CN106979667A - Modified form directly-heated type vacuum drier - Google Patents
Modified form directly-heated type vacuum drier Download PDFInfo
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- CN106979667A CN106979667A CN201710361345.3A CN201710361345A CN106979667A CN 106979667 A CN106979667 A CN 106979667A CN 201710361345 A CN201710361345 A CN 201710361345A CN 106979667 A CN106979667 A CN 106979667A
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- Prior art keywords
- pipe
- screw thread
- oil gas
- gas collection
- modified form
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/041—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying flowable materials, e.g. suspensions, bulk goods, in a continuous operation, e.g. with locks or other air tight arrangements for charging/discharging
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses modified form directly-heated type vacuum drier, including casing, baking oven tube sheet, aluminium powder disk, heat conducting pipe, electric heating tube, air cooling pipe, oil gas collection pipe, vavuum pump, electronic vacuum-pressure table, condenser, circulate cavity, cool down exhaust column, magnetic valve, blower fan, the modified form directly-heated type vacuum drier, clever structure, it is powerful, by using the device, it can not only reach that the heat radiation to dried object is dried by straight pipe type electrical heating under vacuum conditions, solve traditional heating mode increase power consumption, effect is reduced, and danger coefficient it is high the problem of, additionally can be as needed, the dried object natural airflow formula cooling after heating is realized by shirtsleeve operation, eventually through above-mentioned, so as to while realizing to the material highly effective and safe drying process such as aluminium powder, also tradition is effectively avoided to cause the situation of air pollution and discharge waste residue using boiler, reach the protection to environment, meet national environmental protection policy.
Description
Technical field
The present invention relates to drying machine, more particularly to modified form directly-heated type vacuum drier.
Background technology
Traditional aluminium silver powder drying, in order to not occur accident, is that the aluminium powder after press filtration is put into a closed container to be placed in
Dried under vacuum state, drying source is that boiler heats conduction oil, is sent into through pipeline in container in the evaporator that pipeline is constituted
Heat exchange is carried out with aluminium powder to be dried, thus reaches drying purpose.Conduction oil starts the coking that is carbonized in celsius 250-300 degree,
Reduce pipe section, on-way resistance increases and increases power consumption, effect reduction.Pressure increase simultaneously, causes the leakage of pipeline dirty
Contaminate environment and the smelt person of hurting sb.'s feelings.In addition, because aluminium powder belongs to secondary threat article, drying process is the process of a quite dangerous, slightly
Fire incident will occur for careless manipulation, cause heavy losses.In addition, traditional approach is not only to air pollution, in addition it is also necessary to which discharge is useless
Slag, so as to cause to have a strong impact on to environment, is unfavorable for current environmental protection concept, does not also meet national environmental protection policy, in view of more than
Defect, is necessary to design modified form directly-heated type vacuum drier in fact.
The content of the invention
The technical problems to be solved by the invention are：Modified form directly-heated type vacuum drier is provided, to solve to adopt at present
Processing is dried to aluminium powder with traditional approach, there are shortcomings, the problem of being unfavorable for promoting the use of.
