CN109028881A - A kind of dryer and its Differential pressure control method - Google Patents
A kind of dryer and its Differential pressure control method Download PDFInfo
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- CN109028881A CN109028881A CN201810820455.6A CN201810820455A CN109028881A CN 109028881 A CN109028881 A CN 109028881A CN 201810820455 A CN201810820455 A CN 201810820455A CN 109028881 A CN109028881 A CN 109028881A
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- air
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- preheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of dryer and its Differential pressure control methods, dryer includes the preheating section cabinet set gradually, high temperature section cabinet and cooling section cabinet, preheating section cabinet, preliminary heating zone flow fan is successively arranged in high temperature section cabinet and cooling section cabinet, heat zone flow fan and cooling layer flow fan, dryer further includes preheating air-exhausting duct, cooling, air discharging pipe, total air-exhausting duct and total exhaust blower, preheat air-exhausting duct, the first end of cooling, air discharging pipe is connected to preheating section cabinet and cooling section cabinet respectively, preheat air-exhausting duct, the second end of cooling, air discharging pipe is connected to total air-exhausting duct, preheat air-exhausting duct, the first volume control damper is respectively equipped on cooling, air discharging pipe, second volume control damper, total exhaust blower is installed on total air-exhausting duct, convenient for adjusting pressure difference, it is stable, low energy consumption.Dryer Differential pressure control method of the present invention is reliable and stable, accurate and effective.
Description
The present invention relates to food, pharmaceutical production field more particularly to a kind of dryer and its Differential pressure control methods.
Background technique
Three preheating section, high temperature section and cooling section functional sections are disposed with inside tunnel sterilizing dryer, in order to true
Protecting tunnel sterilizing and drying machine three, functional section can Each performs its own functions, and certain pressure difference, ordinary circumstance are maintained between usually needing each section
Down it is 1-2pa, in the prior art, passes through after the slag hull assembly of preheating section air draft and the shared drying motor spindle of cooling section air draft
The discharge of one exhaust blower, due to being not provided with control component in the exhaust blower front end, if imbalance of pressure will will appear it is as follows
Situation: when preheating section pressure is lower than high temperature section 1-2pa, the hot wind of high temperature section is circulated into preheating section, leads to preheating section temperature liter
Height, may will affect performance and the service life of preheating section high efficiency particulate air filter, the pressure reduction after hot wind of high temperature section flow to preheating section,
The gas of cooling section flows into high temperature section, to influence the sterilizing of high temperature section and remove thermic effect；, whereas if the pressure of preheating section
Higher than high temperature section, the air of preheating section can flow into high temperature section, cool down pressure increase in high temperature section so as to cause hot-air inflow
Section, influences the cooling effect of cooling section；In the prior art, the working frequency of exhaust blower be definite value, i.e., with air draft when maximum value
For normally opened air quantity, biggish energy consumption is resulted in, in addition, when adjusting the exhaust blower exhaust air rate of cooling section, preheating section and cooling
The pressure of section can be raised simultaneously and be reduced, and exhaust blower is located at cooling section bottom, and exhaust blower air inlet is apart from preheating section air draft
Mouth, the length of cooling section exhaust outlet are different, therefore are difficult to that accurately the pressure difference of three functional sections is adjusted.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of convenient for adjusting pressure difference, operation
Stablize, the dryer that low energy consumption and reliable and stable, accurately and effectively dryer Differential pressure control method.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of dryer, including the preheating section cabinet, high temperature section cabinet and cooling section cabinet set gradually, the preheating section case
Preliminary heating zone flow fan, heat zone flow fan and cooling layer flow fan, institute are successively arranged in body, high temperature section cabinet and cooling section cabinet
Stating dryer further includes preheating air-exhausting duct, cooling, air discharging pipe, total air-exhausting duct and total exhaust blower, the preheating air-exhausting duct, cooling row
The first end of air hose is connected to the preheating section cabinet and cooling section cabinet respectively, the preheating air-exhausting duct, cooling, air discharging pipe
Second end is connected to total air-exhausting duct, be respectively equipped on the preheating air-exhausting duct, cooling, air discharging pipe the first volume control damper,
Second volume control damper, total exhaust blower are installed on total air-exhausting duct.
