CN108917376A - Dehumidification type recuperation of heat closed circulation heat pump drying system under high dirt environment - Google Patents
Dehumidification type recuperation of heat closed circulation heat pump drying system under high dirt environment Download PDFInfo
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- CN108917376A CN108917376A CN201810865370.XA CN201810865370A CN108917376A CN 108917376 A CN108917376 A CN 108917376A CN 201810865370 A CN201810865370 A CN 201810865370A CN 108917376 A CN108917376 A CN 108917376A
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- Prior art keywords
- dedusting
- heat pump
- heating channel
- dehumidifying heating
- evaporator
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- 238000001035 drying Methods 0.000 title claims abstract description 56
- 238000007791 dehumidification Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000003595 mist Substances 0.000 claims abstract description 11
- 238000009833 condensation Methods 0.000 claims description 28
- 230000005494 condensation Effects 0.000 claims description 28
- 239000003507 refrigerant Substances 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 22
- 238000001704 evaporation Methods 0.000 description 11
- 238000005265 energy consumption Methods 0.000 description 9
- 238000000605 extraction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000013070 direct material Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect 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
- 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
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- 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
- F26B21/003—Supply-air or gas filters
-
- 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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses dehumidification type recuperation of heat closed circulation heat pump drying systems under a kind of high dirt environment, including dedusting mechanism, upstream centrifugal blower, downstream centrifugal blower, dehumidifying heating channel and N group heat pump system, N are positive integer；Dedusting mechanism has dedusting blast pipe and dedusting discharge pipe；The air inlet in the air outlet connection dehumidifying heating channel of upstream centrifugal blower, the air inlet of the air outlet connection downstream centrifugal blower in dehumidifying heating channel, the air outlet of downstream centrifugal blower are used to connect the air inlet of drying equipment；The evaporator and condenser of every group of heat pump system are set to the inside in dehumidifying heating channel；In dehumidifying heating channel vertically roam all around the would to being successively arranged first evaporator to N grades of evaporators, mist water separator and first order condenser to N grades of condensers.The present invention in drying course to environment without fugitive dust, can dehumidify and more energy saving, improve the drying effect of material.
Description
Technical field
The present invention relates to the heat pump drying systems under drying technology field more particularly to high dirt environment.
Background technique
Tradition drying form is to generate steaming by fuel such as burning coal, natural gas, diesel oil, biological particles, alcohol at present
Vapour, heat is transported to material drying surface by tubular heat exchanger circulation classification by steam, thus material drying itself.Traditional
Drying mode relies on fuel combustion, has also released a large amount of toxic and harmful gas while generating heat.Meanwhile drying hot wind
Fugitive dust can be generated when flowing through material, it is more serious in the fugitive dust that some drying occasions generate；The fugitive dust generated when drying is directly arranged
It is put in atmosphere, great destruction is brought to ambient enviroment.Since traditional drying mode capacity usage ratio is very low, the heat source longevity
Life also only has 4 ~ 5 years, thus use cost is excessively high.And the market price fluctuations of the above fuel are very big, give product drying cost
Control brings very big difficulty.
Currently, market lack a kind of drying course without fugitive dust, more energy-efficient heat pump drying system.
Summary of the invention
The purpose of the present invention is to provide a kind of drying course to environment without fugitive dust, can dehumidify and more energy-efficient high dirt
Dehumidification type recuperation of heat closed circulation heat pump drying system under environment.