In order to solve the above technical problems, the technical scheme is that：Modified form directly-heated type vacuum drier, including case
It is body, baking oven tube sheet, aluminium powder disk, heat conducting pipe, electric heating tube, air cooling pipe, oil gas collection pipe, vavuum pump, electronic vacuum-pressure table, cold
Condenser, circulation cavity, cooling exhaust column, magnetic valve, blower fan, described baking oven tube sheet are located at box house, described baking oven pipe
Plate is connected with welding box body, and described aluminium powder disk quantity is some, and described aluminium powder disk is sequentially distributed in baking oven from top to bottom
Inside tube sheet, described aluminium powder disk is movably connected with baking oven tube sheet, and described heat conducting pipe quantity is some, described heat conducting pipe
Positioned at aluminium powder disk between any two, described heat conducting pipe is connected with baking oven Tube-sheet Welding, and described electric heating tube is located in heat conducting pipe
Portion, described electric heating tube is connected with heat conduction pipe screw thread, and described air cooling pipe quantity is some, and described air cooling pipe, which is located at, leads
Between any two, described air cooling pipe is connected heat pipe with baking oven Tube-sheet Welding, and described oil gas collection pipe is located at casing top middle-end,
Described oil gas collection pipe is connected with welding box body, and described vavuum pump is located at oil gas collection pipe top rear, described vacuum
Pump is connected with oil gas collection pipe screw thread, and described electronic vacuum-pressure epitope is in oil gas collection pipe top nose, described electronics
Pressure vacuum gauge is connected with oil gas collection pipe screw thread, and described electronic vacuum-pressure table is connected with vavuum pump wire, described
Condenser is located at oil gas collection pipe rear end, and described condenser is connected with oil gas collection pipe screw thread, and described flowing lumen body is located at
Between casing and baking oven tube sheet, described circulation cavity is hollow cavity, and described cooling exhaust column is located at box back, described
Cooling exhaust column be connected with welding box body, described magnetic valve is located at cooling exhaust column rear end, described magnetic valve and cooling
Exhausting pipe screw thread is connected, and described blower fan is located at cooling exhaust column rear end, and described blower fan is connected with cooling exhausting pipe screw thread.
Further, described casing front end is additionally provided with chamber door, and described chamber door one end is connected with body pivot, and described
The chamber door other end is connected with casing using lockset.
Further, thermal insulation board is additionally provided with the upside of described chamber door front end, described thermal insulation board is connected with chamber door screw thread.
Further, temperature controller is additionally provided with the upside of described heat-insulated front edge of board, described temperature controller is connected with thermal insulation board screw thread,
And described temperature controller is connected with electric heating tube wire.
Further, first switch, described first switch and thermal insulation board screw thread are additionally provided with the downside of described heat-insulated front edge of board
It is connected, and described first switch is connected with vavuum pump and electronic vacuum-pressure table wire.
Further, second switch, described second switch and thermal insulation board screw thread are additionally provided with the downside of described heat-insulated front edge of board
It is connected, and described second switch is connected with magnetic valve and blower fan wire.
Further, described cooling exhaust column rear upper side is additionally provided with blast pipe, described blast pipe and cold air exhaust column
Screw thread is connected.
Compared with prior art, modified form directly-heated type vacuum drier, before use, staff is first by electrical heating
Pipe, vavuum pump, electronic vacuum-pressure table, magnetic valve, blower fan and temperature controller are connected with extraneous power lead, in use, work
Personnel are first turned on chamber door, then aluminium powder disk is extracted out out of baking oven tube sheet, aluminium powder to be dried then are put into aluminium powder disk, then
Aluminium powder disk is reinserted into baking oven tube sheet, now by aforesaid operations, so as to realize the loading of aluminium powder, then closed chamber door
Lock is closed, first switch is then opened, vavuum pump and electronic vacuum-pressure table is opened simultaneously, i.e., vavuum pump is to box house
