Microwave drying device integrating preheating and strong wind heat dissipation
Technical Field
The utility model relates to a microwave heating technical field, in particular to collection is preheated and radiating microwave drying device of strong wind.
Background
The microwave heating technology is related technology for heating material based on the principle that the absorption of microwave energy by material is the result of the interaction between polar molecules in material and microwave electromagnetic field, and under the action of external alternating electromagnetic field, the polar molecules in material are polarized and alternate oriented with the change of polarity of external alternating electromagnetic field, so that many polar molecules are frequently rubbed and lost to convert electromagnetic energy into heat energy. The microwave heating is completely different from the traditional heating mode, and is a process of making the heated material itself be a heating body without heat conduction.
The traditional material heating method generally adopts heat generated by fuel combustion or electric energy to heat materials, and the defects of uneven heating, slow heat exchange speed, low heating efficiency and the like exist when the materials are heated by adopting the mode. The microwave heating can well solve the problems of uneven material heating and low heating efficiency, and simultaneously can well play a role in reducing energy consumption,
microwave heating device on the existing market generally adopts pure microwave heating device to heat the material, but the heat efficiency of this kind of device is not high, can not make full use of the heat that gives off in the microwave heating process, simultaneously, also is not good to the radiating effect in the material heating process, can not be timely with the material surface heat or the steam that gives off in the heating process in time get rid of, lead to heating effect not good.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a collection preheats and radiating microwave drying device of strong wind.
In order to realize the technical purpose, the technical scheme of the utility model is that:
the utility model provides a collection preheats and radiating microwave drying device of strong wind, includes:
the belt conveyor is used for conveying materials to be dried;
the preheating bin is arranged at the starting end of the belt conveyor, a feeding hopper is arranged above the preheating bin, a discharging port is formed in the bottom of the feeding hopper, and the discharging port is connected with the top of the preheating bin;
the microwave drying bin is fixedly connected with the preheating bin and arranged along the transmission direction of the belt conveyor, the belt conveyor penetrates through the microwave drying bin and comprises a plurality of microwave heating boxes which are sequentially arranged in a row and fixedly connected, and at least one microwave generator is fixed on the upper side in each microwave heating box;
the spiral distributing device is arranged at the joint of the preheating bin and the microwave drying bin and is used for uniformly distributing material flow on the belt conveyor;
the heat collecting device comprises a heat collecting pipe arranged at the top of the microwave drying bin, one end of the heat collecting pipe is fixedly connected with the top of the microwave drying bin, the other end of the heat collecting pipe is fixedly connected with the preheating bin, and a dehumidifying device and an axial flow fan are sequentially connected on the heat collecting pipe in series;
the strong air heat dissipation device comprises a plurality of strong air blowers arranged at the bottom of the microwave drying bin, and the strong air blowers are arranged below the belt conveyor and used for blowing air to dissipate heat of material flow transmitted to the belt conveyor from bottom to top;
the control cabinet is respectively connected with the belt conveyor, the microwave generator, the axial-flow fan or the strong fan, and control keys for controlling the start and stop of the belt conveyor, the microwave generator, the axial-flow fan or the strong fan are arranged on the control cabinet.
Further, the spiral distributing device comprises a frame body which is arranged at the bottom of the preheating bin and located on an upper layer belt of the belt conveyor, the frame body is fixed at the joint of the preheating bin and the microwave drying bin, one end, close to the microwave drying bin, of the frame body is rotatably connected with a spiral shaft, the spiral shaft is perpendicular to the transmission direction of the belt conveyor, a spiral is arranged on the outer wall of the spiral shaft, and the spiral shaft is connected with a driving device.
Furthermore, the driving device comprises a motor and a speed reducer, a driving gear is arranged on an output shaft of the speed reducer, a driven gear is connected to one end of the spiral shaft, the driving gear is meshed with the driven gear, and the spiral shaft is driven to rotate through the driving gear and the driven gear.
Further, dehydrating unit includes a dehumidification medium section of thick bamboo, the both ends of a dehumidification medium section of thick bamboo respectively with the thermal-collecting tube is connected, be equipped with moisture-absorbing medium in the dehumidification medium section of thick bamboo, moisture-absorbing medium includes one in calcium chloride, quick lime or the charcoal.
Furthermore, every the upper portion fixed mounting of microwave heating box has a division board, microwave generator installs the top of division board, the division board will the inner space partition of microwave heating box is the microwave generation district on upper portion and the microwave zone of heating of lower part, band conveyer runs through the microwave zone of heating.
