CN208075482U - A kind of Air Dried System - Google Patents
A kind of Air Dried System Download PDFInfo
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- CN208075482U CN208075482U CN201820524961.6U CN201820524961U CN208075482U CN 208075482 U CN208075482 U CN 208075482U CN 201820524961 U CN201820524961 U CN 201820524961U CN 208075482 U CN208075482 U CN 208075482U
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Abstract
The utility model discloses a kind of Air Dried System, it includes milk tank, water tank, vacuum hydroextractor, gas water separation tank, feed unit, airstream drying tower, vapour source, fresh air sources, heat exchanger, cyclone collector, exhaust blower, PLC controller, dewaterer material stock slot liquid level gauge in vacuum hydroextractor, jet chimney pressure sensor on airstream drying tower admission line, jet chimney pressure sensor at the steam inlet of heat exchanger, airstream drying tower inlet air temperature sensor on airstream drying tower admission line, tiny structure sensor in airstream drying tower and the temperature of outgoing air sensor on airstream drying tower outlet conduit.It realizes that pneumatic conveying drying moisture controls using the utility model Air Dried System, achievees the purpose that stablize, accurately controls temperature of outgoing air, and then being capable of stability contorting product water content.
Description
Technical field：
The utility model is related to a kind of drying system more particularly to a kind of Air Dried Systems.
Background technology：
Pneumatic conveying drying be chiefly used in as：The various starch such as potato, cassava, corn are dry and other are by emulsion form to powdery
Drying process.Great number of issues can be brought since moisture is unstable in starch product to enterprise：Product moisture content is high, is more than
On the one hand moisture standard can cause airstream drying tower putty to stop production, on the other hand, product easily lumps, is not easy to store, cannot
Meet customer requirement, or even imposed a fine by relevant departments, influences brand image.Product moisture content is low, not only influences product light
Damp degree can also seriously affect factory's yield and benefit, for producing 10000 tons of potato starch factory every year：It is conservative to estimate
It calculates, relatively low 1 percentage point of product moisture, 6500 yuan/ton of market price, then 1 year direct losses of factory are 650,000 yuan.
How the control of product moisture stable content to be formulated in country within critical field, and can stablize and tend to national standard limit
Within the scope of commanding elevation, while ensureing product quality so that enterprise profit maximizes, and is current urgent problem to be solved.
Utility model content：
The purpose of this utility model is to provide a kind of Air Dried Systems simple in structure, flexible adjustment.
The utility model is implemented by following technical solution：
A kind of Air Dried System comprising milk tank, water tank, vacuum hydroextractor, gas water separation tank, feed unit, gas
Flow that drying tower, vapour source, fresh air sources, heat exchanger, cyclone collector, exhaust blower, PLC controller, to be set to the vacuum de-
Dewaterer material stock slot liquid level gauge in water dispenser, the jet chimney pressure sensor at the steam inlet of the heat exchanger,
Airstream drying tower inlet air temperature sensor on the airstream drying tower admission line, in the airstream drying tower
Tiny structure sensor and the temperature of outgoing air sensor on the airstream drying tower outlet conduit；
The outlet of the milk tank is connect with the lotion import of the vacuum hydroextractor, connect the milk tank with it is described
The pipeline of vacuum hydroextractor is equipped with emulsion pumps, the air water outlet of the vacuum hydroextractor and the air water of the gas water separation tank into
The wet starch discharge port of mouth connection, the vacuum hydroextractor passes through the feed unit and the feed inlet of the airstream drying tower connects
It connects, the vapour source is connect with the steam inlet of the heat exchanger, the air intlet of the fresh air sources and the heat exchanger
Connection, the hot air outlet of the heat exchanger connect with the airstream drying tower air inlet, the outlet of the airstream drying tower and
The import of the cyclone collector connects, and the exhaust outlet of the cyclone collector is connect with the exhaust blower；
The water outlet of the water tank is connect with the moisturizing import of the vacuum hydroextractor；
It is equipped with inlet regulating valve on connecting pipeline of the water tank with the vacuum hydroextractor, is connecting the vapour source
It is equipped with steam control valve with the pipeline of the heat exchanger, is set on connecting pipeline of the milk tank with the vacuum hydroextractor
There is charging regulating valve；
The dewaterer material stock slot liquid level gauge, the jet chimney pressure sensor, the airstream drying tower inlet air temperature
Sensor, the tiny structure sensor and the temperature of outgoing air sensor are connect with the input terminal of the PLC controller；
The output end of the PLC controller and the inlet regulating valve, the steam control valve, the charging regulating valve,
The rotary drum motor of the exhaust blower and the vacuum hydroextractor connects.