Vacuumize process is carried out, when the negative pressure of box house reaches the original set value of electronic vacuum-pressure table, passes through electronic vacuum
Manometric effect, makes vavuum pump be stopped, and the personnel that proceed with one's work open temperature controller, then operate temperature controller, make electric heating tube
Heating is started to warm up, aluminium powder to be dried is filled because electric heating tube and heat conducting pipe uniformly constitute to be put into matrix, and matrix interval
Disk, i.e., the effect transmitted by heat conducting pipe makes the electric heating tube even heat that distributes of heating and rapid by heat conducting pipe radiant heat
Amount reaches the drying to aluminium powder into aluminium powder, now by above-mentioned, makes to gradually become after the oil molecule in oil-containing aluminium powder is heated
Oil vapour, i.e. density, which diminish, rises to the top of casing, then condenser is entered by oil gas collection pipe, now by upper
State, so as to realize the collection to oil vapour, dry and finished, it is necessary to which when being cooled down, staff operates temperature control first when aluminium powder
Device, closes electric heating tube, then opens second switch, magnetic valve and blower fan is opened simultaneously, i.e., magnetic valve is opened, and is made cold
But exhaust column is in unimpeded state, then in the presence of blower fan, causes air flow through cooling exhaust column, circulation cavity and air cooling
Pipe carries out natural air cooled cooling to baking oven tubesheet region, and then heat is outwardly discharged by blast pipe, eventually through above-mentioned, from
And the cooling down effect to aluminium powder is reached, the modified form directly-heated type vacuum drier, clever structure is powerful, by making
The device is used, can not only reach that the heat radiation to dried object is dried by straight pipe type electrical heating under vacuum conditions, solve
The problem of traditional heating mode increase power consumption, effect reduction, and danger coefficient are high, additionally can be as needed, passes through letter
Single operates to realize the dried object natural airflow formula cooling after heating, eventually through above-mentioned, so as to realize to materials such as aluminium powders
While expecting highly effective and safe drying process, tradition is also effectively avoided to cause the feelings of air pollution and discharge waste residue using boiler
Condition, that is, reach the protection to environment, meets national environmental protection policy.Meanwhile, thermal insulation board be in order to temperature controller, first switch and
Second switch is thermally shielded protection.
Brief description of the drawings
Fig. 1 is the front view of modified form directly-heated type vacuum drier；
Fig. 2 is the side view of modified form directly-heated type vacuum drier；
Fig. 3 is the A of modified form directly-heated type vacuum drier to sectional view；
Fig. 4 is cooling exhaust column section view state diagram；
Fig. 5 is baking oven tube sheet side view；
Fig. 6 is baking oven tube sheet front view；
Fig. 7 is heat conducting pipe position enlarged drawing.
Casing 1, baking oven tube sheet 2, aluminium powder disk 3, heat conducting pipe 4, electric heating tube 5, air cooling pipe 6, oil gas collection pipe 7, vavuum pump
8th, electronic vacuum-pressure table 9, condenser 10, circulation cavity 11, cooling exhaust column 12, magnetic valve 13, blower fan 14, chamber door 101, every
Hot plate 102, temperature controller 103, first switch 104, second switch 105, blast pipe 1201.
Following embodiment will be further illustrated with reference to above-mentioned accompanying drawing.
Embodiment
Hereinafter, a variety of specific details are elaborated, to provide the saturating of the concept to constituting described embodiment basis
It is thorough to understand, however, it will be apparent to those skilled in the art that described embodiment can be in these no specific details
In it is some or all in the case of put into practice, in other cases, do not specifically describe well-known process step.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, modified form directly-heated type vacuum drier, including casing 1, baking
Case tube sheet 2, aluminium powder disk 3, heat conducting pipe 4, electric heating tube 5, air cooling pipe 6, oil gas collection pipe 7, vavuum pump 8, electronic vacuum-pressure table
9th, condenser 10, circulation cavity 11, cooling exhaust column 12, magnetic valve 13, blower fan 14, described baking oven tube sheet 2 are located in casing 1
Portion, described baking oven tube sheet 2 is weldingly connected with casing 1, and the described quantity of aluminium powder disk 3 is some, and described aluminium powder disk 3 is from upper