Furthermore, a support frame for supporting the microwave heating box is arranged at the lower part of the microwave heating box, and two side plates are respectively arranged at two sides of the support frame.
Further, the bottom of the belt conveyor is provided with at least one vibrator, and the vibrator is arranged at the bottom of an upper-layer belt of the belt conveyor.
Further, the vibrator includes pillar, spring, vibration board, roller and vibrating motor, the vibration board sets up the below of band conveyer's upper belt, the top of vibration board is rotated and is connected with a plurality of rollers, the roller with band conveyer's upper belt's lower surface roll connection, the bottom fixed mounting of vibration board has vibrating motor, install respectively in the bottom both sides of vibration board the pillar, the vibration board with install between the pillar the spring, the upper and lower both ends of spring respectively with the vibration board or pillar fixed connection, the pillar is fixed on band conveyer's the frame or be fixed on the microwave heating box.
Furthermore, a kick-out device is arranged below the loading hopper and comprises a rotating shaft and kick-out claws, two ends of the rotating shaft are rotatably connected with the side wall of the loading hopper, and 3-4 kick-out claws are fixedly mounted on the rotating shaft.
The utility model has the advantages that:
the utility model discloses a collection is preheated and radiating microwave drying device of strong wind adopts the microwave heating technique to carry out drying process to the material, has energy-conservation, the heating is even, and the efficient characteristics of drying can realize the fast drying to the material through the microwave. This device is drying the material in-process, in time dispels the heat and dehumidifies the commodity circulation in the microwave drying storehouse to in returning the heat that gives off in the microwave drying storehouse to the storehouse of preheating, preheating the material in the storehouse of preheating, improve energy utilization. Meanwhile, the microwave drying bin of the device is formed by a plurality of continuously arranged microwave heating boxes, materials are transmitted in the microwave heating bin through the conveying device at one time, and the drying process can be completed, so that the device is efficient and energy-saving.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of the internal structure of the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vibrator according to an embodiment of the present invention;
FIG. 4 is a schematic view of the internal structure of a loading hopper according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a spiral distributor according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an observation window according to an embodiment of the present invention.
In the figure: 1-belt conveyer, 101-driving roller, 102-driven roller, 103-conveying belt 103, 104-carrier roller, 2-preheating bin, 3-charging hopper, 4-discharging port, 5-kick-out device, 6-microwave drying bin, 7-microwave heating box, 8-microwave generator, 9-supporting frame, 10-side plate, 11-separation plate, 12-spiral distributor, 13-frame, 14-spiral shaft, 15-spiral, 16-driving gear, 17-driven gear, 18-vibrator, 19-supporting column, 20-spring, 21-vibration plate, 22-ball, 23-vibration motor, 24-heat collecting pipe, 25-dehumidification device, 26-fan, 27-forced fan, 28-control cabinet, 29-observation window, 30-observation door and 31-handle.
Detailed Description
The present invention is further described below with reference to the drawings attached hereto, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby defining the scope of the present invention more clearly.
As shown in figures 1-6 of the drawings,
the utility model provides a collection preheats and radiating microwave drying device of strong wind, includes:
a band conveyer 1 for carrying out material transmission, band conveyer 1 includes the cylinder, bearing roller and conveyer belt, the conveyer belt is Teflon net conveyer belt, the cylinder includes initiative cylinder 101 and passive cylinder 102, the winding has conveyer belt 103 on initiative cylinder 101 and the driven cylinder 102, initiative cylinder 101 is connected with motor and speed reducer, initiative cylinder 101 and passive cylinder 102 set up the both ends at band conveyer 1, bearing roller 104 arranges the setting in proper order along band conveyer 1's direction of transmission, bearing roller 104 sets up the bottom of the upper belt of conveyer belt 103 and is used for bearing conveyer belt 103.
The preheating bin 2 is arranged at the starting end of the belt conveyor 1, a feeding hopper 3 is arranged above the preheating bin 2, a discharging port 4 is arranged at the bottom of the feeding hopper 3, and the discharging port 4 is connected with the upper end of the preheating bin; a kick-out device 5 is arranged below the charging hopper 3, the kick-out device 5 comprises a rotating shaft and kick-out claws, two ends of the rotating shaft are rotatably connected with the side wall of the charging hopper 3, and 3-4 kick-out claws are fixedly arranged on the rotating shaft. The pivot is connected with the rotation motor, and it is rotatory to drive pivot through rotating the motor to drive setting gauge 5 rotatory, dial the material, make the material can be smooth fall into preheating bin 2 from discharge gate 4 of loading hopper 3.
