CN108224907A - For the freeze-drying unit and milling device of thermosetting powder coating - Google Patents
For the freeze-drying unit and milling device of thermosetting powder coating Download PDFInfo
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- CN108224907A CN108224907A CN201810042197.3A CN201810042197A CN108224907A CN 108224907 A CN108224907 A CN 108224907A CN 201810042197 A CN201810042197 A CN 201810042197A CN 108224907 A CN108224907 A CN 108224907A
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- drying unit
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- refrigerant
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- 238000004108 freeze drying Methods 0.000 title claims abstract description 28
- 239000000843 powder Substances 0.000 title claims abstract description 25
- 229920001187 thermosetting polymer Polymers 0.000 title claims abstract description 23
- 238000000576 coating method Methods 0.000 title claims abstract description 22
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- 238000003801 milling Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 19
- 239000003507 refrigerant Substances 0.000 claims description 19
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 230000004087 circulation Effects 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 7
- 238000005057 refrigeration Methods 0.000 abstract description 7
- 238000007791 dehumidification Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000008676 import Effects 0.000 description 12
- 238000007710 freezing Methods 0.000 description 8
- 230000008014 freezing Effects 0.000 description 8
- 230000009477 glass transition Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 230000009172 bursting Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002528 anti-freeze Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- 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
- F26B5/06—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 the process involving freezing
- F26B5/065—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 the process involving freezing the product to be freeze-dried being sprayed, dispersed or pulverised
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
A kind of freeze-drying unit and milling device for thermosetting powder coating, wherein freeze-drying unit includes several set refrigerant-cycle systems and air treatment system；The refrigerant-cycle systems include the compressor, condenser, shut-off valve, device for drying and filtering, expansion valve, evaporator and the gas-liquid separator that recycle connection according to this by pipeline；The evaporator comes wind direction equipped with air intake filter；The milling device includes scratch system and above-mentioned freeze-drying unit, the evaporator for being freeze-dried unit are arranged between air intake filter and scratch system, and the air-introduced machine that the air after evaporator is freeze-dried introduces scratch system is additionally provided in scratch system.The present invention is a kind of freeze-drying unit energy-efficient, applied widely with refrigeration+dehumidification function, it has the characteristics that efficiency height, preventing freeze in winter, leaving air temp adjustable range are wider, easy for installation, simple and compact for structure low with operating cost.
Description
Technical field
The present invention relates to milling manufacture field more particularly to a kind of freeze-drying unit for thermosetting powder coating with
And milling device.
Background technology
Thermosetting powder coating is a kind of not solvent-laden novel solid powder type coating preparation, have it is solvent-free, pollution-free, can
Recycling, environmental protection, save the energy and resource, reduce labor intensity with coating machinery intensity it is high the features such as, at present in metal spraying row
Industry has obtained development at full speed, and the resin as the main film forming matter of powdery paints is the relatively low organic polymer polymerization of molecular weight
Object, these resins have a kind of physical property：At a lower temperature, it shows as hard and crisp vitreousness, works as temperature rise
During to certain numerical value, resin starts to be changed into certain elasticity and generate the state of adhesion, and less than this temperature, resin returns again
Nonadherent vitreousness is returned to, the glassy state of resin and the temperature of adhesion state phase co-conversion are called the glass transition temperature of resin.
Different resins has different glass transition temperatures, if the glass transition temperature of epoxy resin and polyester resin is at 50 DEG C or so, increases
The glass transition temperature of photo etching (701) is at 30 DEG C or so, and the glass transition temperature of liquid levelling agent is then less than 0 DEG C.Powdery paints is matched
The material additive amount of low Tg is bigger in side, then the glass transition temperature of system is lower.
