CN103630501B - A kind of paper pulp kappa number analyzer and control method thereof fast - Google Patents
A kind of paper pulp kappa number analyzer and control method thereof fast Download PDFInfo
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- CN103630501B CN103630501B CN201310567506.6A CN201310567506A CN103630501B CN 103630501 B CN103630501 B CN 103630501B CN 201310567506 A CN201310567506 A CN 201310567506A CN 103630501 B CN103630501 B CN 103630501B
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Abstract
The invention discloses a kind of paper pulp kappa number analyzer and control method thereof fast, comprise reaction tank, communicate with reaction tank and identical three liquid feeding unit of structure and carry the magnetic stirring apparatus of reaction tank; Also comprise stepper motor, the dragging track be connected with stepper motor, the support being located at slide block on dragging track and bound bit switch, being fixedly connected with slide block; Also comprise cuvette, waste liquid pool, peristaltic pump, liquid can be extracted in waste liquid pool by reaction tank through cuvette by peristaltic pump; Also comprise light source, photoelectric conversion device, data presentation device, the light that light source sends, through cuvette, is received by photoelectric conversion device, is changed and flow to single-chip microcomputer; Can carry out self-inspection after analyzer powers on, to guarantee to be in normal original state, preheating is carried out in driving power luminescence simultaneously; Before formal detection testing sample, first need carry out button blank, survey end liquid, mark sample operates, then detect testing sample; After experiment terminates, cleaning device.
Description
Technical field
The present invention relates to the mensuration of paper pulp kappa number in pulping and papermaking processes, particularly relate to a kind of paper pulp kappa number analyzer and control method thereof fast.
Background technology
Paper pulp kappa number is an important controling parameters in pulping process, is also the foundation that following bleaching technique adds bleaching agent consumption simultaneously.Measure the Kappa number not floating paper pulp quickly and accurately and will contribute to understanding in time the boiling degree of raw material, thus conditions of cooking is adjusted accordingly.This produces with optimization slurrying, that is: improve raw-material utilization factor, the quality ensureing paper pulp, energy-saving and emission-reduction, have very important realistic meaning.At present, the method of the mensuration paper pulp kappa number generally used remains traditional titrimetry (TAPPI-T236, SCAN-C1:77, ISO302), these assay methods not only complex steps, consuming time, and the impact of the human factors such as measurement result is subject to that titration end-point judges, experimental implementation skill level and sequence of operation.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming prior art, a kind of structure is simple, be easy to operate control quick paper pulp kappa number analyzer and control method thereof are provided.
The present invention is achieved through the following technical solutions:
A kind of paper pulp kappa number analyzer fast, comprise reaction tank 2, communicate with reaction tank 2 and identical three liquid feeding unit of structure and carry the magnetic stirring apparatus 9 of reaction tank 2, these three liquid feeding unit are divided into the first liquid feeding unit 11, second liquid feeding unit 12, the 3rd liquid feeding unit 13; In these three liquid feeding unit, distilled water, KMnO are housed respectively
4solution, H
2sO
4solution; The stirring rotator 10 of described magnetic stirring apparatus 9 is placed in reaction tank 2;
Described analyzer also comprises: stepper motor 1, the dragging track 3 be connected with stepper motor 1, the slide block 4 be located on dragging track 3, the support 7 be fixedly connected with slide block 4, the two ends up and down of described dragging track 3 are respectively equipped with upper limit position switch 5 and lower position switch 6, the vertical component of described support 7 and the axle of reaction tank 2 are on the same line, support 7 is for the sample plug 8 of fixing carrying pulp sample, described sample plug 8 is cast, with one deck fine-structure mesh, its diameter is identical with the bore of reaction tank 8;
Described analyzer also comprises: cuvette 15, waste liquid pool 16, peristaltic pump 14, and wherein the lower end interface of cuvette 15 is by liquid communication pipeline coupled reaction pond 2, and upper end interface connects waste liquid pool 16 by liquid communication pipeline; Peristaltic pump 14 provides the power of liquid flow, is extracted in waste liquid pool 16 by liquid by reaction tank 2 through cuvette 15, and described cuvette 15 is floating cuvette, and its lower end interface is liquid inlet, and upper end interface is liquid outlet;
Described analyzer also comprises: light source 17, photoelectric conversion device 18, data presentation device 19, the light that light source 17 sends passes through fiber optic conduction, through cuvette 15, received by photoelectric conversion device 18, after amplifying, changing, flow to single-chip microcomputer, single-chip microcomputer processes data and is presented on data presentation device 19;
Described analyzer also comprises: control circui template, adopts single-chip microcomputer as central processing unit; Be electrically connected with liquid feeding unit, magnetic stirring apparatus 9, stepper motor 1, upper limit position switch 5, lower position switch 6, peristaltic pump 14, light source 17, photoelectric conversion device 18, data presentation device 19 by the control circuit of control circui template.
