CN103750529A - Stable control device and control method for micro-pressure moisture removal - Google Patents
Stable control device and control method for micro-pressure moisture removal Download PDFInfo
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- CN103750529A CN103750529A CN201410037975.1A CN201410037975A CN103750529A CN 103750529 A CN103750529 A CN 103750529A CN 201410037975 A CN201410037975 A CN 201410037975A CN 103750529 A CN103750529 A CN 103750529A
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Abstract
The invention relates to a stable control device and control method for micro-pressure moisture removal. The stable control device for micro-pressure moisture removal comprises a first moisture removal air pipe, a second moisture removal air pipe, a third moisture removal air pipe, a master moisture removal pipe, a power fan and a control system, wherein the first end of the first moisture removal air pipe is connected with a discharge cover of a process device, the second end of the first moisture removal air pipe is connected with the first end of the second moisture removal air pipe, the second end of the second moisture removal air pipe is connected with the third moisture removal air pipe, the second end of the third moisture removal air pipe is connected with the master moisture removal pipe, one end of the master moisture removal pipe is connected with the power motor, the control system comprises a pressure sensor, a master control device, an angular actuator and an automatic air door, the automatic air door is arranged inside the first moisture removal air pipe, and the pressure sensor is arranged inside the second moisture removal air pipe. The stable control device for micro-pressure moisture removal solves the problems that air volume and air pressure of moisture discharge of process devices in the prior art are not stable, and a pressure sensor loses effect as dirt adheres to the pressure sensor.
Description
Technical field
The present invention relates to technical field of tobacco processing, be specifically related to a kind of stabilization control device and control method thereof of minute-pressure humidity discharging.
Background technology
On tobacco cutting production line, a large amount of process equipments needs to discharge a certain amount of moisture in process of production.At present, the discharge of the moisture of process equipment is normally collected together the moisture of whole production line process equipment discharge under the effect of driven fan, to concentrate the mode of humidity discharging to be discharged into outside workshop by humidity discharging house steward.For fear of or reduce offal in process equipment or essence, spices is taken away by humidity discharging system, and the waste that reduces the energy, the pressure operated by rotary motion in exhausting moisture pipeline is between-200～-1000pa.According to the requirement of processing technology quality stability, need to stablize control to the humidity discharging pressure of process equipment, traditional control method has 2 kinds: 1, moisture directly discharges, and humidity discharging blast is not controlled; 2, by the aperture of manual air door manual adjustment air door, control the humidity discharging air quantity of process equipment.
Concentrate the mode of humidity discharging because of the variation that starting or stoping of certain in humidity discharging system or some process equipment produces systematic air flow, to affect the air quantity of other equipment that are just being in operation, the stability of a system is poor.Prior art, because the moisture discharge air quantity or the blast that lack existing process equipment control effectively, causes the tidal volume fluctuation of discharge larger, causes unstable at quality of item.Mainly there is following shortcoming: 1, moisture directly discharges or by manual air door manual adjustment mode, because of humidity discharging air quantity, do not control, and humidity discharging air quantity can fluctuate constantly, and the interior environment that causes process equipment to be produced is unstable, cause unstable at quality of item; If the negative pressure setting in 2 exhausting moisture pipelines is too large, can cause offal in process equipment or essence, spices to be taken away by humidity discharging system, cause waste and follow-up line clogging; If the negative pressure setting in exhausting moisture pipeline is too little, can cause that moisture emits outward, surrounding enviroment and equipment are polluted.
Summary of the invention
The stabilization control device and the control method thereof that the object of the invention is to propose a kind of minute-pressure humidity discharging, the stabilization control device of this minute-pressure humidity discharging has solved the problems referred to above effectively.
In order to narrate conveniently, below alleged pressure is negative pressure, and its value is negative pressure value.
For achieving the above object, the invention provides following technical scheme:
A stabilization control device for minute-pressure humidity discharging, stabilization control device comprises the first humidity discharging airduct, the second humidity discharging airduct, the 3rd humidity discharging airduct, humidity discharging house steward, driven fan and control system;
The first end of the first humidity discharging airduct is connected with the discharging cover of process equipment, the second end is connected with the first end of the second humidity discharging airduct, the second end of the second humidity discharging airduct is connected with the 3rd humidity discharging airduct, the second end of the 3rd humidity discharging airduct is connected with humidity discharging house steward, and one end of humidity discharging house steward is connected with driven fan;
Control system comprises pressure sensor, master control set, angle actuator and self closing door, self closing door is arranged on the inside of the first humidity discharging airduct, pressure sensor is arranged on the inside of the second humidity discharging airduct, and pressure sensor, master control set, angle actuator are connected successively with self closing door;
Pressure sensor is for gathering the pressure of the second humidity discharging airduct inside and pressure condition being fed back to master control set, and master control set sends instruction to angle actuator, regulates the aperture of self closing door by angle actuator.
