CN110671900A

CN110671900A - High-voltage electric field and hot air combined drying experimental device

Info

Publication number: CN110671900A
Application number: CN201911091196.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: Northwest A&F University
Current assignee: Northwest A&F University
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-01-10

Abstract

The invention discloses a high-voltage electric field and hot air combined drying experimental device which comprises a rack, a high-voltage generator, a hot air blower, a drying box and the like. The frame is used for settling spare parts such as high voltage generator, high-voltage electrode, telluric electricity field, linear guide and air heater, linear guide and the equal fixed mounting of telluric electricity field are in the frame, and high-voltage electrode installs on linear guide's slip table, adjust the electrode spacing through the horizontal migration slip table, the objective table has been placed between high-voltage electrode and the telluric electricity field, and the objective table hangs and fastens on weighing sensor and with the bolt, weighing sensor installs in the frame, the electrode plate all can be dismantled with the objective table and change, the drying cabinet is formed by the organic glass material preparation, provides approximate heat retaining drying environment, and convenient the observation. This drying device compact structure, key spare part can be dismantled and change, and adjustable a plurality of technical parameter are in order to satisfy multiple experiment requirement, utilize high-voltage electric field can improve the dry quality of material, and the air heater can accelerate the air current in the drying cabinet and move and make drying efficiency higher.

Description

High-voltage electric field and hot air combined drying experimental device

Technical Field

The invention belongs to the technical field of drying devices, and particularly relates to a high-voltage electric field and hot air combined drying experimental device.

Background

Drying is one of the oldest food processing methods, and natural airing, hot air drying and vacuum freeze drying are common drying methods in production and life. However, natural drying is seriously affected by weather conditions, and the drying speed is slow; the heat-sensitive substances and the physiological active substances of the materials can be damaged by hot air drying, and the drying cost is high; although the vacuum freeze-drying method can ensure the quality of the materials to the maximum extent, the equipment cost is high. The high-voltage electric field drying technology is a novel drying technology, has the advantages of no temperature rise in the drying process, low manufacturing cost of equipment, energy conservation, environmental protection and the like, and has good keeping effect on nutrient components, appearance and the like of materials.

The high-voltage electric field drying technology has many advantages, but the research experiment of the high-voltage electric field drying technology is mostly completed by using a simple experimental device with single function, the operability of the device is poor, and the applicability is not wide. The drying device that this patent relates to can adjust a plurality of technical parameter such as hot-blast temperature, wind speed, electrode spacing and voltage, can detect data such as material weight, leakage current, and key parts on the device can change different types. The device has compact structure, can create various experimental conditions and is convenient for experimental research.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides a high-voltage electric field and hot air combined drying experimental device which is wide in applicability and convenient to operate.

In order to achieve the purpose, the invention adopts the following technical scheme: a high-voltage electric field and hot air combined drying experimental device comprises a rack, a high-voltage generator, a hot air blower, a drying box and the like. The frame is used for settling spare parts such as linear guide, high voltage electrode, telluric electricity field, high voltage generator and air heater, high voltage electrode installs in the frame on linear guide's the slip table, and telluric electricity field fixed mounting comes the regulation electrode interval in the frame through removing the slip table.

Furthermore, the frame mainly adopts aluminium alloy and steel equipment to form, and the frame below is equipped with universal castor.

Furthermore, the high-voltage generator and the hot air blower are fixedly arranged on the frame.

Furthermore, the linear guide rail adopts a screw pair of a stepping motor, the screw pair is fixedly installed on the frame, and the high-voltage electrode is installed on a sliding table of the screw pair.

Furthermore, an object stage is placed between the high-voltage electrode and the grounding electrode, the object stage is suspended on a weight sensor through a connecting piece, and the weight sensor is installed on the rack.

Further, the drying cabinet is made by organic glass material, conveniently observes to have chamber door and air intake and air outlet.

The invention has the beneficial effects that: the high-voltage electric field and hot air combined drying experimental device can adjust a plurality of technical parameters to create different experimental conditions, such as electrode spacing, output voltage, hot air temperature and speed and the like; compact structure, key spare part can be dismantled and change, is convenient for explore the experiment. The drying quality of the materials can be improved by utilizing the high-voltage electric field, and the air heater can accelerate the air flow in the drying box to ensure that the drying efficiency is higher.

Drawings

FIG. 1 is a schematic structural view of a high-voltage electric field and hot air combined drying experimental device according to the present invention;

FIG. 2 is a schematic view of the connection of the high voltage electrode, the insulating plate and the sliding table;

FIG. 3 is a schematic structural view of a high voltage electrode;

FIG. 4 is a schematic view of the connection of the stage to the weight sensor;

FIG. 5 is a schematic view of the structure of the drying chamber;

reference numerals: 1, aluminum profile square tubes; 2, a drying chamber; 3, a screw pair of a stepping motor; 4 a high voltage generator; 5, a ground foot connecting piece; 6 universal caster wheels; 7, angle steel; 8, a hot air blower; 9 high voltage (needle) electrode; 10 a grounded [ plate ] electrode; 11 an object stage; 12 high voltage electrode pads; 13 an object stage connection member; 14 weight sensors; 15 aluminum corner connectors; 16 right-angle corner connectors; 17 drying oven door; 18 hinge; 19 high voltage electrode pad connector.

