CN202648321U

CN202648321U - Compound heating vacuum drying oven

Info

Publication number: CN202648321U
Application number: CN201220246638XU
Authority: CN
Inventors: 文怀兴; 张秦权
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2012-05-29
Filing date: 2012-05-29
Publication date: 2013-01-02
Anticipated expiration: 2022-05-29

Abstract

Provided is a compound heating vacuum drying oven. Heating clapboards are arranged inside an oven body, material plates are arranged above each layer of the heating clapboard, and an infrared heating component is arranged above each layer of material plate. A steam connecting port, a steam exhausting valve and a connecting port for a vacuum pump are arranged on the oven body, oven doors is of a double-door structure, two connecting rod mechanisms are symmetrically arranged on two oven doors, two pneumatic cylinders are symmetrically arranged at two ends of the two connecting rod mechanisms, the two pneumatic cylinders are connected with each other through a first three-way tee and a second three-way tee, and a third nozzle of the first three-way tee and a third nozzle of the second three-way tee are arranged inside a three-position four-way directional control valve and correspond to an air compressor arranged in the three-position four-way directional control valve. Due to the fact that the compound heating vacuum drying oven adopts a heating way of combining radiation and conduction, the far infrared transferring heat to materials in radiation mode and the clapboards transferring heat to the materials in convection mode, therefore the non-uniformity of heating is avoided, the quality of the materials is guaranteed, and the drying time is saved. In addition, an automatic opening and closing door mechanism can save work relative to an oven door upturning mechanism and save labor relative to a horizontal motion mechanism.

Description

A kind of composite heating vacuum drying chamber

Technical field

The utility model relates to technical field of drying, relates in particular to a kind of composite heating vacuum drying chamber.

Background technology

There is following defective in existing vacuum drying chamber: for thermal decomposition, and the fruits and vegetables of easy oxidation, the nutrition storage rate of dry product is still not good; Dry required time is long, consumes energy larger the characteristics such as drying efficiency; In the vacuum process, to heat generally inhomogeneously, dried product distortion is larger.

Summary of the invention

The deficiency that exists in order to overcome above-mentioned prior art, the purpose of this utility model is to provide a kind of composite heating vacuum drying chamber, the critical pressure that reduces moisture vapor reaches the reduction drying process, has realized having shortened drying time, has improved the purpose of production efficiency and materials quality.

To achieve these goals, the technical solution adopted in the utility model is:

A kind of composite heating vacuum drying chamber, the heated barrier 2 that multiple-layer horizontal is arranged in casing 1, every layer of heated barrier 2 top arrange material disc 3, and every layer of material disc 3 top arrange infrared heating assembly 4, are provided with vapor interface 5, row's steam valve 6 on the casing 1 and vacuumize interface 7.

The chamber door 9 of described casing 1 is double door, be symmetrically arranged with two linkages 8 on two chamber doors 9, the end of two linkages 8 is symmetrically arranged with two pneumatic cylinders 10, two 10 of pneumatic cylinders are connected with the first threeway 11 and the second threeway 12, the 3rd mouth of the first threeway 11 and the 3rd mouth of the second threeway 12 place three position four-way directional control valve 13, also comprise air compressor 14, the outlet of air compressor 14 places three position four-way directional control valve 13.

Compared with prior art, the beneficial effects of the utility model are:

1. the utility model adopts the mode of heating of radiation and conduction combination, take far infrared to material radiant heat transfer and dividing plate to the material convection heat transfer' heat-transfer by convection, avoided the inhomogeneities of being heated, guaranteed materials quality, shortened drying time, below vacuum 133Pa, the mode of heating effect is better.

2. the utility model has designed a kind of new type auto gate operator structure simultaneously, economizes merit with respect to turning mechanism on the chamber door, and is laborsaving with respect to horicontal motion mechanism.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is individual layer heating arrangements schematic diagram of the present utility model.

Fig. 3 is door structure schematic diagram of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is carried out more detailed explanation.

As depicted in figs. 1 and 2, the utility model is a kind of composite heating vacuum drying chamber, the heated barrier 2 that multiple-layer horizontal is arranged in casing 1, every layer of heated barrier 2 top arrange material disc 3, every layer of material disc top arranges infrared heating assembly 4, be provided with vapor interface 5, row's steam valve 6 on the casing 1 and vacuumize interface 7, the distance in the infrared tube between the material is according to determining with the Fluent simulation.

As shown in Figure 3, the utility model is taked a kind of automatic door structure, the chamber door 9 of casing 1 is double door, be symmetrically arranged with two linkages 8 on two chamber doors 9, the end of two linkages 8 is symmetrically arranged with two pneumatic cylinders 10, two 10 of pneumatic cylinders are connected with the first threeway 11 and the second threeway 12, the 3rd mouth of the first threeway 11 and the 3rd mouth of the second threeway 12 place three position four-way directional control valve 13, also comprise air compressor 14, the outlet of air compressor 14 places three position four-way directional control valve 13, wherein, three position four-way directional control valve 13 is installed on the side of casing 1 by valve seat.

The utility model course of work is as follows:

Three position four-way directional control valve 13 is placed right position, pneumatic cylinder 10 carries out supercharging by the first threeway 11 at the e place, pneumatic cylinder 10 shrinks connecting rod 8, pin joint moves to the d place from c around o, chamber door 9 is opened, the material disc 3 that holds material is put into drying box, three position four-way directional control valve 13 places left position, air compressor 14 carries out supercharging by the second threeway 12 at the f place, pneumatic cylinder 10 outside drivening rods 8, pin joint moves to the c place from d around o, and chamber door 9 is closed, and closes rear three position four-way directional control valve 13 and places meta.

By heated barrier 2 and infrared heating assembly 4 composite heatings, after temperature has arrived setting value, drying box is vacuumized (want heat to material first in air, relatively shortened drying time); Set drying temperature curve (value of feedback of collecting temperature sensor, pressure sensor is regulated dry indoor temperature in real time) according to material properties; Infrared heating assembly 4 gives material radiant heat transfer and dividing plate to the material convection heat transfer' heat-transfer by convection; Whole process temperature control is with reference to drying temperature curve; Open (the same) after to be dried, take out dried product.

The utility model take far infrared to material radiant heat transfer and dividing plate to the material convection heat transfer' heat-transfer by convection, avoided the inhomogeneities of heating, improved the defective of prior art, simple to operate in the dry run, under the cryogenic vacuum condition, the color and luster that dried product can keep preferably, local flavor, institutional framework and nutritional labeling.

Claims

1. composite heating vacuum drying chamber, the heated barrier (2) that multiple-layer horizontal is arranged in casing (1), it is characterized in that, every layer of heated barrier (2) top arranges material disc (3), every layer of material disc (3) top arranges infrared heating assembly (4), is provided with vapor interface (5), row's steam valve (6) on the casing (1) and vacuumizes interface (7).

2. described composite heating vacuum drying chamber according to claim 1, it is characterized in that, the chamber door (9) of described casing (1) is double door, be symmetrically arranged with two linkages (8) on two chamber doors (9), the end of two linkages (8) is symmetrically arranged with two pneumatic cylinders (10), be connected with the first threeway (11) and the second threeway (12) between two pneumatic cylinders (10), the 3rd mouth of the first threeway (11) and the 3rd mouth of the second threeway (12) place three position four-way directional control valve (13), also comprise air compressor (14), the outlet of air compressor (14) places three position four-way directional control valve (13).