CN203310749U - Concentration online detector for crystallization process of sucrose - Google Patents
Concentration online detector for crystallization process of sucrose Download PDFInfo
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- CN203310749U CN203310749U CN201320328763XU CN201320328763U CN203310749U CN 203310749 U CN203310749 U CN 203310749U CN 201320328763X U CN201320328763X U CN 201320328763XU CN 201320328763 U CN201320328763 U CN 201320328763U CN 203310749 U CN203310749 U CN 203310749U
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- massecuite
- concentration
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Abstract
The utility model discloses a concentration online detector for crystallization process of sucrose. The concentration online detector comprises an online refractometer and a transporting stirrer arranged on the side wall of a sucrose boiling bowl, wherein a prism measuring end of the online refractometer extends into the sucrose boiling bowl after penetrating through the side wall of the sucrose boiling bowl, the massecuite in the deep of the sucrose boiling bowl is transported to the refractometer by the transporting stirrer, the prism measuring end is scoured, and the replacement of the thick massecuite can be accelerated, so that the synchronization parameters are kept between the massecuite mother liquor concentration at the measuring end of the refractometer on the edge of the sucrose boiling bowl and the massecuite mother liquor concentration within a sucrose boiling bowl main body region, the problem of measurement error caused by the deposition of the impurity and the crystal at the prism measuring end can be solved, and the online refractometer can timely and exactly reflect the change condition of the massecuite mother liquor concentration in the sucrose boiling bowl. Meanwhile, the transporting stirrer drives the motor current to reflect the massecuite concentration required by controlling the crystallization of the sucrose, so that the online detection of the massecuite mother liquor concentration and the massecuite concentration when the sucrose is crystallized can be realized. The concentration online detector is used in the technical field of the sucrose production.
Description
Technical field
The utility model relates to the sugar industry technical field, particularly concentration detection apparatus in a kind of boiling pan sugar crystal process.
Background technology
The white granulated sugar product eaten for people is that sucrose solution is condensed into after syrup at the boiling pan intercrystalline, through hydro-extractor, separating drying again forms, crystallization of sucrose need to be controlled the massecuite mother liquor under vacuum condition concentration changes within the specific limits, also will reflect simultaneously auxiliary control of massecuite concentration parameter of massecuite mother liquid concentration and massecuite crystal ratio.In sugar crystal process, because in boiling pan, material viscosity is large, impurity is many, bring very big difficulty to instrument measurement, domestic substantially still resting on manually estimated by rule of thumb hand and touched to infer massecuite concentration and massecuite mother liquid concentration state.
Generally adopted the instrument such as conductivity meter and flow graph to measure conductivity and the viscosity of massecuite in the past, and then indirectly measure massecuite concentration, conductivity meter is mainly the conductivity (sucrose is non-conductive) that contains conductive materials in massecuite by measuring, the working curve reflection massecuite concentration of making in the ratio that contains conductive materials in massecuite, just there will be error to cause controlling unsuccessfully when the kind content of conductive materials in raw material; Flow graph is mainly by measuring the viscosity reflection massecuite concentration of massecuite, when material composition and massecuite crystal ratio cause viscosity to change, reflect that error also appears in the massecuite measurement of concetration, accuracy is lower, and the microwave concentration measuring method of development recent years is mainly by measuring the moisture of massecuite to the degree reflection massecuite of the decay of microwave, namely with default working curve, detect massecuite concentration, can't the needed mother liquid concentration of independent measurement crystallization of sucrose, reduced accuracy and the reliability controlled.
Laboratory, sugar refinery is detected the massecuite mother liquid concentration and at first massecuite is isolated to mother liquor at present, then measures mother liquor hammer degree with hydrometer method or refractometry.The hammer degree is a kind of expression mode of concentration, and hydrometer method is that the weight by measuring unit's volume solution is converted to the hammer degree, and accuracy is poor; Refractometry is to pass through total reflection principle, utilize the hammer degree of light at the measurement of angle massecuite mother liquor of the refractometer glass prism surface refraction contacted with the massecuite mother liquor, because the impurity existed in sucrose solution is very little on the impact of sucrose refractive power, therefore the sucrose solution refractive power hammer degree that refractometry is measured is the most accurately the most at present, it is also laboratory standard sucrose solution hammer degree determination method.