As a further improvement of the above technical scheme:
High temperature air-exhausting duct is communicated on the high temperature section cabinet, the high temperature air-exhausting duct is equipped with dehumidifier exhaust blower.
It is respectively equipped between room where the preheating section cabinet, high temperature section cabinet and cooling section cabinet and drying body chassis
First differential pressure pickup, the second differential pressure pickup and third differential pressure pickup.
It is efficient that the preheating section cabinet is additionally provided with preheating air inlet, preheating low efficient filter component, pre- air bells cap and preheating
Filter, the preliminary heating zone flow fan by the preheated low efficient filter component of air that preheating air inlet enters for that will be entered
The pre- air bells cap simultaneously blows to the preheating high efficiency particulate air filter, and the preheating high efficiency particulate air filter is located at the transmission net of the dryer
The top of band, the first end of the preheating air-exhausting duct and the connectivity part of the preheating section cabinet are located at the transmission net of the dryer
The lower section of band.
The high temperature section cabinet is additionally provided with wind-supplying mouth, heating holder assembly, bringing-up section fan housing component, return air frame and hi-temp hi-effective
Filter, the heat zone flow fan are used to inhale the benefit wind of wind-supplying mouth and the heated holder assembly of the intracorporal circulated air of high temperature section case
Enter bringing-up section fan housing component and blow to hi-temp hi-effective filter, and enters next work cycle, the high temperature by return air frame
High efficiency particulate air filter is located at the top of the foraminous conveyer of the dryer, the connection of the high temperature air-exhausting duct and the high temperature section cabinet
Place is located at the lower section of the foraminous conveyer of the dryer.
The cooling section cabinet is additionally provided with cooling air inlet, cooling section low efficient filter, cooling section fan housing component and cooling
Section high efficiency particulate air filter, the cooling layer flow fan is for will be through cold air that cooling air inlet enters through cooling section low efficient filter
Cooling section high efficiency particulate air filter is blowed to through cooling section fan housing component, the cooling section high efficiency particulate air filter is located at the conveying of the dryer
The connectivity part of the top of mesh belt, the first end of the cooling, air discharging pipe and the cooling section cabinet is located at the conveying of the dryer
The lower section of mesh belt.
A kind of dryer Differential pressure control method, comprising the following steps:
S1, the working frequency of total exhaust blower and dehumidifier exhaust blower is adjusted to setting value respectively, by room where drying body chassis and
The operating pressure of downstream bottling department is adjusted to setting value during normal production；
S2, the working frequency of preliminary heating zone flow fan, heat zone flow fan and cooling layer flow fan is adjusted until preheating section cabinet, height
Pressure difference where temperature section cabinet and cooling section cabinet and drying body chassis between room is all satisfied setting range value；
S3, it keeps the working frequency of preliminary heating zone flow fan, heat zone flow fan and cooling layer flow fan constant, adjusts the first air quantity
The working frequency of control valve, the aperture of the second volume control damper and dehumidifier exhaust blower make preheating section cabinet, high temperature section cabinet and
The intracorporal pressure difference of cooling section case keeps setting range value, and the exhaust air rate of total exhaust blower is made to be equal to the first volume control damper and second
The sum of exhaust air rate of volume control damper.
As a further improvement of the above technical scheme:
In the step S1, the pressure difference detected according to the first differential pressure pickup adjusts the working frequency of preliminary heating zone flow fan,
The pressure 2-10pa in room where making the intracorporal pressure of preheating section case be higher than drying body chassis, is detected according to the second differential pressure pickup
Pressure difference, adjust heat zone flow fan working frequency, make the intracorporal pressure of high temperature section case be higher than drying body chassis where room
Between pressure 3-12pa, according to third differential pressure pickup detect pressure difference, adjust cooling layer flow fan working frequency, make cold
But the pressure 2-10pa in room where the intracorporal pressure of section case is higher than drying body chassis.
