阅读说明：本技术 一种基于石墨烯远红外加热的振动床干燥实验装置 (Vibrating bed drying experimental device based on graphene far-infrared heating ) 是由 颜建春 谢焕雄 魏海 吴惠昌 游兆延 张会娟 高学梅 刘敏基 王建楠 杜元杰 于 2021-08-13 设计创作，主要内容包括：本发明公开一种基于石墨烯远红外加热的振动床干燥实验装置,下辐照加热板安装在干燥室内底部,干燥室通过振动弹簧连接于底座,上辐照加热机构通过调节螺杆连接于干燥室,排湿机构连接在上辐照加热机构上方,干燥室底板固定有振动电机,调节螺杆调节上辐照加热机构和下辐照加热板之间的距离；待烘干物料铺设于下辐照加热板上,控制系统中PID控制器给第一石墨烯远红外辐照板和第二石墨烯远红外辐照板通电加热物料,控制系统中第一变频调速器开启振动电机并以所需频率振动,控制系统中第二变频调速器控制离心风机将湿空气排出。本发明通过石墨烯远红外辐照板对经振动抛掷后离散状物料进行远红外辐照加热,加热均匀、能够充分提高烘干品质。(The invention discloses a vibrating bed drying experimental device based on graphene far-infrared heating.A lower irradiation heating plate is arranged at the bottom in a drying chamber, the drying chamber is connected to a base through a vibration spring, an upper irradiation heating mechanism is connected to the drying chamber through an adjusting screw rod, a moisture discharging mechanism is connected above an upper irradiation heating mechanism, a vibrating motor is fixed on a bottom plate of the drying chamber, and the adjusting screw rod adjusts the distance between the upper irradiation heating mechanism and the lower irradiation heating plate; the material to be dried is laid on the lower irradiation heating plate, the PID controller in the control system energizes the first graphene far infrared irradiation plate and the second graphene far infrared irradiation plate to heat the material, the first variable frequency speed regulator in the control system starts the vibration motor and vibrates at a required frequency, and the second variable frequency speed regulator in the control system controls the centrifugal fan to discharge wet air. According to the invention, the graphene far infrared irradiation plate is used for carrying out far infrared irradiation heating on the dispersed materials after vibration throwing, the heating is uniform, and the drying quality can be fully improved.)

1. The utility model provides a dry experimental apparatus of vibration bed based on graphite alkene far infrared heating which characterized in that: comprises a base, a drying chamber, a lower irradiation heating plate, an upper irradiation heating mechanism and a dehumidifying mechanism;

the drying chamber is connected to the upper end of the base through a plurality of vibrating springs, the opening of the drying chamber is upward, the lower irradiation heating plate comprises a first graphene far infrared irradiation plate, the lower irradiation heating plate is installed at the bottom of the drying chamber, and a vibrating motor is fixed on the back of the bottom plate of the drying chamber;

the upper irradiation heating mechanism is connected above the drying chamber through a plurality of adjusting screws, two second graphene far infrared irradiation plates are arranged at the bottom of the upper irradiation heating mechanism, and are parallel to the lower irradiation heating plate and opposite to the irradiation surface of the lower irradiation heating plate;

the dehumidifying mechanism is arranged above the upper irradiation heating mechanism and comprises a dehumidifying air pipe and a centrifugal fan, an air inlet of the dehumidifying air pipe is positioned between the two second graphene far infrared irradiation plates, the centrifugal fan is arranged above the dehumidifying air pipe, and an air outlet of the dehumidifying air pipe is communicated with an air inlet of the centrifugal fan;

the adjusting screw rod adjusts the distance between the upper irradiation heating mechanism and the lower irradiation heating plate; the method comprises the following steps that materials to be dried are laid on a lower irradiation heating plate in a drying chamber, a PID (proportion integration differentiation) controller in a control system is used for electrifying a first graphene far infrared irradiation plate and a second graphene far infrared irradiation plate and heating the materials at a certain power or temperature; starting and controlling a vibration motor to vibrate at a required frequency by a first variable-frequency speed regulator in a control system; and the second variable-frequency speed regulator in the control system is used for starting and controlling the centrifugal fan to discharge the wet air at the required humidity-discharging wind speed.

2. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: the drying chamber is integrally in a cuboid shape with an upward opening, and further comprises a bottom plate and two pairs of side wall plates, wherein one pair of side wall plates is provided with a discharge door, and one of the other pair of side wall plates is provided with an observation window; a first graphene far infrared irradiation heating plate is installed above a bottom plate in the drying chamber, and a vibration motor is fixed below the bottom plate through a mounting plate.

3. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: the vibration springs are respectively arranged at four corners of the bottom of the drying chamber, and the other end of each vibration spring is respectively fixed on the base corresponding to the four corners; rubber pads are arranged on the four corners of the drying chamber and the four corners of the base.

4. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: go up the irradiation heating mechanism and include that two sets of support standpipe and two sets of supports are violently managed, constitute the cuboid frame, second graphite alkene far infrared irradiation board is laid in cuboid frame lower surface through fixed panel, sets up the heat preservation between second graphite alkene far infrared irradiation board and the fixed panel.

5. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 4, wherein: and a centrifugal fan is fixed on the upper surface of the cuboid frame of the upper irradiation heating mechanism.

6. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 4, wherein: four corners of the outer side of the upper irradiation heating mechanism and the outer side of the drying chamber are respectively provided with a fixing plate, and adjusting screws are installed in a one-to-one correspondence mode through the fixing plates.

7. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: and a temperature and humidity sensor is arranged at the air outlet of the centrifugal fan.

8. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: and the upper irradiation heating mechanism is also provided with a handle.

9. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: the drying chamber bottom still is fixed with the reinforced pipe, still is provided with the axle sleeve on the drying chamber lateral wall, through the axle sleeve connection discharge door.

10. The vibrating bed drying experimental device based on graphene far-infrared heating of claim 1, wherein: the first graphene far infrared irradiation plate and the second graphene far infrared irradiation plate are packaged by organic glass.

Technical Field

The invention belongs to the field of drying mechanical equipment, and particularly relates to a vibrating bed drying experimental device based on graphene far-infrared heating.

Background

The infrared drying is widely applied to agricultural product drying, and compared with the traditional hot air drying, the infrared drying has the characteristics of high drying speed, high energy efficiency, good appearance of the dried agricultural product and good nutrient component retentivity. However, the traditional far infrared heating device mostly adopts catalyst far infrared, and gas combustion heating special materials are adopted to hasten the generation of far infrared rays, so that the structure of the mode is complex, the cost is high, the safety is low, and the device is difficult to apply to heating and drying equipment with high-speed vibration requirements and the like. And the other type is a lamp tube type far infrared emitting device, and due to the cylindrical appearance, the device has low applicability to occasions with the requirement of plane uniform irradiation working conditions, and the problems of uneven drying and low quality are easy to occur.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to solve the defects in the prior art and provides a vibration bed drying experimental device based on graphene far-infrared heating.

The technical scheme is as follows: the invention relates to a vibrating bed drying experimental device based on graphene far-infrared heating, which comprises a base, a drying chamber, a lower irradiation heating plate, an upper irradiation heating mechanism and a dehumidifying mechanism, wherein the base is provided with a heating chamber; the drying chamber is connected to the upper end of the base through a plurality of vibrating springs, the opening of the drying chamber is upward, the lower irradiation heating plate comprises a first graphene far-infrared irradiation plate, the lower irradiation heating plate is installed at the bottom of the drying chamber (namely the first graphene far-infrared irradiation plate is arranged above a bottom plate of the drying chamber and is attached to the bottom plate), and a vibrating motor is fixed on the back of the bottom plate of the drying chamber;