At one, preferably or alternatively in embodiment, stabilization control device also comprises manual air door, and manual air door is arranged on the first humidity discharging airduct, and manual air door is arranged between the discharging cover of self closing door and process equipment.
At one, preferably or alternatively in embodiment, the diameter of the first humidity discharging airduct is greater than the diameter of the second humidity discharging airduct.
At one, preferably or alternatively in embodiment, the diameter of the 3rd humidity discharging airduct is greater than the diameter of the second humidity discharging airduct.
At one, preferably or alternatively in embodiment, the diameter of the first humidity discharging airduct equals the diameter of the 3rd humidity discharging airduct.
At one preferably or alternatively in embodiment, the epimere of the second humidity discharging airduct is that inclined tube, hypomere are VERTICAL TUBE, inclined tube is connected with the 3rd humidity discharging airduct, the VERTICAL TUBE of the second humidity discharging airduct and the 3rd humidity discharging airduct shift to install, and the beeline between the upright side walls of the VERTICAL TUBE of the second humidity discharging airduct and the upright side walls of the 3rd humidity discharging airduct is more than or equal to 10mm, is less than or equal to 50mm.
At one, preferably or alternatively in embodiment, the sidewall of the 3rd humidity discharging airduct is from the junction of the sidewall on the top of the inclined tube of the second humidity discharging airduct and the sidewall of the 3rd humidity discharging airduct to downward-extension.
At one preferably or alternatively in embodiment, from the junction of the sidewall on the top of the inclined tube of the second humidity discharging airduct and the sidewall of the 3rd humidity discharging airduct, the distance to downward-extension is more than or equal to 10mm, is less than or equal to 20mm the sidewall of the 3rd humidity discharging airduct.
At one preferably or alternatively in embodiment, stabilization control device also comprises condensation water collection funnel and condensation water collection pipe, the first end of the 3rd humidity discharging airduct is connected with the top of condensation water collection funnel, and the bottom of condensation water collection funnel is connected with condensation water collection pipe.
At one preferably or alternatively in embodiment, on the first humidity discharging airduct, the second humidity discharging airduct and the 3rd humidity discharging airduct, be respectively arranged with air quantity or blast and detect mouthful.
At one, preferably or alternatively in embodiment, the first end of the first humidity discharging airduct is connected with discharging cover, feed end humidity discharging cover, the discharge end humidity discharging cover of process equipment respectively.
The present invention also provides following technical scheme:
A control method for the stabilization control device of minute-pressure humidity discharging, control method comprises the steps:
Step 1: determine the pressure given value in the second humidity discharging airduct
According to P
2=(D
1/ D
2)
4p
1and D
1, D
2, P
1value try to achieve P
2, by P
2the result of calculating is made as P
0, upper and lower deviation range △ P is set, set-point is [P
0-△ P, P
0+ △ P];
Wherein, D
1be the first humidity discharging dust diameter, D
2be the second humidity discharging dust diameter, P
1be the pressure in the first humidity discharging airduct, P
2be the pressure in the second humidity discharging airduct;
Step 2: the probe of pressure sensor is the pressure P of automatic detection the second humidity discharging airduct inside constantly
2, and by pressure P
2feed back to master control set, master control set is by P
2with set-point comparison;
Work as P
2be greater than P
0during+△ P, master control set sends instruction to angle actuator, by angle actuator, turns self closing door aperture down; Work as P
2be less than P
0during-△ P, master control set sends instruction to angle actuator, by angle actuator, tunes up self closing door aperture; Work as P
2be more than or equal to P
0-△ P and be less than or equal to P
0during+△ P, master control set does not send instruction to angle actuator, keeps self closing door aperture constant.
At one, preferably or alternatively in embodiment, △ P settings are 10pa.
Arbitrary technical scheme based in technique scheme, the embodiment of the present invention at least can produce following technique effect:
Because the stabilization control device of minute-pressure humidity discharging provided by the present invention comprises the first humidity discharging airduct, the second humidity discharging airduct, the 3rd humidity discharging airduct, humidity discharging house steward, driven fan and control system, control system comprises pressure sensor, master control set, angle actuator and self closing door, self closing door is arranged on the inside of the first humidity discharging airduct, pressure sensor is arranged on the inside of the second humidity discharging airduct, pressure sensor, master control set, angle actuator is connected successively with self closing door, humidity discharging tail gas is under the effect of driven fan, through the first humidity discharging airduct, the second humidity discharging airduct, the 3rd humidity discharging airduct and humidity discharging house steward discharge, solved the unstable of prior art processes equipment moisture discharge air quantity and blast, and pressure sensor is by the problem of foul adhesion inefficacy.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the stabilization control device of minute-pressure humidity discharging of the present invention;
Fig. 2 is the enlarged diagram of the second humidity discharging airduct of the present invention and the 3rd humidity discharging airduct junction.