Detailed Description

The technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that these descriptions are exemplary and are not intended to limit the scope of the present invention.

As shown in fig. 1, the experimental apparatus for drying by combining a high voltage electric field and hot air of this embodiment includes a frame, a high voltage generator [4], a hot air blower [8], a drying box [2], and the like. The frame consists of a chassis welded by steel and an aluminum square tube bracket and is used for arranging parts such as a linear guide rail, a high-voltage electrode, a grounding electrode, a high-voltage generator [4] and a hot air blower; the air heater [8] is used for providing circulating hot air required by drying, and can regulate and control the output air speed and temperature.

As shown in figure 1, the high-voltage electrode is arranged on a movable sliding table of the linear guide rail, the linear guide rail adopts a screw pair of a stepping motor, the grounding electrode is fixedly arranged on a rack, and the distance between the electrodes can be adjusted through the movable sliding table. The ground electrode shown in fig. 1 has a plate-like structure, and the high-voltage electrode has a needle-like structure.

An object stage for containing a sample to be processed is arranged between the high-voltage electrode and the grounding electrode, the object stage is hung on a weight sensor through a connecting piece, the weight of the sample can be collected, and the weight sensor is arranged on the rack in a hanging mode, as shown in figure 1. The stage and the weight sensor are connected together by a connecting member, as shown in fig. 4, the stage is caught by a protrusion at the lower end of the connecting member, and the upper end of the connecting member is hung on a hook of the weight sensor by a bolt.

The high-voltage electrode, the grounding electrode and the objective table are all arranged in a drying chamber, the drying chamber is made of colorless transparent organic glass materials and is mainly used for forming an approximately sealed drying environment, and the drying chamber is provided with a chamber door, an air inlet, an air outlet and other structures, as shown in fig. 5. The drying chamber is directly placed on the rack, the placing position of the drying chamber can be properly adjusted according to the horizontal position of the material, the air inlet is ensured to face the sample to be processed, hot air output by the hot air blower is conveyed to the air inlet of the drying box through the corrugated pipe, air circulation can be accelerated, and the working speed is higher.

The high-voltage electrode shown in fig. 1 is a needle electrode, the needle electrode is structurally shown in fig. 3, the step surface in the middle of the electrode plays a role in positioning, the needle electrode is installed on an insulating pole plate, the pole plate is also made of organic glass material, and the pole plate is connected with a sliding table of a lead screw pair of a stepping motor through a T-shaped connecting piece, as shown in fig. 2. When a plurality of needle electrodes are used as high-voltage electrodes, the tail ends of the needle electrodes can be connected in series in sequence by iron wires.

Universal casters are arranged below the rack, so that the device is convenient to move; the key parts can be detached, such as a high-voltage electrode, a grounding electrode, an object stage and the like, and different types can be replaced according to requirements.

The described embodiments of the present invention are intended to be illustrative only and not limiting. Therefore, all modifications and substitutions should be considered as falling within the scope of the present invention without departing from the scope of the present invention.

Claims

1. A high-voltage electric field and hot air combined drying experimental device is characterized by comprising a rack, a high-voltage generator [4], a hot air blower [8], a drying box [2] and the like.

2. The frame is used for settling spare parts such as linear guide [3], high voltage generator [4], high voltage electrode [9], grounding electrode [10] and air heater [8], high voltage electrode [9] is installed on the sliding table of linear guide [3], grounding electrode [10] is fixedly installed on the frame, and the electrode spacing is adjusted by moving the sliding table.

3. The high-voltage electric field and hot air combined drying experimental device as claimed in claim 1, wherein the rack is mainly assembled by aluminum profiles [1], steel materials [7] and corner connectors, and universal casters [6] are installed below the rack.

4. The experimental device for the combination of high-voltage electric field and hot air drying as claimed in claim 1, wherein the high-voltage generator [4] and the hot air blower [8] are fixedly arranged on the frame.

5. The high-voltage electric field and hot air combined drying experimental device as claimed in claim 1, wherein a stepping motor screw pair is adopted by the linear guide rail [3], the screw pair is fixedly mounted on a rack, and the high-voltage electrode [9] is mounted on a sliding table of the screw pair.

6. The high-voltage electric field and hot air combined drying experimental device as claimed in claim 1, wherein a stage [11] is placed between the high-voltage electrode [9] and the grounding electrode [10], the stage [11] is suspended on a weight sensor [14] through a connecting piece [13], and the weight sensor [14] is mounted on a frame.

7. The experimental device for the combination drying of the high-voltage electric field and the hot air according to claim 1, characterized in that the drying box (2) is made of transparent organic glass material, is convenient for observation, and is provided with a box door, an air inlet and an air outlet.