the upper irradiation heating mechanism is connected above the drying chamber through a plurality of adjusting screws, two second graphene far infrared irradiation plates are arranged at the bottom of the upper irradiation heating mechanism, and are parallel to the lower irradiation heating plate and opposite to the irradiation surface of the lower irradiation heating plate; the first graphene far infrared irradiation plate and the two second graphene far infrared irradiation plates jointly dry the discrete materials between the first graphene far infrared irradiation plate and the two second graphene far infrared irradiation plates;

the dehumidifying mechanism is arranged above the upper irradiation heating mechanism and comprises a dehumidifying air pipe and a centrifugal fan, an air inlet of the dehumidifying air pipe is positioned between the two second graphene far infrared irradiation plates, the centrifugal fan is arranged above the dehumidifying air pipe, and an air outlet of the dehumidifying air pipe is communicated with an air inlet of the centrifugal fan; the water evaporated from the material is discharged through the centrifugal fan, but the material cannot be sucked out due to overlarge wind power.

The adjusting screw rod adjusts the distance between the upper irradiation heating mechanism and the lower irradiation heating plate; the method comprises the following steps that materials to be dried are laid on a lower irradiation heating plate in a drying chamber, a PID (proportion integration differentiation) controller in a control system is used for electrifying a first graphene far infrared irradiation plate and a second graphene far infrared irradiation plate and heating the materials at a certain power or temperature; starting and controlling a vibration motor to vibrate at a required frequency by a first variable-frequency speed regulator in a control system; and the second variable-frequency speed regulator in the control system is used for starting and controlling the centrifugal fan to discharge the wet air at the required humidity-discharging wind speed.

Furthermore, the whole drying chamber is in a cuboid shape with an upward opening, and further comprises a bottom plate and two pairs of side wall plates, wherein a discharge door is arranged on one side wall plate, and an observation window (used for observing the motion state of the materials in the drying chamber) is arranged on one side wall plate of the other pair of side wall plates; the vibrating motor is fixed below the back of the bottom plate through a mounting plate.

Further, a lower irradiation heating plate (namely, a first graphene far infrared irradiation heating plate) is installed at the bottom of the drying chamber.

Furthermore, the vibration springs are respectively arranged at four corners of the bottom of the drying chamber, and the other end of each vibration spring is respectively fixed on the base corresponding to the four corners; rubber pads are arranged on the four corners of the drying chamber and the four corners of the base.

Further, go up the irradiation heating mechanism and include that two sets of support risers and two sets of support violently manage, constitute the cuboid frame, second graphite alkene far infrared irradiation board is laid in cuboid frame lower surface through fixed panel, sets up the heat preservation between second graphite alkene far infrared irradiation board and the fixed panel.

Furthermore, the dehumidifying mechanism comprises a dehumidifying air pipe and a centrifugal fan, wherein an air inlet of the dehumidifying air pipe is located between the two second graphene far infrared irradiation plates, and the centrifugal fan is arranged on the upper surface of the cuboid frame.

Further, a centrifugal fan is fixed on the upper surface of the cuboid frame of the upper irradiation heating mechanism.

Furthermore, four corners of the outer side of the upper irradiation heating mechanism and the outer side of the drying chamber are respectively provided with a fixing plate, and adjusting screws are correspondingly arranged on the fixing plates one by one.

Further, a temperature and humidity sensor is arranged at an air outlet of the centrifugal fan.

Further, a handle is further installed on the upper irradiation heating mechanism.

Furthermore, the bottom of the drying chamber is also fixed with a reinforced pipe, and the side wall of the lower irradiation heating and drying chamber is also provided with a shaft sleeve (used for connecting a discharge door).

Further, first graphite alkene far infrared irradiation board and second graphite alkene far infrared irradiation board all adopt organic glass encapsulation.

Has the advantages that: compared with the prior art, the invention has the following advantages:

(1) according to the invention, the graphene far infrared irradiation plate is used for carrying out far infrared irradiation heating on the vibrated discrete material, so that the cost is low, the heating is uniform, and the drying quality can be fully improved.

(2) The distance between the upper irradiation heating mechanism and the drying chamber can be adjusted through the adjusting screw, namely the distance between the first graphene far infrared irradiation plate and the second graphene far infrared irradiation plate is adjustable, so that the optimal drying effect can be obtained.