Further, further include cooling tower, finished product packing machine and the cooling tower pressure interior force in the cooling tower
Sensor, the discharge port of the cyclone collector are connect with the feed inlet of the cooling tower, the discharge port of the cooling tower and institute
State the feed inlet connection of finished product packing machine；The cooling tower pressure sensor is connect with the input terminal of the PLC controller, institute
The cooling blower for stating cooling tower is connect with the output end of the PLC controller.
Further, the feed unit is high-speed screw feeder or loudspeaker.
Further, further include stirring motor, the motor shaft of the stirring motor by agitating shaft and is set to the breast
Stirring blade in flow container is connected.
The advantages of the utility model：
It realizes that pneumatic conveying drying moisture controls using the utility model Air Dried System, reaches stable, accurate air draft temperature
Spend control effect, can stability contorting product water content, realize by product moisture stable content control in national formulation standard
Within the scope of, and can stablize and tend within the scope of national standard limitation high point, while ensureing product quality so that enterprise profit is most
Bigization；Stability contorting product moisture content is realized using Tthe utility model system, greatly reduces production cost, stability contorting production
Product water content avoids energy waste；Promotion and stabilized product quality, it is competing to promote factory's brand influence and the country, internationalization
Strive power.
Description of the drawings：
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the system structure diagram of the utility model；
Fig. 2 is the connection block diagram of embodiment 1；
Fig. 3 is the control principle block diagram of embodiment 2.
In figure：Milk tank 1, water tank 2, vacuum hydroextractor 3, gas water separation tank 4, feed unit 5, airstream drying tower 6, steam
Source 7, fresh air sources 8, heat exchanger 9, cyclone collector 10, exhaust blower 11, PLC controller 12, dewaterer material stock slot liquid level gauge
13, jet chimney pressure sensor 14, tiny structure sensor 15, temperature of outgoing air sensor 16, emulsion pumps 17, inlet regulating valve
18, steam control valve 19, charging regulating valve 20, cooling tower 21, finished product packing machine 22, cooling tower pressure sensor 23, cooling
Wind turbine 24, rotary drum motor 25, stirring motor 26, airstream drying tower inlet air temperature sensor 27.
Specific implementation mode：
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1：
A kind of Air Dried System as shown in Figure 1 and Figure 2 comprising milk tank 1, water tank 2, vacuum hydroextractor 3, air water
Knockout drum 4, feed unit 5, airstream drying tower 6, vapour source 7, fresh air sources 8, heat exchanger 9, cyclone collector 10, exhaust blower
11, PLC controller 12, the dewaterer material stock slot liquid level gauge 13 in vacuum hydroextractor 3, set on heat exchanger 9 steam into vapour
Jet chimney pressure sensor 14 at mouthful, the sensing of the airstream drying tower inlet air temperature on 6 admission line of airstream drying tower
Device 27, the tiny structure sensor 15 in airstream drying tower 6 and the temperature of outgoing air on 6 outlet conduit of airstream drying tower
Sensor 16；
The outlet of milk tank 1 is connect with the lotion import of vacuum hydroextractor 3, in connection milk tank 1 and vacuum hydroextractor 3
Pipeline is equipped with emulsion pumps 17, and the air water outlet of vacuum hydroextractor 3 is connect with the air water import of gas water separation tank 4, vacuum dehydration
The wet starch discharge port of machine 3 is connect by feed unit 5 with the feed inlet of airstream drying tower 6, the steaming of vapour source 7 and heat exchanger 9
Vapor inlet connects, and fresh air sources 8 are connect with the air intlet of heat exchanger 9, the hot air outlet and airstream drying tower of heat exchanger 9
6 air inlets connect, and the outlet of airstream drying tower 6 connect with the import of cyclone collector 10, the exhaust outlet of cyclone collector 10 and
Exhaust blower 11 connects；
The water outlet of water tank 2 is connect with the moisturizing import of vacuum hydroextractor 3；
It is equipped with inlet regulating valve 18 on pipeline of the connection water tank 2 with vacuum hydroextractor 3, in connection vapour source 7 and heat exchange
The pipeline of device 9 is equipped with steam control valve 19, and charging regulating valve is equipped on pipeline of the connection milk tank 1 with vacuum hydroextractor 3
20；
Dewaterer material stock slot liquid level gauge 13, jet chimney pressure sensor 14, airstream drying tower inlet air temperature sensor 27,
Tiny structure sensor 15 and temperature of outgoing air sensor 16 are connect with the input terminal of PLC controller 12；
The output end of PLC controller 12 and inlet regulating valve 18, steam control valve 19, charging regulating valve 20, exhaust blower 11
And the rotary drum motor 25 of vacuum hydroextractor 3 connects.