In the step S3, when the pressure in room changes where drying body chassis, the first Boiler pressure control is adjusted
The aperture of valve and the working frequency of dehumidifier exhaust blower keep the aperture of the second volume control damper constant；When the pressure of bottling department is sent out
When changing, the aperture of the second volume control damper is adjusted, keeps the aperture of the first volume control damper and the work of dehumidifier exhaust blower
Frequency is constant.
In the step S1, the setting value of total exhaust blower and dehumidifier exhaust blower working frequency is respectively that it works normally model
The median enclosed.
Compared with the prior art, the advantages of the present invention are as follows:
(1) dryer of the invention, when normal work, when preheating section cabinet, high temperature section cabinet and the intracorporal pressure of cooling section case
Value is adjusted to after meeting job requirement, and the working frequency of preliminary heating zone flow fan, heat zone flow fan and cooling layer flow fan is kept
It is constant, the preheating air-exhausting duct communicated with preheating section cabinet is set, and the cooling, air discharging pipe communicated with cooling section cabinet preheats air-exhausting duct
It is communicated simultaneously with total air-exhausting duct with cooling, air discharging pipe, total exhaust blower is set on total air-exhausting duct from preheating section cabinet and cooling section cabinet
Interior air draft is to adjust the pressure of preheating section cabinet and cooling section cabinet, without the slag hull assembly by drying motor spindle
The air draft out of preheating section cabinet and cooling section cabinet efficiently avoids Air Leakage caused by common exhaust pipe to room pressure
It has an impact, while also avoiding the broken bottle in slag hull assembly as distinguished and admirable be discharged to by exhaust duct outdoor pollutes ring
Border, and preheating section cabinet and cooling can be adjusted separately by the aperture of the first volume control damper of control, the second volume control damper
The section intracorporal specific exhaust air rate of case, that is, realize and adjust separately preheating section cabinet and the intracorporal operating pressure of cooling section case is kept
The purpose of reasonable pressure between preheating section cabinet, cooling section cabinet and room where drying body chassis, easy to adjust, operation can
It leans on, in adjustment process, total exhaust air rate that total exhaust blower is arranged is equal to the row of the first volume control damper and the second volume control damper
The sum of air quantity avoids unnecessary energy loss without remaining higher exhaust air rate.
(2) dryer Differential pressure control method of the invention, firstly, by the working frequency of total exhaust blower and dehumidifier exhaust blower point
It is not adjusted to setting value, the operating pressure in room where drying body chassis and downstream bottling department is adjusted to setting during normal production
Value adjusts the working frequency of preliminary heating zone flow fan, heat zone flow fan and cooling layer flow fan until preheating section cabinet, high temperature section
Pressure difference where cabinet and cooling section cabinet and drying body chassis between room is all satisfied setting range value；Then, preheating is kept
The working frequency of laminar flow blower, heat zone flow fan and cooling layer flow fan is constant, adjusts the first volume control damper, the second air quantity
The aperture of control valve and the working frequency of dehumidifier exhaust blower make preheating section cabinet, high temperature section cabinet and the intracorporal pressure of cooling section case
Difference keeps setting range value, total exhaust blower air draft from preheating section cabinet and cooling section cabinet simultaneously, by adjusting the first air quantity
Control valve, the second volume control damper aperture adjust the exhaust air rate of preheating section cabinet, cooling section cabinet respectively, and by adjusting pumping
The working frequency of wet exhaust blower adjusts the exhaust air rate of high temperature section cabinet dehumidifier air draft, can make preheating section cabinet, high temperature section cabinet
It is maintained at setting range value with the intracorporal pressure difference of cooling section case, the pressure adjustment of three sections of cabinets is relatively independent, it will not interfere with each other,
Therefore, adjustment can be quickly completed, it is easy to adjust, simple and accurate and reliable, in adjustment process, make the exhaust air rate etc. of total exhaust blower
In the sum of the first volume control damper and the exhaust air rate of the second volume control damper, adjust immediately, it is higher without remaining
Exhaust air rate avoids unnecessary energy loss.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dryer of the present invention.
Fig. 2 is the cross-sectional view of dryer preheating section and cooling section of the present invention.