For the glass transition temperature of most of thermosetting powder coatings at 50 DEG C or so, Subtropic of China Area during Summer temperature can be high
Up to 37 DEG C, and water capacity is big, and the fresh air of flour mill sucking must be processed to dry-bulb temperature tg≤12 DEG C, and d≤8g/kg is done
Air can just prevent powder agglomates.At present, most thermosetting powder coating manufacturers use this scheme：
7~10 DEG C of chilled water is produced using cooling-water machine and is stored in attemperater；
7~10 DEG C in water tank of chilled water is delivered to surface cooler with water pump and carries out hot friendship with the fresh air from outdoor sucking
It changes, after air carries out freeze-drying process, is sent into flour mill and cools down to powder thermosetting material.
The representative technical solution of said program is a kind of small-sized as disclosed in Chinese patent ZL201521017369.X
Water-cooled cooling dehumidification device, this scheme belongs to secondary heat exchange using water as refrigerating medium, and needs to configure the power-equipments such as water pump,
There are 25%~30% energy losses, are unfavorable for energy saving.In actual use, also often occur winter draining be not thorough or
Forget draining and lead to surface cooler bursting by freezing, cause unnecessary economic loss.
Due to the use of water as refrigerating medium, unit leaving water temperature cannot be below 2 DEG C, no it will cause heat exchanger tube bursting by freezing, this
The production of the relatively low thermosetting powder coating of certain glass transition temperatures is limited, needs to add in chilled water system antifreeze
Liquid, and refrigeration equipment and surface cooler also need to re-start design, pipeline heat insulation etc. is also required to thickening processing, this, which just brings, makes
It is higher with cost, the problem of maintenance difficulties are larger.
Invention content
The object of the present invention is to provide a kind of freeze-drying unit and milling device for thermosetting powder coating, it
Have the advantages that structure is reliable, energy-efficient and applicability is good.
The present invention is achieved like this, a kind of freeze-drying unit for thermosetting powder coating, which is characterized in that
It includes several set refrigerant-cycle systems and the air treatment system with the endothermic section cooperation of the refrigerant-cycle systems；Institute
Refrigerant-cycle systems are stated to include recycling the compressor of connection, condenser, shut-off valve, device for drying and filtering, swollen according to this by pipeline
Swollen valve, evaporator and gas-liquid separator；The evaporator comes wind direction equipped with air intake filter.
The freeze-drying unit for being used for thermosetting powder coating includes two sets of refrigerant-cycle systems；First set refrigerant
The circulatory system includes recycling the first compressor of connection, the first condenser, the first shut-off valve, first dried according to this by pipeline
Filter, the first expansion valve, first evaporator and the first gas-liquid separator；Second set of refrigerant-cycle systems includes passing through pipeline
The second compressor of connection, the second condenser, the second shut-off valve, the second device for drying and filtering, the second expansion valve, second are recycled according to this
Grade evaporator and the second gas-liquid separator；The first evaporator and second level evaporator are arranged on according to this from air intake filter
In the fresh air channel of process.
The air intake filter includes at least the primary filter and medium effeciency filter integrated, and primary filter
Inlet side and the air side of medium effeciency filter be equipped with differential manometer.
Preferably：The compressor is rolling rotor-type, vortex, piston type or screw compressor.
Preferably：The condenser is shell-tube type, bushing type, board-like or finned cooler.
Preferably：The expansion valve is heating power expansion valve, electric expansion valve or capillary.
Preferably：The evaporator is finned or micropassage type evaporator.
The air intake filter material is polyurethane foam cotton, glass fibre cotton, nylon wire, non-woven fabrics, PP or stainless steel
Metal mesh.
The present invention also describes a kind of milling device, it includes scratch system, which is characterized in that it further includes above-mentioned freezing
Dryer group, the evaporator for being freeze-dried unit is arranged between air intake filter and scratch system, and is also set in scratch system
There is the air-introduced machine that the air after evaporator is freeze-dried introduces scratch system.
