CN107490256B - Negative pressure type electric heating drier - Google Patents
Negative pressure type electric heating drier Download PDFInfo
- Publication number
- CN107490256B CN107490256B CN201710862672.7A CN201710862672A CN107490256B CN 107490256 B CN107490256 B CN 107490256B CN 201710862672 A CN201710862672 A CN 201710862672A CN 107490256 B CN107490256 B CN 107490256B
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- electric heating
- air
- chamber
- fan
- dispersing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
- F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a negative pressure type electric heating dryer, wherein a fan chamber and a fan are arranged at the center of the top of a drying chamber positioned in a box body, an electric heating chamber and an electric heating device are arranged at the upper part of the fan chamber, and a sandwich cavity is arranged between the drying chamber and the box body; the top of the box body is provided with a cold and hot air exchange device, an air inlet pipeline is communicated with an inlet of the electric heating chamber, an outlet of the electric heating chamber is communicated with the interlayer cavity, a series of air inlet holes are distributed between the drying chamber and the interlayer cavity, the top of the drying chamber is communicated with an inlet of a fan chamber, and an outlet of the fan chamber is communicated with the exhaust pipeline. The invention can comprehensively absorb and discharge moisture through a negative pressure mode and improve the drying efficiency. The preheating mode can shorten the heating time, and further provides high drying efficiency. The cold and hot air exchange device can realize energy recycling, save energy and reduce cost.
Description
Technical Field
The invention relates to the technical field of dryers, in particular to a negative-pressure type electric heating dryer.
Background
At present, the types of the drying machines are various, but the problems of serious energy loss, low heat utilization rate, uneven distribution of hot air in a drying box and the like still exist. In the drying equipment in the prior art, steam is supplied by a boiler, resistance heating, a quartz tube heat source, a heat pump or direct firewood and coal burning and other heat sources act on an object to be dried, heat energy reaches the inside of the object through heat transfer, and the moisture of the whole object is gradually evaporated outwards. There are two main problems: firstly, drying efficiency is low, can not discharge all moisture completely, and the moisture that still has not to give off exists in the drying chamber, and secondly, calorific loss is serious, and drying cost is high.
Disclosure of Invention
The invention provides a negative pressure type electric heating dryer aiming at the technical problems of the existing dryer.
The invention adopts the following technical scheme: a negative pressure type electric heating drier comprises an electric heating device, a fan, a box body and a drying chamber, wherein the center of the top of the drying chamber positioned in the box body is provided with the fan chamber and the fan, the upper part of the fan chamber is provided with an electric heating chamber and the electric heating device, and an interlayer cavity is arranged between the drying chamber and the box body; the top of the box body is provided with a cold and hot air exchange device, an air inlet pipeline and an air exhaust pipeline in the cold and hot air exchange device are distributed in parallel, the air inlet pipeline is communicated with an inlet of an electric heating chamber, an outlet of the electric heating chamber is communicated with an interlayer cavity, a series of air inlet holes are distributed between the drying chamber and the interlayer cavity, the top of the drying chamber is communicated with an inlet of a fan chamber, and an outlet of the fan chamber is communicated with the air exhaust pipeline.
The exhaust duct is located the inside of intake stack, can preheat, waste heat recovery, dehumidification, cold and hot gas exchange device places at stoving roof portion. The electric heating device is characterized in that a plurality of electric heating wires are arranged in the electric heating chamber, and the electric heating wires are fixed at the upper end of the inside of the oven and are separated from the drying chamber. The outer side of the box body is made of heat insulating materials. When the negative pressure fan works, the air pressure in the drying chamber is reduced, and the external air begins to slowly enter.
An inlet air-dispersing adjusting mechanism is arranged on the inner side of the electric heating chamber, a conical solid plate is arranged in the middle of the inlet air-dispersing adjusting mechanism, and inlet air-dispersing adjusting plates with uniformly distributed micropores are distributed on the periphery of the conical solid plate in an extending manner; meanwhile, a guide rod is arranged on the inner periphery of the electric heating chamber, a sliding sleeve is sleeved on the guide rod, a spring is arranged below the sliding sleeve, and the sliding sleeve is fixed with the edge of the inlet air-dispersing adjusting plate.