To achieve the above object, dehumidification type recuperation of heat closed circulation heat pump drying system includes under high dirt environment of the invention
Dedusting mechanism, upstream centrifugal blower, downstream centrifugal blower, dehumidifying heating channel and N group heat pump system, N are positive integer；
Using the flow direction of wind as downstream direction；
Dedusting mechanism has the dedusting blast pipe of the air outlet for connecting drying equipment and the air inlet of connection upstream centrifugal blower
The dedusting discharge pipe of mouth；
The air inlet in the air outlet connection dehumidifying heating channel of upstream centrifugal blower, under the air outlet connection in dehumidifying heating channel
The air inlet of centrifugal blower is swum, the air outlet of downstream centrifugal blower is used to connect the air inlet of drying equipment；
Every group of heat pump system includes the compressor being connected by circulation by refrigerant line, condenser, expansion valve and evaporator；Often
The compressor and expansion valve of group heat pump system are set to outside dehumidifying heating channel, the evaporator and condenser of every group of heat pump system
It is set to the inside in dehumidifying heating channel；
Dehumidifying heating channel in vertically roam all around the would to be successively arranged first evaporator to N grades of evaporators, mist water separator with
And first order condenser is to N grades of condensers；The sum of series of condenser and evaporator in same heat pump system is N+1.
It further include having the separate type heat pipe exchanger being arranged in dehumidifying heating channel, separate type heat pipe exchanger, which has, to be steamed
Hair section and condensation segment, evaporator section and condensation segment are linked together by medium pipeline；The evaporator section of separate type heat pipe exchanger is set
It sets in the dehumidifying heating channel of first evaporator upstream side, the condensation segment setting of separate type heat pipe exchanger is cold in the first order
In dehumidifying heating channel between condenser and mist water separator.
Further include having threeway, an interface of threeway be separately connected dehumidifying heating channel upstream end, threeway another
Interface connects the air outlet of upstream centrifugal blower, and the third interface of threeway is connected with bypass pipe, the other end connection of bypass pipe
On dehumidifying heating channel between mist water separator and first order condenser, bypass pipe is equipped with air door；The bypass pipe and
Insulating layer is equipped with outside threeway；
The air outlet of upstream centrifugal blower connects the air inlet in dehumidifying heating channel by the threeway.
Dehumidifying below the first evaporator to N grades of evaporators heats channel to having condensation water collection water
Slot, the bottom of condensation water collection sink are connected with downwards condensate draining pipe, and condensate draining pipe is equipped with drain valve.
The dedusting mechanism includes up big and down small dedusting tank, and dedusting pot bottom is connected with wind stopping device；Dedusting blast pipe connects
It connects on the dedusting pot sidewall；Dedusting upper end connects the dedusting discharge pipe；
Spacing side by side is equipped with several vertically arranged foldable filter elements in dedusting tank above dedusting blast pipe, and each foldable filter element has
There is the inner hole of top opening, the inner hole of each foldable filter element is connected with dedusting discharge pipe respectively.
Dust collecting box is equipped with below the wind stopping device.
The dedusting mechanism further includes having back-blowing device, and back-blowing device includes air pump, and the air inlet pipe of air pump is communicated with atmosphere,
The escape pipe of air pump is connected with high-pressure buffering pot, and high-pressure buffering pot is connected with several anti-blowpipes, and anti-blowpipe and foldable filter element are one by one
It is correspondingly arranged and anti-blowpipe is communicated with the inner hole of foldable filter element；It is equipped on each anti-blowpipe for controlling the logical of blowback high pressure draught
Disconnected impulse electromagnetic valve.
The dedusting mechanism further includes the pressure difference switch having for detecting air filtering core inside and outside differential pressure, and pressure difference switch setting exists
At the top of dedusting tank between dedusting discharge pipe.
The present invention has the advantage that：
Present invention uses unique dust collecting installation, wind path is closed circulation again, so drying course is externally without fugitive dust, greatly
Reduce environmental pollution greatly.Air-flow is by obtaining cool-down dehumidification when evaporator at different levels.