The microwave drying bin 6 is fixedly connected with the preheating bin 2 and arranged along the transmission direction of the belt conveyor 1, the belt conveyor penetrates through the microwave drying bin 6, the microwave drying bin 6 comprises a plurality of microwave heating boxes 7 which are sequentially arranged in a row and fixedly connected, and at least one microwave generator 8 is fixed on the upper side inside each microwave heating box 7; the microwave generator 8 comprises a microwave tube and a microwave tube power supply, wherein the microwave tube power supply is used for converting common alternating current power into direct current power so as to create conditions for the operation of the microwave tube. The microwave tube is the core of a microwave generator, and can provide stable continuous wave microwave power by converting direct current electric energy into microwave energy. Microwave heating box 7 adopts the portion steel to make, and microwave heating box 7's inboard can set up the heated board, can be used for keeping the temperature in the microwave drying storehouse, improves drying efficiency.
The lower part of the microwave heating box 7 is provided with a supporting frame 9 for supporting the microwave heating box, two sides of the supporting frame 9 are respectively provided with a side plate 10, the bottom of the microwave heating box 7 can be sealed through the side plates 10 to keep the temperature, the safety of materials in the transmission process in a microwave drying bin can be improved, and people injury is prevented.
A partition plate 11 is fixedly installed at the upper portion of each microwave heating box 7, the microwave generator 8 is installed above the partition plate 11, and the partition plate 11 divides the internal space of the microwave heating box 7 into an upper microwave generating region and a lower microwave heating region. The microwave tube and the microwave tube power supply are arranged above the partition plate 11, a plurality of through holes can be arranged on the partition plate 11, and the microwave tube can pass through the through holes on the partition plate to carry out microwave heating on the microwave heating area at the bottom of the microwave heating box 7.
The spiral material distributor 12 is arranged at the joint of the preheating bin 2 and the microwave drying bin 6 and is used for uniformly distributing material flow on the belt conveyor 1; the spiral material distributor 12 comprises a frame body 13 which is arranged at the bottom of the preheating bin and is positioned on an upper belt of the belt conveyor 1, the frame body 13 is fixed at the joint of the preheating bin 2 and the microwave drying bin 6, one end of the frame body 13, which is close to the microwave drying bin 6, is rotatably connected with a spiral shaft 14, the spiral shaft 14 is connected with a driving device, the spiral shaft 14 is perpendicular to the transmission direction of the belt conveyor 1, and a spiral 15 is arranged on the outer wall of the spiral shaft 14.
The driving device comprises a motor and a speed reducer, a driving gear 16 is arranged on an output shaft of the speed reducer, a driven gear 17 is connected to one end of the spiral shaft 14, the driving gear 16 is meshed with the driven gear 17, and the spiral shaft 14 is driven to rotate through the driving gear 16 and the driven gear 17.
The bottom of the belt conveyor 1 is provided with at least one vibrator 18, the vibrator 18 being arranged at the bottom of the upper belt of the conveyor belt 103. The number of vibrators 18 is at least two.
The vibrator 18 comprises a support column 19, a spring 20, a vibration plate 21, rollers 22 and a vibration motor 23, wherein the vibration plate 21 is arranged below an upper-layer belt of the conveying belt 103, the rollers 22 are rotatably connected above the vibration plate 21, the rollers 22 are in rolling connection with the lower surface of the upper-layer belt of the conveying belt 103, the vibration motor 23 is fixedly arranged at the bottom of the vibration plate 21, the support columns 19 are respectively arranged on two sides of the bottom of the vibration plate 21, the spring 20 is arranged between the vibration plate 21 and the support columns 19, the upper end and the lower end of the spring 20 are respectively fixedly connected with the vibration plate 21 or the support columns 19, and the support columns 19 are fixed on a frame of the belt conveyor.
The heat collecting device comprises a heat collecting pipe 24 arranged at the top of the microwave drying bin 6, one end of the heat collecting pipe 24 is fixedly connected with the top of the microwave drying bin 6, the other end of the heat collecting pipe 24 is fixedly connected with the preheating bin 2, and a dehumidifying device 25 and an axial flow fan 26 are sequentially connected on the heat collecting pipe 24 in series; the dehumidifying device 25 comprises a dehumidifying medium cylinder, two ends of the dehumidifying medium cylinder are respectively connected with the heat collecting pipes 24, moisture absorbing media are arranged in the dehumidifying medium cylinder, and the moisture absorbing media comprise one of calcium chloride, quick lime or charcoal.