It is sequentially distributed under inside baking oven tube sheet 2, described aluminium powder disk 3 is movably connected with baking oven tube sheet 2, and described heat conducting pipe 4 is counted
Measure as some, described heat conducting pipe 4 is located at aluminium powder disk 3 between any two, and described heat conducting pipe 4 is weldingly connected with baking oven tube sheet 2,
The described pipe of electrical heating 5 is located inside heat conducting pipe 4, and described electric heating tube 5 is connected with the screw thread of heat conducting pipe 4, described air cooling pipe 6
Quantity is some, and described air cooling pipe 6 is located at heat conducting pipe 4 between any two, and described air cooling pipe 6 welds phase with baking oven tube sheet 2
Even, described oil gas collection pipe 7 is located at the top middle-end of casing 1, and described oil gas collection pipe 7 is weldingly connected with casing 1, described
Vavuum pump 8 is located at the top rear of oil gas collection pipe 7, and described vavuum pump 8 is connected with the screw thread of oil gas collection pipe 7, described electronics
Pressure vacuum gauge 9 is located at the top nose of oil gas collection pipe 7, described electronic vacuum-pressure table 9 and the screw thread phase of oil gas collection pipe 7
Connect, and described electronic vacuum-pressure table 9 is connected with the wire of vavuum pump 8, described condenser 10 is located at after oil gas collection pipe 7
End, described condenser 10 is connected with the screw thread of oil gas collection pipe 7, described circulation cavity 11 positioned at casing 1 and baking oven tube sheet 2 it
Between, described circulation cavity 11 is hollow cavity, and described cooling exhaust column 12 is located at the rear end of casing 1, described cooling exhausting
Pipe 12 is weldingly connected with casing 1, and described magnetic valve 13 is located at cooling exhaust column 12 rear end, and described magnetic valve 13 is taken out with cooling
The screw thread of airduct 12 is connected, and described blower fan 14 is located at cooling exhaust column 12 rear end, described blower fan 14 and the cooling spiral shell of exhaust column 12
Line is connected, and the described front end of casing 1 is additionally provided with chamber door 101, and described one end of chamber door 101 is rotatedly connected with casing 1, and described
The other end of chamber door 101 is connected with casing 1 using lockset, and thermal insulation board 102 is additionally provided with the upside of the described front end of chamber door 101, described
Thermal insulation board 102 is connected with the screw thread of chamber door 101, and temperature controller 103, described temperature control are additionally provided with the upside of the described front end of thermal insulation board 102
Device 103 is connected with the screw thread of thermal insulation board 102, and described temperature controller 103 is connected with the wire of electric heating tube 5, described thermal insulation board 102
First switch 104 is additionally provided with the downside of front end, described first switch 104 is connected with the screw thread of thermal insulation board 102, and described first opens
Close 104 with vavuum pump 8 and the wire of electronic vacuum-pressure table 9 to be connected, second switch is additionally provided with the downside of the described front end of thermal insulation board 102
105, described second switch 105 is connected with the screw thread of thermal insulation board 102, and described second switch 105 and magnetic valve 13 and blower fan
14 wires are connected, and the described rear upper side of cooling exhaust column 12 is additionally provided with blast pipe 1201, described blast pipe 1201 and cold air
The screw thread of exhaust column 12 is connected.
The modified form directly-heated type vacuum drier, before use, staff is first by electric heating tube 5, vavuum pump 8, electronics
Pressure vacuum gauge 9, magnetic valve 13, blower fan 14 and temperature controller 103 are connected with extraneous power lead, in use, staff is first
Chamber door 101 is first opened, then aluminium powder disk 3 is extracted out out of baking oven tube sheet 2, aluminium powder to be dried is then put into aluminium powder disk 3, then
Aluminium powder disk 3 is reinserted into baking oven tube sheet 2, now by aforesaid operations, so that the loading of aluminium powder is realized, then by chamber door
101 closings are locked, and are then opened first switch 104, vavuum pump 8 and electronic vacuum-pressure table 9 is opened simultaneously, i.e. vavuum pump
8 pairs of inside of casing 1 carry out vacuumize process, and the negative pressure inside casing 1 reaches the original set value of electronic vacuum-pressure table 9
When, by the effect of electronic vacuum-pressure table 9, vavuum pump 8 is stopped, the personnel that proceed with one's work open temperature controller 103, then grasp
