CN212806225U

CN212806225U - Microwave vacuum fluidized bed drying device

Info

Publication number: CN212806225U
Application number: CN201922212255.5U
Authority: CN
Inventors: 赵圣明; 赵岩岩; 李钊; 李宁宁; 康壮丽; 朱明明; 马汉军
Original assignee: Henan Institute of Science and Technology
Current assignee: Henan Institute of Science and Technology
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2021-03-26
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a microwave vacuum fluidized bed drying device, which comprises a first microwave vacuum drying system, a second fluidized bed drying system and a conveyor belt; the first microwave vacuum drying system comprises a containing tank, a drying tank, a rotating motor and a microwave heater; the second fluidized bed drying system comprises an air dehumidifier, a heater, a drying bin, a cyclone separator, a bag-type dust collector and an exhaust fan which are sequentially connected through pipelines; the drying bin is provided with a second feeding hole and a second discharging hole; the conveyer belt is arranged between the first discharge hole and the second feed hole. The utility model discloses a two drying system utilize first microwave vacuum drying system to realize carrying out preliminary quick high temperature drying to food, medicine and the material that its composition is not influenced to low moisture of other, utilize second fluidized bed drying system to carry out the secondary drying after dampening to the material to carry out effectual separation to the powder impurity of material, make the material dry rapidly, the energy consumption is low, serialization drying operation, drying cost is low.

Description

Microwave vacuum fluidized bed drying device

Technical Field

The utility model relates to a drying equipment technical field especially relates to a microwave vacuum fluidized bed drying device.

Background

At present, drying is an effective method for preserving food, medicines and other materials with low moisture and without influencing the components of the food, the medicines and the other materials, and the traditional drying mode has high energy consumption and low efficiency;

at present, the following two drying technologies are generally adopted for food, medicines and other materials with low moisture content and without influencing the components of the materials, wherein the first technology is a microwave drying technology; the second is a freeze drying technology; the two solutions and the existing problems are more, and 1, the microwave drying technology has short drying time and incomplete drying due to the defects of related equipment and cannot continuously work; 2. the freeze drying technology has long drying time and low working efficiency; 3. After being dried, the fabric can be placed in the atmosphere to be easily and rapidly moisturized; 4. low energy utilization rate and high energy consumption.

Therefore, it is an urgent need to solve the problems of the art to provide a microwave vacuum fluidized bed drying device with a simple structure, continuous drying operation, and high energy utilization rate, which can prevent secondary moisture regain.

Disclosure of Invention

In view of this, the utility model provides a simple structure, can continuous drying operation, and can prevent secondary moisture regain, microwave vacuum fluidized bed drying device that energy utilization is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a microwave vacuum fluidized bed drying device comprises a first microwave vacuum drying system, a second fluidized bed drying system and a conveyor belt.

The first microwave vacuum drying system comprises an accommodating tank, a drying tank, a rotating motor and a microwave heater; the microwave heating device comprises a containing tank, a microwave heater, a drying tank, a rotary motor, a microwave heating device and a control system, wherein the containing tank is provided with a first feeding hole and a first discharging hole, the power output end of the rotary motor is hermetically and rotatably arranged at one end of the containing tank, the inside of the containing tank is rotatably connected with the drying tank and is fixed with the power output end of the rotary motor, the microwave heater is arranged at the bottom of the inner wall of the containing tank, and a plurality of exhaust;

the second fluidized bed drying system comprises an air dehumidifier, a heater, a drying bin, a cyclone separator, a bag-type dust collector and an exhaust fan which are sequentially connected through pipelines; the drying bin is provided with a second feeding hole and a second discharging hole, a porous plate is arranged in the drying bin, a ventilation chamber is arranged below the porous plate, a cover is arranged at the top end of the drying bin, an air outlet of the cover is communicated with an air inlet of the cyclone separator, and an air inlet of the air dehumidifier is communicated with the upper end of the containing tank;

the conveyer belt is arranged between the first discharge hole and the second feed hole.