Fig. 3 is the cross-sectional view of dryer high temperature section of the present invention.
Fig. 4 is the schematic diagram of dryer pressure difference control system of the present invention.
Each label indicates in figure:
1, preheating section cabinet；101, preliminary heating zone flow fan；102, low efficient filter component is preheated；103, pre- air bells cap；104, pre-
Hot high efficiency particulate air filter；2, high temperature section cabinet；201, heat zone flow fan；202, wind-supplying mouth；203, holder assembly is heated；204, it heats
Section fan housing component；205, return air frame；206, hi-temp hi-effective filter；3, cooling section cabinet；301, cooling layer flow fan；302, cold
But air inlet；303, cooling section low efficient filter；304, cooling section fan housing component；305, cooling section high efficiency particulate air filter；4, it preheats
Air-exhausting duct；5, cooling, air discharging pipe；6, total air-exhausting duct；7, total exhaust blower；8, the first volume control damper；9, the second volume control damper；
10, high temperature air-exhausting duct；11, dehumidifier exhaust blower；12, the first differential pressure pickup；13, the second differential pressure pickup；14, third pressure difference passes
Sensor；15, foraminous conveyer；16, master controller.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
Fig. 1 to Fig. 4 has gone out a kind of embodiment of dryer of the present invention, the dryer of the present embodiment, including what is set gradually
Preheating section cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3, in preheating section cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3 according to
Secondary to be equipped with preliminary heating zone flow fan 101, heat zone flow fan 201 and cooling layer flow fan 301, dryer further includes preheating air-exhausting duct
4, cooling, air discharging pipe 5, total air-exhausting duct 6 and total exhaust blower 7, preheating air-exhausting duct 4, cooling, air discharging pipe 5 first end respectively with preheating
Section cabinet 1 be connected to cooling section cabinet 3, preheat air-exhausting duct 4, cooling, air discharging pipe 5 second end be connected to total air-exhausting duct 6, in advance
The first volume control damper 8, the second volume control damper 9 are respectively equipped on hot air-exhausting duct 4, cooling, air discharging pipe 5, total exhaust blower 7 is installed
On total air-exhausting duct 6, when normal work, when the pressure value adjustment in preheating section cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3
To after meeting job requirement, the working frequency of preliminary heating zone flow fan 101, heat zone flow fan 201 and cooling layer flow fan 301 is protected
Hold the preheating air-exhausting duct 4 constant, setting is communicated with preheating section cabinet 1, the cooling, air discharging pipe 5 communicated with cooling section cabinet 3, preheating
Air-exhausting duct 4 and cooling, air discharging pipe 5 are communicated with total air-exhausting duct 6 simultaneously, and total exhaust blower 6 is arranged on total air-exhausting duct 6 simultaneously from preheating section
Air draft is in cabinet 1 and cooling section cabinet 3 to adjust the pressure of preheating section cabinet 1 and cooling section cabinet 3, without passing through drying
The air draft out of preheating section cabinet 1 and cooling section cabinet 3 of the slag hull assembly of motor spindle, efficiently avoids common exhaust pipe and leads
The Air Leakage of cause has an impact room pressure, while also avoiding the broken bottle in slag hull assembly and passing through row with distinguished and admirable
Air piping is discharged to outdoor and pollutes environment, and can be with by the aperture of the first volume control damper 8 of control, the second volume control damper 9
The specific exhaust air rate in preheating section cabinet 1 and cooling section cabinet 3 is adjusted separately, adjusts separately preheating section cabinet 1 to realize
Room where keeping preheating section cabinet 1, cooling section cabinet 3 and drying body chassis with the operating pressure in cooling section cabinet 3 it
Between reasonable pressure purpose, easy to adjust, reliable for operation, in adjustment process, total exhaust air rate that total exhaust blower 7 is arranged is equal to
The sum of the exhaust air rate of first volume control damper 8 and the second volume control damper 9, without remaining higher air draft
Amount, avoids unnecessary energy loss.
