device; 6-a discharge airlock device; 7-a temperature sensor; 8-material; 9-a conveyor belt; 10-a feed hopper; 11-a first feed airlock valve; 12-a second feed airlock valve; 13-a driven wheel; 14-a drive wheel; 15-a motor; 16-a boss; 17. 18-a rotary seal device; 19-atmospheric air; 20-a metal separator; 21-microwave energy leading-in port; 22-a microwave source; 23-a feed chamber; 24-a discharge cavity; 25-a discharge funnel; 26-a first discharge airlock valve; 27-a second discharge airlock valve; 28-vacuum pipe; 29-a base; 30-a rotating shaft; 31-drive means.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a vacuum microwave dewatering apparatus according to an embodiment of the present invention.
As shown in fig. 1, a vacuum microwave dehydrating apparatus according to an embodiment of the present invention includes: a microwave box body 1; a microwave energy inlet 21 and a microwave source 22 provided on the wall surface of the microwave box 1, the microwave source 22 introducing microwave energy into the microwave box 1 through the microwave energy inlet 21; the microwave oven comprises a vacuum cavity 2 arranged in the microwave oven body 1, wherein the vacuum cavity 2 is made of a microwave penetrable material, and the vacuum cavity 2 rotates in the microwave oven body 1 and receives microwave energy.
The vacuum microwave dehydration equipment of the embodiment utilizes the microwave penetrable material to form the vacuum cavity, and the whole vacuum cavity is used as the microwave window and the material carrier, thereby greatly simplifying the structure of the whole equipment.
In some embodiments, the vacuum chamber 2 is made of a microwave transparent low dielectric constant material and can withstand a certain pressure difference (e.g., 0-100kpa) and a certain operating temperature (e.g., -60 ℃ to 120 ℃), and alternative materials include, but are not limited to, ceramics, glass, PTFE, UHMW, PP, HDPE materials, and the like. The whole vacuum cavity 2 can be a whole, and can also be formed by splicing a plurality of sections so as to be convenient for transportation, and the joint parts spliced by the plurality of sections can be of metal structures so as to increase the strength. The diameter of the vacuum chamber 2 ranges from 0.1 to 19 meters and its wall thickness can range from 0.005 to 0.1 meters, depending on the material and application. Of course, the materials, structures and dimensions of the vacuum chamber are only some examples, and other materials, structures and dimensions may be selected in other examples as long as the function of the vacuum chamber of the present invention is achieved.
During the dehydration process, the temperature of the air between the microwave cabinet 2 and the vacuum chamber 2 can be controlled between-60 ℃ and 100 ℃ by heating or cooling. The pressure in the vacuum chamber 2 may be in the range of 0 to 500mbar, the power density of the microwave energy may be up to 10kw per kilogram of aqueous material, and the moisture content of the material 8 in the vacuum chamber 2 may be in the range of 2% to 99%.
In another embodiment of the present invention, on the basis of the above embodiment, a vacuum generating device 4 is further included, and the vacuum generating device 4 is connected to at least one opening of the vacuum chamber 2 for maintaining vacuum inside the vacuum chamber 2.
In another embodiment of the present invention, on the basis of the above embodiment, the present invention further includes a feeding airlock device 5 and a discharging airlock device 6, where the feeding airlock device 5 and the discharging airlock device 6 are respectively disposed at two open ends of the vacuum chamber 2, and are used for realizing the entry and exit of the material 8 in the vacuum chamber 2 under the condition of maintaining the vacuum degree inside the vacuum chamber 2, so as to provide conditions for realizing continuous production.
Specifically, in order to better maintain the vacuum degree in the vacuum chamber 2 during feeding, the two ends of the opening of the feeding airlock device 5 are respectively provided with a first feeding airlock valve 11 and a second feeding airlock valve 12, and the first feeding airlock valve 11 and the second feeding airlock valve 12 are alternately switched to maintain the vacuum degree in the vacuum chamber 2 when the material 8 enters the vacuum chamber 2.
In order to better maintain the vacuum degree in the vacuum cavity 2 during discharging, a first discharging airlock valve 26 and a second discharging airlock valve 27 are respectively arranged at two ends of an opening of the discharging airlock device 6, and the vacuum degree in the vacuum cavity 2 is maintained when the material 8 is discharged from the vacuum cavity 2 through the alternate switching of the first discharging airlock valve 26 and the second discharging airlock valve 27.