Beneficial effects of the present invention are：The present invention is a kind of energy-efficient, applied widely with refrigeration+dehumidification function
Freeze-drying unit, it overcomes the problems, such as, and common handpiece Water Chilling Units efficiency is low, of high cost, winter easy bursting by freezing, has that efficiency is high, the winter
The features such as season is antifreeze, leaving air temp adjustable range is wider, easy for installation, floor space smaller；It is improving powder thermosetting painting
Production efficiency can be greatly improved while item matter, and the installation space of cooling system can be saved, simplifies structure, reduces fortune
Row cost.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of the invention.
In the figure the 1, first compressor 2, the first condenser 3, the first shut-off valve 4, the first device for drying and filtering 5,
First expansion valve 6, first evaporator 7, the first gas-liquid separator 8, the second compressor 9, the second condenser
10th, the second shut-off valve 11, the second device for drying and filtering 12, the second expansion valve 13, second level evaporator 14, the second gas-liquid
Separator 15, air intake filter 16, air-introduced machine 17, scratch system.
Specific embodiment
The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, the invention is realized in this way, it is described to include for the freeze-drying unit of thermosetting powder coating
Several set refrigerant-cycle systems and the air treatment system with the endothermic section cooperation of the refrigerant-cycle systems；The refrigeration
The agent circulatory system includes recycling the compressor of connection, condenser, shut-off valve, device for drying and filtering, expansion valve, steaming according to this by pipeline
Send out device and gas-liquid separator；The evaporator comes wind direction equipped with air intake filter 15；The present invention be it is a kind of have refrigeration+
The freeze-drying unit energy-efficient, applied widely of dehumidification function, in actual use, the present invention can be arranged as required to
More set refrigerant-cycle systems and corresponding air treatment system, operation principle are such：Compressor to refrigerant into
Row acting, by refrigerant vapor compression subsequently into condenser heat rejection, is condensed into the highly pressurised liquid of proper temperature, then flows according to this
Through shut-off valve and device for drying and filtering, and the working medium that disclosure satisfy that refrigeration needs temperature is converted into after the throttling pressure regulation of expanded valve, and
Finally working medium of the endothermic disintergration for low-temp low-pressure in evaporator returns to compression after gas-liquid separator carries out gas-liquid separation
Machine completes refrigerant circulation；The present invention is relative to traditional water pump type lyophilization system, the refrigerant closed-loop formula cycle used
Process, not only structure is simpler, reduces an evaporator, chilled water pump and chilled water pipe than existing indirect heat exchange technology
Road reduces cost；Also be able to according to operating mode need flexibly setting refrigerant-cycle systems and with the refrigerant-cycle systems
The quantity of the air treatment system of cooperation, easy for installation, floor space smaller, and in winter cold region in use, can be thorough
Preventing winter forgets the phenomenon that draining or draining are not thorough and cause heat exchanger bursting by freezing, refrigerant and air direct heat transfer, reduces
Heat transfer temperature difference and loss of refrigeration capacity, improve efficiency, and can effectively reduce the start-stop time of compressor, extend compressor and use the longevity
Life, and energy consumption of compressor can be reduced, reduce operating cost.
Result and the course of work are elaborated so that two-stage shown in FIG. 1 cools down freeze-drying unit as an example below, the freezing
Dryer group includes two sets of refrigerant-cycle systems；First set refrigerant-cycle systems include recycling connection according to this by pipeline
First compressor 1, the first condenser 2, the first shut-off valve 3, the first device for drying and filtering 4, the first expansion valve 5, first evaporator
6 and first gas-liquid separator 7；Second set of refrigerant-cycle systems includes the second compressor for recycling connection according to this by pipeline
8th, the second condenser 9, the second shut-off valve 10, the second device for drying and filtering 11, the second expansion valve 12, second level evaporator 13 and
Two gas-liquid separators 14；The first evaporator 6 and second level evaporator 13, which are arranged on according to this from air intake filter 15, to be passed through
Fresh air channel on；The air intake filter 15 includes at least the primary filter and medium effeciency filter integrated, and just
It imitates the inlet side of filter and the air side of medium effeciency filter is equipped with differential manometer；One side primary filter and medium effeciency filter
The quality of air-treatment is ensure that, on the other hand, using the efficiency of differential manometer detection air-treatment, when pressure difference is more than setting value
When, then 15 windage of air intake filter is larger, shows and needs to change filter.