In the present embodiment, high temperature air-exhausting duct 10 is communicated on high temperature section cabinet 2, high temperature air-exhausting duct 10 is equipped with dehumidifier air draft
Machine 11, when needing to adjust the pressure in high temperature section cabinet 2, by adjusting the dehumidifier exhaust air rate of dehumidifier exhaust blower 11.
In the present embodiment, room where preheating section cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3 and drying body chassis it
Between be respectively equipped with the first differential pressure pickup 12, the second differential pressure pickup 13 and third differential pressure pickup 14, pass through the first pressure difference pass
Pressure difference where sensor 12 monitors preheating section cabinet 1 and drying body chassis between room is monitored by the second differential pressure pickup 13
Pressure difference where high temperature section cabinet 2 and drying body chassis between room monitors cooling section cabinet 3 by third differential pressure pickup 14
Pressure difference where with drying body chassis between room, once pressure difference is not in the reasonable scope, then respectively by changing the first wind
The dehumidifier exhaust air rate of the exhaust air rate of control valve 8, the exhaust air rate of the second volume control damper 9 or dehumidifier exhaust blower 11 is adjusted.
In the present embodiment, preheating section cabinet 1 is additionally provided with preheating air inlet, preheating low efficient filter component 102, pre- air bells cap
103 with preheating high efficiency particulate air filter 104, and the air that preliminary heating zone flow fan 101 is used to enter by preheating air inlet will be preheated slightly
Effect filter assemblies 102 enter pre- air bells cap 103 and blow to preheating high efficiency particulate air filter 104, and preheating high efficiency particulate air filter 104, which is located at, to be dried
The connectivity part of the top of the foraminous conveyer 15 of dry machine, the first end and preheating section cabinet 1 that preheat air-exhausting duct 4 is located at the defeated of dryer
The lower section of mesh belt 15 is sent, i.e. gas in preheating section cabinet 1 is needed ceaselessly outside preheating section cabinet 1 by the way of outer circulation
Portion's air inlet, fresh air successively act on after preheating low efficient filter component 102, pre- air bells cap 103 and preheating high efficiency particulate air filter 104
Bottle body on foraminous conveyer 15.
In the present embodiment, high temperature section cabinet 2 is additionally provided with wind-supplying mouth 202, heating holder assembly 203, bringing-up section fan housing component
204, return air frame 205 and hi-temp hi-effective filter 206, heat zone flow fan 201 are used for the benefit wind and high temperature section of wind-supplying mouth 202
The heated holder assembly 203 of circulated air in cabinet 2 sucks bringing-up section fan housing component 204 and blows to hi-temp hi-effective filter 206, and
Enter next work cycle by return air frame 205, hi-temp hi-effective filter 206 is located at the upper of the foraminous conveyer 15 of dryer
The connectivity part of side, high temperature air-exhausting duct 10 and high temperature section cabinet 2 is located at the lower section of the foraminous conveyer 15 of dryer, high temperature section cabinet 2
Interior gas uses interior circulation pattern, only mends wind on a small quantity when required by wind-supplying mouth 202, and setting return air frame 205 makes to act on
The gas of bottle body on foraminous conveyer 15 enters next work cycle.
In the present embodiment, cooling section cabinet 3 is additionally provided with cooling air inlet 302, cooling section low efficient filter 303, cooling section
Fan housing component 304 and cooling section high efficiency particulate air filter 305, cooling layer flow fan 301 are cold for that will enter through cooling air inlet 302
Air blows to cooling section high efficiency particulate air filter 305 through cooling section fan housing component 304 through cooling section low efficient filter 303, and cooling section is high
Effect filter 305 is located at the top of the foraminous conveyer 15 of dryer, the first end of cooling, air discharging pipe 5 and the company of cooling section cabinet 3
Logical place is located at the lower section of the foraminous conveyer 15 of dryer, i.e. gas in cooling section cabinet 3 need to not be stopped by the way of outer circulation
Ground is entered the wind outside cooling section cabinet 3, and fresh air successively passes through cooling air inlet 302, cooling section low efficient filter 303, cooling section
The bottle body on foraminous conveyer 15 is acted on after fan housing component 304 and cooling section high efficiency particulate air filter 305.