In another embodiment of the invention, the vacuum microwave dewatering device further comprises a conveyor belt 9 for conveying the material 8 to an opening at one end of the feed airlock 5 for better feeding and/or discharging. Further, a feeding funnel 10 can be arranged between the conveyor belt 9 and an opening at one end of the feeding air lock device 5, and a feeding cavity 23 is arranged between an opening at the other end of the feeding air lock device 5 and an opening at one end of the vacuum cavity 2; and a discharging cavity 24 and a discharging funnel 25 are arranged between the opening at the other end of the vacuum cavity 2 and the opening at one end of the discharging airlock device 6. In one embodiment, a vacuum line 28 is provided, and the vacuum generating device 4 is connected to the feeding chamber 23 or the discharging chamber 24 through the vacuum line 28, so as to remove the water vapor generated during the dehydration process and the air in the chamber in time.
In operation, material 8 to be dewatered is loaded onto the feed hopper 10 by the conveyor belt 9, and the material 8 enters the vacuum chamber 2 through the feed chamber 23 under the action of gravity by the alternate switching of the first feed airlock valve 11 and the second feed airlock valve 12 in the feed airlock 5. At the other end of the vacuum chamber 2, the dehydrated material 8 enters the discharging hopper 25 through the discharging cavity 24 and passes through the discharging airlock device 6 under the action of gravity, and the first discharging airlock valve 26 and the second discharging airlock valve 27 of the discharging airlock device 6 are alternately opened and closed to maintain the vacuum degree in the vacuum chamber 2. This achieves continuous feeding and discharging without affecting the pressure in the vacuum chamber 2.
In an embodiment of the present invention, the vacuum microwave dehydration apparatus further includes a driven wheel 13 and a driving wheel 14 supporting the vacuum chamber 2, and a motor 15, wherein the motor 15 drives the driving wheel 14 to move, the driving wheel 14 drives the driven wheel 13 to move, and the driven wheel 13 drives the vacuum chamber 2 to move, so that the driving wheel 14 rotates the vacuum chamber 2 along an axial center line, and the vacuum chamber 2 rotates integrally to obtain a uniform dehydration effect.
In order to achieve a better dewatering effect, axial rotary sealing devices 17, 18 are provided at both ends of the opening of the vacuum chamber 2 for maintaining the airtightness of the vacuum chamber 2.
In an embodiment of the present invention, an inwardly protruding protrusion 16 is disposed in the vacuum chamber 2 for stirring the material 8 during dehydration, so as to obtain a better uniform dehydration effect.
In an embodiment of the present invention, in order to monitor the temperature and the air pressure, a temperature adjusting circulation pump 3 and a temperature sensor 7 may be disposed between the microwave box 1 and the vacuum chamber 2, the temperature adjusting circulation pump 3 is used for heating or cooling the atmospheric air 19 in the microwave box 1, and the temperature sensor 7 is used for detecting the temperature change in the microwave box 1 in time.
In an embodiment of the present invention, the microwave box 1 is a closed box with an internal normal pressure, so that although the vacuum cavity is exposed to the microwave environment, the external part of the vacuum cavity (i.e. the inside of the microwave box) is in a normal pressure state, and the motion state and the temperature of the vacuum cavity can be conveniently controlled.
In some preferred embodiments, the inside of the microwave box 1 may be divided into several independent microwave channels by using metal partitions 20, a microwave energy inlet 21 is opened on the outer wall of each independent microwave channel, and each microwave energy inlet 21 is provided with a microwave source 22 with adjustable power. In the dehydration process, along with the rotation of the vacuum cavity 2, the microwave radiation heats the materials in the vacuum cavity 2 from each microwave energy inlet, so that the materials finally obtain uniform dehydration effect, and simultaneously, the microwave energy of each section of the vacuum cavity 2 can be adjusted and controlled according to actual needs.
In some preferred embodiments, the microwave cabinet 1 is mounted on a base 29, and the tilt angle of the base 29 is continuously adjustable. Specifically, the base 29 is mounted on a rotating shaft 30, and the horizontal angle of the base 29 is adjusted by driving devices 31 located at both ends of the base 29. By adjusting the angle of the base 29, the length of time the material 8 stays in the vacuum chamber 2 and the total amount of the material 8 in the vacuum chamber 2 can be adjusted.