Since heat pump system is the carrying for being converted into mechanical energy using electric energy and refrigerant being caused to realize heat in systems, without
It is the direct conversion thermal energy of electric energy, so its capacity usage ratio is much higher than traditional baking chamber, it is the 1/4 of traditional baking chamber use cost ---
1/2。
Further, the sum of series of the condenser in same heat pump system and evaporator is N+1, in each group heat pump system, is steamed
The difference for sending out the condensing pressure in the evaporating pressure and condenser in device is the most balanced, compressor in such each group heat pump system
Power（Load）It is average.Under conditions of overall power is certain, the power of multiple compressors is average, and whole energy consumption is got over
It is low.Therefore, the sum of series of the condenser in same heat pump system and evaporator is N+1, just reduces multiple groups heat pump on the whole
The energy consumption of system.
Only condensed water and the cold dry air that the present invention is discharged in whole production process, on surrounding enviroment without influence, pollution-free zero
Discharge.
Upstream side of the evaporator section of separate type heat pipe exchanger in dehumidifying heating channel（Air-flow herein is just from drying equipment
Outflow, temperature are higher）The heat in air-flow is absorbed, and by the condensation segment of separate type heat pipe exchanger is released into heat at different levels
Channel is heated in the dehumidifying in evaporator downstream.In this way, it is possible to reduce the heat that evaporators at different levels are absorbed from air-flow is avoided by each
Gas flow temperature is too low after grade evaporator heat absorption, and air-flow also can be from separate type heat pipe exchanger before by first order condenser
Heat is absorbed at condensation segment, guarantees that also there is enough condensation temperatures at first order condenser, guarantees system stable operation.It is at different levels
The evaporator section of evaporator and separate type heat pipe exchanger absorbs the heat in air-flow, therefore changes compared to separate heat pipe is not provided with
Hot device, gas flow temperature can be even lower after evaporators at different levels, guarantee effect on moisture extraction（Gas flow temperature is lower, dehumidifying effect
Fruit is better）.After air-flow effect on moisture extraction is promoted, the air-flow that drying equipment is reentered after channel is heated in dehumidifying is more dry,
Moisture more from material can be absorbed in drying equipment, naturally also improve the drying effect of material.
The setting of bypass pipe can control bypass wind air volume, when gas flow temperature is lower by the open degree of air door
When, so that part or all of air-flow is directly over condenser without evaporator.Staff can be according to running situation
Adjust door opening amount.When air door is opened, since fraction is without evaporator, thus the temperature at evaporator can drop
Low, the cooling capacity that the side wall in the channel of dehumidifying heating at this time distributes outward can increase naturally.
The setting of insulating layer, it is possible to reduce the outside windage of heat in high temperature gas flow reduces system energy consumption.
The setting of condensation water collection sink and drain valve is discharged condensed water convenient for opening drain valve, prevents condensed water from removing
Wet heating channel is cumulative, while can close drain valve after draining, and prevents the higher air-flow of temperature from flowing by drainpipe
Environment causes energy loss.Dedusting mechanism structure is simple, can effectively be filtered by several foldable filter elements to air-flow.Dirt
Native collecting box can prevent dust from polluting ground, and spread apart to pollute environment.
The setting of back-blowing device, convenient for the dust that adheres in foldable filter element side wall more, filtration resistance increase, filter effect decline
When, high pressure gas is generated using air pump, high pressure gas is evenly distributed to each anti-blowpipe using high-pressure buffering pot, opens pulse electricity
Magnet valve makes high pressure draught enter the inner hole of foldable filter element by anti-blowpipe blowback, so that foldable filter element is expanded and is shaken, make its surface
Dust falls off, so that foldable filter element be made to restore normal filtering function.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；Direction shown in arrow in Fig. 1 is fluid at this（Air-flow or condensed water）'s
Flow direction；
Fig. 2 is the structural schematic diagram of heat pump system.Direction shown in arrow is the flow direction of refrigerant in Fig. 2.
Specific embodiment
As depicted in figs. 1 and 2, dehumidification type recuperation of heat closed circulation heat pump drying system includes under high dirt environment of the invention
Dedusting mechanism, upstream centrifugal blower 1, downstream centrifugal blower 2, dehumidifying heating channel 3 and N group heat pump system, N are positive integer；This
In embodiment, N=3.