The control method of above-mentioned quick paper pulp kappa number analyzer, comprises the following steps:
S1. press the blank button of button, single-chip microcomputer starts distilled water refill unit 11, in reaction tank, injects distilled water after receiving button blank signal;
S2. after injecting distilled water, the first liquid feeding unit 11 is closed automatically, and feeds back to single-chip microcomputer, and then single-chip microcomputer starts the slow shelves of peristaltic pump 14;
S3. peristaltic pump 14 opens successful signal feedback to single-chip microcomputer, and single-chip microcomputer starts timing, and n1 reads A second afterwards automatically
water;
S4. after single-chip microcomputer reads data success, start the fast shelves of peristaltic pump 14, after peristaltic pump 14 successfully starts, will complete signal feedback be started to single-chip microcomputer;
S5. single-chip microcomputer is from receiving beginning timing feedback signal, and n2 closes peristaltic pump 14 after second, and will be closed into function signal and feed back to single-chip microcomputer, detains blank pilot lamp bright, to show that button is blank complete simultaneously;
S6. press and survey end liquid button, single-chip microcomputer is to KMnO is housed
4second liquid feeding unit 12 of solution sends enabling signal, and the second liquid feeding unit 12 starts;
S7., after injecting KMnO4 solution, the second liquid feeding unit 12 is automatically closed and shutdown signal is fed back to single-chip microcomputer, and then single-chip microcomputer starts magnetic stirring apparatus 9;
S8. magnetic stirring apparatus 9 starts successfully, sends feedback signal to single-chip microcomputer, and then rare H is equipped with in single-chip microcomputer startup
2sO
43rd liquid feeding unit 13 of solution;
S9. H is injected
2sO
4after solution, the 3rd liquid feeding unit 13 is automatically closed and feeds back to single-chip microcomputer, and single-chip microcomputer starts the slow shelves of peristaltic pump 14 subsequently;
S10., after single-chip microcomputer receives the message of peristaltic pump 14 success startup, start timing, timing n1 reads A second afterwards automatically
early;
S11., after single-chip microcomputer reads data success, peristaltic pump 14 is closed; Peristaltic pump 14 will close successful signal feedback to single-chip microcomputer, survey end liquid pilot lamp bright simultaneously, complete to show survey end liquid;
S12., after the sample plug 8 carrying the good standard specimen of pre-service being fixed, press mark sample button, single-chip microcomputer can, the information that please input standard specimen Kappa number and oven-dry weight, output on display screen 19;
S13. by prompting requirement, after successfully inputting desired data, single-chip microcomputer sends enabling signal to stepper motor 1, and stepper motor 1 starts, and band movable slider 4 moves downward;
S14. stop when stepper motor 1 moves downwardly to touching lower position switch 6, and stopping pass signal being fed back to single-chip microcomputer;
S15. timing from single-chip microcomputer receives when stepper motor 1 stops at the feedback information of lower position switch 6, after n3 second, single-chip microcomputer sends enabling signal to stepper motor 1 again, and stepper motor 1 starts rear band slide block 4 and moves upward;
When stepper motor 1 moves up to touching upper limit position switch 5 only, and stop signal is fed back to single-chip microcomputer S16.;
S17., after single-chip microcomputer receives feedback signal, start the slow shelves of peristaltic pump 14, peristaltic pump 14 starts, and by the signal feedback of success startup to single-chip microcomputer;
S18. single-chip microcomputer timing from receiving after this feedback signal, n1 reads A second afterwards automatically
late;
S19., after successfully reading data, single-chip microcomputer starts the fast shelves of peristaltic pump 14, and peristaltic pump 14 starts, and by the signal feedback of success startup to single-chip microcomputer;