In the vacuum microwave dehydration equipment in the embodiments of the invention, the whole vacuum cavity is used as a microwave introduction window and a material carrier, and the possibility of generating plasma discharge is greatly reduced because the vacuum cavity is far away from a microwave source with concentrated energy, so that the structure of the whole equipment is simplified, and the limitations of the size of the equipment and the microwave energy density are broken through. Furthermore, although the vacuum cavity is exposed in the microwave environment, the outside of the vacuum cavity is in a normal pressure state, so that the motion state and the temperature of the vacuum cavity can be conveniently controlled.
In the above embodiments of the present invention, the airlock is used to realize the continuous feeding and discharging of the material in the vacuum chamber under the condition of maintaining the vacuum degree in the vacuum chamber, so as to realize the automatic continuous production of the dehydration process.
In some embodiments of the invention, the vacuum chamber rotates along the axial center line during dehydration, and the material in the vacuum chamber is stirred by the convex part, so that the material can be dehydrated more uniformly.
The characteristics and the advantages make the vacuum microwave dehydration equipment more suitable for large-scale commercial application compared with the prior art. The invention is particularly applicable to various foods containing fats and oils such as pigskin, agricultural products such as vegetables, frozen particulate aqueous materials such as protein or medicinal materials, or liquid materials such as fruit juices.
The technical features in the embodiments described above may be operated with reference to the embodiments described above, or may be arbitrarily combined according to actual needs, and for brevity of description, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present description as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (18)
1. A vacuum microwave dehydration apparatus characterized by comprising:
a microwave box body (1);
a microwave energy inlet (21) and a microwave source (22) which are arranged on the microwave box body (1), wherein the microwave source (22) introduces microwave energy into the microwave box body (1) through the microwave energy inlet (21);
the microwave oven comprises a vacuum cavity (2) arranged in the microwave box body (1), wherein the vacuum cavity (2) is made of a microwave penetrable material, and the vacuum cavity (2) rotates in the microwave box body (1) and receives microwave energy.
2. Vacuum microwave dewatering apparatus according to claim 1, characterized in that the microwave permeable material is a ceramic, glass, PTFE material, UHMW material, PP material or HDPE material.
3. A vacuum microwave dewatering apparatus according to claim 1, characterized in that the vacuum chamber (2) rotates along an axial centre line.
4. The vacuum microwave dehydration apparatus of claim 1 further comprising: a vacuum generating device (4) connected to at least one opening of the vacuum chamber (2) for maintaining a vacuum inside the vacuum chamber (2).
5. The vacuum microwave dehydration apparatus of claim 1 further comprising: the feeding air lock device (5) and the discharging air lock device (6) are respectively arranged at two opening ends of the vacuum cavity (2) and are used for realizing the feeding and discharging of the material (8) in the vacuum cavity (2) under the condition of keeping the vacuum degree of the vacuum cavity (2).
6. A vacuum microwave dehydration equipment according to claim 5 characterized in that the two open ends of said feeding airlock device (5) are respectively provided with a first feeding airlock valve (11) and a second feeding airlock valve (12), and by the alternate switching of said first feeding airlock valve (11) and said second feeding airlock valve (12), the material (8) is kept in vacuum degree inside said vacuum chamber (2) when entering said vacuum chamber (2).
7. A vacuum microwave dehydration equipment according to claim 5 characterized in that the two open ends of said discharging airlock device (6) are respectively provided with a first discharging airlock valve (26) and a second discharging airlock valve (27), and the vacuum degree inside said vacuum chamber (2) is maintained when the material (8) is discharged from said vacuum chamber (2) by the alternate switching of said first discharging airlock valve (26) and said second discharging airlock valve (27).
8. A vacuum microwave dewatering apparatus according to claim 5, further comprising a conveyor belt (9) for conveying the material (8) to an open end of the feed airlock (5).
9. The vacuum microwave dehydration apparatus of claim 8 further comprising:
the feeding hopper (10) is arranged between the conveyor belt (9) and an opening at one end of the feeding air lock device (5);
the feeding cavity (23) is arranged between the opening at the other end of the feeding air lock device (5) and the opening at one end of the vacuum cavity (2);
a discharging cavity (24) and a discharging funnel (25) which are arranged between the opening at the other end of the vacuum cavity (2) and the opening at one end of the discharging airlock device (6).
10. The vacuum microwave dehydration apparatus of claim 9 further comprising:
the vacuum generating device (4) is connected with at least one opening of the vacuum cavity (2) and is used for keeping the inside of the vacuum cavity (2) in vacuum;
a vacuum line (28), by means of which vacuum generating device (4) is connected to the inlet chamber (23) or the outlet chamber (24).