An outlet air-dispersing adjusting mechanism is arranged at the inner side of the interlayer cavity, a conical solid plate is arranged in the middle of the outlet air-dispersing adjusting mechanism, and outlet air-dispersing adjusting plates with uniformly distributed micropores are distributed in the periphery of the conical solid plate in an extending manner; meanwhile, a guide rod is arranged on the periphery of the interlayer cavity, a sliding sleeve is sleeved on the guide rod, a spring is arranged below the sliding sleeve, and the sliding sleeve is fixed with the edge of the outlet air-dispersing adjusting plate.
Has the beneficial effects that: the invention arranges the wet exhaust pipeline in the cold and hot air exchange device in the air inlet pipeline; the electric heating wire is arranged inside the electric heating wire; the high-temperature gas channel is arranged on the inner walls of two sides of the box body, and a plurality of rows of continuous small holes are adopted at the air outlet; the external air enters the electric heating chamber through the cold and hot air exchange device, the electric heating chamber is communicated with the drying chamber through the high-temperature gas channel, and the drying chamber is communicated with the moisture exhaust pipeline through the negative pressure fan. Preheating, waste heat recovery and dehumidification can be carried out in the air inlet pipeline, the air pressure in the drying chamber is reduced when the negative pressure fan works, and the external air starts to enter slowly. Moisture can be comprehensively absorbed and discharged through a negative pressure mode, and drying efficiency is improved. The preheating mode can shorten the heating time, and further provides high drying efficiency. The cold and hot air exchange device can realize energy recycling, save energy and reduce cost.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a front view of the internal structure of the present invention.
Fig. 3 is a side view of the internal structure of the present invention.
Fig. 4 isbase:Sub>A schematic view of the sectional structurebase:Sub>A-base:Sub>A of fig. 2.
Fig. 5 is a schematic view of a cross-sectional structure B-B of fig. 3.
Fig. 6 is an air intake and dispersing buffer device.
Fig. 7 is an air outlet dispersing buffer device.
Reference numbers in the figures: the air conditioner comprises a cold and hot air exchange device 1, an air inlet pipeline 2, an exhaust pipeline 3, an electric heating wire 4, a fan 5, fan blades 6, a sandwich cavity 7, a fan chamber 8, a reinforcing column 9, a reinforcing rod 10, an air inlet hole 11, hinges 12, a case 13, an electric heating chamber 14, a drying chamber 15, a heating air inlet 16, a guide plate 17, a heating air outlet 18, an inlet air-dispersing adjusting plate 19, a conical solid plate 20, a guide rod 21, a sliding sleeve 22, a spring 23, an outlet air-dispersing adjusting plate 24, a conical solid plate 25 and an air guide pipe 26.
Detailed Description
Example 1: the negative pressure type electric heating dryer shown in fig. 1-3 comprises an electric heating device, a fan 5, a box body, a drying chamber 15 and the like. The box side sets up the chamber door, and the top is installed and is provided with cold and hot air exchange device 1 at the box top, and intake stack 2 and exhaust duct 3 in the cold and hot air exchange device 1 distribute side by side, exhaust duct 3 is located intake stack 2's inside, can preheat, waste heat recovery, dehumidification, cold and hot gas exchange device places at stoving roof portion.
Specifically, referring to fig. 4 and 5, the lower most area inside the cabinet is a drying chamber 15, a fan chamber 8 is provided at the center of the top of the drying chamber 15 and the fan 5 is installed, and an electric heating chamber 14 is provided at the upper part of the fan chamber 8 and the electric heating device is installed. The electric heating device is provided with a plurality of electric heating wires 4 in an electric heating chamber 14, and the electric heating wires 4 are fixed at the inner upper end of the oven and are separated from a drying chamber 15. The outer side of the box body is made of heat insulating materials.