Using the flow direction of wind as downstream direction；
Dedusting mechanism have for connect drying equipment air outlet dedusting blast pipe 4 and connection upstream centrifugal blower 1 into
The dedusting discharge pipe 5 in air port；Drying equipment such as dries the dress of workshop, drying room or drying tower for direct material drying
It sets, material is dried in drying equipment.Drying equipment is conventional equipment, not shown.
The air inlet 6 in the air outlet connection dehumidifying heating channel of upstream centrifugal blower 1, the air outlet 7 in dehumidifying heating channel
The air inlet of downstream centrifugal blower 2 is connected, the air outlet 8 of downstream centrifugal blower is used to connect the air inlet of drying equipment；
Every group of heat pump system includes the compressor 10 being connected by circulation by refrigerant line 9, condenser 11, expansion valve 12 and steams
Send out device 13；The compressor 10 and expansion valve 12 of every group of heat pump system are set to outside dehumidifying heating channel 3, every group of heat pump system
Evaporator 13 and condenser 11 are set to the inside in dehumidifying heating channel 3；
Dehumidifying heating channel 3 in vertically roam all around the would to be successively arranged first evaporator 14, second level evaporator 15 to N grade steamings
Send out device 16（It is third evaporator in the present embodiment）, mist water separator 17 and first order condenser 18, second level condenser
19 to N grades condensers 20（It is third level condenser in the present embodiment）；Condenser 11 and evaporator in same heat pump system
13 sum of series is N+1, N+1=4 in the present embodiment.That is first evaporator 14 and N grades of condensers 20 belongs to same heat pump
System, the 2nd grade of evaporator and N-1 grades of condensers belong to same heat pump system, and so on, N grades of evaporators 16 and first
Grade condenser 18 belongs to same heat pump system；
The sum of series of condenser 11 in same heat pump system and evaporator 13 is N+1, in each group heat pump system, in evaporator 13
Evaporating pressure and the condensing pressure in condenser 11 difference it is the most balanced, the function of compressor 10 in such each group heat pump system
Rate（Load）It is average.Under conditions of overall power is certain, the power of multiple compressors 10 is average, and whole energy consumption is got over
It is low.Therefore, the sum of series of the condenser 11 in same heat pump system and evaporator 13 is N+1, just reduces multiple groups on the whole
The energy consumption of heat pump system.
It further include having the separate type heat pipe exchanger being arranged in dehumidifying heating channel 3, separate type heat pipe exchanger has
Evaporator section 21 and condensation segment 22, evaporator section 21 and condensation segment 22 are linked together by medium pipeline（Separate type heat pipe exchanger
For routine techniques, specific structure is no longer described in detail, medium pipeline not shown）；The setting of evaporator section 21 of separate type heat pipe exchanger exists
In the dehumidifying heating channel 3 of 14 upstream side of first evaporator, the condensation segment 22 of separate type heat pipe exchanger is arranged in the first order
In dehumidifying heating channel 3 between condenser 18 and mist water separator 17.There is medium, such as fluorine benefit in separate type heat pipe exchanger
High or water；Delivery pump is preferably provided on medium pipeline, delivery pump can guarantee that the liquid refrigerant of condensation segment condensation swimmingly returns
It flow to evaporator section.Delivery pump is routine techniques, not shown.