Furthermore, the drying tank is a cylinder, material trays are vertically arranged at intervals of 20-30cm in the axis direction of the inner wall of the drying tank, at least one material separating layer is arranged on the upper side of each material tray, the outer edge of the outermost material separating layer is the inner wall of the material tank, at least 4 partition plates are arranged in the material separating layers, and a cavity unit is formed between each adjacent partition plate in each material separating layer and each material tray; the partition plates on adjacent material trays (121) are in one-to-one correspondence, and the partition plates on the same material tray are in one-to-one correspondence in the radial direction.

Further, a first support frame and a second support frame are arranged on the inner wall middle portion of the containing tank in the radial direction, the first support frame is arranged above the second support frame in an inclined mode, the length of a base of the first support frame is larger than that of a base of the second support frame, the drying tank is enabled to incline downwards, and rollers which are tangent to the outer side of the drying tank are connected to the first support frame and the base of the second support frame.

Further, the inclination angle of the drying tank is 3-12 degrees.

Furthermore, a plurality of air inlet air duct inlets are formed between the porous plate and the ventilation chamber.

Further, the heater is an electric heating tube heater or a hot water tube heater.

The utility model adopts the double drying systems, the first microwave vacuum drying system is utilized to realize the preliminary rapid high temperature drying of food, medicine and other materials with low moisture which do not affect the components, the second fluidized bed drying system is utilized to carry out the secondary drying after the moisture regaining of the food, medicine and other materials with low moisture which do not affect the components, and the powder impurities of the materials are effectively separated, so that the materials are clean and are not easy to regain moisture;

the utility model utilizes the exhaust fan to extract the high-temperature gas in the first microwave vacuum drying system, even if the first microwave vacuum drying system is in a nearly vacuum state, the high-temperature gas can be utilized to reduce the energy consumption of the second fluidized bed drying system;

the utility model discloses a serialization drying operation, work efficiency is high and simple structure, and the cost of manufacture is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the microwave vacuum fluidized bed drying apparatus of the present invention;

FIG. 2 is a schematic cross-sectional view of a drying tank of the microwave vacuum fluidized bed drying device of the present invention;

FIG. 3 is a connection block diagram of the control structure of the microwave vacuum fluidized bed drying device of the present invention;

in the figure: 1 is a first microwave vacuum drying system; 11 is a holding tank; 111 is a first support frame; 112 is a second support frame; 12 is a drying tank; 121 is a material tray; 122 is a material separation layer; 123 is a clapboard; 13 is a rotating motor; 14 is a microwave heater; 2 is a second fluidized bed drying system; 21 is an air dehumidifier; 22 is a heater; 23 is a drying bin; 24 is a cyclone separator; 25 is a bag-type dust collector; 26 is an exhaust fan; 231 is a porous plate; 232 is a ventilation chamber; 233 is a cover; 234 is an air duct inlet; and 3 is a conveyor belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2: the embodiment provides a microwave vacuum fluidized bed drying device, which comprises a first microwave vacuum drying system 1, a second fluidized bed drying system 2 and a conveyor belt 3.

The first microwave vacuum drying system 1 includes a holding tank 11, a drying tank 12, a rotary motor 13, and a microwave heater 14; the containing tank 11 is provided with a first feeding hole and a first discharging hole, the power output end of the rotating motor 13 is arranged at one end of the containing tank 11 in a sealing and rotating mode, the inside of the containing tank 11 is rotatably connected with the drying tank 12 and is fixed with the power output end of the rotating motor 13, the microwave heater 14 is arranged at the bottom of the inner wall of the containing tank 11, and a plurality of exhaust holes are distributed in the drying tank 12;

the second fluidized bed drying system 2 comprises an air dehumidifier 21, a heater 22, a drying bin 23, a cyclone separator 24, a bag-type dust collector 25 and an exhaust fan 26 which are sequentially connected through pipelines; the drying bin 23 is provided with a second feeding hole and a second discharging hole, a porous plate 231 is arranged in the drying bin 23, a ventilation chamber 232 is arranged below the porous plate 231, the top end of the drying bin 23 is provided with a cover 233, an air outlet of the cover 233 is communicated with an air inlet of the cyclone separator 24, and an air inlet of the air dehumidifier 21 is communicated with the upper end of the containing tank 11;

the conveyer belt 3 is arranged between the first discharge hole and the second feed hole.