Laboratory can Measurement accuracy massecuite mother liquor refractive power hammer degree, be because laboratory adopt filter that massecuite obtains that mother liquor is measured and each the measurement after clean the refractometer prism with the assurance measurement accuracy.Yet, in boiling pan, adopt refractometer to detect online and have two problems that are difficult to solve: first refractometer is when boiling pan is used, restriction due to optical element, the sensor depth stretched in boiling pan is little, the massecuite of the thickness that boiling pan keeps to the side flows slowly, the massecuite mother liquor also is difficult to the displacement of flowing on the refractometer prism, in boiling pan, the main body massecuite often needs the long period just to flow to the refractometer place, full-bodied mother solution displacement a period of time again on measuring prism, the massecuite mother liquid concentration that refractometer is measured in real time is the mother liquid concentration before the main body massecuite long period in fact, be that the massecuite mother liquid concentration signal that refractometer is measured has hysteresis quality, the measured value that " hysteresis " of this measurement affects instrument can not reflect and control massecuite mother liquid concentration variation in boiling pan in time, its two be impurity in massecuite can be on the refractometer prism crystal in incrustation and massecuite also can be deposited on the refractometer prism and cause measuring error.These two problems can't be used in the on-line measurement of boiling pan crystallization process refractometer.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure and can promptly and accurately measure online the on-line measuring device of massecuite mother liquid concentration and massecuite concentration.
For solving the problems of the technologies described above the technical scheme adopted: concentration on-line measuring device in a kind of sugar crystal process, comprise the online refractometer of being located on the boiling pan sidewall and carry stirring apparatus, online refractometer has a prism measuring junction, the prism measuring junction passes the boiling pan sidewall and stretches in boiling pan, carry stirring apparatus to comprise the drive motor of being located on the boiling pan sidewall, the output terminal of drive motor is connected with the transmission shaft stretched in boiling pan, on transmission shaft, be provided with at least one propeller shape blade along the propeller shaft length direction, transmission shaft is near the prism measuring junction, refractometer output massecuite mother liquid concentration signal, and will carry driving motor electric current in stirring apparatus to convert the output of reflection massecuite concentration signal to by transmitter.
Be further used as the improvement of technical solutions of the utility model, along the propeller shaft length direction, be provided with a plurality of propeller shape blades on transmission shaft, the spacing distance between each propeller shape blade is less than 15 centimetres.
Be further used as the improvement of technical solutions of the utility model, the prism measuring junction and apart between the nearest propeller shape blade of prism measuring junction the distance be less than 15 centimetres.
Beneficial effect: this concentration on-line measuring device carries stirring apparatus to carry and to stir thickness massecuite in boiling pan by arranging, increase the mobility of the massecuite in boiling pan, i.e. reinforcement is equipped with the displacement of boiling pan fringe region thickness massecuite and the boiling pan body region thickness massecuite of online refractometer, simultaneously, carry the propeller shape blade rotated on stirring apparatus to produce expulsive force promotion massecuite and with certain speed, wash away the displacement of the prism measuring junction surface quickening massecuite mother liquor of online refractometer, the lip-deep massecuite mother liquid concentration of prism measuring junction and the boiling pan body region massecuite mother liquid concentration that make to be arranged on the online refractometer on the boiling pan edge keep synchronization parameter, and then make online refractometer can promptly and accurately reflect the situation of change of massecuite mother liquid concentration in boiling pan, realize the purpose that in boiling pan, the online concentration of online refractometer detects.On the other hand, can also make impurity and crystal in boiling pan be difficult to be deposited on the prism measuring junction by carrying the washing away of stirring apparatus, agitaion, further improve the precision of utilizing online refractometer to measure the massecuite mother liquid concentration.Simultaneously, using drive motor as drive source, utilize the size of the electric current of drive motor can reflect the resistance that the propeller shape blade rotary is subject to, it is propeller shape blade suffered resistance difference under different massecuite concentration, the drive current of drive motor is also different, according to this principle, the size of current of drive motor can be converted and reflects the massecuite concentration signal by conventional processing of circuit, online refractometer output massecuite mother liquid concentration signal, by transmitter, will carry drive motor current conversion in stirring apparatus to become the output of reflection massecuite concentration signal, utilize the online detection of massecuite mother liquid concentration and massecuite concentration to reach good control effect.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further;
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 carries the structural representation of stirring apparatus in the utility model embodiment.
Embodiment
See figures.1.and.2, the utility model comprises the online refractometer 10 of being located on boiling pan 30 sidewalls and carries stirring apparatus 20, online refractometer 10 has a prism measuring junction 11, prism measuring junction 11 passes boiling pan 30 sidewalls and stretches in boiling pan 30, carry stirring apparatus 20 to comprise the drive motor 21 of being located on boiling pan 30 sidewalls, the output terminal of drive motor 21 is connected with the transmission shaft 22 stretched in boiling pan 30, on transmission shaft 22, be provided with at least one propeller shape blade 23 along transmission shaft 22 length directions, the close prism measuring junction 11 of transmission shaft 22 also has angle with prism measuring junction 11.