Dryer Differential pressure control method of the invention the following steps are included:
S1, the working frequency of total exhaust blower 7 and dehumidifier exhaust blower 11 is adjusted to setting value respectively, by room where drying body chassis
Setting value during normal production is adjusted to the operating pressure of downstream bottling department；
S2, the working frequency of preliminary heating zone flow fan 101, heat zone flow fan 201 and cooling layer flow fan 301 is adjusted until preheating
Pressure difference between section cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3 and drying body chassis place room is all satisfied setting range
Value；
S3, it keeps the working frequency of preliminary heating zone flow fan 101, heat zone flow fan 201 and cooling layer flow fan 301 constant, adjusts
The working frequency for saving the first volume control damper 8, the aperture of the second volume control damper 9 and dehumidifier exhaust blower 11 makes preheating section cabinet
1, pressure difference in high temperature section cabinet 2 and cooling section cabinet 3 keeps setting range value, and the exhaust air rate of total exhaust blower 7 is made to be equal to the
The sum of the exhaust air rate of one volume control damper 8 and the second volume control damper 9.
In dryer Differential pressure control method of the invention, firstly, by the working frequency of total exhaust blower 7 and dehumidifier exhaust blower 11
It is adjusted to setting value respectively, the operating pressure in room where drying body chassis and downstream bottling department is adjusted to setting during normal production
Definite value adjusts the working frequency of preliminary heating zone flow fan 101, heat zone flow fan 201 and cooling layer flow fan 301 until preheating section
Pressure difference where cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3 and drying body chassis between room is all satisfied setting range value；
Then, it keeps the working frequency of preliminary heating zone flow fan 101, heat zone flow fan 201 and cooling layer flow fan 301 constant, adjusts
The working frequency of first volume control damper 8, the aperture of the second volume control damper 9 and dehumidifier exhaust blower 11 make preheating section cabinet 1,
Pressure difference in high temperature section cabinet 2 and cooling section cabinet 3 keeps setting range value, and total exhaust blower 7 is simultaneously from preheating section cabinet 1 and cold
But air draft in section cabinet 3, the aperture by adjusting the first volume control damper 8, the second volume control damper 9 adjust preheating section case respectively
The exhaust air rate of body 1, cooling section cabinet 3, and by adjusting the working frequency of dehumidifier exhaust blower 11, adjust 2 dehumidifier of high temperature section cabinet
The exhaust air rate of air draft can make the pressure difference in preheating section cabinet 1, high temperature section cabinet 2 and cooling section cabinet 3 be maintained at setting range
The pressure adjustment of value, three sections of cabinets is relatively independent, will not interfere with each other, therefore, can quickly complete adjustment, easy to adjust, simple
And it is accurate and reliable, in adjustment process, the exhaust air rate of total exhaust blower 7 is made to be equal to the first volume control damper 8 and the second Boiler pressure control
The sum of the exhaust air rate of valve 9 adjusts immediately, without remaining higher exhaust air rate, avoids unnecessary energy loss.
In the present embodiment, in step sl, according to the pressure difference that the first differential pressure pickup 12 detects, preheating laminar winds are adjusted
The working frequency of machine 101, the pressure 2-10pa in room where making the pressure in preheating section cabinet 1 be higher than drying body chassis, according to
The pressure difference of second differential pressure pickup 13 detection, adjusts the working frequency of heat zone flow fan 201, makes in high temperature section cabinet 2
The pressure 3-12pa in room where pressure is higher than drying body chassis is adjusted according to the pressure difference that third differential pressure pickup 14 detects
The working frequency of cooling layer flow fan 301, the pressure 2- in room where making the pressure in cooling section cabinet 3 be higher than drying body chassis
10pa。
In the present embodiment, in step s3, when the pressure in room changes where drying body chassis, the first wind is adjusted
The aperture of control valve 8 and the working frequency of dehumidifier exhaust blower 11 keep the aperture of the second volume control damper 9 constant；When filling
Between pressure when changing, adjust the aperture of the second volume control damper 9, keep the aperture and dehumidifier of the first volume control damper 8
The working frequency of exhaust blower 11 is constant, and when the pressure in room changes where drying body chassis, what is typically directly influenced is
Pressure value in preheating section cabinet 1 and high temperature section cabinet 2, therefore only adjust the aperture and dehumidifier air draft of the first volume control damper 8
The working frequency of machine 11, and when the pressure of bottling department changes, what is typically directly influenced is the cooling directly communicated
Pressure value in section cabinet 3, therefore the aperture of the second volume control damper 9 is only adjusted, further simplify adjustment operation.