The specific embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
It should be noted that: any technical characterictic in the present embodiment, any technical scheme is all the technical characterictic of plurality of optional or one or more in optional technical scheme, cannot exhaustive all alternative technical characterictics of the present invention and alternative technical scheme in order to describe succinct need in presents, also the embodiment that is not easy to each technical characterictic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: any technical characterictic and any technical scheme in the present embodiment all do not limit the scope of the invention, protection scope of the present invention should comprise that those skilled in the art do not pay the thinkable any alternate embodiments of creative work.
Below in order to narrate conveniently, hereinafter alleged " left side ", " right side ", " on ", left and right, the upper and lower of D score and accompanying drawing itself is to consistent.
In order to narrate conveniently, below alleged pressure is negative pressure, and its value is negative pressure value.
As shown in Figure 1, a kind of stabilization control device of minute-pressure humidity discharging, stabilization control device comprises the first humidity discharging airduct 10, the second humidity discharging airduct 11, the 3rd humidity discharging airduct 13, humidity discharging house steward 2, driven fan 1 and control system;
The first end of the first humidity discharging airduct 10 is connected with the discharging cover 7 of process equipment 8, the second end is connected with the first end of the second humidity discharging airduct 11, the second end of the second humidity discharging airduct 11 is connected with the 3rd humidity discharging airduct 13, the second end of the 3rd humidity discharging airduct 13 is connected with humidity discharging house steward 2, and one end of humidity discharging house steward 2 is connected with driven fan 1;
Control system comprises pressure sensor 3, master control set 4, angle actuator 5 and self closing door 6, self closing door 6 is arranged on the inside of the first humidity discharging airduct 10, pressure sensor 3 is arranged on the inside of the second humidity discharging airduct 11, and pressure sensor 3, master control set 4, angle actuator 5 and self closing door 6 are connected successively;
Minute-pressure refers to that the pressure of the first humidity discharging airduct inside is less than or equal to 1000pa.
Master control set can be that PLC, single-chip microcomputer, single board computer or integrated circuit are realized.
Humidity discharging tail gas, under the effect of driven fan, is discharged through the first humidity discharging airduct, the second humidity discharging airduct, the 3rd humidity discharging airduct and humidity discharging house steward.Humidity discharging arm has been designed to the first humidity discharging airduct, the second humidity discharging airduct and three parts of the 3rd humidity discharging airduct, each part has different separately functions, the invention solves humidity discharging arm in prior art and lack the shortcoming that moisture discharge air quantity or the blast of process equipment are control effectively, realized the precise and stable control constantly to humidity discharging air quantity or blast, make process equipment production run stable, avoid pressure sensor to be adhered to and lost efficacy, and solved in moisture with tobacco tar and tiny material foreign material blocking pipe by tiny material or essence, spices, tobacco tar.
Stabilization control device also comprises manual air door 9, and manual air door 9 is arranged on the first humidity discharging airduct 10, and manual air door 9 is arranged between the discharging cover 7 of self closing door 6 and process equipment.
The diameter of the first humidity discharging airduct 10 is greater than the diameter of the second humidity discharging airduct 11.
Wind speed in the first humidity discharging airduct is set to 10m/s left and right, overpressure is now less than 100pa, the tiny material of kicking up in the discharging cover 7 of process equipment 8 and essence or spices are not easy to be discharged by humidity discharging system, cut the waste and avoid the obstruction of follow-up exhausting moisture pipeline.
By the second humidity discharging airduct dwindle caliber design, detected humidity discharging blast is amplified, use the usual pressure sensor of industrial use just can realize the pressure of Measurement accuracy humidity discharging, saving equipment operating cost.Simultaneously, during pressure generation minor variations in process equipment discharging cover, in the second humidity discharging airduct, just can produce larger variation, common pressure sensor can detect and feed back to the control system of process equipment accurately and timely, make self closing door automatically adjust its aperture with the variation of humidity discharging pressure, thereby realize the stable of humidity discharging air quantity control.In addition, the wind speed that the second humidity discharging airduct design is higher, higher wind speed has played purging effect to the probe of pressure sensor, effectively avoid in humidity discharging tail gas with tiny material or essence, spices, condensed water be attached on the probe of pressure sensor.