The prism measuring junction 11 of online refractometer 10 is arranged on boiling pan 30 inwalls, optical element structure reason due to online refractometer 10, thereby limited the degree of depth that prism measuring junction 11 stretches into boiling pan 30, online refractometer 10 mainly utilizes light that automatic light source the sends concentration at the measurement of angle massecuite mother liquor of the glass prism surface refraction contacted with the massecuite mother liquor.
Owing on boiling pan 30 fringe regions, assembling the larger massecuite of viscosity, online refractometer 10 can only on-line measurement goes out the concentration of massecuite mother liquor in boiling pan 30 fringe regions, massecuite mobility extreme difference due to this zone thickness, massecuite in the boiling pan body region will could arrive the lip-deep massecuite mother liquor of prism measuring junction 11 that online refractometer 10 is slowly replaced in this zone again through the long period, by arranging, carry stirring apparatus 20, massecuite in the interior body region of boiling pan 30 is transported to near the position of online refractometer 10 and with certain speed, washes away the thick liquids of the prism measuring junction 11 upper adhesions in surface of online refractometer 10, increase the massecuite mobility of the interior body region of boiling pan 30 to boiling pan 30 fringe regions, strengthen the displacement of the prism measuring junction 11 surperficial thick liquids of online refractometer 10, make the massecuite mother liquid concentration at prism measuring junction 11 places on boiling pan 30 fringe regions keep synchronizeing with the massecuite mother liquid concentration of boiling pan 30 body region, and then make online refractometer 10 can promptly and accurately reflect the situation of change of the interior massecuite mother liquid concentration of boiling pan 30, reach the purpose that online concentration detects.On the other hand, can also make impurity and crystal in boiling pan be difficult to be deposited on the prism measuring junction by the agitaion of carrying stirring apparatus 20, further improve the precision of utilizing online refractometer to measure the massecuite mother liquid concentration.
In the present embodiment, carry stirring apparatus 20 to adopt drive motor 21 as drive source, the propeller shape blade 23 that drive motor 21 drives on transmission shaft 22 rotates to carry and stir the thickness object (massecuite) in boiling pan 30, thereby wherein in propeller shape blade 23 rotary courses, constantly the massecuite in boiling pan 30 is pushed to online refractometer 10 places and reach the purpose that the massecuite in boiling pan 30 body region is carried toward boiling pan 30 fringe regions, the rotation of propeller shape blade 23 simultaneously also to a certain degree drives the mobile displacement of massecuite in boiling pan 30, make the massecuite mother liquor in thick liquid keep good circulating property, thereby make the massecuite mother liquid concentration of body region in massecuite mother liquid concentration that prism measuring junction 11 near zones detect and boiling pan 30 substantially keep synchronizeing, make online refractometer 10 can promptly and accurately reflect the variation of massecuite mother liquid concentration.
Adopt simultaneously drive motor 21 as the drive source of carrying stirring apparatus 20, the size of the electric current of drive motor 21 can reflect the resistance that 23 rotations of propeller shape blade are subject to, propeller shape blade 23 suffered resistance difference when different massecuite mother liquid concentrations and different massecuite crystal ratio, the drive current of drive motor 21 is also different, the size of current correspondence that is drive motor 21 reflects massecuite mother liquid concentration and massecuite crystal ratio, by conventional processing of circuit, the size of current of drive motor 21 can be conversed to massecuite mother liquid concentration and massecuite crystal scaling signal, and then indirectly reflect massecuite concentration, this reflection massecuite concentration signal is that control boiling pan crystallization process is needed.
As preferred implementation of the present utility model, on transmission shaft 22, be provided with a plurality of propeller shape blades 23 along transmission shaft 22 length directions, the spacing distance between each propeller shape blade 23 is less than 15 centimetres.
As preferred implementation of the present utility model, prism measuring junction 11 and apart between the nearest propeller shape blade 23 of prism measuring junction 11 the distance be less than 15 centimetres.
