CN201266007Y - Continuous microwave hot wind combined drying equipment - Google Patents

Abstract

The utility model discloses an energy-saving and high-efficiency continuous microwave hot air combined drying equipment, which comprises a material lifting device, a lower hopper auxiliary material device (4), an upper conveyor belt (5), a lower conveyor belt (6), a microwave box ( 9), the dehumidification device (10), the hot air device (7), the upper conveyor belt (5) and the lower conveyor belt (6) are arranged in parallel in the microwave cabinet (9), and the microwave cabinet (9) is provided with a microwave The pipe (8), the discharge port of the material lifting device is arranged above the lower hopper auxiliary device (4), the lower hopper auxiliary device (4) is located above the upper feeding end of the upper conveyor belt (5), and the upper conveyor belt (5) The discharge end is provided with a material guide plate (13), and the material guide plate (13) is located above the feed end of the lower conveyor belt (6), the moisture removal device (10) is arranged on the top of the microwave box (9), and the hot air device (7) is arranged on the bottom of microwave cabinet (9).

Description

Continuous microwave hot air combined drying equipment

technical field

The utility model relates to a microwave drying and sterilizing equipment for tanning sludge, in particular to a continuous microwave hot air combined drying equipment.

Background technique

The drying methods for tannery sludge in the prior art mainly include natural drying method and vacuum drying method. The advantages of natural drying method are low investment and low energy consumption. It is very practical for small tanneries located in rural areas and dry and sunny areas, but its disadvantages are: low dehydration efficiency, long drying cycle, large space occupation, It has an odor and attracts insects, etc., and when the sludge is laid in a thick thickness, it cannot be dried satisfactorily. In addition, this drying method is also easily restricted by natural climate conditions. Conventional vacuum drying equipment is used to dry the sludge. Since it is very difficult to transfer heat through convection in a vacuum, it can only be conducted by conduction. Therefore, the vacuum drying method has the defects of slow heating speed, long drying cycle and high energy consumption.

Contents of the invention

The technical problem to be solved by the utility model is to provide an energy-saving and high-efficiency continuous microwave hot-air combined drying equipment.

In order to solve the above technical problems, the utility model adopts the following technical solutions: a continuous microwave hot air combined drying equipment, including a material lifting device, a lower hopper auxiliary device, an upper conveyor belt, a lower conveyor belt, a microwave box, and a moisture removal device , hot air device, the upper conveyor belt and the lower conveyor belt are arranged in parallel in the microwave box, the microwave box is equipped with a microwave tube, the discharge port of the material lifting device is set above the lower hopper auxiliary material device, and the lower hopper auxiliary material device is located on the upper conveyor belt Above the feeding end of the upper conveyor belt, there is a material guide plate at the discharge end of the upper conveyor belt, and the material guide plate is located above the feeding end of the lower conveyor belt. bottom of.

The beneficial effects of the utility model continuous microwave hot air combined drying equipment are:

1. Energy-saving and high-efficiency: Conventional vacuum drying equipment, because it is very difficult to transfer heat through convection in a vacuum, it can only be conducted by conduction, the heating speed is slow, the drying cycle is long, and the energy consumption is large. Microwave hot air drying equipment uses radiation energy transfer, which is the overall heating of the medium, without other heat transfer media, avoiding the above shortcomings, so the speed is fast, the efficiency is high, the drying cycle is greatly shortened, and the energy consumption is reduced. Compared with conventional drying technology, the work efficiency can be improved by more than four times.

2. Uniform heating: Because microwave heating heats the inside and outside of the material at the same time, the temperature difference between the inside and outside of the material is small, and there will be no inconsistency between the inside and outside heating that occurs in conventional heating, and the drying quality is greatly improved.

3. Easy to control: Due to the characteristics of rapid adjustment of microwave power and no inertia, it is easy to control in time, and it is convenient for adjustment and determination of process parameters.

4. The equipment has a large capacity, which can effectively save time and improve work efficiency.

5. Good product quality: Compared with conventional methods, the processed product quality has been greatly improved.

6. The continuous microwave hot air combined drying equipment of this utility model has the effect of disinfection and sterilization, and the product is safe and hygienic.