In actual installation, 1 exhaust outlet of the first compressor is connect with 2 import of the first condenser, the first condenser 2 outlet with
First shut-off valve, 3 import connects, and the outlet of the first shut-off valve 3 is connect with 4 import of the first device for drying and filtering, the first device for drying and filtering 4
Outlet is connect with 5 import of the first expansion valve, and the outlet of the first expansion valve 5 is connect with 6 import of first evaporator, first evaporator
6 outlets are connect with 7 import of the first gas-liquid separator, and the outlet of the first gas-liquid separator 7 is connect with 1 air entry of the first compressor.The
Two compressors, 8 exhaust outlet is connect with 9 import of the second condenser, and the outlet of the second condenser 9 is connect with 10 import of the second shut-off valve,
The outlet of second shut-off valve 10 is connect with 11 import of the second device for drying and filtering, the outlet of the second device for drying and filtering 11 and the second expansion valve 12
Import connects, and the outlet of the second expansion valve 12 is connect with 13 import of second level evaporator, the outlet of second level evaporator 13 and the second gas
14 import of liquid/gas separator connects, and the outlet of the second gas-liquid separator 14 is connect with 8 air entry of the second compressor.
When equipment is run, refrigerant is filled in refrigerant-cycle systems.Circuit 1：Low-temperature low-pressure refrigerant steam is through
Entered in the first condenser 2 by discharge duct after one compressor, 1 boil down to high pressure high temperature vapor, with cooling medium by refrigerant
Steam condensation become medium temperature highly pressurised liquid, after flow through the first shut-off valve 3, the first device for drying and filtering 4 after, pass through the first expansion valve 5
After carrying out throttling decrease temperature and pressure, the gas-liquid mixture of low-temp low-pressure is converted into, then into first evaporator 6, is flowed absorbing
After crossing the heat in the air of first evaporator 6, refrigerant is evaporated to the refrigerant gas or gas-liquid mixture of low-temp low-pressure,
Enter the first gas-liquid separator 7 through pipeline, carry out gas-liquid separation, it is ensured that only the refrigerant vapour of saturation enters the first compressor
1；In cycles, the cycle of refrigerant-cycle systems is just completed.
Circuit 2：Low-temperature low-pressure refrigerant steam passes through discharge duct after 8 boil down to high pressure high temperature vapor of the second compressor
Into in the second condenser 9, with cooling medium by refrigerant vapour condensation become medium temperature highly pressurised liquid, after flow through the second shut-off valve
10th, after the second device for drying and filtering 11, after carrying out throttling decrease temperature and pressure by the second expansion valve 12, it is converted into the gas-liquid of low-temp low-pressure
Mixture, then into second level evaporator 13, after the heat during 13 air of second level evaporator is flowed through in absorption, refrigerant steams
The refrigerant gas or gas-liquid mixture for low-temp low-pressure are sent out, enters the second gas-liquid separator 14 through pipeline, carries out gas-liquid separation,
Ensure that the refrigerant vapour of only saturation enters the second compressor 8；In cycles, following for refrigerant-cycle systems is just completed
Ring.
Air treatment system：After fresh air passes sequentially through the first effect of air intake filter 15, medium effeciency filter filtering, then through first
Grade evaporator 6 and second level evaporator 13 carry out cool-down dehumidification.