An interlayer cavity 7 or a drying pipeline is arranged between the drying chamber 15 and the box body, the air inlet pipeline 2 is communicated with an inlet of the electric heating chamber 14, an outlet of the electric heating chamber 14 is communicated with the interlayer cavity 7, a series of air inlet holes 11 are distributed between the drying chamber 15 and the interlayer cavity 7, the top of the drying chamber 15 is communicated with an inlet of the fan chamber 8, and an outlet of the fan chamber 8 is communicated with the exhaust pipeline 3. When the negative pressure fan works, the air pressure in the drying chamber 15 is reduced, and the external air starts to enter slowly. The dehumidification line in the cold-hot air exchange device 1 is inside the air intake line. Preheating, waste heat recovery and dehumidification can be carried out in the air inlet pipeline, the air pressure in the drying chamber 15 is reduced when the negative-pressure fan works, and external air begins to enter slowly. Moisture can be comprehensively absorbed and discharged through a negative pressure mode, and drying efficiency is improved. The preheating mode can shorten the heating time, and further provides high drying efficiency.
Example 2: on the basis of the embodiment 1, an inlet air-dispersing adjusting mechanism is installed on the inner side of the electric heating part 14, referring to fig. 6, a conical solid plate 20 is arranged in the middle of the inlet air-dispersing adjusting mechanism, and inlet air-dispersing adjusting plates 19 with uniformly distributed micropores are distributed on the periphery of the conical solid plate 20 in an extending manner; meanwhile, a guide rod 21 is arranged on the inner periphery of the electric heating chamber 14, a sliding sleeve 22 is sleeved on the guide rod 21, a spring 23 is arranged below the sliding sleeve 22, and the sliding sleeve 22 is fixed with the edge of the inlet air-dispersing adjusting plate 19.
Meanwhile, an outlet air-dispersing adjusting mechanism is installed inside the interlayer cavity 7, referring to fig. 7, the middle part of the outlet air-dispersing adjusting mechanism is a conical solid plate 25, and outlet air-dispersing adjusting plates 24 with uniformly distributed micro-holes are distributed around the conical solid plate 25 in an extending manner; meanwhile, a guide rod 21 is arranged on the inner periphery of the interlayer cavity 7, a sliding sleeve 22 is sleeved on the guide rod 21, a spring 23 is arranged below the sliding sleeve 22, and the sliding sleeve 22 is fixed with the edge of an outlet air-dispersing adjusting plate 24.
Claims (4)
1. The utility model provides a negative pressure formula electric heating desiccator, includes electric heater unit, fan, box and drying chamber, characterized by: a fan chamber is arranged at the center of the top of the drying chamber in the box body and is provided with a fan, an electric heating chamber is arranged at the upper part of the fan chamber and is provided with an electric heating device, and a sandwich cavity is arranged between the drying chamber and the box body; the top of the box body is provided with a cold and hot air exchange device, an air inlet pipeline and an air outlet pipeline in the cold and hot air exchange device are distributed in parallel, the air inlet pipeline is communicated with an inlet of an electric heating chamber, an outlet of the electric heating chamber is communicated with an interlayer cavity, a series of air inlet holes are distributed between the drying chamber and the interlayer cavity, the top of the drying chamber is communicated with an inlet of a fan chamber, an outlet of the fan chamber is communicated with the air outlet pipeline, when a pressure fan works, the air pressure in the drying chamber is reduced, external air starts to slowly enter, a moisture exhaust pipeline in the cold and hot air exchange device is arranged in an air inlet pipeline, and preheating, waste heat recovery and dehumidification can be carried out in the air inlet pipeline; an inlet air-dispersing adjusting mechanism is arranged on the inner side of the electric heating chamber, a conical solid plate is arranged in the middle of the inlet air-dispersing adjusting mechanism, and inlet air-dispersing adjusting plates with uniformly distributed micropores are distributed on the periphery of the conical solid plate in an extending manner; meanwhile, a guide rod is arranged on the inner periphery of the electric heating chamber, a sliding sleeve is sleeved on the guide rod, a spring is arranged below the sliding sleeve, and the sliding sleeve and the edge of the inlet air-dispersing adjusting plate are fixed together; or, an outlet air-dispersing adjusting mechanism is arranged at the inner side of the interlayer cavity, the middle part of the outlet air-dispersing adjusting mechanism is a conical solid plate, and outlet air-dispersing adjusting plates with uniformly distributed micropores are distributed in an extending manner on the periphery of the conical solid plate; meanwhile, a guide rod is arranged on the periphery of the interlayer cavity, a sliding sleeve is sleeved on the guide rod, a spring is arranged below the sliding sleeve, and the sliding sleeve is fixed with the edge of the outlet air-dispersing adjusting plate.