This embodiment is through the continuous drying operation of first microwave vacuum drying system 1 and second fluidized bed drying system 2, can effectually prevent the secondary dampening, and the process is continuous, drying effect is good, and be equipped with air dehumidifier 21 on second fluidized bed drying system 2, cyclone 24 and sack cleaner 25 can separate the humid air of material, and can get rid of powder impurity, it is good to material drying effect, the cleanliness factor is high, this novel long service life and easy maintenance of use, production efficiency has been improved.

As shown in fig. 3, a control device is further disposed outside the accommodating tank 11 in this embodiment, the control device includes a main control module, a temperature sensor, a time controller, and a data acquisition module, wherein the temperature sensors are disposed on the outer wall of the drying tank 12 and the drying chamber 23, the temperature sensors transmit the detected temperatures in the drying tank 12 and the drying chamber 23 to the data acquisition module, and the main control module outputs power of the microwave heater 14 and the heater 22 according to the received temperature signals; in the design, the main control module controls the output power of the microwave generator to realize the adjustment of the drying temperature of the materials, so that the drying effect of the materials is optimal, the quality of dried food is improved, and the main control module can also control the opening and closing of the first feeding hole and the first discharging hole of the containing tank 11 according to the time controller.

The utility model discloses, the drying can 12 is the cylinder, is equipped with the material tray 121 perpendicularly every 20-30cm on the axis direction of the inner wall of drying can 12, and the upside of material tray 121 is equipped with at least one and separates the material layer 122, and the outermost outer fringe that separates the material layer 122 is the material can inner wall, separates and arranges at least 4 baffles 123 in the material layer 122, and adjacent baffle 123 and material tray 121 form a cavity unit in every separates the material layer 122; the partition plates 123 on the adjacent material trays 121 are in one-to-one correspondence, and the partition plates 123 on the same material tray 121 are in one-to-one correspondence in the radial direction.

In the specific embodiment, the drying tank 12 is a cylinder, the material trays 121 are vertically arranged at intervals of 30cm in the axis direction of the inner wall of the drying tank 12, 2 material separating layers 122 are arranged on the upper side of the material trays 121, the outer edge of the outermost material separating layer 122 is the inner wall of the material tank, 5 partition plates 123 are arranged in the material separating layer 122, and a cavity unit is formed between the adjacent partition plate 123 in each material separating layer 122 and the material tray 121; the partition plates 123 on the adjacent material trays 121 are in one-to-one correspondence, and the partition plates 123 on the same material tray 121 are in one-to-one correspondence in the radial direction.

In this embodiment, the plurality of material trays 121, the material separating layer 122, and the partition plate 123 make the material move in a downward spiral manner along with the rotation of the drying tank 12, so as to increase the moving distance of the material, properly prolong the drying time of the material, and improve the drying quality; meanwhile, the collision space of the materials is reduced, the breakage rate of the materials is reduced, and the drying yield is improved.

In this embodiment, a first support frame 111 and a second support frame 112 are oppositely arranged in the radial direction of the middle portion of the inner wall of the accommodating tank 11, the first support frame 111 is obliquely arranged above the second support frame 112, the length of the base of the first support frame 111 is greater than that of the base of the second support frame 112, so that the drying tank 12 is inclined downward, and rollers tangent to the outer side of the drying tank 12 are connected to the bases of the first support frame 111 and the second support frame 112.

In this embodiment, the inclination angle of the drying tank 12 is 3 to 12 °.

The drying tank 12 is supported by the first support frame 111 and the second support frame 112, so that the reliability of the structure is improved; the inclination angle of the drying tank 12 in this embodiment is 8 degrees, so that the material moves downwards from the inlet of the material tank, and the material is heated uniformly.

In this embodiment, a plurality of air inlet duct inlets 234 are provided between the porous plate 231 and the ventilation chamber 232.