Simultaneously, in order to further improve the convenience of control, and energy consumption is reduced, improves efficiency, the present invention is also to each
Design is optimized in a functional component, wherein the compressor is rolling rotor-type, vortex, piston type or screw-compression
Machine；The condenser is shell-tube type, bushing type, board-like or finned cooler；The expansion valve is heating power expansion valve, electronics is swollen
Swollen valve or capillary；The evaporator is finned or micropassage type evaporator；15 material of air intake filter is polyurethane
Foamed cotton, glass fibre cotton, nylon wire, non-woven fabrics, PP or stainless steel wire mesh；Certainly, the unit can be monoblock type,
Or it is split type, to meet actual installation and requirements of one's work；Certainly, it in order to meet the needs actually controlled, is using
During more set refrigerant-cycle systems, can at the evaporator of every suit refrigerant-cycle systems set temperature sensor, the temperature
Sensor is connected with PLC controller, compressor, condenser and the expansion valve of every suit refrigerant-cycle systems with the PLC
Controller is connected, in this way can according to actual needs, and PLC controller controls the working condition of refrigerant-cycle systems,
In continuous freeze-drying, the temperature of evaporator can be reduced successively along airflow direction so that airflow freezing drying is high-efficiency continuous.
The invention also discloses a kind of milling devices, it includes scratch system 17, is structurally characterized in that, it further includes above-mentioned
Unit is freeze-dried, the evaporator for being freeze-dried unit is arranged between air intake filter 15 and scratch system 17, and the system that is milled
The air-introduced machine 16 that the air after evaporator is freeze-dried introduces scratch system 17 is additionally provided in system 17；Air treatment system：Newly
After the air intake filter 15 that wind passes sequentially through filters, then cool down through first order evaporator fin 6 and second level finned evaporator 13
Flour mill is inhaled into after dehumidifying, for reducing the temperature of powder thermosetting；In actually controlling, the compressor in unit can be used
Full frequency conversion type or frequency conversion+determine frequency combined type；Certain unit can be two-stage cooling, single-stage cooling, three-level or more series
What is cooled down is any；When for single-stage cooling system, it only include by pipeline recycle according to this connection the first compressor 1, the
One condenser 2, the first shut-off valve 3, the first device for drying and filtering 4, the first expansion valve 5,6 and first gas-liquid separation of first evaporator
Device 7.When for three-level more than cooling system, the freeze-drying unit needs to increase corresponding refrigerant-cycle systems circuit
Quantity.
In actual use, compared with prior art, it has the following advantages：1st, cooled down using two-stage, improve compressor
Energy Efficiency Ratio, using frequency-changeable compressor, system comprehensive energy efficiency can improve 25%~30%, can effectively improve freeze-drying unit and become
Efficient stable is run under operating mode, reduces the fluctuation of leaving air temp；2nd, region use scope is broad, and leaving air temp adjustable range is wider
Extensively；3rd, under cold climate conditions, heat exchanger bursting by freezing is prevented；4th, it is easy for installation, floor space is small；5th, modularized design, separate unit system
During cooling system failure, complete machine normal operation is not influenced.
Claims (9)
1. a kind of freeze-drying unit for thermosetting powder coating, which is characterized in that it includes several set refrigerant circulations
System and the air treatment system with the endothermic section cooperation of the refrigerant-cycle systems；
The refrigerant-cycle systems include the compressor, condenser, shut-off valve, the dry filter that recycle connection according to this by pipeline
Device, expansion valve, evaporator and gas-liquid separator；The evaporator comes wind direction equipped with air intake filter (15).
2. it to be used for the freeze-drying unit of thermosetting powder coating as described in claim 1, which is characterized in that it includes two sets of systems
Refrigerant cycle system；
First set refrigerant-cycle systems include the first compressor (1), the first condenser that recycle connection according to this by pipeline
(2), the first shut-off valve (3), the first device for drying and filtering (4), the first expansion valve (5), first evaporator (6) and the first gas-liquid point
From device (7)；
Second set of refrigerant-cycle systems includes the second compressor (8), the second condenser that recycle connection according to this by pipeline
(9), the second shut-off valve (10), the second device for drying and filtering (11), the second expansion valve (12), second level evaporator (13) and the second gas
Liquid/gas separator (14)；
The first evaporator (6) and second level evaporator (13) are arranged on the fresh air passed through from air intake filter (15) according to this
On channel.