7. It can prevent mildew and moth, and extend the shelf life.

8. Environmental protection: The utility model continuous microwave hot air combined drying equipment will not produce "three wastes" (exhaust gas, waste water, waste residue).

9. Due to the use of double-layer conveyor belts, the floor area of the equipment can be minimized, and the absorption load in the microwave drying and sterilization box can be increased, which is more conducive to the matching of microwaves, so that the energy can be fully utilized.

10. Due to the addition of a hot air device, the traditional heating and drying method can be organically combined with the microwave heating and drying method, which can make the advantages of the two drying methods complement each other and improve the drying efficiency.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Description of drawings

Fig. 1 is the overall structure schematic diagram of an embodiment of the continuous microwave hot air combined drying equipment of the present invention;

Fig. 2 is a top view of the continuous microwave hot air combined drying equipment in Fig. 1 .

Detailed ways

As shown in Figure 1 and Figure 2, an embodiment of the continuous microwave hot air combined drying equipment of the present invention includes a material lifting device, a lower hopper auxiliary material device 4, an upper conveyor belt 5, a lower conveyor belt 6, and a microwave box 9 , dehumidifying device 10, hot air device 7, described material lifting device is made up of hopper 1, hoisting belt 2, speed-regulating motor 3, and the feeding end of hoisting belt 2 is positioned at the bottom of hopper 1, and hoisting belt 2 is controlled by speed-regulating motor 3 drive, the discharge end of the lifting belt 2 is located above the lower hopper auxiliary material device 4, the upper conveyor belt 5 and the lower conveyor belt 6 are arranged in parallel in the microwave box 9, and the upper conveyor belt 5 and the lower conveyor belt 6 pass through the microwave respectively. The ceramic idler 11 in the box 9 is driven, and the microwave box 9 is provided with a microwave tube 8. The discharge port of the lifting device is set above the lower hopper auxiliary material device 4, and the lower hopper auxiliary material device 4 is located on the upper conveyor belt 5. Above the feed end, the discharge end of the upper conveyor belt 5 is provided with a material guide plate 13, the material guide plate 13 is located above the feed end of the lower conveyor belt 6, the moisture removal device 10 is arranged on the top of the microwave box 9, and the hot air device 7 It is arranged at the bottom of the microwave box body 9. In order to prevent microwave leakage, the microwave box 9 is provided with microwave suppressors 12 at the entrances and exits of the upper conveyor belt 5 and the lower conveyor belt 6 respectively. In order to better improve the drying efficiency, microwave tubes 8 are respectively provided on the top and bottom of the microwave box 9 . In order to be able to adapt to continuous and uninterrupted operations, the side of the microwave box 9 is provided with a circulating water cooling device 14, which adopts a circulating water cooling method to completely solve the problem of heat dissipation in the work of the magnetron and transformer connected to the microwave tube 8 , heat does not accumulate, ensure that the working state of the transformer and magnetron does not shift, ensure its output efficiency and ensure long-term continuous and uninterrupted work, and better solve the problem of excessive temperature in the production environment.

The working principle of the utility model continuous microwave hot air combined drying equipment is: microwave is a kind of non-ionized electromagnetic energy, which propagates at the speed of light of 3×105km per second, and its frequency range is: 3×102 to 3×105MHZ. The dissipation of microwave to the sample is realized by two mechanisms of dipole molecular rotation and ion conduction. Molecules move through ion migration and rotation of polar molecules, but do not cause changes in the internal structure of the molecules. The molecules of the substance to be acted on change from relatively static to dynamic instantaneously, that is, after polar molecules receive microwave radiation energy, thermal effects are generated by molecular dipoles rotating at a high speed billions of times per second. Water is a typical polar molecule, which has a strong dissipation and absorption effect on microwaves, and the temperature rises rapidly in the electromagnetic field. Therefore, the water in tannery sludge can be evaporated and removed under microwave irradiation. The hot air device uses electricity as the energy source, heats the air in the blower box, and circulates the hot air to take the moisture evaporated by the microwave out of the oven from bottom to top.

