CN103432757A

Movatterモバイル変換

Info

Publication number: CN103432757A
Application number: CN2013103983289A
Authority: CN
Inventors: 杨锐
Original assignee: CHANGZHOU MACRO-E ENERGY-SAVING TECHNOLOGY Co Ltd
Current assignee: CHANGZHOU MACRO-E ENERGY-SAVING TECHNOLOGY Co Ltd
Priority date: 2013-09-05
Filing date: 2013-09-05
Publication date: 2013-12-11

Abstract

The invention relates to the technical field of drying, and particularly discloses a thin layer drying method and drying equipment. The thin layer drying method comprises the following steps of a, adding water of 0 DEG C-100 DEG C in a water groove; b, covering a polyester film on the surface of the water in the water groove; and c, uniformly paving a wet material to be dried on the surface of the polyester film. The drying equipment applying the thin layer drying method comprises a type transport system module, a feeding module, a drying module, a cooling module, a material receiving module and a control system module. The thin layer drying method and the drying equipment provided by the invention have the advantages that the method is adopted to dry the material, a drying process is rapidly finished, the consumption of an energy source is greatly saved, the drying efficiency is improved, the market competitiveness of the equipment is also improved, the structure of the equipment which is manufactured through the drying method is simple, the using effect is good, and the intellectualization manufacture requirement is realized.

Description

Thin layer drying method and drying equipment

Technical field

The present invention relates to technical field of drying, especially a kind of thin layer drying method and drying equipment.

Background technology

The modern dry technology of China just grew up gradually from the fifties in 20th century.For the development of dry technology, exist three generally acknowledged indexs, i.e. drying process will guarantee product quality, and drying operation can not pollute environment, and dry run should realize energy-conservation purpose as far as possible.

Traditional drying equipment major part is all to adopt wet stock is placed on certain carrier at present, then by the mode that heats whole carrier, realizes drying.In this case, carrier surface is difficult to realize treating 100% all standing of dry wet stock, causes the waste without wet stock cover part heat energy, and heat utilization rate is lower.Other forms of drying means, such as spray-drying, to adopt atomizer that material liquid is separated into to droplet, and obtain a kind of drying means of product with hot gas (air, nitrogen or overheated steam) dry droplet, but when dry, hot air temperature is higher and directly contact with material, be difficult to guarantee the quality of product, and its energy consumption is higher.Freeze Drying Technique is the novel dried technology grown up gradually in recent years, and because of it, product quality is higher after dry receives much concern for Freeze Drying Technique, but energy consumption and serialization production problem become the bottleneck of its extensive industrial applications of restriction.Comprehensive most domestic drying equipment at present, also be difficult to realize the optimum organization of production assurance and environmental protection and energy saving.

Summary of the invention

Poor in order to overcome existing drying equipment drying effect, the deficiency that energy resource consumption is large, the invention provides a kind of thin layer drying method and drying equipment.

The technical solution adopted for the present invention to solve the technical problems is: a kind of thin layer drying method:

A, add the water of 0 ℃-100 ℃ in tank;

B, polyester film is covered on the surface of water in tank;

C, wet stock uniform spreading to be dried is located to polyester film surface;

Implement a kind of drying equipment of above-mentioned thin layer drying method, comprise formula induction system module, feed module, irradiation modules, refrigerating module, rewinding module and control system module.

According to another embodiment of the invention, further comprise, the carrier of described induction system module adopts polyester film, and polyester film is processed into to endless belt.

According to another embodiment of the invention, further comprise, described feed module is comprised of storage tank, feed pump and material-feeding mechanism.

According to another embodiment of the invention, further comprise, described irradiation modules is by tank, form with aqua storage tank and the wind-collecting cover of heating module.

According to another embodiment of the invention, further comprise, described refrigerating module is comprised of air intake blower fan, filter and exhaust fan.

According to another embodiment of the invention, further comprise, described rewinding module is comprised of scraper, siccative pulverizer and the temporary warehouse of product.