In this embodiment, the heater 22 is an electric heating tube heater or a hot water tube heater.

In the embodiment, a double drying system is adopted, the first microwave vacuum drying system 1 is utilized to realize primary rapid high-temperature drying on food, medicine and other materials with low moisture and without influence on the components of the food, the medicine and other materials with low moisture and after moisture regaining, the second fluidized bed drying system 2 is utilized to carry out secondary drying, and powder impurities of the materials are effectively separated, so that the materials are clean and are not easy to regain moisture;

in this embodiment, the exhaust fan 26 is used to extract the high-temperature gas in the first microwave vacuum drying system 1, so that even if the first microwave vacuum drying system 1 is in a nearly vacuum state, the high-temperature gas can be used to reduce the energy consumption of the second fluidized bed drying system 2;

the embodiment realizes continuous drying operation, and has high working efficiency, simple structure and low manufacturing cost.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments.

Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A microwave vacuum fluidized bed drying device is characterized by comprising

A first microwave vacuum drying system (1), the first microwave vacuum drying system (1) comprising a holding tank (11), a drying tank (12), a rotating motor (13) and a microwave heater (14); the containing tank (11) is provided with a first feeding hole and a first discharging hole, the power output end of the rotating motor (13) is arranged at one end of the containing tank (11) in a sealing and rotating mode, the inside of the containing tank (11) is rotatably connected with the drying tank (12) and is fixed with the power output end of the rotating motor (13), the microwave heater (14) is arranged at the bottom of the inner wall of the containing tank (11), and a plurality of exhaust holes are formed in the drying tank (12);

the second fluidized bed drying system (2), the second fluidized bed drying system (2) comprises an air dehumidifier (21), a heater (22), a drying bin (23), a cyclone separator (24), a bag-type dust collector (25) and an exhaust fan (26) which are sequentially connected through pipelines; the drying bin (23) is provided with a second feeding hole and a second discharging hole, a porous plate (231) is arranged in the drying bin (23), a ventilation chamber (232) is arranged below the porous plate (231), the top end of the drying bin (23) is provided with a cover (233), an air outlet of the cover (233) is communicated with an air inlet of the cyclone separator (24), and an air inlet of the air dehumidifier (21) is communicated with the upper end of the accommodating tank (11);

and the conveying belt (3) is arranged between the first discharge hole and the second feed hole.

2. The microwave vacuum fluidized bed drying device according to claim 1, wherein the drying tank (12) is a cylinder, material trays (121) are vertically arranged at intervals of 20-30cm in the axial direction of the inner wall of the drying tank (12), at least one material separating layer (122) is arranged on the upper side of each material tray (121), the outer edge of the outermost material separating layer (122) is the inner wall of the material tank, at least 4 separating plates (123) are arranged in each material separating layer (122), and a cavity unit is formed between the adjacent separating plate (123) in each material separating layer (122) and the material tray (121); the partition plates (123) on the adjacent material trays (121) are in one-to-one correspondence, and the partition plates (123) on the same material tray (121) are in one-to-one correspondence in the radial direction.

3. The microwave vacuum fluidized bed drying device according to claim 1, wherein a first support frame (111) and a second support frame (112) are oppositely arranged in a radial direction of the middle part of the inner wall of the accommodating tank (11), the first support frame (111) is arranged obliquely above the second support frame (112), the length of the base of the first support frame (111) is greater than that of the base of the second support frame (112), so that the drying tank (12) is inclined downwards, and rollers tangential to the outer side of the drying tank (12) are connected to the bases of the first support frame (111) and the second support frame (112).

4. A microwave vacuum fluidized bed drying apparatus according to claim 3, characterized in that the drying tank (12) is inclined at an angle of 3-12 °.

5. A microwave vacuum fluidized bed drying apparatus according to claim 1, characterized in that a plurality of air duct inlets (234) for air intake are provided between the perforated plate (231) and the ventilation chamber (232).

6. A microwave vacuum fluidized bed drying apparatus according to any one of claims 1-5, characterized in that the heater (22) is an electrothermal tube heater or a hot water tube heater.