It further includes cooling tower 21, finished product packing machine 22 and the cooling tower pressure sensor in cooling tower 21
23, the discharge port of cyclone collector 10 is connect with the feed inlet of cooling tower 21, discharge port and the finished product packing machine 22 of cooling tower 21
Feed inlet connection；Cooling tower pressure sensor 23 is connect with the input terminal of PLC controller 12, the cooling blower of cooling tower 21
24 connect with the output end of PLC controller 12.
Feed unit 5 is high-speed screw feeder or loudspeaker.
It further includes stirring motor 26, and the motor shaft of stirring motor 26 passes through agitating shaft and the stirring in milk tank 1
Blade is connected.
Embodiment 2：
As shown in figure 3, using 1 system of embodiment, stability contorting product moisture content method, PLC controller 12 are realized
For a whole set of kernel control module, effect is to acquire and control.Central control computer includes 1 industrial personal computer, 1-2 platform displays, behaviour
Make system, configuration software and man-machine interface；All devices operating status is shown, warning message is shown, control loop parameter, is corrected
Compensating parameter, realtime curve, the inquiry of historical data etc. need the part of human-computer interaction, session, are completed by central control computer.
Central control computer is the prior art, no longer excessively tired herein to state.
PLC controller 12 includes dewaterer liquid level PID control module, airstream drying tower inlet air temperature control module, first
Airstream drying tower inlet air temperature compensating module, the second airstream drying tower inlet air temperature compensating module, negative pressure PID in airstream drying tower
Negative pressure pid control module, airstream drying tower temperature of outgoing air pid control module, rotary drum motor frequency control in control module, cooling tower
Molding block and airstream drying tower temperature of outgoing air compensating module；It is entered the wind by dewaterer liquid level PID control module, airstream drying tower
Negative pressure pid control module is realized to dewaterer in negative pressure pid control module and cooling tower in temperature control modules, airstream drying tower
Liquid level, airstream drying tower inlet air temperature, in airstream drying tower in negative pressure and cooling tower negative pressure independent stability contorting, then pass through
Inlet amount is established PID control with airstream drying tower temperature of outgoing air and is associated with by airstream drying tower temperature of outgoing air pid control module, reaches
Stable, accurate airstream drying tower temperature of outgoing air control effect realizes the stability contorting of product water content.
Wherein, realize that the specific method of dewaterer level stability is by dewaterer liquid level PID control module：Dewaterer is deposited
The real-time dewaterer material stock tank liquor place value that hopper liquid level gauge 13 detects is compared with dewaterer material stock tank liquor position setting value, when
When real-time dewaterer material stock tank liquor place value is less than dewaterer material stock tank liquor position setting value, increases by 18 aperture of inlet regulating valve, increase
Inflow, until dewaterer material stock slot constant liquid level；When real-time dewaterer material stock tank liquor place value is higher than dewaterer material stock tank liquor position
When setting value, reduce 18 aperture of inlet regulating valve, reduces inflow, until constant liquid level.
When dewaterer material stock tank liquor place value is higher than X2 or less than Y2, system delay automatic alarm.X2 and Y2 journeys in order to control
The value that can be set in sequence is used for the bound alarm threshold of flexible configuration dewaterer material stock tank liquor position.Control dewaterer material stock slot
Constant liquid level can guarantee that vacuum drum is stained with material constant area.