The diameter of the 3rd humidity discharging airduct 13 is greater than the diameter of the second humidity discharging airduct 11.
The wind speed that the 3rd humidity discharging airduct design is lower, be conducive in humidity discharging tail gas with the condensed water of tiny material or essence, spices herein sedimentation collect and discharge, avoid being transported to follow-up pipeline and the obstruction that causes pipeline.
The diameter of the first humidity discharging airduct 10 preferably equals the diameter of the 3rd humidity discharging airduct 13.
As shown in Figure 2, the epimere of the second humidity discharging airduct 11 is that inclined tube, hypomere are VERTICAL TUBE, inclined tube is connected with the 3rd humidity discharging airduct 13, the VERTICAL TUBE of the second humidity discharging airduct and the 3rd humidity discharging airduct shift to install, and the beeline between the upright side walls B of the VERTICAL TUBE of the second humidity discharging airduct 11 and the upright side walls A of the 3rd humidity discharging airduct 13 is more than or equal to 10mm, is less than or equal to 50mm.
The VERTICAL TUBE of the second humidity discharging airduct and the 3rd humidity discharging airduct shift to install the extended line of the VERTICAL TUBE that refers to the second humidity discharging airduct and the extended line of the 3rd humidity discharging airduct does not have overlapping place each other.
The sidewall A of the 3rd humidity discharging airduct 13 is from the junction of the sidewall C on the top of the inclined tube of the second humidity discharging airduct 11 and the sidewall A of the 3rd humidity discharging airduct 13 to downward-extension, avoid from the 3rd humidity discharging airduct and afterwards the condensed water with tiny material and tobacco tar of pipeline from sidewall A along sidewall C toward the dirty pressure sensor that affects to tonometric accuracy.
From the junction of the sidewall C on the top of the inclined tube of the second humidity discharging airduct 11 and the sidewall A of the 3rd humidity discharging airduct 13, the distance to downward-extension is more than or equal to 10mm, is less than or equal to 20mm the sidewall A of the 3rd humidity discharging airduct 13.
Stabilization control device also comprises condensation water collection funnel and condensation water collection pipe 12, the first end of the 3rd humidity discharging airduct 13 is connected with the top of condensation water collection funnel, the bottom of condensation water collection funnel is connected with condensation water collection pipe 12, collecting pipe is directly discharged to the condensed water of collecting in the sewage network of workshop, avoids being back to process equipment and causes the generation of water stain cigarette and affect at quality of item.
On the first humidity discharging airduct 10, the second humidity discharging airduct 11 and the 3rd humidity discharging airduct 13, be respectively arranged with air quantity or blast and detect mouth, be convenient to according to daily need, measure at any time the pressure condition in airduct, and the accuracy of pressure sensor.
The first end of the first humidity discharging airduct 10 is connected with discharging cover, feed end humidity discharging cover, the discharge end humidity discharging cover of process equipment respectively, the moisture that discharging cover, feed end humidity discharging cover, the discharge end humidity discharging cover that the first humidity discharging airduct can collection process equipment need to discharge.
The parameter determining step of each parts of stabilization control device is as follows:
1, determine the first humidity discharging airduct parameter
The pipe range of the first humidity discharging airduct is advisable with 1 meter of left and right, dust diameter D
1computational methods as follows:
Because Q=3600 π is D
1 2v
1/ 4
?
In formula: D
1it is the first humidity discharging dust diameter;
Q is humidity discharging air quantity (m
3/ h, by device fabrication, manufacturer provides);
V
1it is the mean wind speed in the first humidity discharging airduct.
In this method, the mean wind speed in the first humidity discharging airduct is 6～12m/s, according to the concrete condition of different process equipment, chooses, and cigarette process is generally got V
1=10m/s is comparatively reasonable.
2, determine the second humidity discharging airduct parameter
The pipe range of the second humidity discharging airduct is advisable between 0.5～1 meter, dust diameter D
2computational methods as follows:
By formula: Q=3600 π D
2v/4 and P=1/2 ρ V
2
Push away
In formula: D
1it is the first humidity discharging dust diameter;
D
2it is the second humidity discharging dust diameter;
P
1be the pressure in the first humidity discharging airduct;
P
2be the pressure in the second humidity discharging airduct.