The invention has the beneficial effects as follows, adopt this method to carry out drying to material, can complete fast dry run, and saved greatly the consumption of the energy, improved dry efficiency, also improved the market competitiveness of equipment, and the equipment that corresponding this drying means is manufactured, simple in structure, result of use is good, and realizes intelligent requirement of producing.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is schematic diagram of the present invention;

Fig. 2 is device structure schematic diagram of the present invention.

The specific embodiment

As Fig. 1 is schematic diagram of the present invention, a kind of thin layer drying method:

A, add the water of 0 ℃-100 ℃ in tank;

B, polyester film is covered on the surface of water in tank;

As Fig. 2 is device structure schematic diagram of the present invention:

For better method and apparatus of setting forth this novel drying liquid state and pasty material (solution, emulsion, suspension can be also that fused solution or cream are stuck with paste liquid) product.The accompanying drawing explanation as shown in Figure 1, is the schematic diagram of new drying method principle:

This drying means comprises:

1, be full of water in tank, the water of tank also makes its temperature value that remains on a certain specific needs (0-100 ℃ under normal pressure).This temperature need to require to determine according to material attribute and the thermal sensitivity of wet stock 3.

2, a kind of polyester film is covered in to liquid surface in tank.This polyester film is under the effect of liquid buoyancy, surface tension and other external force, with the liquid surface close contact.This polyester film has good effect of heat insulation and infrared optics selective permeability.The polyester film that floats on liquid surface can be blocked liquid surface evaporation thermal energy consumption.Now the polyester film top is air, and infrared waves penetrate polyester film by optically denser medium directive optically thinner medium, easily produce total reflection, and now the penetrance of the infrared heat energy of polyester film is lower.And tank also has the insulation effect of heat-insulation layer, therefore greatly reduced heat energy to the scattering and disappearing of environment, thereby greatly reduced the loss of heat energy.

3, wet stock to be dried is arranged in to the polyester film upper surface uniformly.

4, due to the existence of wet stock on polyester film, allow infrared heat energy to penetrate polyester film to the wet stock transferring heat energy, order about hygroscopic water evaporation in wet stock and carry out drying, until obtain dry rear product.After product drying, the transmission of this infrared heat energy is blocked again, has reduced heat-energy losses, has realized the efficient utilization of heat energy.

For realizing the method, developed a kind of new drying equipment.This equipment comprises an aqua storage tank with heater, and the liquid in can heating water tank also remains on a certain predefined value by temperature.There is the one layer of heat preservation layer in this tank outside, can reduce the loss of liquid heat energy to environment.The film that this equipment is used, selected a kind of special flexible polyester film, this polyester film has good effect of heat insulation, mechanical performance and high temperature resistant property (are being set under fluid temperature, film can not produce shrink crooked with its other any type of damage) and anti-permeability performance, also there is good infrared optics penetrability.This polyester film is arranged on induction system, can under induction system driving effect, along the liquid upper surface, move through tank.Meanwhile, wet stock is evenly arranged in polyester film surface from tank one side, passes tank with polyester film, and carries out drying at this, at the tank opposite side, dried product is removed from polyester film, finally obtains dry products.

In order to adapt to the commercial running production requirement of this kind of drying means, develop a kind of corresponding drying equipment.As shown in Figure 2, this drying equipment mainly comprises several module sections: belt conveyor systems module, feed module, irradiation modules, refrigerating module, rewinding module and control system module.

The belt conveying module: this module is mainly in order to guarantee that polyester film can pass through tank continuously, incessantly, thereby meets the serialization production requirement of equipment.

Through a large amount of selections, we select a kind of very thin flexible polyester film as the wet stock delivery vehicle.This kind of mylar tape has good mechanical performance, abrasion resistance, anti-permeability performance, and under high-temperature condition, its distortion and shrinkage factor are less, have good effect of heat insulation, also have good infrared optics penetrability performance.Film can be made into a kind of endless belt through processing, but under induction system driving effect continuous operation, thereby realize the continuous operation of dry run.