In the present embodiment, in step sl, the setting value of 11 working frequency of total exhaust blower 7 and dehumidifier exhaust blower is respectively it
The median of normal range of operation, it is subsequent need to adjust when, guarantee the working frequency of total exhaust blower 7 and dehumidifier exhaust blower 11 to
It is upper to have enough adjustment spaces downwards.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (10)
1. a kind of dryer, including the preheating section cabinet (1), high temperature section cabinet (2) and cooling section cabinet (3) set gradually, institute
It states in preheating section cabinet (1), high temperature section cabinet (2) and cooling section cabinet (3) and is successively arranged preliminary heating zone flow fan (101), high temperature
Laminar flow blower (201) and cooling layer flow fan (301), it is characterised in that: the dryer further includes preheating air-exhausting duct (4), cold
But air-exhausting duct (5), total air-exhausting duct (6) and total exhaust blower (7), the first end for preheating air-exhausting duct (4), cooling, air discharging pipe (5)
It is respectively connected to the preheating section cabinet (1) and cooling section cabinet (3), preheating air-exhausting duct (4), cooling, air discharging pipe (5)
Second end is connected to total air-exhausting duct (6), and the preheating air-exhausting duct (4), cooling, air discharging pipe are respectively equipped with the first wind on (5)
Control valve (8), the second volume control damper (9), total exhaust blower (7) are installed on total air-exhausting duct (6).
2. dryer according to claim 1, it is characterised in that: be communicated with high temperature air draft on the high temperature section cabinet (2)
It manages (10), the high temperature air-exhausting duct (10) is equipped with dehumidifier exhaust blower (11).
3. dryer according to claim 1, it is characterised in that: the preheating section cabinet (1), high temperature section cabinet (2) and
The first differential pressure pickup (12), the second pressure difference sensing are respectively equipped between room where cooling section cabinet (3) and drying body chassis
Device (13) and third differential pressure pickup (14).
4. dryer according to any one of claim 1 to 3, it is characterised in that: the preheating section cabinet (1) is additionally provided with
Air inlet, preheating low efficient filter component (102), pre- air bells cap (103) and preheating high efficiency particulate air filter (104) are preheated, it is described pre-
Thermosphere flow fan (101) is for entering institute for the preheated low efficient filter component (102) of air entered by preheating air inlet
It states pre- air bells cap (103) and blows to the preheating high efficiency particulate air filter (104), the preheating high efficiency particulate air filter (104) is located at described
The top of the foraminous conveyer (15) of dryer, the first end of preheating air-exhausting duct (4) and the connection of the preheating section cabinet (1)
Place is located at the lower section of the foraminous conveyer (15) of the dryer.
5. dryer according to claim 2 or 3, it is characterised in that: the high temperature section cabinet (2) is additionally provided with wind-supplying mouth
(202), holder assembly (203), bringing-up section fan housing component (204), return air frame (205) and hi-temp hi-effective filter (206), institute are heated
Heat zone flow fan (201) are stated to be used for the heated seat group of circulated air in the benefit wind of wind-supplying mouth (202) and high temperature section cabinet (2)
Part (203) sucking bringing-up section fan housing component (204) simultaneously blows to hi-temp hi-effective filter (206), and enters by return air frame (205)
Next work cycle, the hi-temp hi-effective filter (206) is located at the top of the foraminous conveyer (15) of the dryer, described
The connectivity part of high temperature air-exhausting duct (10) and the high temperature section cabinet (2) is located at the lower section of the foraminous conveyer (15) of the dryer.