According to the process requirements of process equipment, by manual air door, regulate the pressure P in the first humidity discharging airduct
1size, guarantee the moisture of process equipment to discharge completely smoothly, avoid pressure P simultaneously
1too large and the tiny material in process equipment (or essence, spices etc.) is siphoned away, cause waste and follow-up blocking pipe.Pressure P
1control method as follows:
(1) according to practical experience, manual air door is transferred to a certain position;
(2), under process equipment normal operating conditions, observe the moisture emission behaviour of process equipment;
If the moisture of process equipment cannot be discharged completely smoothly, show that the aperture of manual air door is inadequate, need progressively tune up the aperture of manual air door, until moisture can be discharged just completely smoothly; If the moisture of process equipment can be discharged completely smoothly, likely the aperture of manual air door is too large, need progressively turn the aperture of manual air door down, until find that there is a small amount of moisture, at the periphery of process equipment, emerge, moisture progressively tunes up the aperture of manual air door, until can be discharged just completely smoothly again;
(3) manual air door 9 is fixing;
(4) after above-mentioned (1), (2), (3) step, by the pressure P in manual measurement device measuring the first humidity discharging airduct 10
1.
Pressure P in the second humidity discharging airduct
2get between 1.2～2 times of pressure sensor minimum range and be advisable.
3, determine the 3rd humidity discharging airduct parameter
The pipe range of the 3rd humidity discharging airduct must be greater than 0.2 meter, dust diameter D
3can be designed to and the first humidity discharging airduct D
1identical.
Each parts of stabilization control device carry out, after above-mentioned design, can dropping into normal use.
A control method for the stabilization control device of minute-pressure humidity discharging, control method comprises the steps:
Step 1: determine the pressure given value in the second humidity discharging airduct 11
According to P
2=(D
1/ D
2)
4p
1and D
1, D
2, P
1value try to achieve P
2, by P
2the result of calculating is made as P
0, upper and lower deviation range △ P is set, set-point is [P
0-△ P, P
0+ △ P];
Wherein, D
1be the first humidity discharging dust diameter, D
2be the second humidity discharging dust diameter, P
1be the pressure in the first humidity discharging airduct, P
2be the pressure in the second humidity discharging airduct;
Step 2: the probe of pressure sensor 3 is the pressure P of automatic detection the second humidity discharging airduct 11 inside constantly
2, and by pressure P
2feed back to master control set 4, master control set 4 is by P
2with set-point comparison;
Work as P
2be greater than P
0during+△ P, master control set 4 sends instruction to angle actuator 5, by angle actuator 5, turns self closing door 6 apertures down; Work as P
2be less than P
0during-△ P, master control set 4 sends instruction to angle actuator 5, by angle actuator 5, tunes up self closing door 6 apertures; Work as P
2be more than or equal to P
0-△ P and be less than or equal to P
0during+△ P, master control set 4 does not send instruction to angle actuator 5, keeps self closing door 6 apertures constant.
By above-mentioned control method, guarantee the pressure P in the second humidity discharging airduct
2be stabilized in [P
0-△ P, P
0+ △ P] in scope, reach the stable of process equipment production run, improve stable at quality of item.
△ P settings are 10pa.
The structure of pressure sensor, master control set, angle actuator, self closing door and operation principle are all prior aries, no longer launch herein to describe.
Embodiment 1
Now take leaf thread material feeding machine as example explanation the present invention.
Actual humidity discharging air quantity when leaf thread material feeding machine is normally produced is 1800m
3/ h.
As shown in Figure 1, 2, a stabilization control device for minute-pressure humidity discharging, stabilization control device comprises the first humidity discharging airduct 10, the second humidity discharging airduct 11, the 3rd humidity discharging airduct 13, humidity discharging house steward 2, driven fan 1, manual air door 9, condensation water collection funnel, condensation water collection pipe 12 and control system;
The first end of the first humidity discharging airduct 10 is connected with the discharging cover 7 of process equipment 8, the second end is connected with the first end of the second humidity discharging airduct 11, the second end of the second humidity discharging airduct 11 is connected with the 3rd humidity discharging airduct 13, the second end of the 3rd humidity discharging airduct 13 is connected with humidity discharging house steward 2, and one end of humidity discharging house steward 2 is connected with driven fan 1;
Control system comprises pressure sensor 3, master control set 4, angle actuator 5 and self closing door 6, self closing door 6 is arranged on the inside of the first humidity discharging airduct 10, pressure sensor 3 is arranged on the inside of the second humidity discharging airduct 11, and pressure sensor 3, master control set 4, angle actuator 5 and self closing door 6 are connected successively;
The epimere of the second humidity discharging airduct 11 is that inclined tube, hypomere are VERTICAL TUBE, inclined tube is connected with the 3rd humidity discharging airduct 13, the VERTICAL TUBE of the second humidity discharging airduct 11 and the 3rd humidity discharging airduct 13 shift to install, and the beeline between the upright side walls B of the VERTICAL TUBE of the second humidity discharging airduct 11 and the upright side walls A of the 3rd humidity discharging airduct 13 equals 20mm;
From the junction of the sidewall C on the top of the inclined tube of the second humidity discharging airduct 11 and the sidewall A of the 3rd humidity discharging airduct 13, the distance to downward-extension equals 15mm to the sidewall A of the 3rd humidity discharging airduct 13;
The first end of the 3rd humidity discharging airduct 13 is connected with the top of condensation water collection funnel, and the bottom of condensation water collection funnel is connected with condensation water collection pipe 12, and collecting pipe is directly discharged to the condensed water of collecting in the sewage network of workshop;
On the first humidity discharging airduct 10, the second humidity discharging airduct 11 and the 3rd humidity discharging airduct 13, be respectively arranged with air quantity or blast and detect mouth;
The first end of the first humidity discharging airduct 10 is connected with discharging cover 7, feed end humidity discharging cover, the discharge end humidity discharging cover of process equipment 8 respectively.