This structure can make the evaporator section 21 of separate type heat pipe exchanger in the upstream side in dehumidifying heating channel 3（Herein
Air-flow just flowed out from drying equipment, temperature is higher）Absorb the heat in air-flow, and the condensation for passing through separate type heat pipe exchanger
The dehumidifying that heat is released into evaporator downstreams at different levels is heated channel 3 by section 22.In this way, it is possible to reduce evaporators at different levels are from air-flow
The heat of absorption avoids the gas flow temperature after evaporators at different levels absorb heat too low, and air-flow is before process first order condenser 18
Heat can be absorbed from the condensation segment 22 of separate type heat pipe exchanger, guarantee also to have at first order condenser 18 enough cold
Solidifying temperature, guarantees system stable operation.The evaporator section 21 of evaporators and separate type heat pipe exchanger at different levels absorbs in air-flow
Heat, therefore compared to separate type heat pipe exchanger is not provided with, gas flow temperature can be even lower after evaporators at different levels, be protected
Demonstrate,prove effect on moisture extraction（Gas flow temperature is lower, and effect on moisture extraction is better）.After air-flow effect on moisture extraction is promoted, after channel 3 is heated in dehumidifying
The air-flow for reentering drying equipment is more dry, and moisture more from material can be absorbed in drying equipment, natural
Also the drying effect of material is improved.
It further include having threeway 23, an interface of threeway 23 is separately connected the upstream end in dehumidifying heating channel 3, threeway 23
Another interface connects the air outlet of upstream centrifugal blower 1, and the third interface of threeway 23 is connected with bypass pipe 24, bypass pipe 24
The other end be connected to the dehumidifying between mist water separator 17 and first order condenser 18 heating channel 3 on, set on bypass pipe 24
There is air door 25；Insulating layer is equipped with outside the bypass pipe 24 and threeway 23；Insulating layer is routine techniques, such as foaming layer；It is not shown
Insulating layer.
The air outlet of upstream centrifugal blower 1 connects the air inlet 6 in dehumidifying heating channel by the threeway 23.
The setting of bypass pipe 24 can control bypass wind air volume by the open degree of air door 25, work as gas flow temperature
When lower, part or all of air-flow is made to be directly over condenser 11 without evaporator 13.Staff can be according to system
Operating condition adjusts 25 open amount of air door.When air door 25 is opened, since fraction is without evaporator 13, thus evaporator
Temperature at 13 can reduce, and the cooling capacity that the side wall in the channel 3 of dehumidifying heating at this time distributes outward can increase naturally.
The setting of insulating layer, it is possible to reduce the outside windage of heat in high temperature gas flow reduces system energy consumption.
The dehumidifying of the first evaporator 14 to N grades of 16 lower sections of evaporator is heated channel 3 and is received to condensed water is had
Catch basin 26, the bottom of condensation water collection sink 26 are connected with downwards condensate draining pipe 27, and condensate draining pipe 27 is equipped with
Drain valve 28.
The setting of condensation water collection sink 26 and drain valve 28 is discharged condensed water convenient for opening drain valve 28, prevents from condensing
Water is cumulative in dehumidifying heating channel 3, while can close drain valve 28 after draining, and prevents the higher air-flow of temperature from passing through row
Water pipe flows into environment, causes energy loss.
The dedusting mechanism includes up big and down small dedusting tank 29, and 29 bottom of dedusting tank is connected with wind stopping device 30；Dedusting into
Air hose 4 is connected on 29 side wall of dedusting tank；29 top of dedusting tank connects the dedusting discharge pipe 5；
Spacing side by side is equipped with several vertically arranged foldable filter elements 31 in the dedusting tank 29 of 4 top of dedusting blast pipe, each to fold filter
Core 31 all has the inner hole 32 of top opening, and the inner hole 32 of each foldable filter element 31 is connected with dedusting discharge pipe 5 respectively.
Dedusting mechanism structure is simple, can effectively be filtered by several foldable filter elements 31 to air-flow.
Dust collecting box 33 is equipped with below the wind stopping device 30.Dust collecting box 33 can prevent dust from polluting ground, and
It spreads apart to pollute environment.