Make temperature controller 103, electric heating tube 2 is started to warm up heating, because between electric heating tube 5 and the uniform composition matrix, and matrix of heat conducting pipe 4
Be put into and fill aluminium powder disk 3 to be dried, i.e., the effect transmitted by heat conducting pipe 4, the heat for distributing the heating of electric heating tube 5
The uniform and rapid drying reached by the radiations heat energy of heat conducting pipe 4 into aluminium powder, that is, to aluminium powder, now by above-mentioned, makes oil-containing
Oil vapour, i.e. density are gradually become after oil molecule in aluminium powder is heated diminish and rise to the top of casing 1, then received by oil gas
Collector 7 enters condenser 10, now by above-mentioned, so as to realize the collection to oil vapour, dries and is finished, it is necessary to enter when aluminium powder
During row cooling, staff operates temperature controller 103 first, closes electric heating tube 5, then opens second switch 105, makes electromagnetism
Valve 13 and blower fan 14 are opened simultaneously, i.e., magnetic valve 13 is opened, and cooling exhaust column 12 is in unimpeded state, then in blower fan 14
In the presence of, cause air flow through cooling exhaust column 12, circulation cavity 11 and air cooling pipe 6 and nature is carried out to the region of baking oven tube sheet 2
Wind cooling temperature lowering, then heat outwardly discharged by blast pipe 1201, eventually through above-mentioned, so as to reach that the cooling to aluminium powder is cold
But act on.Meanwhile, thermal insulation board 102 is to be thermally shielded guarantor to temperature controller 103, first switch 104 and second switch 105
Shield.
The present invention is not limited to above-mentioned specific embodiment, one of ordinary skill in the art from above-mentioned design,
Without performing creative labour, a variety of conversion made are within the scope of the present invention.
Claims (7)
1. modified form directly-heated type vacuum drier, it is characterised in that including casing, baking oven tube sheet, aluminium powder disk, heat conducting pipe, electrical heating
Pipe, air cooling pipe, oil gas collection pipe, vavuum pump, electronic vacuum-pressure table, condenser, circulation cavity, cooling exhaust column, magnetic valve,
Blower fan, described baking oven tube sheet is located at box house, and described baking oven tube sheet is connected with welding box body, described aluminium powder disk quantity
For some, described aluminium powder disk is sequentially distributed inside baking oven tube sheet from top to bottom, and described aluminium powder disk is lived with baking oven tube sheet
Dynamic to be connected, described heat conducting pipe quantity is some, and described heat conducting pipe is located at aluminium powder disk between any two, described heat conducting pipe with
Baking oven Tube-sheet Welding is connected, and described electric heating tube is located inside heat conducting pipe, and described electric heating tube is connected with heat conduction pipe screw thread,
Described air cooling pipe quantity is some, and described air cooling pipe is located at heat conducting pipe between any two, described air cooling pipe and baking oven pipe
Plate weld is connected, and described oil gas collection pipe is located at casing top middle-end, and described oil gas collection pipe is connected with welding box body, institute
The vavuum pump stated is located at oil gas collection pipe top rear, and described vavuum pump is connected with oil gas collection pipe screw thread, described electronics
Pressure vacuum gauge is located at oil gas collection pipe top nose, and described electronic vacuum-pressure table is connected with oil gas collection pipe screw thread, and
Described electronic vacuum-pressure table is connected with vavuum pump wire, and described condenser is located at oil gas collection pipe rear end, and described is cold
Condenser is connected with oil gas collection pipe screw thread, and described flowing lumen body is located between casing and baking oven tube sheet, described circulation cavity
For hollow cavity, described cooling exhaust column is located at box back, and described cooling exhaust column is connected with welding box body, described
Magnetic valve is located at cooling exhaust column rear end, and described magnetic valve is connected with cooling exhausting pipe screw thread, and described blower fan is located at cooling
Exhaust column rear end, described blower fan is connected with cooling exhausting pipe screw thread.
2. modified form directly-heated type vacuum drier as claimed in claim 1, it is characterised in that described casing front end is additionally provided with
Chamber door, described chamber door one end is connected with body pivot, and the described chamber door other end is connected with casing using lockset.