S20. receive from single-chip microcomputer the feedback signal beginning timing that peristaltic pump 14 successfully starts fast shelves, after n2 second, single-chip microcomputer sends enabling signal to the first liquid feeding unit 11 that distilled water is housed, and the first liquid feeding unit 11 is opened;
S21., after injecting distilled water, the first liquid feeding unit 11 is closed automatically, and feeds back to single-chip microcomputer;
S22. single-chip microcomputer timing from receiving after this feedback signal, n4 second, backward peristaltic pump 14 sent shutdown signal, and peristaltic pump 14 is closed, and shutdown signal is fed back to single-chip microcomputer;
S23. after single-chip microcomputer learns that peristaltic pump 14 is successfully closed, send shutdown signal to magnetic stirring apparatus 9, magnetic stirring apparatus 9 cuts out, and mark sample pilot lamp is bright simultaneously, has measured complete with indicating sample;
S24. press " starting to detect " button, information that single-chip microcomputer can export " please input the oven-dry weight of institute's test sample product " is on display screen 19;
S25. instrument will repeat above-mentioned S13 ~ S22 step;
S26., after single-chip microcomputer acquisition peristaltic pump 14 is successfully closed, send shutdown signal to magnetic stirring apparatus 9, magnetic stirring apparatus 9 cuts out, and starts to detect pilot lamp bright simultaneously, and to show, test sample product have measured complete, and the Kappa number of sample can be presented on display screen 19;
S27. press " cleaning button ", single-chip microcomputer starts the slow shelves of peristaltic pump 14;
S28. press " cleaning terminates " button, single-chip microcomputer cuts out peristaltic pump 14.
Paper pulp kappa number represents the content remaining in lignin in paper pulp and other reducing substanceses, and its measuring principle utilizes the reductive organic matters such as lignin and oxidant potassium permanganate (KMnO
4) reaction, the amount measuring institute's energy oxygen consumed agent under given conditions determines the Kappa number of paper pulp.By the change measuring absorbance, this instrument according to ultraviolet spectrophotometry and some orthosises, determines that potassium permanganate amount that paper pulp consumes records the Kappa number of paper pulp based on this measuring principle.The Kappa number (Ks) of standing paste sample is recorded by TAPPI standard, and the calculating formula of spectrophotometry Kappa number is:
In formula: K is the Kappa number of paper pulp to be measured; W is reaction oven dry stock quality, g; A is the amount adding potassium permanganate before paper pulp, mL; A
0and A
ebe respectively and add paper pulp absorbance that is front and solution after reacting.
Do relative standard with the paper pulp of known Kappa number, the calculating formula of paper pulp kappa number to be measured is:
In formula: K
s, w
s,
the absorbance of solution after the Kappa number of standing paste sample, absolute dry mass and reaction respectively.
From formula (2), as long as do reference with the paper pulp sample of a known Kappa number (being obtained by TAPPI standard method), measure known slurry sample and unknown absorbance (wavelength is at 546nm place) of starching after sample and KMnO4 solution reaction under the same conditions, just can calculate the Kappa number of unknown slurry sample.
Relative to prior art, tool of the present invention has the following advantages and beneficial effect:
Intelligence degree of the present invention is high, can realize automatic liquid-feeding, automatically add testing sample, automatically control reaction end, and reading detects data automatically, automatically processes, preserves, shows data, automatically clean instrument.This device based on spectrophotometry, by suitably improve reaction medium acidity and in binding soln the colorimetric analysis of potassium permanganate concentration determine the Kappa number of testing sample, thus the mensuration making Kappa number more science, fast and accurately.