11. The vacuum microwave dehydration apparatus of claim 1 further comprising:
a driven wheel (13) and a driving wheel (14) supporting the vacuum chamber (2);
a motor (15) for driving the drive wheel (14).
12. A vacuum microwave dewatering apparatus according to claim 5, characterized in that axial rotary sealing means (17, 18) are provided at both open ends of the vacuum chamber (2).
13. A vacuum microwave dewatering apparatus according to claim 1, characterized by a base (29), the microwave box (1) being mounted on the base (29), the angle of inclination of the base (29) being continuously adjustable.
14. A vacuum microwave dewatering apparatus according to claim 13, further comprising a shaft (30) and a drive means (31), the base (29) being mounted on the shaft (30), the horizontal angle of the base (29) being adjusted by the drive means (31) at both ends of the base (29).
15. A vacuum microwave dewatering apparatus according to any of claims 1-14, characterized in that inwardly projecting protrusions (16) are provided in the vacuum chamber (2).
16. A vacuum microwave dewatering apparatus according to any of claims 1-14, characterized in that a temperature regulation circulation pump (3) and a temperature sensor (7) are provided between the microwave cabinet (1) and the vacuum chamber (2).
17. A vacuum microwave dewatering apparatus according to any of claims 1-14, characterized in that the microwave cabinet (1) is a closed cabinet and the interior is at atmospheric pressure.
18. A vacuum microwave dewatering apparatus according to claim 17, characterized in that the inside of the microwave box (1) is divided into several independent microwave channels by metal partitions (20), a microwave energy inlet (21) is opened on the outer wall of each independent microwave channel, and each microwave energy inlet (21) is provided with a microwave source (22) with adjustable power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731608.7A CN111854375A (en) | 2020-07-27 | 2020-07-27 | Vacuum microwave dewatering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010731608.7A CN111854375A (en) | 2020-07-27 | 2020-07-27 | Vacuum microwave dewatering equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111854375A true CN111854375A (en) | 2020-10-30 |
Family
ID=72947660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010731608.7A Pending CN111854375A (en) | 2020-07-27 | 2020-07-27 | Vacuum microwave dewatering equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111854375A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02201824A (en) * | 1988-12-15 | 1990-08-10 | Hydro Quebec | Method and apparatus for drying microwave of paper insulation for high voltage electrical engineering apparatus |
| CN101082464A (en) * | 2007-06-29 | 2007-12-05 | 江南大学 | Micro-wave vacuum equipment |
| CN101336948A (en) * | 2008-08-08 | 2009-01-07 | 云南特安呐制药股份有限公司 | Panax Notoginseng microwave drying sterilization method |
| CN102288012A (en) * | 2011-05-25 | 2011-12-21 | 烟台卓能电池材料有限公司 | Rotary-type microwave vacuum drying machine |
| CN102538423A (en) * | 2012-02-10 | 2012-07-04 | 周跃云 | Microwave vacuum drier |
| CN102721269A (en) * | 2012-07-11 | 2012-10-10 | 海南卫康制药(潜山)有限公司 | Liquid nitrogen refrigeration micro-wave heating vacuum drier |
| CN103007681A (en) * | 2012-12-18 | 2013-04-03 | 中冶长天国际工程有限责任公司 | Activated carbon flue gas desulfurization and regeneration device and method |
| DE102007055488B4 (en) * | 2006-12-01 | 2015-01-22 | Püschner GmbH + Co. KG | Microwave vacuum drying plant for drying lumpy, powdery or granular material |
| CN104677054A (en) * | 2015-02-11 | 2015-06-03 | 沈阳师范大学 | Inverted microwave low-temperature fluidized bed drying equipment |
| CN105419877A (en) * | 2015-12-21 | 2016-03-23 | 代建军 | Solid waste two-stage pyrolysis gasification system based on fluidized bed and moving bed |
| CN106123492A (en) * | 2016-07-19 | 2016-11-16 | 浙江工业大学 | A kind of microwave horizontal multi-cell fluidized bed drying device |
| CN107764032A (en) * | 2017-10-26 | 2018-03-06 | 许五妮 | A kind of Chinese medicine High-efficiency Sustainable drying unit |
| CN109230546A (en) * | 2018-07-09 | 2019-01-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Pneumatic ash transmitting system |