When propeller shape blade 23 while being a plurality of, the distance between prism measuring junction 11 and nearest stirring vane 23 is controlled in 15 centimetres near the thick liquid displacement be conducive to prism measuring junction 11 and flows.According to practical condition, can on transmission shaft 22, increase and decrease propeller shape blade 23, spacing distance between each propeller shape blade 23 on transmission shaft 22 should keep being less than 15 centimetres, if the spacing distance between each propeller shape blade 23 is excessive, the mobility that is in the thick liquid between two propeller shape blades 23 greatly reduces the displacement that is unfavorable for thick liquid and flows.
In actual production, according to different syrup source, determine the upper and lower limit of massecuite mother liquor hammer degree, if in crystallization process, massecuite mother liquor hammer degree exceeds the upper limit, massecuite can produce new small crystals, affects the Quality and yield of product; If in crystallization process, the hammer degree of massecuite mother liquor exceeds lower limit, in massecuite, crystal is slowly grown up and is even dissolved, therefore it is important rationally controlling the change very within the specific limits of massecuite mother liquid concentration in boiling pan 30, by the utility model concentration on-line measuring device, draw in real time the massecuite mother liquid concentration of body region in boiling pan 30, control on boiling pan 30 syrup inlet valve or water intaking valve again and open or close to control massecuite mother liquor hammer degree between upper and lower limit, crystal just can comparatively fast be grown up.
Massecuite concentration is relevant with massecuite crystal ratio to the massecuite recurrent state, when mother liquid concentration is normal if massecuite concentration is too high, illustrates that the crystal ratio is too high, and recurrent state is poor, at this moment can suitably strengthen the syrup inlet amount by the syrup inlet valve; When too low the and mother liquid concentration of massecuite concentration is normal, illustrate that the crystal ratio is too low and the mother liquor amount is too much, sugar has little time crystallization, easily in fluctuation of concentration, produces new small crystals and affects production, at this moment will open water intaking valve and make massecuite concentration and mother liquor hammer degree be controlled at normal range.
The above is explained in detail embodiment of the present utility model by reference to the accompanying drawings, but the utility model is not limited to above-mentioned embodiment, in the ken that described technical field those of ordinary skill possesses, can also under the prerequisite that does not break away from the utility model aim, make various variations.
Claims (3)
1. concentration on-line measuring device in a sugar crystal process, it is characterized in that: comprise the online refractometer (10) of being located on boiling pan (30) sidewall and carry stirring apparatus (20), described online refractometer (10) has a prism measuring junction (11), described prism measuring junction (11) passes boiling pan (30) sidewall and stretches in boiling pan (30), described conveying stirring apparatus (20) comprises the drive motor (21) of being located on boiling pan (30) sidewall, the output terminal of described drive motor (21) is connected with the transmission shaft (22) stretched in boiling pan (30), at described transmission shaft (22), above along transmission shaft (22) length direction, be provided with at least one propeller shape blade (23), described transmission shaft (22) is near prism measuring junction (11).
2. concentration on-line measuring device in sugar crystal process according to claim 1, it is characterized in that: at described transmission shaft (22), above along transmission shaft (22) length direction, be provided with a plurality of propeller shape blades (23), the spacing distance between each described propeller shape blade (23) is less than 15 centimetres.
3. concentration on-line measuring device in sugar crystal process according to claim 2 is characterized in that: described prism measuring junction (11) and be less than 15 centimetres apart from the distance between the nearest propeller shape blade (23) of prism measuring junction (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320328763XU CN203310749U (en) | 2013-06-07 | 2013-06-07 | Concentration online detector for crystallization process of sucrose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320328763XU CN203310749U (en) | 2013-06-07 | 2013-06-07 | Concentration online detector for crystallization process of sucrose |
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| Publication Number | Publication Date |
|---|---|
| CN203310749U true CN203310749U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320328763XU Withdrawn - After Issue CN203310749U (en) | 2013-06-07 | 2013-06-07 | Concentration online detector for crystallization process of sucrose |
Country Status (1)
| Country | Link |
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| CN (1) | CN203310749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335981A (en) * | 2013-06-07 | 2013-10-02 | 广州甘蔗糖业研究所 | Device for on-line detection of concentration during crystallization of cane sugar |
-
2013
- 2013-06-07 CN CN201320328763XU patent/CN203310749U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335981A (en) * | 2013-06-07 | 2013-10-02 | 广州甘蔗糖业研究所 | Device for on-line detection of concentration during crystallization of cane sugar |
| CN103335981B (en) * | 2013-06-07 | 2015-07-08 | 广州甘蔗糖业研究所 | Device for on-line detection of concentration during crystallization of cane sugar |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131127 Effective date of abandoning: 20150708 |
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| RGAV | Abandon patent right to avoid regrant |