The dedusting mechanism further includes having back-blowing device, and back-blowing device includes air pump 34, the air inlet pipe 35 and atmosphere of air pump
It communicates, the escape pipe 36 of air pump is connected with high-pressure buffering pot 37, and high-pressure buffering pot 37 is connected with several anti-blowpipes 38, anti-blowpipe 38
It is arranged in a one-to-one correspondence with foldable filter element 31 and anti-blowpipe 38 is communicated with the inner hole 32 of foldable filter element 31；It is equipped on each anti-blowpipe 38
For controlling the impulse electromagnetic valve 39 of the on-off of blowback high pressure draught.
The setting of back-blowing device, convenient for dust that 31 side wall of foldable filter element adheres to is more, filtration resistance increases, under filter effect
When drop, high pressure gas is generated using air pump 34, high pressure gas is evenly distributed to each anti-blowpipe 38 using high-pressure buffering pot 37, is beaten
Impulse electromagnetic valve 39 is opened, so that high pressure draught is entered the inner hole 32 of foldable filter element 31 by 38 blowback of anti-blowpipe, keeps foldable filter element 31 swollen
It is swollen and shake, so that the dust on its surface is fallen off, so that foldable filter element 31 be made to restore normal filtering function.
The dedusting mechanism further includes the pressure difference switch 40 having for detecting air filtering core inside and outside differential pressure, and pressure difference switch 40 is set
It sets between 29 top of dedusting tank and dedusting discharge pipe 5.
When pressure difference becomes larger, illustrate that the dust being attached on foldable filter element 31 increases.The pressure difference that pressure difference switch 40 senses
When increasing to setting value, upstream centrifugal blower 1 and downstream centrifugal blower 2 are closed, impulse electromagnetic valve 39 is opened, makes to be stored in high pressure
High pressure gas in surge tank 37 carries out blowback to each foldable filter element 31, removes the dust adhered on foldable filter element 31, restores it
Normal filtering function.
The sum of series of condenser 11 and evaporator 13 in same heat pump system is N+1.I.e.：The grade of first evaporator 14
Number is 1, and the series of N grades of evaporators 16 is N, and the series of first order condenser 18 is 1, and the series of N grades of condensers 20 is N.
In same heat pump system, if evaporator therein 13 is first evaporator 14, condenser 11 therein is N grades of condensations
Device 20.It has the advantage that in this way：The condensation in evaporating pressure and condenser 11 in each group heat pump system, in evaporator 13
The difference of pressure is the most balanced, the power of compressor 10 in such each group heat pump system（Load）It is average.In overall power
Under conditions of certain, the power of multiple compressors 10 is average, and whole energy consumption is lower.Therefore, the condensation in same heat pump system
The sum of series of device 11 and evaporator 13 is N+1, just reduces the energy consumption of heat pump system on the whole.
Its principle is：Those skilled in the art know, for the refrigerant in compression-type refrigerating system, refrigerant
Pressure is higher, and temperature is also higher.
Air（Air-flow）When passing sequentially through first evaporator 14 to N grades of evaporators 16 by upstream toward downstream, air-flow temperature
Degree gradually decreases.Gas flow temperature at first evaporator 14 is with respect to highest at other evaporators 13, in first evaporator 14
Refrigerant pressure（That is evaporating pressure）Also highest.Gas flow temperature at N grades of evaporators 16 is after multi-stage evaporator cools down
Its temperature is minimum, the refrigerant pressure in N grades of evaporators 16（That is evaporating pressure）Also minimum.
Similar reason, when air passes sequentially through first order condenser 18 to N grades of condensers 20 by upstream toward downstream, gas
Stream temperature gradually rises.Gas flow temperature at first order condenser 18 is minimum, the refrigerant pressure in first order condenser 18（I.e.
Condensing pressure）Also minimum.Gas flow temperature at N grades of condensers 20 its temperature highest after the heating of multi-stage condensing device, N grades
Refrigerant pressure in condenser 20（That is condensing pressure）Also highest.