The parameter determining step of each parts of stabilization control device is as follows:
1, determine the first humidity discharging airduct parameter
The pipe range of the first humidity discharging airduct is 1 meter, gets V
1=10m/s,
Dust diameter
2, determine the second humidity discharging airduct parameter
The pipe range of the second humidity discharging airduct is 0.6 meter, and the minimum range of the pressure sensor of selecting is 1000pa, and getting P2 is 1300pa.The blast P recording when the moisture of process equipment can be discharged just completely smoothly
1=68pa.
By formula
Obtain D
2≈ 120(mm)
3, determine the 3rd humidity discharging airduct parameter
The pipe range of the 3rd humidity discharging airduct is: from centre position to the three humidity discharging airducts of junction of the 3rd humidity discharging airduct and the second humidity discharging airduct and the centre position of humidity discharging house steward's junction, approximately 1.5 meters, dust diameter D
3=D
1=250(mm).
Each parts of stabilization control device carry out, after above-mentioned design, can dropping into normal use.
A control method for the stabilization control device of minute-pressure humidity discharging, control method comprises the steps:
Step 1: determine the pressure given value in the second humidity discharging airduct 11
According to P
2=(D
1/ D
2)
4p
1and D
1, D
2, P
1value try to achieve P
2=(D
1/ D
2)
4p
1=(250/120)
4* 68 ≈ 1280 (pa), by P
2the result of calculating is made as P
0, upper and lower deviation range △ P settings are 10pa, set-point is [1270,1290];
Step 2: the probe of pressure sensor 3 is the pressure P of automatic detection the second humidity discharging airduct 11 inside constantly
2, and by pressure P
2feed back to master control set 4, master control set 4 is by P
2with set-point comparison;
Work as P
2while being greater than 1290pa, master control set 4 sends instruction to angle actuator 5, by angle actuator 5, turns self closing door 6 apertures down; Work as P
2while being less than 1270pa, master control set 4 sends instruction to angle actuator 5, by angle actuator 5, tunes up self closing door 6 apertures; Work as P
2when being more than or equal to 1270pa and being less than or equal to 1290pa, master control set 4 does not send instruction to angle actuator 5, keeps self closing door 6 apertures constant.
By above-mentioned control method, the pressure P in the second humidity discharging airduct
2be stabilized in [1270,1290] scope, reached the stable of process equipment production run, realized stablizing at quality of item.
By above-mentioned control device and control method, the humidity discharging air quantity (or blast) of leaf thread material feeding machine is controlled stable, and process equipment humidity discharging cover place negative pressure is basicly stable constant, greatly reduces the loss of tiny pipe tobacco and feed liquid; Follow-up line clogging phenomenon is stopped substantially, and the probe of pressure sensor can keep totally for a long time, effectively.The moisture content standard deviation of outlet cut tobacco is only 0.08, and outlet temperature standard deviation is only 0.13, has obviously improved the stable of leaf thread material feeding machine product processing quality.
The disclosed arbitrary technical scheme of the invention described above unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the present invention just discloses part numerical value to illustrate technical scheme of the present invention, and the above-mentioned numerical value of enumerating should not form the restriction to the invention protection domain.
Simultaneously, if the invention described above discloses or has related to parts or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can dismantle and be fixedly connected with (for example using bolt or screw to connect), also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously cannot adopt except integrally formed technique) by integral type structure (use casting technique is integrally formed to be created).