The specific controlling party that airstream drying tower inlet air temperature is stablized is realized by airstream drying tower inlet air temperature control module
Method includes：
(1) using the multigroup airstream drying tower inlet air temperature detected and steam inlet pipeline pressure value, it is dry to establish air-flow
Functional relation A=f (a) between dry tower inlet air temperature and steam inlet pipeline pressure value, and pass through the functional relation meter
Calculation obtains the steam steam inlet pipe road pressure set points to match with airstream drying tower inlet air temperature setting value；
(2) the real-time steam steam inlet pipe road pressure value that jet chimney pressure sensor 14 detects and steam steam inlet pipe road pressure
Power setting value is compared, and when real-time steam steam inlet pipe road pressure value is less than steam steam inlet pipe road pressure set points, is increased and is steamed
19 aperture of steam control valve increases steam throttle flow, until pressure is constant in steam steam inlet pipe road pressure set points, and then realize into
Air temperature is constant in inlet air temperature setting value；When real-time steam steam inlet pipe road pressure value is higher than steam steam inlet pipe road pressure set points
When, reduce 19 aperture of steam control valve, reduces steam throttle flow, until pressure is constant in steam steam inlet pipe road pressure set points,
And then realize that inlet air temperature is constant in inlet air temperature setting value.
Temperature and pressure-regulating valve, three's serials control method, advantage are：9 Wen Sheng of heat exchanger, temperature drop reaction are slower,
Temperature inertness is larger, rely only on steam control valve 19 control temperature be susceptible to control it is slow or control overshoot；And utilize pressure
As intermediate conduction parameter, ensure that steam pressure is stablized, and then controls temperature, can further improve temperature control effect first.
When airstream drying tower inlet air temperature is higher than X3 or less than Y3, be delayed automatic alarm.X3 and Y3 is in order to control in program
The value that can be set is used for the bound alarm threshold of 6 hot-air of flexible configuration inlet air flow drying tower.Pid control computation in system
Final airstream drying tower inlet air temperature setting value be：The+the first inlet air temperature of PID arithmetic setting value offset+the second is into wind-warm syndrome
Spend offset.
When steam control valve 19 open it is big to X4% or when turning down Y4%, as being still unable to if control pressure is stablized delay automatically
Alarm.The value that X4 and Y4 can be set in program in order to control is carried for the abnormal open range alarm of flexible configuration steam control valve 19
It wakes up and whether automatic identification boiler room gas supply is normal.When 19 aperture of steam control valve be more than normal range (NR), be identified as boiler room confession
Steam pressure is relatively low, and system stabilization may be influenced by continuing this trend；When 19 aperture of steam control valve be less than normal range (NR), be identified as
Boiler room pressure of steam supply is higher, belongs to energy waste.
It is realized by the first airstream drying tower inlet air temperature compensating module and airstream drying tower inlet air temperature setting value is carried out
Compensating the specific control method being superimposed is：
(1) material under material moisture minimum value G1 and vacuum hydroextractor scraper under default vacuum hydroextractor scraper
Moisture maximum value G2；
(2) in the propagation process of G1 to G2, gas water separation tank negative pressure value is established with material water under vacuum hydroextractor scraper
The functional relation P=P (G) for dividing changes of contents substitutes into the gas water separation tank negative pressure value detected in functional relation P=P (G),
System-computed obtains material moisture under vacuum hydroextractor scraper；
(3) material moisture and the first inlet air temperature offset under the multi-group vacuum dewaterer scraper detected are utilized,
The functional relation Q=Q (G) between material moisture under the first inlet air temperature offset and vacuum hydroextractor scraper is established,
In system operation, material moisture substitutes into functional relation Q=Q under the vacuum hydroextractor scraper that system-computed is obtained
(G) in, system-computed obtains the first inlet air temperature offset；
(4) the first inlet air temperature offset is compensated with airstream drying tower inlet air temperature setting value and is superimposed by system, is led to
Automatic lifting inlet air temperature is crossed, the variation of material moisture under Equilibrium vacuum dewaterer scraper is carried out.