Accompanying drawing explanation
Fig. 1 is the structural representation of the quick paper pulp kappa number analyzer of the present invention;
Fig. 2 is control circui template electrical equipment block diagram.
Fig. 3 is the principle of work block diagram of this analyzer.
Fig. 4 is the main-process stream block diagram of analyzer.
Embodiment
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 1, the quick paper pulp kappa number analyzer of the present invention, comprise reaction tank 2, communicate with reaction tank 2 and identical three liquid feeding unit of structure and carry the magnetic stirring apparatus 9 of reaction tank 2, these three liquid feeding unit are divided into the first liquid feeding unit 11, second liquid feeding unit 12, the 3rd liquid feeding unit 13; In these three liquid feeding unit, distilled water, KMnO are housed respectively
4solution, H
2sO
4solution; And every liquid feeding once all corresponding corresponding volume, what these three liquid feeding unit had a sequential adds above-mentioned three kinds of liquid in reaction tank 2, and wherein distilled water is used for carrying out blank and cleaning device, KMnO
4solution and H
2sO
4solution is for allocating reactant liquor, and the stirring rotator 10 of described magnetic stirring apparatus 9 is placed in reaction tank 2, the effect of magnetic agitation mainly make reaction in reaction tank evenly, described reaction tank 2 be cylindrical, is mainly used in carrying pulp sample and acid KMnO
4the chemical reaction of solution;
Described analyzer also comprises: stepper motor 1, the dragging track 3 be connected with stepper motor 1, be located at the slide block 4 on dragging track 3, the support 7 be fixedly connected with slide block 4, the two ends up and down of described dragging track 3 are respectively equipped with upper limit position switch 5 and lower position switch 6, the vertical component of described support 7 and the axle of reaction tank 2 are on the same line, support 7 is mainly used for the sample plug 8 of fixing carrying pulp sample, described sample plug 8 is cast, with one deck fine-structure mesh, its diameter is identical with the bore of reaction tank 2, can be very identical navigate within reaction tank 2, stepper motor 1 is for delivering in reaction tank 2 by the sample plug 8 of carrying sample, again sample plug 8 is proposed after question response certain hour,
Described analyzer also comprises: cuvette 15, waste liquid pool 16, peristaltic pump 14, and wherein the lower end interface of cuvette 15 is by liquid communication pipeline coupled reaction pond 2, and upper end interface connects waste liquid pool 16 by liquid communication pipeline; Peristaltic pump 14 provides the power of liquid flow, is extracted in waste liquid pool 16 by liquid by reaction tank 2 through cuvette 15, and described cuvette 15 is floating cuvette, and its lower end interface is liquid inlet, and upper end interface is liquid outlet; Described peristaltic pump 14 is the peristaltic pump of variable-ratio, is fast shelves and slow shelves here;
Described analyzer also comprises: light source 17, photoelectric conversion device 18, data presentation device 19, the light that light source 17 sends passes through fiber optic conduction, through cuvette 15, received by photoelectric conversion device 18, through amplifying, single-chip microcomputer is flowed to after conversion, single-chip microcomputer processes data and is presented on data presentation device 19, described light source 17 need provide the wavelength of 546nm, such as halogen tungsten lamp, light emitting diode, described photoelectric conversion device 18 can change light signal into electric signal, and can amplify it, analog to digital conversion, then single-chip microcomputer is exported to, photoelectric conversion device 18 can use photoelectric cell parts, all-fiber three node corrective network device or spectrometer, described data presentation device 19, can show, record, preserve data,
Described analyzer also comprises: control circui template, adopts single-chip microcomputer as central processing unit; Be electrically connected with liquid feeding unit, magnetic stirring apparatus 9, stepper motor 1, upper limit position switch 5, lower position switch 6, peristaltic pump 14, light source 17, photoelectric conversion device 18, data presentation device 19 by the control circuit of control circui template.