In addition, in the disclosed arbitrary technical scheme of the invention described above applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts provided by the invention can be both to be assembled by a plurality of independent parts, the produced separate part of the technique that also can be one of the forming.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present invention; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1. a stabilization control device for minute-pressure humidity discharging, is characterized in that: described stabilization control device comprises the first humidity discharging airduct, the second humidity discharging airduct, the 3rd humidity discharging airduct, humidity discharging house steward, driven fan and control system;
The first end of the first humidity discharging airduct is connected with the discharging cover of process equipment, the second end is connected with the first end of the second humidity discharging airduct, the second end of the second humidity discharging airduct is connected with the 3rd humidity discharging airduct, the second end of the 3rd humidity discharging airduct is connected with humidity discharging house steward, and one end of humidity discharging house steward is connected with driven fan;
Control system comprises pressure sensor, master control set, angle actuator and self closing door, self closing door is arranged on the inside of the first humidity discharging airduct, pressure sensor is arranged on the inside of the second humidity discharging airduct, and pressure sensor, master control set, angle actuator are connected successively with self closing door;
Pressure sensor is for gathering the pressure of the second humidity discharging airduct inside and pressure condition being fed back to master control set, and master control set sends instruction to angle actuator, regulates the aperture of self closing door by angle actuator.
2. stabilization control device according to claim 1, is characterized in that: described stabilization control device also comprises manual air door, and manual air door is arranged on the first humidity discharging airduct, and manual air door is arranged between the discharging cover of self closing door and process equipment.
3. stabilization control device according to claim 1, is characterized in that: the diameter of the first humidity discharging airduct is greater than the diameter of the second humidity discharging airduct.
4. stabilization control device according to claim 3, is characterized in that: the diameter of the 3rd humidity discharging airduct is greater than the diameter of the second humidity discharging airduct.
5. stabilization control device according to claim 1, it is characterized in that: the epimere of the second humidity discharging airduct is that inclined tube, hypomere are VERTICAL TUBE, inclined tube is connected with the 3rd humidity discharging airduct, the VERTICAL TUBE of the second humidity discharging airduct and the 3rd humidity discharging airduct shift to install, and the beeline between the upright side walls of the VERTICAL TUBE of the second humidity discharging airduct and the upright side walls of the 3rd humidity discharging airduct is more than or equal to 10mm, is less than or equal to 50mm.
6. stabilization control device according to claim 5, is characterized in that: the sidewall of the 3rd humidity discharging airduct is from the junction of the sidewall on the top of the inclined tube of the second humidity discharging airduct and the sidewall of the 3rd humidity discharging airduct to downward-extension.
7. stabilization control device according to claim 6, is characterized in that: from the junction of the sidewall on the top of the inclined tube of the second humidity discharging airduct and the sidewall of the 3rd humidity discharging airduct, the distance to downward-extension is more than or equal to 10mm, is less than or equal to 20mm the sidewall of the 3rd humidity discharging airduct.
8. stabilization control device according to claim 7, is characterized in that:
Described stabilization control device also comprises condensation water collection funnel and condensation water collection pipe, and the first end of the 3rd humidity discharging airduct is connected with the top of condensation water collection funnel, and the bottom of condensation water collection funnel is connected with condensation water collection pipe.
9. stabilization control device according to claim 1, is characterized in that: on the first humidity discharging airduct, the second humidity discharging airduct and the 3rd humidity discharging airduct, be respectively arranged with air quantity or blast and detect mouth.
10. a control method for the stabilization control device of the minute-pressure humidity discharging described in claim 1-9 any one, is characterized in that:
Described control method comprises the steps:
Step 1: determine the pressure given value in the second humidity discharging airduct
According to P
2=(D
1/ D
2)
4p
1and D
1, D
2, P
1value try to achieve P
2, by P
2the result of calculating is made as P
0, upper and lower deviation range △ P is set, set-point is [P
0-△ P, P
0+ △ P];
Wherein, D
1be the first humidity discharging dust diameter, D
2be the second humidity discharging dust diameter, P
1be the pressure in the first humidity discharging airduct, P