3 performance of vacuum hydroextractor difference, filter cloth pore size selection difference, each regions and the primary product of different manufacturers
Kind powdered granule it is of different sizes, therefore, causing the continuous high-efficient operating time of vacuum hydroextractor 3, different (dewatering can be with
Time increases and constantly reduces).This can be determined in actual production process according to material moisture under vacuum hydroextractor scraper
Time span between usual value 36%-42%, i.e., only allows the moisture of material under vacuum hydroextractor scraper in 36%-
Between 42%.Starting point 36% depends mainly on dewaterer performance, and more than 42% after dewaterer can then be cleaned.It is dehydrated
Material moisture is average rate growth increase with time ≈ 42 from G1 ≈ 36 to G2 under machine scraper.(G1 and G2 are in order to control
The parameter that program is configured in debugging interruption according to above-mentioned condition) in the propagation process of G1 to G2, gas water separation tank negative pressure value
Understand linear change therewith, control program, which is automatically established the growth of G1 to G2 with gas water separation tank negative pressure value, to be associated with, to make control
System processed enters the current of 6 material of airstream drying tower by acquiring gas water separation tank negative pressure value and can be obtained by vacuum hydroextractor 3
Moisture G, and the first inlet air temperature offset is generated automatically according to G, the first inlet air temperature offset and airstream drying tower into
Air temperature setting value compensates superposition, by automatic lifting inlet air temperature, balances the change of dewaterer scraper blanking moisture
Change.
When each cleaning of vacuum hydroextractor 3 finishes blanking again, airstream drying tower 6 can have higher temperature, be easy
Airstream drying tower 6 starts to produce a part when charging compared with dryed product.To avoid and improving this problem, system is controlled as follows
System：
1. delayed startup loudspeaker or feeding serew after 3 blanking of vacuum hydroextractor；
2. loudspeaker or feeding serew are to be higher than normal speed startup；
3. loudspeaker or feeding serew rotating speed are according to storing amount, linear reduction is until bin-level collection value from high to low
Equal to setting value.
Principle：Starting enters airstream drying tower 6 with more wet stock, reduces rapidly 6 temperature of airstream drying tower to normal value
Range.
It is realized by the second airstream drying tower inlet air temperature compensating module and airstream drying tower temperature of outgoing air setting value is carried out
Compensating the specific control method being superimposed is：
(1) using the multigroup air themperature detected and the second airstream drying tower inlet air temperature offset, the second gas is established
Flow the functional relation Y=Y (X) between drying tower inlet air temperature offset and air themperature, the Air Temperature that system will detect
Degree substitutes into functional relation Y=Y (X), and the second airstream drying tower inlet air temperature offset is calculated；
(2) system mends the second airstream drying tower inlet air temperature offset and airstream drying tower temperature of outgoing air setting value
Superposition is repaid, by automatic lifting or airstream drying tower temperature of outgoing air is reduced, carrys out shadow of the equilibrium air temperature to product moisture content
It rings.
In Optimization of Gas Flow Drying, outside air temperature is a non-negligible variable.One it is medium-scale (30-35 tons/
Hour) Starch Production line, intake hourly is even more in ten thousand cubes of 10-12.It is different when heating these air
Temperature radix has very big difference (into the fresh air temperature of heat exchanger 9) to the demand of steam.Seasonal Temperature Difference, day and night temperature,
The morning and evening temperature difference is all an important factor for influencing dry moisture control.In all keys such as System steam valve, wet starch inlet amounies
Point keep constant it is constant in the case of, due to air temperature variations will cause it is dry after starch moisture content change.
By increasing the second airstream drying tower inlet air temperature compensating module, real-time uninterrupted sampling outside air temperature, warp
Functional relation Y=Y (X) operation between the second airstream drying tower inlet air temperature offset and air themperature is crossed, automatic compensation control
Difference processed excludes the starch water partial wave caused by outside air temperature changes and moves, further strengthens and optimize product starch moisture
The stability and consistency of content.
The specific controlling party that tiny structure is stablized in airstream drying tower is realized by negative pressure pid control module in airstream drying tower
Method includes：The real-time tiny structure value that tiny structure sensor 15 detects is compared with tiny structure setting value, when real-time tiny structure
When value is more than tiny structure setting value, exhaust blower rotating speed is improved, increases exhaust air rate, tiny structure value in airstream drying tower is made to reduce, from
And it is constant in tiny structure setting value；When real-time tiny structure value is less than tiny structure setting value, exhaust blower rotating speed is reduced, reduces air draft
Amount, makes pressure rise in airstream drying tower 6, to constant in tiny structure setting value.