During the undercoating liquid tank, the polyester film lower surface fully contacts with liquid level, can impel thermal energy transfer good between thermal medium and wet stock like this, and the assurance dry run is well carried out fast.For the place do not covered by wet stock, due to the heat-blocking action of polyester film, greatly reduce the heat-energy losses that thermal medium transmits to environment, improved the heat utilization rate of dry run.

Feed module: this module is mainly for being arranged on film of guaranteeing that wet stock can continuous uniform.Feed module mainly comprises storage tank, feed pump and material-feeding mechanism three parts.The dry wet stock for the treatment of after premenstrual finishing dealing with is temporary in storage tank, wet stock is sent into material-feeding mechanism under the feed pump effect, material-feeding mechanism is coated on wet stock on polyester film uniformly, then makes material enter arid region under polyester film is carried and carries out drying.

Irradiation modules: this module mainly completes the dry run of wet stock.Irradiation modules mainly comprises tank, with aqua storage tank, wind-collecting cover and some auxiliary devices of heating module.As a kind of aqua storage tank with heater of mentioning in the drying means introduction, in this equipment, we adopt separate type, comprise an aqua storage tank with heater and liquid tank.Thermal medium heats and remains on certain set temperature value through heating module in aqua storage tank, then through pumping action, enters tank, makes the liquid levels in tank remain on certain position.This position polyester film can with the liquid levels close contact.On polyester film, wet stock receives the heat energy from thermal medium, orders about the evaporation of wet stock hygroscopic water, and the moisture diffusion of evaporation is in the air of material top.Air with the evaporation hygroscopic water is pulled away under the effect of wind-collecting cover ventilating system.

Refrigerating module: this module is mainly for reducing the temperature that just completes dry rear product.From irradiation modules, the general temperature of material out is slightly higher, and in order to reduce the temperature of material, we have increased a refrigerating module.

The rewinding module: this module mainly completes dry products coming off and other post-processing function from film.Therefore the rewinding module should comprise a scraper, siccative pulverizer, the temporary warehouse of product and some auxiliary devices.Dry products after drying completes, under scraper and siccative pulverizer, effect, comes off and enters the temporary warehouse of product from film, waits for that next step process is processed.

The control system module: whole system adopts automatic control system, can realize the automation Detection & Controling of modules.

This Whole Equipment design adopts modular design method, can increase or reduce a certain module according to actual conditions, for meeting different customer demands, provides possibility and convenience.Simultaneously, all links of this equipment all can not produce environmental contaminants, thereby can there be problem of environmental pollution in equipment.This equipment adopts new drying method, also has energy-conservation clear superiority.The thermal medium temperature can be regulated according to the material attribute, thereby the dry products quality is guaranteed.

Claims

1. a thin layer drying method is characterized in that:

A, add the water of 0 ℃-100 ℃ in tank;

B, polyester film is covered on the surface of water in tank;

C, wet stock uniform spreading to be dried is located to polyester film surface.

2. a kind of drying equipment of enforcement thin layer drying method according to claim 1, is characterized in that, comprises formula induction system module, feed module, irradiation modules, refrigerating module, rewinding module and control system module.

3. a kind of drying equipment of enforcement thin layer drying method according to claim 2, is characterized in that, the carrier of described induction system module adopts polyester film, and polyester film is processed into to endless belt.

4. a kind of drying equipment of enforcement thin layer drying method according to claim 2, is characterized in that, described feed module is comprised of storage tank, feed pump and material-feeding mechanism.

5. a kind of drying equipment of enforcement thin layer drying method according to claim 2, is characterized in that, described irradiation modules is by tank, form with aqua storage tank and the wind-collecting cover of heating module.

6. a kind of drying equipment of enforcement thin layer drying method according to claim 2, is characterized in that, described refrigerating module is comprised of air intake blower fan, filter and exhaust fan.

7. a kind of drying equipment of enforcement thin layer drying method according to claim 2, is characterized in that, described rewinding module is comprised of scraper, siccative pulverizer and the temporary warehouse of product.