3. it to be used for the freeze-drying unit of thermosetting powder coating as claimed in claim 2, which is characterized in that the air inlet filtering
Device (15) including at least the primary filter and medium effeciency filter integrated, and the inlet side of primary filter and in imitated
The air side of filter is equipped with differential manometer.
4. the freeze-drying unit of thermosetting powder coating to be used for as described in any one in claim 1-3, which is characterized in that
The compressor is rolling rotor-type, vortex, piston type or screw compressor.
5. the freeze-drying unit for thermosetting powder coating as described in any one in claim 1-3, feature exist
In the condenser is shell-tube type, bushing type, board-like or finned cooler.
6. the freeze-drying unit for thermosetting powder coating as described in any one in claim 1-3, feature exist
In the expansion valve is heating power expansion valve, electric expansion valve or capillary.
7. the freeze-drying unit for thermosetting powder coating as described in any one in claim 1-3, feature exist
In the evaporator is finned or micropassage type evaporator.
8. the freeze-drying unit for thermosetting powder coating as described in any one in claim 1-3, feature exist
In air intake filter (15) material is polyurethane foam cotton, glass fibre cotton, nylon wire, non-woven fabrics, PP or stainless steel are golden
Belong to net.
9. a kind of milling device, it includes scratch system (17), which is characterized in that it further includes any one in claim 1-8
Freeze-drying unit described in, be freeze-dried unit evaporator be arranged on air intake filter (15) and scratch system (17) it
Between, and the air-introduced machine that the air after evaporator is freeze-dried introduces scratch system (17) is additionally provided in scratch system (17)
(16)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042197.3A CN108224907A (en) | 2018-01-17 | 2018-01-17 | For the freeze-drying unit and milling device of thermosetting powder coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042197.3A CN108224907A (en) | 2018-01-17 | 2018-01-17 | For the freeze-drying unit and milling device of thermosetting powder coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108224907A true CN108224907A (en) | 2018-06-29 |
Family
ID=62642071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810042197.3A Pending CN108224907A (en) | 2018-01-17 | 2018-01-17 | For the freeze-drying unit and milling device of thermosetting powder coating |
Country Status (1)
| Country | Link |
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| CN (1) | CN108224907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759137A (en) * | 2018-07-18 | 2018-11-06 | 昆山万盛电子有限公司 | A kind of cooling device and epoxy powder sealing machine applied to epoxy powder sealing machine |
| CN112833624A (en) * | 2021-01-15 | 2021-05-25 | 浙江青风环境股份有限公司 | Triple-generation multifunctional powder cold drying machine |
| CN113405324A (en) * | 2021-07-21 | 2021-09-17 | 广东葆德科技有限公司 | Low-pressure freeze dryer |
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| CN105627502A (en) * | 2014-11-28 | 2016-06-01 | 南京五洲制冷集团有限公司 | Direct-current variable-frequency all-fresh-air air conditioning unit |
| CN106140439A (en) * | 2016-08-26 | 2016-11-23 | 玉石塑粉有限公司 | Powdery paints closed cycle flour milling unit |
| CN206469445U (en) * | 2016-12-02 | 2017-09-05 | 南京五洲制冷集团有限公司 | A kind of big enthalpy difference type condensing units air-conditioner set of all-fresh air |
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| CN108759137A (en) * | 2018-07-18 | 2018-11-06 | 昆山万盛电子有限公司 | A kind of cooling device and epoxy powder sealing machine applied to epoxy powder sealing machine |
| CN112833624A (en) * | 2021-01-15 | 2021-05-25 | 浙江青风环境股份有限公司 | Triple-generation multifunctional powder cold drying machine |
| CN113405324A (en) * | 2021-07-21 | 2021-09-17 | 广东葆德科技有限公司 | Low-pressure freeze dryer |
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Application publication date: 20180629 |