Tiny structure in tower is set to stablize by variable frequency adjustment exhaust blower rotating speed, i.e., wind speed is stablized in tower.Effect is to control quilt
Material drying has unified stable evaporation time in tower.The tiny structure value of tower pressure interior force sensor acquisition is negative, therefore,
Not enough：Tiny structure value reading is represented to be greater than the set value；It is more than：It represents tiny structure value reading and is less than setting value.Work as airstream drying tower
Interior tiny structure is less than X5 or when more than Y5, and be delayed automatic alarm, the value that X5 and Y5 can be set in program in order to control, for flexibly taking
Bound alarm threshold with tiny structure in tower.
Realize that the specific control method that tiny structure is stablized in cooling tower includes by negative pressure pid control module in cooling tower：
Real-time pressure value is compared with cooling tower pressure interior force setting value in the cooling tower that cooling tower pressure sensor 23 detects, when
When real-time pressure value is more than cooling tower pressure interior force setting value in cooling tower, cooling blower rotating speed is improved, exhaust air rate is increased, makes cooling
Pressure reduction in tower 21, to constant in cooling tower pressure interior force setting value；When real-time pressure value is less than in cooling tower in cooling tower
When pressure set points, cooling blower rotating speed is reduced, reduces exhaust air rate, makes pressure rise in cooling tower 21, to constant micro- negative
Press setting value.
The specific control that airstream drying tower temperature of outgoing air is stablized is realized by airstream drying tower temperature of outgoing air pid control module
Method includes：The real-time temperature of outgoing air of airstream drying tower and airstream drying tower that airstream drying tower temperature of outgoing air sensor 16 detects
Temperature of outgoing air setting value is compared, when the real-time temperature of outgoing air of airstream drying tower is more than airstream drying tower temperature of outgoing air setting value
When, increase charging 20 aperture of regulating valve, increase inlet amount, make the reduction of airstream drying tower temperature of outgoing air, to constant dry in air-flow
Dry tower temperature of outgoing air setting value；When the real-time temperature of outgoing air of airstream drying tower is less than airstream drying tower temperature of outgoing air setting value, subtract
20 aperture of regulating valve is fed less, reduces inlet amount, airstream drying tower temperature of outgoing air is made to increase, and is arranged in airstream drying tower to constant
Air temperature setting value.When the real-time temperature of outgoing air of airstream drying tower is more than X1 or is less than Y1, system automatic alarm, and be automatically stopped
Steam is fed and is automatically stopped to airstream drying tower；The X1 and Y1 parameters that program can configure in order to control, if transfiniting expression system
System operation exception or sensor abnormality.
Realize that the specific control method that rotary drum motor frequency stabilization is adjusted includes by rotary drum motor frequency control module：Profit
With multigroup 20 aperture of charging regulating valve detected and rotary drum motor frequency, charging 20 aperture of regulating valve and rotary drum motor frequency are established
Functional relation B=g (b) between rate, after feeding 20 aperture regulation of regulating valve, system is utilized by feeding 20 aperture of regulating valve
Rotary drum motor frequency is calculated in functional relation B=g (b), and then rotary drum motor frequency is adjusted.
Airstream drying tower temperature of outgoing air setting value is compensated by the realization of airstream drying tower temperature of outgoing air compensating module
Superposition specific control method be：
(1) using the multigroup air humidity detected and airstream drying tower temperature of outgoing air offset, airstream drying tower is established
The air humidity detected is substituted into letter by the functional relation W=W (X) between temperature of outgoing air offset and air humidity, system
In number relationship W=W (X), airstream drying tower temperature of outgoing air offset is calculated；
(2) system compensates airstream drying tower temperature of outgoing air offset with airstream drying tower temperature of outgoing air setting value folded
Add, by automatic lifting or reduces airstream drying tower temperature of outgoing air, carry out influence of the equilibrium air humidity to product moisture content.
Air humidity increases, and under same airstream drying tower temperature of outgoing air, product moisture content can increase；Air humidity
It reduces, under same airstream drying tower temperature of outgoing air, product moisture content can increase.Therefore, control system is in stability contorting
In the case of airstream drying tower temperature of outgoing air, fresh air humidity can be acquired in real time, matched automatically in conjunction with fresh air humidity
Side's control is corrected as follows：It is automatic to correct 6 temperature of outgoing air controlling value of airstream drying tower upwards when fresh air humidity increases；When
When fresh air humidity reduces, 6 temperature of outgoing air controlling value of automatic downward revision airstream drying tower, to obtain more stable product
Moisture.