| CN210497477U (en) * | 2019-09-11 | 2020-05-12 | 深圳市恒富盛科技有限公司 | Positive pressure purging system for temperature-pressure flow all-in-one machine |
-
2020
- 2020-07-27 CN CN202010731608.7A patent/CN111854375A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02201824A (en) * | 1988-12-15 | 1990-08-10 | Hydro Quebec | Method and apparatus for drying microwave of paper insulation for high voltage electrical engineering apparatus |
| DE102007055488B4 (en) * | 2006-12-01 | 2015-01-22 | Püschner GmbH + Co. KG | Microwave vacuum drying plant for drying lumpy, powdery or granular material |
| CN101082464A (en) * | 2007-06-29 | 2007-12-05 | 江南大学 | Micro-wave vacuum equipment |
| CN101336948A (en) * | 2008-08-08 | 2009-01-07 | 云南特安呐制药股份有限公司 | Panax Notoginseng microwave drying sterilization method |
| CN102288012A (en) * | 2011-05-25 | 2011-12-21 | 烟台卓能电池材料有限公司 | Rotary-type microwave vacuum drying machine |
| CN102538423A (en) * | 2012-02-10 | 2012-07-04 | 周跃云 | Microwave vacuum drier |
| CN102721269A (en) * | 2012-07-11 | 2012-10-10 | 海南卫康制药(潜山)有限公司 | Liquid nitrogen refrigeration micro-wave heating vacuum drier |
| CN103007681A (en) * | 2012-12-18 | 2013-04-03 | 中冶长天国际工程有限责任公司 | Activated carbon flue gas desulfurization and regeneration device and method |
| CN104677054A (en) * | 2015-02-11 | 2015-06-03 | 沈阳师范大学 | Inverted microwave low-temperature fluidized bed drying equipment |
| CN105419877A (en) * | 2015-12-21 | 2016-03-23 | 代建军 | Solid waste two-stage pyrolysis gasification system based on fluidized bed and moving bed |
| CN106123492A (en) * | 2016-07-19 | 2016-11-16 | 浙江工业大学 | A kind of microwave horizontal multi-cell fluidized bed drying device |
| CN107764032A (en) * | 2017-10-26 | 2018-03-06 | 许五妮 | A kind of Chinese medicine High-efficiency Sustainable drying unit |
| CN109230546A (en) * | 2018-07-09 | 2019-01-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Pneumatic ash transmitting system |
| CN210497477U (en) * | 2019-09-11 | 2020-05-12 | 深圳市恒富盛科技有限公司 | Positive pressure purging system for temperature-pressure flow all-in-one machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201032332Y (en) | Microwave hot blast barrate drying apparatus | |
| CN102338547B (en) | Microwave drier and microwave drying method | |
| US3545093A (en) | Microwave vibrating resonating cavity and drying process | |
| US9435585B2 (en) | Microwave dryer and microwave drying method | |
| CN102288012A (en) | Rotary-type microwave vacuum drying machine | |
| CN106738435A (en) | Rapid drying device and drying means after a kind of plastic extruding pelletization | |
| CN106766689B (en) | Microwave material drying device | |
| CN213931919U (en) | Continuous cleaning and automatic adjusting rectangular microwave continuous vacuum drying sterilization equipment | |
| CN101312604B (en) | Heat treatment facility of microwave rotary drum | |
| CN111854375A (en) | Vacuum microwave dewatering equipment | |
| CN112197563A (en) | Continuous cleaning and automatic adjusting rectangular microwave continuous vacuum drying sterilization equipment | |
| CN206335733U (en) | A kind of rapid drying device after plastic extruding pelletization | |
| CN201104080Y (en) | Horizontal internal rotation type microwave drying device | |
| CN219514246U (en) | Water cooling structure of microwave heater | |
| UA86702C2 (en) | Drier for bulk dielectric materials | |
| CN201087969Y (en) | Drum type microwave continuously heating mechanism for solid materiel | |
| CN211084736U (en) | Energy-concerving and environment-protective microwave drying line | |
| CN217465217U (en) | Chemical solid material drying device | |
| CN108981325A (en) | Chemical industry station-service rotary drier | |
| CN101839619A (en) | Novel rotary type microwave drying device | |
| CN111854374A (en) | Vacuum microwave dewatering equipment | |
| CN213357380U (en) | Garbage degradation device | |
| RU2729949C1 (en) | Drum biofermenter for processing of organic wastes | |
| CN112781336A (en) | Spiral semi-automatic drying tank | |
| CN220507610U (en) | Multi-layer dryer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201030 |
|
| WD01 | Invention patent application deemed withdrawn after publication |