(3) The invention can respectively control and adjust the frequency of the vibrating motor and the rotating speed of the centrifugal fan through the first variable-frequency speed regulator and the second variable-frequency speed regulator so as to adapt to different vibration frequencies and dehumidifying air speed requirements.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a front view of the drying chamber in the embodiment;

FIG. 4 is a perspective view of a drying chamber in the embodiment;

FIG. 5 is a schematic view illustrating an installation of a first graphene far-infrared irradiation plate in the embodiment;

FIG. 6 is a schematic view of an upper irradiation plate installation in the embodiment;

FIG. 7 is a schematic view of a dehumidifying mechanism in an embodiment;

FIG. 8 is a side view of the dehumidifying mechanism in the embodiment.

Detailed Description

The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.

As shown in fig. 1 and fig. 2, the vibrating bed drying experimental apparatus based on graphene far-infrared heating of the present embodiment includes a base 5, a drying chamber 3, a lower irradiation heating plate 10, an upper irradiation heating mechanism 1, and a dehumidifying mechanism; the drying chamber 3 is connected to the upper end of the base 5 through a plurality of vibrating springs 4, the opening of the drying chamber 3 is upward, the lower irradiation heating plate 10 (namely, the first graphene far infrared irradiation plate) is installed at the bottom in the drying chamber 3, and the back of the bottom plate of the drying chamber 3 is fixedly provided with a vibrating motor 6; the upper irradiation heating mechanism 1 is connected above the drying chamber 3 through a plurality of adjusting screws 2, two second graphene far infrared irradiation plates 17 are arranged at the bottom of the upper irradiation heating mechanism 1, and the two second graphene far infrared irradiation plates 17 are parallel to the lower irradiation heating plate 10 and opposite to the irradiation surface of the lower irradiation heating plate 10; the first graphene far infrared irradiation plate 10 and the two second graphene far infrared irradiation plates 17 dry discrete materials between the first graphene far infrared irradiation plate and the second graphene far infrared irradiation plates; the dehumidifying mechanism is arranged above the upper irradiation heating mechanism 1 and comprises a dehumidifying air pipe 21 and a centrifugal fan 19, an air inlet of the dehumidifying air pipe 21 is positioned between the two second graphene far infrared irradiation plates 17, the centrifugal fan 19 is arranged above the dehumidifying air pipe 21, and an air outlet of the dehumidifying air pipe 21 is communicated with an air inlet of the centrifugal fan 19; the water evaporated from the material is discharged through the centrifugal fan 19, but the material is not sucked out due to overlarge wind power. The adjusting screw 2 adjusts the distance between the upper irradiation heating mechanism 1 and the lower irradiation heating plate 10; the materials to be dried are uniformly laid on the lower irradiation heating plate 10 in the drying chamber 3, the first graphene far infrared irradiation plate 10 and the second graphene far infrared irradiation plate 17 are electrified through a PID controller in a control system, and the materials are heated at a certain power or temperature; the vibration motor 6 is started and controlled to vibrate at a required frequency by a first variable frequency speed regulator in a control system; the second variable frequency speed regulator in the control system is used for starting and controlling the centrifugal fan 19 to discharge the wet air at the required humidity discharging speed.

As shown in fig. 3 and 4, the drying chamber 3 of the present embodiment is a cuboid with an upward opening, and further includes a bottom plate and two pairs of side wall plates (a pair of large wall plates 16 and a pair of small wall plates 15), the pair of small wall plates 15 are provided with the discharge door 7, one large wall plate 16 is provided with an observation window 14, and the observation window 14 is made of a glass plate, so that an operator can observe the movement state of the material in the drying chamber 3 in real time under the vibration state; in order to enhance the stability of the device, the vibration motor 6 is fixed under the base plate (i.e., on the back of the base plate) by a mounting plate 9.