After system, which receives production line leading portion, stops expecting signal, auto linear reduces since being alarmed 1 liquid level lower limit of milk tank
Airstream drying tower inlet air temperature setting value reduces steam consumption；Steaming is automatically closed since being alarmed dewaterer hopper liquid level lower limit
Vapour is completed surplus material using 9 waste heat of heat exchanger and is dried；End dry powder amount after fracture can be reduced to greatest extent in this way and to the greatest extent may be used
Steam consumption can be saved.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of Air Dried System, which is characterized in that it includes milk tank, water tank vacuum hydroextractor, gas water separation tank, charging
Unit, airstream drying tower, vapour source, fresh air sources, heat exchanger, cyclone collector, exhaust blower, PLC controller, be set to it is described
Dewaterer material stock slot liquid level gauge in vacuum hydroextractor, the jet chimney pressure at the steam inlet of the heat exchanger pass
Sensor, is set to the pneumatic conveying drying at the airstream drying tower inlet air temperature sensor on the airstream drying tower admission line
Tiny structure sensor in tower and the temperature of outgoing air sensor on the airstream drying tower outlet conduit；
The outlet of the milk tank is connect with the lotion import of the vacuum hydroextractor, is connecting the milk tank and the vacuum
The pipeline of dewaterer is equipped with emulsion pumps, and the air water outlet and the air water import of the gas water separation tank of the vacuum hydroextractor connect
It connecing, the wet starch discharge port of the vacuum hydroextractor is connect by the feed unit with the feed inlet of the airstream drying tower,
The vapour source is connect with the steam inlet of the heat exchanger, and the fresh air sources and the air intlet of the heat exchanger connect
It connects, the hot air outlet of the heat exchanger is connect with the airstream drying tower air inlet, the outlet of the airstream drying tower and institute
The import connection of cyclone collector is stated, the exhaust outlet of the cyclone collector is connect with the exhaust blower；
The water outlet of the water tank is connect with the moisturizing import of the vacuum hydroextractor；
It is equipped with inlet regulating valve on connecting pipeline of the water tank with the vacuum hydroextractor, is connecting the vapour source and institute
The pipeline for stating heat exchanger is equipped with steam control valve, be equipped on connecting the pipeline of the milk tank with the vacuum hydroextractor into
Expect regulating valve；
The dewaterer material stock slot liquid level gauge, the jet chimney pressure sensor, airstream drying tower inlet air temperature sensing
Device, the tiny structure sensor and the temperature of outgoing air sensor are connect with the input terminal of the PLC controller；
It is the output end of the PLC controller and the inlet regulating valve, the steam control valve, the charging regulating valve, described
The rotary drum motor of exhaust blower and the vacuum hydroextractor connects.
2. a kind of Air Dried System according to claim 1, which is characterized in that it further includes cooling tower, finished product packing
Machine and the cooling tower pressure sensor in the cooling tower, the discharge port of the cyclone collector and the cooling tower
Feed inlet connection, the discharge port of the cooling tower connect with the feed inlet of the finished product packing machine；The cooling tower pressure interior force
Sensor is connect with the input terminal of the PLC controller, the output end of the cooling blower of the cooling tower and the PLC controller
Connection.
3. a kind of Air Dried System according to claim 1, which is characterized in that the feed unit is fed for high-speed screw
Material machine or loudspeaker.
4. a kind of Air Dried System according to claim 1, which is characterized in that it further includes stirring motor, described to stir
The motor shaft for mixing motor is connected by agitating shaft with the stirring blade in the milk tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524961.6U CN208075482U (en) | 2018-04-13 | 2018-04-13 | A kind of Air Dried System |
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| CN201820524961.6U CN208075482U (en) | 2018-04-13 | 2018-04-13 | A kind of Air Dried System |
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| CN208075482U true CN208075482U (en) | 2018-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111097183A (en) * | 2020-01-14 | 2020-05-05 | 江苏中有信科技有限公司 | Pharmacy enrichment facility |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097183A (en) * | 2020-01-14 | 2020-05-05 | 江苏中有信科技有限公司 | Pharmacy enrichment facility |
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