Therefore, first evaporator 14 and N grades of condensers 20 belong to same heat pump system, it will be able to make highest evaporation
Pressure is corresponding with highest condensing pressure；Similarly, N grades of evaporators 16 and first order condenser 18 belong to same heat pump system
System, it will be able to keep minimum evaporating pressure corresponding with minimum condensing pressure.Similarly, N-1 grades of evaporators and the second level are cold
Condenser 19 belongs to same heat pump system, it will be able to keep secondary low evaporating pressure corresponding with secondary low condensing pressure.In this way, just protecting
The inlet and outlet of multiple compressors 10 are demonstrate,proved（10 import of compressor connects evaporator 13, inlet pressure reactive evaporation pressure；Compressor
10 outlet connection condensers 11, outlet pressure is condensing pressure）Refrigerant pressure difference it is average, reduce heat on the whole
The energy consumption of pumping system.
In use, the damp and hot dust-contained airflow in drying equipment（Dustiness is larger）Enter dedusting tank by dedusting blast pipe 4
29, and upwardly through the side wall of each foldable filter element 31 into the inner hole 32 of each foldable filter element 31, and then enter dedusting discharge pipe 5.
Air-flow is filtered when through foldable filter element 31, and part dust, which is fallen to, to be closed at air-valve, and part dust is attached to foldable filter element
On 31.Air-flow in dedusting discharge pipe 5 enters threeway 23 under the action of upstream centrifugal blower 1.It is big absolutely when 25 standard-sized sheet of air door
Fraction does not pass through condensers at different levels directly by evaporators at different levels.When air door 25 is half-open, fraction passes through evaporation
13 fraction of device is directly over condensers at different levels.When air door 25 is closed, whole air-flows pass through evaporators at different levels.
Heat is constantly absorbed when air-flow passes through the evaporator section 21 and evaporator at different levels of separate type heat pipe exchanger.Separate type
The condensation segment 22 of heat exchange of heat pipe directly discharges heat at first order condenser 18.Air-flow temperature after evaporators at different levels
Become lower, in water evaporation coagulate, condensate water collecting passes through 28 row of drain valve in condensation water collection sink 26
Out.It needs to close drain valve 28 after draining, prevents air-flow from flowing away from drain valve 28.
Air-flow, by mist water separator 17, is further isolated the moisture content that air-flow carries after evaporators excessively at different levels
Come, so that it is less by the air-flow water content after evaporators at different levels, it is more advantageous to next step dried material.
After air-flow passes through mist water separator 17, condensation segment 22 and condenser at different levels through separate type heat pipe exchanger constantly add
Heat heating, to become dry high temperature gas flow.In downstream under the action of centrifugal blower 2, high temperature drying air-flow is admitted to again
Drying equipment dries the material in drying equipment.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that：Still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (8)
1. dehumidification type recuperation of heat closed circulation heat pump drying system under high dirt environment, it is characterised in that：Including dedusting mechanism, upstream
Centrifugal blower, downstream centrifugal blower, dehumidifying heating channel and N group heat pump system, N are positive integer；
Using the flow direction of wind as downstream direction；
Dedusting mechanism has the dedusting blast pipe of the air outlet for connecting drying equipment and the air inlet of connection upstream centrifugal blower
The dedusting discharge pipe of mouth；
The air inlet in the air outlet connection dehumidifying heating channel of upstream centrifugal blower, the air outlet in dehumidifying heating channel connect downstream
The air inlet of centrifugal blower, the air outlet of downstream centrifugal blower are used to connect the air inlet of drying equipment；
Every group of heat pump system includes the compressor being connected by circulation by refrigerant line, condenser, expansion valve and evaporator；Often
The compressor and expansion valve of group heat pump system are set to outside dehumidifying heating channel, the evaporator and condenser of every group of heat pump system
It is set to the inside in dehumidifying heating channel；
Dehumidifying heating channel in vertically roam all around the would to be successively arranged first evaporator to N grades of evaporators, mist water separator with
And first order condenser is to N grades of condensers；The sum of series of condenser and evaporator in same heat pump system is N+1.