In this embodiment, the vibrating springs 4 are respectively disposed at four corners of the bottom of the drying chamber 3, and the other end of each vibrating spring 4 is respectively fixed on the base 5 corresponding to the four corners; rubber pads 12 are provided on the four corners of the drying chamber 3 and the four corners of the base 5. The vibration motor 6 is started to drive the drying chamber 3 to vibrate, the vibration force is increased through the vibration spring 4, so that materials are distributed between the first graphene far infrared irradiation plate 10 and the second graphene far infrared irradiation plate 17 in a discrete manner, far infrared rays are irradiated on each material as far as possible, and the effect of uniform drying is achieved; the rubber pad 12 is provided to fix the vibration spring 4.

As shown in fig. 5 and 6, the upper irradiation heating mechanism 1 includes two sets of vertical support pipes 20 and two sets of horizontal support pipes 22, forming a rectangular parallelepiped frame, and the second graphene far infrared irradiation plate 17 is laid on the lower surface of the rectangular parallelepiped frame through the fixing panel 25. An insulating layer is arranged between the second graphene far infrared irradiation plate 17 and the fixed panel 25. Four corners at the top of the upper irradiation heating mechanism 1 are respectively provided with a first fixing plate 18, four corners outside the drying chamber 3 are respectively provided with a second fixing plate 11, and the adjusting screws 2 are correspondingly installed on the first fixing plates 18 and the second fixing plates 11 one by one.

As shown in fig. 7 and 8, the dehumidifying mechanism is disposed above the upper irradiation heating mechanism, and includes a dehumidifying air pipe 21 and a centrifugal fan 19, an air inlet of the dehumidifying air pipe 21 is located between the two second graphene far-infrared irradiation plates 17, an air outlet of the dehumidifying air pipe 21 is connected to an air inlet of the centrifugal fan 19, and the centrifugal fan 19 is disposed on the rectangular frame.

For in time knowing the material stoving condition in the drying chamber 3, centrifugal fan 19's air outlet department is furnished with temperature and humidity sensor 24, can know the material condition in the current drying chamber 3 through gathering exhaust air temperature and humidity, provides the reference for adjusting 6 frequencies of vibrating motor, 19 rotational speeds of centrifugal fan and the irradiation power or the heating temperature of first graphite alkene far infrared irradiation board 10 and second graphite alkene far infrared irradiation board 17.

For the convenience of loading and carrying, the upper radiation heating mechanism 1 is also provided with a handle 23.

The bottom of the drying chamber 3 is also fixed with a reinforced pipe 8, and the side wall of the drying chamber 3 is also provided with a discharge door 7.

The specific working principle of the invention is as follows:

screws of the adjusting screw rods 2 on the upper irradiation heating mechanism 1 are unscrewed, the upper irradiation heating mechanism 1 is lifted through handles 23 at two ends, agricultural product materials (grains, oil, fruits and vegetables and the like) to be dried are put into the drying chamber 3, and are flattened through the scraper. Will go up irradiation heating mechanism 1 and reset, according to the interval demand of going up irradiation hot plate 10 and drying chamber 3 during the experiment, adjusting nut is in the position on adjusting screw 2 to screw up, make and go up irradiation heating mechanism 1 and drying chamber 3 and be connected firmly.

The first graphene far infrared irradiation plate 10 and the second graphene far infrared irradiation plate 17 are electrified and heated by irradiation with required power or temperature through a PID controller in the control system, and the first graphene far infrared irradiation plate 10 and the second graphene far infrared irradiation plate 17 form a drying cavity. And starting the vibration motor 6, and under the synergistic action of the vibration spring 4 and the vibration motor 6, the materials in the drying chamber 3 are vibrated, suspended and discrete, so that each material can receive infrared radiation to the maximum extent until being dried. The centrifugal fan 19 is started by a second variable frequency speed regulator in the control system and the wet air in the drying chamber 3 is discharged at the required wind speed through the wet air discharging pipe 21 and the centrifugal fan 19.

In the working process, the material condition of the drying chamber can be monitored through the observation window 14 of the glass plate; after the drying process is finished, the material is discharged from the discharge door 7.