As shown in Figure 2, single-chip microcomputer is as central processing unit, and controlling three liquid feeding unit by the control circuit of three liquid feeding unit has sequential to add the respective liquid of certain volume; Control it by the control circuit of magnetic stirring apparatus start and close; Carry out Driving Stepping Motor and control step motor positive and inverse by the control circuit of stepper motor, and control start-stop position through limit switch; Control peristaltic pump by the control circuit of peristaltic pump open fast, slow shelves and close peristaltic pump; Luminous by the control circuit driving light source of light source, light signal is converted to electric signal through after cuvette through photoelectric conversion device by light, and electric signal is read by single-chip microcomputer after amplification, digitizing; Single-chip microcomputer to after data processing, by its output display on display screen.
As shown in Figure 3, first measuring the absorbance of the distilled water for being equipped with reactant liquor, secondly detecting the absorbance of the acid permanganate soln before reacting with pulp sample, finally measure the absorbance of reactant liquor after reacting with pulp sample.The change of absorbance can be calculated thus, determine by this change the potassium permanganate amount that paper pulp consumes and record the Kappa number of paper pulp.When calculating institute's test sample product Kappa number, also have employed some orthosises, doing relative standard with the paper pulp of known Kappa number, demarcating the Kappa number of surveyed paper pulp.
Fig. 4 shows the main-process stream of this analyzer:
(1) after powering on to analyzer, analyzer can carry out self-inspection, determines to lay oneself open to normal original state, and preheating is carried out in driving power luminescence simultaneously;
(2) before formal detection testing sample, first need carry out detaining blank operation, secondly survey end liquid, mark sample again;
(3) testing sample is detected, when detecting multiple testing sample, the operation capable of circulation of this process;
(4) in time testing complete, available distilled water or first clean with distilled water again with acid potassium iodide;
(5) clean complete, powered-down so far tests end.
Apply the control method of above-mentioned quick paper pulp kappa number analyzer, realize especially by following step:
S1. press the blank button of button, single-chip microcomputer starts distilled water refill unit 11, in reaction tank, injects distilled water after receiving button blank signal;
S2. after injecting the distilled water of certain volume, the first liquid feeding unit 11 is closed automatically, and feeds back to single-chip microcomputer, and then single-chip microcomputer starts the slow shelves of peristaltic pump 14;
S3. peristaltic pump 14 opens successful signal feedback to single-chip microcomputer, and single-chip microcomputer starts timing, and n1 reads A second afterwards automatically
water;
S4. after single-chip microcomputer reads data success, start the fast shelves of peristaltic pump 14, after peristaltic pump 14 successfully starts, will complete signal feedback be started to single-chip microcomputer;
S5. single-chip microcomputer is from receiving beginning timing feedback signal, and n2 closes peristaltic pump 14 after second, and will be closed into function signal and feed back to single-chip microcomputer, detains blank pilot lamp bright, to show that button is blank complete simultaneously;
S6. press and survey end liquid button, single-chip microcomputer is to KMnO is housed
4second liquid feeding unit 12 of solution sends enabling signal, and the second liquid feeding unit 12 starts;
S7. the KMnO of certain volume is injected
4after solution, the second liquid feeding unit 12 is automatically closed and shutdown signal is fed back to single-chip microcomputer, and then single-chip microcomputer starts magnetic stirring apparatus 9;
S8. magnetic stirring apparatus 9 starts successfully, sends feedback signal to single-chip microcomputer, and then rare H is equipped with in single-chip microcomputer startup
2sO