3. modified form directly-heated type vacuum drier as claimed in claim 2, it is characterised in that on the upside of described chamber door front end also
Provided with thermal insulation board, described thermal insulation board is connected with chamber door screw thread.
4. modified form directly-heated type vacuum drier as claimed in claim 3, it is characterised in that on the upside of described heat-insulated front edge of board
Temperature controller is additionally provided with, described temperature controller is connected with thermal insulation board screw thread, and described temperature controller is connected with electric heating tube wire.
5. modified form directly-heated type vacuum drier as claimed in claim 4, it is characterised in that on the downside of described heat-insulated front edge of board
First switch is additionally provided with, described first switch is connected with thermal insulation board screw thread, and described first switch and vavuum pump and electronics
Pressure vacuum gauge wire is connected.
6. modified form directly-heated type vacuum drier as claimed in claim 5, it is characterised in that on the downside of described heat-insulated front edge of board
Second switch is additionally provided with, described second switch is connected with thermal insulation board screw thread, and described second switch and magnetic valve and blower fan
Wire is connected.
7. modified form directly-heated type vacuum drier as claimed in claim 6, it is characterised in that described cooling exhaust column rear end
Upside is additionally provided with blast pipe, and described blast pipe is connected with cold air exhausting pipe screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361345.3A CN106979667A (en) | 2017-05-22 | 2017-05-22 | Modified form directly-heated type vacuum drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361345.3A CN106979667A (en) | 2017-05-22 | 2017-05-22 | Modified form directly-heated type vacuum drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106979667A true CN106979667A (en) | 2017-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710361345.3A Pending CN106979667A (en) | 2017-05-22 | 2017-05-22 | Modified form directly-heated type vacuum drier |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1008814A (en) * | 1962-02-27 | 1965-11-03 | Leybold Hochvakuum Anlagen Gmb | Improvements relating to freeze drying |
| CN201355180Y (en) * | 2008-09-05 | 2009-12-02 | 查晓峰 | A hot plate drying bed continuous vacuum drying unit |
| CN102865722A (en) * | 2012-10-16 | 2013-01-09 | 立德泰勀(上海)科学仪器有限公司 | Internal heating type vacuum drying oven |
| CN205337477U (en) * | 2015-12-09 | 2016-06-29 | 北京汇华东泽生物有限公司 | Vacuum drying oven |
| CN205536920U (en) * | 2016-02-20 | 2016-08-31 | 宁波大学 | Electrical heating type vacuum drying oven |
| CN206755748U (en) * | 2017-05-22 | 2017-12-15 | 浏阳市银丰机械制造有限公司 | Modified form directly-heated type vacuum drier |
-
2017
- 2017-05-22 CN CN201710361345.3A patent/CN106979667A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1008814A (en) * | 1962-02-27 | 1965-11-03 | Leybold Hochvakuum Anlagen Gmb | Improvements relating to freeze drying |
| CN201355180Y (en) * | 2008-09-05 | 2009-12-02 | 查晓峰 | A hot plate drying bed continuous vacuum drying unit |
| CN102865722A (en) * | 2012-10-16 | 2013-01-09 | 立德泰勀(上海)科学仪器有限公司 | Internal heating type vacuum drying oven |
| CN205337477U (en) * | 2015-12-09 | 2016-06-29 | 北京汇华东泽生物有限公司 | Vacuum drying oven |
| CN205536920U (en) * | 2016-02-20 | 2016-08-31 | 宁波大学 | Electrical heating type vacuum drying oven |
| CN206755748U (en) * | 2017-05-22 | 2017-12-15 | 浏阳市银丰机械制造有限公司 | Modified form directly-heated type vacuum drier |
Non-Patent Citations (1)
| Title |
|---|
| 冶金工业部建设协调司等编: "《钢铁企业采暖通风设计手册》", 31 December 1996, 冶金工业出版社 * |
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Application publication date: 20170725 |