2. The negative pressure type electric heating dryer as claimed in claim 1, wherein: the exhaust duct is located inside the air inlet duct.
3. The negative pressure type electric heating dryer as claimed in claim 1, wherein: the electric heating device is characterized in that a plurality of electric heating wires are arranged in the electric heating chamber, and the electric heating wires are fixed at the upper end of the inside of the oven and are separated from the drying chamber.
4. The negative pressure type electric heating dryer as claimed in claim 1, wherein: the outer side of the box body is made of heat insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710862672.7A CN107490256B (en) | 2017-09-22 | 2017-09-22 | Negative pressure type electric heating drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710862672.7A CN107490256B (en) | 2017-09-22 | 2017-09-22 | Negative pressure type electric heating drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107490256A CN107490256A (en) | 2017-12-19 |
| CN107490256B true CN107490256B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710862672.7A Active CN107490256B (en) | 2017-09-22 | 2017-09-22 | Negative pressure type electric heating drier |
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| Country | Link |
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| CN (1) | CN107490256B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341229A (en) * | 2018-11-19 | 2019-02-15 | 郑州容大科技股份有限公司 | A kind of suction type carbon fibre far infrared electric heating plate drying machine |
| CN111664658A (en) * | 2020-05-26 | 2020-09-15 | 冯丹丹 | Circumference multistage distributing type herbal pieces-stoving dehydrating unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609320Y (en) * | 2003-03-13 | 2004-03-31 | 张明德 | Hot air roaster for printed circuit board |
| CN101307982A (en) * | 2008-07-03 | 2008-11-19 | 南阳防爆集团有限公司 | Energy-saving explosion-proof drying furnace and its drying monitoring system |
| CN206291434U (en) * | 2016-11-01 | 2017-06-30 | 广东绿康空气净化工程有限公司 | Central air-conditioning ionizing particle diffusing device |
| CN206440074U (en) * | 2017-01-13 | 2017-08-25 | 华北电力大学（保定） | A kind of electric heating drier with heat reclamation device |
| CN207831808U (en) * | 2017-09-22 | 2018-09-07 | 河南农业大学 | Suction type electric heating drier |
-
2017
- 2017-09-22 CN CN201710862672.7A patent/CN107490256B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609320Y (en) * | 2003-03-13 | 2004-03-31 | 张明德 | Hot air roaster for printed circuit board |
| CN101307982A (en) * | 2008-07-03 | 2008-11-19 | 南阳防爆集团有限公司 | Energy-saving explosion-proof drying furnace and its drying monitoring system |
| CN206291434U (en) * | 2016-11-01 | 2017-06-30 | 广东绿康空气净化工程有限公司 | Central air-conditioning ionizing particle diffusing device |
| CN206440074U (en) * | 2017-01-13 | 2017-08-25 | 华北电力大学（保定） | A kind of electric heating drier with heat reclamation device |
| CN207831808U (en) * | 2017-09-22 | 2018-09-07 | 河南农业大学 | Suction type electric heating drier |
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| Publication number | Publication date |
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| CN107490256A (en) | 2017-12-19 |
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