The strong wind heat dissipation device comprises a plurality of strong wind machines 27 arranged at the bottom of the microwave drying bin 6, wherein the strong wind machines 27 are arranged below the belt conveyor 1 and used for blowing and dissipating heat of material flows transmitted to the belt conveyor 1 from bottom to top;
the control cabinet 28 is respectively connected with the belt conveyor 1, the microwave generator 8, the axial-flow fan 26 or the strong fan 27, and a control key for controlling the start and stop of the belt conveyor 1, the microwave generator 8, the axial-flow fan 26 or the strong fan 27 is arranged on the control cabinet 28.
The utility model discloses a loading hopper 3 is emptyd the material to preheating in the storehouse 2, descends the in-process on band conveyer 1 at the material, preheats the material through transmitting the heat in preheating storehouse 2 in the collection tuber pipe 24, improves energy utilization.
After the material descends to belt conveyor 1, because thickness is inhomogeneous, consequently the material accumulates in framework 13 under the effect of spiral distributing device 12 to under the effect of rotation and spiral 15 through screw axis 14, with the material again enter into microwave drying storehouse 6 after evenly distributing on belt conveyor 1 and dry, the stoving effect is more even, and the effect is better. The uniformity of the material passing through microwave heating on the next step is improved, and the problem that the material is not high in product quality due to inconsistent product phase after passing through microwave heating caused by inconsistent heating of microwave heating is avoided.
After the materials are dried by the microwave drying bin 6, the materials are unloaded from the belt conveyor 1 after the microwave drying is finished, and the materials are boxed or bagged.
When the materials are dried by microwave, the strong air blower 27 blows air to the upper part of the belt conveyor 1 to blow away moisture on the surfaces of the materials, so that the heat dissipation of the surfaces of the materials is facilitated, meanwhile, the heat can enter the air collecting pipe 24, the strong air blows from the bottom of the belt conveyor 1 from bottom to top, and the strong air dehumidifies and dissipates the heat of the materials conveyed on the belt conveyor 1; under the action of the axial flow fan 26 on the heat collecting pipe 24, the hot air enters the preheating bin 2 through the heat collecting pipe 24 after being dehumidified to preheat the material.
Meanwhile, the bottom of the belt conveyor 1 is also provided with a vibrator 18, a vibration plate 21 of the vibrator 18 vibrates up and down under the action of a vibration motor 23 to vibrate the upper-layer conveying belt of the belt conveyor 1, and in order to enable the connection between the vibrator 18 and the conveying belt to be smoother, a roller 22 is rotatably connected above the vibration plate 21, and the roller 22 is in rolling connection with the upper-layer conveying belt; through the vibration of the vibrator 18, the materials on the belt conveyor 1 vibrate up and down in the conveying process, so that the effect of turning over the materials is achieved, and the materials can be dried more uniformly.
Meanwhile, in order to observe whether the device works normally or observe the drying quality of the materials at any time in the drying process of the materials,
an observation window 29 may be provided on a side wall inside the microwave heating box 7, and the height of the observation window 29 is the same as that of the upper layer conveyor belt of the belt conveyor 1. The observation window 29 is used for observing the working process in the microwave drying bin and monitoring whether the physical drying process is normal. The observation window 29 is provided with an observation door 30, the observation door 30 is hinged with the observation window 29, the observation window 29 is provided with a self-locking switch, the self-locking switch is connected with the control cabinet, when the observation door 30 is opened from the observation window 29, the self-locking switch is disconnected, and the control cabinet detects the disconnection of the self-locking switch to control the microwave drying device to stop.
The observation window 29 is provided with the observation door 30, the observation door 30 is in a closed state during normal work, the observation window 29 is provided with the self-locking switch, the self-locking switch is connected with the control cabinet, when the observation door 30 is closed on the observation window, the microwave heating device works normally, and when the observation door 30 is opened from the observation window 29, the control cabinet detects an opening signal of the self-locking switch and controls the microwave heating device to stop. Through set up self-locking switch on the observation window, when can avoiding the observation door to open, drying device starts and causes the injury to the staff.
The observation door 30 is provided with a high temperature resistant glass observation mirror, and the observation door 30 is also provided with a handle 31. The high temperature resistant glass on the observation door 30 is convenient for checking the working condition in the microwave drying bin, and the working condition in the microwave drying bin can be conveniently checked without opening the observation door 30.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Other technical features are known to those skilled in the art except for the technical features described in the specification, and are not described in detail herein in order to highlight the innovative features of the present invention.