43rd liquid feeding unit 13 of solution;
S9. the H2SO of certain volume is injected
4after solution, the 3rd liquid feeding unit 13 is automatically closed and feeds back to single-chip microcomputer, and single-chip microcomputer starts the slow shelves of peristaltic pump 14 subsequently;
S10., after single-chip microcomputer receives the message of peristaltic pump 14 success startup, start timing, timing n1 reads A second afterwards automatically
early;
S11., after single-chip microcomputer reads data success, peristaltic pump 14 is closed; Peristaltic pump 14 will close successful signal feedback to single-chip microcomputer, survey end liquid pilot lamp bright simultaneously, complete to show survey end liquid;
S12., after the sample plug 8 carrying the good standard specimen of pre-service being fixed, press mark sample button, single-chip microcomputer can, the information that please input standard specimen Kappa number and oven-dry weight, output on display screen 19;
S13. by prompting requirement, after successfully inputting desired data, single-chip microcomputer sends enabling signal to stepper motor 1, and stepper motor 1 starts, and band movable slider 4 moves downward;
S14. stop when stepper motor 1 moves downwardly to touching lower position switch 6, and stopping pass signal being fed back to single-chip microcomputer;
S15. timing from single-chip microcomputer receives when stepper motor 1 stops at the feedback information of lower position switch 6, after n3 second, single-chip microcomputer sends enabling signal to stepper motor 1 again, and stepper motor 1 starts rear band slide block 4 and moves upward;
When stepper motor 1 moves up to touching upper limit position switch 5 only, and stop signal is fed back to single-chip microcomputer S16.;
S17., after single-chip microcomputer receives feedback signal, start the slow shelves of peristaltic pump 14, peristaltic pump 14 starts, and by the signal feedback of success startup to single-chip microcomputer;
S18. single-chip microcomputer timing from receiving after this feedback signal, n1 reads A second afterwards automatically
late;
S19., after successfully reading data, single-chip microcomputer starts the fast shelves of peristaltic pump 14, and peristaltic pump 14 starts, and by the signal feedback of success startup to single-chip microcomputer;
S20. receive from single-chip microcomputer the feedback signal beginning timing that peristaltic pump 14 successfully starts fast shelves, after n2 second, single-chip microcomputer sends enabling signal to the first liquid feeding unit 11 that distilled water is housed, and the first liquid feeding unit 11 is opened;
S21., after injecting the distilled water of certain volume, the first liquid feeding unit 11 is closed automatically, and feeds back to single-chip microcomputer;
S22. single-chip microcomputer timing from receiving after this feedback signal, n4 second, backward peristaltic pump 14 sent shutdown signal, and peristaltic pump 14 is closed, and shutdown signal is fed back to single-chip microcomputer;
S23. after single-chip microcomputer learns that peristaltic pump 14 is successfully closed, send shutdown signal to magnetic stirring apparatus 9, magnetic stirring apparatus 9 cuts out, and mark sample pilot lamp is bright simultaneously, has measured complete with indicating sample;
S24. press " starting to detect " button, information that single-chip microcomputer can export " please input the oven-dry weight of institute's test sample product " is on display screen 19;
S25. instrument will repeat above-mentioned S13 ~ S22 step;
S26., after single-chip microcomputer acquisition peristaltic pump 14 is successfully closed, send shutdown signal to magnetic stirring apparatus 9, magnetic stirring apparatus 9 cuts out, and starts to detect pilot lamp bright simultaneously, and to show, test sample product have measured complete, and the Kappa number of sample can be presented on display screen 19;
S27. press " cleaning button ", single-chip microcomputer starts the slow shelves of peristaltic pump 14;
S28. press " cleaning terminates " button, single-chip microcomputer cuts out peristaltic pump 14.
Just the present invention can be realized preferably as mentioned above.
Embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (2)
1. a quick paper pulp kappa number analyzer, it is characterized in that: comprise reaction tank (2), communicate with reaction tank (2) and identical three liquid feeding unit of structure and carry the magnetic stirring apparatus (9) of reaction tank (2), these three liquid feeding unit are respectively the first liquid feeding unit (11), the second liquid feeding unit (12), the 3rd liquid feeding unit (13); In these three liquid feeding unit, distilled water, KMnO are housed respectively
4solution, H
2sO
4solution; The stirring rotator (10) of described magnetic stirring apparatus (9) is placed in reaction tank (2);
Described analyzer also comprises: stepper motor (1), the dragging track (3) be connected with stepper motor (1), be located at the slide block (4) on dragging track (3), the support (7) be fixedly connected with slide block (4), the two ends up and down of described dragging track (3) are respectively equipped with upper limit position switch (5) and lower position switch (6), the vertical component of described support (7) and the axle of reaction tank (2) are on the same line, support (7) is for the sample plug (8) of fixing carrying pulp sample, described sample plug (8) is cast, with one deck fine-structure mesh, its diameter is identical with the bore of reaction tank (2),
Described analyzer also comprises: cuvette (15), waste liquid pool (16), peristaltic pump (14), wherein the lower end interface of cuvette (15) is by liquid communication pipeline coupled reaction pond (2), and upper end interface connects waste liquid pool (16) by liquid communication pipeline; Peristaltic pump (14) provides the power of liquid flow, liquid is extracted in waste liquid pool (16) by reaction tank (2) through cuvette (15), described cuvette (15) is floating cuvette, its lower end interface is liquid inlet, and upper end interface is liquid outlet;
Described analyzer also comprises: light source (17), photoelectric conversion device (18), display screen (19), the light that light source (17) sends passes through fiber optic conduction, through cuvette (15), received by photoelectric conversion device (18), after amplifying, changing, flow to single-chip microcomputer, single-chip microcomputer processes data and is presented on display screen (19);
Described analyzer also comprises: control circui template, adopts single-chip microcomputer as central processing unit; Be electrically connected with liquid feeding unit, magnetic stirring apparatus (9), stepper motor (1), upper limit position switch (5), lower position switch (6), peristaltic pump (14), light source (17), photoelectric conversion device (18), display screen (19) by the control circuit of control circui template.
2. application rights requires a control method for paper pulp kappa number analyzer fast described in 1, it is characterized in that comprising the following steps:
S1. press the blank button of button, single-chip microcomputer starts the first liquid feeding unit (11), in reaction tank, injects distilled water after receiving button blank signal;
S2. after injecting distilled water, the first liquid feeding unit (11) is closed automatically, and feeds back to single-chip microcomputer, and then single-chip microcomputer starts the slow shelves of peristaltic pump (14);
S3. peristaltic pump (14) opens successful signal feedback to single-chip microcomputer, and single-chip microcomputer starts timing, and n1 reads A second afterwards automatically
water;
S4. after single-chip microcomputer reads data success, start the fast shelves of peristaltic pump (14), after peristaltic pump (14) successfully starts, will complete signal feedback be started to single-chip microcomputer;
S5. single-chip microcomputer is from receiving beginning timing feedback signal, and n2 closes peristaltic pump (14) after second, and will be closed into function signal and feed back to single-chip microcomputer, detains blank pilot lamp bright, to show that button is blank complete simultaneously;
S6. press and survey end liquid button, single-chip microcomputer is to KMnO is housed
4second liquid feeding unit (12) of solution sends enabling signal, and the second liquid feeding unit (12) starts;
S7. KMnO is injected
4after solution, the second liquid feeding unit (12) is automatically closed and shutdown signal is fed back to single-chip microcomputer, and then single-chip microcomputer starts magnetic stirring apparatus (9);
S8. magnetic stirring apparatus (9) starts successfully, sends feedback signal to single-chip microcomputer, and then H is equipped with in single-chip microcomputer startup
2sO
43rd liquid feeding unit (13) of solution;
S9. rare H is injected
2sO
4after solution, the 3rd liquid feeding unit (13) is automatically closed and feeds back to single-chip microcomputer, and single-chip microcomputer starts the slow shelves of peristaltic pump (14) subsequently;
S10., after single-chip microcomputer receives the message of peristaltic pump (14) success startup, start timing, timing n1 reads A second afterwards automatically
early;