2be the pressure in the second humidity discharging airduct;
Step 2: the probe of pressure sensor is the pressure P of automatic detection the second humidity discharging airduct inside constantly
2, and by pressure P
2feed back to master control set, master control set is by P
2with set-point comparison;
Work as P
2be greater than P
0during+△ P, master control set sends instruction to angle actuator, by angle actuator, turns self closing door aperture down; Work as P
2be less than P
0during-△ P, master control set sends instruction to angle actuator, by angle actuator, tunes up self closing door aperture; Work as P
2be more than or equal to P
0-△ P and be less than or equal to P
0during+△ P, master control set does not send instruction to angle actuator, keeps self closing door aperture constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037975.1A CN103750529B (en) | 2014-01-27 | 2014-01-27 | The stabilization control device of a kind of minute-pressure humidity discharging and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410037975.1A CN103750529B (en) | 2014-01-27 | 2014-01-27 | The stabilization control device of a kind of minute-pressure humidity discharging and control method thereof |
Publications (2)
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|---|---|
| CN103750529A true CN103750529A (en) | 2014-04-30 |
| CN103750529B CN103750529B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410037975.1A Active CN103750529B (en) | 2014-01-27 | 2014-01-27 | The stabilization control device of a kind of minute-pressure humidity discharging and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163526A (en) * | 2018-08-31 | 2019-01-08 | 杭州电子科技大学 | A kind of filter cloth dehumidification control system |
| CN113558269A (en) * | 2020-04-29 | 2021-10-29 | 上海烟草集团有限责任公司 | Automatic moisture exhausting air door control system of airflow type cut tobacco dryer and control method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3429317A (en) * | 1963-11-18 | 1969-02-25 | Hans Koch | Method of conditioning tobacco |
| GB1435813A (en) * | 1972-08-18 | 1976-05-19 | Hauni Werke Koerber & Co Kg | Method and apparatus for humidifying tobacco |
| US4513759A (en) * | 1981-07-07 | 1985-04-30 | Hauni-Werke Korber & Co. Kg | Apparatus for expelling moisture from tobacco or the like |
| CN2631233Y (en) * | 2003-06-19 | 2004-08-11 | 龙岩卷烟厂 | Automatic controller for demoisture with constant airing volume |
| CN102106597A (en) * | 2011-01-08 | 2011-06-29 | 中国烟草总公司郑州烟草研究院 | Method and device for controlling moisture discharge of stable roller type shred dryer |
| CN202127807U (en) * | 2011-07-13 | 2012-02-01 | 浙江中烟工业有限责任公司 | Flavoring or charging concentrated moisture eliminating device capable of improving quality of cut tobacco |
| CN103284308A (en) * | 2013-05-24 | 2013-09-11 | 湖南中烟工业有限责任公司 | Energy-saving method and device for controlling moisture discharging of roller-type cut-tobacco dryer |
| CN203274201U (en) * | 2013-05-31 | 2013-11-06 | 广西中烟工业有限责任公司 | Device capable of preventing condensate water from flowing backwards for moisture removing pipe |
| CN103519339A (en) * | 2013-10-14 | 2014-01-22 | 福建中烟工业有限责任公司 | Method for controlling stable tobacco flavoring roller moisture removal |
| CN203709241U (en) * | 2014-01-27 | 2014-07-16 | 厦门烟草工业有限责任公司 | Stable control device for micro-pressure moisture removal |
-
2014
- 2014-01-27 CN CN201410037975.1A patent/CN103750529B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3429317A (en) * | 1963-11-18 | 1969-02-25 | Hans Koch | Method of conditioning tobacco |
| GB1435813A (en) * | 1972-08-18 | 1976-05-19 | Hauni Werke Koerber & Co Kg | Method and apparatus for humidifying tobacco |
| US4513759A (en) * | 1981-07-07 | 1985-04-30 | Hauni-Werke Korber & Co. Kg | Apparatus for expelling moisture from tobacco or the like |
| CN2631233Y (en) * | 2003-06-19 | 2004-08-11 | 龙岩卷烟厂 | Automatic controller for demoisture with constant airing volume |
| CN102106597A (en) * | 2011-01-08 | 2011-06-29 | 中国烟草总公司郑州烟草研究院 | Method and device for controlling moisture discharge of stable roller type shred dryer |
| CN202127807U (en) * | 2011-07-13 | 2012-02-01 | 浙江中烟工业有限责任公司 | Flavoring or charging concentrated moisture eliminating device capable of improving quality of cut tobacco |
| CN103284308A (en) * | 2013-05-24 | 2013-09-11 | 湖南中烟工业有限责任公司 | Energy-saving method and device for controlling moisture discharging of roller-type cut-tobacco dryer |
| CN203274201U (en) * | 2013-05-31 | 2013-11-06 | 广西中烟工业有限责任公司 | Device capable of preventing condensate water from flowing backwards for moisture removing pipe |
| CN103519339A (en) * | 2013-10-14 | 2014-01-22 | 福建中烟工业有限责任公司 | Method for controlling stable tobacco flavoring roller moisture removal |
| CN203709241U (en) * | 2014-01-27 | 2014-07-16 | 厦门烟草工业有限责任公司 | Stable control device for micro-pressure moisture removal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163526A (en) * | 2018-08-31 | 2019-01-08 | 杭州电子科技大学 | A kind of filter cloth dehumidification control system |
| CN113558269A (en) * | 2020-04-29 | 2021-10-29 | 上海烟草集团有限责任公司 | Automatic moisture exhausting air door control system of airflow type cut tobacco dryer and control method thereof |
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|---|---|
| CN103750529B (en) | 2016-06-15 |
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