2. dehumidification type recuperation of heat closed circulation heat pump drying system, feature exist under high dirt environment according to claim 1
In：It further include having the separate type heat pipe exchanger being arranged in dehumidifying heating channel, separate type heat pipe exchanger has evaporator section
And condensation segment, evaporator section and condensation segment are linked together by medium pipeline；The evaporator section setting of separate type heat pipe exchanger exists
In the dehumidifying heating channel of first evaporator upstream side, the condensation segment of separate type heat pipe exchanger is arranged in first order condenser
In dehumidifying heating channel between mist water separator.
3. dehumidification type recuperation of heat closed circulation heat pump drying system, feature exist under high dirt environment according to claim 1
In：It further include having threeway, an interface of threeway is separately connected the upstream end in dehumidifying heating channel, another interface of threeway connects
The air outlet of trip centrifugal blower is connected, the third interface of threeway is connected with bypass pipe, and the other end of bypass pipe is connected to fog
On dehumidifying heating channel between separator and first order condenser, bypass pipe is equipped with air door；Outside the bypass pipe and threeway
It is equipped with insulating layer；
The air outlet of upstream centrifugal blower connects the air inlet in dehumidifying heating channel by the threeway.
4. dehumidification type recuperation of heat closed circulation heat pump drying system, feature exist under high dirt environment according to claim 1
In：Dehumidifying below the first evaporator to N grades of evaporators heats channel to condensation water collection sink is had, and condenses
The bottom that water collects sink is connected with downwards condensate draining pipe, and condensate draining pipe is equipped with drain valve.
5. dehumidification type recuperation of heat closed circulation heat pump drying system under high dirt environment according to any one of claim 1 to 4
System, it is characterised in that：
The dedusting mechanism includes up big and down small dedusting tank, and dedusting pot bottom is connected with wind stopping device；Dedusting blast pipe is connected to
On the dedusting pot sidewall；Dedusting upper end connects the dedusting discharge pipe；
Spacing side by side is equipped with several vertically arranged foldable filter elements in dedusting tank above dedusting blast pipe, and each foldable filter element has
There is the inner hole of top opening, the inner hole of each foldable filter element is connected with dedusting discharge pipe respectively.
6. dehumidification type recuperation of heat closed circulation heat pump drying system, feature exist under high dirt environment according to claim 5
In：Dust collecting box is equipped with below the wind stopping device.
7. dehumidification type recuperation of heat closed circulation heat pump drying system, feature exist under high dirt environment according to claim 5
In：The dedusting mechanism further includes having back-blowing device, and back-blowing device includes air pump, and the air inlet pipe of air pump is communicated with atmosphere, air pump
Escape pipe be connected with high-pressure buffering pot, high-pressure buffering pot is connected with several anti-blowpipes, and anti-blowpipe and foldable filter element correspond
It is arranged and anti-blowpipe is communicated with the inner hole of foldable filter element；The on-off for controlling blowback high pressure draught is equipped on each anti-blowpipe
Impulse electromagnetic valve.
8. dehumidification type recuperation of heat closed circulation heat pump drying system, feature exist under high dirt environment according to claim 7
In：The dedusting mechanism further includes the pressure difference switch having for detecting air filtering core inside and outside differential pressure, and pressure difference switch is arranged in dedusting
Between tank top and dedusting discharge pipe.
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| CN109198703A (en) * | 2018-11-07 | 2019-01-15 | 广州金鹏环保工程有限公司 | Environmental protection and energy saving zero waste gas emission expanded pellet diet production line and production method |
| CN111811242A (en) * | 2020-07-31 | 2020-10-23 | 广东纽恩泰新能源科技发展有限公司 | Heat recovery closed circulation rice drying system and method |
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| CN115560557A (en) * | 2022-10-08 | 2023-01-03 | 江苏博一环保科技有限公司 | Hot air drying system |
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| CN108917376B (en) | 2024-03-15 |
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