6. dryer according to any one of claim 1 to 3, it is characterised in that: the cooling section cabinet (3) is additionally provided with
Cooling air inlet (302), cooling section low efficient filter (303), cooling section fan housing component (304) and cooling section high efficiency particulate air filter
(305), the cooling layer flow fan (301) was for slightly imitating the cold air entered through cooling air inlet (302) through cooling section
Filter (303) blows to cooling section high efficiency particulate air filter (305) through cooling section fan housing component (304), the cooling section high efficiency particulate air filter
(305) positioned at the top of the foraminous conveyer (15) of the dryer, the first end of the cooling, air discharging pipe (5) and the cooling section
The connectivity part of cabinet (3) is located at the lower section of the foraminous conveyer (15) of the dryer.
7. a kind of dryer Differential pressure control method, which comprises the following steps:
S1, the working frequency of total exhaust blower (7) and dehumidifier exhaust blower (11) is adjusted to setting value respectively, it will be where drying body chassis
The operating pressure of room and downstream bottling department is adjusted to setting value during normal production；
S2, the working frequency for adjusting preliminary heating zone flow fan (101), heat zone flow fan (201) and cooling layer flow fan (301) are straight
It is equal to the pressure difference where preheating section cabinet (1), high temperature section cabinet (2) and cooling section cabinet (3) and drying body chassis between room
Meet setting range value；
S3, the working frequency of preliminary heating zone flow fan (101), heat zone flow fan (201) and cooling layer flow fan (301) is kept not
Become, adjusts the first volume control damper (8), the aperture of the second volume control damper (9) and the working frequency of dehumidifier exhaust blower (11)
So that the pressure difference in preheating section cabinet (1), high temperature section cabinet (2) and cooling section cabinet (3) is kept setting range value, and makes total air draft
The exhaust air rate of machine (7) is equal to the sum of the exhaust air rate of the first volume control damper (8) and the second volume control damper (9).
8. dryer Differential pressure control method according to claim 7, it is characterised in that: in the step S2, according to
The pressure difference of one differential pressure pickup (12) detection, adjusts the working frequency of preliminary heating zone flow fan (101), makes preheating section cabinet (1)
The pressure 2-10pa in room where interior pressure is higher than drying body chassis, the pressure difference detected according to the second differential pressure pickup (13)
Value adjusts the working frequency of heat zone flow fan (201), is higher than the pressure in high temperature section cabinet (2) where drying body chassis
The pressure 3-12pa in room adjusts the work of cooling layer flow fan (301) according to the pressure difference that third differential pressure pickup (14) are detected
Working frequency, the pressure 2-10pa in room where making the pressure in cooling section cabinet (3) be higher than drying body chassis.
9. dryer Differential pressure control method according to claim 7 or 8, it is characterised in that: in the step S3, work as baking
When the pressure in room changes where dry box body, the aperture and dehumidifier exhaust blower (11) of the first volume control damper (8) are adjusted
Working frequency, keep the second volume control damper (9) aperture it is constant；When the pressure of bottling department changes, second is adjusted
The aperture of volume control damper (9), the working frequency of the aperture and dehumidifier exhaust blower (11) that keep the first volume control damper (8) is not
Become.
10. dryer Differential pressure control method according to claim 7 or 8, it is characterised in that: in the step S1, always
The setting value of exhaust blower (7) and dehumidifier exhaust blower (11) working frequency is respectively the median of its normal range of operation.
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| CN201810820455.6A CN109028881A (en) | 2018-07-24 | 2018-07-24 | A kind of dryer and its Differential pressure control method |
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| CN201810820455.6A CN109028881A (en) | 2018-07-24 | 2018-07-24 | A kind of dryer and its Differential pressure control method |
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| CA2370711A1 (en) * | 1999-04-27 | 2000-11-02 | Mohamed A. Hashish | Method and apparatus for pressure processing a pumpable substance |
| US9234700B1 (en) * | 2013-03-15 | 2016-01-12 | Carbonyx, Inc. | Tunnel oven air leakage controller, system and method |
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Application publication date: 20181218 |