S11., after single-chip microcomputer reads data success, peristaltic pump (14) is closed; Peristaltic pump (14) will close successful signal feedback to single-chip microcomputer, survey end liquid pilot lamp bright simultaneously, complete to show survey end liquid;
S12., after the sample plug (8) carrying the good standard specimen of pre-service being fixed, press mark sample button, single-chip microcomputer can, the information that please input standard specimen Kappa number and oven-dry weight, output on display screen (19);
S13. by prompting requirement, after successfully inputting desired data, single-chip microcomputer sends enabling signal to stepper motor (1), and stepper motor (1) starts, and band movable slider (4) moves downward;
S14. stop when stepper motor (1) band movable slider (4) moves downwardly to touching lower position switch (6), and stopping pass signal being fed back to single-chip microcomputer;
S15. timing from single-chip microcomputer receives when stepper motor (1) band movable slider (4) stops at the feedback information of lower position switch (6), after n3 second, single-chip microcomputer sends enabling signal to stepper motor (1) again, and stepper motor (1) is with slide block (4) to move upward after starting;
When stepper motor (1) band movable slider (4) moves up to touching upper limit position switch (5) only, and stop signal is fed back to single-chip microcomputer S16.;
S17., after single-chip microcomputer receives feedback signal, start the slow shelves of peristaltic pump (14), peristaltic pump (14) starts, and by the signal feedback of success startup to single-chip microcomputer;
S18. single-chip microcomputer timing from receiving after feedback signal, n1 reads A second afterwards automatically
late;
S19., after successfully reading data, single-chip microcomputer starts the fast shelves of peristaltic pump (14), and peristaltic pump (14) starts, and by the successful signal feedback started to single-chip microcomputer;
S20. receive from single-chip microcomputer the feedback signal beginning timing that peristaltic pump (14) successfully starts fast shelves, after n2 second, single-chip microcomputer sends enabling signal to the first liquid feeding unit (11) that distilled water is housed, and the first liquid feeding unit (11) is opened;
S21., after injecting distilled water, the first liquid feeding unit (11) is closed automatically, and feeds back to single-chip microcomputer;
S22. single-chip microcomputer timing from receiving after feedback signal, backward peristaltic pump n4 second (14) sends shutdown signal, and peristaltic pump (14) is closed, and shutdown signal is fed back to single-chip microcomputer;
S23. after single-chip microcomputer learns that peristaltic pump (14) is successfully closed, send shutdown signal to magnetic stirring apparatus (9), magnetic stirring apparatus (9) cuts out, and mark sample pilot lamp is bright simultaneously, has measured complete with indicating sample;
S24. press " starting to detect " button, information that single-chip microcomputer can export " please input the oven-dry weight of institute's test sample product " is on display screen (19);
S25. instrument will repeat above-mentioned S13 ~ S22 step;
S26. after single-chip microcomputer learns that peristaltic pump (14) is successfully closed, shutdown signal is sent to magnetic stirring apparatus (9), magnetic stirring apparatus (9) cuts out, start to detect pilot lamp bright simultaneously, to show, test sample product have measured complete, and the Kappa number of sample can be presented on display screen (19);
S27. press " cleaning button ", single-chip microcomputer starts the slow shelves of peristaltic pump (14);
S28. press " cleaning terminates " button, single-chip microcomputer cuts out peristaltic pump (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310567506.6A CN103630501B (en) | 2013-11-14 | 2013-11-14 | A kind of paper pulp kappa number analyzer and control method thereof fast |
Applications Claiming Priority (1)
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| CN104897588A (en) * | 2015-05-26 | 2015-09-09 | 华南理工大学 | Instrument for rapidly measuring content of alkali-resistant cellulose of high-whiteness chemical pulp and control method |
| CN104950857A (en) * | 2015-06-24 | 2015-09-30 | 黄红林 | Pulping cooking control method based on soft sensing |
| CN106644969A (en) * | 2016-09-19 | 2017-05-10 | 华南理工大学 | In-situ determination method of carbohydrate dissolution quantity of chemical pulp in cold alkali impregnation process |
| CN107607596B (en) * | 2017-08-08 | 2019-09-06 | 福建农林大学 | A kind of online test method and device of the sulfate pulping process paper pulp kappa number based on flow analysis |
| CN107589158B (en) * | 2017-08-08 | 2019-09-06 | 福建农林大学 | A kind of online test method and device of the sulfate pulping process paper pulp kappa number based on double electrochemical sensors |
| CN109827919A (en) * | 2019-04-15 | 2019-05-31 | 嘉兴学院 | A kind of Quick testing instrument and its detection method of chroming waste liquor trivalent chromium content |
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