The working process of the utility model continuous microwave hot air combined drying equipment is: the raw material is lifted from the hopper 1 to the lower hopper auxiliary material device 4 through the lifting belt 2, and the material is evenly spread on the upper conveyor belt 5 by the lower hopper auxiliary material device 4, and enters the microwave oven. The box body 9 is heated by microwave and hot air at the same time, the material reaches the discharge end of the upper conveyor belt 5, and the material is evenly spread on the lower conveyor belt 6 by the material guide plate 13, and then enters the microwave box 9 again, and the dried material When arriving at the discharge end of the lower conveyor belt 6, the material is guided into the material receiver by the discharge guide plate, and the material is dragged to the next process by the trolley.

Claims (9)

1, a kind of continuous-type microwave hot air combined drying equipment, it is characterized in that: comprise and carry materials device, hopper auxiliary material device (4), upper strata conveyer belt (5), conveying belt of lower floor (6), microwave casing (9), humidity-discharging device (10), hot air apparatus (7), upper strata conveyer belt (5) and conveying belt of lower floor (6) are set in parallel in the microwave casing (9), be provided with microwave tube (8) in the microwave casing (9), the discharging opening of carrying materials device is arranged on the top of hopper auxiliary material device (4), hopper auxiliary material device (4) is positioned at the material loading end top of upper strata conveyer belt (5), the discharge end of upper strata conveyer belt (5) is provided with stock guide (13), stock guide (13) is positioned at the material loading end top of conveying belt of lower floor (6), humidity-discharging device (10) is arranged on the top of microwave casing (9), and hot air apparatus (7) is arranged on the bottom of microwave casing (9).

2, continuous-type microwave hot air combined drying equipment according to claim 1 is characterized in that: described microwave casing (9) is respectively equipped with microwave TVS (12) at the import and export of upper strata conveyer belt (5) and conveying belt of lower floor (6).

3, continuous-type microwave hot air combined drying equipment according to claim 1 and 2 is characterized in that: the top of described microwave casing (9) and bottom are respectively equipped with microwave tube (8).

4, continuous-type microwave hot air combined drying equipment according to claim 1 and 2 is characterized in that: the side of described microwave casing (9) is provided with circulating water cooling device (14).

5, continuous-type microwave hot air combined drying equipment according to claim 3 is characterized in that: the side of described microwave casing (9) is provided with circulating water cooling device (14).

6, continuous-type microwave hot air combined drying equipment according to claim 1 and 2, it is characterized in that: the described materials device of carrying is made up of hopper (1), elevator belt (2), buncher (3), the material loading end of elevator belt (2) is positioned at the bottom of hopper (1), elevator belt (2) is driven by buncher (3), and the discharge end of elevator belt (2) is positioned at the top of hopper auxiliary material device (4).

7, continuous-type microwave hot air combined drying equipment according to claim 3, it is characterized in that: the described materials device of carrying is made up of hopper (1), elevator belt (2), buncher (3), the material loading end of elevator belt (2) is positioned at the bottom of hopper (1), elevator belt (2) is driven by buncher (3), and the discharge end of elevator belt (2) is positioned at the top of hopper auxiliary material device (4).

8, continuous-type microwave hot air combined drying equipment according to claim 4, it is characterized in that: the described materials device of carrying is made up of hopper (1), elevator belt (2), buncher (3), the material loading end of elevator belt (2) is positioned at the bottom of hopper (1), elevator belt (2) is driven by buncher (3), and the discharge end of elevator belt (2) is positioned at the top of hopper auxiliary material device (4).

9, continuous-type microwave hot air combined drying equipment according to claim 5, it is characterized in that: the described materials device of carrying is made up of hopper (1), elevator belt (2), buncher (3), the material loading end of elevator belt (2) is positioned at the bottom of hopper (1), elevator belt (2) is driven by buncher (3), and the discharge end of elevator belt (2) is positioned at the top of hopper auxiliary material device (4).

Images